Hernia abdominal wall hook needle

Abstract

The utility model provides a kind of hernia abdominal wall crochet needle, including tube body, still including first needle, second needle and drive mechanism, first needle is arranged at the end of tube body, first needle inside is provided with first passage, second needle is at least partially arranged in first passage;Drive mechanism drives second needle to move in first passage to make second needle can extend and retract to first passage;Wherein, first needle is one of blunt needle or sharp needle, and second needle is another one of blunt needle or sharp needle. Wherein, tube body is as the support of structure, provides structural support for first needle and second needle, first needle and second needle can be one of blunt needle or sharp needle respectively, and first needle and second needle are mutually nested, and this flexibility makes operator can select appropriate needle type according to the need of operation, realizes the layered control of puncture process.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a hernia abdominal wall hook needle. Background Technology

[0002] With the rapid development of abdominal wall hernia surgery in China over the years, the treatment level of complex abdominal wall hernias has greatly improved, and the number of surgeries has increased significantly. In recent years, hernia surgeons have improved and innovated various surgical techniques based on classic abdominal wall hernia experience. For example, Chinese patent application number 201811213138.4 describes a novel minimally invasive hernia surgical needle that only requires pulling out the entire needle without gripping it, improving the stability of the pull and achieving better surgical results. It has shown good efficacy in the treatment of various hernia diseases. However, facing the ever-expanding patient population and increasingly complex surgical cases, existing hernia surgical hooks can no longer meet diverse clinical needs. For tissue separation and suture suspension, using sharp instruments when blunt dissection is feasible often causes additional harm to the patient and increases surgical time. In addition, sharp disposable surgical instruments are often a major hidden danger of accidental injury to operating room staff. Most hernia and abdominal wall surgeons hope to use a single surgical instrument to simultaneously perform blunt and sharp dissection during surgery, reducing patient harm, shortening surgical time, and reducing accidental injuries in the operating room.

[0003] Existing abdominal wall hooks can only perform sharp dissections during surgery, and cannot simultaneously meet the needs of both sharp and blunt dissections in actual surgery. Utility Model Content

[0004] One technical problem this invention aims to solve is that existing hernia wall hook needles can only perform sharp dissection during surgery, failing to meet the requirements of both sharp and blunt dissection in actual surgery. This invention provides a hernia wall hook needle, including a tube body, and further comprising: The first needle is located at the end of the tube body and has a first channel inside. A second needle, the second needle being at least partially disposed within the first channel; and, A driving mechanism that drives the second needle to move within the first channel so that the second needle can extend and retract into the first channel; The first needle is either a blunt needle or a sharp needle, and the second needle is either a blunt needle or a sharp needle.

[0005] Preferably, the tube body is provided with a cavity, at least part of the drive mechanism is disposed in the cavity, and the drive mechanism is fixedly connected to the second needle.

[0006] Preferably, the driving mechanism includes a first driving part and a second driving part, the second driving part is disposed above the first driving part, and the first driving part is fixedly connected to the second needle. The first driving part is disposed in the cavity, and at least part of the second driving part is disposed outside the cavity. The second driving part is movable between a first position and a second position. The second driving part triggers the first driving part to move the second needle between an extended position and a retracted position.

[0007] Preferably, the second driving part further includes a pressing part and a push rod. The pressing part is fixedly connected to the push rod. A pressing block is provided in annular shape at one end of the push rod away from the pressing part. The cross-section of the pressing block decreases along the direction close to the first driving part.

[0008] Preferably, the driving mechanism includes a first elastic element, one end of which is connected to the inner wall of the cavity, and the other end of which is connected to the first driving part.

[0009] Preferably, the first driving part includes a driving rod, and a transmission part is arranged around one end of the driving rod near the pressing part. The inclined surface of the transmission part corresponds to the pressing block, and the pressing block drives the transmission part to move.

