Special needle for implantable drug delivery device

Abstract

The utility model relates to medical instrument technical field provides a kind of special needle of anti-needle stick injury type implantable drug delivery device, it include: needle body structure;Anti-needle structure;Limiting space is set in shell;Letting hole is provided on shell wall, the tip of needle tube can be extended outside shell through letting hole;Locking needle piece is movably arranged in limiting space, locking needle piece is provided with the limiting hole compatible with anti-escape flat position.The special needle, when needle is needed to be pulled out, needle handle can be pinched to pull out needle tube outward until needle tube is withdrawn to the inside of shell, at this time, anti-escape flat position is in abutment with the limiting hole on locking needle piece, under the action of limiting space, locking needle piece cannot continue to move, finally limit needle tube to pull out from the inside of shell, to avoid injuring person.At the same time, needle tube no longer abuts with bolt, elastic member releases after driving bolt movement, until the letting hole of bolt letting hole is mutually staggered, at this time, letting hole is blocked by bolt, needle tube cannot extend from letting hole, to avoid injuring person.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a special needle for an implantable drug delivery device that prevents needlestick injuries. Background Technology

[0002] Existing implantable drug delivery devices use needles that can easily prick medical staff during removal, increasing their risk of infection from pathogens carried by the needle. Furthermore, the needles pose a safety hazard when disposed of after removal. Therefore, there is a need to improve the structure of existing implantable needles to enhance their safety. Utility Model Content

[0003] Therefore, this utility model aims to solve the problems of existing implantable drug delivery device needles, which are prone to pricking medical staff when the needle is removed, making medical staff susceptible to infection by pathogens carried by the needle, and also pose certain safety hazards when the needle is discarded after being pulled out. Thus, this utility model provides a needle for implantable drug delivery devices that is puncture-proof.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: This utility model provides a special needle for an implantable drug delivery device designed to prevent needlestick injuries, comprising: a needle body structure including a connected needle tube and a needle handle, wherein the needle tube is provided with an anti-dislodgement flattening position; an anti-needlestick structure including a shell, a locking pin, a pin, and an elastic element; a limiting space is provided inside the shell; a clearance hole is provided on the shell wall, through which the tip of the needle tube can extend outside the shell; the locking pin is movably disposed within the limiting space, and the locking pin is provided with a limiting hole adapted to the anti-dislodgement flattening position; the locking pin is sleeved on the needle tube, and the anti-dislodgement flattening position is located on the locking pin near the tip of the needle tube. One side of the end; when the needle tube is retracted into the housing, the anti-dislodgement flat position abuts against the limiting hole on the locking pin to prevent the needle tube from being pulled out of the housing; the pin is movably disposed in the housing, and the pin is provided with a relief groove; the elastic element is disposed in the housing and adapted to the pin; when the needle tube extends out of the housing from the relief groove and relief hole, the tube wall of the needle tube squeezes the pin to compress the elastic element; when the needle tube is retracted into the housing, the elastic element releases and drives the pin to move to a position where the relief groove and the relief hole do not coincide.

[0005] Furthermore, the housing includes an upper shell and a lower shell, which are interlocked; the limiting space is disposed within the upper shell, and the pin and the elastic element are both disposed within the upper shell; the clearance hole is located on the lower shell.

[0006] Furthermore, the upper shell is provided with a placement area for accommodating the elastic element, and the side of the upper shell facing away from the lower shell is provided with an installation port. An installation buckle area is provided between the installation port and the placement area. The elastic element enters the upper shell through the installation port and is installed in the placement area. The installation buckle area is used to limit and protect the elastic element.

[0007] Furthermore, along the thickness direction of the upper shell, the placement area is positioned below the limiting space.

[0008] Furthermore, the side of the upper shell facing away from the lower shell is provided with a needle handle mounting platform and a needle handle locking position; the needle handle mounting platform is lower than the high point of the upper shell; the needle handle is laid flat on the needle handle mounting platform and is at least partially locked in the needle handle locking position.

[0009] Furthermore, the upper shell and the lower shell are connected by snaps, and both the upper shell and the lower shell are provided with vents.

