CN211583436U

CN211583436U - Distal radius spreader

Info

Publication number: CN211583436U
Application number: CN202020176316.7U
Authority: CN
Inventors: 陈孝均; 吴健; 谢霁; 邹永根
Original assignee: Affiliated Hospital of Traditional Chinese Medicine TCM of Southwest Medical University
Current assignee: Affiliated Hospital of Traditional Chinese Medicine TCM of Southwest Medical University
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-09-29
Anticipated expiration: 2030-02-17

Abstract

The utility model provides a radius distal end spreader relates to orthopedic surgery apparatus technical field, and it includes first steel needle and second steel needle, and on first steel needle and second steel needle can be dismantled respectively and be fixed in first cylinder and second cylinder, the second cylinder was fixed in on the telescopic link, and the telescopic link passes through bulb articulate with first cylinder, is provided with the locking nail on the bulb joint. The problem of among the prior art bare-handed traction maintain waste time and energy in the distal end fracture of radius art is solved, be favorable to dissecting the reduction after recovering radius length through drawing.

Description

Distal radius spreader

Technical Field

The utility model relates to the technical field of orthopedic surgery instruments, in particular to a radial distal end spreader.

Background

The forearm has two long bones, the long bone on the side of the thumb is the radius, and the distal end of the radius is the distance within 2 cm of the distal articular surface of the radius. Distal radius fractures are very common, accounting for about 1/10 of normal fractures. After the radius is fractured, the broken end is shortened and displaced, and the radius length is recovered by manual traction and then the fracture block is anatomically reduced.

At present, for distal radius fracture, the conventional mode of manual longitudinal traction reduction and maintenance in operation is time-consuming and labor-consuming. For simple fracture, the length of the radius can be maintained by temporarily fixing the kirschner wire after manual reduction, but for complex comminuted fracture, the length of the radius can not be maintained by temporarily fixing the kirschner wire after manual reduction due to metaphysis crushing, so that the problems of reduction loss of the length of the radius and difficult reduction of the joint surface can be caused.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem among the prior art, the utility model provides a radius distal end struts ware has solved among the prior art problem that the bare-handed traction maintains wasting time and energy in the radius distal end fracture art.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

the utility model provides a radius distal end struts ware, it includes first steel needle and second steel needle, on first steel needle and second steel needle can be dismantled respectively and be fixed in first cylinder and second cylinder, the second cylinder was fixed in on the telescopic link, and the telescopic link passes through bulb articulate with first cylinder, is provided with the locking nail on the bulb articulate.

Furthermore, the structure of first cylinder and second cylinder is the same, all including being provided with the open-ended cylinder, runs through on the cylinder and is provided with the screw rod, and the one end of screw rod is connected with and supports tight nut, and the other end of screw rod is connected with the quick detach handle. The quick-release handle is pulled to clamp or loosen the elastic cylinder so as to achieve the purpose of quickly fixing the steel needle, and the operation is convenient.

Furthermore, the ball joint comprises a ball head and a ball head seat with a ball head groove, the ball head seat is fixedly connected to the first needle cylinder through an extension rod, and the ball head is fixedly connected to the telescopic rod. The moving part ball head in the ball head joint is connected with the telescopic rod, so that the length adjustment between the first needle cylinder and the second needle cylinder and the movable end of the angle adjustment are arranged on one side, and the convenience of operation is improved.

Furthermore, the locking screw is connected to the ball head seat in a threaded manner, the locking screw penetrates into the ball head groove from the outside of the ball head seat, and one end, adjacent to the ball head groove, of the locking screw is provided with a spherical groove corresponding to the ball head. The locking nail is pressed against the ball head through rotating the locking nail, so that the ball head is pressed against the ball head groove, and the ball head joint is locked and does not rotate any more; the spherical groove can increase the contact area of the locking nail and the ball head and increase the locking force.

Furthermore, a disc is fixed at one end of the locking nail outside the ball seat, and anti-skid teeth are processed on the side surface of the disc. The operator can rotate the locking nail by manually rotating the disc, and the friction force can be increased through the anti-skidding teeth, so that the rotating reliability is improved.

Furthermore, the telescopic rod comprises a stud, one end of the stud is fixed on the ball joint, an outer sleeve is sleeved on the stud in a sliding mode and fixed on the second needle cylinder, and a locking nut is connected to the stud in a threaded mode. The telescopic rod of this structure, simple structure, the simple operation, the reliability is high.

Further, the first steel needle and the second steel needle are both threaded Kirschner wires.

The utility model has the advantages that: the first steel needle is fixed to the first needle cylinder, the second steel needle is fixed to the second needle cylinder, be provided with telescopic link and bulb joint between first needle cylinder and the second needle cylinder, the telescopic link makes the distance between first needle cylinder and the second needle cylinder can be adjusted as required, the bulb joint makes the angle between first needle cylinder and the second needle cylinder can be adjusted as required, can carry out the restoration and the maintenance of a plurality of directions to the fracture position, and the operation is convenient, adjust in a flexible way, the effect that the fracture traction was reset has been improved greatly.

The radius distal end spreader in this scheme is with the steel needle squeeze into the bone on fracture both sides to structure through between first cylinder and the second cylinder plays the effect of strutting, pulls open the fracture end that misplaces to both sides and resists the tension of soft tissues such as muscle ligament, makes the fracture can resume normal length.

Drawings

Fig. 1 is a schematic structural view of a distal radius distractor.

Fig. 2 is a schematic structural view of the first syringe or the second syringe in fig. 1.