[0010] Preferably, the inner wall of the tube near the transmission part is provided with guide grooves at intervals, and a first protrusion is provided between adjacent guide grooves. The first inclined surface of the first protrusion corresponds to the transmission part, and the transmission part can slide along the first inclined surface.

[0011] Preferably, a second inclined surface is provided at intervals below the adjacent guide grooves, the second inclined surface is connected to the first inclined surface, and the transmission part can slide along the first inclined surface to the second inclined surface.

[0012] Preferably, along the inner diameter direction of the tube, the thickness of the second inclined surface is less than the thickness of the first inclined surface.

[0013] Preferably, the push rod has a guide hole on the side near the drive rod, and the head of the drive rod is embedded in the guide hole.

[0014] Preferably, the centerline of the push rod is on the same straight line as the axis of the first drive unit and the second drive unit.

[0015] Preferably, the pressing part further includes a pressing cap, which is disposed at the end away from the first driving part.

[0016] Preferably, the hernia abdominal wall hook further includes a spring limiting mechanism, which includes a telescopic mechanism and a limiting groove. The telescopic mechanism is disposed on the tube body, and the driving rod is uniformly provided with limiting grooves along its height direction. The telescopic mechanism extends and retracts in the length direction perpendicular to the driving rod to embed into the limiting grooves of different heights.

[0017] Preferably, the tube body is provided with a through hole, and the telescopic mechanism includes a pull rod that passes through the through hole. A portion of the pull rod is disposed on the outside of the tube body, and a portion of the pull rod is disposed within the cavity.

[0018] Preferably, the cross-sectional area of ​​the through hole decreases along the direction away from the cavity. The pull rod includes a head and a shaft, the head being fixedly connected to the shaft, and the cross-sectional area of ​​the head being larger than that of the shaft. The rod head is close to the cavity, and the rod body is away from the cavity.

[0019] Preferably, the telescopic mechanism further includes a second elastic element, which is nested in the rod body with one end abutting against the through hole and the other end abutting against the rod head.

[0020] Preferably, the tube body further includes a first tube body portion and a second tube body portion, wherein the first tube body portion is fixedly connected to the second tube body portion, and the second tube body portion is fixedly connected to the first needle.

[0021] Preferably, the first needle is a blunt needle, the second needle is a sharp needle, and the bottom of the second needle is provided with a micro-hook body.

[0022] Through the above technical solution, the tube body serves as a structural support, providing structural support for the first and second needles. The first and second needles can each be either blunt or sharp needles, and they are nested together. This flexibility allows the operator to select the appropriate needle type according to the surgical needs, achieving layered control of the puncture process. For example, a sharp needle can be used first to precisely penetrate the skin and superficial tissues, followed by a blunt needle advancing into deeper tissues, reducing the risk of vascular and nerve damage. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a partial three-dimensional structural diagram of the hernia abdominal wall hook according to an embodiment of the present invention.

[0025] Figure 2 This is a cross-sectional structural schematic diagram of the hernia abdominal wall hook according to an embodiment of the present invention.

[0026] Figure 3 This is a partial three-dimensional structural diagram of the second driving unit according to an embodiment of the present utility model.

[0027] Figure 4 This is a three-dimensional structural diagram of the drive rod and part of the transmission part of the hernia abdominal wall hook according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the guide groove portion of the hernia wall hook needle according to an embodiment of the present invention; Figure 6 for Figure 2 A magnified view of part A in the image; Figure 7 for Figure 2 A magnified view of part B in the image; Figure 8 for Figure 2 A magnified view of part C in the image.

