Kirschner wire introducer for internal fixation of phalanx fractures

Abstract

The present invention relates to a Kirschner wire introducer for internal fixation of phalanx fracture, comprising a rear fracture end fixing seat, a front fracture end fixing seat and a bracket, the bracket comprising an upper connecting arm connected to the rear fracture end fixing seat, a ring connecting frame being fixed at the front end of the upper connecting arm, a first Kirschner wire introduction device being provided in the middle, the first Kirschner wire introduction device comprising a first U-shaped arm and a first adjustment mechanism, two cantilevers of the first U-shaped arm located on both sides of the phalanx being provided with a first guide needle cylinder, a lower connecting arm being fixed at the lower part of the ring connecting frame, a gap corresponding to the ring hole of the ring connecting frame being formed between the lower connecting arm and the upper connecting arm for the phalanx to pass through being formed, a second Kirschner wire introduction device being provided on the lower connecting arm, the second Kirschner wire introduction device comprising a second U-shaped arm and a second adjustment mechanism, two cantilevers of the second U-shaped arm located on both sides of the phalanx being provided with a second guide needle cylinder, and the second U-shaped arm and the first U-shaped arm being arranged in an X shape. Reliable insertion and guidance of the Kirschner wire can be achieved, and accurate reduction of the fracture can be achieved.

Description

Technical Field

[0001] The invention relates to a medical auxiliary instrument, more specifically a surgical instrument, and more specifically an introducer for inserting a Kirschner wire for internal fixation during phalanx fracture. Background Art

[0002] The existing surgical fixation methods for phalanx fractures include external fixation and Kirschner wire fixation. The Kirschner wire fixation of fractures is usually achieved by inserting two Kirschner wires in a cross shape. The Kirschner wire fixation of bone fractures mainly depends on the experience of the surgeon. Generally, it takes many attempts to insert the needle back and forth to obtain a satisfactory fixation position. Therefore, it is urgent to develop a device that can guide the introduction of the Kirschner wire so as to achieve reliable internal insertion of the Kirschner wire. Summary of the invention

[0003] Purpose of the invention: To overcome the defects of the prior art, the present invention provides a Kirschner wire introducer for internal fixation of phalanx fractures, which can realize reliable insertion and guidance of Kirschner wires and can achieve accurate reduction of fractures.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A Kirschner wire introducer for internal fixation of phalanx fractures comprises a posterior fracture end fixing seat fixed at the joint of the posterior fracture end, a front fracture end fixing seat fixed at the joint of the front fracture end, and a bracket connecting the front fracture end fixing seat and the posterior fracture end fixing seat, the bracket comprising an upper connecting arm located on the dorsal side of the finger, the rear end of the upper connecting arm is fixedly connected to the posterior fracture end fixing seat, the front end of the upper connecting arm is fixedly connected to an annular connecting frame, the front end of the upper connecting arm extends to the front fracture end and passes over the joint of the front fracture end, a first Kirschner wire introduction device is arranged in the middle of the upper connecting arm, the first Kirschner wire introduction device comprises a first U-shaped arm and a first adjustment mechanism, two cantilevers of the first U-shaped arm are located on both sides of the phalanx in the horizontal direction, the two cantilevers of the first U-shaped arm are provided with a first guide needle cylinder located on a coaxial line, and the cross arm of the first U-shaped arm is installed on the upper connecting arm through the first adjustment device The first adjusting device drives the first U-shaped arm to adjust the position of the first needle guide tube. A lower connecting arm is fixed to the lower part of the annular connecting frame. A gap corresponding to the ring hole of the annular connecting frame for the finger bone to pass through is formed between the lower connecting arm and the upper connecting arm. The lower connecting arm extends toward the fracture end rearward relative to the end connected to the annular connecting frame. A second Kirschner wire introduction device is provided on the lower connecting arm. The second Kirschner wire introduction device includes a second U-shaped arm and a second adjusting mechanism. The two cantilevers of the second U-shaped arm are located on both sides of the phalanges. The two cantilevers of the second U-shaped arm are provided with a second needle guide tube located on the coaxial line. The cross arm of the second U-shaped arm is installed on the lower connecting arm via the second adjusting device. The second adjusting device drives the second U-shaped arm to adjust the position of the second needle guide tube. The second U-shaped arm and the first U-shaped arm are arranged in an X shape.

