CN210903300U

CN210903300U - Internal fixing device for patellar fracture

Info

Publication number: CN210903300U
Application number: CN201920313571.9U
Authority: CN
Inventors: 李彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-12
Filing date: 2019-03-12
Publication date: 2020-07-03
Anticipated expiration: 2029-03-12

Abstract

The utility model provides a patella fracture internal fixation device relates to medical instrument technical field, has solved among the prior art and has utilized the technical problem that the operation is complicated when utilizing the patella of the fixed fracture of ke shi needle tension band. The device comprises a fixing piece, a claw and a connecting piece, wherein the claw is arranged in the circumferential direction of the fixing piece and used for hooking a fracture block on one side of a patella fracture line; the fixing piece is also provided with a connecting hole, and the connecting piece penetrates through the connecting hole to connect the fixing piece with the fracture block on the other side of the patella fracture line; the number of the hook claw is at least one, and the hook claw is fixedly connected with the fixing piece to form an integral part, or the hook claw is detachably connected with the fixing piece. The utility model is used for an easy operation's patella fracture internal fixation device is provided.

Description

Internal fixing device for patellar fracture

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a patella fracture internal fixation device is related to.

Background

Patellar fracture is one of common fractures of knee, and the incidence rate of patellar fracture is obviously increased along with the aggravation of aging of social population and the development of transportation. The patella is the traditional Chinese medicine component of the knee extension device, and after fracture, the knee extension device is seriously damaged. Therefore, most patellar fractures require surgical treatment for the purpose of reestablishing the continuity of the knee extension device, restoring the flatness of the patellar articular surface and achieving a strong fixation that allows early movement.

In the prior art, the patella is usually internally fixed by adopting a kirschner wire tension belt (namely, the kirschner wire and the steel wire are internally fixed), the operation is to insert two kirschner wires into the patella after the fractured patella is closed, the two ends of the kirschner wires are exposed outside the patella, and the part of the patella exposed at the measurement part of the patella is taken as a fixing force point and is screwed by the steel wire. The method has the disadvantages of complex operation and low involution precision, and the kirschner wire often slides or punctures skin, which is not favorable for functional exercise after the operation.

The applicant has found that the prior art has at least the following technical problems:

in the prior art, the operation is complex when the tension band of the Kirschner wire is used for fixing the fractured patella.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a patella fracture internal fixation device to solve the technical problem that the operation is complicated when utilizing the fixed fracture's of ke shi needle tension band patella that exists among the prior art. The utility model provides a great deal of technological effect (simple structure, convenient to use, production low in manufacturing cost) that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

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

the internal fixing device for the patellar fracture comprises a fixing piece, a hook claw and a connecting piece, wherein the hook claw is arranged in the circumferential direction of the fixing piece and is used for hooking a fracture block on one side of a patellar fracture line; the fixing piece is also provided with a connecting hole, and the connecting piece penetrates through the connecting hole to connect the fixing piece with the fracture block on the other side of the patella fracture line; the number of the hook claw is at least one, the hook claw is fixedly connected with the fixing piece to form an integral part, or the hook claw is detachably connected with the fixing piece.

Preferably, the hook claw includes a connection portion and a hooking portion, and the connection portion connects the fixing member and the hooking portion.

Preferably, the cross section of the claw comprises one or more of a circle, an ellipse, a rectangle and an isosceles trapezoid.

Preferably, the fixing member has a plate-shaped structure.

Preferably, the fixing member and the finger are integrally formed.

Preferably, the patellar fracture internal fixation device is made of medical titanium or titanium alloy materials.

Preferably, the connector comprises a screw.

Preferably, the fixing member is provided with a plurality of the connection holes.

Preferably, the cross section of the connecting hole is of a circular structure.

Preferably, the outline of the fixed part is a rectangular or square structure.

The utility model discloses fixing device in patellar fracture's simple structure, during the fixed fracture's patella, only need utilize the hook to catch on the fracture piece of patellar fracture line one side, then utilize the connecting piece to fix the mounting on the fracture piece of patellar fracture line opposite side can, it is easy and simple to handle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a first structural schematic view of the patellar fracture internal fixation device of the present invention;

FIG. 2 is a second structural view of the patellar fracture internal fixation device of the present invention;

FIG. 3a is an exploded view of the second structure of the patellar fracture internal fixation device of the present invention;

FIG. 3b is an enlarged partial view of a disassembled view of a second configuration of the patella fracture internal fixation device of the present invention;

fig. 4 is a schematic structural view of the patella fracture internal fixation device of the present invention mounted on the patella.

In figure 1, a fixing member; 11. connecting holes; 2. a hook claw; 21. a connecting portion; 211. a groove; 22. a hook portion; 221. a boss member; 222. a bending region; 3. a through hole; 4. a connecting member; 5. a patella; 51. a fracture line.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1 and 4, the present invention provides an internal fixing device for patella 5 fracture, which comprises a fixing member 1, a hook 2 and a connecting member 4, wherein the hook 2 is arranged on the fixing member 1 in the circumferential direction, and the hook 2 is used for hooking a fracture block on one side of a fracture line 51 of the patella 5; the fixing piece 1 is also provided with a connecting hole, and the connecting piece 4 passes through the connecting hole 11 to connect the fixing piece 1 with a fracture block on the other side of the fracture line 51 of the patella 5; the number of the hook claw 2 is at least one, the hook claw 2 and the fixing part 1 are fixedly connected to form an integral part, or the hook claw 2 and the fixing part 1 are detachably connected. The utility model discloses 5 internal fixation devices that fracture of patella's simple structure, during the patella 5 of fixed fracture, only need utilize the knuckle 2 to catch on the fracture piece of 5 fracture line 51 one sides of patella, then utilize connecting piece 4 to fix mounting 1 on the fracture piece of 5 fracture line 51 opposite sides of patella can, it is all very convenient to use and operate.

