Mallet finger surgery assistive device

Abstract

The present invention relates to a surgical auxiliary instrument for a hammer finger, comprising a wearing part fixed on the finger, the wearing part having a fixing part extending along one side of the finger surface to the fingertip position, the fixing part corresponding to the fingertip position is provided with a needle guide, the needle guide comprises a base and a needle guide cylinder arranged on the base, the needle guide cylinder forms at least two needle guide paths located on the same plane and matched at an angle, so as to achieve puncture guidance of the guide needle, reduce the difficulty of the operation, and improve the operation effect.

Description

Technical Field

[0001] The invention relates to a surgical instrument, in particular to a medical auxiliary instrument used for surgical operation on phalanx fracture of a mallet finger. Background Art

[0002] Mallet finger is caused by the violent flexion of the finger, which causes the tearing of the insertion point of the extensor tendon or the avulsion fracture of the attachment of the extensor tendon of the distal phalanx, resulting in flexion deformity of the distal phalanx of the finger, and cannot be actively straightened. According to the type of injury, it is clinically divided into skeletal mallet finger (avulsion fracture of the distal end of the extensor tendon together with the base of the distal phalanx) and tendinous mallet finger (simple rupture of the extensor tendon end). Surgical treatment is an important means of treating mallet finger. For the tearing of the insertion point of the extensor tendon or the tearing of the tendon with a small fracture fragment, the operation uses a Kirschner wire to be inserted obliquely into the phalanx to fix the phalanx joint, two small holes are drilled at the base of the distal phalanx on both sides of the bone fragment, and the surgical fixation thread is passed through the small holes and across the insertion point of the extensor tendon to fix the bone fragment, and the two ends of the surgical fixation thread pass through the finger surface, and the two free ends of the surgical fixation thread pass through the finger surface and are tied to the Kirschner wire, so as to achieve the reduction of the fracture fragment under the traction of the surgical thread.

[0003] However, the existing surgical process has the following problems: 1. During the operation, a guide needle is used to puncture the finger surface, and then the surgical fixation thread is fixed on the guide needle to guide the surgical fixation thread. After two punctures and guidance, the two ends of the surgical fixation thread are passed through the finger surface. Therefore, the puncture path of the guide needle determines the direction of the surgical fixation thread in the tissue inside the finger, but the puncture of the guide needle relies on the operator's experience and blind puncture, and it is difficult to ensure that the two puncture paths are parallel, which causes the two traction sections of the surgical fixation thread to be non-parallel, thereby affecting the fixation of the surgical thread and the traction effect on the fracture, affecting the surgical effect.

[0004] 2. The surgical fixation thread is tied and fixed on the Kirschner wire. The traction force of the surgical fixation thread is inconvenient to control. The surgical situation depends more on the experience of the operator, resulting in uncertainty in the surgical effect and difficulty in operation. Summary of the invention

[0005] Purpose of the invention: To overcome the defects of the prior art, the present invention provides a hammer finger surgical auxiliary instrument for guiding the puncture of a guide needle, thereby reducing the difficulty of the operation and improving the effect of the operation.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A surgical auxiliary instrument for a hammer finger comprises a wearing portion which is sleeved and fixed on the finger, the wearing portion having a fixing portion which extends along one side of the finger surface to the fingertip position, the fixing portion being provided with a needle guide at the fingertip position corresponding to the fixing portion, the needle guide comprising a base and a needle guide cylinder arranged on the base, the needle guide cylinder forming at least two needle guide paths which are located on the same plane and matched at an angle.

[0008] By adopting the above technical solution, wearable fixation is achieved, which is convenient and can realize the puncture guidance of the guide needle. The two guide needle paths ensure that the two puncture paths of the guide needle are located on the same plane, thereby ensuring that the exit sections of the surgical fixation thread intersect, facilitating the fixation of the surgical fixation thread, and ensuring that the surgical fixation thread can reliably traction and reduce the fracture.

[0009] Preferably, the base is provided with a syringe seat, and the syringe seat is provided with two needle guide cylinders, and the two needle guide cylinders respectively constitute a needle guide path. Under this structural design, the structure is simple.