[0010] Furthermore, the upper shell has an anti-misalignment groove on the side facing the lower shell, and the lower shell has an anti-misalignment protrusion on the side facing the upper shell. When the upper shell and the lower shell are fastened together, the anti-misalignment protrusion is inserted into the anti-misalignment groove.

[0011] Furthermore, the head end of the upper shell is provided with a puncture field of view.

[0012] Furthermore, the lower shell is a flexible lower shell.

[0013] Furthermore, the needle body also includes an extended tube, a connecting seat, a protective cap, a catheter clamp, and a needle tube protective sleeve; the extended tube is connected to the tail end of the needle tube, and the middle part of the extended tube is adapted to connect a drug delivery device or a multi-channel infusion connector; the connecting seat is connected to the end of the extended tube away from the needle tube; the protective cap is fitted onto the end of the connecting seat away from the extended tube; the catheter clamp is mounted on the extended tube; and the needle tube protective sleeve is fitted onto the tip of the needle tube.

[0014] The technical solution of this utility model has the following advantages: The needle for the implantable drug delivery device provided by this utility model is designed to prevent needle stick injuries. During use, when puncture is required, the needle handle can be pinched and the needle tip inserted into the drug delivery device. When needle removal is required, the needle handle can be pinched and the needle pulled outwards until it retracts into the housing. At this point, the anti-dislodgement flat part abuts against the limiting hole on the locking plate. Under the action of the limiting space, the locking plate cannot move further, ultimately preventing the needle from being pulled out of the housing to avoid injury. Simultaneously, the needle no longer abuts against the pin. After the elastic element is released, it drives the pin to move until the clearance groove and clearance hole of the pin are misaligned. At this point, the clearance hole is blocked by the pin, preventing the needle from extending out of the clearance hole to avoid injury. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the special needle for the needle-proof implantable drug delivery device in an embodiment of this utility model. Figure 2 This is a schematic diagram from one perspective when the needle for the needle-proof implantable drug delivery device in this embodiment of the present invention is not activated. Figure 3 This is a schematic diagram from another perspective when the needle for the needle-proof implantable drug delivery device in this embodiment of the present invention is not activated. Figure 4 This is a cross-sectional view of the needle of the anti-needle-puncture implantable drug delivery device in an embodiment of the present invention when it is not activated. Figure 5 This is a cross-sectional view of the needle used in the anti-needle-puncture implantable drug delivery device in an embodiment of the present invention during activation. Figure 6 This is a schematic diagram of the lower shell of the special needle for the needle-proof implantable drug delivery device in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Protective cap; 2. Connecting seat; 3. Conduit clamp; 4. Extended tube; 5. Needle handle; 501. Anti-slip zone; 6. Upper shell; 601. Needle handle placement platform; 602. Needle handle locking mechanism; 7. Locking pin plate; 701. Lower limit of the limiting space; 702. Upper limit of the limiting space; 8. Bolt; 9. Syringe; 901. Anti-dislodgement flattening device; 10. Syringe protective sleeve; 11. Lower shell; 1101. Anti-misalignment boss; 12. Elastic element; 13. Puncture field of view area; 14. Vent; 15. Auxiliary buckle; 16. Main buckle; 17. Inactive position; 18. Activated position; 19. Installation port; 20. Placement area; 21. Installation inverted buckle area; 22. Arc-shaped fastening force-bearing surface; 23. Relief hole. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and defined, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figures 1 to 6As shown, this embodiment provides a needle for a needle-resistant implantable drug delivery device, comprising: a needle body structure including a connected needle tube 9 and a needle handle 5. For example, the needle tube 9 can be a non-invasive needle tube 9. The needle handle 5 may include two identical wings, each with an ergonomically designed anti-slip area 501 on its bottom surface. The two wings have an arc-shaped locking area near their center, allowing them to fully fit against the center of the needle handle 5. For example, the needle handle 5 and needle tube 9 can be connected with a strong force, capable of withstanding pressure values ​​above 325 PSI. The connection method includes, but is not limited to, injection molding and adhesive bonding. In use, the two wings of the needle handle 5 can be pinched and brought together for easier needle insertion or removal.

[0023] The needle tube 9 is provided with an anti-dislodgement flattening position 901. For example, the anti-dislodgement flattening position 901 can be located near the small bend of the needle tube 9. The outer diameter of the anti-dislodgement flattening position 901 is larger than the outer diameter of the needle tube 9. Its specific shape, size and position can be designed as needed.