[0029] Explanation of reference numerals in the attached figures: 100 Hernia Abdominal Wall Hook; 1 Tube Body; 11 First Needle Head; 111 First Channel; 12 Second Needle Head; 13 Cavity; 14 First Tube Body Section; 15 Second Tube Body Section; 3 Drive Mechanism; 31 First Drive Section; 311 Drive Rod; 3111 Head; 312 Transmission Section; 32 Second Drive Section; 321 Pressing Section; 322 Top Rod; 323 Pressing Block; 324 Pressing Cap; 33 First Elastic Member; 4 Guide Groove; 41 First Protrusion; 411 First Inclined Surface; 412 Second Inclined Surface; 5 Spring Limiting Mechanism; 51 Telescopic Mechanism; 511 Second Elastic Member; 512 Pull Rod; 5121 Rod Head; 52 Limiting Groove; 6 Through Hole; 7 Micro Hook Body. Detailed Implementation

[0030] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to exemplarily illustrate the principles of this utility model, but should not be used to limit the scope of this utility model. This utility model can be implemented in many different forms and is not limited to the specific embodiments of the utility model described herein, but includes all technical solutions falling within the scope of the claims.

[0031] These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0032] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, 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. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0034] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0035] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0036] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0037] This embodiment provides a hernia abdominal wall hook 100, such as Figures 1-8 As shown, the device includes a tube body 1, a first needle 11, a second needle 12, and a drive mechanism 3. The first needle 11 is located at the end of the tube body 1, and a first channel 111 is provided inside the first needle 11. The second needle 12 is at least partially located within the first channel 111. The drive mechanism 3 drives the second needle 12 to move within the first channel 111 so that the second needle 12 can extend and retract into the first channel 111. The first needle 11 is either a blunt needle or a sharp needle, and the second needle 12 is either a blunt needle or a sharp needle.

[0038] The tube body 1 serves as a structural support, providing structural support for the first needle 11 and the second needle 12. The first needle 11 and the second needle 12 can be either blunt or sharp needles, and they are nested together. This flexibility allows the operator to select the appropriate needle type according to the surgical needs, achieving layered control of the puncture process. For example, a sharp needle can be used first to precisely penetrate the skin and superficial tissues, followed by a blunt needle advancing into deeper tissues, reducing the risk of vascular and nerve damage. Because this hook needle can separate blunt and sharp needles within the same instrument, surgeons do not need to frequently change instruments, thereby reducing surgical time and improving surgical efficiency.

[0039] In a preferred embodiment, a cavity 13 is provided inside the tube body 1, and at least a portion of the drive mechanism 3 is disposed within the cavity 13. The drive mechanism 3 is fixedly connected to the second needle 12. Disposing of the drive mechanism 3 within the cavity 13 of the tube body 1 makes the entire surgical instrument structure more compact. The fixed connection of the drive mechanism 3 to the second needle 12 effectively improves the stability of the needle during operation, thereby enhancing the precision and safety of the surgery.

[0040] In a preferred embodiment, the drive mechanism 3 includes a first drive part 31 and a second drive part 32, the second drive part 32 being disposed above the first drive part 31, and the first drive part 31 being fixedly connected to the second needle 12. The first drive unit 31 is disposed within the cavity 13, and at least a portion of the second drive unit 32 is disposed outside the cavity 13. The second drive unit 32 is movable between a first position and a second position, which are two extreme positions of the second drive unit 32 along the axial direction of the tube. The second drive unit 32 triggers the first drive unit 31 to move the second needle 12 between an extended position and a retracted position. The extended position is where the second needle 12 extends beyond the first needle 11, and the retracted position is where the second needle 12 retracts back into the first needle 11. By placing the first drive unit 31 within the cavity 13 and the second drive unit 32 outside the cavity 13, a layered drive mechanism is formed. This design makes the operation of the drive mechanism 3 more flexible, allowing the surgeon to conveniently control the extension and retraction of the second needle 12 without interfering with the internal structure of the cavity 13. The movement of the second drive unit 32 can precisely trigger the first drive unit 31, thereby achieving precise control of the second needle 12. This precise control capability helps the surgeon perform more meticulous operations during surgery, reducing the risk of misoperation and improving the safety and effectiveness of the surgery.