[0010] Preferably, the needle cylinder seat is detachably mounted on the base. With this structural design, it is convenient to replace the needle guide cylinder to match different specification requirements.

[0011] Preferably, the base is detachably mounted on the fixing part, and the fixing part is detachably mounted with a wire fixer, the wire fixer includes a traction and pressurizing device, the traction and pressurizing device includes a wire seat, a U-shaped wire threading channel is provided on the wire seat, the U-shaped wire threading channel includes an inlet hole section facing the finger surface, an intermediate hole section extending in the direction of palm thickness and an outlet hole section extending in the direction of finger length, the wire seat is provided with a wire fixing traction mechanism corresponding to the outlet hole section, the wire fixing traction mechanism includes a wire fixing seat and a traction force adjustment component for driving the wire fixing seat to move along the traction direction of the surgical fixation wire, a traction force indicating mechanism is provided on the intermediate hole section, the traction force indicating mechanism includes a traction force indicating slider and a supporting spring, one end of the traction force indicating slider is a wire positioning head corresponding to the intermediate hole section and supporting the surgical fixation wire, an indicating scale is provided on the end of the traction force indicating slider facing the finger surface, the traction force indicating slider is floatingly supported on the wire seat through the supporting spring, and the wire positioning end of the traction force indicating slider driven by the supporting spring extends into the intermediate hole section. Under this structural design, the wire entry hole section of the U-shaped threading channel is designed to face the finger surface, which is convenient for the introduction of the surgical fixation thread. The surgical fixation thread is guided through the U-shaped threading channel, which is convenient for the parallel strand guidance of the surgical fixation thread. The surgical fixation thread is supported by a traction force indicating slider, and the traction force indicating slider is supported by a supporting spring to realize traction force feedback of the surgical fixation thread, so that the traction force can be indicated in the initial stage. After the surgical fixation thread is fixed, the operator can adjust the traction force according to the actual fracture block reduction situation to ensure reliable fracture block reduction and facilitate more precise control of the traction force.

[0012] Preferably, the traction force adjustment assembly includes an adjustment screw and a nut block, the adjustment screw and the nut block are threadedly matched, the fixing part includes two parallel fixed arms, a gap is formed between the fixed arms, the wire seat is protruded on one side facing the finger surface and is provided with a nut block guide seat extending into the gap, the nut block guide seat has a nut guide hole cavity, the nut guide hole cavity is correspondingly connected to the outlet hole section, the nut block is linearly positioned and slidably matched in the nut guide hole cavity, the adjustment screw is positioned and rotated to match the nut block guide seat, the adjustment screw has an adjustment end placed in the gap, and the wire seat is fixed on the nut block. Under this structural design, the rotation of the adjustment screw realizes the linear movement of the nut, thereby realizing the traction of the surgical fixing wire, and achieving the traction force adjustment of the surgical fixing wire. The adjustment operation is simple and reliable, and the linear movement of the adjustment nut is used to realize the control of the traction force. During the adjustment process, the surgical fixing wire that is twisted will not twist and affect the traction force, making the traction force control more accurate and reliable; in addition, the fixing part adopts a two-arm design, and the wire seat protrudes the nut block guide seat toward the gap between the two arms, which has the advantage of compact structure.

[0013] Preferably, the end connecting the inlet hole section and the middle hole section is a through hole penetrating the wire seat, the middle hole section is slot-shaped, the inlet of the outlet hole section is penetrating the wire seat, and the side of the wire seat facing away from the fingertips is covered with a protective cover. Under this structural design, the threading operation of the surgical fixation thread is convenient, and the protective cover is covered on the back of the wire seat after the threading operation is completed to achieve a protective effect.

[0014] Preferably, the wire fixer also includes a positioning box, the wire holder is adjustable in position and arranged on the positioning box, the positioning box is detachably mounted on the fixed part, so that the wire fixer can be detachably mounted on the fixed part, a flat positioning cavity is provided in the positioning box, which is flat along the length of the finger, the wire holder is flat, and the flat wire holder is positioned in the positioning box along the length of the finger, and the wire holder is adjustable in position along the palm thickness direction and along the finger width direction in the flat positioning cavity. Under this structural design, as the position of the wire holder is moved and adjusted, the traction direction of the fracture position by the surgical fixation wire is adjusted, so that the reduction of the fracture fragment is more reliable and the patient's rehabilitation effect is improved.

