CN216167790U

CN216167790U - Fixing device for patella lower pole fracture

Info

Publication number: CN216167790U
Application number: CN202122406195.8U
Authority: CN
Inventors: 李宁
Original assignee: Beijing Jishuitan Hospital
Current assignee: Beijing Jishuitan Hospital
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-05
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a fixing device for patellar lower pole fracture, which comprises two fixing strips and a plurality of wire passing devices, wherein the upper end and the lower end of the side surface of each fixing strip are respectively provided with a plurality of extending pieces, the extending pieces positioned at the same end of the side surface of each fixing strip are arranged in bilateral symmetry, the left end and the rear end of the side surface of each fixing strip are respectively provided with a cambered surface, a plurality of preset holes for the wire passing devices to pass through are respectively arranged on the opposite positions of the two fixing strips and vertical to the end surfaces of the fixing strips, the preset holes are linearly arranged at equal intervals, and the wire passing devices are of hollow structures with openings at two ends. The utility model is convenient to use, and improves the operation efficiency and the fixing effect on the fractured patella.

Description

Fixing device for patella lower pole fracture

Technical Field

The utility model relates to the field of medical instruments, in particular to a fixing device for patellar lower pole fracture.

Background

The fracture of the patella is the fracture of the patella at the lower polar part, usually does not affect the articular surface of the patella, and is generally treated by an operation. Because the lower extreme bone piece is less and the fracture is smashed, the operation difficulty and the fixed intensity that use conventional tension band mode to fix are not good enough, and the steel wire cutting lower extreme bone piece leads to internal fixation inefficacy easily appears at the in-process of postoperative knee joint function exercise to influence the healing of fracture and patient's functional recovery.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fixing device for patellar lower pole fracture, which is convenient to use and improves the fixing effect.

The technical scheme adopted by the utility model for solving the problems is as follows:

the utility model provides a fixing device of patella lower extreme fracture, including two fixed strips and a plurality of line wares of crossing, the upper end and the lower extreme of the side of fixed strip all are equipped with a plurality of extension pieces, extend piece and fixed strip formula structure as an organic whole, the extension piece that is located the same end of fixed strip side is bilateral symmetry and sets up, the left end and the rear end of the side of fixed strip are the cambered surface, perpendicular its terminal surface all offers a plurality of preset holes that are used for crossing the line ware and pass on the position that two fixed strips are relative, preset hole is equidistant sharp and arranges, it is both ends open-ended hollow structure to cross the line ware.

As a further improvement of the technical scheme, one end of the wire passing device is an oblique notch, so that the smoothness of the wire passing device when the wire passing device passes through the fixing strip and the patella is improved, the tail end of the other end of the wire passing device is provided with a limiting block, the diameter of the limiting block is larger than that of the wire passing device, and the difficulty increase of a steel wire or a titanium cable passing through the wire passing device due to the fact that the wire passing device is completely inserted into the patella is avoided.

As a further improvement of the technical scheme, the length of the fixing strip is 4-5cm, the width of the fixing strip is 5mm, and the thickness of the fixing strip is 2-3 mm.

As a further improvement of the technical scheme, the edges of the fixing strip and the extending piece are provided with arc chamfers, so that the safety of the device implanted into a human body is improved.

As a further improvement of the technical scheme, the fixing strip is made of titanium alloy or stainless steel, and the titanium alloy and the stainless steel have corrosion resistance and small biological reaction, so that the implantation safety of the device is guaranteed.

Compared with the prior art, the utility model has the following advantages and effects:

the fixing strip and the thread passing device are matched for use, so that the fixing strip, the thread passing device and the fractured patella can be bound together by the steel wire or the titanium cable, the fractured patella is fixed, the use is convenient, and the operation efficiency is improved. Simultaneously, through the extension piece that sets up on two fixed strips for two stationary blades wrap up the patella when can fix again, thereby improved the fixed intensity of device to the patella of fracture, do benefit to the fixed result of use of guarantee device. Furthermore, the preset holes are formed in the fixing strips, so that the drilling positions on the patella can be controlled conveniently, the accuracy of drilling is improved, and the use is convenient.

