CN210697800U

CN210697800U - Double-end forcing screw

Info

Publication number: CN210697800U
Application number: CN201921101221.2U
Authority: CN
Inventors: 顾延庆; 徐晨阳; 蒋纯志
Original assignee: Nanjing First Hospital
Current assignee: Nanjing First Hospital
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-06-09
Anticipated expiration: 2029-07-15

Abstract

The utility model relates to the technical field of compression screws, in particular to a double-headed compression screw, which comprises a screw body, wherein the outer wall of the screw body is provided with screw threads, the top of the screw body is provided with a bolt head, the outer wall of the bottom of the bolt head is provided with an inclined plane, the bottom of the inclined plane is provided with a cushion block, the top of the screw body is provided with a gasket near the bolt head, the gasket is of a circular structure, the bottom of the screw body is provided with a drill bit, the bottom of the screw body is provided with a bolt cap near the drill bit, and the bolt; one side of the drill bit close to the nail body is tightly welded with a threaded column, and the bottom end of the nail body is provided with a threaded hole in threaded connection with the threaded column. In this double-end compression screw, the head of tying can realize the double-end and pressurize simultaneously with tying the cap, can effectually make the width of tibial plateau fracture resume, and screw thread extension rod and screwed pipe can effectively adjust the length of screw, are convenient for fix the shin bone of different width, and gasket and cushion can play certain cushioning effect, avoid tying the head and excessively extrude the damage that causes the bone.

Description

Double-end forcing screw

Technical Field

The utility model relates to a forcing screw technical field specifically is a double-end forcing screw.

Background

When the tibial plateau is fractured, the width of the plateau is increased, but when the fracture of the existing steel plate screw system is comminuted fracture, the compression screw cannot effectively play a role in compression, the width of the tibial plateau fracture cannot be effectively recovered, the length of the screw cannot be adjusted, the tibia with different widths cannot be effectively used, in addition, the screw fixation is too tight, certain damage can be caused to the bone, and therefore the double-head compression screw is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double-end forcing screw to when the current steel sheet screw system that proposes in solving above-mentioned background art is comminuted fracture at the fracture, forcing screw can not effectually play the pressurization effect, and the length of screw can not be adjusted, can not effectively use the shin bone of different widths, and the screw fixation can lead to the fact certain damage scheduling problem to the bone too tightly.

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

a double-headed compression screw comprises a screw body, wherein threads are arranged on the outer wall of the screw body, a bolt head is arranged at the top of the screw body, an inclined plane is arranged on the outer wall of the bottom of the bolt head, a cushion block is arranged at the bottom of the inclined plane, a gasket is arranged at the top of the screw body close to the bolt head, the gasket is of a circular structure, a drill bit is arranged at the bottom end of the screw body, a bolt cap is arranged at the bottom end of the screw body close to the drill bit, the spiral direction of the internal threads of the bolt cap is opposite to that of the threads, and the bolt cap is in threaded connection with; the top of the bolt head is provided with a groove which is of a star-shaped structure, one side of the drill bit, which is close to the nail body, is tightly welded with a threaded column, and the bottom end of the nail body is provided with a threaded hole in threaded connection with the threaded column; the screw is characterized in that a threaded extension rod is arranged at the top end of the screw body, the threaded extension rod and the screw body are of an integrally formed structure, a threaded pipe is connected to the top end of the threaded extension rod in a threaded mode, and the top end of the threaded pipe and the bolt head are of an integrally formed structure.

Preferably, the cross section of the bolt head is of a circular structure.

Preferably, the top of the cushion block is tightly adhered to the inclined surface, and the bottom of the cushion block is tightly adhered to the gasket.

Preferably, the middle part of the gasket is provided with an opening, and the gasket is in sleeve fit with the nail body.

Preferably, a gap is left between the top end of the thread and the gasket.

Preferably, the drill bit is of a conical configuration.

Preferably, the nail body is of a cylindrical structure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the double-head compression screw, the double-head simultaneous compression can be realized through the bolt head and the bolt cap arranged in the double-head compression screw, and the width of the tibial plateau fracture can be effectively recovered.

2. In this double-end forcing screw, the length that can effectively adjust the screw through the screw thread extension rod that wherein sets up and screwed pipe is convenient for fix the shin bone of different widths.

3. In this double-end forcing screw, can play certain cushioning effect through the gasket and the cushion that wherein set up, avoid the tieing head to excessively extrude the damage that causes the bone.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of the plug head of the present invention;

FIG. 3 is a schematic perspective view of a drill according to the present invention;

fig. 4 is a schematic view of the present invention.

