CN210494207U

CN210494207U - Calcaneus fracture restorer

Info

Publication number: CN210494207U
Application number: CN201920570275.7U
Authority: CN
Inventors: 叶智江; 翟永清
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-16
Filing date: 2019-04-16
Publication date: 2020-05-12
Anticipated expiration: 2029-04-16

Abstract

The utility model relates to a calcaneum fracture restorer, including the fixed bolster for the fracture piece that the manipulation fracture piece resets is controlled the support, and connects the connecting device of fixed bolster and fracture piece manipulation support, and the fracture piece is controlled the support and is set up on the fixed bolster through connecting device is universal, movable, and the moving direction and the fracture piece axial direction of fracture piece manipulation support suit, and connecting device includes universal joint mechanism and drive mechanism, the fracture piece is controlled the support and is realized universal and can lock the connection of location on the fixed bolster through universal joint mechanism, and the removal of fracture piece manipulation support is through drive mechanism drive and location. Has the advantages of simple structure, convenient operation and reliable calcaneus reduction, effectively improves the safety and the efficiency of the calcaneus fracture operation, reduces the operation risk and reduces the pain of the wounded.

Description

Calcaneus fracture restorer

Technical Field

The utility model relates to a medical appliance, in particular to a calcaneus fracture restorer.

Background

At present, orthopedists are difficult to reduce fractured calcaneus in the operation treatment of the calcaneus. The calcaneus is not held by force in the process of reduction, so that the reduction of the calcaneus can be only operated by a doctor with abundant experience, and even if the reduction is carried out, the risk of error exists, and the defect of inconvenient operation exists.

Disclosure of Invention

The utility model discloses the invention purpose: for overcoming the defect that prior art exists, the utility model provides a calcaneum fracture restorer has simple structure, convenient operation, and the reliable advantage that resets of calcaneum effectively improves calcaneum fracture operation security and operation efficiency, reduces the operation risk, and it is painful to reduce the person of hindering.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a calcaneum fracture restorer which characterized in that: including the fixed bolster for the fracture piece that the manipulation fracture piece resets is controlled the support to and connect the connecting device that fixed bolster and fracture piece were controlled the support, the fracture piece is controlled the support and is set up on the fixed bolster through connecting device is universal, movable, and the moving direction that the fracture piece was controlled the support suits with fracture piece axial direction, and connecting device includes universal joint mechanism and drive mechanism, the fracture piece is controlled the support and is realized on the fixed bolster universal and can lock the connection of location through universal joint mechanism, and the removal that the fracture piece was controlled the support is through drive mechanism drive and location.

Through adopting above-mentioned technical scheme, fracture piece manipulation support provides the control point of manipulation fracture piece, realizes the regulation to fracture piece angle, and traction mechanism realizes pulling the regulation to the fracture piece, reaches the accurate reliable reduction of fracture piece, can need not the doctor to support the fracture reduction after the fracture position resets to improve the reliability and the stability that reset, provide good basis for the later stage operation, improve calcaneum fracture operation security and operation efficiency, reduce the operation risk, it is painful to reduce the wounded.

Preferably, the fixed bolster includes the base, and the horizontal both sides of base all are equipped with the preceding needle guide arm that rises, form the preceding vallecular cavity that supplies the foot to put into between two preceding needle guide arms, are equipped with corresponding complex kirschner wire director on two preceding needle guide arms, and fracture piece manipulation support includes the base, and the horizontal both sides of base all are equipped with the back needle guide arm that rises, form the back vallecular cavity that supplies the foot to put into between two back needle guide arms, are equipped with corresponding complex needle guide on two back needle guide arms. Under this structural design, fixed bolster and fracture piece manipulation support all suit with human foot's appearance, and human foot is arranged in preceding vallecular cavity and back vallecular cavity, reaches the reliable location of fixed bolster and fixes on human foot and fracture piece manipulation support and fracture piece are reliably connected to the assurance is to the fracture piece the operation that resets reliable and stable, provides good basis for the later stage operation.

