CN111870330A

CN111870330A - Implantable bone lengthening device

Info

Publication number: CN111870330A
Application number: CN202010896254.1A
Authority: CN
Inventors: 马刘红; 滕利; 孙晓梅; 蒋海越; 祁佐良; 卢建建; 陈莹
Original assignee: Plastic Surgery Hospital of CAMS and PUMC
Current assignee: Plastic Surgery Hospital of CAMS and PUMC
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-03

Abstract

The application relates to an implantable bone lengthening device, and belongs to the technical field of medical equipment. The implantable bone extension device comprises a shell, a telescopic component, a driving component, a communication component, a control component and a power supply component, wherein a first fixing part is arranged on the shell; the telescopic assembly is inserted into the shell and is in sliding fit with the shell, and a second fixing part is arranged at the extending end of the telescopic assembly; the driving assembly is arranged in the shell and used for driving the telescopic assembly to extend out of or retract into the shell; the communication assembly is arranged in the shell and used for realizing data interchange and control with external control equipment in a non-contact manner; the control assembly is arranged in the shell, the driving assembly and the communication assembly are electrically connected with the control assembly, and the control assembly is used for responding to communication data of the communication assembly so as to control the driving assembly to work; the power supply assembly is used for supplying power for the driving assembly, the communication assembly and the control assembly. The implantable bone lengthening device can be wholly and completely embedded into soft tissues, and the compliance and the comfort of a patient are improved.

Description

Implantable bone lengthening device

Technical Field

The application relates to the technical field of medical equipment, in particular to an implantable bone lengthening device.

Background

With the technological progress and the improvement of living standard, people pay more attention to their health and beauty, and the continuous development and progress of medical technology and instruments is promoted. At present, in craniomaxillofacial surgery, the traditional bone extender adopted for treating short mandible, which is a short and small disease of the half lateral face, is a manual distraction osteogenesis device. The device is placed by adding an extra-oral auxiliary incision and remaining a rotatable extension rod, and the extension rod is manually rotated by a doctor or a patient to control the extension rod to enable the extension speed to be equivalent to the bone formation rate of new bones. Such manual mechanical adjustment is relatively complex to operate, patient compliance is poor, and accuracy is poor. The traditional extender implantation needs to be used as an external auxiliary incision to keep an extension rod, the sanitary nursing difficulty is high, and complications such as infection, necrosis and the like of bones and soft tissues easily occur, so that the whole treatment effect is influenced. In addition, after 6-7 months of treatment cycle, the auxiliary incision scar is usually left on the face, and the extension rod is exposed on the affected side face in the whole treatment process, so that a large psychological burden is caused on the patient. Therefore, there is a need for a novel bone lengthening device that overcomes the drawbacks of the existing devices, solves the practical clinical problems, and improves the comfort of the patient during the treatment.

Disclosure of Invention

An object of this application is to provide an implanted bone extension fixture, can wholly bury the soft tissue completely in, convenient nursing has improved patient's compliance and comfort level.

The application is realized by the following technical scheme:

the application provides an implantable bone extension device, includes:

the shell is provided with a first fixing part;

the telescopic assembly is inserted into the shell and is in sliding fit with the shell, and a second fixing part is arranged at the extending end of the telescopic assembly;

the driving assembly is arranged in the shell and used for driving the telescopic assembly to extend out of or retract into the shell;

the communication assembly is arranged in the shell and used for realizing data interchange and control with external control equipment in a non-contact manner;

the control assembly is arranged in the shell, the driving assembly and the communication assembly are electrically connected with the control assembly, and the control assembly is used for responding to communication data of the communication assembly so as to control the driving assembly to work;

and the power supply assembly is arranged in the shell and used for supplying power to the driving assembly, the communication assembly and the control assembly.

The implantable bone lengthening device can be integrally embedded into soft tissues of a patient; the power supply assembly is arranged, so that the power supply assembly can work for a long time; data exchange with external control equipment is realized through the communication assembly, the expansion amount of the expansion assembly is controlled remotely and accurately, and the bone lengthening condition is monitored in real time; meanwhile, the external auxiliary incision without retention is convenient for patient nursing, the compliance and comfort of the patient are improved, and the overall treatment effect is improved.

