A guide needle anteversion angle adjustment tool for PFNA surgery and a method of using the tool

Abstract

The present invention relates to the technical field of medical devices, and discloses a guide needle anteversion angle adjustment tool for PFNA surgery and a method of using the tool, comprising a grip, a fixed column fixedly connected to the outside of the grip, an angle adjustment mechanism fixedly connected to the outside of the fixed column, a replacement mechanism provided at one end of the angle adjustment mechanism away from the fixed column, a mounting mechanism provided at the outside of the replacement mechanism, a guide needle provided inside the mounting mechanism, the guide needle can be installed using the mounting mechanism, and the mounting mechanism can be replaced using the replacement mechanism, and the angle of the replacement mechanism and the mounting mechanism can be adjusted using the angle adjustment mechanism, so that the angle of the guide needle can be adjusted. The angle adjustment mechanism can automatically adjust the anteversion angle of the guide needle for PFNA surgery, thereby reducing direct manual intervention, thereby improving accuracy, and then reducing safety hazards in using the guide needle.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a guide needle anteversion angle adjustment tool for PFNA surgery and a method for using the tool. Background Art

[0002] During PFNA surgery, the role of the guide pin is to guide the correct insertion of the intramedullary nail and ensure that its position and direction in the femur meet the biomechanical requirements, thereby improving the success rate of the surgery and the patient's prognosis. The use of the guide pin in PFNA surgery for intertrochanteric fractures is a very critical step. PFNA is a commonly used internal fixation method for the treatment of intertrochanteric fractures. It stabilizes the fracture site by inserting an intramedullary nail into the proximal femur.

[0003] In the prior art, the anteversion angle of the guide needle for PFNA surgery is generally adjusted by the doctor. However, the accuracy of the manual adjustment of the anteversion angle of the guide needle for PFNA surgery may deviate, which poses certain safety risks. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a guide needle anteversion angle adjustment tool for PFNA surgery and a method of using the tool, which solves the problem in the prior art that the guide needle angle adjustment has certain deviations in accuracy and certain safety hazards.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a guide needle anteversion angle adjustment tool for PFNA surgery, comprising a handle, the outside of the handle is fixedly connected to a fixed column, the outside of the fixed column is fixedly connected to an angle adjustment mechanism, a replacement mechanism is provided at one end of the angle adjustment mechanism away from the fixed column, an installation mechanism is provided on the outside of the replacement mechanism, a guide needle is provided inside the installation mechanism, the guide needle can be installed using the installation mechanism, and the installation mechanism can be replaced using the replacement mechanism, and the angle of the replacement mechanism and the installation mechanism can be adjusted using the angle adjustment mechanism, thereby adjusting the angle of the guide needle.

[0006] Preferably, the angle adjustment mechanism includes a rotating base rod, one end of the rotating base rod is rotatably connected to the outside of the fixed column, the end of the rotating base rod away from the fixed column is rotatably connected to a movable column, the outside of the movable column is rotatably connected to a push-pull rod, the end of the push-pull rod away from the movable column is rotatably connected to the outside of the fixed column, the outside of the rotating base rod away from the fixed column is fixedly connected to a connecting bent rod, the end of the connecting bent rod away from the rotating base rod is rotatably connected to the push-pull column, the outside of the fixed column is rotatably connected to a micro electric telescopic rod, and the output end of the micro electric telescopic rod is rotatably connected to the outside of the rotating base rod.

[0007] Preferably, the replacement mechanism includes a rotating sleeve, a side of the rotating sleeve close to the fixed column is rotatably connected to an end of the movable column away from the fixed column, the outside of the rotating sleeve is rotatably connected to an end of the push-pull column away from the connecting bent rod, the inside of the rotating sleeve is slidably connected to a sliding column, the outside of the sliding column is fixedly connected to a mounting plate, the top outside of the rotating sleeve is fixedly connected to a mounting cylinder, the inside of the mounting cylinder is slidably connected to a sliding disk, the middle of the sliding disk is fixedly connected to an insertion rod, a reset spring is provided inside the mounting cylinder, a card hole is opened inside the outer wall of the sliding column, and the bottom of the insertion rod is engaged with the card hole.