[0041] In a preferred embodiment, the second drive unit 32 further includes a pressing part 321 and a push rod 322. The pressing part 321 is fixedly connected to the push rod 322. A pressing block 323 is annularly arranged at the end of the push rod 322 away from the pressing part 321. The cross-section of the pressing block 323 decreases along the direction close to the first drive unit 31. The pressing block 323 allows for more effective concentration of force when pressure is applied. As the cross-section of the pressing block 323 decreases, the force applied to it can be more concentratedly transmitted to the first drive unit 31, thereby improving the response speed and efficiency of the drive mechanism 3.

[0042] In a preferred embodiment, the drive mechanism 3 includes a first elastic element 33, one end of which is connected to the inner wall of the cavity 13, and the other end of which is connected to the first drive unit 31. The first elastic element 33 enables the first drive unit 31 to be elastic during operation and can effectively absorb the impact and vibration generated during operation, reducing the impact on other parts of the instrument and thus improving the overall operational stability. The first elastic element 33 and the pressing part 321 work together on the second needle 12. The pressing part 321 drives the second needle 12 to move outside the first needle 11, and then the rebound force of the first elastic element 33 causes the second needle 12 to spring back into the first needle 11 after being pressed, completing the movement of the second needle 12 between the extended and retracted positions.

[0043] In a preferred embodiment, the first drive unit 31 includes a drive rod 311. A transmission unit 312 is arranged around one end of the drive rod 311 near the pressing unit 321. The inclined surface of the transmission unit 312 corresponds to the pressing block 323, which drives the transmission unit 312 to move. The inclined surface of the transmission unit 312 allows the force applied by the pressing block 323 to be effectively converted into movement of the drive rod 311. This inclined surface optimizes the force transmission path, improves driving efficiency, and allows the surgeon to more directly drive the extension and retraction of the second needle 12 when applying pressure.

[0044] In a preferred embodiment, guide grooves 4 are spaced around the inner wall of the tube 1 near the transmission part 312. A first protrusion 41, also trapezoidal in shape, is positioned between adjacent guide grooves 4. The first inclined surface 411 of the first protrusion 41 corresponds to the transmission part 312, allowing the transmission part 312 to slide along the first inclined surface 411. The guide grooves 4 provide a movement trajectory for the transmission part 312, ensuring its stability during movement. This guiding function effectively prevents the transmission part 312 from deviating or becoming unstable during operation, thereby improving the overall operational accuracy.

[0045] In a preferred embodiment, a second inclined surface 412 is provided at intervals below adjacent guide grooves 4. The second inclined surface 412 is connected to the first inclined surface, and the transmission part 312 can slide along the first inclined surface 411 onto the second inclined surface 412. The transmission part 312 can slide between the first inclined surface 411 and the second inclined surface 412, allowing the surgeon to achieve more precise control during operation. When the second needle 12 is in the extended position, the transmission part 312 rests against the second inclined surface 412, providing better support and reducing shaking or deviation during operation. This improves the overall safety and reliability of the operation and reduces the risk of misoperation.

[0046] In a preferred embodiment, along the inner diameter direction of the tube body 1, the thickness of the second inclined surface 412 is less than the thickness of the first inclined surface 411, ensuring that the transmission part 312 can always slide inside the cavity 13. When the second needle 12 is in a compressed state, the transmission part 312 slides directly into the guide groove 4 through the first inclined surface 411. Under the pressure of the pressing part 321, it slides out of the guide groove 4. The transmission part 312 then slides onto the second inclined surface 412 through the first inclined surface 411 and is blocked by the first protrusion 41 in the middle. When the second needle 12 is extended beyond the first needle 11, after the second needle 12 has finished its work, pressing the pressing part 321 again causes the transmission part 312 to rotate within the cavity 13 through the action of the first elastic element 33, and slides into the guide groove 4 through the first inclined surface 411 on the first protrusion 41, at which point the second needle 12 is in a retracted state. Then, after pressing, the second needle 12 extends, and after pressing the pressing part 321 again, the second driving part 32 drives the second needle 12 to extend and then retract into the first needle 11. The second needle 12 is always in a compressed or extended state within the first needle 11, and the pressing block 323 is always within the guide groove 4.