[0015] Preferably, strip-shaped transverse guide grooves are provided on the top and bottom surfaces of the positioning box, extending in the direction of the corresponding finger width. The sliding guide in the transverse guide groove of the positioning box is matched with a transverse guide block, and the transverse guide block located on the top surface of the positioning box is matched with a longitudinal adjustment bolt for positioning and rotation. The wire seat is provided with a longitudinal threaded hole corresponding to the longitudinal adjustment bolt, and the longitudinal adjustment bolt is screwed on the longitudinal threaded hole. A guide rod is provided on the transverse guide block located on the bottom surface of the positioning box, and a guide hole matched with the guide rod guide is provided on the wire seat. The back side of the positioning box away from the fingertips has two relatively arranged guide convex plates, and the guide convex plates are provided with longitudinal guide grooves, and the sliding guide in the longitudinal guide groove is matched with a longitudinal guide block, and the longitudinal guide block is matched with an adjusting screw for positioning and rotation. The back side of the wire seat away from the fingertips has a nut protrusion, and the adjusting screw thread is matched with the nut protrusion. Under this structural design, the position of the wire seat is adjusted by positioning and rotating the longitudinal adjustment bolt and the transverse adjustment bolt, which has the advantages of simple adjustment operation and compact structure. In addition, the structural design of transverse adjustment and longitudinal adjustment effectively takes into account the design space requirements of the U-shaped threading hole, and has the advantages of compact structure and reliable movement of the wire seat position adjustment.

[0016] Preferably, the fixed part is provided with two plug connectors, the base is provided with a plug socket that is plugged in and matched with the plug connectors one by one, the base is provided with two U-shaped locking blocks that are arranged opposite to each other, the U-shaped locking blocks are matched with the plug sockets one by one, the U-shaped locking blocks are slidably matched on the base, one free end of the U-shaped locking block is provided with a lock head that can be inserted into the plug socket, the other free end of the U-shaped locking block is a press-to-unlock end, the press-to-unlock end is exposed on the side wall of the base in the corresponding finger width direction, a locking spring that drives the lock head to extend into the plug socket is provided between the two U-shaped locking blocks, and a locking groove that is matched with the lock head is provided on the plug connector. Under this structural design, the base and the fixed part are matched by plugging, and locking and unlocking are achieved through the corresponding locking structure, and the locking structure has the advantages of simple and compact structure and simple and convenient operation.

[0017] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention when the auxiliary instrument for hammer finger surgery is equipped with a needle guide;

[0019] Figure 2 An exploded view of a hammer finger surgical assistant device equipped with a needle guide according to a specific embodiment of the present invention;

[0020] Figure 3 This is an exploded view of a specific embodiment 1 of the needle guide of the present invention;

[0021] Figure 4This is a structural schematic diagram of a hammer finger surgical auxiliary instrument equipped with a wire fixer according to a specific embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a wire fixer according to a specific embodiment of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the wire fixer of a specific embodiment of the present invention when the protective cover is removed;

[0024] Figure 7 This is a schematic structural diagram of a traction and pressurizing device according to a specific embodiment of the present invention;

[0025] Figure 8 for Figure 7 The cross-sectional view taken along line AA;

[0026] Fig. 9 for Figure 7 A cross-sectional view taken along line BB;

[0027] Fig.10 It is an exploded view of the assembly structure of the needle guide cylinder of the specific embodiment 2 of the needle guide device of the present invention;

[0028] Fig.11 It is a structural schematic diagram of a second specific embodiment of the present invention. DETAILED DESCRIPTION

