TWM651676U - Dry powder inhalation device - Google Patents

Abstract

A dry powder inhalation device includes a guiding housing, a suction nozzle assembly, a accommodating chamber, an acupuncture assembly and a sliding sleeve. The suction nozzle assembly is disposed on one side of the guiding housing. The accommodating chamber is disposed in the guiding housing, and the accommodating chamber includes a first accommodating part and a second accommodating part. The acupuncture assembly includes an acupuncture and a base. The acupuncture is connected to the base, and part of the acupuncture is located in the first accommodation part of the accommodating chamber. The sliding sleeve is disposed on the opposite side of the guiding housing and is connected to the base of the acupuncture assembly, and the sliding sleeve can move relative to the guiding housing. When the sliding sleeve moves relative to the guiding housing and moves toward the suction nozzle assembly, the sliding sleeve simultaneously drives the base to move toward the suction nozzle assembly, and during the movement of the base, it drives the acupuncture from the first accommodating part to move into the second accommodating part.

Description

Dry powder inhalation device

The present invention relates to the field of inhalation drug delivery devices, in particular to a disposable dry powder inhalation device.

With the continuous improvement of preparations and dosage forms of inhaled drugs, inhaled therapy has become the preferred drug delivery method for respiratory tract and lung diseases. In addition to being easy to use, the biggest feature of this method is that after the patient inhales the drug, the high-concentration drug is directly and quickly administered. It acts on target organs, achieves rapid effects, has high efficacy and therapeutic index, and has good clinical safety.

At present, inhalation devices used in inhalation therapy, such as those with multi-dose and stored-dose types, have complex structures and are expensive, making it difficult to popularize them. Also, like a general single-dose capsule inhalation device, when used, the drug capsule is placed in the drug compartment. After being punctured by a needle, the capsule rotates with the inhalation airflow and releases the drug particles contained therein.

Although the above-mentioned general single-dose capsule inhalation device has a simple structure, its shortcomings are: 1. The patient may inhale the broken capsule shell into the lungs when inhaling, which brings safety risks to the treatment. 2. The capsule is not easy to be punctured. If the capsule is not broken, the patient will not be able to inhale the powder. 3. The medicinal powder is difficult to be sucked clean by the patient, which not only affects the efficacy but also wastes the medicine.

Therefore, how to solve the above problems has become the focus of relevant people in this field.

One aspect of this invention is to propose a dry powder inhalation device to solve the problems caused by the prior art.

According to one embodiment of the invention, a dry powder inhalation device includes a guide housing, a nozzle assembly, a receiving cavity, a lancet assembly and a sliding sleeve. The suction nozzle assembly is arranged on one side of the guide housing. The accommodating cavity is arranged in the guide housing, and the accommodating cavity includes a first accommodating part and a second accommodating part. The lancet assembly includes a lancet and a base. The lancet is connected to the base, and part of the lancet is located in the first accommodation part of the accommodation cavity. The sliding sleeve is disposed on the opposite side of the guide housing and is connected to the base of the lancet assembly, and the sliding sleeve is movable relative to the guide housing. When the sliding sleeve moves relative to the guide housing and moves toward the suction nozzle assembly, the sliding sleeve simultaneously drives the base to move toward the suction nozzle assembly, and during the movement of the base, drives the lancet from the first container. The part moves into the second containing part.

According to one or more embodiments of the present invention, the above-mentioned suction nozzle assembly includes a suction nozzle and a connecting sleeve. The suction nozzle has a first connecting part. The connecting sleeve has a first stopper bump. The first stopper bump is connected from The inner wall surface of the sleeve protrudes and defines a first sleeve section and a second sleeve section in the connecting sleeve. The first sleeve section is sleeved on the first connecting part of the suction nozzle, and the second sleeve section is sleeved on the first connection part of the suction nozzle. Located on one side of the guide housing.

According to one or more embodiments of the present invention, the above-mentioned suction nozzle further has a protruding part, the protruding part is arranged at the first connecting part, and the connecting sleeve further has a groove part, and the groove part is formed from the inner wall surface of the connecting sleeve. It is recessed and located in the first sleeve section. When the first sleeve section is sleeved on the first connecting part of the suction nozzle, the protruding part of the suction nozzle engages in the groove part of the connection sleeve.

According to one or more embodiments of the present invention, the above-mentioned guide housing has an engaging groove, and the connecting sleeve further has at least one convex block. The engaging groove is recessed from the outer surface of the guide housing, and the convex block is formed from the connecting sleeve. The inner wall surface of the barrel protrudes and is located in the second sleeve section. When the second sleeve section is sleeved on one side of the guide housing, the convex block of the connecting sleeve engages with the guide housing. inside the tank.