[0047] In a preferred embodiment, the push rod 322 has a guide hole on the side near the drive rod 311, and the head 3111 of the drive rod 311 is embedded in the guide hole. The guide hole provides a path for the drive rod 311 to move, ensuring its stability during movement and effectively preventing the drive rod 311 from deviating or shaking during operation, thereby improving the accuracy and safety of the overall operation.

[0048] In a preferred embodiment, the centerline of the push rod 322 is collinear with the axes of the first drive unit 31 and the second drive unit 32, ensuring that the centerline of the push rod 322 is aligned with the axis of the drive unit. This ensures that the force transmission path is straight, minimizes energy loss, ensures that the transmission unit 312 remains stable during sliding, improves the force transmission efficiency, and allows the force applied by the surgeon to be more effectively converted into the movement of the drive unit.

[0049] In a preferred embodiment, the pressing part 321 further includes a pressing cap 324, which is disposed at the end away from the first driving part 31. The pressing cap 324 provides the surgeon with a more comfortable contact surface. When the surgeon applies pressure, the pressing cap 324 can effectively distribute the applied force, reduce hand fatigue, and thus improve the comfort and operating experience of the surgery. The end of the pressing cap 324 is curved and made of rubber.

[0050] In a preferred embodiment, the hernia abdominal wall hook needle 100 further includes a spring limiting mechanism 5, which includes a telescopic mechanism 51 and limiting grooves 52. The telescopic mechanism 51 is disposed on the tube body 1, and the driving rod 311 is uniformly provided with limiting grooves 52 along its height direction. The telescopic mechanism 51 extends and retracts in the length direction perpendicular to the driving rod 311 to embed into the limiting grooves 52 at different heights. By providing multiple limiting grooves 52, the telescopic mechanism 51 can flexibly adjust the height of the driving rod 311 according to surgical needs. This flexibility allows the surgeon to quickly adjust the height of the second needle tip 12 in the instrument according to different surgical situations and the specific needs of the patient, ensuring the stability of the driving rod 311 at different height positions and improving the applicability of the instrument.

[0051] In a preferred embodiment, the tube body 1 is provided with a through hole 6, and the telescopic mechanism 51 includes a pull rod 512 that passes through the through hole 6. A portion of the pull rod 512 is located on the outside of the tube body 1, and a portion is located inside the cavity 13. This allows the surgeon to directly operate the pull rod 512 from outside the tube body 1, thereby conveniently adjusting the height or position of the telescopic mechanism 51 and improving surgical efficiency. Designing the pull rod 512 as a through-hole simplifies the overall structure and reduces unnecessary connecting parts.

[0052] In a preferred embodiment, the cross-sectional area of ​​the through hole 6 decreases along the direction away from the cavity 13. The pull rod 512 includes a rod head 5121 and a rod body, with the rod head 5121 fixedly connected to the rod body. The cross-sectional area of ​​the rod head 5121 is larger than that of the rod body, wherein the rod head 5121 is closer to the cavity 13, and the rod body is farther away from the cavity 13. The design that the cross-sectional area of ​​the rod head 5121 is larger than that of the rod body allows the rod head 5121 to effectively limit the range of movement of the pull rod 512 when it is inserted into the through hole 6, enhancing the positioning stability of the pull rod 512 within the cavity 13 and preventing accidental offset or wobbling of the pull rod 512 during operation, thereby improving the overall accuracy of the operation. The gradually decreasing cross-sectional area of ​​the through hole 6 allows the pull rod 512 to be inserted and pulled out more smoothly, reducing friction and resistance during operation.