Preferably, the front needle guide arm corresponding to the outer side position of the human foot is removably provided on the base from the kirschner wire introduction position, and the rear needle guide arm located on the side corresponding to the front needle guide arm of the removable design is removably provided on the base from the kirschner wire introduction position. Under this structural design, lie in the preceding needle arm with one side and the mode setting that can remove of back guide pin arm adoption, reset fixedly at the fracture piece after, can withdraw from the ke shi needle director of the preceding needle arm of unilateral and the needle guide ware of back guide pin arm with the ke shi needle, nevertheless the ke shi needle is still fixed the corresponding bone piece of foot through preceding needle arm of opposite side and back guide pin arm, thereby guarantee that the position that resets of fracture piece is fixed unchangeable, later remove preceding needle arm and the back guide pin arm of this side from ke shi needle fixed position, make the foot outside expose, make things convenient for the operation.

Preferably, the front needle guide arm is turnably provided on the base so as to constitute the front needle guide arm to be removable from the kirschner wire introduction position, and the rear needle guide arm is turnably provided on the base so as to constitute the rear needle guide arm to be removable from the kirschner wire introduction position. Under this structural design, remove and get into convenient operation, and simple structure from the leading-in position of ke shi needle through the leading needle arm of upset and back guide pin arm realization.

Preferably, the front needle guiding arm is hinged to the base, the rear needle guiding arm is hinged to the base, the hinged portion of the front needle guiding arm and the hinged portion of the rear needle guiding arm are provided with limiting bosses, the limiting bosses of the front needle guiding arm are abutted to the upper end face of the hinged seat of the base for limiting, and the limiting bosses of the rear needle guiding arm are abutted to the upper end face of the hinged seat of the base for limiting. Under this structural design, preceding needle arm and back guide pin arm upwards overturn when leading into the position of kirschner wire, realize contradicting spacing through spacing boss to reach the position determination of preceding needle arm and back needle arm, convenient operation and make the position determination of leading needle arm and back needle arm reliable.

Preferably, the kirschner wire guider on the front guide needle arm corresponding to the inner side position of the human foot and the needle guider on the rear guide needle arm corresponding to the inner side position of the human foot are both detachably assembled with a kirschner wire stabilizer for providing support of the kirschner wire. Under this structural design, the ke shi needle stabilizer can provide ke shi needle auxiliary stay, guarantees that the ke shi needle when withdrawing from the ke shi needle director of the guide pin arm in the foot outside and the guide pin ware of back guide pin arm, and the ke shi needle director of the guide pin arm of opposite side and the guide pin ware of back guide pin arm still can keep good stable fixed action to the ke shi needle above that.

Preferably, the kirschner wire stabilizer comprises a kirschner wire fixing block with a needle penetrating hole, the kirschner wire fixing block is provided with a pair of oppositely arranged clamping pins, and bayonets which are matched with the clamping pins in a one-to-one correspondence manner are arranged on the kirschner wire guider and the needle guide. Under this structural design, the kirschner wire stabilizer simple structure, the fixed mounting that realizes the kirschner wire stabilizer through card foot and bayonet socket card cooperation, kirschner wire stabilizer dismouting convenient operation's advantage.

Preferably, the traction mechanism is a nut-screw mechanism, the traction mechanism comprises a driving part which is positioned and rotationally matched on the fixed support, and a sliding part which is positioned and linearly and slidably matched on the fixed support and is in threaded fit with the driving part, the driving part is provided with an operation part for rotating the driving part, the universal joint mechanism comprises a ball head fixedly connected with the sliding part, a ball socket matched with the ball head is arranged on the fracture block operating support, a locking device for locking and unlocking the position of the ball head is arranged on the fracture block operating support, the locking device comprises a lower ball head seat integrally formed with the fracture block operating support and a ball head gland covering the lower ball head seat, a locking screw is arranged on the ball head gland, the ball head gland is driven to tightly press and lock the ball head in the ball socket after the locking screw is screwed, and the locking of the ball head gland on the ball head is released. Under the structural design, the traction mechanism adopts a nut screw mechanism, and has the advantages of simple structure and simple and convenient operation, the universal joint mechanism adopts a spherical hinge structural design, the ball head of the universal joint mechanism is directly connected with the sliding part of the traction mechanism, and the universal joint mechanism and the traction mechanism are directly and respectively connected with the fixed support and the fracture block control support, so that the whole structure of the restorer is compact, and the adjustment operation is simple and convenient; the ball head is locked and unlocked through the ball head gland, and the universal joint mechanism is simple in structure.