Optionally, a first cavity and a second cavity are formed inside the housing, the telescopic assembly and the driving assembly are arranged in the first cavity, and the communication assembly, the control assembly and the power supply assembly are arranged in the second cavity.

In the above embodiment, the telescopic assembly and the driving assembly are disposed in the first chamber, so as to facilitate telescopic driving of the telescopic assembly; communication subassembly, control assembly and power supply unit set up in the second cavity to electric elements's concentration, compact structure saves installation space.

Optionally, the telescopic assembly comprises a telescopic rod, the telescopic rod is arranged in the first cavity and is in sliding fit with the inner wall of the shell, the second fixing portion is detachably connected with the telescopic rod, and when the telescopic rod is in an initial state, the second fixing portion is located outside the shell.

In the above embodiment, the telescopic rod slides relative to the housing to achieve the stretching of the two fractured bones.

Optionally, the second fixing portion includes a connecting seat and a first fixing seat that are connected, the connecting seat is connected with an end portion of the telescopic rod, the first fixing seat is of an L-shaped structure, the first fixing seat is disposed outside the connecting seat, the first fixing seat includes a first seat body and a second seat body, the first seat body extends along a length direction of the telescopic rod, the second seat body is perpendicular to the length direction of the telescopic rod, and the first seat body and the second seat body are respectively provided with a plurality of first fixing holes.

In the above embodiment, the connecting seat can realize the connection between the first fixing seat and the telescopic rod, so as to facilitate the positioning of the first fixing seat and the fractured bone; the arrangement form of the first fixing seat saves the whole space occupation on the premise of ensuring that the first fixing seat has a larger contact surface with a broken bone.

Optionally, the drive assembly comprises a motor and a lead screw, the lead screw is connected with the output end of the motor, the telescopic rod is of an internal hollow structure, a threaded hole corresponding to the lead screw is formed in the telescopic rod, the telescopic rod is in threaded fit with the lead screw, and the motor is used for driving the lead screw to rotate so as to drive the telescopic rod to extend out or retract relative to the shell.

In the embodiment, the motor screw driving mode is adopted, so that the telescopic precision of the telescopic rod is ensured, and the telescopic amount of the telescopic rod is conveniently and accurately controlled.

Optionally, the side wall of the telescopic rod is provided with a sliding block, the side wall of the first chamber is provided with a sliding groove corresponding to the sliding block, and the sliding block is configured to be movably arranged in the sliding groove.

In the above embodiment, the sliding block is matched with the sliding groove, so that the telescopic rod can move flexibly and stably relative to the shell.

Optionally, the first fixing portion is provided with at least one, each first fixing portion is connected to the side wall of the casing, the first fixing portion includes a connecting lug and a second fixing seat, a gap is formed between the second fixing seat and the casing, the second fixing seat is provided with a plurality of second fixing holes, and the plurality of second fixing holes are arranged at intervals along the length direction of the casing.

In the above embodiment, the arrangement form of the first fixing part facilitates the physician to adjust the position of the second fixing seat according to the requirement, so as to be better fixed on the fractured bone.

Optionally, the first fixing portions are arranged in two numbers, and the two first fixing portions are symmetrically distributed on two sides of the shell.

In the above embodiment, the two first fixing portions are provided to ensure the fixing stability of the housing.

Optionally, the shell includes a first positioning surface, a second positioning surface, and a transition surface, the first positioning surface and the second positioning surface are disposed opposite to each other, the first positioning surface and the second positioning surface are planes, the transition surface connects the first positioning surface and the second positioning surface, and the transition surface is a smooth curved surface.

In the above embodiment, the first positioning surface and the second positioning surface are arranged in a plane, so that the shell can have a larger contact surface with the fractured bone and soft tissue, and the shell can be conveniently attached; the smooth arrangement of the transition surface can avoid cutting or scratching soft tissues and has a protection effect.

Optionally, the implantable bone extension device further comprises a sensor unit comprising a temperature sensor, a pressure sensor, a pH sensor.

