DE102017114930A1 - ejector - Google Patents

Abstract

The invention is based on an ejection device, in particular a needle-free injection device, for ejecting at least one substance (12a, 12b), in particular an active substance and / or a dye, preferably a fluid and / or a powder, advantageously for injection into tissue, in particular and / or under skin, with at least one drive unit (14a-e), which is provided for generating at least one actuating movement for at least one ejection element (16a-e).
It is proposed that the drive unit (14a-e) has at least one at least partially magnetically deformable drive element (18a-e).

Description

State of the art

The invention relates to an ejection device according to the preamble of claim 1.

Various treatment methods require an injection of active ingredients, for example, under the skin of a patient, in many cases at regular intervals such as daily. Also in other areas, such as tattoo machines, needles are also used to bring a substance to be injected under the skin. In the field of drug administration needle-free injection devices have already been proposed as an alternative to conventional syringes with needles, with which liquid active ingredients can be introduced under the skin of a patient. In addition to purely mechanical needle-free injection devices, injection devices with piezo drive or with voice coil drive are also known here.

The object of the invention is in particular to provide a generic device with improved ejection properties. The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

Advantages of the invention

The invention relates to an ejection device, in particular a needle-free injection device and / or an advantageously needle-free tattooing device, for ejecting at least one substance, in particular an active substance and / or a dye, preferably a fluid and / or a powder, advantageously for injection into Tissue, in particular in and / or under skin, with at least one drive unit which is provided for generating at least one actuating movement for at least one ejection element.

It is proposed that the drive unit has at least one at least partially magnetically deformable drive element.

The inventive design advantageous ejection properties can be achieved. Advantageously, an ejection device can be provided with controllable and / or variably adjustable ejection behavior. In particular, an ejection speed and advantageously its time course can be easily and / or reliably controlled and / or adjusted. In addition, an ejection behavior can be variably adapted to a target application. In addition, an ejection device can be provided with a drive unit which can be controlled in a simple and / or precise manner, which in particular allows an execution of different injection sequences. In addition, a high degree of compactness and / or reliability can be achieved. In addition, advantageously high ejection speeds and / or accelerations can be achieved, in particular due to a reduced number of moving components. In addition, a depth of deposition can be precisely adjusted, advantageously allowing a variable adaptation to different types of tissue, such as different skin areas or skin of different animals or the like. Furthermore, advantageously, several consecutive injections can be performed quickly and safely without a change of tips and / or needles. In addition, a uniform drug delivery can be achieved.

In this context, an "ejection device" should be understood as meaning, in particular, at least one advantageously functioning part of an ejection device such as an injection device, a tattoo machine, a needle-free drug pen such as a needle-free insulin pen or the like. In this case, both ejection devices are conceivable, which are intended for the treatment of people, in particular for self-treatment or for treatment by clinical personnel and / or a doctor, as well as ejection devices from the veterinary field. Furthermore, ejection devices are conceivable which are intended for introducing spices and / or vinegar and / or oil or the like into foods, in particular in meat. In particular, the ejection device may also comprise the entire ejection device. Advantageously, the ejection device is provided to eject a defined, in particular selectable, amount and / or a defined, in particular selectable, volume of the substance in at least one individual ejection process. Advantageously, the ejection device is provided to accelerate the substance in the ejection in at least one ejection direction, preferably in exactly one preferred direction, in particular to the tissue and advantageously perpendicular to its surface. Advantageously, the substance is introduced into the tissue in at least one ejection process, preferably at least partially under the, in particular human or animal, skin. In particular, the substance is accelerated and / or moved in the ejection process due to the actuation movement, wherein a movement and / or acceleration of the substance of the actuation movement according to and / or can be done in parallel or relative to this deflected. By "provided" is intended to be understood in particular specially programmed, designed and / or equipped. Under the fact that an object is intended for a particular function, should be understood in particular that the object this fulfills and / or executes certain function in at least one application and / or operating state.

The substance may, for example, be a medicament, a vitamin preparation, a salt preparation, a mineral preparation, generally an active ingredient, a decolorizing agent, in particular for tattoos and / or for bleaching a skin, a pigment, a dye, in particular a tattoo dye and / or a cosmetic preparation or the like, combinations thereof, and / or formed as at least one of them. In particular, the substance may comprise and / or be in the form of a fluid, in particular a liquid and / or a solution and / or an emulsion. In addition, it is conceivable that the substance comprises at least one solid, in particular a powder and / or is formed as such / such. In this case, the substance may in particular comprise a mixture, for example a suspension, a solution mixture or else a smoke, a vapor, a mist, a gas mixture and / or a mixture or be designed accordingly. It is also conceivable that the substance is a, in particular solvent-free and / or dry, powder.

Preferably, the drive unit is provided for transmitting the actuating movement to the ejection element. In particular, the drive unit is provided for acceleration and / or movement of the ejection element, in particular during the ejection process. Preferably, the actuating movement is a linear movement, particularly advantageous at least substantially parallel to the ejection direction, wherein, as mentioned, also a deflection of the substance and / or an ejection in an ejection direction, which is arranged at an angle to the direction of the actuating movement, is conceivable. Advantageously, the ejection element has at least one piston and / or at least one plunger and / or at least one slide or the like and / or is designed as such. Preferably, the ejection element is designed as a, in particular tightly guided and advantageously linear, in particular in the ejection direction, movable, piston. Preferably, the ejection element is formed differently from the drive element. However, it is also conceivable that the ejection element and the drive element are at least partially connected in one piece and / or at least partially formed in one piece and / or that in particular the drive element forms the ejection element. In particular, the ejection device has the ejection element. It is also conceivable that the ejection device and in particular the drive unit have at least one transmission element which is provided for transmitting the actuating movement to the ejection element. In particular, in this case, it is conceivable that the ejection element is different and / or removable from the ejection device and, for example, part of an interchangeable cartridge, a disposable piston, a replacement cartridge, a capsule or the like. In this case, the ejection element is preferably connectable to the transmission element and / or the ejection device by means of at least one quick connection and / or is designed to be placed on the same or the same. In particular, the ejection device may have a corresponding receiving area for an exchangeable cartridge, a capsule or the like. By the fact that a first object and a second object are "at least partially integral" with each other, should be understood in particular that at least one element and / or part of the first object is integrally connected to at least one element and / or part of the second object. By "in one piece" is meant, in particular, at least materially bonded, for example by a welding process, an adhesion process, an injection process and / or another process which appears expedient to a person skilled in the art, and / or advantageously shaped in one piece, for example by manufacture a casting and / or by a production in a one- or multi-component injection molding process and advantageously from a single blank. By the fact that a first object and a second object are "at least partially in one piece", it should be understood in particular that at least one element and / or part of the first object and at least one element and / or part of the second object are integrally formed.

Preferably, the drive element is provided to at least partially generate the actuating movement, in particular by an at least partial deformation of the drive element. It is also conceivable that the drive unit has at least one translation unit which is provided for converting a deformation movement of the drive element in the actuating movement, wherein the translation unit in particular at least one transmission element such as a gear, a friction wheel, a lever, a slide, a transmission , a cam or the like. In particular, a deformation movement generated directly by the drive element and / or the actuation movement differ from a rotational movement. Advantageously, the drive unit is free from an eccentric and / or components for converting a rotational movement into a linear movement. In particular, the deformation movement and advantageously the actuation movement is a linear movement along a longitudinal axis of the drive element. In particular, the drive element is intended to expand parallel to its longitudinal axis to produce the actuating movement or contract. Preferably, the drive element is a magnetically deformable drive element. In particular, the drive element is in one piece and / or formed as a solid body. But it is also conceivable that the drive element, in particular at least in sections, as a hollow body, for example as a hollow cylinder, and / or as a solid body with recesses and / or cavities or the like is formed.