Preferably, the driving part is a screw rod, the sliding part is a threaded sleeve with an internal threaded hole, an operating part is arranged at one axial end of the screw rod, the other axial end of the screw rod is matched with the internal threaded hole of the sliding part in a rotating mode, a positioning track hole is formed in the fixed support, and the sliding part is in linear positioning sliding fit with the positioning track hole. Under this structural design, adopt screw rod drive nut's structural style, the internal screw hole of slider cooperates with the screw rod, and the outer wall and the straight line sliding fit of location track hole adaptation location of slider for the structure is more compact reasonable.

Preferably, preceding needle arm includes and extends and be the lower arm board and the upper arm board that the angle set up along length direction, and the upper arm board is connected one end and is extended towards back needle arm direction slope towards the other end with lower arm board from the upper arm board, the last one end that is connected one end and upper arm board and keeps away from lower arm board of lower arm board at lower arm board and upper arm board of preceding needle arm all is equipped with the kirschner wire director. Under the above-mentioned structural design, a preceding needle guide arm adopts the upper arm board and the lower arm board design that are the angle, and two ke shi needle director designs of corresponding adoption more accord with human foot bone form, can form fixedly on different bone pieces for the fixed bolster is fixed more firmly reliably, is convenient for simultaneously with the fracture piece of bone reset to reasonable physiology form.

The present invention will be further described with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a calcaneus fracture restorer in accordance with an embodiment of the present invention;

FIG. 2 is a top view of the calcaneus fracture reduction device according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a schematic structural view of a state where the front guide pin arm and the rear guide pin are turned and removed from the Kirschner wire lead-in position arm according to the embodiment of the present invention;

FIG. 6 is a partial exploded view of an embodiment of the present invention;

the device comprises a fixed support 1, a front slot cavity 10, a base 11,

hinge seats

111 and 211, front

guide needle arms

12 and 13, Kirschner

wire guides

121 and 131,

limit bosses

132 and 232, a positioning track hole 14, a fracture block control support 2, a base 21, rear

guide needle arms

22 and 23,

guide needles

221 and 231, a connecting device 3, a universal joint mechanism 31, a ball 311, a ball socket 312, a lower ball socket seat 313, a ball gland 314, a locking screw 315, a traction mechanism 32, a driving piece 321, an operating part 3211, a sliding piece 322, a Kirschner wire stabilizer 4, a Kirschner wire fixing block 41, a clamping foot 42, a clamping opening a, a lower arm plate I and an upper arm plate II.

Detailed Description

Referring to the attached drawings 1-6, the utility model discloses a calcaneus fracture repositor, which comprises a fixing support 1, a fracture block control bracket 2 for controlling the reduction of the fracture block and a connecting device 3 for connecting the fixed bracket 1 and the fracture block control bracket 2, wherein the fracture block control bracket 2 is universally and movably arranged on the fixed bracket 1 through the connecting device 3, the moving direction of the fracture block control bracket 2 is adapted to the axial direction of the fracture block, namely, the fracture block operating bracket 2 can carry the fracture block to pressurize and draw so as to achieve the purpose of traction reduction of the fracture block, the connecting device 3 comprises a universal joint mechanism 31 and a traction mechanism 32, the fracture block control bracket 2 is connected to the fixing bracket 1 in a universal and lockable manner through a universal joint mechanism 31, and the fracture block control bracket 2 is driven and positioned by a traction mechanism 31. The fracture piece manipulation support provides the control point of manipulating the fracture piece, realizes the angle modulation of the fracture piece, and traction mechanism realizes the traction adjustment to the fracture piece, thereby reaching the accurate and reliable reduction of the fracture piece, the fracture position can be reduced without supporting the fracture reduction by a doctor, thereby improving the reliability and stability of reduction, providing a good foundation for later operation, improving the safety and the operation efficiency of calcaneus fracture operation, reducing the operation risk, and reducing the pain of the wounded.