[0006] The method for using the Kirschner wire introducer for internal fixation of phalangeal fractures of the present invention is to sleeve the bracket on the fractured phalange, fix the posterior fracture end fixing seat on the joint of the posterior fracture end, and the bracket is suspended outside the phalange. After the front and rear fracture ends of the phalange are reduced, the front fracture end is fixed by the front fracture end fixing seat, thereby achieving the reduction and maintenance of the phalangeal fracture, facilitating good reduction and fixation of the phalangeal fracture in the later stage, and then adjusting the positions of the first guide needle tube and the second guide needle tube respectively through the first adjustment device and the second adjustment device, so as to obtain the best needle insertion position, and ensure that the Kirschner wire insertion position is accurate and reliable.

[0007] Preferably, the first adjustment device includes a first lateral swing adjustment mechanism for adjusting the lateral swing of the first U-shaped arm and a first longitudinal swing adjustment mechanism for adjusting the longitudinal swing of the first U-shaped arm. The first lateral swing adjustment mechanism includes a first base, a first adjusting worm gear and a first adjusting worm. The first adjusting worm and the first adjusting worm gear are positioned and rotated to cooperate with each other on the first base and mesh with each other. The first adjusting worm has an adjustment end for driving the first adjusting worm. A first column is raised on the disk surface of the first adjusting worm gear. The cross arm of the first U-shaped arm is pivotally mounted on the first column. The first column is provided with a first longitudinal swing adjustment member that drives the first U-shaped arm to swing. The first longitudinal swing adjustment member is matched with a first locking structure. Under this structural design, the longitudinal and lateral swings of the first U-shaped arm are realized to achieve position adjustment, ensuring that the Kirschner wire enters the position accurately and reliably. The worm wheel and the worm have a self-locking function, and the first locking structure realizes the locking of the first U-shaped arm after the position adjustment is completed.

[0008] Preferably, the second adjustment device includes a second lateral swing adjustment mechanism for adjusting the lateral swing of the second U-shaped arm and a second longitudinal swing adjustment mechanism for adjusting the longitudinal swing of the second U-shaped arm. The second lateral swing adjustment mechanism includes a second base, a second adjusting worm gear and a second adjusting worm. The second adjusting worm and the second adjusting worm gear are positioned and rotated to fit on the second base and mesh with each other. The second adjusting worm has an adjustment end for driving the second adjusting worm. A second column is raised on the disk surface of the second adjusting worm gear. The cross arm of the second U-shaped arm is pivotally mounted on the second column. The second longitudinal swing adjustment mechanism includes a second longitudinal swing adjustment member. The second column is provided with a second longitudinal swing adjustment member that drives the second U-shaped arm to swing. The second longitudinal swing adjustment member is matched with a second locking structure. Under this structural design, the longitudinal and lateral swings of the second U-shaped arm are realized to achieve position adjustment, ensuring that the Kirschner wire enters the position accurately and reliably. The worm wheel and the worm have a self-locking function, and the second locking structure realizes the locking of the second U-shaped arm after the position adjustment is completed.

