Puncture needle for dry powder inhalation capsule

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a puncture needle for a dry powder inhalation capsule, which comprises an inhaler body, a suction nozzle in threaded connection with the top end of the inhaler body, and a medicine placing groove arranged in the inhaler body right below the suction nozzle, so that when the dry powder inhalation capsule is used, the suction nozzle can be opened to place the dry powder inhalation capsule in the medicine placing groove; then the suction nozzle is closed, then the two pressing blocks are pressed close to each other, the puncture needle penetrates through aseptic cotton in the lantern ring to be disinfected and then pierces into the capsule in the medicine containing groove from the puncture opening, so that the capsule is punctured, stress points can be increased for the puncture needle through supporting of the lantern ring, and the situation that the capsule cannot be punctured accurately due to shaking in the moving process is avoided; after puncturing, the pressing block is loosened, so that the puncture needle is automatically retracted into the aseptic cotton for disinfection through the first compression spring, and the effects that the puncture needle has enough force to penetrate through the dry powder inhalation capsule and automatic disinfection can be achieved after puncturing each time are effectively achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a puncture needle for a powder aerosol capsule. Background Art

[0002] Respiratory diseases are common diseases. With the deterioration of air quality, the incidence of respiratory diseases is increasing, especially chronic respiratory diseases, which will bring great pain to patients. At present, the main and most effective ways to treat chronic respiratory diseases in hospitals are metered-dose inhalers, dry powder inhalers, nebulizers, etc. Dry powder inhalers, also called powder aerosols, are generally administered using inhalers.

[0003] Patent No. CN210205530 proposes a needle and its drug delivery device for puncturing and inhaling a powder aerosol capsule. The needle includes a needle tip, and the needle tip includes at least one main inclined plane and tip inclined planes arranged on both sides of the main inclined plane. Among them, the main inclined plane is prepared on the needle tip at a first plane angle, the tip inclined plane is prepared on the needle tip at a second plane angle, and the included angle between the main inclined plane and the central axis of the needle tip is a first rotation angle, and the included angle between the tip inclined plane and the central axis of the needle tip is a second rotation angle. The two tip inclined planes intersect at the outermost end of the needle tip. Its advantages are that the needle tip of the needle with the main inclined plane and the tip inclined plane is sharper, and at the same time, since the contact surface between the needle tip and the capsule is smaller than that of the existing wedge-shaped needle or pencil-shaped needle, and the cutting edge is longer, the capsule is gradually cut along the tip inclined plane and the main inclined plane, and a relatively regular puncture hole with a larger area can be gradually formed.

[0004] The puncture needle in the existing powder aerosol capsule inhaler is prone to uneven or insufficient penetration of the capsule due to unstable puncture force.

[0005] Therefore, this application provides a puncture needle for a powder aerosol capsule to meet the demand. Content of the Utility Model

[0006] To solve the above problems existing in the prior art, the utility model provides a puncture needle for a powder aerosol capsule, which has the characteristics of accurate penetration.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A puncture needle for a powder aerosol capsule, comprising an inhaler body, a mouthpiece is threadedly connected to the top of the inhaler body, a medicine placement groove is installed inside the inhaler body directly below the mouthpiece, puncture openings are symmetrically drilled on the side wall of the medicine placement groove, sliding grooves corresponding to the puncture openings are symmetrically drilled on the side wall of the inhaler body, a pressing block is slidably connected inside the sliding groove, a puncture needle is detachably connected to one end of the pressing block close to the medicine placement groove, a collar is sleeved on the puncture needle, and the collar is fixedly connected to the inner top wall of the inhaler body through a connecting rod, a disinfected cotton is detachably connected to the inner wall of the collar, and the disinfected cotton is sleeved on the surface of the puncture needle. A first compression spring is sleeved on the surface of the puncture needle between the collar and the pressing block, and both ends of the first compression spring are fixedly connected to the collar and the pressing block respectively.

[0008] As a preferred technical solution of the puncture needle for a powder aerosol capsule of the present utility model, a plug is embedded and installed in the collar, and the plug abuts against the disinfected cotton. A rubber ring is fixedly connected to the outer wall of the plug, and the rubber ring abuts against the inner wall of the collar.

[0009] As a preferred technical solution of the puncture needle for a powder aerosol capsule of the present utility model, the inner diameter of one end of the collar close to the pressing block is larger than the inner diameter of the disinfected cotton, and the inner diameter of one end close to the plug is larger than the outer diameter of the disinfected cotton.

