Multifunctional knee joint driver

Abstract

The application relates to the field of medical instruments, in particular to a multifunctional knee joint driving device, which comprises a fixed rod, a hammering sleeve slidably connected to the fixed rod and a mounting connector mounted at one end of the fixed rod, the mounting connector is used for detachable connection with a surgical instrument, a first stopper is fixedly connected to the fixed rod, the first stopper is located on the side of the hammering sleeve facing the mounting connector, an end cap is fixedly connected to the end of the fixed rod away from the mounting connector, when the hammering sleeve is operated to slide on the fixed rod, the hammering sleeve hammers the first stopper or a second stopper to exert a driving or pulling force on the surgical instrument mounted on the mounting connector. The application has the effects of reducing the probability of interference between the surgical instrument and a shadowless lamp during surgery and improving the convenience of surgery.

Description

Technical Field

[0001] This application relates to the field of medical devices, and in particular to a multifunctional knee joint inserter. Background Technology

[0002] A knee inserter is a device used in knee replacement surgery to insert and remove instruments that are needed. It is used in surface knee replacement surgery.

[0003] In use, the necessary surgical instruments, such as bone cutters and medullary reamers, are directly attached to the inserter. Then, external tools are used to tap the inserter to apply force, thus inserting the instruments into the surgical site. When it is necessary to remove the instruments, an external retrieval device is attached to the inserter, and the inserter is pulled out using the retrieval device.

[0004] However, during surgery, when using external tools to tap the inserter or attach the extractor to the inserter, it is necessary to avoid interference with the surgical light to prevent contamination and damage to the surgical instruments. Therefore, the operating space is limited, making the operation very inconvenient. Summary of the Invention

[0005] In order to reduce the probability of interference between surgical instruments and the shadowless lamp during surgery and improve the convenience of surgery, this application provides a multifunctional knee joint inserter.

[0006] The multifunctional knee joint inserter provided in this application adopts the following technical solution:

[0007] A multi-functional knee joint inserter includes a fixed rod, a hammer sleeve slidably connected to the fixed rod, and a mounting connector mounted on one end of the fixed rod. The mounting connector is used for detachable connection with a surgical instrument. A first stop is fixedly connected to the fixed rod, located on the side of the hammer sleeve facing the mounting connector. An end cap is fixedly connected to the end of the fixed rod away from the mounting connector. When the hammer sleeve is slid on the fixed rod, the hammer sleeve applies a hammering force to insert or remove the surgical instrument mounted on the mounting connector by hammering the first stop or the second stop.

[0008] By adopting the above technical solution, during use, the surgical instruments are directly installed on the end of the fixed rod via the mounting connector. When it is necessary to drive the surgical instruments in, the hammering sleeve is slid along the fixed rod, causing it to strike the first stop, thus applying a hammering force to the surgical instruments mounted on the fixed rod. When it is necessary to remove the surgical instruments, the hammering sleeve is slid along the fixed rod, causing the end cap of the hammering sleeve to strike the end cap, thus applying an outward force to the fixed rod, facilitating the removal of the surgical instruments. Since only the sliding of the hammering sleeve is required to apply force, it does not occupy excessive surgical space, greatly reducing the probability of interference between the surgical instruments and the shadowless lamp during surgery, and improving the convenience of the operation.

[0009] Optionally, a second stop is fixed to the fixing rod, and the hammering sleeve is located between the first stop and the second stop. The distance between the first stop and the second stop is the same as the length of the hammering sleeve. The first stop and the second stop have rectangular cross-sections. The hammering sleeve has a first groove at one end facing the first stop for the first stop to slide into, and a second groove at one end facing the second stop for the second stop to slide into. When the first stop slides into the first groove, the second stop is misaligned with the second groove.

[0010] By adopting the above technical solution, when the operating hammer sleeve slides on the fixed rod until the first stop is located in the first groove, the operating hammer sleeve slides towards the second stop, and the hammer sleeve strikes the second stop, applying a hammering force to the second stop. When the operating hammer sleeve slides on the fixed rod until the second stop is located in the second groove, the operating hammer sleeve slides towards the first stop, and the hammer sleeve strikes the first stop, applying a hammering force to the first stop. This ensures that the hammer sleeve can only apply a hammering force to the first stop or a direct hammering force to the second stop at a time, without applying a reverse force to the surgical instrument due to improper operation.