Wherein, 1, a first steel needle; 2. a second steel needle; 3. a first syringe; 31. an elastic cylinder; 32. a screw; 33. tightly abutting the nut; 34. a quick release handle; 35. an extension pole; 4. a second syringe; 5. a telescopic rod; 51. a stud; 52. an outer sleeve; 53. locking the nut; 6. a ball joint; 61. a ball head; 62. a ball cup seat; 621. a ball head groove; 7. and locking the nail.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in fig. 1, the distal radius spreader comprises a first steel needle 1 and a second steel needle 2, wherein the first steel needle 1 and the second steel needle 2 are both threaded kirschner wires. First steel needle 1 and second steel needle 2 can be dismantled respectively and be fixed in on first syringe 3 and the second syringe 4, and on second syringe 4 was fixed in telescopic link 5, telescopic link 5 passed through bulb joint 6 with first syringe 3 and is connected, is provided with locking nail 7 on the bulb joint 6.

The first syringe 3 and the second syringe 4 have the same structure, as shown in fig. 2, the first syringe and the second syringe are both provided with an open elastic tube 31, the elastic tube 31 is a cylindrical tube with two open ends and a hollow center, an opening penetrating along the axial direction is formed on the side wall of the cylindrical tube, the two sides of the opening are respectively provided with a convex strip extending to the outside in an integrated vertical forming mode, a convex strip is penetrated through by a screw rod 32, one end of the screw rod 32 is connected with a abutting nut 33, and the other end of the screw rod 32 is connected with a quick-release. The length of the screw rod 32 can be changed by pulling the quick-release handle 34, the length of the screw rod 32 is increased, the opening width of the elastic cylinder 31 is increased, and the clamping effect on the steel needle is released, so that the steel needle can be taken down from the needle cylinder; the length of the screw 32 is reduced, the opening width of the elastic tube 31 is reduced, and the inner diameter of the elastic tube 31 is reduced so as to firmly clamp the steel needle.

The telescopic rod 5 comprises a stud 51, one end of the stud 51 is fixed on the ball joint 6, an outer sleeve 52 is sleeved on the stud 51 in a sliding mode, the outer sleeve 52 is fixed on the second needle cylinder 4, and a locking nut 53 is connected to the stud 51 in a threaded mode. When the length of the telescopic rod 5 is adjusted, after the outer sleeve 52 is held and axially slides to a proper position, the locking nut 53 is rotated until the end face of the locking nut is tightly abutted against the end face of the outer sleeve 52, and the outer sleeve can be prevented from retracting through the blocking effect of the locking nut 53.

After the length of the telescopic rod 5 is adjusted, the angle of the ball joint 6 is adjusted. The ball joint 6 comprises a ball 61 and a ball seat 62 with a ball slot 621, the ball seat 62 is fixedly connected to the first syringe 3 through the extension rod 35, and the ball 61 is fixedly connected to the stud 51 of the telescopic rod 5.

The locking nail 7 is in threaded connection with the ball head seat 62, the locking nail 7 passes through the ball head groove 621 from the outside of the ball head seat 62, and one end of the locking nail 7 adjacent to the ball head groove 621 is provided with a spherical groove corresponding to the ball head 61. A disc is fixed at one end of the locking nail 7 positioned outside the ball seat 62, and anti-skid teeth are processed on the side surface of the disc. When the ball head 61 needs to be rotated to change the angle, the end face of one end, provided with the spherical groove, of the locking nail 7 is not higher than the bottom face of the ball head groove 621, after the ball head 61 rotates to a proper angle, the locking nail 7 is rotated to enable the spherical groove to abut against the ball head 61, and the ball head 61 and the ball head groove 621 are under the pushing action of the locking nail 7, so that the ball head 61 is limited from rotating relative to the ball head seat 62 any more, and the effect of the locking ball head joint 6 is achieved.

Claims

1. The utility model provides a radius distal end struts ware, its characterized in that includes first steel needle (1) and second steel needle (2), first steel needle (1) with second steel needle (2) can be dismantled respectively and be fixed in on first cylinder (3) and second cylinder (4), second cylinder (4) are fixed in on telescopic link (5), telescopic link (5) with first cylinder (3) are connected through bulb joint (6), be provided with locking nail (7) on bulb joint (6).

2. The distal radius spreader according to claim 1, wherein the first syringe (3) and the second syringe (4) have the same structure, and each syringe comprises an elastic cylinder (31) with an opening, a screw rod (32) penetrates through the elastic cylinder (31), one end of the screw rod (32) is connected with a pressing nut (33), and the other end of the screw rod (32) is connected with a quick release handle (34).

3. The distal radius spreader according to claim 1, wherein the ball joint (6) comprises a ball head (61) and a ball head seat (62) with a ball head slot (621), the ball head seat (62) is fixedly connected to the first syringe (3) through an extension rod (35), and the ball head (61) is fixedly connected to the telescopic rod (5).

4. The distal radius spreader according to claim 3, wherein the locking nail (7) is screwed on the ball socket (62), the locking nail (7) passes from the outside of the ball socket (62) to the ball socket (621), and one end of the locking nail (7) adjacent to the ball socket (621) is provided with a spherical groove corresponding to the ball head (61).

5. The distal radius spreader according to claim 4, wherein a disc is fixed to the end of the locking nail (7) located outside the ball seat (62), and anti-slip teeth are machined on the side surface of the disc.

6. The distal radius spreader according to claim 1, wherein the telescopic rod (5) comprises a stud (51), one end of the stud (51) is fixed on the ball joint (6), an outer sleeve (52) is slidably sleeved on the stud (51), the outer sleeve (52) is fixed on the second needle cylinder (4), and a locking nut (53) is connected to the stud (51) in a threaded manner.

7. The distal radius spreader according to claim 1, wherein the first steel needle (1) and the second steel needle (2) are both threaded k-wires.