For better adaptation foot physiology structural feature, convenient operation, fixed bolster 1 includes

base

11, 11 horizontal both sides of base all are equipped with the preceding needle guide arm 12 of rising, 13, form the preceding vallecular cavity 10 that supplies the foot to put into between two preceding

needle guide arms

12, 13, be equipped with corresponding complex

kirschner wire director

121, 131 on two preceding

needle guide arms

12, 13, fracture piece manipulation support 2 includes

base

21, 21 horizontal both sides of base all are equipped with the back guide pin arm 22 of rising, 23, form the back vallecular cavity 30 that supplies the foot to put into between two back

guide pin arms

22, 23, be equipped with corresponding

complex guide pin

221, 231 on two back

guide pin arms

22, 23. The kirschner wire guider and the wire guider are both used for the puncture guidance of the kirschner wire and the function of fixing the kirschner wire, in the embodiment, the

kirschner wire guider

121, 131 and the

wire guider

221, 231 are all orifice plates provided with kirschner wire through holes for the penetration of the kirschner wire, the

kirschner wire guider

121, 131 and the front guide needle arm are integrally formed, the

wire guider

221, 231 and the rear guide needle arm are integrally formed, the structure of the kirschner wire guider and the wire guider is simple, a plurality of kirschner wire through holes can be designed on the wire guider and the kirschner wire guider according to the requirement, in the drawing, the

kirschner wire guider

121, 131 adopts 3 kirschner wire through holes, the

wire guider

221, 231 adopts 4 kirschner wire through holes, the puncture guider and the wire guider can adopt a plurality of kirschner wire through holes, the number of the kirschner wire points can be increased, and the available puncture points corresponding to the corresponding bone surfaces can be ensured on the kirschner wire guider and the wire guider in the practical clinical, the doctor can conveniently select a proper position to drive in the Kirschner wires and select the number of the Kirschner wires to be driven in; and the perforation diameter of the kirschner wires on the

kirschner wire guides

121 and 131 is smaller than that of the kirschner wires on the

guide pins

221 and 231, and the actual diameter can be adjusted and set by the person in the field according to the requirement. The fixing support and the fracture block operating support in the embodiment are adaptive to the appearance of the foot of the human body, the foot of the human body is arranged in the front groove cavity and the rear groove cavity, the fixing support is reliably positioned and fixed on the foot of the human body, and the fracture block operating support is reliably connected with the fracture block, so that the fracture block is ensured to be stably and reliably reset, and a good foundation is provided for later-stage operation. A grip handle 24 extends from a rear end of the base 21. The doctor can hold the holding handle to operate the fracture block operating bracket to reset the fracture block angle.

Furthermore, the front

needle guide arms

12 and 13 include a lower arm plate I and an upper arm plate II which extend along the length direction and are arranged at an angle α, the angle α can be obtained according to the structure of the human foot bone, the upper arm plate II extends obliquely from the end connected with the lower arm plate I to the other end towards the rear

needle guide arms

22 and 23, the

kirschner wire guides

121 and 131 are respectively arranged at the end connected with the lower arm plate I and the upper arm plate II on the front

needle guide arms

12 and 13 and at the end of the upper arm plate II far away from the lower arm plate I, one front needle guide arm adopts the design of the upper arm plate and the lower arm plate which are arranged at an angle, and the two kirschner wire guides are correspondingly adopted, so that the front needle guide arm is more in line with the shape of the human foot bone, and can be fixed on different bone blocks, so that the fixing bracket is more firm and reliable, and the calcaneus fracture block can be conveniently.