According to one or more embodiments of the present invention, the above-mentioned connecting sleeve further has an anti-slip structure, and the anti-slip structure is arranged on the outer wall surface of the connecting sleeve.

According to one or more embodiments of the invention, the above-mentioned suction nozzle can be replaced with another suction nozzle of different types or sizes.

According to one or more embodiments of the present invention, the above-mentioned guide housing has a second stopper protrusion. The second stopper protrusion protrudes from the inner surface of the guide housing and is connected with the first stopper of the connecting sleeve. The bumps correspond to each other, and the second stop bump defines a first accommodating section and a second accommodating section in the guide housing. The first accommodating section is away from the suction nozzle assembly, and the second accommodating area The section is close to the suction nozzle assembly, and the accommodating cavity is located in the first accommodating section.

According to one or more embodiments of the present invention, the above-mentioned dry powder inhalation device further includes a screen structure. The screen structure includes a grid part and a second connection part. The second connection part is located in the second accommodation section of the guide housing. inside, and the mesh part is located between the first stopper bump and the second connection part of the connection sleeve, and the second connection part is between the mesh part and the second stopper bump of the guide housing.

According to one or more embodiments of the present invention, the above-mentioned grid part has a plurality of holes, and the diameter of each hole is smaller than the diameter of the lancet of the lancet assembly.

According to one or more embodiments of the present invention, the above-mentioned guide housing has a first guide groove and a second guide groove, and the first guide groove and the second guide groove are respectively recessed from the outer surface of the guide housing. The guide groove extends toward the first axial direction, the second guide groove extends toward the second axial direction and is connected to the first guide groove, and the first axial direction and the second axial direction are not parallel to each other.

According to one or more embodiments of the present invention, the above-mentioned sliding sleeve has a sliding block, and the sliding block protrudes from the inner surface of the sliding sleeve. When the sliding sleeve moves relative to the guide housing, the sliding sleeve drives the sliding block in sequence. The first guide groove and the second guide groove move in the first guide groove. When the slider moves in the first guide groove, the sliding sleeve rotates relative to the guide housing. When the slider moves in the second guide groove, the sliding sleeve is relatively guided. The housing moves toward the nozzle assembly.

According to one or more embodiments of the invention, the above-mentioned sliding sleeve has an anti-skid structure, and the anti-skid structure is arranged on the outer surface of the sliding sleeve.

According to one or more embodiments of the present invention, the above-mentioned dry powder inhalation device further includes a coil spring, and the coil spring is disposed between the second accommodating part of the accommodating cavity and the base of the lancet assembly.

According to one or more embodiments of the present invention, the above-mentioned guide housing further has a recessed portion, and the lancet assembly further includes a protruding portion. The protruding portion extends from the base and corresponds to the recessed portion. When the base drives the lancet from When the first accommodating part moves to the second accommodating part, the protruding part engages in the recessed part and makes a sound. When the external force exerted on the sliding sleeve is released, the base is pushed by the elastic restoring force generated by the coil spring. The base moves in a direction away from the suction nozzle assembly, and during the movement of the base, the protruding portion is simultaneously driven to move in a direction away from the suction nozzle assembly and separated from the recessed portion.

According to one or more embodiments of the present invention, the outer edge of the above-mentioned protruding portion is arc-shaped.

According to one or more embodiments of the present invention, the second accommodation part of the above-mentioned accommodation cavity is used to accommodate a container coated with dry powder, the container coated with dry powder is used to coat dry powder, and the container coated with dry powder has The long axis and the short axis are perpendicular to each other, and the length of the needle is greater than the length of the long axis.

According to one or more embodiments of this invention, the above-mentioned dry powder inhalation device further includes a tearable shrink film, and the tearable shrink film is disposed on the outer surface of the guide housing and the outer surface of the sliding sleeve.

In summary, through the above structural design, the dry powder inhalation device of this creative embodiment has a simple structure and is disposable and can avoid repeated use. In addition, through the above structural design, the dry powder inhalation device of this creative embodiment can It can reliably pierce capsules or other containers covering dry powder, so that the dry powder, such as medicinal powder, in the capsule or other containers covering dry powder can be fully inhaled by the patient, thereby increasing the dose of the inhaled medicinal powder.

A plurality of implementations of the invention will be disclosed below through drawings. For the sake of clarity, many practical details will be explained together in the following description. However, those skilled in the art should understand that in some implementations of the present invention, these practical details are not necessary and therefore are not used to limit the present invention. In addition, for the sake of simplifying the drawings, some commonly used structures and components will be illustrated in a simple schematic manner in the drawings. In addition, for the convenience of readers, the dimensions of each element in the drawings are not drawn according to actual proportions.