[0053] In a preferred embodiment, the telescopic mechanism 51 further includes a second elastic element 511, which is nested within the rod body with one end abutting against the through hole 6 and the other end abutting against the rod head 5121. The second elastic element 511 provides additional elastic support for the pull rod 512. By adding an elastic element between the rod body and the through hole 6, the impact and vibration generated during operation can be effectively absorbed, reducing the impact on other parts of the instrument and thus improving the overall operational stability. The second elastic element 511 can provide a certain rebound force during the movement of the pull rod 512, ensuring the stability of the pull rod 512 at different height positions.

[0054] In a preferred embodiment, the tube body 1 further includes a first tube body portion 14 and a second tube body portion 15, with the first tube body portion 14 fixedly connected to the second tube body portion 15, and the second tube body portion 15 fixedly connected to the first needle tip 11. The fixed connection between the first tube body portion 14 and the second tube body portion 15 enhances the structural stability of the entire tube body 1. By firmly connecting the two tube body components 1, loosening or displacement during surgery can be effectively prevented, thereby improving the overall reliability of the instrument. The design of dividing the tube body 1 into the first tube body portion 14 and the second tube body portion 15 simplifies the assembly and disassembly of the instrument. Doctors or technicians can more easily perform maintenance and cleaning, ensuring the hygiene and safety of the instrument and reducing the risk of infection.

[0055] In a preferred embodiment, the first needle 11 is a blunt needle, and the second needle 12 is a sharp needle, with a micro-hook body 7 at the bottom of the second needle 12. The blunt design of the first needle 11 is suitable for blunt dissection, effectively reducing damage to surrounding tissues and lowering the risk of postoperative complications. The sharp design of the second needle 12 is suitable for sharp dissection, enabling more effective tissue cutting. This dual functionality allows surgeons to flexibly choose which needle to use based on surgical needs, thereby improving surgical adaptability and flexibility. The micro-hook body 7 at the bottom of the second needle 12 provides additional gripping and fixation capabilities during surgery. The micro-hook body 7 effectively grasps tissue, helping surgeons better control and locate target tissue during surgery, improving surgical precision. By combining blunt and sharp needles in the same instrument, surgeons do not need to frequently change instruments during surgery. This design simplifies the surgical procedure, reduces surgical time, and improves surgical efficiency.

[0056] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solution of this utility model based on the above description.

[0057] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A hernia abdominal wall hook, comprising a tube (1), characterized in that, Also includes: The first needle (11) is located at the end of the tube (1), and the first needle (11) has a first channel (111) inside. A second needle (12) is at least partially disposed within the first channel (111); and, A drive mechanism (3) drives the second needle (12) to move within the first channel (111) so that the second needle (12) can extend and retract into the first channel (111). The first needle (11) is either a blunt needle or a sharp needle, and the second needle (12) is either a blunt needle or a sharp needle.

2. The hernia abdominal wall hook needle according to claim 1, characterized in that, The tube (1) is provided with a cavity (13), and at least part of the drive mechanism (3) is provided in the cavity (13). The drive mechanism (3) is fixedly connected to the second needle (12).

3. The hernia abdominal wall hook needle according to claim 2, characterized in that, The driving mechanism (3) includes a first driving part (31) and a second driving part (32), the second driving part (32) is disposed above the first driving part (31), and the first driving part (31) is fixedly connected to the second needle (12). The first drive unit (31) is disposed inside the cavity (13), and at least part of the second drive unit (32) is disposed outside the cavity (13). The second drive unit (32) is movable between a first position and a second position. The second drive unit (32) triggers the first drive unit (31) to move the second needle (12) between an extended position and a retracted position.

4. The hernia abdominal wall hook according to claim 3, characterized in that, The second drive unit (32) further includes a pressing part (321) and a push rod (322). The pressing part (321) is fixedly connected to the push rod (322). A pressing block (323) is provided annularly at one end of the push rod (322) away from the pressing part (321). The cross-section of the pressing block (323) decreases along the direction close to the first drive unit (31).

5. The hernia abdominal wall hook according to claim 3, characterized in that, The drive mechanism (3) includes a first elastic element (33), one end of which is connected to the inner wall of the cavity (13), and the other end of which is connected to the first drive unit (31).