Advantageously, the drive element is at least partially, preferably at least a large part and particularly preferably completely formed from a shape-changing material. The magnetically deformable material could for example be a magnetostrictive material. However, the magnetically deformable material is advantageously a magnetically active and / or active shape memory material, in particular a magnetic shape memory material, and particularly preferably a magnetic shape memory alloy (also known as MSM material = magnetic shape memory). In particular, the drive unit is designed as an MSM drive unit and / or as an MSM actuator. In this way, in particular a particularly simple deformation can be realized with an advantageously large moving distance. In principle, it is of course conceivable that the drive unit has a plurality of drive elements, in particular identical or differently designed drive elements. In particular, to adapt a total lift and / or a total actuating force, a plurality of drive elements can be arranged next to one another and / or behind one another and / or connected in series and / or in parallel in terms of operation. Preferably, the drive element, in particular at least in sections, elongated and / or pin-shaped and / or tappet-like and / or parallelepiped and / or cylindrical. Particularly preferably, the drive element, in particular along its longitudinal axis, an at least substantially constant cross section. Preferably, the longitudinal axis of the drive element is at least substantially parallel to a main extension direction of the drive element or at least substantially perpendicular to this arranged. Particularly preferably, the longitudinal axis of the drive element is arranged at least substantially parallel or at least substantially perpendicular to a direction of movement of the actuating movement. By "at least substantially perpendicular" is meant in particular an alignment of a direction relative to a reference direction, in particular in a reference plane, wherein the direction and the reference direction include an angle, in particular less than 8 °, preferably less than 5 ° and particularly advantageously deviates less than 2 ° from a right angle. By "at least substantially parallel" should be understood here in particular an orientation of a direction relative to a reference direction, in particular in a plane, wherein the direction relative to the reference direction a deviation in particular less than 8 °, advantageously less than 5 ° and particularly advantageously smaller than 2 °.

Preferably, the shape-changing material contains nickel, manganese and gallium. Particularly preferably, the shape-changing material is a nickel-manganese-gallium alloy. In particular, the magnetically deformable material, preferably based on a weight, contains at least 20%, advantageously at least 30%, particularly advantageously at least 40% and preferably at least 45% and / or at most 80%, advantageously at most 70%, particularly advantageously at most 60% and preferably at most 55% nickel. Furthermore, the magnetically deformable material, preferably based on a weight, in particular at least 10%, advantageously at least 15% and particularly advantageously at least 20% and / or at most 50%, advantageously at most 40%, particularly advantageously at most 35% and preferably at most 30% Manganese. In addition, the magnetically deformable material, preferably based on a weight, in particular at least 10%, advantageously at least 15% and particularly advantageously at least 20% and / or at most 50%, advantageously at most 40%, particularly advantageously at most 35% and preferably at most 30% Gallium. In this way, in particular, a particularly easily achievable deformability can be realized with an advantageously large moving distance.

Alternatively, the shape-changing material could also be an iron-palladium alloy and / or an iron-palladium-containing alloy. In addition, the shape-changing material could also be formed as a foam and / or as a composite structure and / or as granules and / or as a porous material, wherein, in particular in the case of a composite material is conceivable that nickel, manganese and / or gallium components, advantageous NiMnGa pieces and / or crystallites can be embedded in a matrix.

In a further embodiment of the invention it is proposed that the magnetically deformable material is monocrystalline. Preferably, the drive element is formed as a single crystal of the magnetically deformable material. It is also conceivable that the triggering element is composed of several, in particular of some, for example, two or three or four or five individual single crystals. As a result, in particular an advantageously large lifting effect can be achieved. However, it is also conceivable that the magnetically deformable material is polycrystalline.

High reliability and / or low cost manufacturability can be achieved, in particular, if the drive element is designed as a solid body.

Advantageously, the drive unit has at least one magnet unit which is provided for generating at least one, in particular temporally variable, shape change magnetic field for the drive element. Preferably, the magnet unit, in particular electronically, can be controlled. In particular, the magnet unit is provided to generate in dependence on at least one drive signal, in particular of a time-varying actuation current and / or of a time-varying actuation voltage, at least one, in particular corresponding, time-varying magnetic field. Advantageously, the magnet unit has at least one magnetic element, in particular an inductive magnetic element, preferably a coil. In particular, the magnet unit is provided, in at least one operating state, in particular in a pulse operating state, at least one individual, preferably rectangular and / or sawtooth and / or triangular and / or bell-shaped, magnetic field pulse, in particular also a plurality of magnetic field pulses, advantageously in selectable and / or from an operating mode dependent, in particular regular, time intervals to produce. In particular, in the case that the ejection device is a particular medical injection device, for example for active ingredients, individual pulses are advantageous, wherein a single injection process can be triggered by means of a single pulse. In particular, in the case where the ejection device is a tattoo machine device, the magnet unit is advantageously provided for operation in a repeated pulse mode, wherein advantageously a plurality of successive injection processes are generated by means of a plurality of successive magnetic field pulses. As a result, a high variability with regard to producible movements can advantageously be achieved. Furthermore, a type and / or a scope and / or a repetition rate of a movement can thereby be adapted precisely and / or reliably.

In addition, it is proposed that the magnet unit has at least one coil element which at least partially surrounds the drive element, in particular its longitudinal axis. Preferably, the coil element completely surrounds the drive element in a view along the longitudinal axis of the drive element. Particularly preferably, a coil axis of the coil element corresponds to the longitudinal axis of the drive element. In particular, the drive element is arranged within the coil element. Advantageously, the coil element, in particular along the coil axis, a length which at least 50%, advantageously at least 60%, more preferably at least 70%, preferably at least 80% and particularly preferably at least 90% of a length of the drive element, in particular along the longitudinal axis of the Drive element corresponds. In particular, in at least one operating state, in particular during actuation and / or generation of the actuating movement, the coil element generates a magnetic field whose field lines are arranged at least in sections, in particular in a region arranged within the coil element and within the drive element, which advantageously extends over at least 50%. , Particularly advantageously over at least 60% and preferably over at least 70% of the length of the coil element and / or the length of the drive element extends, extend at least substantially parallel to the longitudinal axis of the drive element. Preferably, the drive unit, in particular in this case, free of a magnetic circuit. Particularly preferably, the coil element is designed as an air coil. As a result, a high space efficiency, in particular with regard to an arrangement of a coil and a drive element, can advantageously be achieved. In addition, advantageously a short reaction time and / or a spontaneous response and in particular a high acceleration can be achieved.

Alternatively or additionally, it is conceivable that the magnet unit has at least one coil element which is arranged next to the drive element. Furthermore, it is conceivable that the magnet unit has at least one magnetic circuit which is provided for introducing the shape changing magnetic field into the drive element. In general, it is conceivable that the magnet unit is provided for generating the shape change magnetic field such that its field lines, in particular in a region of the drive element and / or within the drive element, extend at least substantially perpendicularly or alternatively at least substantially parallel to the longitudinal axis of the drive element. Preferably, this can optionally produce a contraction or expansion of the drive element.

In principle, it is also conceivable that the drive element is provided for generating the actuating movement by means of at least one local deformation. In particular, the magnet unit can be provided for generating a locally and temporally variable magnetic field, which causes a temporally variable local deformation of the drive element. For example, the drive unit can operate in the manner of an MSM pump, wherein the material is advantageously pumped along the drive element due to its local deformation. It is conceivable that the substance is ejected directly due to such pumping. It is also conceivable that by means of Drive element pumped at least one fluid in this manner and a generated movement is in particular hydraulically amplified, for example, to move a piston-like ejection element.

In an advantageous embodiment of the invention, it is proposed that the ejection device has an adjusting unit which is provided for setting at least one functional parameter, in particular the drive unit. In particular, the functional parameter defines at least one mode of operation of the ejection device and preferably of the drive unit. The functional parameter may include a type and / or a scope and / or a discharge volume and / or the ejection direction of the ejection. Advantageously, the function parameter comprises at least one ejection speed and, particularly advantageously, a temporal progression of the ejection speed. Likewise, the functional parameter can include an ejection force and / or an ejection flow, in particular a volumetric flow and / or a mass flow of the ejection. In principle, it is conceivable that the setting unit is provided for setting different function parameters and / or that the function parameter comprises a plurality of different individual parameters and, for example, is a parameter set. It is conceivable that the setting unit is provided for input of the function parameter by a user. Alternatively or additionally, the setting unit can be provided for an at least partially automated setting of the functional parameter. This advantageously makes it possible to provide an ejection device which can be individually set and / or adapted for different applications and / or patients and / or users.