[0008] Preferably, the mounting mechanism includes a fixed cylinder, the outside of the fixed cylinder is fixedly connected to the side of the mounting plate away from the sliding column, the inside of the fixed cylinder is provided with a clamping spring, the inside of the fixed cylinder is slidably connected to a sliding ring, the outside of the fixed cylinder is fixedly connected to a mounting ring, the outside of the mounting ring is rotatably connected to a plurality of clamping arms, the side of the clamping arm close to the fixed cylinder is fixedly connected to a spring sheet, the side of the spring sheet close to the fixed cylinder is fixedly connected to the outside of the mounting ring, the inside of the fixed cylinder is slidably connected to a resist tube, the outside of the resist tube is fixedly connected to a sleeve, the outside of the sleeve is fixedly connected to a clamping ring, the guide needle is fixedly connected to one end of the resist tube away from the replacement mechanism, one end of the clamping spring is fixedly connected to the inside of the fixed cylinder, and the other end of the clamping spring is fixedly connected to the inner side of the sliding ring.

[0009] Preferably, a pull ring is fixedly connected to the top of the insertion rod, and the insertion rod passes through the middle part of the installation tube.

[0010] Preferably, one end of the return spring is fixedly connected to the inside of the mounting tube, and the other end of the return spring is fixedly connected to one end of the sliding disk close to the pull ring.

[0011] Preferably, the outside of the insertion rod passes through the inside of the rotating sleeve, and the return spring is sleeved on the outside of the insertion rod.

[0012] Preferably, one end of the fixing tube close to the guide needle is arranged between the inner side of the sleeve and the outer side of the abutment tube, and the clamping arm is clamped with the clamping ring.

[0013] Preferably, the outer sleeve of the handle is provided with an anti-slip sleeve, and the outer portion of the mounting plate is slidably connected to the inner portion of the rotating sleeve.

[0014] A method for using a guide needle anteversion angle adjustment tool for PFNA surgery comprises the following steps: Step 1: Start the micro electric telescopic rod. After the output end of the micro electric telescopic rod is extended, it can drive the rotating base rod to rotate. At this time, the movable column can rotate under the pull of the push-pull rod, and the replacement mechanism rotates under the pull of the push-pull column, so that the angle of the replacement mechanism can be adjusted, and then the angle of the installation mechanism can be adjusted, so the angle of the guide needle can be adjusted; Step 2: When disassembling the installation mechanism, just pull the pull ring upwards, so as to drive the insertion rod to move out of the inside of the clamping hole, so as to pull the sliding column out of the inside of the rotating sleeve, and then facilitate the disassembly of the installation mechanism; Step 3: When removing the guide needle, just rotate the tail of the clamp arm toward the middle to release the engagement between the head of the clamp arm and the clamp ring, and then remove the guide needle from the installation mechanism.

[0015] The present invention provides a guide needle anteversion angle adjustment tool for PFNA surgery and a method for using the tool. The tool has the following beneficial effects: 1. The present invention can automatically adjust the anteversion angle of the guide needle used in PFNA surgery through the angle adjustment mechanism, thereby reducing direct manual intervention, thereby improving accuracy and further reducing safety hazards in the use of the guide needle.

[0016] 2. Since the present invention can automatically adjust the angle of the guide needle, it is more convenient to use the guide needle. Even if you are inexperienced, you can use it, which can lower the threshold for using the guide needle. The installation mechanism can be used to quickly replace the guide needle without delaying its use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a structural schematic diagram of the rotating sleeve in the present invention; Figure 3 It is a schematic diagram of the structure of the fixed cylinder in the present invention; Figure 4 It is a structural schematic diagram of the clamping hole in the present invention; Figure 5 It is a schematic diagram of the structure of the sliding ring in the present invention; Figure 6 It is a structural schematic diagram of the clamp ring in the present invention; Figure 7 It is a structural schematic diagram of the sleeve in the present invention; Figure 8 The three-dimensional Figure 2 .