[0029] See attached Figures 1 to 11 The present invention discloses a surgical auxiliary instrument for a hammer finger, comprising a wearing part 1 fixed on a finger I, the wearing part 1 adopts a sleeve with an opening on one side, the opening side of the sleeve is provided with a buckle, the wearing part 1 has a fixing part 11 extending along one side of the finger surface I-2 to the position of the fingertip I-1, the wearing part 1 can be made of plastic, and the fixing part 11 is made of metal, so as to facilitate wearing and take into account structural strength, the fixing part 11 is provided with a needle guide 2 corresponding to the fingertip position, the needle guide 2 comprises a base 21 and a needle guide cylinder 22 arranged on the base 21, the needle guide cylinder 22 forms at least two needle guide paths located on the same plane and matched at an angle. Wearable fixation is convenient for fixation, and the puncture guidance of the guide needle is realized. The two needle guide paths ensure that the two puncture paths of the guide needle are located on the same plane and matched at an angle, so as to ensure that the passing sections of the surgical fixation thread intersect, which is convenient for the fixation of the surgical fixation thread and ensures that the surgical fixation thread can reliably traction and reset the fracture site.

[0030] like Figures 1 to 3 As shown, two needle guide cylinders 22 are provided on the base 21, and the two needle guide cylinders 22 respectively form a needle guide path. Of course, as another feasible embodiment of the present invention, Fig.10 and Fig.11As shown, a single needle guide cylinder 22 design can be adopted, and a syringe seat 23 is linearly slidably matched with the base 21 along the finger width direction, and a single needle guide cylinder 22 is horizontally positioned and rotated on the syringe seat 23, and at least two needle guide paths are formed by sliding the syringe seat 23 and rotating the needle guide cylinder 22. The syringe seat 23 can be detachably mounted on the base 21. It is convenient to replace the needle guide cylinder 22 to match different specifications. Figures 1 to 3 As shown, the syringe seat adopts the positioning groove and screw locking method to achieve detachable installation. Fig.10 and Fig.11 As shown, the syringe seat adopts a dovetail groove and a limiting bolt to achieve detachable installation.

[0031] The base 21 is detachably mounted on the fixing part 11, and the fixing part 11 is detachably mounted with a wire fixer 3, the wire fixer 3 includes a traction and pressurizing device, the traction and pressurizing device includes a wire seat 31, the wire seat 31 is provided with a U-shaped threading channel 311, the U-shaped threading channel 311 includes an inlet hole section 3111 facing the finger surface I-2, an intermediate hole section 3112 extending along the palm thickness direction and an outlet hole section 3113 extending along the finger length direction, the wire seat 31 is provided with a wire fixing traction mechanism 32 corresponding to the outlet hole section 3113, the wire fixing traction mechanism 32 includes a wire fixing seat 321 and a driving mechanism for driving the wire fixing seat 321 along the surgical fixing silk thread A traction adjustment component that moves in the traction direction is provided with a traction indicating mechanism 33 on the middle hole section 3112. The traction indicating mechanism 33 includes a traction indicating slider 331 and a support spring 332. One end of the traction indicating slider 331 is a thread positioning head 3311 corresponding to the middle hole section 3112 and supporting the surgical fixation thread. The end of the traction indicating slider 331 facing the finger surface I-2 is provided with an indicating scale 3312. The traction indicating slider 331 is floatingly supported on the wire seat through the support spring 332. The support spring 332 drives the thread positioning end of the traction indicating slider 331 to extend into the middle hole section 3112. The wire entry hole section 3111 of the U-shaped threading channel is designed to face the finger surface I-2, which is convenient for the introduction of the surgical fixation thread. The surgical fixation thread is guided through the U-shaped threading channel, which is convenient for the parallel strand guidance of the surgical fixation thread. The surgical fixation thread is supported by a traction force indicating slider 331, and the traction force indicating slider 331 is supported by a support spring 332 to realize traction force feedback of the surgical fixation thread, so that the traction force can be indicated in the initial stage. After the surgical fixation thread is fixed, the operator can adjust the traction force according to the actual fracture fragment reduction situation to ensure reliable fracture fragment reduction and facilitate more precise control of the traction force.