In the figure: 1. a nail body; 11. a thread; 12. a threaded extension rod; 2. a bolt head; 21. a bevel; 22. cushion blocks; 23. a gasket; 24. a groove; 25. a threaded pipe; 3. a bolt cap; 4. a drill bit; 41. a threaded post.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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 work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a double-headed compression screw comprises a screw body 1, the screw body 1 is of a cylindrical structure, the outer wall of the screw body 1 is provided with threads 11, the top of the screw body 1 is provided with a bolt head 2, the outer wall of the bottom of the bolt head 2 is provided with an inclined surface 21, the bottom of the inclined surface 21 is provided with a cushion block 22, the top of the screw body 1, which is close to the bolt head 2, is provided with a gasket 23, the gasket 23 is of a circular structure, the gasket 23 and the cushion block 22 can cushion the bottom of the bolt head 2 to achieve a certain buffering effect, so that the damage caused by over-compression of the bolt head 2 on a bone is avoided, the bottom of the screw body 1 is provided with a drill bit 4 for driving the screw body 1 into the bone, the bottom of the screw body 1, which is close to the drill bit 4, is provided with a bolt cap 3, the internal threads of the bolt cap 3 are opposite to the spiral direction of the threads 11, the bolt cap 3 is in threaded connection with the, the double-head pressurizing effect is achieved on the bone; the top of nail body 1 is provided with screw thread extension rod 12, and screw thread extension rod 12 is the integrated into one piece structure with nail body 1, and the top threaded connection of screw thread extension rod 12 has screwed pipe 25, and the top of screwed pipe 25 is the integrated into one piece structure with tieing head 2, through rotating screwed pipe 25, can stretch out screw thread extension rod 12 to the length of whole screw of extension is convenient for pressurize fixedly to the shin bone of different widths.

As shown in fig. 2 and 3, the top of the bolt head 2 is provided with a groove 24, the groove 24 is of a star-shaped structure, when the bolt head 2 is rotated by a screwdriver or other tools, the abrasion of the groove 24 can be reduced, the holding force is increased, one side of the drill bit 4 close to the nail body 1 is tightly welded with a threaded column 41, the bottom end of the nail body 1 is provided with a threaded hole in threaded connection with the threaded column 41, the drill bit 4 is convenient to detach and install, and the drill bit 4 can be detached after the nail body 1 penetrates through a bone.

Specifically, the cross section of the bolt head 2 is of a circular structure, so that the outer wall is smooth, and rubbing with a human tissue assembly is avoided.

In addition, the top of the cushion block 22 is tightly adhered to the inclined surface 21, and the bottom of the cushion block 22 is tightly adhered to the gasket 23, so that the cushion block 22 and the gasket 23 are fixed.

Furthermore, the middle part of the gasket 23 is provided with an opening, and the gasket 23 is in sleeve fit with the nail body 1, so that the bolt head 2 is separated from the steel plate for fixing by the gasket 23, as shown in fig. 4.

Further, a gap is left between the top end of the thread 11 and the gasket 23 for placing a steel plate.

Furthermore, the drill bit 4 is of a conical structure, so that the nail body 1 can be conveniently nailed into the bone.

The double-end forcing screw of this embodiment is when using, at first punch patient's tibial plateau department, paste the steel sheet at tibial plateau's outer wall again, in 4 nail holes of the drill bit of 1 one end of nail body, rotate tieing 2, make nail body 1 slowly get into, to the shin bone of different width, stretch out screw thread extension rod 12 through rotating screwed pipe 25, thereby prolong whole screw, be convenient for fix, it runs through behind the tibial plateau to nail body 1, one end is screwed up through tieing cap 3, both ends pressurization makes nail body 1 fixed, tieing 2 compresses tightly cushion 22 and gasket 23, and then compress tightly the steel sheet, apply horizontal pressure to the steel sheet, make the steel sheet hug closely one side at tibial plateau, provide fine holding power to tibial plateau, can set up a plurality of double-end forcing screw on a slice of steel sheet, thereby guarantee that the steel sheet is closely fixed, the patient of being convenient for resumes.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a double-end forcing screw, includes nail body (1), its characterized in that: the outer wall of the nail body (1) is provided with threads (11), the top of the nail body (1) is provided with a bolt head (2), the outer wall of the bottom of the bolt head (2) is provided with an inclined plane (21), the bottom of the inclined plane (21) is provided with a cushion block (22), the top of the nail body (1) close to the bolt head (2) is provided with a gasket (23), the gasket (23) is of a circular structure, the bottom end of the nail body (1) is provided with a drill bit (4), the bottom end of the nail body (1) close to the drill bit (4) is provided with a bolt cap (3), the internal threads of the bolt cap (3) are opposite to the spiral direction of the threads (11), and the bolt cap (3) is in threaded connection with the nail body (1); the top of the bolt head (2) is provided with a groove (24), the groove (24) is of a star-shaped structure, one side, close to the nail body (1), of the drill bit (4) is tightly welded with a threaded column (41), and the bottom end of the nail body (1) is provided with a threaded hole in threaded connection with the threaded column (41); the improved nail is characterized in that a thread extension rod (12) is arranged at the top end of the nail body (1), the thread extension rod (12) and the nail body (1) are of an integrally formed structure, a threaded pipe (25) is connected to the top end of the thread extension rod (12) in a threaded mode, and the top end of the threaded pipe (25) and the bolt head (2) are of an integrally formed structure.

2. The double-ended compression screw of claim 1, wherein: the cross section of the bolt head (2) is of a circular structure.

3. The double-ended compression screw of claim 1, wherein: the top of the cushion block (22) is tightly bonded with the inclined surface (21), and the bottom of the cushion block (22) is tightly bonded with the gasket (23).

4. The double-ended compression screw of claim 1, wherein: the middle part of the gasket (23) is provided with an opening, and the gasket (23) is in sleeve joint with the nail body (1).

5. The double-ended compression screw of claim 1, wherein: a gap is reserved between the top end of the thread (11) and the gasket (23).

6. The double-ended compression screw of claim 1, wherein: the drill bit (4) is of a conical structure.

7. The double-ended compression screw of claim 1, wherein: the nail body (1) is of a cylindrical structure.