[0018] Among them, 1. handle; 2. fixed column; 3. angle adjustment mechanism; 301. rotating base rod; 302. movable column; 303. push-pull rod; 304. micro electric telescopic rod; 305. connecting bent rod; 306. push-pull column; 4. replacement mechanism; 401. rotating sleeve; 402. sliding column; 403. mounting plate; 404. mounting cylinder; 405. sliding disk; 406. insertion rod; 407. reset spring; 408. pull ring; 409. clamping hole; 5. mounting mechanism; 501. fixed cylinder; 502. tightening spring; 503. sliding ring; 504. mounting ring; 505. clamping arm; 506. spring piece; 507. push tube; 508. sleeve; 509. clamping ring; 6. guide needle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides a guide needle anteversion angle adjustment tool for PFNA surgery, including a handle 1, a fixed column 2 is fixedly connected to the outside of the handle 1, the fixed column 2 can provide an installation position, the fixed column 2 is fixedly connected to the outside of the fixed column 2, the angle adjustment mechanism 3 can play a role in adjusting the angle, a replacement mechanism 4 is arranged at one end of the angle adjustment mechanism 3 away from the fixed column 2, a mounting mechanism 5 is arranged on the outside of the replacement mechanism 4, a guide needle 6 is arranged inside the mounting mechanism 5, the guide needle 6 can be installed by using the mounting mechanism 5, the mounting mechanism 5 can facilitate the replacement of the guide needle 6, and the mounting mechanism 5 can be replaced by using the replacement mechanism 4, and the angle of the replacement mechanism 4 and the mounting mechanism 5 can be adjusted by using the angle adjustment mechanism 3, so that the angle of the guide needle 6 can be adjusted.

[0021] The angle adjustment mechanism 3 includes a rotating base rod 301, which provides an installation foundation. One end of the rotating base rod 301 is rotatably connected to the outside of the fixed column 2. The end of the rotating base rod 301 away from the fixed column 2 is rotatably connected to the movable column 302. The outside of the movable column 302 is rotatably connected to a push-pull rod 303, and the push-pull rod 303 can pull the movable column 302 to rotate. The end of the push-pull rod 303 away from the movable column 302 is rotatably connected to the outside of the fixed column 2. The end of the outside of the rotating base rod 301 away from the fixed column 2 is fixedly connected to a connecting bent rod 305, and the connecting bent rod 305 can provide an installation position. The end of the connecting bent rod 305 away from the rotating base rod 301 is rotatably connected to a push-pull column 306, and the push-pull column 306 can pull the replacement mechanism 4 to rotate. The outside of the fixed column 2 is rotatably connected to a micro-electric telescopic rod 304, and the micro-electric telescopic rod 304 can provide rotation The power for the rotation of the rotating base rod 301 is that the output end of the micro electric telescopic rod 304 is rotatably connected to the outside of the rotating base rod 301, and the micro electric telescopic rod 304 is started, and the output end of the micro electric telescopic rod 304 extends, thereby driving the rotating base rod 301 to rotate in the direction away from the handle 1. After the rotating base rod 301 rotates, the push-pull rod 303 will push the movable column 302 to rotate in the direction close to the handle 1. When the movable column 302 rotates, the push-pull column 306 can be used to push the replacement mechanism 4 to rotate in the direction away from the handle 1, so that the angle of the replacement mechanism 4 can be adjusted. After the angle of the replacement mechanism 4 is adjusted, the angle of the installation mechanism 5 can be adjusted. After the angle of the installation mechanism 5 is adjusted, the angle of the guide needle 6 can be adjusted. Therefore, the angle of the guide needle 6 can be automatically adjusted, and the accuracy of the forward tilt angle of the guide needle 6 can be improved due to automatic control.