Please refer to Figures 1 to 3. Figure 1 is a schematic structural diagram of the appearance of a dry powder inhalation device according to an embodiment of the present invention. Figure 2 is an exploded schematic diagram of the dry powder inhalation device shown in Figure 1 . Figure 3 is a schematic cross-sectional view along line AA of the dry powder inhalation device shown in Figure 1 . Figure 4 is a partially enlarged schematic diagram of area Z shown in Figure 3 . Figure 5 is a schematic diagram of the appearance of the screen structure shown in Figure 2. Figure 6 is a schematic diagram of the connection relationship between the guide housing and the sliding sleeve shown in Figure 2. Figure 7 is a schematic cross-sectional view of the guide housing and sliding sleeve shown in Figure 6 after assembly.

As shown in FIGS. 1 to 7 , the dry powder inhalation device 1 of this embodiment includes a guide housing 10 , a nozzle assembly 11 , an accommodation cavity 12 , a lancet assembly 13 and a sliding sleeve 14 . The suction nozzle assembly 11 is arranged on one side of the guide housing 10 . The accommodating cavity 12 is arranged in the guide housing 10 , and the accommodating cavity 12 includes a first accommodating part 121 and a second accommodating part 122 . The lancet assembly 13 includes a lancet 131 and a base 132 . The lancets 131 of the lancet assembly 13 are connected to the base 132, and part of the lancets 131 are located in the first accommodating part 121 of the accommodating cavity 12, and the second accommodating part 122 of the accommodating cavity 12 is used to accommodate the package. Container C covered with dry powder. The sliding sleeve 14 is disposed on the opposite side of the guide housing 10 and is connected to the base 132 of the lancet assembly 13 , and the sliding sleeve 14 can move relative to the guide housing 10 . In this embodiment, the container C covering the dry powder is, for example, a capsule, and the dry powder is, for example, medicinal powder, but the invention is not limited thereto.

In this embodiment, the sliding sleeve 14 of the dry powder inhalation device 1 moves relative to the guide housing 10 and moves toward the nozzle assembly 11 in response to the push of external force. During the movement of the sliding sleeve 14 relative to the guide housing 10 , the sliding sleeve 14 simultaneously drives the base 132 of the lancet assembly 13 to move in a direction closer to the suction nozzle assembly 11 , and during the movement of the base 132 of the lancet assembly 13 At the same time, the lancet 131 is driven to move from the first accommodating part 121 of the accommodating cavity 12 to the second accommodating part 122 and pierce the container C covering the dry powder, so that the dry powder is released from the container C covering the dry powder. At this time, The user can inhale the dry powder into the human oral cavity and lungs through the nozzle assembly 11 .

It should be noted that the above-mentioned container C coated with dry powder has a long axis The length of The dry powder container C enables the dry powder in the container C covering the dry powder to be released smoothly.

It should be noted that the inhalation direction in which the above-mentioned user inhales dry powder into the human oral cavity or lungs through the nozzle assembly 11 is the same as the inhalation direction in which the lancet 131 pierces the container C covering the dry powder after the lancet assembly 13 is driven by the sliding sleeve 14 .

Other detailed structures of the dry powder inhalation device 1 of this embodiment will be further described below.

As shown in FIGS. 1 to 7 , the suction nozzle assembly 11 of this embodiment includes a suction nozzle 111 and a connecting sleeve 112 . The suction nozzle 111 of the suction nozzle assembly 11 has a first connecting portion 1111 , and the connecting sleeve 112 has a first stopper bump 1121 . The first stopper protrusion 1121 protrudes from the inner wall surface 1120B of the connection sleeve 112 , and the first stopper protrusion 1121 defines a first sleeve section S1 and a second sleeve section S2 in the connection sleeve 112 . In this embodiment, the first sleeve section S1 of the connecting sleeve 112 is sleeved on the first connecting portion 1111 of the suction nozzle 111 , and the second sleeve section S2 of the connecting sleeve 112 is sleeved on the guide housing 10 On one side, the connecting sleeve 112 is connected between the suction nozzle 111 and the guide housing 10 , that is, the suction nozzle 111 is connected to the guide housing 10 through the connecting sleeve 112 .

As shown in Figures 1 to 7, the suction nozzle 111 of this embodiment further has a protruding portion 1112. The protruding portion 1112 of the suction nozzle 111 is disposed on the first connecting portion 1111 . Specifically, the protruding portion 1112 protrudes from the surface of the first connecting portion 1111 , and the protruding portion 1112 surrounds the first connecting portion 1111 .