For the operation of the fracture position of convenient later stage to restoreing, adopt following structural design: the front needle guiding arm 13 corresponding to the position outside the human foot is removably provided on the base 11 from the Kirschner wire introducing position, and the rear needle guiding arm 23 located on the side corresponding to the removably designed front needle guiding arm 13 is removably provided on the base 21 from the Kirschner wire introducing position. The front guide needle arm and the rear guide needle arm which are positioned on the same side are arranged in a removable mode, after the fracture block is reset and fixed, the kirschner wire can be withdrawn from the kirschner wire guider of the front guide needle arm on the single side and the guide needle guider of the rear guide needle arm, but the kirschner wire still fixes the corresponding bone block of the foot through the front guide needle arm and the rear guide needle arm on the other side, so that the reset position of the fracture block is fixed, and then the front guide needle arm and the rear guide needle arm on the side are removed from the fixed position of the kirschner wire, so that the outer side of the foot is exposed (as shown in figure 5), and the operation is convenient.

Also, the front needle guide arm 13 is turnably provided on the base 11 so as to constitute the front needle guide arm 13 to be removable from the Kirschner wire introduction position, and the rear needle guide arm 23 is turnably provided on the base 21 so as to constitute the rear needle guide arm 23 to be removable from the Kirschner wire introduction position; the

hinged seats

111 and 211 are arranged on the base 11 and the base 21, and the reversible front guide needle arm 13 and the reversible rear guide needle arm 23 are hinged to the corresponding hinged seats through hinged shafts, the hinged shafts are bolts in the embodiment, so that the operation is convenient, the front guide needle arm and the rear guide needle arm are turned to remove and enter from the Kirschner wire guiding-in position, the operation is convenient, and the structure is simple. Of course, as a feasible solution of the present invention, the detachable design of the kirschner wire leading-in position of the front guide pin arm 13 and the rear guide pin arm 23 can also be directly adopted. For guaranteeing that preceding needle arm and back guide pin arm upset reset to the leading-in position of ke shi needle convenient and target in place, be equipped with

spacing boss

132, 232 on articulated portion of preceding needle arm 13 that can overturn and articulated portion of back guide pin arm 23 that can overturn, spacing boss 132 of preceding needle arm 13 is contradicted spacingly with articulated seat 111 up end of base 11, thereby make preceding needle arm 13 when overturning to vertical state, spacing boss 132 and articulated seat 111 up end counterbalance realize the position and prescribe a limit to, spacing boss 232 of back guide pin arm 23 contradicts spacingly with articulated seat 211 up end of base 21.

During operation, the kirschner wire at the fracture part is fixed by the front guide needle arm and the rear guide needle arm at one side, and in order to further improve the restoration and maintenance of the fracture part after restoration, the kirschner wire guide 121 on the front guide needle arm 12 corresponding to the inner side position of the human foot and the needle guide 221 on the rear guide needle arm 22 corresponding to the inner side position of the human foot can be detachably assembled with the kirschner wire stabilizer 4 for providing support for the kirschner wire. The kirschner wire stabilizer can provide the kirschner wire auxiliary stay, guarantees that the kirschner wire is when withdrawing from the kirschner wire director of the guide pin arm in the foot outside and the needle director of back guide pin arm, and the kirschner wire director of the guide pin arm of opposite side and the needle director of back guide pin arm still can keep good stable fixed action to the kirschner wire on it.

The kirschner wire stabilizer 4 comprises a kirschner wire fixing block 41 with a wire penetrating hole, the wire penetrating hole on the kirschner wire fixing block 41 is matched with the kirschner wire penetrating holes on the kirschner wire guider 121 and the wire guider 221 in a one-to-one corresponding mode, the kirschner wire fixing block 41 is provided with a pair of oppositely arranged clamping feet 42, and bayonets a matched with the clamping feet 42 in a one-to-one corresponding mode are arranged on the kirschner wire guider 121 and the wire guider 221. The Kirschner wire stabilizer has the advantages of simple structure, convenient disassembly and assembly operation and convenient fixed installation of the Kirschner wire stabilizer by the clamping pin and the bayonet.