In a particularly advantageous embodiment of the invention it is proposed that the setting unit comprises a control and / or regulating unit, which is provided for controlling the drive unit. In particular, the control and / or regulating unit is provided to control the discharge speed and / or the discharge flow and to regulate advantageous. Preferably, the control and / or regulating unit is connected to the magnet unit and / or provided for its control. It is conceivable that at least one operating parameter of the control and / or regulating unit can be predetermined by the user. In particular, the setting unit for this purpose can have at least one input unit and / or one input and output unit such as a rotary knob, a push button, a slider, a dial key, a touch display, a digital display or the like. Preferably, the setting unit and in particular the control and / or regulating unit has at least one internal memory in which at least one operating state-dependent control and / or regulating parameter is stored, which the control and / or regulating unit in particular as a function of the predetermined by the user Operating parameters at least partially selected automatically and / or retrieves. As a result, advantageously an ejection behavior can be precisely controlled.

It is further proposed that the control and / or regulating unit is provided to at least partially automatically adjust at least one drive parameter for the drive unit as a function of at least one ejection parameter and / or as a function of at least one substance parameter. In particular, the ejection parameter can be dependent on the operating parameter presettable by the user and / or on this. For example, the ejection parameter may be a target depth of an injection in and / or under skin, an ejection amount, an ejection velocity, a repetition rate for ejection events, for example, in the case of tattooing, and / or a timing of the ejection velocity and / or the ejection current. In particular, the substance parameter may comprise at least information about the substance and / or its nature. For example, the substance parameter may contain at least information relating to a density, a volume, a viscosity, an aggregate state, a concentration, a mixing ratio, a color and / or the like. In particular, the ejection parameter and / or the substance parameter may comprise a plurality of individual parameters and / or be a parameter set. The ejection parameter and / or the substance parameter may in particular be stored in the internal memory of the control and / or regulating unit and / or in an external database in such a way that the control and / or regulating unit polls it as a function of the operating parameter specified by the user and / or retrieves. For example, a user selects a specific substance and a specific operating mode, whereupon the control and / or regulating unit, preferably at least partially automated, retrieves a corresponding ejection parameter and a corresponding substance parameter. As a result, the drive unit can advantageously be used to generate specifically adaptable movements.

Alternatively or additionally, it is proposed that the adjustment unit has at least one at least partially, preferably completely, mechanical adjustment element. The adjusting element can be designed, for example, as a rotary wheel, a mechanical slide, a lever or the like. Preferably, the adjusting element is provided to adjust at least one mechanical functional parameter of the drive unit, such as a bias of the drive element and / or the ejection element, a stroke of the ejection element, a trajectory of the Ejection element, an ejection volume, an opening area of an ejection opening, or the like. It is conceivable that the setting unit is completely mechanically formed and in this case, in particular, has no control and / or regulating unit. However, it is also conceivable that the setting unit is provided for a partially automated and / or electronic setting as well as for a partially mechanical setting of, in particular different, functional parameters of the drive unit. As a result, a high degree of reliability and / or cost-efficient manufacturability can be achieved.

In an advantageous embodiment of the invention, it is proposed that the ejection device, in particular the adjustment unit and advantageously the control and / or regulating unit, has at least one sensor interface which is provided for connection to at least one sensor. As a result, advantageously and cost-effectively and / or despite a compact design, an extended and in particular extensive range of functions can be achieved. The sensor interface may be a permanent connection to a sensor unit. The sensor interface is advantageously provided for connection to at least one external sensor and / or with at least one removable sensor. In particular, the sensor interface speed can be a mechanical and / or electronic quick connection. The sensor interface is preferably designed to be wireless, in particular as a radio interface. The sensor interface may advantageously be connected to a mobile device, for example a smartphone, a tablet PC, a smartband, generally a wearable, data glasses or the like, and in particular to at least one sensor of this mobile device such as a camera, an iris scanner , an environment parameter sensor or the like, for example by means of at least one wireless data transmission method, such as by means of a connection via Bluetooth, WLAN, ZigBee, NFC, BLE, WiMAX or the like. For example, it is conceivable that the user with his mobile device receives at least one image of a tissue to be treated and this image is transmitted to the control and / or regulating unit by means of the sensor interface in order, for example by means of at least one image analysis, at least one tissue parameter, in particular one Skin parameters such as a skin color, a hair growth, a skin thickness, a pore size, a body temperature, a skin temperature, a pH, a degree of wetting with liquid such as sweat or the like to determine.

In a particularly advantageous embodiment of the invention, it is proposed that the ejection device has at least one sensor unit which is provided for detecting at least one parameter, in particular an ejection target parameter and / or a substance parameter. As a result, a high degree of ease of use can be achieved. Furthermore, incorrect operation can be avoided. In addition, a precise adaptation of an injection behavior to a used substance and / or to a target tissue can be achieved. It is conceivable that the sensor unit can be connected and / or connected to the sensor interface. Advantageously, the ejection device, the sensor unit alternatively and particularly advantageous in addition to the sensor interface. Preferably, the sensor unit is provided for detecting a different parameter than a sensor connectable to the sensor interface. The sensor unit advantageously has at least one sensor for detecting the parameter. Preferably, the sensor unit is connected to the control and / or regulating unit. Particularly preferably, the sensor unit has at least one arithmetic unit, which is provided for determining the parameter on the basis of at least one sensor signal of the sensor of the sensor unit. Advantageously, the ejection target parameter is a desired value for at least one ejection parameter, in particular for an ejection speed and / or its time profile and / or for an ejection stream and / or its time profile. Advantageously, the sensor unit is provided to determine the ejection target parameter based on at least one tissue parameter. The sensor unit preferably has at least two different sensors for determining the ejection target parameter, in particular based on the tissue parameter, and for determining the substance parameter. Advantageously, the sensor unit is provided for detecting the substance parameter on the basis of at least one measurement on the substance. In particular, the sensor unit may be provided for detecting a plurality of different individual parameters of the substance, for example its temperature, its viscosity and / or its concentration. It is also conceivable that the sensor unit at least one specification of the substance, which is deposited for example as information on an exchange cartridge or the like, such as in the form of a QR code, RFID information, magnetic information, optical information or the like. In addition, it is conceivable that the control and / or regulating unit is intended to identify the substance at least on the basis of the substance parameter and in particular to query additional substance parameters from a database and / or from its internal memory. For example, in the case of a tattoo machine, the substance could be identified by its color and its stored physical parameters retrieved to adjust the drive unit.

In addition, it is conceivable that the sensor unit at least for detecting at least one actual value an ejection parameter is provided. In particular, the sensor unit may be provided for detecting an actual value of the first and / or the second speed and / or a position of the ejection element, in particular relative to the ejection chamber and / or relative to the ejection opening. In addition, it is conceivable that the sensor unit is provided for detecting an actual value of a pressure of the substance, in particular in the ejection chamber. Preferably, the sensor unit is provided for determining the ejection parameter in real time, so that, in particular, an actual value of the ejection parameter determined in real time can be used to control to a corresponding desired value. Advantageously, the control and / or regulating unit is provided to control the drive parameter in dependence on the actual value of the ejection parameter and in particular to regulate it. Preferably, the control and / or regulating unit is provided to compensate at least partially for a hysteretic response of the magnet unit and / or the drive element by means of a control.