[0022] The replacement mechanism 4 includes a rotating sleeve 401, which can provide an installation position. The side of the rotating sleeve 401 close to the fixed column 2 is rotatably connected to the end of the movable column 302 away from the fixed column 2. The outside of the rotating sleeve 401 is rotatably connected to the end of the push-pull column 306 away from the connecting bent rod 305. The inside of the rotating sleeve 401 is slidably connected to the sliding column 402. The outside of the sliding column 402 is fixedly connected to the mounting plate 403. The mounting plate 403 can provide an installation position. The top of the rotating sleeve 401 is fixedly connected to the outside. The mounting cylinder 404 provides an installation position. The inside of the mounting cylinder 404 The sliding connection is provided with a sliding plate 405, which serves as a limiter. The middle of the sliding plate 405 is fixedly connected with a plug rod 406. A return spring 407 is arranged inside the mounting tube 404. A clamping hole 409 is provided inside the outer wall of the sliding column 402. The bottom of the plug rod 406 is engaged with the clamping hole 409. A pull ring 408 is fixedly connected to the top of the plug rod 406. The plug rod 406 passes through the middle of the mounting tube 404. One end of the return spring 407 is fixedly connected to the inside of the mounting tube 404. The other end of the return spring 407 is fixedly connected to one end of the sliding plate 405 near the pull ring 408. The outside of 06 passes through the inside of the rotating sleeve 401, the reset spring 407 is sleeved on the outside of the insertion rod 406, the outside of the grip 1 is sleeved with an anti-slip sleeve, and the outside of the mounting plate 403 is slidably connected to the inside of the rotating sleeve 401. When replacing the mounting mechanism 5, the pull ring 408 can be pulled upward, so that the pull ring 408 can be used to pull the insertion rod 406 to move upward. After the insertion rod 406 moves upward, it can drive the sliding plate 405 to move upward. The sliding plate 405 moves upward to compress the reset spring 407, and at the same time, after the insertion rod 406 moves out of the inside of the card hole 409, the sliding column 402 can be Move it out of the interior of the rotating sleeve 401, and then the installation mechanism 5 can be replaced. When installing the installation mechanism 5, align the sliding column 402 with the interior of the rotating sleeve 401, and slide the sliding column 402 into the interior of the rotating sleeve 401. At this time, release the pull ring 408, and under the action of the reset spring 407, it can use its own elastic force to push the sliding plate 405 downward, and then drive the insertion rod 406 to move downward, and then the insertion rod 406 can be engaged with the card hole 409, so that the sliding column 402 can be installed in the interior of the rotating sleeve 401, and then the installation mechanism 5 can be installed.

[0023] The mounting mechanism 5 includes a fixed cylinder 501, which provides a mounting position. The outside of the fixed cylinder 501 is fixedly connected to a side of the mounting plate 403 away from the sliding column 402. A tightening spring 502 is arranged inside the fixed cylinder 501. The inside of the fixed cylinder 501 is slidably connected to a sliding ring 503. The outside of the fixed cylinder 501 is fixedly connected to a mounting ring 504. The mounting ring 504 provides a mounting position. The outside of the mounting ring 504 is rotatably connected to a plurality of clamping arms 505. A spring 506 is fixedly connected to a side of the clamping arm 505 close to the fixed cylinder 501. The spring 506 can realize the rotational reset of the clamping arm 505. The side of the spring 506 close to the fixed cylinder 501 is fixedly connected to the outside of the mounting ring 504. The interior of the fixed cylinder 501 is slidably connected with a push tube 507, which can slide inside the fixed cylinder 501 to compress the push spring 502. The exterior of the push tube 507 is fixedly connected with a sleeve 508, which can provide an installation position. The exterior of the sleeve 508 is fixedly connected with a snap ring 509, which can engage with the clamping arm 505 to achieve the installation of the sleeve 508. The guide needle 6 is fixedly connected to the end of the push tube 507 away from the replacement mechanism 4. One end of the push spring 502 is fixedly connected to the interior of the fixed cylinder 501, and the other end of the push spring 502 is fixedly connected to the inner side of the sliding ring 503. The end of the fixed cylinder 501 close to the guide needle 6 is arranged on the sleeve 50 8 and the outside of the abutment tube 507, the clamp arm 505 is engaged with the clamp ring 509. When installing the guide needle 6, first press the tail of the clamp arm 505 toward the middle, and then the spring sheet 506 can be compressed. When the tail of the clamp arm 505 rotates toward the middle, the head of the clamp arm 505 opens outward, and then the clamp arm 505 and the clamp ring 509 can be released. At this time, the sleeve 508 can be pulled out from the outside of the fixed cylinder 501, and the abutment tube 507 moves out of the inside of the fixed cylinder 501. At this time, the guide needle 6 is removed from the inside of the fixed cylinder 501. When installing the guide needle 6, align the abutment tube 507 with the inside of the fixed cylinder 501 and slide the abutment tube 507 into the fixed cylinder 501. The inside of the clamp 509 is formed by squeezing the sliding ring 503 with the support tube 507, so that the sliding ring 503 can be used to compress the holding spring 502, and because the side of the clamp 509 close to the clamp arm 505 is an inclined surface, the head of the clamp arm 505 can be squeezed and opened. When the vertical surface of the clamp 509 moves to the inside of the clamp arm 505, the tail of the clamp arm 505 can be unfolded outwardly under the elastic action of the spring piece 506. At this time, the clamp arm 505 can be rotated toward the middle, thereby realizing the engagement between the clamp 509 and the clamp arm 505, and because the elastic action of the holding spring 502 can give a thrust to the sliding ring 503, and then a thrust to the support tube 507, thereby realizing the installation of the guide needle 6.