[0032] The traction force adjustment component includes an adjusting screw 322 and a nut block 323, the adjusting screw 322 is threadedly matched with the nut block 323, the fixing portion 11 includes two parallel fixed arms 111, a gap 112 is formed between the fixed arms 111, the wire seat 31 is protruded on one side facing the finger surface I-2 and is provided with a nut block guide seat 314 extending into the gap 112, the nut block guide seat 314 has a nut guide hole cavity 31141, the nut guide hole cavity 31141 is correspondingly connected to the outlet hole section 3113, the nut block 323 is linearly positioned and slidably matched in the nut guide hole cavity 31141, the adjusting screw 322 is positioned and rotatably matched on the nut block guide seat 314, the adjusting screw 322 has an adjusting end 3221 placed in the gap 112, and the wire fixing seat 321 is fixed on the nut block 323. Rotating the adjusting screw 322 realizes the linear movement of the nut, thereby realizing the traction of the surgical fixation wire, and achieving the traction force adjustment of the surgical fixation wire. The adjustment operation is simple and reliable, and the linear movement of the adjusting nut is used to realize the control of the traction force. During the adjustment process, the surgical fixation wire that is twisted will not be twisted and affect the traction force, making the traction force control more accurate and reliable; in addition, the fixing part 11 adopts a two-arm design, and the wire seat 31 protrudes the nut block guide seat 314 toward the interval 112 between the two arms, which has the advantage of compact structure. Of course, as a feasible solution of the present invention, the traction force adjustment component can adopt a winding mechanism, a gear rack mechanism, etc., but the nut screw mechanism design has the advantages of stable adjustment, convenient operation and compact structure.

[0033] To facilitate the threading operation, the end connecting the inlet hole section 3111 and the middle hole section 3112 is a through hole penetrating the wire seat 31, the middle hole section 3112 is slot-shaped, the inlet of the outlet hole section 3113 is penetrating the wire seat 31, and the side of the wire seat 31 facing away from the fingertips is covered with a protective cover 34. To facilitate the threading operation of the surgical fixing thread, the protective cover 34 is covered on the back of the wire seat after the threading operation is completed to achieve a protective effect.

[0034] In this specific embodiment, the wire fixer 3 also includes a positioning box 35, the wire holder 31 is adjustable in position and is arranged on the positioning box 35, the positioning box 35 is detachably mounted on the fixing part 11, thereby constituting that the wire fixer 3 is detachably mounted on the fixing part 11, a flat positioning cavity 350 is provided in the positioning box 35 which is flat along the length direction of the finger, the wire holder 31 is flat, the flat wire holder 31 is positioned in the positioning box 35 along the length direction of the finger, and the wire holder 31 is adjustable in position along the palm thickness direction and along the finger width direction in the flat positioning cavity 350. With the movement and adjustment of the position of the wire holder, the traction direction of the fracture position by the surgical fixation wire is adjusted, so that the reduction of the fracture fragment is more reliable and the patient's rehabilitation effect is improved. With the cooperation of the flat structure, it has the advantages of compact wire holder structure and reliable positioning.

[0035] The top and bottom surfaces of the positioning box 35 are provided with strip-shaped transverse guide grooves 351 extending in the corresponding finger width direction, the transverse guide grooves 351 of the positioning box 35 are slidingly guided with transverse guide blocks 352, and the transverse guide blocks 352 located on the top surface of the positioning box 35 are positioned and rotated with longitudinal adjustment bolts 353, the wire holder 31 is provided with longitudinal threaded holes 315 corresponding to the longitudinal adjustment bolts 353, the longitudinal adjustment bolts 353 are screwed on the longitudinal threaded holes 315, and the transverse guide blocks 352 located on the bottom surface of the positioning box 35 are provided with guide rods, and the wire holder 31 is provided with guide holes 316 that cooperate with the guide rods, wherein the longitudinal threaded holes 315 are located at the center of the wire holder. The conductor holder 31 is provided with guide holes 316 located on both sides of the longitudinal threaded hole 315, which has the advantages of stable and reliable longitudinal movement of the conductor holder. The guide holes 316 avoid the middle position and have more dimensional space to achieve reliable guidance of the conductor holder. The back protrusion of the positioning box 35 away from the fingertips has two relatively arranged guide convex plates 354, and the guide convex plates 354 are provided with longitudinal guide grooves 3541. The longitudinal guide grooves 3541 are equipped with longitudinal guide blocks 355 for sliding guidance. The longitudinal guide blocks 355 are equipped with adjustment screws 356 for positioning and rotation. The back protrusion of the conductor holder 31 away from the fingertips has nut protrusions 317, and the adjustment screws 356 are threadedly matched on the nut protrusions 317. Under this structural design, the longitudinal adjustment bolts 353 for positioning and rotation and the transverse adjustment bolts for positioning and rotation are used to adjust the position of the conductor holder, which has the advantages of simple adjustment operation and compact structure. In addition, under the structural design of transverse adjustment and longitudinal adjustment, the design space requirements of the U-shaped threading hole are effectively taken into account, which has the advantages of compact structure and reliable movement of the conductor holder position adjustment. The protective cover 34 is covered on the back of the positioning box 35, so as to protect the wire holder; and the protective cover 34 is covered on the outer contour of the positioning box 35, covering the position adjustment mechanism of the wire holder, playing a protective role, and is convenient for patients to wear. The front side wall of the positioning box 35 close to the fingertips and the back side away from the fingertips have a hollow design for the corresponding raised parts of the wire holder (such as the nut block guide seat 314 and the nut protrusion 317) to move and make way when the position of the wire holder is adjusted.