It is further proposed that the ejection device, in particular the setting unit and preferably the control and / or regulating unit, has at least one data interface which is provided for connection to at least one, advantageously external, database. The database can in particular be formed on a dedicated server but also in a cloud. The data interface is preferably a wireless data interface and is advantageously provided for wireless data transmission, in particular for wireless transmission and reception of data. Advantageously, the control and / or regulating unit is provided to obtain at least one operating mode-dependent and / or operating-mode-defining parameter from the database. For example, application specific drive parameters, such as a nature of magnetization pulses, actuation force, actuation movement, PID values for controlling magnetization and / or movement of the drive member, may be retrievable from the database and / or define operating conditions, for example for treating skin areas of different nature, of users and / or, in particular human or animal, patients of different sex, different skin color, different ages and the like, or any other operating conditions. For example, in the case that the ejection device is designed as an injection device for animals, corresponding parameters for different animal species can be stored in the database. In this case, it is also conceivable that the setting unit automatically recognizes an animal species during a treatment, for example based on at least one image acquisition and / or subsequent image analysis, and advantageously obtains corresponding parameters from the database in order to automatically select an operating state adapted to the animal species. Analogously, in the case of a tattoo machine, it is conceivable that the setting unit automatically selects a corresponding operating state on the basis of at least one recognized skin parameter and / or at least one parameter of an already existing tattoo, such as a color, an edge definition, a surface or the like. Alternatively or additionally, it is conceivable that raw data, sensor data, measured parameters or the like for an analysis to an external computing unit, which may also be formed in a cloud, are transferred by means of the data interface, for example for determining the ejection target parameter, the substance parameter, the tissue parameter or similar. Accordingly, the invention further comprises a system with at least one, in particular external, database and with at least one ejection device that can be connected to the database according to the invention. As a result, a variable and / or usable for different applications ejector can be advantageously provided. In addition, a learning and / or updatable system can be provided.

wobei ρ eine Dichte des Stoffs ist.In a further embodiment of the invention it is proposed that the ejection device has at least one ejection chamber, in which the ejection element is at least partially arranged in at least one operating state. An ejection behavior can advantageously be adjusted variably via a suitable choice of a geometry of the ejection chamber. Preferably, an inner cross-section of the ejection chamber at least partially corresponds to an outer cross-section of the ejection element. Particularly preferably, the ejection element is designed as a piston guided in the ejection chamber. The ejection chamber preferably has at least one, in particular exactly one, ejection opening. Advantageously, the ejection chamber has at least one main chamber, in particular with a constant cross section, and particularly advantageously at least one ejection channel which connects the ejection opening to the main chamber. But it is also conceivable that the discharge opening opens directly into the main chamber. Preferably, the ejection element is movably mounted in the ejection chamber, in particular in the ejection direction and / or on the ejection opening and / or the ejection channel. Advantageously, the ejection chamber is cylindrical, in particular circular cylindrical, with any other geometries being conceivable. Advantageously, the ejection opening has a smaller cross section than the main chamber, in particular in a direction perpendicular to the ejection direction. In particular, a cross-sectional area A _{0 of} the ejection opening is at least 10 times, advantageously at least 20 times, particularly advantageously at least 50 times, preferably at least 100 times or even 200 times or 300 times smaller than a cross-sectional area A _{1 of} the ejection chamber. In particular, a force F necessary for an acceleration of the ejection element is given in the case of a velocity v to be achieved by substance expelled through the ejection opening $$\text{F}>\mathrm{\rho }/2\times {\text{A}}_1{}^3/{\text{A}}_0{}^2\times {\text{V}}^2$$

where ρ is a density of the substance.

It is also proposed that at least the ejection chamber and in particular the ejection chamber is designed to be interchangeable with the ejection element. Advantageously, the ejection chamber and / or the ejection element is at least part of an interchangeable cartridge or the like, wherein preferably the ejection chamber is already filled with the substance. In particular, it is conceivable that the ejection chamber and / or the ejection element can be coupled and / or connected to the transmission element of the drive unit. In this way, a high level of comfort and / or ease of handling can be achieved when changing a substance to be injected, such as, for example, an active substance or a tattooing ink.

However, it is also conceivable that the ejection device has a permanent and / or non-exchangeable ejection chamber, which in particular can be filled with the substance.

In an advantageous embodiment of the invention it is proposed that the drive unit is provided, in particular in at least one Eindringbetriebszustand, at least one ejection of the substance with at least a first speed and, in particular in at least one Zuführbetriebszustand, with at least one of the first speed different second speed to effect. In this way, advantageously, an injection process can be precisely adapted to a target tissue. In addition, a reliable and / or painless penetration of the substance into the tissue can be achieved. Preferably, in one application, the fabric penetrates into the skin for the first time in the penetration mode, and is more preferably delivered to the skin and / or underlying tissue in the delivery mode, particularly by channels formed in the penetration mode and / or temporary microscopic openings of the skin. Preferably, an amount of injected material is adjustable over a duration of the delivery mode. It is conceivable for the setting unit to set a duration of the penetration operating state and / or the feed operating state as a function of the operating parameter specified by the user, of the substance parameter, of the tissue parameter or the like, at least partially automatically and preferably to actuate the magnet unit accordingly. In particular, in the case of a medical injection, the duration of the Eindringbetriebszustands for example at least 1 microseconds, preferably at least 5 microseconds and more preferably at least 10 microseconds and / or at most 500 microseconds, advantageously at most 100 microseconds and more preferably at most 50 microseconds. In particular, in the case of a medical injection also the duration of Zuführbetriebszustands at least 10 microseconds, advantageously at least 50 microseconds and more preferably at least 100 microseconds and / or at most 1000 microseconds, advantageously at most 500 microseconds and more preferably at most 200 microseconds, with a maximum duration of Zuführbetriebszustands can also be chosen larger, if larger amounts of the substance to be injected. Advantageously, the drive unit moves the ejection element in the penetration operating state and in the feed operating state at speeds which are in a relationship corresponding to a ratio of the first speed to the second speed and which in particular are smaller, advantageously significantly smaller than, preferably according to one Ratio of the cross-sectional areas A ₀ and A ₁ . Advantageously, the control and / or regulating unit is provided to set the first speed and / or the second speed, preferably the first and the second speed, to a respective desired value and, in particular, adjust it. Advantageously, the sensor unit is for detecting the first speed and / or the second speed, for example by means of a measurement at the ejection opening and / or by means of a speed measurement on the ejection element and / or on the transmission element and / or indirectly by means of an energy intake and / or a Power of the magnet unit provided.

In a particularly advantageous embodiment of the invention, it is proposed that the first speed is greater than 20 m / s, advantageously greater than 50 m / s, particularly advantageously greater than 100 m / s and preferably greater than 150 m / s, in particular in the case a medical injection, wherein in particular in the case of a tattoo smaller speeds can be advantageous. In particular, a depth of penetration of the substance is possible via a suitable choice of the first and / or the second speed, whereby a large first speed usually allows a deep penetration and a less large first speed a less deep penetration. In particular, in the case that the substance is to be injected into the skin and in particular not below, such as in a tattoo, lower first speeds are to be selected. Advantageously, the setting unit is provided for the first speed and / or the second speed as a function of one, in particular of a user predetermined, target penetration, which can be advantageously determined automatically based on the user specified by the operating parameter and / or the tissue parameter of the control and / or regulating unit, at least partially set automatically. In this way, a reliable penetration into tissue can advantageously be achieved and / or a spraying back of the substance in an injection process, in particular due to a too slow speed of the substance in the event of an impact on the skin, can be avoided.

A reliable injection, in particular without spraying the substance from a skin, can be achieved in particular if the second speed is less than the first speed. For example, the second speed may be smaller than the first speed by a factor of 1.5, a factor of 2, a factor of 5, a factor of 10, a factor of 20, or any other factor, in particular larger or smaller.

It is further proposed that the ejection device has at least one fabric reservoir, in particular different from the ejection chamber, which is provided for receiving the substance to be expelled to an extent which is sufficient for more than one ejection operation. In particular, the fabric reservoir holds an amount of fabric that is at least five, preferably at least ten, more preferably at least 20 and preferably for at least 50 Ejecting operations is sufficient. In particular, in the case of a tattoo machine device, a significantly larger fabric reservoir is also conceivable that can hold substance for several hundred, several thousand or several ten thousand ejections. Preferably, the fabric reservoir is connectable to the ejection chamber and / or connected, in particular to a filling of the ejection chamber with substance from the fabric reservoir. It is conceivable that the fabric reservoir is formed replaceable, for example in the manner of a storage cartridge, a cartridge or the like. As a result, a repeated injection can advantageously be made possible, for example for the regular supply of an active substance or, in particular, in the case of a tattoo.

It is also proposed that the ejection device has at least one restoring unit with at least one restoring element, which is provided in at least one restoring operating state for generating a restoring force for the drive element. This allows a reliable operation and / or a simple construction can be achieved. In particular, the recovery force of the actuating movement is opposite. Advantageously, the restoring force acts in the Rückverformungsbetriebszustand at least substantially parallel to the longitudinal axis of the drive element and preferably on the end face. Advantageously, the restoring element acts on the drive element with the recovery force. For example, the restoring element can be designed as a, in particular mechanical, spring. Likewise, magnetic springs, gas springs or hydraulic springs come into consideration. In addition, it is conceivable that the restoring element is designed as an active restoring element, which in particular generates the restoring force as needed and advantageously as a function of at least one, in particular electronic, request signal.