[0011] Optionally, an end cap is fixed to one end of the fixing rod away from the mounting joint, and the end cap is located on the side of the second stop block opposite to the hammer sleeve.

[0012] By adopting the above technical solution, doctors can fix the position of the injection device by holding the end cap, making the operation more convenient.

[0013] Optionally, an elastic reset member is also provided between the fixed rod and the hammer sleeve to reset the hammer sleeve. When the hammer sleeve slides on the fixed rod, the force applied to the hammer sleeve disappears, and the hammer sleeve is reset under the action of the elastic reset member to hammer the first stop or the second stop.

[0014] By adopting the above technical solution, the automatic reset of the hammer sleeve can be achieved, thereby realizing the automatic hammering of the first or second stop block without the need for manual hammering force, making the operation more labor-saving.

[0015] Optionally, the hammer sleeve has an internal mounting cavity for mounting an elastic reset member. The elastic reset member includes a fixing ring fixed to the fixing rod, a first reset spring disposed between one end of the mounting cavity and the fixing ring, and a second reset spring disposed between the other end of the mounting cavity and the fixing ring.

[0016] By adopting the above technical solution, when the hammer sleeve slides towards the direction of the first return spring, the hammer sleeve will compress the second return spring. When the force applied to the hammer sleeve disappears, the hammer sleeve will be reset under the elastic force of the second return spring. When the hammer sleeve slides towards the direction of the second return spring, the hammer sleeve will compress the first return spring. When the force applied to the hammer sleeve disappears, the hammer sleeve will be reset under the elastic force of the first return spring.

[0017] Optionally, the hammering sleeve includes a first sliding cylinder with one end open and a second sliding cylinder fixed to the open end of the first sliding cylinder and also with one end open. The openings of the first sliding cylinder and the second sliding cylinder are arranged opposite to each other, and the mounting cavity is formed inside the first sliding cylinder and the second sliding cylinder.

[0018] By adopting the above technical solution, the first reset spring and the second reset spring are installed in the mounting cavity composed of the first sliding cylinder and the second sliding cylinder.

[0019] Optionally, a limiting block is fixedly attached to the outer wall of the fixing ring, and a limiting groove is provided on the inner wall of the mounting cavity for the limiting block to slide.

[0020] By adopting the above technical solution, the combination of the limiting block and the limiting groove can guide the hammer sleeve, making it easier for the first stop block to slide into the first groove or the second stop block to slide into the second groove.

[0021] Optionally, the limiting groove includes a first limiting groove formed on the inner wall of the first sliding cylinder, a second limiting groove formed on the inner wall of the second sliding cylinder, and a connecting groove connecting the first limiting groove and the second limiting groove. When the first stop block slides in the first sliding groove, the limiting block slides in the second limiting groove; when the second stop block slides in the second sliding groove, the limiting block slides in the first limiting groove.

[0022] By adopting the above technical solution, when it is necessary to insert the surgical instrument, the hammering sleeve is directly slid towards the direction of the second stop. At this time, the second stop slides into the second groove. When the force applied to the hammering sleeve is released, the hammering sleeve resets under the elastic action of the first return spring, thereby hammering the first stop. During this process, the limiting block slides in the second limiting groove. When it is necessary to remove the surgical instrument, the hammering sleeve is rotated, causing the limiting block to slide from the second limiting groove into the first limiting groove. At this time, when the hammering sleeve is slid towards the direction of the first stop, the first stop can slide into the first groove. When the force applied to the hammering sleeve is released, the hammering sleeve resets under the action of the second return spring. During this process, the limiting block slides in the first limiting groove. This facilitates the positioning of the first stop and the first groove, or the second stop and the second groove.

[0023] Optionally, the mounting connector includes a mounting head fixed to the end of the fixing rod away from the second stop, the mounting head having an insertion hole for inserting a block on a surgical instrument, and a fixing member for fixing the position of the insertion block in the insertion hole is provided between the mounting head and the fixing rod.