As shown in FIGS. 1 to 7 , the connecting sleeve 112 of this embodiment further has a groove portion 1122 . The groove portion 1122 of the connecting sleeve 112 is recessed from the inner wall surface 1120B and is located in the first sleeve section S1, and the groove portion 1122 is surrounding the inner wall surface 1120B.

In this embodiment, the groove portion 1122 of the connecting sleeve 112 and the protruding portion 1112 of the suction nozzle 111 match each other. When the first sleeve section S1 of the connecting sleeve 112 is sleeved on the first connecting portion of the suction nozzle 111 1111, the protruding portion 1112 of the suction nozzle 111 will engage with the groove portion 1122 of the connecting sleeve 112, that is, the protruding portion 1112 of the suction nozzle 111 is located in the groove portion 1122 of the connecting sleeve 112.

As shown in FIGS. 1 to 7 , the guide housing 10 of this embodiment has an engaging groove 101 , and the connecting sleeve 112 further has at least one protrusion 1123 . The engaging groove 101 is recessed from the outer surface 100A of the guide housing 10 , and the engaging groove 101 is circumferentially provided on the outer surface 100A of the guide housing 10 . The bumps 1123 protrude from the inner wall surface 1120B of the connecting sleeve 112, and the bumps 1123 are located in the second sleeve section S2 of the connecting sleeve 112. In this embodiment, the number of the bumps 1123 is, for example, two. The two bumps 1123 are located at opposite positions to each other, but the invention does not limit the number of the bumps 1123. The number of the bumps 1123 can be increased according to actual needs.

In this embodiment, the engaging groove 101 of the guide housing 10 and the bumps 1123 of the connecting sleeve 112 match each other. When the second sleeve section S2 of the connecting sleeve 112 is sleeved on the guide shell 10 On one side, the bumps 1123 of the connecting sleeve 112 will engage with the engaging groove 101 of the guide housing 10 , that is, the bumps 1123 of the connecting sleeve 112 are located in the engaging groove of the guide housing 10 Within 101.

As can be seen from the above, the dry powder inhalation device 1 of this embodiment is connected between the suction nozzle 111 and the guide housing 10 through the connecting sleeve 112. When the protruding portion 1112 of the suction nozzle 111 and the groove portion of the connecting sleeve 112 After 1122 are engaged with each other, unless destroyed by a great external force, the external force exerted under normal use conditions cannot disassemble the suction nozzle 111 and the connecting sleeve 112 and separate them from each other. Similarly, when the connecting sleeve After these bumps 1123 of 112 and the engaging grooves 101 of the guide housing 10 are engaged with each other, the connecting sleeve 112 and the guide housing 10 cannot be disassembled and separated by the external force exerted under normal use conditions. to each other. That is to say, through the design of the above structure, the dry powder inhalation device 1 of this embodiment cannot be used again after replacing the nozzle 111 or the connecting sleeve 112, which conforms to the principle of disposable use and discarding, and avoids the risk of repeated use. The problem of drug contamination.

It is worth mentioning that before the dry powder inhalation device 1 is used, the above-mentioned nozzle 111 can respond to the fine particle ratio (Fine Particle Fraction, FPF) requirements of different pharmaceutical powder formulas or the special needs of the user (patient) ( (such as infants and young children) and replace it with a different type or size of nozzle.

As shown in Figures 1 to 7, the connecting sleeve 112 of this embodiment further has an anti-slip structure 1124. The anti-slip structure 1124 is disposed on the outer wall surface 1120A of the connecting sleeve 112 . In this embodiment, the anti-slip structure 1124 is, for example, a plurality of arcuate ridges arranged at intervals, and these arcuate ridges are located on opposite sides of the outer wall surface 1120A of the connecting sleeve 112 . The function of the anti-slip structure 1124 is to provide the user (patient) with appropriate frictional resistance so that the device is not easily slipped from the user's hand during use.

As shown in FIGS. 1 to 7 , the guide housing 10 of this embodiment further has a second stopper protrusion 102 . The second stopper protrusion 102 protrudes from the inner surface 100B of the guide housing 10 , and the second stopper protrusion 102 and the first stopper protrusion 1121 of the connection sleeve 112 correspond to each other. In this embodiment, the second stopper bump 102 defines a first accommodating section C1 and a second accommodating section C2 in the guide housing 10 , and the first accommodating section C1 is far away from the suction nozzle assembly 11 , the second accommodating section C2 is close to the suction nozzle assembly 11. Specifically, the second accommodating section C2 is located between the suction nozzle 111 of the suction nozzle assembly 11 and the first accommodating section C1.