In the above embodiment, the sensor unit is provided to assist a physician in determining the growth between fractured bones.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is an exploded view of an implantable bone extension device provided in accordance with an embodiment of the present application;

FIG. 2 is a diagram illustrating the control relationship of various components of an implantable bone extension device according to one embodiment of the present application;

FIG. 3 is a cross-sectional view of a housing of an implantable bone extension device provided in accordance with an embodiment of the present application;

FIG. 4 is a schematic structural view of an implantable bone extension device according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a housing of an implantable bone extension device provided in accordance with an embodiment of the present application;

fig. 6 is a flowchart illustrating operation of an implantable bone lengthening device according to an embodiment of the present application.

Icon: 100-an implantable bone extension device; 10-a housing; 11-a first chamber; 111-a chute; 12-a second chamber; 13-a first end; 14-a second end; 15-a first location surface; 16-a second positioning surface; 17-a transition surface; 18-a first end cap; 19-a second end cap; 191-avoidance port; 20-a telescoping assembly; 21-a telescopic rod; 211-a second mounting hole; 212-a slider; 30-a drive assembly; 31-a motor; 32-a lead screw; 40-a communication component; 50-a control assembly; 60-a power supply assembly; 71-a first fixed part; 711-connecting lugs; 712-a second holder; 7121-second fixing hole; 72-a second fixed part; 721-a connecting seat; 7211-a first mounting hole; 722-a first fixed seat; 7221-a first seat; 7222-a second seat; 7223-a first fixing hole; 73-gap; 74-a pin; 80-a sensor unit; 90-memory cell.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the application usually place when using, and are only used for convenience in describing the present application and simplifying the description, but do not indicate or imply that the devices or elements that are referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In craniomaxillofacial surgery, to the treatment of short and small mandible, extension rod is kept somewhere to traditional bone extension apparatus at patient's extraoral supplementary incision, and its health nursing degree of difficulty is high, and complication such as the infection, the necrosis of bone and soft tissue appear easily, influences whole treatment. Based on the above-described problems, or other potential problems, with existing bone extender instruments, the inventors have provided an implantable bone extender device that can be embedded within soft tissue.

An implantable bone extension device according to an embodiment of an aspect of the present application is described below with reference to the figures.

As shown in fig. 1-6, an implantable bone extension device 100 according to an embodiment of the present application includes: the device comprises a shell 10, a telescopic assembly 20, a driving assembly 30, a communication assembly 40, a control assembly 50 and a power supply assembly 60.

Specifically, the housing 10 is provided with a first fixing portion 71 for fixing to one of two fractured bones. The housing 10 is a hollow structure, the telescopic assembly 20 is inserted into the housing 10 and is slidably engaged with the housing 10, and the telescopic assembly 20 can extend or retract relative to the housing 10. The protruding end of the telescopic assembly 20 is provided with a second fixing portion 72 for fixing to the other of the two fractured bones to stretch the two fractured bones by the protruding of the telescopic assembly 20 in cooperation with the first fixing portion 71. A drive assembly 30 is disposed within the housing 10, the drive assembly 30 being capable of driving the retraction assembly 20 to extend out of or retract into the housing 10. The communication component 40 is disposed in the housing 10, and the communication component 40 can exchange data with an external control device in a non-contact manner. The control assembly 50 is disposed in the housing 10, the driving assembly 30 and the communication assembly 40 are electrically connected to the control assembly 50, and the control assembly 50 is configured to respond to the communication data of the communication assembly 40 to control the driving assembly 30 to operate. The power supply assembly 60 is disposed in the housing 10, and the power supply assembly 60 is used for supplying power to the driving assembly 30, the communication assembly 40, the control assembly 50 and other electrical components.

The implantable bone extension device 100 can be wholly embedded within the soft tissue of a patient; the power supply assembly 60 is arranged, so that the device can work for a long time; data exchange with external control equipment is realized through the communication component 40, the stretching amount of the stretching component 20 is controlled remotely and accurately, and the bone lengthening condition is monitored in real time; meanwhile, the external auxiliary incision without retention is convenient for patient nursing, the compliance and comfort of the patient are improved, and the overall treatment effect is improved.