[0024] By adopting the above technical solution, when using the surgical instrument, the insert block on the surgical instrument is directly inserted into the socket, and the position of the insert block in the socket is fixed by the fastener, thus fixing the relative position of the surgical instrument and the fixing rod, and completing the installation of the surgical instrument.

[0025] Optionally, the fixing rod has a mounting hole at one end facing the mounting head. The fixing member includes a plug rod slidably connected in the mounting hole and an abutment spring fixed between the bottom of the mounting hole and the plug rod. A sliding sleeve is slidably connected to the fixing rod. A sliding groove communicating with the mounting hole is formed on the outer wall of the fixing rod. A connecting rod is fixed between the plug rod and the sliding sleeve. The connecting rod is slidably assembled in the sliding groove.

[0026] By adopting the above technical solution, when the insert is inserted into the insertion hole, the insert rod can be inserted into the limiting hole on the insertion hole under the elastic action of the abutment spring, thereby fixing the position of the insert in the insertion hole. When it is necessary to change surgical instruments, simply operate the sliding sleeve to slide away from the mounting head, and the connecting rod will drive the insert rod into the mounting hole, contacting the mating relationship between the insert rod and the insert. The doctor can then directly remove the insert from the insertion hole; installation and disassembly are very convenient.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] This application sets up a hammer sleeve, and by sliding the hammer sleeve on the fixed rod, force is applied to the surgical instrument installed at one end of the fixed rod. This greatly reduces the space required for operation, and also reduces the surgical steps of connecting the inserter to the external puller, simplifies the surgical procedure, reduces the probability of interference between the surgical instrument and the shadowless lamp during surgery, and improves the convenience of surgery.

[0029] The elastic reset component allows the hammer sleeve to automatically reset under the elastic action of the component, and generates a huge hammering force during the reset. This eliminates the need for doctors to manually operate the hammer sleeve to perform the hammering, making the operation more labor-saving and convenient.

[0030] The setting of the limiting block and the limiting groove facilitates the positioning of the first stop block and the first slide groove, as well as the second stop block and the second slide groove. It also limits the sliding distance of the hammer sleeve. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0032] Figure 2 This is a schematic diagram to illustrate the structure of the mounting joint.

[0033] Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this application.

[0034] Figure 4 This is a schematic diagram to illustrate the structure of the elastic reset component.

[0035] Figure 5 This is a schematic diagram to illustrate the structure of the limiting groove.

[0036] Explanation of reference numerals in the attached drawings: 1. Fixing rod; 11. First stop block; 12. End cap; 13. Mounting hole; 14. Sliding groove; 15. Second stop block; 2. Hammering sleeve; 21. First sliding cylinder; 211. First sliding groove; 22. Second sliding cylinder; 221. Second sliding groove; 23. Mounting cavity; 24. Limiting groove; 241. First limiting groove; 242. Second limiting groove; 243. Connecting groove; 3. Mounting connector; 31. Mounting head; 311. Insertion hole; 32. Fixing element; 321. Insertion rod; 322. Abutment spring; 323. Sliding sleeve; 324. Connecting rod; 4. Surgical instrument; 41. Insertion block; 42. Limiting hole; 5. Elastic reset element; 51. Fixing ring; 52. First reset spring; 53. Second reset spring; 54. Limiting block. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0038] This application discloses a multifunctional knee joint inserter.

[0039] Example 1:

[0040] Reference Figure 1 The multi-functional knee joint inserter includes a fixed rod 1, a hammering sleeve 2 slidably connected to the fixed rod 1, and a mounting connector 3 installed at one end of the fixed rod 1 for mounting a surgical instrument 4 onto the fixed rod 1. In use, the surgical instrument 4 can be mounted on the fixed rod 1 through the mounting connector 3, and a hammering force can be applied to the mounting connector 3 by sliding the hammering sleeve 2.