[0010] As a preferred technical solution of the puncture needle for a powder aerosol capsule of the present utility model, a threaded groove is fixedly connected to one end of the pressing block close to the medicine placement groove, a threaded shaft is fixedly connected to one end of the puncture needle close to the threaded groove, and the threaded shaft is threadedly connected to the threaded groove.

[0011] As a preferred technical solution of the puncture needle for a powder aerosol capsule of the present utility model, a second compression spring is fixedly connected to the bottom end of the medicine placement groove, a support groove is fixedly connected to the top end of the second compression spring, and a powder aerosol capsule is placed in the support groove.

[0012] As a preferred technical solution of the puncture needle for a powder aerosol capsule of the present utility model, the support groove is in a horizontal position with the bottom of the puncture opening in the normal state of the second compression spring.

[0013] As a preferred technical solution of the puncture needle for a powder aerosol capsule of the present utility model, a pressing plate is fixedly connected to the bottom end of the mouthpiece through a connecting shaft, and the pressing plate is engaged with the medicine placement groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. When using the powder aerosol capsule, the nozzle can be opened and placed in the medicine slot, and then the nozzle is closed. At this time, the two pressing blocks are pressed close to each other, so that the puncture needle passes through the disinfected cotton in the collar for disinfection and then penetrates into the capsule in the medicine slot from the puncture port, thus puncturing the capsule. With the support of the collar, the puncture needle can be provided with a force application point to avoid shaking during movement and being unable to accurately pierce the capsule. After puncture, the pressing block is released, so that the puncture needle automatically retracts into the disinfected cotton for disinfection through the first compression spring, effectively achieving the effect that the puncture needle has sufficient force to penetrate the powder aerosol capsule and can be automatically disinfected after each puncture.

[0016] 2. After the puncture needle is used multiple times, the disinfected cotton will also be contaminated and the disinfection strength will be insufficient. At this time, the plug can be taken out of the collar to replace the disinfected cotton. After placing the new disinfected cotton in the collar and clamping it, the plug is inserted into the collar and abuts against the disinfected cotton, and the rubber ring is used to increase the resistance to avoid the effect of falling off.

[0017] 3. When puncturing powder aerosol capsules made of different specifications of materials, a matching puncture needle can be selected and fixed by screwing the threaded shaft and the threaded groove. Then the capsule is placed in the medicine slot, and its bottom abuts against the support groove. Subsequently, the nozzle is closed, so that the pressing plate at the bottom of the nozzle is clamped into the medicine slot to press the capsule, and the capsule is elastically adjusted through the support groove to be fixed. At this time, the puncture can be carried out through the puncture needle, effectively achieving the effect that the puncture needle and the medicine slot are applicable to powder aerosol capsules of different specifications. Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the internal structure of the inhaler of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the capsule puncture mechanism of the present invention;

[0021] Figure 3 is a schematic diagram of the installation structure of the disinfected cotton of the present invention;

[0022] Figure 4 is a schematic diagram of the installation structure of the puncture needle of the present invention.

[0023] In the figure: 1. Inhaler body; 2. Mouthpiece; 3. Pressing block; 4. Medicine placement groove; 5. Puncture opening; 6. First compression spring; 7. Collar; 8. Connecting rod; 9. Puncture needle; 10. Second compression spring; 11. Bracket; 12. Pressing plate; 13. Connecting shaft; 14. Disinfection cotton; 15. Plug; 16. Rubber ring; 17. Threaded groove; 18. Threaded shaft. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment 1

[0026] Please refer to Figure 1-2 , the present invention provides a puncture needle for a powder aerosol capsule, including an inhaler body 1. A mouthpiece 2 is threadedly connected to the top end of the inhaler body 1. A medicine placement groove 4 is installed in the inhaler body 1 directly below the mouthpiece 2. Puncture openings 5 are symmetrically drilled on the side wall of the medicine placement groove 4. Corresponding sliding grooves are symmetrically drilled on the side wall of the inhaler body 1 and are corresponding to the puncture openings 5. A pressing block 3 is slidably connected in the sliding groove. One end of the pressing block 3 close to the medicine placement groove 4 is detachably connected to a puncture needle 9. A collar 7 is sleeved on the puncture needle 9, and the collar 7 is fixedly connected to the inner top wall of the inhaler body 1 through a connecting rod 8. A disinfection cotton 14 is detachably connected to the inner wall of the collar 7, and the disinfection cotton 14 is sleeved on the surface of the puncture needle 9. A first compression spring 6 is sleeved on the surface of the puncture needle 9 between the collar 7 and the pressing block 3, and both ends of the first compression spring 6 are fixedly connected to the collar 7 and the pressing block 3 respectively.