In a further embodiment of the invention it is proposed that the restoring element is at least partially formed from a magnetically deformable material and preferably from a magnetic shape memory alloy. In particular, it is conceivable that the restoring element is a drive element of a further drive unit, which is arranged antagonistically in particular to the drive unit. Preferably, the return element is formed identically to the drive element. Preferably, the drive unit and the further drive unit are arranged such that an expansion of the drive element causes a compression of the drive element of the further drive unit and preferably reverses. The drive units can be connected via at least one force transducer. In particular, it is conceivable that the drive element and the drive element of the further drive unit act on opposite sides of a rocker arm. Advantageously, the drive unit and the further drive unit are arranged opposite one another and / or coaxially. In particular, a longitudinal axis of the drive element of the further drive unit corresponds to the longitudinal axis of the first drive element. In particular, the drive unit and the further drive unit together form a bistable actuator, for example a push-push actuator or a pull-pull actuator. This can advantageously be provided a precisely controllable actuator. In addition, end positions can be approached quickly and / or reliably.

It is also proposed that the reset unit is provided for at least partially generating the recovery force from a compressive force of the fabric. As a result, a high efficiency can be achieved. In addition, a cost-effective design can be achieved. The compressive force of the substance, in particular via the ejection element and / or the transmission element, preferably acts on the drive element in the restoring operating state. For example, in particular in this case, the substance may comprise a pressurized fluid which is in the Rebuild operation state at least partially generates the recovery force. In particular, it is conceivable that in the Rückverformungsbetriebszustand, in particular after a successful ejection, substance flows from the fabric reservoir into the discharge chamber and thereby, in particular due to a pressure force acting on the ejection element, the drive element deformed back.

Alternatively or additionally, it is proposed that the reset unit is provided to generate at least one filling movement for at least one filling, in particular the ejection chamber and / or the fabric reservoir, with the substance. In particular, the return unit is provided in the Rückverformungsbetriebszustand to produce as a filling movement of the, in particular coupled to the drive element, ejection element such that material, for example, from the fabric reservoir, promoted in the discharge chamber, in particular sucked, is. It is also conceivable that the filling movement is additionally supported by the pressure force of the fluid. Preferably, the return element is provided to generate the filling movement at least partially. Here, a generation of the filling movement is conceivable by a spring element formed as a return element. In particular, in the case of an antagonistic to the drive unit arranged further drive unit is also conceivable that the drive element of the further drive unit is provided for generating the Befüllbewegung. A deformation of the drive element of the further drive unit can be provided in this case to a common and / or simultaneous generation of the filling movement and the recovery force. In this way, for example in the case of a tattoo machine device, a reliable supply of substance to be injected can be ensured.

Advantageous properties with regard to a controllable injection and / or an adjustable injection behavior can be achieved in particular with an ejection device having at least one ejection device according to the invention. The ejection device can be configured, for example, as a needle-free injection device, in particular as a substance application device and / or as a tattoo machine and / or as a body painting device or the like. Preferably, the ejection device is a small appliance, in particular a small electrical appliance, and preferably intended to be held and / or operated by one hand during its use. Advantageously, the ejection device has a weight of at most 2 kg, more preferably of at most 1 kg, preferably of at most 0.5 kg and particularly preferably of at most 0.3 kg.

The invention also includes a method with and / or for the production and / or operation of an ejection device according to the invention.

Advantageous properties with regard to a precise injection can be achieved, in particular, if the ejection device according to the invention is used for injecting at least one substance into tissue, in particular into skin, for example of a user and / or a patient.

The ejection device according to the invention should not be limited to the application and embodiment described above. In particular, in order to fulfill a mode of operation described herein, the ejection device according to the invention may have a number deviating from a number of individual elements, components and units specified herein and / or any suitable combination thereof. In addition, in the value ranges indicated in this disclosure, values lying within the stated limits are also to be disclosed as disclosed and used as desired.

list of figures

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

• 1 ein Ausstoßgerät mit einer Ausstoßvorrichtung in einer schematischen perspektivischen Darstellung,
• 2 die Ausstoßvorrichtung in einer schematischen Teilschnittdarstellung,
• 3 ein erstes alternatives Ausstoßgerät mit einer ersten alternativen Ausstoßvorrichtung in einer schematischen perspektivischen Darstellung,
• 4 die erste alternative Ausstoßvorrichtung in einer schematischen Teilschnittdarstellung,
• 5 eine zweite alternative Ausstoßvorrichtung in einer schematischen Teilschnittdarstellung,
• 6 eine dritte alternative Ausstoßvorrichtung in einer schematischen Teilschnittdarstellung und
• 7 eine vierte alternative Ausstoßvorrichtung in einer schematischen Schnittdarstellung.

Show it:

• 1 an ejector with an ejector in a schematic perspective view,
• 2 the ejection device in a schematic partial sectional view,
• 3 a first alternative ejection device with a first alternative ejection device in a schematic perspective view,
• 4 the first alternative ejection device in a schematic partial sectional view,
• 5 a second alternative ejection device in a schematic partial sectional view,
• 6 a third alternative ejection device in a schematic partial sectional view and
• 7 a fourth alternative ejection device in a schematic sectional view.

Description of the embodiments

The 1 shows an ejector 42a with an ejector 10a in a schematic perspective view. The ejection device 42a is designed in the present case as a needle-free injection device. The ejection device 42a For example, it can be used to inject an active ingredient and / or a drug and / or a vitamin preparation or the like into and / or under the skin of a patient. In addition, in the present case, the ejector 10a designed as an injection device. In particular, the ejection device 10a formed as an injection device for injection under a skin of a patient, in the present case of a human patient, in principle, an analog ejection device in the veterinary field is conceivable. The ejection device 10a is for injecting a substance ( 12a) in tissue, in particular in and / or under skin, in particular of a human, provided (see also 2 ).

The 2 shows the ejector 10a in a schematic partial sectional view. The ejection device 10a is to expel at least one substance 12a intended. In the present case, the ejector is 10a provided the substance 12a into and / or under a skin, especially without the use of a needle. The ejection device 10a has at least one drive unit 14a which leads to a generation of at least one actuating movement for at least one ejection element 16a is provided. In the present case, the ejection device 10a the ejection element 16a on. But it is also conceivable that an ejector 10a is provided for connection to a separate ejection element, which is part of an interchangeable cartridge or the like, for example. Furthermore, the ejection element 16a formed in the present case as a piston and in particular has a round and advantageously a circular cross section, in particular perpendicular to the longitudinal axis 44a of the drive element 18a , on.

The fabric 12a is an active substance in the present case. In addition, the substance 12a in the present case a fluid, in particular a liquid, for example a solution containing a medicament. The fabric 12a but may also comprise a mixture, an emulsion, an aerosol, a suspension, a gas mixture and in principle any mixture. It is also conceivable that the substance 12a is a pure substance. In addition, the substance can 12a a, in particular dry, powder. For example, as a substance 12a a powdered and in particular undiluted active ingredient and / or any powdered preparation can be used.

The drive unit 14a has at least one at least partially magnetically deformable drive element 18a on. The drive element 18a is intended to generate the actuating movement by means of a, in particular magnetically induced, deformation. In the present case, the drive unit 14a such that the drive element 18a for generating the actuating movement parallel to its longitudinal axis 44a expands.

The drive element 18a is at least partially, in the present case at least a large part and in particular completely, formed from a magnetic shape memory alloy. As mentioned above, however, for example, magnetostrictive materials are also conceivable. The drive element 18a is in the present case a magnetic shape memory element.

The magnetic shape memory alloy contains nickel, manganese and gallium, but other suitable materials are also conceivable. In the present case, the shape memory alloy is also monocrystalline. In particular, the drive element 18a a single crystal or at least composed of only a few single crystals. For cost reasons and / or if a small stroke is sufficient for a particular application, however, polycrystalline materials are also conceivable.

The drive element 18a is cuboid in the present case. In addition, the drive element 18a a solid body. A length of the drive element 18a is application-specific selectable and in particular dependent on a stroke of the ejection element to be achieved 16a , In the present case, the drive element 18a provided to a change in length of about 4%, with smaller or larger length changes are conceivable.