[0041] Specifically, a first stop 11 is fixed to the fixed rod 1, located at the end of the hammering sleeve 2 facing the mounting connector 3. A second stop 15 is fixed to the end of the fixed rod 1 away from the mounting connector 3. In use, the surgical instrument 4 can be directly mounted on the fixed rod 1 via the mounting connector 3. Then, the operator manually slides the hammering sleeve 2 on the fixed rod 1, striking either the first stop 11 or the second stop 15 to apply hammering force to the surgical instrument 4, facilitating its insertion or removal. This eliminates the need for external tools to strike the inserter or connect an extractor to the inserter, simplifying the tools used during surgery, streamlining the operation, and reducing the required operating space. Since the hammering sleeve 2 always slides on the fixed rod 1, it also significantly reduces the probability of interference between the surgical instrument 4 and the shadowless lamp during surgery, improving the convenience of the procedure.

[0042] The second stop 15 can also be used as a handle to make it easier for doctors to hold the injector.

[0043] Reference Figure 2 The mounting connector 3 includes a mounting head 31 fixed to the end of the fixing rod 1 away from the second stop 15. Insertion holes 311 are provided on opposite sides of the mounting head 31. The direction of the insertion holes 311 is perpendicular to the axis of the fixing rod 1. The insertion holes 311 are used for inserting the insert block 41 of the surgical instrument 4. By inserting the insert block 41 of the surgical instrument 4 into the insertion hole 311, the surgical instrument 4 can be mounted on the mounting head 31, thus achieving the installation of the surgical instrument 4.

[0044] In order to fix the position of the surgical instrument 4 on the fixing rod 1 and prevent the insertion block 41 on the surgical instrument 4 from sliding out of the insertion hole 311 under the action of external force, a fixing member 32 is also provided to fix the position of the insertion block 41 in the insertion hole 311.

[0045] Reference Figure 2The fixing rod 1 has a mounting hole 13 at one end facing the mounting head 31, which is perpendicularly connected to the insertion hole 311. The fixing member 32 includes an insertion rod 321 slidably connected in the mounting hole 13 and an abutment spring 322 fixed between the closed end of the mounting hole 13 and the insertion rod 321. A limiting hole 42 for inserting the insertion rod 321 is also provided on the insertion block 41 of the surgical instrument 4. Normally, under the elastic force of the abutment spring 322, the end of the insertion rod 321 away from the abutment spring 322 extends into the insertion hole 311. When the insertion block 41 on the surgical instrument 4 is inserted into the insertion hole 311, the insertion rod 321 is also inserted into the limiting hole 42 under the elastic force of the abutment spring 322, thereby fixing the position of the insertion block 41 in the insertion hole 311.

[0046] The fixing component 32 also includes a sliding sleeve 323 slidably connected to the fixing rod 1. A sliding groove 14 communicating with the mounting hole 13 is provided on the side wall of the fixing rod 1. A connecting rod 324 is fixedly connected between the outer wall of the insertion rod 321 and the inner wall of the sliding sleeve 323. The connecting rod 324 is slidably assembled in the sliding groove 14. When it is necessary to remove the insertion block 41 from the insertion hole 311, the sliding sleeve 323 can be directly operated to move away from the mounting head 31. At this time, the sliding sleeve 323 also drives the insertion rod 321 to move away from the insertion hole 311 through the connecting rod 324. The connecting rod 324 also slides in the sliding groove 14. The insertion rod 321 will also slide completely into the mounting hole 13 and press the abutment spring 322. At this time, the insertion block 41 can be directly removed from the insertion hole 311.

[0047] The implementation principle of Embodiment 1 of this application is as follows: In use, the sliding sleeve 323 can be operated to slide on the fixed rod 1, so that the insertion rod 321 slides into the mounting hole 13. The doctor can then directly place the insertion block 41 of the appropriate surgical instrument 4 into the insertion hole 311, release the force applied to the sliding sleeve 323, and under the action of the elastic force of the abutment spring 322, the insertion rod 321 extends into the insertion hole 311 and inserts into the limiting hole 42, thereby fixing the position of the surgical instrument 4 on the fixed rod 1. The doctor can directly operate the hammer sleeve 2 to slide on the fixed rod 1 and hammer the first stop 11 to apply a force to the surgical instrument 4 to be inserted into the human body. After the operation is completed, the doctor can directly operate the hammer sleeve 2 to slide on the fixed rod 1 and hammer the second stop 15 to apply a force to pull out the surgical instrument 4. No external tools are needed, which greatly simplifies the surgical process and the tools used. Moreover, since the hammer sleeve 2 always slides on the fixed rod 1, the space occupied by the operation is greatly reduced, the probability of interference between the surgical instrument 4 and the shadowless lamp during the operation is reduced, and the convenience of the operation is improved.