6. The hernia abdominal wall hook according to claim 4, characterized in that, The first driving part (31) includes a driving rod (311), and a transmission part (312) is arranged around one end of the driving rod (311) near the pressing part (321). The inclined surface of the transmission part (312) corresponds to the pressing block (323), and the pressing block (323) drives the transmission part (312) to move.

7. The hernia abdominal wall hook according to claim 6, characterized in that, The inner wall of the tube (1) near the transmission part (312) is provided with guide grooves (4) spaced around it. A first protrusion (41) is provided between adjacent guide grooves (4). The first inclined surface (411) of the first protrusion (41) corresponds to the transmission part (312), and the transmission part (312) can slide along the first inclined surface (411).

8. The hernia abdominal wall hook according to claim 7, characterized in that, Below the adjacent guide groove (4), there is also a second inclined surface (412) spaced apart. The second inclined surface (412) is connected to the first inclined surface, and the transmission part (312) can slide along the first inclined surface (411) to the second inclined surface (412).

9. The hernia abdominal wall hook as described in claim 8, characterized in that, Along the inner diameter direction of the tube (1), the thickness of the second inclined surface (412) is less than the thickness of the first inclined surface (411).

10. The hernia abdominal wall hook as described in claim 6, characterized in that, The top rod (322) has a guide hole on the side near the drive rod (311), and the head (3111) of the drive rod (311) is embedded in the guide hole.

11. The hernia abdominal wall hook as described in claim 6, characterized in that, The centerline of the push rod (322) is on the same straight line as the axes of the first drive unit (31) and the second drive unit (32).

12. The hernia abdominal wall hook according to claim 4, characterized in that, The pressing part (321) also includes a pressing cap (324), which is disposed at one end away from the first driving part (31).

13. The hernia abdominal wall hook according to claim 6, characterized in that, The hernia abdominal wall hook (100) also includes a spring limiting mechanism (5), which includes a telescopic mechanism (51) and a limiting groove (52). The telescopic mechanism (51) is disposed on the tube (1), and the driving rod (311) is uniformly provided with limiting grooves (52) along its height direction. The telescopic mechanism (51) extends and retracts in the length direction perpendicular to the driving rod (311) to be embedded in the limiting grooves (52) of different heights.

14. The hernia abdominal wall hook according to claim 13, characterized in that, The tube body (1) is provided with a through hole (6), and the telescopic mechanism (51) includes a pull rod (512). The pull rod (512) passes through the through hole (6). A part of the pull rod (512) is located on the outside of the tube body (1), and a part of the pull rod (512) is located inside the cavity (13).

15. The hernia abdominal wall hook according to claim 14, characterized in that, Along the direction away from the cavity (13), the cross-sectional area of ​​the through hole (6) decreases. The pull rod (512) includes a rod head (5121) and a shaft, wherein the rod head (5121) is fixedly connected to the shaft, and the cross-sectional area of ​​the rod head (5121) is larger than the cross-sectional area of ​​the shaft. The rod head (5121) is close to the cavity (13), and the rod body is away from the cavity (13).

16. The hernia abdominal wall hook according to claim 15, characterized in that, The telescopic mechanism (51) further includes a second elastic element (511), which is nested on the rod body and one end of the second elastic element (511) abuts against the through hole (6), and the other end of the second elastic element (511) abuts against the rod head (5121).

17. The hernia abdominal wall hook according to claim 1, characterized in that, The tube body (1) further includes a first tube body portion (14) and a second tube body portion (15), wherein the first tube body portion (14) is fixedly connected to the second tube body portion (15), and the second tube body portion (15) is fixedly connected to the first needle (11).

18. The hernia abdominal wall hook according to claim 1, characterized in that, The first needle (11) is a blunt needle, and the second needle (12) is a sharp needle. The bottom of the second needle (12) is provided with a micro-hook body (7).

Images