The drive unit 14a has at least one controllable magnet unit 32a resulting in generation of at least one shape change magnetic field for the drive element 18a is provided. The magnet unit 32a is intended to generate the shape change magnetic field such that its field lines in a region of the drive element 18a and / or within the drive element 18a at least substantially perpendicular to its longitudinal axis 44a run. The drive element 18a is formed such that, in particular, starting from an unstretched state, in the presence of the shape changing magnetic field along its longitudinal axis 44a expands, whereby advantageously the actuating movement is generated.

The ejection device 10a has at least one trigger 62a on which is provided for an input of at least one triggering parameter by a user. In the present case, the trigger 62a designed as a push button. The ejection device 10a also has at least one power supply 64a that includes, for example, at least one battery. Upon input of the tripping parameter, the magnet unit becomes 32a supplied with electrical energy and the ejection of the substance 12a initiated.

In the present case, the magnet unit comprises 32a at least a first coil 46a and at least a second coil 48a , Furthermore, the magnet unit comprises 32a at least one magnetic guide element 50a , The magnetic guide element 50a is at least partially formed of a ferromagnetic material. In the present case, the magnetic guide element 50a an iron core.

The ejection device 10a has at least one ejection chamber 34a on, in which the ejection element 16a is arranged at least partially in at least one operating state. Before ejecting the substance 12a this is in the ejection chamber 34a arranged. The ejection element 16a is in the ejection chamber 34a guided and / or movable. The ejection element 16a is parallel to the longitudinal axis 44a of the drive element 18a in the ejection chamber 34a movable.

The ejection chamber 34a has at least one discharge opening 52a on. When ejecting the substance 12a this is from the ejection element 16a on the ejection opening 52a moved and ejected through it. The ejection chamber 34a can be in the direction of the ejection opening 52a and / or in the direction of one to the ejection opening 52a leading output channel 54a funnel-shaped and / or be tapered. The in the 2 shown geometry is to be understood as a purely schematic representation.

The ejection opening 52a has a cross-sectional area, in particular a cross-section perpendicular to the longitudinal axis 44a of the drive element 18a , which is smaller, preferably many times smaller, than a sectional area of the ejection chamber 34a , in particular a cross section perpendicular to the longitudinal axis 44a of the drive element 18a , For example, the cross-sectional area of the ejection opening 52a by a factor 50 , a factor 100 , a factor 200 , a factor 500 or be smaller by any other factor.

The drive unit 14a is intended, in a Eindringbetriebszustand at least one ejection of the substance 12a to effect at least a first speed. In particular, in the penetration mode, the fabric becomes 12a with the first speed out of the discharge port 52a ejected to the skin so that it can be penetrated. Advantageously, small openings and / or passages in the skin arise, preferably without injury to tissue. In addition, the drive unit 14a intended to eject the substance in a feed mode 12a to effect at a second speed different from the first speed. In the feed operating state, the substance becomes advantageous 12a injected into and / or under the skin created in the penetration mode in the skin. A lot of injected substance 12a is here in particular adjustable over a duration of Zuführbetriebszustands. However, this amount may, of course, in addition to a texture of the substance 12a , from the cross-sectional area of the ejection opening 52a , depend more on the first and / or on the second speed and the like.

The first speed is greater than 20 m / s. In the present case, the first speed is greater than 100 m / s. Advantageously, the first speed is between 100 m / s and 200 m / s. A penetration depth of the substance 12a in and / or under the skin can be adjusted in particular on the first speed, with increasing first depth increasing penetration depths can be realized.

The second speed is less than the first speed. In the present case, for example, the second speed is smaller than the first speed by a factor 2 or a factor 3 or a factor 5. If the second speed, in particular clearly, chosen smaller than the first speed, can be a back-spraying of the substance 12a be avoided by the skin.

The ejection device 10a has at least one fabric reservoir 36a on, which is a recording of the ejected substance 12a is provided to an extent that is sufficient for more than one ejection operation. The fabric reservoir 36a is designed in the present case as a replaceable cartridge. For example, the fabric reservoir 36a be a drug cartridge, the drug for ten or 20 or any other number of injections. Such a configuration is particularly advantageous for a self-treatment of a patient who requires injections, for example with insulin, at regular intervals. The ejection device 10a also has a connection 56a for the fabric reservoir 36a on. The connection 56a For example, to a pressure-tight quick connection with the fabric reservoir 36a be provided.

Before ejecting the substance 12a from the ejection chamber 34a this will be part of the substance 12a from the fabric reservoir 36a filled. Preferably, the fabric reservoir contains 36a the substance 12a with an overpressure, advantageously from several bars, at least before a first removal of the substance 12a from the fabric reservoir 36a ,

The ejection device 10a has a reset unit 38a with at least one return element 40a in at least one Rückverformungsbetriebszustand, in particular in a reverse deformation of the drive element 18a , for generating a recovery force for the drive element 18a is provided. The recovery force acts in this case parallel to the longitudinal axis 44a of the drive element 18a and in particular on its front side 58a , The reset unit 38a is to a compression of the drive element 18a after its expansion, for example in the generation of the actuating movement, provided.

In the present case, the reset element 40a as a mechanical spring, in particular as a coil spring, formed, but also any other springs such as magnetic springs, gas springs, hydraulic springs or the like come into question.

The reset unit 38a is intended to at least one filling movement for at least one filling of the ejection chamber 34a with the substance 12a to create. In the present case, the reset unit moves 38a the ejection element 16a in the recovery mode parallel to the longitudinal axis 44a of the drive element 18a and / or from the ejection opening 52a path. A corresponding movement of the ejection element 16a serves as Befüllbewegung, the particular substance 12a from the fabric reservoir 36a into the ejection chamber 34a sucks.

In the present case, the reset unit 38a also intended to at least partially restore the recovery force by means of a compressive force of the fabric 12a to create. The pressurized fabric 12a of the fabric reservoir 36a Presses against the ejection element in the recovery mode 16a and this in turn, in particular indirectly via at least one rod-shaped transmission element 60a , against the front 58a of the drive element 18a , In particular, takes place in the present case in the recovery of the drive element 18a a filling of the ejection chamber 34a with fabric 12a from the fabric reservoir 36a instead of.

In principle, however, it is also conceivable that the fabric reservoir 36a the substance 12a contains no pressure and this only due to the Befüllbewegung, especially the ejection element 16a , in the ejection chamber 34a arrives.

In the following, some additional or alternative to 2 again on the 1 Referenced. The ejection device 10a has an adjustment unit 20a which is provided for setting at least one function parameter. In the present case, the adjustment unit 20a for setting the first speed and / or the second speed or for setting corresponding desired values.

The adjustment unit 20a has at least one input unit 66a on, for example, an input element 67a may include with switches, buttons or the like, and advantageously at least one display 69a , The input unit 66a is intended to input at least one operating parameter by the user. For example, this can be done by means of the input unit 66a select an operating mode, set an amount of substance to be injected, enter a setpoint for an injection depth, or the like.

The adjustment unit 20a has a control and / or regulating unit 22a on, which leads to a control of the drive unit 18a is provided. In the present case, the control and / or regulating unit 22a a control unit. The control and / or regulating unit 22a is to a control of the magnet unit 32a intended. In addition, the control and / or regulating unit 22a intended for processing the triggering parameter.

The control and / or regulating unit 22a is intended to at least one drive parameter for the drive unit 14 as a function of at least one ejection parameter and / or as a function of at least one substance parameter, at least partially automated. In the present case, the control and / or regulating unit 22a intended to set the first speed and the second speed to a respective setpoint and in particular to regulate. In addition, the control and / or regulating unit 22a intended to determine corresponding desired values at least on the basis of the operating parameter entered by the user. In particular, the control and / or regulating unit controls 22a an energization of the magnet unit 32a such that a time course of a speed of the ejection element 16a is regulated. For example, the control and / or regulating unit 22a in the ejection of the substance 12a the first speed over a period of 50 μs to 100 μs and / or the second speed over a period of 100 μs to 200 μs to one regulate the corresponding setpoint and in particular the magnet unit 32a energize accordingly.