Drawings

Fig. 1 is a schematic structural diagram of a fixing device for patellar lower pole fracture according to the present invention.

Fig. 2 is a structural schematic diagram of a fixing device for patellar lower pole fracture in a use state.

Fig. 3 is a structural diagram illustrating a fixing state of the fixing device for patellar lower pole fracture according to the present invention.

The fixing strip comprises a fixing strip 1, a wire passing device 2, an extending sheet 3, a preset hole 4, a diagonal cut 5, a limiting block 6, a patella 7 and a steel wire 8.

Detailed Description

The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.

Referring to fig. 1, fig. 2, this embodiment is a fixing device for patella lower pole fracture, including two fixed strips 1 and three line ware 2 of crossing, the upper end and the lower extreme of the side of fixed strip 1 all are equipped with three extension pieces 3, extend piece 3 and fixed strip 1 formula structure as an organic whole, the extension piece 3 that is located the same end of fixed strip 1 side is bilateral symmetry setting, the left end and the rear end of the side of fixed strip 1 are the cambered surface, perpendicular its terminal surface all offers three preset hole 4 that is used for crossing line ware 2 and passes on two fixed strip 1 relative positions, preset hole 4 is equidistant straight line and arranges, it is both ends open-ended hollow structure to cross line ware 2.

Referring to fig. 2, one end of the wire guide 2 is a bevel notch 5, the end of the other end of the wire guide 2 is provided with a limiting block 6, and the diameter of the limiting block 6 is larger than that of the wire guide 2.

In this embodiment, the length of the fixing strip 1 is 4-5cm, the width is 5mm, the thickness is 2-3mm, the edges of the fixing strip 1 and the extending piece 3 are both provided with arc chamfers, and the fixing strip 1 is made of titanium alloy or stainless steel.

In summary, the application method of the utility model is as follows:

the method comprises the following steps: pre-shaping the two fixing strips according to the patella form of a patient, and then respectively sleeving the two fixing strips on the corresponding positions of the fractured patella;

step two: determining the drilling direction of drilling equipment according to the two corresponding preset holes on the two fixing strips, then drilling the fractured patella through the drilling equipment, and inserting a wire passing device into the holes after the drilling is finished, referring to fig. 2;

step three: the steel wire sequentially passes through the preset holes in the two fixing strips and the wire passing device inserted into the fractured patella, so that the fractured patella is fixed between the two fixing strips by the steel wire and the three form a whole, the fixing strength is guaranteed, and the reference of figure 3 is provided.

The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. A fixing device for patellar lower pole fracture is characterized in that: including two fixed strip (1) and a plurality of line ware (2) of crossing, the upper end and the lower extreme of the side of fixed strip (1) all are equipped with a plurality of extension pieces (3), extend piece (3) and fixed strip (1) formula structure as an organic whole, it is the bilateral symmetry setting to lie in the extension piece (3) of the same end of fixed strip (1) side, the left end and the rear end of the side of fixed strip (1) are the cambered surface, perpendicular its terminal surface all offers a plurality of preset holes (4) that are used for crossing line ware (2) and pass on two fixed strip (1) relative positions, preset hole (4) are equidistant sharp and arrange, it is both ends open-ended hollow structure to cross line ware (2).

2. The patellar mandibular fracture fixation device of claim 1, wherein: one end of the wire passing device (2) is an inclined notch (5), the tail end of the other end of the wire passing device (2) is provided with a limiting block (6), and the diameter of the limiting block (6) is larger than that of the wire passing device (2).

3. The patellar mandibular fracture fixation device of claim 1, wherein: the length of the fixing strip (1) is 4-5cm, the width is 5mm, and the thickness is 2-3 mm.

4. The patellar mandibular fracture fixation device of claim 1, wherein: the edges of the fixing strip (1) and the extending sheet (3) are provided with arc chamfers.

5. The patellar mandibular fracture fixation device of claim 1, wherein: the fixing strip (1) is made of titanium alloy or stainless steel.