[0009] Preferably, the first locking structure includes a first damping ring, the first longitudinal swing adjustment member includes a first drive shaft and a first adjustment rod, the first drive shaft is linked with the first U-shaped arm, a first positioning cylinder is provided on the first column, the first adjustment rod is axially slidably matched in the first positioning cylinder, the first adjustment rod and the first drive shaft can slide relative to each other axially and are linked circumferentially, a first damping disk is provided on the first adjustment rod, the first damping ring is fixed to the mouth of the first positioning cylinder, a first locking spring is provided in the first positioning cylinder to drive the first adjustment rod to approach the first damping disk and stick to the first damping ring, the operating end of the first adjustment rod extends out of the first damping ring, and the first adjustment rod is driven to move axially until the first damping disk compresses the first locking spring and disengages the first damping ring, so that the first adjustment rod can be rotated to drive the first drive shaft to rotate. Under this structural design, the first adjustment rod is automatically locked under the action of the first locking spring, and the adjustment is achieved by pressing the first adjustment rod during adjustment.

[0010] Preferably, the second locking structure includes a second damping ring, the second longitudinal swing adjustment member includes a second drive shaft and a second adjustment rod, the second drive shaft is linked with the second U-shaped arm, a second positioning cylinder is provided on the second column, the second adjustment rod is axially slidably fitted in the second positioning cylinder, the second adjustment rod and the second drive shaft can slide relative to each other axially and are circumferentially linked, a second damping disk is provided on the second adjustment rod, the second damping ring is fixed to the mouth of the second positioning cylinder, a second locking spring is provided in the second positioning cylinder to drive the second adjustment rod to approach the second damping disk and stick to the second damping ring, the operating end of the second adjustment rod extends out of the second damping ring, and the second adjustment rod is driven to move axially by pressing until the second damping disk compresses the second locking spring to disengage the second damping ring, so that the second adjustment rod can be rotated to drive the second drive shaft to rotate. Under this structural design, the second adjustment rod is automatically locked under the action of the second locking spring, and the adjustment is achieved by pressing the second adjustment rod during adjustment.

[0011] Preferably, the anterior fracture end fixing seat includes two relatively arranged arc-shaped fixing arms, one arc-shaped fixing arm is provided with a threaded cylinder, a locking bone screw is screwed on the threaded cylinder, and the other arc-shaped fixing arm is provided with a fixing cylinder, the fixing cylinder is axially movable with a positioning nail, the positioning nail is equipped with a top pressure spring that drives the positioning nail to move toward the locking bone screw, and the positioning nail has a fixing needle introduction hole. Under this structural design, the locking bone screw is adjusted to a suitable position, the positioning nail is pulled away from the locking bone screw, and after the position adjustment of the anterior fracture end is completed, the positioning nail is released to clamp the anterior fracture end, and then the fixing needle is inserted into the positioning nail, thereby achieving the fixation of the anterior fracture end.

[0012] Preferably, the posterior fracture end fixing seat is an arc-shaped plate, and a guide pin hole is provided on the arc-shaped plate. This structural design has the advantage of being simple in structure.

[0013] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a Kirschner wire introducer for internal fixation of phalanx fractures according to a specific embodiment of the present invention;

[0015] Figure 2 It is an exploded view of a first Kirschner wire introduction device according to a specific embodiment of the present invention;

[0016] Figure 3 It is an exploded view of a first locking structure according to a specific embodiment of the present invention;

[0017] Figure 4 It is an exploded view of a second Kirschner wire introduction device according to a specific embodiment of the present invention;

[0018] Figure 5 It is an exploded view of a second locking structure according to a specific embodiment of the present invention;