[0024] A method for using a guide needle anteversion angle adjustment tool for PFNA surgery comprises the following steps: Step 1: Start the micro electric telescopic rod 304. After the output end of the micro electric telescopic rod 304 is extended, it can drive the rotating base rod 301 to rotate. At this time, the movable column 302 can rotate under the pull of the push-pull rod 303, and the replacement mechanism 4 rotates under the pull of the push-pull column 306, so that the angle of the replacement mechanism 4 can be adjusted, and then the angle of the installation mechanism 5 can be adjusted, so the angle of the guide needle 6 can be adjusted; Step 2: When disassembling the installation mechanism 5, it is only necessary to pull the pull ring 408 upwards, so as to drive the insertion rod 406 to move out of the inside of the clamping hole 409, so as to pull the sliding column 402 out of the inside of the rotating sleeve 401, and then the installation mechanism 5 can be easily disassembled; Step 3: When removing the guide needle 6 , it is only necessary to rotate the tail of the clamp arm 505 toward the middle, so as to release the engagement between the head of the clamp arm 505 and the clamp ring 509 , and then the guide needle 6 can be removed from the mounting mechanism 5 .

[0025] Working principle: start the micro electric telescopic rod 304, the output end of the micro electric telescopic rod 304 extends, thereby driving the rotating base rod 301 to rotate in the direction away from the grip 1, and after the rotating base rod 301 rotates, the push-pull rod 303 will push the movable column 302 to rotate in the direction close to the grip 1, and when the movable column 302 rotates, the push-pull column 306 can be used to push the replacement mechanism 4 to rotate in the direction away from the grip 1, so that the angle of the replacement mechanism 4 can be adjusted, and after the angle of the replacement mechanism 4 is adjusted, the angle of the installation mechanism 5 can be adjusted, and after the angle of the installation mechanism 5 is adjusted, the angle of the guide needle 6 can be adjusted, so that the angle of the guide needle 6 can be automatically adjusted, and the automatic control can improve the accuracy of the forward tilt angle of the guide needle 6; When replacing the installation mechanism 5, the pull ring 408 can be pulled upward, so that the pull ring 408 can be used to pull the insertion rod 406 to move upward. After the insertion rod 406 moves upward, it can drive the sliding plate 405 to move upward. The sliding plate 405 moves upward to compress the return spring 407. At the same time, after the insertion rod 406 moves out of the clamping hole 409, the sliding column 402 can be moved out of the rotating sleeve 401. At this time, the installation mechanism 5 can be replaced. When installing the installation mechanism 5, the sliding column 402 is aligned with the interior of the rotating sleeve 401, and the sliding column 402 slides into the interior of the rotating sleeve 401. At this time, the pull ring 408 is released, and under the action of the return spring 407, the sliding plate 405 can be pushed downward by its own elastic force, and then the insertion rod 406 can be driven to move downward, and then the insertion rod 406 can be engaged with the clamping hole 409, so that the sliding column 402 can be installed in the rotating sleeve 401, and then the installation mechanism 5 can be installed. When installing the guide needle 6, first press the tail of the clamp arm 505 toward the middle, and then the spring sheet 506 can be compressed. When the tail of the clamp arm 505 rotates toward the middle, the head of the clamp arm 505 opens outward, and then the clamp arm 505 and the clamp ring 509 can be released. At this time, the sleeve 508 can be pulled out from the outside of the fixed cylinder 501. At this time, the push tube 507 moves out of the interior of the fixed cylinder 501, and the guide needle 6 is removed from the interior of the fixed cylinder 501. When installing the guide needle 6, align the push tube 507 with the interior of the fixed cylinder 