[0024] like Figure 3 As shown, the anti-needle puncture structure includes a shell, a locking pin 7, a pin 8, and an elastic element 12. A limiting space is provided within the shell; for example, the upper limiting space along the thickness direction of the shell can have a certain height, allowing the locking pin 7 to move up and down within a small range between the upper limit 702 and the lower limit 701 of the limiting space. A clearance hole 23 is provided on the shell wall; for example, the size of the clearance hole is larger than the maximum outer diameter of the needle tube 9, so that the tip of the needle tube 9 can extend out of the shell through the clearance hole 23. The locking pin 7 is movably disposed within the limiting space, and a limiting hole adapted to the anti-detachment flat position 901 is provided on the locking pin 7; for example, the diameter of the limiting hole is larger than the outer diameter of the needle tube 9 and smaller than the outer diameter of the anti-detachment flat position 901, allowing the needle tube 9 to pass through normally while also being limited by the anti-detachment flat position 901.

[0025] The locking pin 7 is sleeved on the needle tube 9, and the anti-dislodgement flat position 901 is located on the side of the locking pin 7 near the tip of the needle tube 9; when the needle tube 9 is retracted into the housing, the anti-dislodgement flat position 901 abuts against the limiting hole on the locking pin 7 to prevent the needle tube 9 from being pulled out of the housing.

[0026] The pin 8 is movably disposed within the housing and has a clearance groove. The elastic element 12 is disposed within the housing and adapted to the pin 8. When the needle tube 9 extends out of the housing from the clearance groove and clearance hole, the wall of the needle tube 9 presses against the pin 8, compressing the elastic element 12. When the needle tube 9 retracts into the housing, the elastic element 12 releases and drives the pin 8 to a position where the clearance groove and clearance hole do not coincide. For example, the clearance groove can be a U-shaped groove with its opening facing the needle tube 9.

[0027] The needle for the implantable drug delivery device provided in this embodiment is designed to prevent needle stick injuries. During use, when puncture is required, the needle handle 5 can be pinched and the tip of the needle tube 9 inserted into the drug delivery device. When needle removal is required, the needle handle 5 can be pinched and the needle tube 9 pulled outwards until it retracts into the housing. At this time, the anti-dislodgement flattening part 901 abuts against the limiting hole on the locking pin 7. Under the action of the limiting space, the locking pin 7 cannot move further, ultimately preventing the needle tube 9 from being pulled out of the housing to avoid injury. Simultaneously, the needle tube 9 no longer abuts against the pin 8. After the elastic element 12 is released, it drives the pin 8 to move until the clearance groove and clearance hole of the pin 8 are misaligned. At this time, the clearance hole is blocked by the pin 8, preventing the needle tube 9 from extending out of the clearance hole to avoid injury.

[0028] like Figure 6 As shown, the housing includes an upper shell 6 and a lower shell 11, which are interlocked. For example, the upper shell 6 and lower shell 11 can be connected by snap-fit, ultrasonic welding, or adhesive. For instance, when the upper shell 6 and lower shell 11 are connected by snap-fit, both the upper shell 6 and lower shell 11 can be provided with main snap-fit ​​16 and auxiliary snap-fit ​​15 for installation. The main snap-fit ​​16 and auxiliary snap-fit ​​15 can be a combination of protruding and recessed structures. For example, the main snap-fit ​​16 on the upper shell 6 can be a recessed structure, while the main snap-fit ​​16 on the lower shell 11 can be a protruding structure. Similarly, the auxiliary snap-fit ​​15 on the upper shell 6 can be a recessed structure, while the auxiliary snap-fit ​​15 on the lower shell 11 can be a protruding structure.

[0029] Both the upper shell 6 and the lower shell 11 may be provided with vents 14, for example, the vents 14 may be circular through holes.

[0030] The limiting space is located within the upper shell 6. For example, the limiting space can be located near the front end of the upper shell 6. For example, the locking pin piece 7 can be a thin metal piece with a T-shaped structure that can be hooked onto the upper shell 6. Its specific shape can be adapted to the vertical projection shape of the movable limiting area of ​​the locking pin piece 7 within the limiting space of the upper shell 6.