The ejection device 10a has a sensor unit 28a on, which is intended to detect at least one parameter. The sensor unit 28a is advantageous for transmitting the parameter to the control and / or regulating unit 22a intended. Furthermore, the control and / or regulating unit 22a advantageous for a processing of the parameter and in particular for a determination of at least one control parameter, for example of PID values and / or desired values, provided on the basis of the parameter.

In the present case, the sensor unit 28a provided for a detection of at least one substance parameter. The sensor unit 28a includes, for example, at least a first sensor 68a , which is the substance parameter of the substance 12a in the ejection chamber 34a detected. For example, the material parameter may be a temperature, an absorption, a viscosity or the like.

Furthermore, in the present case, the sensor unit 28a provided for detecting at least one ejection parameter. The sensor unit 28a For example, it includes at least a second sensor 70a , which determines the ejection parameter in a region of the ejection opening 52a or alternatively in the ejection chamber 34a detected. For example, the ejection parameter may be an actual value of a velocity of the substance 12a and / or the ejection element 16a in the ejection of the substance 12 be. Alternatively or additionally, the sensor unit 28a for detecting a deformation and / or a deformation speed of the drive element 18a be provided.

In addition, in the present case, the sensor unit 28a for detecting at least one ejection target parameter. The sensor unit 28a For example, it includes at least a third sensor 72a for detecting at least one tissue parameter, on the basis of which the ejection target parameter can be determined. In particular, the control and / or regulating unit 22a intended to determine the ejection target parameter based on the tissue parameter. For example, the tissue parameter may include information regarding correct placement of the ejection device 10a on the skin. The ejection target parameter in this case could include a release that only occurs if it is correctly set up. In case of incorrect placement, the control unit may 22a For example, be provided to the ejection of the substance 12a even after entering the tripping parameter. Alternatively or additionally, it is conceivable that the tissue parameter is, for example, a skin temperature, a skin color, a skin thickness, a conductivity or the like. The third sensor 72a For example, it can be designed as a camera and provided for capturing at least one image of the skin. Of course, however, other suitable sensors are conceivable. The control and / or regulating unit 22a In particular, in this case, it may be provided to determine target values for the first speed and / or for the second speed on the basis of the tissue parameter as ejection target parameters. For example, a high setpoint for the first speed may be determined if the tissue parameter indicates the presence of a thick and / or thick skin.

Basically, the sensor unit 28a any combination of sensors 68a . 70a . 72a have, for example, only one of the sensors described 68a . 70a . 72a or only two of the described sensors 68a . 70a . 72a or any other sensors. For example, it is also conceivable that the sensor unit 28a a sensor for directly detecting a type of fabric reservoir 36a , For example, based on an attached to this RFID chips.

The ejection device 10a also has at least one sensor interface 26a on, which is intended for connection to at least one sensor. In the present case, the sensor interface 26a for connection to a mobile device, not shown, such as a smartphone, a tablet, a data glasses, a smartband, a wearable or the like or provided with at least one sensor thereof. The sensor interface 26a is designed in the present case as a wireless data interface. The control and / or regulating unit is advantageous 22a via the sensor interface 26a connectable to a camera of the mobile device or to another sensor thereof. For example, the user can record at least one image of the skin by means of the camera of the mobile device, on the basis of which, in particular by means of at least one image analysis, the control and / or regulating unit 22a determines at least one ejection target parameter. It is also conceivable that the user is an image of the fabric reservoir 36a , in particular before its connection to the ejection device 10a , and / or an image of a packaging of the fabric reservoir 36a based on which a texture of the substance 12a , in particular by means of at least one database query, can be determined. In this way, the control and / or regulating unit 22a be provided to determine at least one substance parameter.

The ejection device 10a has at least one data interface 30a on which provided for a connection to at least one database is. The data interface 30a in the present case is integral with the sensor interface 26a educated. The data interface 30a but also from the sensor interface 26a be formed differently. The data interface 30a is designed as a wireless data interface. The control and / or regulating unit 22a is intended to obtain at least one parameter, for example an ejection target parameter and / or a substance parameter, from the database. In particular, the control and / or regulating unit 22a be provided to the parameter as a function of by means of the sensor unit 28a interrogated parameters and / or queried from the database depending on the operating parameters entered by the user, for example, to interrogate stored target values for the first and / or the second speed depending on a skin type, a skin color, an application, a Zielinjektionstiefe or the like / or to obtain correspondingly optimized PID values from the database. In addition, it is conceivable that the control and / or regulating unit 22a is intended to raw data or partially processed data for further processing by means of the data interface 30a to an external computing unit, for example to a virtual computer of a cloud, to transfer, in particular image data to an image analysis. Furthermore, the control and / or regulating unit 22a be provided to at least one by means of the data interface 30a to process the received analysis result and / or to determine at least one drive parameter based on such an analysis result.

In the 3 to 7 Further embodiments of the invention are shown. The following description is essentially limited to the differences between the embodiments, with respect to the same components, features and functions on the description of the embodiment of 1 and 2 can be referenced. To distinguish the embodiments, the letter a in the reference numerals of the embodiment in the 1 and 2 by the letters b to e in the reference numerals of the embodiments of the 3 to 7 replaced. With respect to identically designated components, in particular with regard to components with the same reference numerals, can in principle also to the drawings and / or the description of the embodiment of 1 and 2 to get expelled.

The 3 shows a first alternative ejection device 42b with a first alternative ejector 10b in a schematic perspective view. The 4 shows the first alternative ejector 10b in a schematic partial sectional view. The first alternative ejector 42b is formed in the present case as a tattoo machine. The first alternative ejector 10b is also formed in the present case as a tattoo machine device. The first alternative ejector 10b is to a jetting of a substance 12b intended. In addition, the first alternative ejection device 10b provided the substance 12b in and / or under a skin, in particular a human or a tattooing / marking animal. The first alternative ejector 10b has at least one drive unit 14b which leads to a generation of at least one actuating movement for at least one ejection element 16b is provided. The drive unit 14b has at least one at least partially magnetically deformable drive element 18b on.

The fabric 12b Contains at least one dye in the present case. For example, the substance 12b to be a liquid tattoo ink. Likewise, the substance may 12b comprise a powder of a pigment or a powdered pigment mixture and in particular be designed as such.

The drive element 18b is formed in the present case of a magnetic shape memory alloy. In particular, the drive element 18b an MSM drive element.

The drive unit 14b has a magnet unit 32b resulting in generation of a shape change magnetic field for the drive element 18b is provided. The shape change magnetic field is provided in the present case, in particular starting from an undeformed and / or stretched state of the drive element 18b , a contraction of the drive element 18b , in particular parallel to its longitudinal axis 44b to effect. The magnet unit 32b is intended to generate the shape change magnetic field such that its field lines in a region of the drive element 18b and / or within the drive element 18b at least substantially parallel to its longitudinal axis 44b run.

In the present case, the magnet unit 32b for generating the shape changing magnetic field, a coil 46b on. The sink 46b surrounds the drive element 18b , The drive element 18b is at least partially and advantageously completely within the coil 46b arranged. Windings of the coil 46b run around the longitudinal axis 44b of the drive element 18b around. A coil axis 74b the coil 46b is with the longitudinal axis 44b of the drive element 18b identical.

The ejection device 10b has a reset unit 38b with at least one return element 40b on. The reset element 40b is designed as a spring. In the present case that is Return element 40b a compression spring. The reset element 40b surrounds the drive element 18b , The reset element 40b is with bearing elements 76b . 78b for the drive element 18b connected. In a rebound presses the return element 40b the bearing elements 76b . 78b apart so that that, in particular along its longitudinal axis 44b shortened after ejection, drive element 18b along its longitudinal axis 44b is stretched.

