CN212592247U

CN212592247U - Bone drag hook with direction function

Info

Publication number: CN212592247U
Application number: CN202020112115.0U
Authority: CN
Inventors: 傅德皓; 肖宝钧; 刘松相; 李锐; 刘国辉; 杨述华
Original assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Current assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2021-02-26
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a bone drag hook with direction function, including draw hook section and handle section, draw hook section front end is equipped with two arc drag hook branches, the angle between two arc drag hook branches is 45 at least, draw hook section rear end is connected with handle section one end, draw hook section middle part is equipped with the guide post, be equipped with the guiding hole that runs through both ends about it in the guide post, the guide post is located the axis of guiding hole directly over two arc drag hook branches and the mid point of two arc drag hook branch front end lines, be Z type structure after the draw hook section is connected with the handle section, be equipped with the side fluting that runs through guiding hole pore wall and guide post outer wall on the guide post. The bone nail resetting and guiding device has the advantages that the guiding column is designed in the middle of the drag hook section, so that the bone drag hook integrates the resetting and guiding functions, the step of placing the bone nail is simplified, and the accuracy of placing the bone nail is improved; the front end of the drag hook section is designed to be of a structure with two arc-shaped drag hook branches, so that the force for clamping the bone surface at the front end of the drag hook section is improved, and the reliability of the instrument is enhanced.

Description

Bone drag hook with direction function

Technical Field

The utility model relates to the technical field of orthopedic medical equipment, in particular to a bone drag hook with a guiding function.

Background

The bone drag hook is a common instrument in orthopedic surgery and has a structure that a straight rod with a single arc-shaped drag hook branch is arranged at the front end. In the fracture reduction operation, the bone drag hook is used for tensioning the bone surface to realize reduction, and then the bone nail is placed to complete fixation. The inventor finds that the steps of the fracture reduction operation are too complicated, the operation time is prolonged, and the single arc-shaped drag hook branch is easy to slide, so that the reduction effect is influenced. Therefore, there is a need for an improved conventional bone retractor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to existing technical current situation, provide a bone drag hook with direction function, make bone drag hook collection restore to the throne and direction function in an organic whole, simplified the step that the bone nail was put into, improved the precision that the bone nail was put into, improved the dynamics of the tight bone face of drag hook section front end card simultaneously, strengthened the reliability of apparatus.

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

the utility model provides a bone drag hook with direction function, includes draw hook section and handle section, draw hook section front end is equipped with two arc drag hook branches, and the angle between two arc drag hook branches is 45 at least, and draw hook section rear end is connected with handle section one end, and draw hook section middle part is equipped with the guide post, is equipped with the guiding hole that runs through its upper and lower both ends in the guide post, and the guide post is located two arc drag hook branches directly over and the mid point of two arc drag hook branch front end lines is located the axis of guiding hole.

Furthermore, the draw hook section is in a Z-shaped structure after being connected with the handle section.

Further, the diameter of the guide hole is at least 2.5 mm.

Furthermore, the guide post is provided with a side slot which penetrates through the wall of the guide hole and the outer wall of the guide post, and the width of the side slot is not less than the diameter of the guide hole.

Further, the handle means is of a T-shaped structure.

The utility model has the advantages that:

compared with the prior art, the bone drag hook with the guiding function is provided with the guide post in the middle of the drag hook section, so that the bone drag hook integrates the functions of resetting and guiding, the step of bone nail implantation is simplified, and the accuracy of bone nail implantation is improved; the front end of the drag hook section is designed to be of a structure with two arc-shaped drag hook branches, so that the force for clamping the bone surface at the front end of the drag hook section is improved, and the reliability of the instrument is enhanced.

Drawings

FIG. 1 is a schematic structural view of the bone retractor of the present invention;

fig. 2 is a schematic structural diagram of the guide post of the present invention.

Description of the labeling: 1. the device comprises a draw hook section 1-1, an arc draw hook branch 2, a handle means 3, a guide post 4, a guide hole 5 and a side open groove.

Detailed Description

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

Referring to fig. 1, a bone retractor with guiding function comprises a retractor section 1 and a handle section 2, wherein two arc-shaped retractor branches 1-1 are arranged at the front end of the retractor section 1, the angle between the two arc-shaped retractor branches 1-1 is at least 45 degrees, and the rear end of the retractor section 1 is connected with one end of a handle means 2. The front end of the draw hook section 1 is designed to be provided with a structure with two arc-shaped draw hook branches 1-1, so that the front end of the draw hook section 1 is similar to two enlarged sawteeth, the force for clamping the bone surface at the front end of the draw hook section 1 is improved, and the reliability of the instrument is enhanced.

The middle part of the draw hook section 1 is provided with a guide post 3, the guide post 3 is internally provided with a guide hole 4 penetrating through the upper end and the lower end of the guide post, the diameter of the guide hole 4 is at least 2.5mm, the guide post 3 is positioned right above the two arc draw hook branches 1-1, and the midpoint of the connecting line of the front ends of the two arc draw hook branches 1-1 is positioned on the central axis of the guide hole 4. The bone nail is placed into the area between the two arc-shaped drag hook branches 1-1 through the guide hole 4, so that the bone drag hook integrates the functions of resetting and guiding, the step of placing the bone nail is simplified, and the accuracy of placing the bone nail is improved.

Preferably, the hook section 1 and the handle section 2 are connected to form a Z-shaped structure to form a staggered structure, and an operation space is reserved for placing the bone nail. The handle means 2 is a T-shaped structure, and compared with a handle with a linear structure, the handle with the T-shaped structure can bear larger pulling force without slipping.

Preferably, as shown in fig. 2, the guide post 3 is provided with a side slot 5 penetrating through the hole wall of the guide hole 4 and the outer wall of the guide post 3, and the width of the side slot 5 is not less than the diameter of the guide hole 4. After the bone nail is placed in, the bone drag hook is pushed downwards to separate the two arc drag hook branches 1-1 from the bone surface, the bone drag hook is laterally moved, the guide post 3 is separated from the tail section of the bone nail along the lateral slot 5, and if the lateral slot 5 is not designed, the bone drag hook is very difficult to take down.

Of course, the above is only the preferred embodiment of the present invention, and the application range of the present invention is not limited thereto, so all the equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a bone drag hook with direction function which characterized in that: including drag hook section and handle section, drag hook section front end is equipped with two arc drag hook branches, and the angle between two arc drag hook branches is 45 at least, and drag hook section rear end is connected with handle section one end, and drag hook section middle part is equipped with the guide post, is equipped with the guiding hole that runs through its upper and lower both ends in the guide post, and the guide post is located two arc drag hook branches directly over and the mid point of two arc drag hook branch front end lines is located the axis of guiding hole.

2. The bone retractor with guiding function as claimed in claim 1, wherein: the pull hook section and the handle section are connected to form a Z-shaped structure.

3. The bone retractor with guiding function as claimed in claim 1, wherein: the diameter of the guide hole is at least 2.5 mm.

4. The bone retractor with guiding function as claimed in claim 1, wherein: the guide post is provided with a side slot which penetrates through the wall of the guide hole and the outer wall of the guide post, and the width of the side slot is not less than the diameter of the guide hole.

5. The bone retractor with guiding function as claimed in claim 1, wherein: the handle means is of a T-shaped structure.