In this embodiment, the traction mechanism 32 is a nut-screw mechanism, the traction mechanism 32 includes a driving element 321 which is positioned and rotationally fitted on the fixing support 1, and a sliding element 322 which is positioned and linearly slidably fitted on the fixing support 1 and is in threaded fit with the driving element 321, the driving element 321 has an operating portion 3211 which rotates the driving element 321, the universal joint mechanism 31 includes a ball 311 fixedly connected with the sliding element 322, a ball socket 312 adapted to the ball 311 is disposed on the fracture block operating support 2, and a position locking device for locking and unlocking the position of the ball 311 is disposed on the fracture block operating support 2. The traction mechanism adopts a nut screw mechanism, and has the advantages of simple structure and simple and convenient operation, the universal joint mechanism adopts a spherical hinge structural design, the ball head of the universal joint mechanism is directly connected with the sliding part of the traction mechanism, and the universal joint mechanism and the traction mechanism are directly connected with the fixed support and the fracture block control support respectively, so that the whole structure of the restorer is compact, and the adjustment operation is simple and convenient. The position locking device comprises a lower ball seat 313 integrally formed with the fracture block operating support 2 and a ball gland 314 covered on the lower ball seat 313, a locking screw 315 is arranged on the ball gland 314, the ball gland 314 is driven after the locking screw 315 is screwed to tightly press and lock the ball 311 in the ball seat 312, the locking of the ball gland 314 on the ball 311 is released after the locking screw 315 is unscrewed, the position of the ball is locked and unlocked through the ball gland, and the universal joint mechanism is simple in structure.

The driving part 321 is a screw rod, the sliding part 322 is a threaded sleeve with an internal threaded hole, one axial end of the screw rod is provided with an operating part, the operating part is a hand-screwed wheel, the other axial end of the screw rod is matched with the internal threaded hole of the sliding part 322 in a rotating manner, the fixed support 1 is provided with a positioning track hole 14, the positioning track hole 14 is in a track shape in cross section, correspondingly, the peripheral surface of the sliding part 322 is also in a track shape, and the sliding part 322 is in linear positioning sliding fit in the positioning track hole 14. The driving piece 321 can be fixedly connected with the ball head 311 by means of integral forming or welding, threaded connection and the like, a structural form of a screw driving nut is adopted, a threaded hole in the sliding piece is matched with the screw, and the outer wall of the sliding piece is in positioning linear sliding fit with the positioning track hole in an adaptive manner, so that the structure is more compact and reasonable. Of course, the driving piece can be adopted as the nut, the sliding piece is designed as the screw rod, but the driving piece is adopted under the design of the threaded sleeve with the inner threaded hole for the screw rod and the sliding piece, the structure is more reasonable and compact, and the action is more stable and reliable.

Claims

1. The utility model provides a calcaneum fracture restorer which characterized in that: including the fixed bolster for the fracture piece that the manipulation fracture piece resets is controlled the support to and connect the connecting device that fixed bolster and fracture piece were controlled the support, the fracture piece is controlled the support and is set up on the fixed bolster through connecting device is universal, movable, and the moving direction that the fracture piece was controlled the support suits with fracture piece axial direction, and connecting device includes universal joint mechanism and drive mechanism, the fracture piece is controlled the support and is realized on the fixed bolster universal and can lock the connection of location through universal joint mechanism, and the removal that the fracture piece was controlled the support is through drive mechanism drive and location.