[0048] Example 2:

[0049] Reference Figure 3 and Figure 4The difference between this embodiment and embodiment 1 is that an elastic reset member 5 is provided between the hammer sleeve 2 and the fixed rod 1 to drive the hammer sleeve 2 to reset. The distance between the first stop 11 and the second stop 15 is the same as the length of the hammer sleeve 2. Under normal conditions, the hammer sleeve 2 is located between the first stop 11 and the second stop 15.

[0050] The hammer sleeve 2 includes a first sliding cylinder 21 with one end open and a second sliding cylinder 22 with one end open. The first sliding cylinder 21 and the second sliding cylinder 22 are fixedly connected and the open ends of the first sliding cylinder 21 and the second sliding cylinder 22 are arranged opposite to each other. The interior of the first sliding cylinder 21 and the second sliding cylinder 22 forms an installation cavity 23 for installing the elastic reset member 5.

[0051] A first groove 211 for sliding the first stop 11 is provided at the end of the first sliding cylinder 21 facing the first stop 11, and a second groove 221 for sliding the second stop 15 is provided at the end of the second sliding cylinder 22 facing the second stop 15. Both the first stop 11 and the second stop 15 have rectangular cross-sections. When the length direction of the first stop 11 is aligned with that of the first groove 211, the second stop 15 is offset from the second groove 221.

[0052] Specifically, when the length direction of the first stop block 11 is aligned with that of the first slide groove 211, the second stop block 15 is misaligned with the second slide groove 221. This misalignment can be achieved by the first stop block 11 and the second stop block 15 being misaligned in length direction while the length directions of the first slide groove 211 and the second slide groove 221 are the same; alternatively, the length directions of the first stop block 11 and the second stop block 15 can be aligned while the length directions of the first slide groove 211 and the second slide groove 221 are misaligned; or the length directions of the first stop block 11 and the second stop block 15 can be misaligned, and the length directions of the first slide groove 211 and the second slide groove 221 are also misaligned. This application uses the example of the first stop block and the second stop block 15 having the same length direction while the length directions of the first slide groove 211 and the second slide groove 221 are misaligned by 90 degrees for illustration.

[0053] When the first stop 11 is aligned with the length direction of the first slide groove 211, the hammer sleeve 2 is slid towards the direction of the first stop 11, allowing the first stop 11 to slide into the first slide groove 211. Then, the force applied to the first stop 11 is released, and under the elastic force of the elastic reset member 5, the hammer sleeve 2 slides towards the direction of the second stop 15, thus hammering the second stop 15. When the second stop 15 is aligned with the direction of the second slide groove 221, the hammer sleeve 2 is moved towards the direction of the second stop 15, allowing the second stop 15 to slide into the second slide groove 221. Then, the force applied to the hammer sleeve 2 is released, and under the elastic force of the elastic reset member 5, the hammer sleeve 2 resets to hammer the first stop 11. The hammering direction of the hammer sleeve 2 can be changed by rotating it, making operation more convenient and less strenuous.

[0054] Reference Figure 4 The elastic reset component 5 includes a fixed ring 51 fixed to the fixed rod 1, a first reset spring 52 fixed between the fixed ring 51 and the closed end of the first sliding cylinder 21, and a second reset spring 53 fixed between the fixed ring 51 and the closed end of the second sliding cylinder 22. Both the first reset spring 52 and the second reset spring 53 are sleeved on the fixed rod 1. When the hammer sleeve 2 is slid towards the first stop 11, the first reset spring 52 is compressed. When the force applied to the hammer sleeve 2 disappears, the hammer sleeve 2 resets under the elastic force of the first reset spring 52 and hammers the second stop 15. When the hammer sleeve 2 is slid towards the second stop 15, the second reset spring 53 is compressed. When the force applied to the hammer sleeve 2 disappears, the hammer sleeve 2 resets under the elastic force of the second reset spring 53 and hammers the first stop 11.