[0031] The clearance hole is located on the lower shell 11 and is connected to the limiting space, so that the needle tube 9 can pass through the upper shell 6 and the lower shell 11 from top to bottom.

[0032] like Figure 4 As shown, both the pin 8 and the elastic element 12 are disposed within the upper shell 6. Specifically, for example, the upper shell 6 has a placement area 20 for accommodating the elastic element 12, and a mounting opening 19 is provided on the side of the upper shell 6 facing away from the lower shell 11. A mounting buckle area 21 is provided between the mounting opening 19 and the placement area 20. The elastic element 12 enters the upper shell 6 through the mounting opening 19 and is installed in the placement area 20. The mounting buckle area 21 is used to limit and protect the elastic element 12. For example, the elastic element 12 can be a coil spring. For example, the mounting opening 19 can be located near the tail end of the upper shell 6. For example, the lower shell 11 may be provided with a cavity to accommodate the pin 8. One end of the elastic element 12 abuts against the pin 8, and the other end abuts against the inner wall of the mounting area. In the cavity of the lower shell 11, when the pin 8 is in the inactive position 17, the clearance groove and the clearance hole are aligned, and the needle tube 9 extends out from the clearance hole of the lower shell 11. After the pin 8 is activated, the pin 8 moves to the activated position 18 in the cavity. At this time, the clearance groove and the clearance hole no longer overlap, and the clearance hole is blocked.

[0033] Wherein, along the thickness direction of the upper shell 6, the position of the placement area 20 is lower than the limiting space.

[0034] like Figure 2 As shown, the upper shell 6 has a needle handle mounting platform 601 and a needle handle locking position 602 on the side facing away from the lower shell 11; the needle handle 5 mounting platform is lower than the highest point of the upper shell 6; the needle handle 5 lies flat on the needle handle 5 mounting platform and is at least partially locked in the needle handle locking position 602. For example, two parallel and spaced-apart locking plates can be provided on the upper shell 6, and the space between the two locking plates forms the needle handle locking position 602. For example, an arc-shaped fastening force-bearing surface 22 can be provided at the contact point between the locking plate and the needle handle 5 to facilitate the locking plate clamping the needle handle 5. With this arrangement, the mounting position of the needle handle 5 is not higher than the upper shell 6 and partially overlaps with the movable area of ​​the locking pin 7 within the limiting space, thereby reducing the overall thickness of the anti-needle puncture structure.

[0035] The upper shell 6 has an anti-misalignment groove on the side facing the lower shell 11, and the lower shell 11 has an anti-misalignment protrusion 1101 on the side facing the upper shell 6. When the upper shell 6 and the lower shell 11 are fastened together, the anti-misalignment protrusion 1101 is inserted into the anti-misalignment groove. For example, the anti-misalignment groove and the anti-misalignment protrusion 1101 can be irregular shapes to prevent misalignment of the upper shell 6 and the lower shell 11 during installation.

[0036] like Figure 5 As shown, the head end of the upper shell 6 has a reserved puncture field of view 13. For example, the head end face of the upper shell 6 can be designed as an open opening, from which the needle tube 9 can be seen.

[0037] The lower shell 11 is flexible. For example, the lower shell 11 can be made entirely of flexible material, or it can be made of rigid material with flexible material pasted on the side facing away from the upper shell 6, or it can be made of flexible material with flexible material pasted on the side facing away from the upper shell 6. The purpose is to make the area of ​​the lower shell 11 in contact with the patient's skin softer and improve comfort.

[0038] The side of the needle handle 5 facing the lower shell 11 may be provided with anti-slip texture.

[0039] The anti-puncture structure in this application can also adjust the overall thickness of the anti-puncture structure by adjusting the thickness of the pin 8, the outer diameter of the elastic element 12, the height of the needle handle mounting platform 601, and the thickness of the upper shell 6.

[0040] In this application, the upper shell 6, lower shell 11, pin 8, elastic element 12, and locking pin piece 7 can all adopt a centrally symmetrical structural layout.