2. The calcaneus fracture repositor of claim 1, wherein: the fixed bolster includes the base, and the horizontal both sides of base all are equipped with the preceding needle guide arm that rises, form the preceding vallecular cavity that supplies the foot to put into between two preceding needle guide arms, are equipped with corresponding complex kirschner wire director on two preceding needle guide arms, and fracture piece manipulation support includes the base, and the horizontal both sides of base all are equipped with the back needle guide arm that rises, form the back vallecular cavity that supplies the foot to put into between two back needle guide arms, are equipped with corresponding complex needle guide on two back needle guide arms.

3. The calcaneus fracture repositor of claim 2, wherein: the front guide needle arm corresponding to the outer side position of the human foot is arranged on the base in a manner of being removable from the guiding position of the Kirschner wire, and the rear guide needle arm positioned on the side corresponding to the front guide needle arm in a removable design is arranged on the base in a manner of being removable from the guiding position of the Kirschner wire.

4. The calcaneus fracture repositor of claim 3, wherein: the front guide needle arm is arranged on the base in a reversible mode so as to form the front guide needle arm to be removable from the Kirschner wire introducing position, and the rear guide needle arm is arranged on the base in a reversible mode so as to form the rear guide needle arm to be removable from the Kirschner wire introducing position.

5. The calcaneus fracture repositor of claim 4, wherein: the front guide needle arm is hinged to the base, the rear guide needle arm is hinged to the base, the hinged portion of the front guide needle arm and the hinged portion of the rear guide needle arm are provided with limiting bosses, the limiting bosses of the front guide needle arm are abutted and limited with the upper end face of the hinged seat of the base, and the limiting bosses of the rear guide needle arm are abutted and limited with the upper end face of the hinged seat of the base.

6. The calcaneus fracture repositor of claim 3, wherein: the Kirschner wire guider on the front guide needle arm corresponding to the inner side position of the human foot and the Kirschner wire stabilizer on the rear guide needle arm corresponding to the inner side position of the human foot are detachably assembled with the Kirschner wire stabilizer for supporting the Kirschner wire.

7. The calcaneus fracture repositor of claim 6, wherein: the Kirschner wire stabilizer comprises a Kirschner wire fixing block with a through needle hole, the Kirschner wire fixing block is provided with a pair of oppositely arranged clamping pins, and bayonets which are matched with the clamping pins in a one-to-one correspondence manner are arranged on the Kirschner wire guider and the needle guide.

8. The calcaneus fracture repositor of claim 1, wherein: the traction mechanism is a nut-screw mechanism and comprises a driving piece which is positioned and rotationally matched on the fixed support and a sliding piece which is positioned and linearly and slidably matched on the fixed support and is in threaded fit with the driving piece, the driving piece is provided with an operation part for rotating the driving piece, the universal joint mechanism comprises a ball head fixedly connected with the sliding piece, a ball socket matched with the ball head is arranged on the fracture block operating support, a locking device for locking and unlocking the position of the ball head is arranged on the fracture block operating support, the locking device comprises a lower ball head seat integrally formed with the fracture block operating support and a ball head gland covering the lower ball head seat, a locking screw is arranged on the ball head gland, the ball head gland is driven to tightly lock the ball head in the ball socket after the locking screw is screwed, and the locking of the ball head by the ball head gland is released after the locking screw is.

9. The calcaneus fracture repositor of claim 8, wherein: the driving piece is a screw rod, the sliding piece is a threaded sleeve with an internal threaded hole, an operating part is arranged at one axial end of the screw rod, the other axial end of the screw rod is matched with the internal threaded hole of the sliding piece in a rotating mode, a positioning track hole is formed in the fixed support, and the sliding piece is in linear positioning sliding fit with the positioning track hole.

10. The calcaneus fracture repositor of claim 2, wherein: preceding needle arm includes and extends and be lower arm plate and the upper arm plate that the angle set up along length direction, and the upper arm plate is connected one end from being connected with lower arm plate and is extended towards the slope of needle arm direction behind the other end, preceding needle arm is last under arm plate and upper arm plate be connected one end and the one end that the upper arm plate kept away from lower arm plate all is equipped with the kirschner wire director.