In an embodiment of the present application, as shown in fig. 3, the housing 10 is internally formed with a first chamber 11 and a second chamber 12. The telescopic assembly 20 and the driving assembly 30 are disposed in the first chamber 11, and the communication assembly 40, the control assembly 50 and the power supply assembly 60 are disposed in the second chamber 12. The telescopic assembly 20 and the driving assembly 30 are arranged in the first chamber 11, so that telescopic driving of the telescopic assembly 20 is realized; the communication assembly 40, the control assembly 50 and the power supply assembly 60 are disposed in the second chamber 12, so as to facilitate the concentration of the electrical components, and have a compact structure and save installation space.

As shown in fig. 1 and 3, the housing 10 is shaped like a rectangular parallelepiped, and the housing 10 includes a first end 13 and a second end 14 opposite to each other. The first chamber 11 extends in the length direction of the housing 10 and penetrates both ends of the housing 10. The driving assembly 30 is disposed at a position near the first end 13 of the first chamber 11, one end of the telescopic assembly 20 is connected to the driving assembly 30, and the other end of the telescopic assembly 20 is configured to extend out of the first chamber 11 from the second end 14. The second chamber 12 is opened at the first end 13 and extends toward the second end 14, and the communication module 40, the control module 50 and the power supply module 60 can be placed in the second chamber 12 through the first end 13.

In an embodiment of the present application, at least one first fixing portion 71 is provided, each first fixing portion 71 is connected to a side wall of the housing 10, as shown in fig. 1, the first fixing portion 71 includes a connecting lug 711 and a second fixing seat 712, a gap 73 is provided between the second fixing seat 712 and the housing 10, the second fixing seat 712 is provided with a plurality of second fixing holes 7121, and the plurality of second fixing holes 7121 are spaced along a length direction of the housing 10. The first fixing portion 71 is configured to facilitate a physician to adjust the position of the second fixing seat 712 according to the requirement, so as to fix the fractured bone better.

During the operation, the fixing position of the first fixing portion 71 needs to be adjusted based on the installation position of the housing 10 of the patient, and the physician generally needs to bend the first fixing portion 71, and the arrangement of the connecting lug 711 and the second fixing seat 712 is convenient for the adjusting member (e.g. titanium plate forming forceps, titanium plate bending forceps, titanium plate cutting forceps, etc.) to clamp the second fixing seat 712 to bend the second fixing seat 712, so as to adjust the shape of the second fixing seat 712 to fit the bone surface. The bending here means bending the second fixing base 712 in the thickness direction of the housing 10, for example: one end of the second fixing seat 712 far from the connecting lug 711 can be slightly bent to adapt to a convex or concave bone surface; the second fixing seat 712 and the engaging lug 711 may be bent in the thickness direction of the housing 10 by an appropriate amount according to circumstances. Meanwhile, the second fixing seat 712 can also be cut in the length direction according to actual requirements.

Alternatively, as shown in fig. 4, two first fixing portions 71 are provided, and the two first fixing portions 71 are symmetrically distributed on two sides of the housing 10. The two first fixing portions 71 are arranged to ensure that the housing 10 is firmly fixed on the fractured bone.

In an embodiment of the present application, as shown in fig. 4, the housing 10 includes a first positioning surface 15, a second positioning surface 16, and a transition surface 17, the first positioning surface 15 and the second positioning surface 16 are disposed opposite to each other, the first positioning surface 15 and the second positioning surface 16 are flat surfaces, the transition surface 17 connects the first positioning surface 15 and the second positioning surface 16, and the transition surface 17 is a smooth curved surface. The first positioning surface 15 and the second positioning surface 16 are arranged in a plane, so that the shell 10 has a larger contact surface with broken bones and soft tissues, and is convenient to attach; the smooth arrangement of the transition surface 17 can avoid cutting or scratching soft tissues, thereby playing a role in protection.