[0036] The fixing portion 11 is provided with two plug connectors. In this specific embodiment, the end of the fixing arm 111 constitutes the plug connector. The base 21 is provided with a socket 211 that is plugged and matched with the plug connector in a one-to-one manner. The base 21 is provided with two relatively arranged U-shaped locking blocks 24, which are matched with the socket 211 in a one-to-one manner. The U-shaped locking block 24 is slidably matched on the base 21, and a free end of the U-shaped locking block 24 is provided with a locking head 241 that can be inserted into the socket 211. The other free end of the U-shaped locking block 24 is a press-to-unlock end 242, which is exposed on the side wall of the base 21 in the corresponding finger width direction. A locking spring 25 that drives the lock head 241 to extend into the socket 211 is provided between the two U-shaped locking blocks 24, and a locking groove 1111 that corresponds to the lock head 241 is provided on the plug connector. The base 21 and the fixing portion 11 are matched by plugging, and locked and unlocked by a corresponding locking structure. The locking structure has the advantages of simple and compact structure and simple and convenient operation.

[0037] The positioning box 35 is provided with a plug sleeve 357 which cooperates with the plug connector. The plug sleeve 357 is provided with a locking screw 358 to achieve reliable fixation of the wire fixer 3, making it convenient for the patient to wear it in the future.

Claims

1. A surgical auxiliary instrument for a mallet finger, characterized in that: The invention comprises a wearing part which is fixed on the finger, the wearing part is made of plastic, the wearing part has a fixing part which extends along one side of the finger surface to the finger tip position, the fixing part is made of metal, the fixing part is provided with a needle guide at the finger tip position, the needle guide comprises a base and a needle guide cylinder arranged on the base, the needle guide cylinder forms at least two needle guide paths which are located on the same plane and matched at an angle; the base is detachably mounted on the fixing part, the fixing part is detachably mounted with a wire fixer, the wire fixer comprises a traction and pressure device, the traction and pressure device comprises a wire seat, a U-shaped wire threading hole is provided on the wire seat, the U-shaped wire threading hole comprises a wire entry hole section facing the finger surface, and a middle hole section extending along the palm thickness direction. and a wire outlet hole section extending along the finger length direction, the wire seat is provided with a fixed wire traction mechanism corresponding to the wire outlet hole section, the fixed wire traction mechanism includes a fixed wire seat and a traction adjustment component that drives the fixed wire seat to move along the traction direction of the surgical fixed wire, a traction indicating mechanism is provided on the middle hole section, the traction indicating mechanism includes a traction indicating slider and a supporting spring, one end of the traction indicating slider is a wire positioning head corresponding to the middle hole section and supporting the surgical fixed wire, an indicating scale is provided on the end of the traction indicating slider facing the finger surface, the traction indicating slider is floatingly supported on the wire seat through the supporting spring, and the supporting spring drives the wire positioning end of the traction indicating slider to extend into the middle hole section.

2. The hammer finger surgical auxiliary instrument according to claim 1, characterized in that: The base is provided with a syringe seat, and the syringe seat is provided with two needle guide cylinders, and the two needle guide cylinders respectively form a needle guide path.