[0019] Figure 6 It is a schematic structural diagram of an anterior fracture end fixing seat according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0020] See attached Figures 1 to 6The present invention discloses a Kirschner wire introducer for internal fixation of phalanx fracture, comprising a posterior fracture end fixing seat 1 fixed at the posterior fracture end joint, a front fracture end fixing seat 2 fixed at the front fracture end joint, and a bracket 3 connecting the front fracture end fixing seat 2 and the posterior fracture end fixing seat 1, wherein the posterior fracture end fixing seat 1 is an arc-shaped plate, and a guide pin hole 11 is provided on the arc-shaped plate; the bracket 3 comprises an upper connecting arm 31 located on the dorsal side of the phalanx, the rear end of the upper connecting arm 31 is fixedly connected to the posterior fracture end fixing seat 1, the front end of the upper connecting arm 31 is fixedly connected to an annular connecting frame 32, the front end of the upper connecting arm 31 extends to the front fracture end and passes over the front fracture end joint, a first Kirschner wire introduction device 4 is provided in the middle of the upper connecting arm 31, the first Kirschner wire introduction device 4 comprises a first U-shaped arm 41 and a first adjustment mechanism, two cantilevers 411 of the first U-shaped arm 41 are located on both sides of the phalanx in the horizontal direction, and the two cantilevers 411 of the first U-shaped arm 41 are located on both sides of the phalanx in the horizontal direction. 411 is provided with a first needle guide tube 412 located on the coaxial line, the cross arm 413 of the first U-shaped arm 41 is installed on the upper connecting arm 31 through a first adjusting device, the first adjusting device drives the first U-shaped arm 41 to achieve the position adjustment of the first needle guide tube 412, a lower connecting arm 33 is fixed to the lower part of the annular connecting frame 32, a gap corresponding to the ring hole of the annular connecting frame 32 is formed between the lower connecting arm 33 and the upper connecting arm 31 for the phalanx to pass through, the lower connecting arm 33 extends backward to the fracture end relative to the end connected to the annular connecting frame 32, a second Kirschner wire introduction device 5 is provided on the lower connecting arm 33, the second Kirschner wire introduction device 5 includes a second U-shaped arm 51 and a second adjusting mechanism, two cantilevers 511 of the second U-shaped arm 51 are located on both sides of the phalanx, the two cantilevers 511 of the second U-shaped arm 51 are provided with a second needle guide tube 512 located on the coaxial line, the cross arm of the second U-shaped arm 51 513 Second The adjustment device is installed on the lower connecting arm 33 The second adjustment device drives the second U-shaped arm 51 to adjust the position of the second needle guide tube, and the second U-shaped arm 51 and the first U-shaped arm 41 are arranged in an X shape. The upper connecting arm 31, the annular connecting frame 32 and the lower connecting arm 33 are formed by bending the steel wire strip as a whole, which has the advantage of simple structure. The upper connecting arm of the bracket 3 extends and passes over the joint of the front fracture end, and the front fracture end fixing seat is located on the lower side of the finger through the annular connecting frame and the lower connecting arm, thereby avoiding the interference of the front fracture end fixing seat on the upper side with the introduction of the Kirschner wire.

[0021] In this specific embodiment, the first adjustment device includes a first transverse swing adjustment mechanism for adjusting the transverse swing of the first U-shaped arm 41 and a first longitudinal swing adjustment mechanism for adjusting the longitudinal swing of the first U-shaped arm 41. The first transverse swing adjustment mechanism includes a first base 42, a first adjusting worm gear 43 and a first adjusting worm 44. The first adjusting worm 44 and the first adjusting worm gear 43 are positioned and rotated on the first base 42 and mesh with each other. The first adjusting worm 44 has an adjusting end for driving the first adjusting worm 44. A first column 431 is protruded on the disk surface of the first adjusting worm gear 43. The cross arm 412 of the first U-shaped arm 41 is pivotally mounted on the first column 431. The first longitudinal swing adjustment mechanism includes a first longitudinal swing adjustment member 44 for driving the first U-shaped arm 41 to swing. The first longitudinal swing adjustment member 44 is arranged on the first column 431 and is matched with a first locking structure. The first longitudinal swing adjustment member 44 is linked to the first U-shaped arm 41 through a gear pair. The first locking structure includes a first damping ring 45, the first longitudinal swing adjustment member 44 includes a first drive shaft 441 and a first adjustment rod 442, the first drive shaft 441 is linked with the first U-shaped arm 41, a first positioning tube 432 is provided on the first column 431, the first adjustment rod 442 is axially slidably matched in the first positioning tube 432, the first adjustment rod 442 and the first drive shaft 441 can slide relative to each other in the axial direction and are linked circumferentially, and a first damping disk 4421 is provided on the first adjustment rod 442 The first damping ring 45 is fixed to the mouth of the first positioning cylinder 432. The first positioning cylinder 432 is provided with a first locking spring 46 that drives the first adjustment rod 442 to approach the first damping disk 4421 and abut against the first damping ring 45. The operating end of the first adjustment rod 442 extends out of the first damping ring 45, and presses and drives the first adjustment rod 442 to move axially until the first damping disk 4421 compresses the first locking spring 46 and disengages the first damping ring 45, so that the first adjustment rod 442 can be rotated to drive the first driving shaft 441 to rotate. Under the action of the first locking spring, the first adjustment rod is automatically locked, and when adjusting, the first adjustment rod is pressed to achieve adjustment.