[0027] This solution can achieve that when using a powder aerosol capsule, the mouthpiece 2 can be opened and the capsule can be placed in the medicine placement groove 4. Then the mouthpiece 2 is closed. At this time, the two pressing blocks 3 are pressed close to each other, so that the puncture needle 9 passes through the disinfection cotton 14 in the collar 7 for disinfection and then pierces the capsule in the medicine placement groove 4 through the puncture opening 5, thereby puncturing the capsule. Through the support of the collar 7, the force application point of the puncture needle 9 can be increased, avoiding shaking during the movement and being unable to accurately pierce the capsule. After puncturing, the pressing block 3 is released, so that the puncture needle 9 automatically retracts into the disinfection cotton 14 for disinfection through the first compression spring 6, effectively achieving the effect that the puncture needle 9 has sufficient force to penetrate the powder aerosol capsule and can be automatically disinfected after each puncture.

[0028] Embodiment 2

[0029] Please refer to Figure 3, a plug 15 is embedded and installed in the collar 7, and the plug 15 abuts against the disinfection cotton 14. A rubber ring 16 is fixedly connected to the outer wall of the plug 15, and the rubber ring 16 abuts against the inner wall of the collar 7. The inner diameter of the collar 7 near one end of the pressing block 3 is larger than the inner diameter of the disinfection cotton 14, and the inner diameter near one end of the plug 15 is larger than the outer diameter of the disinfection cotton 14. After the puncture needle 9 is used multiple times, the disinfection cotton 14 will also be contaminated and the disinfection strength will be insufficient. At this time, the plug 15 can be taken out of the collar 7 to replace the disinfection cotton 14. After placing the new disinfection cotton 14 in the collar 7 and snapping it, the plug 15 is inserted into the collar 7 to abut against the disinfection cotton 14, and the resistance is increased through the rubber ring 16 to avoid the effect of falling off.

[0030] Please refer to Figure 2 and Figure 4 , a threaded groove 17 is fixedly connected to one end of the pressing block 3 near the medicine placing groove 4. A threaded shaft 18 is fixedly connected to one end of the puncture needle 9 near the threaded groove 17, and the threaded shaft 18 is threadedly connected to the threaded groove 17. A second compression spring 10 is fixedly connected to the bottom end of the medicine placing groove 4. A support groove 11 is fixedly connected to the top end of the second compression spring 10, and a powder aerosol capsule is placed in the support groove 11. The support groove 11 is kept at the same horizontal position as the bottom of the puncture port 5 under the normal state of the second compression spring 10. The bottom end of the suction nozzle 2 is fixedly connected to a pressing plate 12 through a connecting shaft 13, and the pressing plate 12 is engaged with the medicine placing groove 4. When puncturing powder aerosol capsules of different specifications of materials, a puncture needle 9 that matches it can be selected, fixed by threading the threaded shaft 18 and the threaded groove 17, and then the capsule is placed in the medicine placing groove 4 so that its bottom abuts against the support groove 11. Subsequently, the suction nozzle 2 is closed, so that the pressing plate 12 at the bottom of the suction nozzle 2 is snapped into the medicine placing groove 4 to press the capsule, so that the capsule is elastically adjusted through the support groove 11 to be fixed. At this time, the puncture can be performed through the puncture needle 9, effectively achieving the effect that the puncture needle 9 and the medicine placing groove 4 are applicable to powder aerosol capsules of different specifications.

[0031] The working principle and usage process of the present utility model: In the process of using the present utility model, first, when using a powder aerosol capsule, the suction nozzle 2 can be opened and placed in the medicine placing groove 4, and then the suction nozzle 2 is closed. At this time, the two pressing blocks 3 are pressed against each other, so that the puncture needle 9 passes through the disinfection cotton 14 in the collar 7 for disinfection and then penetrates into the capsule in the medicine placing groove 4 from the puncture port 5, thereby puncturing the capsule. Through the support of the collar 7, the force application point of the puncture needle 9 can be increased to avoid shaking during the movement and being unable to accurately pierce the capsule. After puncturing, the pressing block 3 is released, so that the puncture needle 9 automatically retracts into the disinfection cotton 14 for disinfection through the first compression spring 6, effectively achieving the effect that the puncture needle 9 has sufficient force to penetrate the powder aerosol capsule and can be automatically disinfected after each puncture.