Referring to fig. 3, the first chamber 11 extends from a first end 13 to a second end 14, and penetrates through two ends of the housing 10; the second chamber 12 extends from the first end 13 towards the second end 14, and the second chamber 12 does not extend through the housing 10. In one embodiment of the present application, as shown in FIG. 1, the implantable bone extension device 100 further includes a first end cap 18 and a second end cap 19. The first end cap 18 is disposed at the first end 13 of the housing 10 and detachably connected to the end surface of the housing 10 at the first end 13, and the first end cap 18 is used for sealing the opening of the first chamber 11 and the opening of the second chamber 12 to prevent components located in the first chamber 11 and the second chamber 12 from falling out of the first chamber 11 and the second chamber 12 through the first end 13 of the housing 10. A second end cap 19 is disposed at the second end 14 of the housing 10, the second end cap 19 is detachably connected to the end surface of the housing 10 at the second end 14, and the second end cap 19 is used for blocking the opening of the first chamber 11 at the second end 14 of the housing 10 to prevent the components in the first chamber 11 from falling out of the first chamber 11 through the second end 14 of the housing 10. The second end cap 19 is provided with an avoiding opening 191 through which the telescopic assembly 20 passes, so that the telescopic assembly 20 can extend and retract conveniently.

It should be noted that, since the implantable bone extension device 100 needs to be implanted into the tissue of the human body, the first end cap 18 and the second end cap 19 are both in sealing engagement with the housing 10 to ensure the sealing performance of the first chamber 11 and the second chamber 12.

The structural form of the housing 10 may be any suitable form, and may include, but is not limited to, integral molding, splicing.

In an embodiment of the present application, the housing 10 is integrally formed, so as to ensure the structural strength of the whole, and facilitate the manufacturing.

In another embodiment of the present application, the housing 10 is of a split-type construction. Optionally, the housing 10 includes a first portion and a second portion disposed along a thickness direction thereof, and the first portion and the second portion enclose a first chamber 11 and a second chamber 12. When the integral assembly is carried out, the telescopic assembly 20 and the driving assembly 30 are firstly positioned at the corresponding positions of the first part, the electric elements such as the communication assembly 40, the control assembly 50 and the power supply assembly 60 are positioned at the corresponding positions of the second part, the joint of the first part and the second part is coated with sealant, then the first part and the second part are butted and fixed, and the first part and the second part are welded to ensure the connection strength of the first part and the second part. The casing 10 of concatenation formula structure is convenient for the installation location of each part inside the casing 10 to reduce the installation degree of difficulty, improve assembly efficiency.

In one embodiment of the present application, as shown in fig. 1, the telescopic assembly 20 includes a telescopic rod 21, and the telescopic rod 21 is disposed in the first chamber 11 and slidably engaged with the inner wall of the housing 10. The second fixing portion 72 is detachably connected to the telescopic rod 21, and when the telescopic rod 21 is in the initial state, the second fixing portion 72 is located outside the housing 10. The telescopic rod 21 slides relative to the housing 10 to achieve the stretching of the two fractured bones. It should be noted that the telescopic rod 21 is in sealing engagement with the second end cap 19 to ensure the tightness of the first chamber 11.

As shown in fig. 1 and 4, the second fixing portion 72 includes a connecting seat 721 and a first fixing seat 722, the connecting seat 721 is connected to the end of the telescopic rod 21, the first fixing seat 722 is L-shaped, and the first fixing seat 722 is disposed outside the connecting seat 721. The first fixing seat 722 includes a first seat 7221 and a second seat 7222, the first seat 7221 extends along the length direction of the telescopic rod 21, the second seat 7222 is perpendicular to the length direction of the telescopic rod 21, and the first seat 7221 and the second seat 7222 are respectively provided with a plurality of first fixing holes 7223. The connecting seat 721 can realize the connection between the first fixing seat 722 and the telescopic rod 21, so as to facilitate the positioning between the first fixing seat 722 and the fractured bone; the arrangement form of the first fixing seat 722 can save the whole occupied space on the premise of ensuring that the first fixing seat has a larger contact surface with the broken bone.