In this embodiment, the above-mentioned accommodation cavity 12 is located in the first accommodation section C1 of the guide housing 10 . Specifically, the second stopper protrusion 102 of the guide housing 10 has a rib 1020, and the outer surface of the accommodation cavity 12 has a recess 120. The recess 120 of the accommodating cavity 12 and the rib 1020 of the second stopper convex block 102 engage with each other, so that the accommodating cavity 12 is fixed in the first accommodating section C1 of the guide housing 10 .

As shown in Figures 1 to 7, the dry powder inhalation device 1 of this embodiment further includes a screen structure 15. The screen structure 15 includes a grid portion 151 and a second connecting portion 152 . The second connecting portion 152 of the screen structure 15 is located in the second receiving section C2 of the guide housing 10 . That is to say, the screen structure 15 is inserted into the second connecting portion 152 of the guide housing 10 . 2. Within the accommodation section C2. The grid portion 151 of the screen structure 15 is located between the first stopper bump 1121 and the second connecting portion 152 of the connecting sleeve 112 , and the second connecting portion 152 is located between the grid portion 151 and the guide housing 10 . Between the two stop bumps 102, that is to say, the first stop bump 1121 of the connecting sleeve 112 and the second stop bump 102 of the guide housing 10 will simultaneously limit the screen structure 15. Bit.

It should be noted that, as shown in FIG. 5 , the grid portion 151 of the screen structure 15 of this embodiment has a plurality of holes H. In this embodiment, the diameter of each hole H in the grid portion 151 is smaller than the diameter of the lancet 131 of the lancet assembly 13 . The diameter of the hole H of the mesh part 151 is smaller than the diameter of the lancet 131 of the lancet assembly 13. The purpose is to prevent the fragments generated after the capsule or other container C covering the dry powder is punctured by the lancet 131 from entering the suction nozzle. 111 inside, but the holes H of the grid part 151 can allow the released medicinal powder to pass through and enter the human oral cavity and lungs through the suction nozzle 111.

As shown in FIGS. 6 and 7 , the guide housing 10 of this embodiment further has a first guide groove 103 and a second guide groove 104 . The first guide groove 103 and the second guide groove 104 are respectively recessed from the outer surface 100A of the guide housing 10, and the first guide groove 103 extends toward the first axial direction A1, and the second guide groove 104 extends toward the second axial direction A2. Extend and communicate with the first guide groove 103 and the engaging groove 101 respectively, and the first axial direction A1 and the second axial direction A2 are not parallel to each other. In this embodiment, the first axial direction A1 and the second axial direction A2 are perpendicular to each other, that is to say, the first guide groove 103 is a transverse guide groove. The second guide groove 104 is a straight guide groove, but the invention is not limited to this.

As shown in FIGS. 6 to 7 , the sliding sleeve 14 of this embodiment has a sliding block 141 . The sliding block 141 protrudes from the inner surface 140B of the sliding sleeve 14 , and the sliding block 141 matches the first guide groove 103 and the second guide groove 104 of the guide housing 10 . During the movement of the sliding sleeve 14 relative to the guide housing 10 , the sliding sleeve 14 simultaneously drives the sliding block 141 to move sequentially in the first guide groove 103 and the second guide groove 104 . Specifically, when the sliding sleeve 14 drives the sliding block 141 to move in the first guide groove 103, the sliding sleeve 14 will rotate relative to the guide housing 10; when the sliding sleeve 14 drives the sliding block 141 to move in the second guide groove 104. When moving, the sliding sleeve 14 will move toward the suction nozzle assembly 11 relative to the guide housing 10 .

From the above, it can be seen that when the user pushes the sliding sleeve 14, the sliding sleeve 14 does not immediately move along the second guide groove 104 in the direction closer to the nozzle assembly 11, but first moves along the transverse first guide groove. 103 rotates relative to the guide housing 10. The purpose of this structural design is to prevent the user from accidentally touching the sliding sleeve 14, causing the sliding sleeve 14 to directly drive the needle 131 to pierce the capsule or other container C covering the dry powder, causing Waste of medicines. In addition, the structural design of the sliding block 141 of the sliding sleeve 14 and the first guide groove 103 and the second guide groove 104 of the guide housing 10 matching each other can also ensure that the sliding sleeve 14 will not be skewed during the movement, thereby making The puncture needle 131 can accurately puncture the capsule or other container C covering the dry powder located in the accommodation cavity 12 .

As shown in Figures 1 to 7, the sliding sleeve 14 of this embodiment further has an anti-slip structure 142. The anti-slip structure 142 is disposed on the outer surface 140A of the sliding sleeve 14 . In this embodiment, the anti-skid structure 142 is, for example, a plurality of arcuate convex strips arranged at intervals, and these arcuate convex strips are located on opposite sides of the outer surface 140A of the sliding sleeve 14 . The function of the anti-slip structure 142 is to provide the user (patient) with appropriate frictional resistance, making it easier for the user to push the sliding sleeve 14 .