Specifically, the hook 2 and the fixing member 1 may be detachably connected in many ways, for example, the hook 2 is clamped with the fixing member 1, or the hook 2 and the fixing member 1 are connected by a screw or a bolt. In the present embodiment, the hook 2 is preferably formed integrally with the fixing member 1.

Further, the hook 2 comprises a connecting portion 21 and a hooking portion 22, wherein the connecting portion 21 connects the fixing element 1 and the hooking portion 22, and a bending region 222 is formed on the hooking portion 22, and the bending region 222 is used for hooking a fracture block on one side of the fracture line 51 of the patella 5.

Preferably, the cross section of the hook claw 2 comprises one or more of a circle, an ellipse, a rectangle, a square, an isosceles trapezoid and the like.

Preferably, the fixing member 1 has a plate-shaped structure of a rectangular parallelepiped or a cube, and at least one connection hole 11 is formed in the fixing member 1, and the section of the connection hole 11 has a circular structure or a rectangular structure.

Preferably, in order to reduce the rejection reaction of the human body, in the present embodiment, the internal patellar fracture fixation device 5 is made of medical titanium or titanium alloy material, that is, the fixing part 1, the hook claw 2 and the connecting part 4 are all made of medical titanium or titanium alloy material.

Preferably, the connecting member 4 in this embodiment may be a screw.

Preferably, referring to fig. 2, 3a and 3b, in the present embodiment, the connection portion 21 of the hook 2 is detachably connected to the hooking portion 22. The connecting part 21 is detachably connected with the hooking part 22, so that the connecting part 21 can be matched with the hooking parts 22 with different lengths for use, and the length of the hook claw 2 can be selected and adjusted according to actual conditions.

Specifically, one end of the connecting portion 21 is connected to the fixing member 1, a groove 211 is provided on an end surface of the other end of the connecting portion 21, and through holes 3 are provided on two opposite side walls of the groove 211, and the through holes 3 penetrate through the connecting portion 21 in a radial direction of the connecting portion 21.

The end surface of the end of the hook part 22 connected to the connecting part 21 is provided with a protrusion 221, the protrusion 221 is matched with the groove 211 on the connecting part 21, and the protrusion 221 can extend into the groove 211. Meanwhile, the through hole 3 is further formed in the hooking portion 22, and the through hole 3 in the hooking portion 22 is opposite to the through hole 3 in the connecting portion 21.

When the fixing device is used, the hooking parts 22 with different lengths are selected according to the actual condition of fracture of the patella 5 of a patient, then the protrusion parts 221 on the hooking parts 22 with proper lengths extend into the grooves 211, the bolts penetrate through the connecting parts 21 and the through holes 3 on the protrusion parts 221, and the nuts are mounted at one ends of the bolts with threads, so that the connecting parts 21 and the protrusion parts 221 are fixedly connected.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The patellar fracture internal fixation device is characterized by comprising a fixing piece (1), a claw (2) and a connecting piece (4), wherein,

the hook claw (2) is arranged on the fixing piece (1) in the circumferential direction, and the hook claw (2) is used for hooking a fracture block on one side of a fracture line (51) of the patella (5); the fixing piece (1) is also provided with a connecting hole (11), and the connecting piece (4) penetrates through the connecting hole (11) to connect the fixing piece (1) with a fracture block on the other side of the fracture line (51) of the patella (5); the number of the hook claw (2) is at least one, the hook claw (2) and the fixing part (1) are fixedly connected to form an integral part, or the hook claw (2) and the fixing part (1) are detachably connected.

2. The patellar fracture internal fixation device according to claim 1, wherein the hook jaw (2) comprises a connection portion (21) and a hooking portion (22), the connection portion (21) connecting the fixation member (1) and the hooking portion (22).

3. The patellar fracture internal fixation device according to claim 1, wherein the cross-section of the finger (2) comprises one or more of a circle, an ellipse, a rectangle, an isosceles trapezoid.

4. The patellar fracture internal fixation device according to claim 1, wherein the fixation member (1) is in a plate-like structure.

5. The patellar fracture internal fixation device according to claim 1, wherein the fixing member (1) and the hook jaw (2) are integrally formed.

6. The patellar fracture internal fixation device according to claim 1, wherein the patellar fracture internal fixation device is made of medical titanium or titanium alloy material.

7. The patellar fracture internal fixation device according to claim 1, wherein the connector (4) comprises a screw.

8. The patellar fracture internal fixation device according to claim 1, wherein the fixing member (1) is provided with a plurality of the coupling holes (11).

9. The patellar fracture internal fixation device according to claim 1, wherein the coupling hole (11) has a circular configuration in cross-section.

10. The patellar fracture internal fixation device according to claim 1, wherein the external profile of the fixation component (1) is a rectangular or square structure.