In order to adapt to different bone surfaces, the fixing position of the first fixing seat 722 can be adjusted by bending the first fixing seat 722 through the adjusting piece. The bending here means that the first fixing seat 722 is bent in the thickness direction of the housing 10, for example: an end of second housing 7222 remote from first housing 7221 may be slightly bent to accommodate a convex or concave facet. Meanwhile, the second seat 7222 may be cut in the length direction according to actual requirements.

Optionally, the connecting seat 721 is sleeved outside the telescopic rod 21 and connected to the telescopic rod 21 through a pin 74, so as to ensure the connection strength between the connecting seat 721 and the telescopic rod 21, and facilitate quick connection between the connecting seat 721 and the telescopic rod 21. As shown in fig. 1 and 4, a first mounting hole 7211 is formed in the connecting seat 721, a second mounting hole 211 corresponding to the first mounting hole 7211 is formed in the telescopic rod 21, and during assembly, the connecting seat 721 and the telescopic rod 21 are locked by a pin 74 penetrating through the first mounting hole 7211 and the second mounting hole 211.

In one embodiment of the present application, as shown in fig. 1, the driving assembly 30 includes a motor 31 and a lead screw 32. The motor 31 is installed in the first chamber 11, the lead screw 32 is connected to an output end of the motor 31, the telescopic rod 21 is in threaded fit with the lead screw 32, and the motor 31 is used for driving the lead screw 32 to rotate so as to drive the telescopic rod 21 to extend or retract relative to the housing 10. The motor 31 and the lead screw 32 are used for driving, so that the telescopic precision of the telescopic rod 21 is ensured, and the telescopic amount of the telescopic rod 21 can be accurately controlled.

Alternatively, the motor 31 is a stepping motor 31, and the stepping motor 31 can precisely control the rotation of the lead screw 32 to achieve precise control of the expansion and contraction amount of the expansion and contraction rod 21.

In an embodiment of the present application, as shown in fig. 1, a side wall of the telescopic rod 21 is provided with a sliding block 212, as shown in fig. 5, a side wall of the first chamber 11 is provided with a sliding slot 111 corresponding to the sliding block 212, and the sliding block 212 is configured to be movably disposed in the sliding slot 111. Through the cooperation of the sliding block 212 and the sliding groove 111, the flexible and stable movement of the telescopic rod 21 relative to the housing 10 is ensured.

Optionally, the sliding block 212 is disposed at a position of the telescopic rod 21 close to the first end 13 of the housing 10, and after the telescopic rod 21 extends outward for a long length relative to the housing 10, the sliding block 212 can be blocked by the second end cap 19 to prevent the telescopic rod 21 from sliding out of the first chamber 11.

It should be noted that the housing 10, the telescopic rod 21, the lead screw 32, the first end cap 18, and the second end cap 19 are all made of hard metal, alloy, or polymer with good biocompatibility.

In an embodiment of the present application, the communication component 40 includes a communication chip and an antenna, and the communication chip and the external control device implement data interchange and manipulation through a non-contact communication technology. Communication technologies include, but are not limited to, bluetooth technology, near field communication technology, and wireless lan technology.

In an embodiment of the present application, the control assembly 50 includes a control unit, which may be a controller. The implantable bone extension device 100 further includes a memory unit 90, the memory unit 90 may be a memory, and the memory unit 90 is a storage space for the operation program and the generated data required by the implant (for short, the implantable bone extension device 100), and is a necessary component for supporting the normal operation of the control component 50. The control unit is the operation and control core of the implant, is the final execution unit of information processing and program operation, and is responsible for regulating and controlling the functions of the driving component 30, the communication component 40 and the additional sensor. As shown in fig. 2, a control diagram of the components of the implantable bone extension device 100 of the present application is shown.

The implantable bone extension device 100 also includes a sensor unit 80. The sensor unit 80 is electrically connected to the control assembly 50, and the control assembly 50 can receive the data signal transmitted by the sensor unit 80, process the data signal, and then control the driving assembly 30 to perform an action. The sensor unit 80 includes, but is not limited to, a temperature sensor, a pressure sensor, a pH sensor. The additional sensor can measure and record the change of temperature, pressure, pH value and the like at the fracture in real time, and assists a doctor to judge the growth condition between the fractured bones.