As shown in Figures 1 to 7, the dry powder inhalation device 1 of this embodiment further includes a coil spring 16. The coil spring 16 is arranged between the second accommodating portion 122 of the accommodating cavity 12 and the base 132 of the lancet assembly 13 . When the base 132 of the lancet assembly 13 drives the lancet 131 to move from the first accommodating part 121 to the second accommodating part 122 of the accommodating cavity 12, the coil spring 16 will be compressed between the base 132 and the second accommodating part 122. and produce elastic restoring force. When the external force exerted on the sliding sleeve 14 is released, the base 132 is pushed by the elastic restoring force generated by the coil spring 16 , so that the base 132 moves in a direction away from the nozzle assembly 11 , and moves on the base 132 During the movement, the sliding sleeve 14 is simultaneously driven to move in a direction away from the suction nozzle assembly 11 , thereby moving the sliding sleeve 14 to its original unused position.

As shown in FIGS. 1 to 7 , the guide housing 10 of this embodiment further has a recessed portion 105 , and the lancet assembly 13 further includes a protruding portion 133 . The recess 105 is recessed from the end edge of the guide housing 10 . The protruding portion 133 extends from the base 132 and corresponds to the recessed portion 105 . When the base 132 of the lancet assembly 13 drives the lancet 131 to move from the first accommodating part 121 to the second accommodating part 122 of the accommodating cavity 12, the base 132 will simultaneously drive the protruding part 133 to engage with the guide housing. 10 inside the recessed part 105, and when the protruding part 133 and the recessed part 105 engage with each other, a sound (such as a clicking sound) is made. The purpose of this structural design is to push the lancet 131 from the first accommodating part 121 of the accommodating cavity 12 to the second accommodating part 122 and pierce the capsule or other container covered with dry powder located in the second accommodating part 122 At this time, the protruding portion 133 of the base 132 and the recessed portion 105 of the guide housing 10 engage with each other to make a sound and feel at the same time, letting the user know that the movement of the sliding sleeve 14 relative to the guide housing 10 has reached the end of the movement. And the lancet 131 of the lancet assembly 13 has actually punctured the capsule or other container covering the dry powder.

It should be noted that since the outer edge of the above-mentioned protruding part 133 is arc-shaped, after the protruding part 133 and the recessed part 105 are engaged, the protruding part 133 and the recessed part 105 can still be generated by the coil spring 16 The elastic restoring force separates from each other, so that the lancet assembly 13 and the sliding sleeve 14 can be reset smoothly. Specifically, when the external force exerted on the sliding sleeve 14 is released, the base 132 is pushed by the elastic restoring force generated by the coil spring 16, so that the base 132 moves in a direction away from the suction nozzle assembly 11, and During the movement of the base 132 , the protruding portion 133 is simultaneously driven to move in a direction away from the suction nozzle assembly 11 , so that the recessed portions 105 are separated from each other along the arc-shaped outer edge of the protruding portion 133 .

As shown in Figures 1 to 7, the lancet assembly 13 of this embodiment further includes a plurality of air inlet holes 134. These air inlet holes 134 are arranged at the bottom of the base 132 . These air inlet holes 134 help the airflow enter the accommodation cavity 12 and allow the user to more smoothly inhale the dry powder in the container C covered with dry powder into the human mouth and lungs.

It is worth mentioning that after the dry powder inhalation device 1 of this embodiment is assembled, a tearable shrink film (not shown) can be used to fix it between the guide housing 10 and the sliding sleeve 14, that is, the The tearable shrink film is disposed on the outer surface 100a of the guide housing 10 and the outer surface 140a of the sliding sleeve 14. Since the tearable shrink film has a certain thickness, the sliding sleeve 14 can be stuck, so that the sliding sleeve 14 is not easy to move relative to the guide housing 10 to prevent the user from accidentally touching it. In addition, the tearable shrink film can simultaneously seal the air inlets 134 at the bottom of the base 132 of the lancet assembly 13 to prevent external dust from entering. to the inside of the dry powder inhalation device 1. Before the dry powder inhalation device 1 is used, the tearable shrink film must be torn open so that the sliding sleeve 14 can move smoothly relative to the guide housing 10 , thereby driving the lancet 131 of the lancet assembly 13 to move out of the accommodation cavity 12 The first containing part 121 moves into the second containing part 122 and pierces the container C covering the dry powder, so that the dry powder is released from the container C covering the dry powder, and is released after the tearable shrink film is torn open. The airflow can enter the accommodation cavity 12 through these air inlet holes 134, allowing the user to smoothly inhale dry powder (such as medicinal powder) into the mouth and lungs.