[0032] Then, after the puncture needle 9 is used many times, the disinfection cotton 14 will also be contaminated, and the disinfection strength is insufficient. At this time, the plug 15 can be taken out from the ring 7, and the disinfection cotton 14 can be replaced. After the new disinfection cotton 14 is placed in the ring 7 and engaged, the plug 15 is inserted into the ring 7 to contact with the disinfection cotton 14, and the rubber ring 16 is used to increase the resistance to avoid falling off.

[0033] Finally, when puncturing powder aerosol capsules of different specifications and materials, a matching puncture needle 9 can be selected and fixed by threading the threaded shaft 18 and the threaded groove 17, and then the capsule is placed in the medicine placement groove 4 so that its bottom contacts the bracket 11, and then the suction nozzle 2 is closed, so that the pressure plate 12 at the bottom of the suction nozzle 2 is inserted into the medicine placement groove 4 to press the capsule, so that the capsule is elastically adjusted by the bracket 11 and thus fixed. At this time, puncture can be performed by the puncture needle 9, effectively achieving the effect that the puncture needle 9 and the medicine placement groove 4 are suitable for powder aerosol capsules of different specifications.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A puncture needle for a powder aerosol capsule, comprising an inhaler body (1), characterized in that: At the top of the inhaler body (1), a mouthpiece (2) is threadedly connected. Inside the inhaler body (1) directly below the mouthpiece (2), a medicine placement groove (4) is installed. On the side wall of the medicine placement groove (4), puncture openings (5) are symmetrically drilled. On the side wall of the inhaler body (1), sliding grooves corresponding to the puncture openings (5) are symmetrically drilled. A pressing block (3) is slidably connected in the sliding grooves. One end of the pressing block (3) close to the medicine placement groove (4) is detachably connected to a puncture needle (9). A collar (7) is sleeved on the puncture needle (9), and the collar (7) is fixedly connected to the inner top wall of the inhaler body (1) through a connecting rod (8). A disinfected cotton (14) is detachably connected to the inner wall of the collar (7), and the disinfected cotton (14) is sleeved on the surface of the puncture needle (9). A first compression spring (6) is sleeved on the surface of the puncture needle (9) between the collar (7) and the pressing block (3), and both ends of the first compression spring (6) are fixedly connected to the collar (7) and the pressing block (3) respectively.

2. The puncture needle for a powder aerosol capsule according to claim 1, characterized in that: A plug (15) is embedded and installed in the collar (7), and the plug (15) abuts against the disinfected cotton (14). An outer wall of the plug (15) is fixedly connected with a rubber ring (16), and the rubber ring (16) abuts against the inner wall of the collar (7).

3. The puncture needle for a powder aerosol capsule according to claim 1, characterized in that: The inner diameter of one end of the collar (7) close to the pressing block (3) is larger than the inner diameter of the disinfected cotton (14), and the inner diameter of one end close to the plug (15) is larger than the outer diameter of the disinfected cotton (14).

4. A puncture needle for a powder aerosol capsule according to claim 1, characterized in that: One end of the pressing block (3) close to the medicine placement groove (4) is fixedly connected with a threaded groove (17). One end of the puncture needle (9) close to the threaded groove (17) is fixedly connected with a threaded shaft (18), and the threaded shaft (18) is threadedly connected with the threaded groove (17).

5. A puncture needle for a powder aerosol capsule according to claim 1, characterized in that: A second compression spring (10) is fixedly connected to the bottom end of the medicine placement groove (4). The top end of the second compression spring (10) is fixedly connected with a support groove (11), and a powder aerosol capsule is placed in the support groove (11).

6. The puncture needle for a powder aerosol capsule according to claim 5, characterized in that: The support groove (11) is at the same horizontal position as the bottom of the puncture opening (5) when the second compression spring (10) is in a normal state.

7. A puncture needle for a powder aerosol capsule according to claim 1, characterized in that: The bottom end of the mouthpiece (2) is fixedly connected with a pressing plate (12) through a connecting shaft (13), and the pressing plate (12) is engaged with the medicine placement groove (4).

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