501, and slide the push tube 507 into the interior of the fixed cylinder 501. At this time, the push tube 507 is used to squeeze The sliding ring 503 can be used to compress the pressing spring 502, and because the side of the clamping ring 509 close to the clamping arm 505 is an inclined surface, the head of the clamping arm 505 can be squeezed and opened. When the vertical surface of the clamping ring 509 moves to the inner side of the clamping arm 505, the tail of the clamping arm 505 can be unfolded outward under the elastic action of the spring 506. At this time, the clamping arm 505 can be rotated toward the middle, thereby realizing the engagement between the clamping ring 509 and the clamping arm 505, and because the elastic action of the pressing spring 502 can give a thrust to the sliding ring 503, and then give a thrust to the pressing tube 507, thereby realizing the installation of the guide needle 6.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A guide needle anteversion angle adjustment tool for PFNA surgery, comprising a handle (1), characterized in that: The outside of the handle (1) is fixedly connected to a fixing column (2), the outside of the fixing column (2) is fixedly connected to an angle adjustment mechanism (3), a replacement mechanism (4) is provided at one end of the angle adjustment mechanism (3) away from the fixing column (2), a mounting mechanism (5) is provided outside the replacement mechanism (4), a guide needle (6) is provided inside the mounting mechanism (5), the guide needle (6) can be installed using the mounting mechanism (5), and the mounting mechanism (5) can be replaced using the replacement mechanism (4), and the angle of the replacement mechanism (4) and the mounting mechanism (5) can be adjusted using the angle adjustment mechanism (3), thereby adjusting the angle of the guide needle (6).

2. A guide needle anteversion angle adjustment tool for PFNA according to claim 1, characterized in that: The angle adjustment mechanism (3) comprises a rotating base rod (301), one end of the rotating base rod (301) being rotatably connected to the outside of the fixed column (2), one end of the rotating base rod (301) away from the fixed column (2) being rotatably connected to a movable column (302), the outside of the movable column (302) being rotatably connected to a push-pull rod (303), one end of the push-pull rod (303) away from the movable column (302) being rotatably connected to the outside of the fixed column (2), one end of the rotating base rod (301) away from the fixed column (2) being fixedly connected to a connecting bent rod (305), one end of the connecting bent rod (305) away from the rotating base rod (301) being rotatably connected to a push-pull column (306), the outside of the fixed column (2) being rotatably connected to a micro electric telescopic rod (304), and the output end of the micro electric telescopic rod (304) being rotatably connected to the outside of the rotating base rod (301).

3. A guide needle anteversion angle adjustment tool for PFNA according to claim 2, characterized in that: The replacement mechanism (4) comprises a rotating sleeve (401), wherein a side of the rotating sleeve (401) close to the fixed column (2) is rotationally connected to an end of the movable column (302) away from the fixed column (2), the outside of the rotating sleeve (401) is rotationally connected to an end of the push-pull column (306) away from the connecting bent rod (305), the inside of the rotating sleeve (401) is slidably connected to a sliding column (402), the outside of the sliding column (402) is fixedly connected to a mounting plate (403), the top of the rotating sleeve (401) is fixedly connected to a mounting cylinder (404), the inside of the mounting cylinder (404) is slidably connected to a sliding disk (405), the middle of the sliding disk (405) is fixedly connected to an insertion rod (406), a reset spring (407) is arranged inside the mounting cylinder (404), a clamping hole (409) is opened inside the outer wall of the sliding column (402), and the bottom of the insertion rod (406) is engaged with the clamping hole (409).