It should be noted that the power supply assembly 60 includes a battery pack including, but not limited to, a rechargeable/non-rechargeable lithium battery, a dry cell battery, etc. to provide electrical power to the various electrical components.

The implantable bone lengthening device 100 provided by the present application has the function of regulating and controlling displacement according to program setting, and can record and transmit operation records. The implantable bone lengthening device 100 of the present application is intelligent, can be autonomously controlled and record the lengthening distance through a preset program, and can be controlled and read through an external control device. The external control device is a control medium for implementing human-machine interaction of the implanted bone extension apparatus 100, including but not limited to a mobile phone application program, a controller, and the like, and is mainly capable of performing convenient and safe information interaction and control with the implanted bone extension apparatus 100 in a non-contact manner. The data interaction and control process for the implantable bone lengthening device 100 via the external control device is generally as follows: verifying a secret key; recording and matching; uploading instructions or programs; executing the instruction or the program; fifthly, feeding back and recording the execution result. Fig. 6 is a flowchart illustrating the operation of the implantable bone extension device 100 of the present application.

It should be noted that the implantable bone lengthening device 100 is not limited to lengthening of the mandible, but may be applied to lengthening of bones in other locations; implantable bone lengthening devices 100 of different sizes and specifications are selected according to different application environments.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An implantable bone extension device, comprising:

the shell is provided with a first fixing part;

2. The implantable bone extension device of claim 1, wherein the housing defines a first chamber and a second chamber within an interior thereof, the retraction assembly, the drive assembly disposed within the first chamber, and the communication assembly, the control assembly, and the power supply assembly disposed within the second chamber.

3. The implantable bone extension device of claim 2, wherein the retraction assembly comprises a retraction rod disposed within the first chamber and slidably engaged with an inner wall of the housing, the second securing portion being detachably coupled to the retraction rod, the second securing portion being located outside of the housing when the retraction rod is in the initial state.

4. The implantable bone lengthening device according to claim 3, wherein the second fixing portion comprises a connecting seat and a first fixing seat connected to each other, the connecting seat is connected to an end of the telescopic rod, the first fixing seat is of an L-shaped structure, the first fixing seat is disposed outside the connecting seat, the first fixing seat comprises a first seat body and a second seat body, the first seat body extends along a length direction of the telescopic rod, the second seat body is disposed perpendicular to the length direction of the telescopic rod, and the first seat body and the second seat body are respectively provided with a plurality of first fixing holes.

5. The implantable bone lengthening device according to claim 3, wherein the driving assembly comprises a motor and a lead screw, the lead screw is connected to an output end of the motor, the telescopic rod is of a hollow structure, a threaded hole corresponding to the lead screw is formed in the telescopic rod, the telescopic rod is in threaded fit with the lead screw, and the motor is used for driving the lead screw to rotate so as to drive the telescopic rod to extend or retract relative to the housing.

6. The implantable bone lengthening device of claim 5, wherein a side wall of the telescoping rod is provided with a slider, and a side wall of the first chamber is provided with a sliding slot corresponding to the slider, the slider configured to be movably disposed within the sliding slot.

7. The implantable bone extension device of claim 1, wherein the first fixation portions are provided with at least one, each of the first fixation portions is connected to a side wall of the housing, the first fixation portions include engaging lugs and a second fixation seat with a gap therebetween, the second fixation seat is provided with a plurality of second fixation holes, and the plurality of second fixation holes are spaced apart along a length of the housing.

8. The implantable bone extension device of claim 1, wherein there are two first fixation portions, and the two first fixation portions are symmetrically distributed on two sides of the housing.

9. The implantable bone extension device of claim 1, wherein the housing comprises a first positioning surface, a second positioning surface, and a transition surface, the first positioning surface and the second positioning surface are disposed opposite to each other, the first positioning surface and the second positioning surface are flat surfaces, the transition surface connects the first positioning surface and the second positioning surface, and the transition surface is a smooth curved surface.

10. The implantable bone extension device of claim 1, further comprising:

the sensor unit comprises a temperature sensor, a pressure sensor and a pH sensor.