[0041] In this application, along the length of the upper shell 6, the movable limiting area of ​​the locking pin piece 7 is located at the front end of the upper shell 6, the movable channel of the needle tube 9 and the needle handle locking position 602 are located in the middle of the upper shell 6, and the mounting port 19 and the needle handle placement platform 601 are located at the rear end of the upper shell 6. At the same time, along the thickness of the upper shell 6, the pin 8 and the elastic element 12 are located below the locking pin piece 7. The overall structure is reasonably and compactly laid out, which fully realizes the staggered use of space and helps to reduce the overall size and thickness of the anti-needle puncture structure.

[0042] like Figure 1As shown, the needle body further includes an extended tube 4, a connecting seat 2, a protective cap 1, a catheter clamp 3, and a needle tube protective sleeve 10. The extended tube 4 can be bonded to the tail end of the needle tube 9, and the middle part of the extended tube is suitable for connecting a drug delivery device or a multi-channel infusion connector. The connecting seat 2 can be bonded to the end of the extended tube 4 away from the needle tube 9. The connecting seat can be a common Luer connector or a multi-channel infusion connector. The protective cap 1 is fitted onto the end of the connecting seat 2 away from the extended tube 4 for dust protection. The catheter clamp 3 is disposed on the extended tube 4. For example, the opening of the catheter clamp 3 can face the needle handle 5. The needle tube protective sleeve 10 is fitted onto the tip of the needle tube 9. For example, the extended tube 4 can be extruded from a high-pressure resistant material, capable of withstanding pressures above 325 PSI. The material can be, but is not limited to, TPU. For example, the connector 2 can have a conical cavity, leaving sufficient clearance to achieve a strong connection with the extension tube 4, capable of withstanding pressure values ​​above 325 PSI. The connection method includes, but is not limited to, light-cured bonding and epoxy bonding. For example, the outer surface of the protective cap 1 can have an anti-slip structure. For example, the infusion channel has the characteristic of withstanding 325 PSI pressure; the needle shown in the drawing for the needle-proof implantable drug delivery device is only a straight structure, but the actual structure is not limited to this. Other pressure-resistant Y-type accessories can be added or replaced in the middle part of the extension tube 4 and at the connector 2 to increase the infusion channel.

[0043] In the initial state, the needle tube 9 passes sequentially through the upper shell 6, the locking plate 7, the pin 8, and the lower shell 11, and is protected by the needle tube protective sleeve 10. The locking plate 7 is located at the lower limit 701 of the limiting space. When needed, first pinch the needle handle 5 to lock it in the needle handle locking position 602; then, pull out the needle tube protective sleeve 10 at the needle tip of the needle tube 9; finally, observe through the puncture field of view 13, pinch the closed needle handle 5, and insert the needle tube 9 into the drug delivery device. When the needle needs to be removed, first press down on both sides of the shell, then pinch the needle handle 5 and lock it in place, then pinch the needle handle 5 and push the needle until the needle tip retracts into the shell. Furthermore, when the needle is pushed, the needle tube 9 moves upward, and the anti-dislodgement flat position 901 on the needle tube 9 will first touch the locking needle plate 7, causing the locking needle plate 7 to move upward; further, when the needle tip of the needle tube 9 is higher than the upper surface of the pin 8, the pin 8 will be pushed to the activated position 18 by the elastic element 12, thereby locking the needle tip downward; further, the upward movement of the locking needle plate 7 will touch the upper limit position 702 of the limiting space and stop, thereby locking the needle tip upward.

[0044] In summary, the needle for the implantable drug delivery device that prevents needlestick injuries provided in this application is easy to puncture, has a reliable structure, is simple to operate, and provides high comfort and safety.

