CN213940923U

CN213940923U - Intramedullary nail

Info

Publication number: CN213940923U
Application number: CN202020880010.XU
Authority: CN
Inventors: 赵建国
Original assignee: Jiangsu National Medical Equipment Co ltd
Current assignee: Jiangsu National Medical Equipment Co ltd
Priority date: 2020-05-23
Filing date: 2020-05-23
Publication date: 2021-08-13
Anticipated expiration: 2030-05-23

Abstract

The application discloses intramedullary nail, including pin fin portion, nail body portion and nail afterbody, its characterized in that: the nail head portion is equipped with primary and secondary hole, be equipped with two first screws of intermeshing in the primary and secondary hole, the protruding square stopper that is equipped with of spiral shell head of first screw, two be equipped with the limiting plate between the first screw, be equipped with on the limiting plate and supply two square stoppers to insert the square through-hole of establishing, the limiting plate passes through the spiral shell head fixed connection of bolt and first screw. This intramedullary nail produces stress through the form of primary and secondary screw each other, avoids the screw not hard up to the cooperation of limiting plate and stopper avoids the self rotation of screw not hard up, and stable effect is better, prevents that the screw is not hard up to drop, avoids the production of potential safety hazard.

Description

Intramedullary nail

Technical Field

The application relates to the field of medical instruments, in particular to an intramedullary nail.

Background

In recent years, gamma-type intramedullary nails are commonly used clinically to treat the fracture. The gamma intramedullary nail has little influence on the fracture end, adopts intramedullary fixation, ensures that the fixed axis is close to the axis of the femur, bears the minimum tensile stress and compressive stress, has the minimum stress shielding of the fracture end, can realize pressurization and has a plurality of advantages. However, in most of the existing intramedullary nails, due to design defects, screws are loosened after long-term use and are seriously separated from the femur, so that potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an intramedullary nail to overcome the defects in the prior art.

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

the embodiment of the application discloses an intramedullary nail, including pin head portion, nail body portion and nail tail portion, its characterized in that: the nail head portion is equipped with primary and secondary hole, be equipped with two first screws of intermeshing in the primary and secondary hole, the protruding square stopper that is equipped with of spiral shell head of first screw, two be equipped with the limiting plate between the first screw, be equipped with on the limiting plate and supply two square stoppers to insert the square through-hole of establishing, the limiting plate passes through the spiral shell head fixed connection of bolt and first screw.

Preferably, in an intramedullary nail of the above type, the first screw is a tension screw.

Preferably, in the above intramedullary nail, the nail head is integrally formed with the shank portion and the tail portion.

Preferably, in the intramedullary nail described above, the nail body is provided with a joint fixing hole, and the second screw is provided in the joint fixing hole.

Preferably, in the intramedullary nail described above, a port of the nail head is provided with a sealing cap.

Compared with the prior art, the utility model has the advantages of:

this intramedullary nail produces stress through the form of primary and secondary screw each other, avoids the screw not hard up to the cooperation of limiting plate and stopper avoids the self rotation of screw not hard up, and stable effect is better, prevents that the screw is not hard up to drop, avoids the production of potential safety hazard.

Drawings

In order to more clearly illustrate the embodiments of the present application 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, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural view of an intramedullary nail according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in 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, the intramedullary nail in the embodiment includes a nail head portion 1, a nail body portion 2 and a nail tail portion 3, the nail head portion 1 is provided with a primary and secondary hole 101, two first screws 102 which are engaged with each other are arranged in the primary and secondary hole 101, a square limiting block 103 is convexly arranged on a screw head of each first screw 102, a limiting plate 104 is arranged between the two first screws 102, a square through hole 105 for the two square limiting blocks 103 to be inserted is arranged on the limiting plate 104, and the limiting plate 104 is fixedly connected with the screw head of each first screw 102 through a locking bolt.

Further, the first screw 102 is a tension nail.

Further, the nail head 1 is integrally formed with the nail body 2 and the nail tail 3.

Furthermore, the nail body part 2 is provided with a joint fixing hole 201, and a second screw 202 is arranged in the joint fixing hole 201.

Further, the port of the nail head 1 is provided with a sealing cap 106.

In this technical scheme, this intramedullary nail produces stress through the form of primary and secondary screw each other, avoids the screw not hard up to the cooperation of limiting plate and stopper avoids the self rotation of screw not hard up, and stable effect is better, prevents that the screw is not hard up to drop, avoids the production of potential safety hazard.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a detailed description of the present application, and it should be noted that modifications and embellishments could be made by those skilled in the art without departing from the principle of the present application, and these should also be considered as the protection scope of the present application.

Claims

1. An intramedullary nail, includes pin head portion, nail body portion and nail afterbody, its characterized in that: the nail head portion is equipped with primary and secondary hole, be equipped with two first screws of intermeshing in the primary and secondary hole, the protruding square stopper that is equipped with of spiral shell head of first screw, two be equipped with the limiting plate between the first screw, be equipped with on the limiting plate and supply two square stoppers to insert the square through-hole of establishing, the limiting plate passes through the spiral shell head fixed connection of bolt and first screw.

2. An intramedullary nail according to claim 1, wherein: the first screw is a tension nail.

3. An intramedullary nail according to claim 1, wherein: the nail head part, the nail body part and the nail tail part are integrally formed.

4. An intramedullary nail according to claim 1, wherein: the nail body part is provided with a joint fixing hole, and a second screw is arranged in the joint fixing hole.

5. An intramedullary nail according to claim 1, wherein: and a sealing cap is arranged at the port of the nail head part.