In summary, through the above structural design, the dry powder inhalation device of this creative embodiment has a simple structure and is disposable and can avoid repeated use. In addition, through the above structural design, the dry powder inhalation device of this creative embodiment can The device can reliably pierce capsules or other containers covered with dry powder, so that the dry powder, such as medicinal powder, in the capsule or other containers coated with dry powder can be fully inhaled by the patient, thereby increasing the dose of the inhaled medicinal powder.

The embodiments were chosen and described in order to explain the contents of the present disclosure and their practical applications to thereby inspire others skilled in the art to utilize the disclosure and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will be apparent to those skilled in the art to which this disclosure belongs without departing from the spirit and scope of this disclosure. Therefore, the scope of the present disclosure is determined based on the appended patent application scope, rather than being limited by the foregoing specification and the exemplary embodiments described therein.

1: Dry powder inhalation device 10: Guide shell 11:Nozzle assembly 12: Accommodation cavity 13:Lancet assembly 14:Sliding sleeve 15: Screen structure 16: Coil spring 100A: Outside surface 100B:Inside surface 101:Latching slot 102: Second stopper bump 103:First guide groove 104:Second guide groove 105: Depression 111:Suction nozzle 112:Connecting sleeve 120: concave part 121:First Accommodation Department 122:Second Accommodation Department 131:thorn needle 132:Pedestal 133:Protruding part 134:Air intake hole 140A:Outer surface 140B:Inner surface 141:Slider 151:Grid Department 152: Second connection part 1020:Protruding ribs 1111: First connection part 1112:Protrusion 1120A: Outer wall surface 1120B: Inner wall surface 1121: First stop bump 1122: Groove part 1123: Bump 1124, 142: Anti-slip structure A1: first axis A2: Second axis C: Container covering dry powder C1: First accommodation section C2: Second accommodation section H: hole S1: The first set section S2: The second set section X: long axis Y: short axis

The drawings illustrate one or more embodiments of the disclosure and, together with the written description, serve to explain principles of the disclosure. Wherever possible, the same drawing numbers will be used throughout the drawings to refer to similar or identical elements of the embodiments, where: Figure 1 is a schematic diagram of the appearance and structure of a dry powder inhalation device according to an embodiment of the present invention. Figure 2 is an exploded schematic diagram of the dry powder inhalation device shown in Figure 1 . Figure 3 is a schematic cross-sectional view along line AA of the dry powder inhalation device shown in Figure 1 . Figure 4 is a partially enlarged schematic diagram of area Z shown in Figure 3 . Figure 5 is a schematic diagram of the appearance of the screen structure shown in Figure 2. Figure 6 is a schematic diagram of the connection relationship between the guide housing and the sliding sleeve shown in Figure 2. Figure 7 is a schematic cross-sectional view of the guide housing and sliding sleeve shown in Figure 6 after assembly.

1: Dry powder inhalation device

10: Guide shell

11:Nozzle assembly

12: Accommodation cavity

13:Lancet assembly

14:Sliding sleeve

15: Screen structure

16: Coil spring

100A: Outside surface

101:Latching slot

103:First guide groove

104:Second guide groove

105: Depression

111:Suction nozzle

112:Connecting sleeve

121:First Accommodation Department

122:Second Accommodation Department

131:thorn needle

132:Pedestal

133:Protruding part

140A:Outer surface

151:Grid Department

152: Second connection part

1111: First connection part

1112:Protrusion

1120A: Outer wall surface

1124, 142: Anti-slip structure

Claims (17)