3. The hammer finger surgical auxiliary instrument according to claim 1, characterized in that: The base is provided with a syringe seat which is linearly slidably matched along the finger width direction, and a single needle guide cylinder is horizontally positioned and rotatably matched on the syringe seat, so that at least two needle guide paths are formed by sliding the syringe seat and rotating the needle guide cylinder.

4. The hammer finger surgical auxiliary instrument according to claim 2 or 3, characterized in that: The syringe seat is detachably mounted on the base.

5. The hammer finger surgical auxiliary instrument according to claim 1, characterized in that: The traction force adjustment assembly includes an adjusting screw and a nut block, the adjusting screw is threadedly matched with the nut block, the fixing part includes two parallel fixed arms, a gap is formed between the fixed arms, a side protrusion of the wire seat facing the finger surface is provided with a nut block guide seat extending into the gap, the nut block guide seat has a nut guide hole cavity, the nut guide hole cavity is correspondingly connected to the outlet hole section, the nut block is linearly positioned and slidably matched in the nut guide hole cavity, the adjusting screw is positioned and rotatably matched on the nut block guide seat, the adjusting screw has an adjusting end placed in the gap, and the wire fixing seat is fixed on the nut block.

6. The hammer finger surgical auxiliary instrument according to claim 5, characterized in that: The end connecting the inlet hole section and the middle hole section is a through hole penetrating the wire seat, the middle hole section is slot-shaped, the inlet of the outlet hole section is penetrating the wire seat, and a protective cover is provided on the side of the wire seat facing away from the fingertips.

7. The hammer finger surgical auxiliary instrument according to claim 1, characterized in that: The wire holder also includes a positioning box, the wire holder is adjustably arranged on the positioning box, the positioning box is detachably mounted on the fixed part so that the wire holder can be detachably mounted on the fixed part, a flat positioning cavity is provided in the positioning box which is flat along the finger length direction, the wire holder is flat, the flat wire holder is positioned in the positioning box along the finger length direction, and the wire holder is adjustably arranged in the flat positioning cavity along the palm thickness direction and the finger width direction.

8. The hammer finger surgical auxiliary instrument according to claim 7, characterized in that: The top and bottom surfaces of the positioning box are provided with strip-shaped transverse guide grooves extending in the direction of the corresponding finger width, the transverse guide grooves of the positioning box are equipped with transverse guide blocks for sliding guides, and the transverse guide blocks located on the top surface of the positioning box are equipped with longitudinal adjustment bolts for positioning and rotation. The wire seat is provided with a longitudinal threaded hole corresponding to the longitudinal adjustment bolt, and the longitudinal adjustment bolt is screwed on the longitudinal threaded hole. A guide rod is provided on the transverse guide block located on the bottom surface of the positioning box, and a guide hole is provided on the wire seat for matching with the guide rod guide. The back side of the positioning box away from the fingertips has two relatively arranged guide convex plates, and the guide convex plates are provided with longitudinal guide grooves, and the sliding guide in the longitudinal guide grooves is equipped with longitudinal guide blocks, and the longitudinal guide blocks are equipped with adjustment screws for positioning and rotation. The back side of the wire seat away from the fingertips has a nut protrusion, and the adjusting screw thread is matched with the nut protrusion.

9. The hammer finger surgical auxiliary instrument according to claim 1, characterized in that: The fixing portion is provided with two plug connectors, the base is provided with plug sleeves that are plugged and matched with the plug connectors in a one-to-one manner, the base is provided with two U-shaped locking blocks that are arranged opposite to each other, the U-shaped locking blocks are matched with the plug sleeves in a one-to-one manner, the U-shaped locking blocks are slidably matched on the base, one free end of the U-shaped locking block is provided with a locking head that can be inserted into the plug sleeve, the other free end of the U-shaped locking block is a press-to-unlock end, the press-to-unlock end is exposed on the side wall of the base in the corresponding finger width direction, a locking spring that drives the locking head to extend into the plug sleeve is provided between the two U-shaped locking blocks, and the plug connector is provided with a lock groove that corresponds to the lock head.

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