[0022] The second adjustment device includes a second lateral swing adjustment mechanism for lateral swing adjustment of the second U-shaped arm 51 and a second longitudinal swing adjustment mechanism for longitudinal swing adjustment of the second U-shaped arm 51. The second lateral swing adjustment mechanism includes a second base 52, a second adjustment worm gear 53 and a second adjustment worm 54. The second adjustment worm 54 and the second adjustment worm gear 53 are positioned and rotated on the second base 52 and mesh with each other. The second adjustment worm 54 has an adjustment end for driving the second adjustment worm 54. A second column 531 is protruded on the disk surface of the second adjustment worm gear 53. The cross arm of the second U-shaped arm 51 is pivotally mounted on the second column 531. The second longitudinal swing adjustment mechanism includes a second longitudinal swing adjustment member 55. The second column 531 is provided with a second longitudinal swing adjustment member 55 for driving the second U-shaped arm 51 to swing. The second longitudinal swing adjustment member 55 is matched with a second locking structure. The second longitudinal swing adjustment member 55 is linked with the second U-shaped arm 51 through a gear pair. The second locking structure includes a second damping ring 56, the second longitudinal swing adjustment member 55 includes a second drive shaft 551 and a second adjustment rod 552, the second drive shaft 551 is linked with the second U-shaped arm 51, a second positioning cylinder 532 is provided on the second column 531, the second adjustment rod 552 is axially slidably matched in the second positioning cylinder 532, the second adjustment rod 552 and the second drive shaft 551 can slide relative to each other in the axial direction and are circumferentially linked, and a second damping disk 5521 is provided on the second adjustment rod 552 The second damping ring 56 is fixed to the mouth of the second positioning cylinder 532. A second locking spring 57 is provided in the second positioning cylinder 532 to drive the second adjusting rod 552 to approach the second damping disk 5521 and abut against the second damping ring 56. The operating end of the second adjusting rod 552 extends out of the second damping ring 56, and presses and drives the second adjusting rod 552 to move axially until the second damping disk 5521 compresses the second locking spring 57 and disengages the second damping ring 56, so that the second adjusting rod 552 can be rotated to drive the second driving shaft 551 to rotate. Under the action of the second locking spring 57, the second adjusting rod 552 is automatically locked. When adjusting, the second adjusting rod 552 is pressed to achieve adjustment.

[0023] In this specific embodiment, the anterior fracture end fixing seat 2 includes two arc-shaped fixing arms 21 arranged opposite to each other, one arc-shaped fixing arm 21 is provided with a threaded cylinder 211, and the threaded cylinder 211 is threadedly screwed with a locking bone screw 22, and the other arc-shaped fixing arm 21 is provided with a fixing cylinder 212, and the fixing cylinder 212 is axially movable with a positioning nail 23, and the positioning nail 23 is equipped with a top pressure spring that drives the positioning nail 23 to move toward the locking bone screw 22, and the positioning nail 23 has a fixing needle introduction hole 231. Adjust the locking bone screw 22 to a suitable position, pull the positioning nail 23 away from the locking bone screw 22, and after the position adjustment of the anterior fracture end is completed, release the positioning nail 23 to clamp the anterior fracture end, and then insert the fixing needle into the positioning nail 23, so as to achieve the fixation of the anterior fracture end.