[0055] To facilitate the doctor's operation of the hammer sleeve 2, the first stop 11 can smoothly slide into the first groove 211, or the second stop 15 can smoothly slide into the second groove 221. A limiting block 54 is also fixed to the outer wall of the fixing ring 51, and a limiting groove 24 is provided in the inner wall of the mounting cavity 23 for the limiting block 54 to slide. The cooperation between the limiting block 54 and the limiting groove 24 can guide the sliding of the hammer sleeve 2, thereby limiting the circumferential position of the hammer sleeve 2.

[0056] Reference Figure 4 and Figure 5 The limiting groove 24 includes a first limiting groove 241 formed on the inner wall of the first sliding cylinder 21, a second limiting groove 242 formed on the inner wall of the second sliding cylinder 22, and a connecting groove 243 connecting the first limiting groove 241 and the second limiting groove 242. The connecting groove 243 is formed at the opening ends of both the first sliding cylinder 21 and the second sliding cylinder 22.

[0057] Under normal conditions, the limiting block 54 is located in the connecting groove 243. When the sliding limiting block 54 is located in the second limiting groove 242, the length direction of the first stop block 11 is consistent with that of the first sliding groove 211. When the rotating hammer sleeve 2 rotates, the limiting block 54 slides along the length direction of the connecting groove 243 into the first limiting groove 241. At this time, the length direction of the second stop block 15 is consistent with that of the second sliding groove 221.

[0058] Reference Figure 3 An end cap 12 is fixed to the end of the fixing rod 1 away from the mounting connector 3. The doctor can hold and fix the position of the injector through the end cap 12, making the operation more convenient.

[0059] The implementation principle of Embodiment 2 of this application is as follows: When it is necessary to insert the surgical instrument 4, the hammer sleeve 2 is rotated so that the second stop 15 is aligned with the length direction of the second slide groove 221. At this time, the limiting block 54 also slides into the first limiting groove 241 until the limiting block 54 abuts against the side wall of the first limiting groove 241. The doctor can directly operate the hammer sleeve 2 to slide in the direction of the second stop 15. At this time, the second stop 15 also slides into the second slide groove 221, and the limiting block 54 also slides into the first limiting groove 241, and the first return spring 52 is compressed. Then the force applied to the hammer sleeve 2 is released. Under the action of the elastic force of the first return spring 52, the hammer sleeve 2 slides in the direction of the first stop 11 and hammers the first stop 11. By repeating this cycle, the surgical instrument 4 can be inserted into the human body.

[0060] When it is necessary to remove the surgical instrument 4, the hammer sleeve 2 is rotated directly. At this time, the limiting block 54 slides within the connecting groove 243 until it slides from the end of the connecting groove 243 near the first limiting groove 241 to the end near the second limiting groove 242. At this point, the length direction of the first stop 11 is also aligned with the length direction of the first slide groove 211. The doctor then directly slides the hammer sleeve 2 towards the location of the first stop 11. The first stop 11 slides into the first slide groove 211, and the limiting block 54 slides within the second limiting groove 242, compressing the second return spring 53. Then, the force applied to the hammer sleeve 2 is released. Under the elastic force of the second return spring 53, the hammer sleeve 2 moves towards the location of the second stop 15 and strikes the second stop 15. This cycle is repeated to remove the surgical instrument 4. The operation is more convenient and labor-saving, further improving the ease of operation.

[0061] Understandably, the distance the hammer cylinder slides depends on the length of the first limiting groove 241 and the second limiting groove 242, or on the length of the first sliding groove 211 and the second sliding groove 221.