[0045] Obviously, the above embodiments are merely examples for clear illustration and are not intended to cover all possible implementations. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A needle for an implantable drug delivery device, the needle being a needle stick injury prevention needle, characterized in that, include: The needle body structure includes a connected needle tube (9) and needle handle (5), and the needle tube (9) is provided with an anti-dislodgement flat position (901). The anti-puncture structure includes a housing, a locking pin plate (7), a pin (8), and an elastic element (12). The housing is provided with a limiting space; the housing wall is provided with a relief hole (23), and the tip of the needle (9) can extend out of the housing through the relief hole (23); The locking pin piece (7) is movably disposed within the limiting space. The locking pin piece (7) is provided with a limiting hole that matches the anti-detachment flat part (901). The locking pin piece (7) is sleeved on the needle tube (9), and the anti-detachment flat part (901) is located on the side of the locking pin piece (7) near the tip of the needle tube (9). When the needle tube (9) is retracted into the housing, the anti-detachment flat part (901) abuts against the limiting hole on the locking pin piece (7) to restrict the needle tube (9) from being pulled out of the housing. The pin (8) is movably disposed within the housing, and the pin (8) is provided with a clearance groove; The elastic element (12) is disposed inside the housing and adapted to the pin (8); when the needle tube (9) extends out of the housing from the relief groove and relief hole (23), the tube wall of the needle tube (9) squeezes the pin (8) to compress the elastic element (12); when the needle tube (9) retracts into the housing, the elastic element (12) releases and drives the pin (8) to move to a position where the relief groove and the relief hole (23) do not coincide.

2. The needle for the implantable drug delivery device with anti-needle-puncture injury capability according to claim 1, characterized in that, The housing includes an upper shell (6) and a lower shell (11), which are fastened together. The limiting space is located inside the upper shell (6), and the pin (8) and the elastic element (12) are both located inside the upper shell (6); The clearance hole is located on the lower shell (11).

3. The needle for the implantable drug delivery device with anti-needle-puncture injury capability according to claim 2, characterized in that, The upper shell (6) is provided with a placement area (20) for accommodating the elastic element (12). The side of the upper shell (6) facing away from the lower shell (11) is provided with an installation port (19). An installation buckle area (21) is provided between the installation port (19) and the placement area (20). The elastic element (12) enters the upper shell (6) through the mounting port (19) and is installed in the placement area (20). The mounting buckle area (21) is used to limit and protect the elastic element (12).

4. The needle for the implantable drug delivery device with anti-needle-puncture injury capability according to claim 3, characterized in that, Along the thickness direction of the upper shell (6), the position of the placement area (20) is lower than the limiting space.

5. The needle for the implantable drug delivery device with anti-needle-puncture injury capability according to claim 3, characterized in that, The upper shell (6) is provided with a needle handle placement platform (601) and a needle handle locking position (602) on the side facing away from the lower shell (11). The mounting platform of the needle handle (5) is lower than the high point of the upper shell (6); The needle handle (5) is laid flat on the needle handle (5) mounting platform and is at least partially locked in the needle handle locking position (602).

6. The needle for the implantable drug delivery device with anti-needle-puncture injury capability according to claim 2, characterized in that, The upper shell (6) and the lower shell (11) are connected by a snap fastener, and both the upper shell (6) and the lower shell (11) are provided with vents (14).

7. The needle for an implantable drug delivery device designed to prevent needlestick injuries according to claim 6, characterized in that, The upper shell (6) is provided with an anti-misalignment groove on the side facing the lower shell (11), and the lower shell (11) is provided with an anti-misalignment boss (1101) on the side facing the upper shell (6). When the upper shell (6) and the lower shell (11) are fastened together, the anti-misalignment boss (1101) is inserted into the anti-misalignment groove.

8. The needle for the implantable drug delivery device with anti-needle-puncture injury capability according to claim 2, characterized in that, The head end of the upper shell (6) is reserved with a puncture field of view (13).

9. The needle for an implantable drug delivery device designed to prevent needlestick injuries according to claim 2, characterized in that, The lower shell (11) is a flexible lower shell (11).

10. The needle for an implantable drug delivery device designed to prevent needlestick injuries according to claim 1, characterized in that, The needle body also includes an extension tube (4), a connecting seat (2), a protective cap (1), a catheter clamp (3), and a needle tube protective sleeve (10). The extended tube (4) is connected to the tail end of the needle tube (9), and the middle part of the extended tube is suitable for connecting a drug delivery device or a multi-channel infusion connector; The connecting seat (2) is connected to the end of the epitaxial tube (4) away from the needle tube (9); The protective cap (1) is fitted onto the end of the connecting seat (2) away from the extension tube (4); The catheter clamp (3) is disposed on the extension tube (4); The needle tube protective sleeve (10) is fitted onto the tip of the needle tube (9).

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