[0024] The method for using the Kirschner wire introducer for internal fixation of phalangeal fractures of the present invention is to sleeve the bracket on the fractured phalange, fix the posterior fracture end fixing seat on the joint of the posterior fracture end, and the bracket is suspended outside the phalange. After the front and rear fracture ends of the phalange are reduced, the front fracture end fixing seat 2 is used to fix the front fracture end, thereby achieving the reduction and maintenance of the phalangeal fracture, facilitating good reduction and fixation of the phalangeal fracture in the later stage, and then adjusting the positions of the first guide needle tube and the second guide needle tube respectively through the first adjustment device and the second adjustment device, so as to obtain the best needle insertion position, and ensure that the Kirschner wire insertion position is accurate and reliable.

Claims

1. A Kirschner wire introducer for internal fixation of phalanx fractures, characterized in that: The invention comprises a posterior fracture end fixing seat fixed at the joint of the posterior fracture end, an anterior fracture end fixing seat fixed at the joint of the anterior fracture end, and a bracket connecting the anterior fracture end fixing seat and the posterior fracture end fixing seat, the bracket comprises an upper connecting arm located on the dorsal side of the finger, the rear end of the upper connecting arm is fixedly connected to the posterior fracture end fixing seat, the front end of the upper connecting arm is fixedly connected to a ring connecting frame, the front end of the upper connecting arm extends to the anterior fracture end and passes over the joint of the anterior fracture end, a first Kirschner wire introduction device is arranged at the middle part of the upper connecting arm, the first Kirschner wire introduction device comprises a first U-shaped arm and a first adjustment mechanism, two cantilevers of the first U-shaped arm are located on both sides of the phalanx, the two cantilevers of the first U-shaped arm are provided with a first guide needle cylinder located on a coaxial line, the cross arm of the first U-shaped arm is installed on the upper connecting arm via a first adjustment device, and the first adjustment device drives the first U-shaped arm to realize the first A position adjustment of a guide needle cylinder, a lower connecting arm is fixed to the lower part of the annular connecting frame, a gap corresponding to the ring hole of the annular connecting frame is formed between the lower connecting arm and the upper connecting arm for the finger bone to pass through, the lower connecting arm extends backward to the fracture end relative to the end connected to the annular connecting frame, a second Kirschner wire introduction device is provided on the lower connecting arm, the second Kirschner wire introduction device includes a second U-shaped arm and a second adjustment mechanism, two cantilevers of the second U-shaped arm are located on both sides of the phalange, the two cantilevers of the second U-shaped arm are provided with a second guide needle cylinder located on the coaxial line, the cross arm of the second U-shaped arm is installed on the lower connecting arm via the second adjustment device, the second adjustment device drives the second U-shaped arm to realize the position adjustment of the second guide needle cylinder, the second U-shaped arm and the first U-shaped arm are arranged in an X shape; the upper connecting arm, the annular connecting frame and the lower connecting arm are formed by bending the steel wire as a whole.

2. The Kirschner wire introducer for internal fixation of phalanx fracture according to claim 1, characterized in that: The first adjustment device includes a first lateral rotation and swing adjustment mechanism for adjusting the lateral swing of the first U-shaped arm and a first longitudinal rotation and swing adjustment mechanism for adjusting the longitudinal swing of the first U-shaped arm. The first lateral rotation and swing adjustment mechanism includes a first base, a first adjusting worm gear and a first adjusting worm. The first adjusting worm and the first adjusting worm gear are positioned and rotated on the first base and mesh with each other. The first adjusting worm has an adjusting end that drives the first adjusting worm. A first column is protruded on the disk surface of the first adjusting worm gear. The cross arm of the first U-shaped arm is pivotally mounted on the first column. The first column is provided with a first longitudinal swing adjustment member that drives the first U-shaped arm to swing. The first longitudinal swing adjustment member is matched with a first locking structure.