[0062] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A knee joint multi-functional driver characterized by: The utility model relates to a hammering sleeve (2) for surgical instrument (4) is provided, including fixed pole (1), the hammering sleeve (2) of sliding connection on fixed pole (1) and the mounting joint (3) of installation in fixed pole (1) one end, the mounting joint (3) is used for with surgical instrument (4) detachable connection, the first stopper (11) of fixed connection is located in the one side of hammering sleeve (2) towards mounting joint (3) in fixed pole (1), the second stopper (15) of fixed connection is located in the one end of fixed pole (1) away from mounting joint (3), when operating hammering sleeve (2) on fixed pole (1) sliding, hammering sleeve (2) is through hammering first stopper (11) or second stopper (15) and is used for the surgical instrument (4) of installation in mounting joint (3) to apply the hammering force of driving in or pulling out, The hammering sleeve (2) is located between the first stopper (11) and the second stopper (15), the distance between the first stopper (11) and the second stopper (15) is consistent with the length of the hammering sleeve (2), the cross section of the first stopper (11) and the second stopper (15) is rectangular, the first sliding slot (211) is opened in the end of the hammering sleeve (2) towards the first stopper (11) for the first stopper (11) to slide in, the second sliding slot (221) is opened in the end of the hammering sleeve (2) towards the second stopper (15) for the second stopper (15) to slide in, when the first stopper (11) slides into the first sliding slot (211), the second stopper (15) is arranged in dislocation with the second sliding slot (221), The elastic reset member (5) is further arranged between the fixed pole (1) and the hammering sleeve (2) to reset the hammering sleeve (2), when the force applied to the hammering sleeve (2) disappears, the hammering sleeve (2) is reset under the action of the elastic reset member (5) to hammer the first stopper (11) or the second stopper (15); The mounting cavity (23) is formed in the hammering sleeve (2) to mount the elastic reset member (5), the elastic reset member (5) comprises the fixed ring (51) fixed to the fixed pole (1), the first reset spring (52) arranged between one end of the mounting cavity (23) and the fixed ring (51), and the second reset spring (53) arranged between the other end of the mounting cavity (23) and the fixed ring (51); The end cap (12) is fixed to the end of the fixed pole (1) away from the mounting joint (3), and the end cap (12) is located on the side of the second stopper (15) away from the hammering sleeve (2); the limiting block (54) is fixed to the outer wall of the fixed ring (51), and the limiting slot (24) is opened in the inner wall of the mounting cavity (23) for the limiting block (54) to slide.

2. The knee joint multifunctional driver according to claim 1, characterized in that: The hammering sleeve (2) comprises a first sliding cylinder (21) with one end open and a second sliding cylinder (22) with one end open fixed at the open end of the first sliding cylinder (21), the first sliding cylinder (21) and the second sliding cylinder (22) are oppositely arranged, and the mounting cavity (23) is formed in the first sliding cylinder (21) and the second sliding cylinder (22).

3. The knee multi-functional driver according to claim 2, wherein: The limiting groove (24) comprises a first limiting groove (241) formed on the inner wall of the first sliding cylinder (21), a second limiting groove (242) formed on the inner wall of the second sliding cylinder (22), and a connecting groove (243) connected between the first limiting groove (241) and the second limiting groove (242), when the first stop block (11) slides in the first sliding groove (211), the limiting block (54) slides in the second limiting groove (242); when the second stop block (15) slides in the second sliding groove (221), the limiting block (54) slides in the first limiting groove (241).

4. The knee joint multifunction driver according to any one of claims 1-3, characterized in that: The mounting connector (3) comprises a mounting head (31) fixed at one end of the fixed rod (1) away from the second stop block (15), the mounting head (31) is provided with an insertion hole (311) for inserting the insertion block (41) on the surgical instrument (4), and the mounting head (31) and the fixed rod (1) are provided with a fixing member (32) for fixing the position of the insertion block (41) in the insertion hole (311).

5. The knee multi-functional driver according to claim 4, wherein: The fixed rod (1) is provided with a mounting hole (13) at one end towards the mounting head (31), the fixing member (32) comprises an insertion rod (321) slidingly connected in the mounting hole (13) and an abutting spring (322) fixed between the bottom of the mounting hole (13) and the insertion rod (321), the fixed rod (1) is slidingly connected with a sliding sleeve (323), the outer wall of the fixed rod (1) is provided with a sliding groove (14) in communication with the mounting hole (13), and the insertion rod (321) and the sliding sleeve (323) are fixedly connected with a connecting rod (324), the connecting rod (324) is slidingly assembled in the sliding groove (14).

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