The ejection device 10b has a discharge chamber 34b on. The ejection element 16b is like a piston in the ejection chamber 34b movably arranged. The ejection element 16b is about at least one transmission element 60b to the drive element 18b coupled such that a contraction of the drive element 18b a movement of the ejection element 16b inside the ejection chamber 34b causes. The transmission element 60b occurs through a conduct 80b into the ejection chamber 34b one. The transmission element 60b is partially within the ejection chamber 34b arranged. When ejecting the substance 12b the ejection element moves 16b on the implementation 80b to. Before ejecting the substance 12b this is common with the transmission element 60b on one side of the ejection element 16b arranged. The ejection chamber 34b has a discharge channel 54b on which exits laterally from this in the present case. When ejecting the substance 12b pushes the ejection element 16b to do this in one direction 80b to and into the discharge channel 54b , The drive unit 14b is designed in the present case as a pull actuator. In particular, the drive unit pulls 14b in the ejection of the substance 12b on the ejection element 16b ,

Of course, alternatively, a use of a pull actuator, in particular analogous to the embodiment of 1 and 2 conceivable. It is also conceivable that an ejection channel 54b on one of the drive unit 14b facing side of the ejection chamber 34b is arranged. It is also conceivable that a pull actuator is used in combination with a suitable translation mechanism, so that, for example, a pushing ejection element analogous to the case of 1 and 2 can be used.

The 5 shows a second alternative ejection device 10c in a schematic partial sectional view. The second alternative ejector 10c has a drive unit 14c with at least one drive element 18c on. The drive element 18c is formed in the present case of a magnetic shape memory alloy.

The second alternative ejector 10c has a reset unit 38c for the drive element 18c with a return element 40c on, which is at least partially formed of a magnetically deformable material. The reset element 40c in the present case is a drive element of a further drive unit 82c , In particular, the return element 40c to the drive element 18c the drive unit 14c be formed identical. The further drive unit 82c is to the drive unit 14c arranged antagonistically. The drive unit 14c and the further drive unit 82c are arranged in the manner of a pull-pull actuator and in particular form together such a. Preferably, the reset unit 38c and the drive unit 14c jointly provided for a deformation of the return element 40c to a reverse deformation of the drive element 18c to use and vice versa. It is also conceivable that the reset unit 38c provided is the deformation of the return element 40c to use at least a partial generation of a Befüllbewegung.

The 6 shows a third alternative ejection device 10d in a schematic partial sectional view. The third alternative ejector 10d has a drive unit 14d with at least one drive element 18d on. In addition, the third alternative ejection device 10d a reset unit 38d with at least one return element 40d on. The drive unit 14d and the reset unit 38d together form a push-push actuator, in particular an MSM push-push actuator. The third alternative ejector 10d is basically analogous to the second alternative ejection device 10c of the 5 formed, however, wherein an elongation of the drive element 18d or the return element 40d is used instead of a contraction for movement generation.

The 7 shows a fourth alternative ejection device 10e in a schematic sectional view. The fourth alternative ejector 10e is to a jetting of a substance 12e intended. The fourth alternative ejector 10e has a drive unit 14e with at least one at least partially magnetically deformable drive element 18e on. The drive unit 14e is in the 7 only partially shown.

The fourth alternative ejector 10e has an adjustment unit 20e which is provided for setting at least one function parameter. In the present case, the adjustment unit 20e to a setting of a target value of at least one speed of ejection of the substance 12e intended. The adjustment unit 20e may also be provided for adjusting an ejection volume.

The adjustment unit 20e has at least one at least partially mechanical adjustment 24e on. In the present case, the adjusting element 24e a purely mechanical adjustment. The adjustment element 24e is designed as a set screw. The adjustment element 24e is to a bias of one, in particular as a return element for the drive element 18e acting, spring element 84e intended. The adjustment element 24e is on the drive element 18e Movable to or away from this, in particular by means of a screw. By biasing the spring element 84e is a bias of the drive element 18e and in particular its deformation behavior adjustable.

Furthermore, the fourth alternative ejection device 10e an ejection chamber 34e as well as one in the ejection chamber 34e arranged ejection element 16e on. The ejection chamber 34e is changeable. In the present case, the ejection chamber 34e and the ejection element 16e formed mutually exchangeable.

The ejection element 16e is to a connection with a transmission element 60e the drive unit 14e intended. In particular, the connection may be a, in particular mechanical, quick connection, for example a click connection, a latching connection, a magnetic connection or the like.

The ejection chamber 34e and the ejection element 16e are in the present case parts of an interchangeable cartridge 86e , For example, with a defined maximum amount of the substance 12e , For example, an active ingredient. The interchangeable cartridge 86e may for example be provided for a single injection. For a new injection process then another interchangeable cartridge is to be used.

Claims (25)

Ejection device, in particular needle-free injection device, for ejecting at least one substance (12a, 12b), in particular an active substance and / or a dye, preferably a fluid and / or a powder, advantageously for injection into tissue, in particular in and / or under skin, with at least one drive unit (14a-e), which is provided for generating at least one actuating movement for at least one ejection element (16a; 16b; 16e), characterized in that the drive unit (14a-e) at least one at least partially magnetically deformable drive element (18a -e). Ejector after Claim 1 characterized by an adjusting unit (20a; 20e) provided for adjusting at least one functional parameter. Ejector after Claim 2 , characterized in that the setting unit (20a) comprises a control and / or regulating unit (22a) which is provided for driving the drive unit (14a). Ejector after Claim 2 or 3 , characterized in that the control and / or regulating unit (22a) is provided to at least partially automatically adjust at least one drive parameter for the drive unit (14a) as a function of at least one ejection parameter and / or as a function of at least one substance parameter. Ejector according to one of Claims 2 to 4 , characterized in that the adjusting unit (20e) has at least one at least partially mechanical adjusting element (24e). Ejecting device according to one of the preceding claims, characterized by at least one sensor interface (26a) which is provided for connection to at least one sensor. Ejection device according to one of the preceding claims, characterized by at least one sensor unit (28a), which is provided for detecting at least one parameter, in particular an ejection target parameter and / or a substance parameter. Ejecting device according to one of the preceding claims, characterized by at least one data interface (30a) which is provided for connection to at least one database. Ejection device according to one of the preceding claims, characterized in that the drive unit (14a) at least one controllable magnet unit (32a, 32b), which is provided for generating at least one shape changing magnetic field for the drive element (18a, 18b). Ejecting device according to one of the preceding claims, characterized by the ejection element (16a; 16b) and by at least one ejection chamber (34a; 34b) in which the ejection element (16a; 16b) is at least partly arranged in at least one operating state. Ejector after Claim 10 , characterized in that at least the ejection chamber (34e) is formed replaceable. Ejection device according to one of the preceding claims, characterized in that the drive unit (14a) is provided, in particular in at least one Eindringbetriebszustand, at least one ejection of the substance (12a) with at least a first speed and, in particular in at least one Zuführbetriebszustand, with at least one to effect a second speed different from the first speed. Ejector after Claim 12 , characterized in that the first speed is greater than 20 m / s and advantageously greater than 100 m / s. Ejector after Claim 13 , characterized in that the second speed is less than the first speed. Ejecting device according to one of the preceding claims, characterized by at least one fabric reservoir (36a, 36b), which is provided for receiving the material to be ejected (12a, 12b) in a circumference which is sufficient for more than one ejection operation. Ejecting device according to one of the preceding claims, characterized by at least one reset unit (38a-d) with at least one return element (40a-d), which is provided in at least one Rückverformungsbetriebszustand for generating a recovery force for the drive element (18a-d). Ejector after Claim 16 , characterized in that the restoring element (40c, 40d) is formed at least partially from a magnetically deformable material. Ejector after Claim 16 or 17 , characterized in that the restoring unit (38a, 38b) is provided for at least partially generating the restoring force from a compressive force of the fabric (12a, 12b). Ejector at least after one of Claims 16 to 18 , characterized in that the restoring unit (38a) is provided to produce at least one filling movement for at least one filling, in particular the ejection chamber (34a) and / or the fabric reservoir (36b), with the substance (12a). Ejecting device according to one of the preceding claims, characterized in that the drive element (18a) is at least partially formed from a magnetic shape memory alloy. Ejector after Claim 20 , characterized in that the magnetic shape memory alloy contains nickel, manganese and gallium. Ejector after Claim 20 or 21 , characterized in that the magnetic shape memory alloy is formed monocrystalline. Ejecting device, in particular needle-free injection device, in particular cloth application device and / or tattoo machine or the like, with at least one ejection device (10a, 10b) according to one of the preceding claims. Method with an ejection device (10a, 10b) according to one of Claims 1 to 22 , Use of an ejection device (10a, 10b) according to one of Claims 1 to 22 for injecting at least one substance (12a) into tissue, especially in skin.

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