4. A guide needle anteversion angle adjustment tool for PFNA according to claim 3, characterized in that: The mounting mechanism (5) comprises a fixing cylinder (501), the outside of the fixing cylinder (501) being fixedly connected to a side of the mounting plate (403) away from the sliding column (402), the inside of the fixing cylinder (501) being provided with a pressing spring (502), the inside of the fixing cylinder (501) being slidably connected to a sliding ring (503), the outside of the fixing cylinder (501) being fixedly connected to a mounting ring (504), the outside of the mounting ring (504) being rotatably connected to a plurality of clamping arms (505), the side of the clamping arms (505) close to the fixing cylinder (501) being fixedly connected to a spring sheet (506), the spring sheet (506) being fixedly connected to a side of the fixing cylinder (501 ... 06) A side close to the fixed tube (501) is fixedly connected to the outside of the mounting ring (504), the fixed tube (501) is slidably connected to the inside of the fixed tube (507), the outside of the anti-tube (507) is fixedly connected to a sleeve (508), the outside of the sleeve (508) is fixedly connected to a retaining ring (509), the guide needle (6) is fixedly connected to the end of the anti-tube (507) away from the replacement mechanism (4), one end of the retaining spring (502) is fixedly connected to the inside of the fixed tube (501), and the other end of the retaining spring (502) is fixedly connected to the inner side of the sliding ring (503).

5. A guide needle anteversion angle adjustment tool for PFNA according to claim 3, characterized in that: A pull ring (408) is fixedly connected to the top of the insertion rod (406), and the insertion rod (406) passes through the middle of the installation tube (404).

6. A guide needle anteversion angle adjustment tool for PFNA according to claim 3, characterized in that: One end of the return spring (407) is fixedly connected to the interior of the mounting tube (404), and the other end of the return spring (407) is fixedly connected to one end of the sliding disk (405) close to the pull ring (408).

7. A guide needle anteversion angle adjustment tool for PFNA according to claim 3, characterized in that: The outside of the insertion rod (406) passes through the inside of the rotating sleeve (401), and the return spring (407) is sleeved on the outside of the insertion rod (406).

8. The guide needle anteversion angle adjustment tool for PFNA according to claim 4, characterized in that: One end of the fixing tube (501) close to the guide needle (6) is arranged between the inner side of the sleeve (508) and the outer side of the abutment tube (507), and the clamping arm (505) is clamped with the clamping ring (509).

9. The guide needle anteversion angle adjustment tool for PFNA according to claim 3, characterized in that: The outer sleeve of the handle (1) is provided with an anti-slip sleeve, and the outer portion of the mounting plate (403) is slidably connected to the inner portion of the rotating sleeve (401).

10. A method for using a guide needle anteversion angle adjustment tool for PFNA surgery, according to the guide needle anteversion angle adjustment tool for PFNA surgery according to claims 1-9, characterized in that: The following steps are involved: Step 1: Start the micro electric telescopic rod (304). After the output end of the micro electric telescopic rod (304) is extended, it can drive the rotating base rod (301) to rotate. At this time, the movable column (302) can rotate under the pull of the push-pull rod (303), and the replacement mechanism (4) rotates under the pull of the push-pull column (306), so that the angle of the replacement mechanism (4) can be adjusted, and then the angle of the installation mechanism (5) can be adjusted, so that the angle of the guide needle (6) can be adjusted; Step 2: When disassembling the installation mechanism (5), it is only necessary to pull the pull ring (408) upwards, thereby driving the insertion rod (406) to move out of the inside of the clamping hole (409), so that the sliding column (402) can be pulled out from the inside of the rotating sleeve (401), thereby facilitating the disassembly of the installation mechanism (5); Step 3: When removing the guide needle (6), it is only necessary to rotate the tail of the clamping arm (505) toward the middle, so as to release the engagement between the head of the clamping arm (505) and the clamping ring (509), and then the guide needle (6) can be removed from the mounting mechanism (5).

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