3. The Kirschner wire introducer for internal fixation of phalanx fracture according to claim 1 or 2, characterized in that: The second adjustment device includes a second lateral rotation and swing adjustment mechanism for adjusting the lateral swing of the second U-shaped arm and a second longitudinal rotation and swing adjustment mechanism for adjusting the longitudinal swing of the second U-shaped arm. The second lateral rotation and swing adjustment mechanism includes a second base, a second adjusting worm gear and a second adjusting worm. The second adjusting worm and the second adjusting worm gear are positioned and rotated to cooperate with each other on the second base and mesh with each other. The second adjusting worm has an adjustment end that drives the second adjusting worm. A second column is protruded on the disk surface of the second adjusting worm gear. The cross arm of the second U-shaped arm is pivotally mounted on the second column. The second longitudinal rotation and swing adjustment mechanism includes a second longitudinal swing adjustment member. The second column is provided with a second longitudinal swing adjustment member that drives the second U-shaped arm to swing. The second longitudinal swing adjustment member is matched with a second locking structure.

4. The Kirschner wire introducer for internal fixation of phalanx fractures according to claim 2, characterized in that: The first locking structure includes a first damping ring, the first longitudinal swing adjustment member includes a first driving shaft and a first adjusting rod, the first driving shaft is linked with the first U-shaped arm, a first positioning cylinder is provided on the first column, the first adjusting rod is axially slidably fitted in the first positioning cylinder, the first adjusting rod and the first driving shaft can slide relative to each other axially and are circumferentially linked, a first damping disk is provided on the first adjusting rod, the first damping ring is fixed to the mouth of the first positioning cylinder, a first locking spring for driving the first adjusting rod toward the first damping disk and sticking to the first damping ring is provided in the first positioning cylinder, the operating end of the first adjusting rod extends out of the first damping ring, and the first adjusting rod is driven to move axially by pressure until the first damping disk compresses the first locking spring and disengages the first damping ring, thereby the first adjusting rod can be rotated to drive the first driving shaft to rotate.

5. The Kirschner wire introducer for internal fixation of phalanx fracture according to claim 3, characterized in that: The second locking structure includes a second damping ring, the second longitudinal swing adjustment member includes a second drive shaft and a second adjusting rod, the second drive shaft is linked with the second U-shaped arm, a second positioning cylinder is provided on the second column, the second adjusting rod is axially slidably fitted in the second positioning cylinder, the second adjusting rod and the second drive shaft can axially slide relative to each other and are circumferentially linked, a second damping disk is provided on the second adjusting rod, the second damping ring is fixed to the mouth of the second positioning cylinder, a second locking spring is provided in the second positioning cylinder for driving the second adjusting rod toward the second damping disk and sticking to the second damping ring, the operating end of the second adjusting rod extends out of the second damping ring, and the second adjusting rod is driven by top pressure to move axially until the second damping disk compresses the second locking spring to disengage the second damping ring, thereby the second adjusting rod can be rotated to drive the second drive shaft to rotate.

6. The Kirschner wire introducer for internal fixation of phalanx fractures according to claim 1, characterized in that: The anterior fracture end fixing seat includes two relatively arranged arc-shaped fixing arms, one arc-shaped fixing arm is provided with a threaded tube, and a locking bone screw is threadedly screwed on the threaded tube, and the other arc-shaped fixing arm is provided with a fixing tube, and the fixing tube is axially movable with a positioning nail, and the positioning nail is equipped with a pressure spring that drives the positioning nail to move toward the locking bone screw, and the positioning nail has a fixing needle introduction hole.

7. The Kirschner wire introducer for internal fixation of phalanx fractures according to claim 1, characterized in that: The posterior fracture end fixing seat is an arc-shaped plate, and a guide pin hole is arranged on the arc-shaped plate.

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