CN216495578U

CN216495578U - Extension arm U-shaped nail

Info

Publication number: CN216495578U
Application number: CN202122493555.2U
Authority: CN
Inventors: 杨山林; 李有军
Original assignee: Hebei Botrum Medical Devices Co ltd
Current assignee: Hebei Botrum Medical Devices Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-05-13
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a long-arm U-shaped nail, belongs to the technical field of spinal internal fixation surgery, and mainly aims to reduce burrs generated after a long arm is removed and avoid the risk of secondary cutting of human soft tissues. The cutting surface generated after the extension arm part is removed is always lower than the highest surface of the U-shaped nail left in the human body, so that the soft tissue of the human body can not be injured no matter no burr is generated. Therefore, the postoperative rehabilitation is better facilitated, and the pain of the patient is reduced.

Description

Extension arm U-shaped nail

Technical Field

The utility model relates to the technical field of U-shaped nails for spinal internal fixation surgery, in particular to a technology for breaking a U-shaped nail elongated arm.

Background

A large number of U-shaped nails with the lengthened arms are used for internal fixation in the spinal surgery process, and the lengthened arms are beneficial to lifting and resetting in the surgery process. After the reduction is finished, the lengthened part of the U-shaped arm is broken and removed, a layer of burr is generated on the surface of the upper end of the broken U-shaped arm, and the burr can cause permanent damage to soft tissues of a human body, so that the operation healing time is slow. The broken part is shown in figure 2, the inner groove of the broken arm is a rectangular open groove, two breaking points B, C are generated, the outer wall of the broken groove is a V-shaped groove, the end point A of the broken groove is a breaking point, a breaking surface, an AB surface or an AC surface, is inevitably formed after the lengthened arm is removed, and finally, the AB surface or the AC surface is higher than the horizontal plane of the D surface and the D surface is a surface in contact with human soft tissues, so the generated burrs inevitably cut the soft tissue surfaces in contact with the D surface. The broken groove without the notch burrs is designed by the company according to the defects, so that the risk of cutting human soft tissues due to the burrs is avoided.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a U-shaped nail with an elongated arm, which consists of a U-shaped arm elongated part 1, a U-shaped arm fixing part 2 and a screw part 3. The U-shaped arm lengthening part 1 is used for lifting and resetting operation in the operation process, and is convenient for a doctor to operate, the U-shaped arm fixing part 2 is used for placing a connecting rod into a side opening of the U-shaped arm to screw fixing screws, namely, fixing all U-shaped nails together, the screw part 3 is used for completely screwing part of the connecting rod into corresponding bones to select a firm foundation for a fixing part, a breaking groove is arranged between the U-shaped arm lengthening part 1 and the U-shaped arm fixing part 2, and the U-shaped arm lengthening part 1 is broken and removed after the U-shaped arm lengthening part 1 is reasonably fixed. The method is characterized in that: the fracture surface of the fracture groove is lower than the upper surface of the U-shaped arm fixing part 2, the incision surface can not touch the soft tissue surface of the human body, and the risk of secondary incision is avoided.

Furthermore, a V-shaped notch is cut on the inner wall of the breaking groove, and a pre-breaking point B is formed at the sharp point of the V-shaped notch.

Furthermore, the outer wall of the breaking groove is an inverted cone, the minimum diameter part of the cone forms a pre-breaking point A, and the lengthened part 1 of the broken U-shaped arm forms a breaking surface AB surface.

Furthermore, the pre-breaking point of the A and the sharp point of the V-shaped notch form a pre-breaking point B on the same horizontal plane.

Further, the highest face of U type arm fixed part 2 is the C face, and the C face is the fillet, and the C face is higher than cutting off department AB face, even the AB face produces slight burr and also can not be higher than the C face.

The utility model has the following advantages:

the burr amount at the broken surface of 1 is less.

2 the contact surface of the soft tissue of the human body is in a circular arc state, so that the risk of cutting the soft tissue is avoided for the second time.

3, the processing is convenient, and the popularization and the use are easy.

Drawings

FIG. 1 is a general schematic view of a modified front long arm staple of the present invention.

FIG. 2 is an enlarged view of a staple severing groove of the present invention with modified front long arms.

Fig. 3 is an overall schematic view of the present invention.

Fig. 4 is an enlarged view of the cutting groove of the present invention.

Detailed Description

The operation of the present invention is described below:

1 use in spinal orthopaedic surgery: the spine is not in accordance with the curvature of the physiological curvature due to congenital or acquired pathological changes, which not only affects the personal image of the patient, but also causes various functional disorders of his viscera. In the operation, the long-arm U-shaped nail is used for orthopedic reduction operation, the screw part 3 of the long-arm U-shaped nail is screwed into the corresponding spine, finally, a doctor slowly lifts each long-arm U-shaped nail according to the bending condition until each spine is reduced to a reasonable position, and then a corresponding orthopedic rod and a connecting hook are installed. After the fixing part 2 of the long-arm U-shaped nail, the orthopedic rod and the connecting hook are reasonably fixed, the lengthening part 1 of the long-arm U-shaped nail is broken off by using a socket wrench, and then the installation of the orthopedic tool is completed.

2 backbone slippage or wound operation, the screw part 3 of long arm U type nail can be fixed more in a flexible way for universal bulb structure like this, the screw part can use long arm U type nail fixed part 2 to deviate 360 degrees rotations behind certain angle as the axle center, lead to the backbone bone to warp when the backbone slippage because of the trauma, with the screw part 3 of long arm U type nail twist corresponding spinal bone after, carry the extension 1 of long arm U type nail, draw the backbone of warping and fix after the normal position. After the fixing is finished, the lengthening part 1 of the long-arm U-shaped nail is broken off by a wrench.

Claims

1. The utility model provides a long arm U type nail, by U type arm extension 1, U type arm fixed part 2, screw portion 3 constitutes its characterized in that: the fracture surface of the fracture groove is lower than the upper surface of the U-shaped arm fixing part 2, the incision surface can not touch the soft tissue surface of the human body, and the risk of secondary incision is avoided.

2. A long arm staple according to claim 1, wherein: the inner wall of the breaking groove is cut with a V-shaped open groove, and a pre-breaking point B is formed at the sharp point of the V-shaped cut.

3. A long arm staple according to claim 1, wherein: the outer wall of the breaking groove is a cone with an inverted cone shape, the minimum diameter part of the cone forms a pre-breaking point A, and the lengthened part 1 of the broken U-shaped arm forms a breaking surface AB surface.

4. A long arm staple according to claim 1, wherein: the pre-section A and the sharp point of the V-shaped notch form a pre-section B on the same horizontal plane.

5. A long arm staple according to claim 1, wherein: the highest face of U type arm fixed part 2 is the C face, and the C face is the fillet, and the C face is higher than cutting off department AB face, even the AB face produces slight burr and also can not be higher than the C face.