A dry powder inhalation device comprising: a guide housing; A suction nozzle assembly is arranged on one side of the guide housing; An accommodating cavity is configured in the guide housing, and the accommodating cavity includes a first accommodating part and a second accommodating part; A lancet assembly includes a lancet and a base, the lancet is connected to the base, and part of the lancet is located in the first accommodation part of the accommodation cavity; and a sliding sleeve, disposed on the opposite side of the guide housing and connected to the base of the lancet assembly, and the sliding sleeve is movable relative to the guide housing; When the sliding sleeve moves relative to the guide housing and moves toward the suction nozzle assembly, the sliding sleeve simultaneously drives the base to move toward the suction nozzle assembly, and when the base moves In the process, the lancet is driven to move from the first accommodating part to the second accommodating part. The dry powder inhalation device as claimed in claim 1, wherein the suction nozzle assembly includes a suction nozzle and a connecting sleeve, the suction nozzle has a first connecting part, the connecting sleeve has a first stopper bump, the The first stop protrusion protrudes from the inner wall surface of the connecting sleeve and defines a first sleeve section and a second sleeve section in the connecting sleeve. The first sleeve section is sleeved on the connecting sleeve. The first connection part of the suction nozzle and the second sleeve section are sleeved on one side of the guide housing. The dry powder inhalation device as claimed in claim 2, wherein the suction nozzle has a protruding part, the protruding part is arranged on the first connecting part, and the connecting sleeve has a groove part, and the groove part is from The inner wall surface of the connecting sleeve is concave and located in the first sleeve section. When the first sleeve section is sleeved on the first connecting part of the suction nozzle, the protruding part of the suction nozzle is stuck fit into the groove of the connecting sleeve. The dry powder inhalation device according to claim 2, wherein the guide housing has an engaging groove, the connecting sleeve further has at least one protrusion, and the engaging groove is recessed from the outer surface of the guide housing, The at least one protrusion protrudes from the inner wall surface of the connecting sleeve and is located in the second sleeve section. When the second sleeve section is sleeved on one side of the guide housing, the connecting sleeve The at least one protrusion is engaged in the engaging groove of the guide housing. The dry powder inhalation device as claimed in claim 2, wherein the connecting sleeve further has an anti-slip structure, and the anti-slip structure is disposed on the outer wall surface of the connecting sleeve. The dry powder inhalation device as claimed in claim 2, wherein the suction nozzle can be replaced with another suction nozzle of a different type or size. The dry powder inhalation device according to claim 2, wherein the guide housing has a second stopper protrusion protruding from the inner surface of the guide housing and connected with the connecting sleeve The first stopper bumps correspond to each other, and the second stopper bump defines a first accommodation section and a second accommodation section in the guide housing, and the first accommodation area The second accommodating section is close to the suction nozzle assembly, and the accommodating cavity is located in the first accommodating section. The dry powder inhalation device according to claim 7, further comprising a screen structure, the screen structure including a grid part and a second connection part, the second connection part is located in the second volume of the guide housing. is placed in the section, and the grid portion is located between the first stopper bump of the connecting sleeve and the second connecting portion, and the second connecting portion is located between the grid portion and the guide housing. between the second stop bumps. The dry powder inhalation device as claimed in claim 8, wherein the grid portion has a plurality of holes, and the diameter of each hole is smaller than the diameter of the lancet of the lancet assembly. The dry powder inhalation device according to claim 1, wherein the guide housing has a first guide groove and a second guide groove, and the first guide groove and the second guide groove are respectively opened from the outside of the guide housing. The surface is concave, the first guide groove extends in a first axial direction, the second guide groove extends in a second axial direction and is connected to the first guide groove, the first axial direction and the second axial direction mutually Not parallel. The dry powder inhalation device as claimed in claim 10, wherein the sliding sleeve has a sliding block protruding from the inner surface of the sliding sleeve, and during the movement of the sliding sleeve relative to the guide housing, the sliding sleeve The sleeve drives the slide block to move in the first guide groove and the second guide groove in sequence. When the slide block moves in the first guide groove, the slide sleeve rotates relative to the guide housing. When the block moves in the second guide groove, the sliding sleeve moves relative to the guide housing in a direction close to the suction nozzle assembly. The dry powder inhalation device as claimed in claim 1, wherein the sliding sleeve has an anti-skid structure, and the anti-skid structure is arranged on the outer surface of the sliding sleeve. The dry powder inhalation device according to claim 1, further comprising a coil spring disposed between the second accommodating portion of the accommodating cavity and the base of the lancet assembly. The dry powder inhalation device of claim 13, wherein the guide housing further has a recess, and the lancet assembly further includes a protrusion extending from the base and corresponding to the recess. , when the base drives the lancet to move from the first accommodating part to the second accommodating part, the protruding part engages in the recessed part and makes a sound. When an external force is applied to the sliding sleeve After being released, the elastic restoring force generated by the coil spring pushes the base to move in a direction away from the suction nozzle assembly, and during the movement of the base, the protrusion is driven away from the suction nozzle assembly. direction and escape from the recess. The dry powder inhalation device as claimed in claim 14, wherein the outer edge of the protrusion is arc-shaped. The dry powder inhalation device as claimed in claim 1, wherein the second accommodation portion of the accommodation cavity is used to accommodate a container covered with dry powder, the container coated with dry powder is used to coat a dry powder, and the The container coated with dry powder has a long axis and a short axis perpendicular to each other, and the length of the needle is greater than the length of the long axis. The dry powder inhalation device according to claim 1 further includes a tearable shrink film, the tearable shrink film is arranged on the outer surface of the guide housing and the outer surface of the sliding sleeve.

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