CN211381708U

CN211381708U - Hollow screw

Info

Publication number: CN211381708U
Application number: CN201921422539.0U
Authority: CN
Inventors: 关博艺
Original assignee: Guangzhou Kangjun Medical Equipment Co ltd
Current assignee: Guangzhou Kangjun Medical Equipment Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-09-01
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a hollow screw, including the first nail body, the second nail body and regulating block, the first nail body is connected with the one end of regulating block, second nail body part is located the regulating block inside and rather than inner wall sliding connection, all constitute on the first nail body and the second nail body and be equipped with the through-hole, the one side of the relative first nail body of the second nail body is rotated and is connected with a screw thread section of thick bamboo, screw thread section of thick bamboo female connection has the threaded rod, the inner wall fixed connection of threaded rod and regulating block, be equipped with adjustment mechanism between screw thread section of thick bamboo and the regulating block, be equipped with stop gear between the inner wall of the second nail body and regulating block. The utility model discloses it is rational in infrastructure, also can finely tune it when can adjusting the second nail body, demand when satisfying the backbone surgeon actual operation, and simple structure convenient operation, easily batch production, low in production cost.

Description

Hollow screw

Technical Field

The utility model relates to a cavity screw technical field especially relates to a cavity screw.

Background

The prior art discloses the application numbers as follows: a hollow screw of CN 201721572339.4; the clamping nail comprises a first nail body, wherein a first thread is arranged on the side wall of the first nail body, an adjusting block is arranged at one end of the first nail body, a cavity is arranged in the adjusting block, a second nail body is arranged in the cavity, a second thread is arranged on the side wall of the second nail body, through holes are formed in the first nail body and the second nail body and penetrate through the first nail body and the second nail body, a groove is formed in the side wall of the second nail body in the cavity, the bottom of the groove is connected with a clamping block through a plurality of springs, and a plurality of clamping grooves matched with the clamping block are formed in the side wall of the second nail body in a surrounding mode; the device is convenient to operate, can play a role in fixing and fusing two adjacent vertebral bodies, overcomes the defect that the conventional screw cannot be adjusted, and can compress and expand the two adjacent vertebral bodies according to the judgment of a spinal surgeon.

The defects that the second nail body cannot be finely adjusted, the requirement of a vertebra shell doctor in actual operation cannot be met, and the pain of a patient can be increased; secondly, the structure is complex, the production is difficult and tedious, and the production cost is increased, so that a hollow screw is designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the cavity screw that proposes, it can also finely tune it when adjusting the second nail body, demand when satisfying the backbone surgeon actual operation, and simple structure convenient operation, easily batch production, low in production cost.

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

the utility model provides a hollow screw, includes the first nail body, the second nail body and regulating block, the first nail body is connected with the one end of regulating block, the second nail body part is located the regulating block inside and rather than inner wall sliding connection, all constitute on the first nail body and the second nail body and be equipped with the through-hole, the one side of the relative first nail body of the second nail body is rotated and is connected with a screw thread section of thick bamboo, screw thread section of thick bamboo female connection has the threaded rod, the inner wall fixed connection of threaded rod and regulating block, be equipped with adjustment mechanism between screw thread section of thick bamboo and the regulating block, be equipped with stop gear between the inner wall of the second nail body and regulating block.

Preferably, the outer walls of the first nail body and the second nail body are provided with threads.

Preferably, a screwdriver groove is formed in the face, opposite to the first nail body, of the second nail body.

Preferably, adjustment mechanism establishes the first bevel gear of fixing at the screw thread section of thick bamboo outer wall including the cover, it is equipped with the sleeve to run through on the regulating block, the sleeve internal rotation is connected with the dwang, fixedly connected with and first bevel gear intermeshing's second bevel gear on the dwang, the other end fixedly connected with of dwang turns round the piece.

Preferably, stop gear is including fixing the cavity pole on the second nail body, the inner wall fixedly connected with slide bar of regulating block, the slide bar runs through cavity pole and rather than inner wall sliding connection.

Preferably, a sealing gasket is arranged between the second nail body and the inner wall of the adjusting block.

Compared with the prior art, the utility model, its beneficial effect does:

the utility model discloses, when needs fine setting to the second nail body, rotate the rotation that turns round the piece and drive dwang and second bevel gear, second bevel gear rotates the rotation that drives first bevel gear and screw thread section of thick bamboo, take place to rotate between screw thread section of thick bamboo and the threaded rod, so can realize that the threaded rod contracts in screw thread section of thick bamboo, drip the second nail body and contract in the regulating block, realize the fine setting to the second nail body, demand when satisfying the backbone surgeon actual operation, moreover, the steam generator is simple in structure, and is convenient for operation.

To sum up, the utility model discloses it is rational in infrastructure, also can finely tune it when can adjusting the second nail body, demand when satisfying the backbone surgeon actual operation, and simple structure convenient operation, easily batch production, low in production cost.

Drawings

Fig. 1 is a schematic structural view of a hollow screw according to the present invention;

fig. 2 is an enlarged view of a structure a in fig. 1.

In the figure: 1 a first nail body, 2 a second nail body, 3 an adjusting block, 4 through holes, 5 threaded cylinders, 6 threaded rods, 7 a first bevel gear, 8 a second bevel gear, 9 hollow rods, 10 sliding rods, 11 screwdriver grooves, 12 rotating rods, 13 sleeves and 14 twisting blocks.

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.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Referring to fig. 1-2, a hollow screw comprises a first screw body 1, a second screw body 2 and an adjusting block 3, wherein the first screw body 1 is connected with one end of the adjusting block 3, and a screwdriver slot 11 is formed in the surface, opposite to the first screw body 1, of the second screw body 2, so that the second screw body 2 can be adjusted conveniently; the second nail body 2 is partially positioned inside the adjusting block 3 and is in sliding connection with the inner wall of the adjusting block, and the adjusting block 3 is a hollow rod with an opening at one end; a sealing gasket is arranged between the second nail body 2 and the inner wall of the adjusting block 3, so that tissue fluid or blood in the vertebra is prevented from entering the adjusting block 3.

The first nail body 1 and the second nail body 2 are respectively provided with a through hole 4, and the outer walls of the first nail body 1 and the second nail body 2 are respectively provided with a thread; one surface of the second nail body 2, which is opposite to the first nail body 1, is rotatably connected with a thread cylinder 5, and the thread cylinder 5 is connected with the second nail body 2 through laser welding; the threaded cylinder 5 is internally threaded with a threaded rod 6, and the threaded rod 6 is fixedly connected with the inner wall of the adjusting block 3.

An adjusting mechanism is arranged between the threaded cylinder 5 and the adjusting block 3, the adjusting mechanism comprises a first bevel gear 7 which is sleeved and fixed on the outer wall of the threaded cylinder 5, a sleeve 13 penetrates through the adjusting block 3, and a mounting hole of the sleeve 13 penetrates through the adjusting block 3; a rotating rod 12 is rotatably connected in the sleeve 13, a second bevel gear 8 which is meshed with the first bevel gear 7 is fixedly connected to the rotating rod 12, a twisting block 14 is fixedly connected to the other end of the rotating rod 12, and a rubber protection pad is arranged on the twisting block 14 to prevent hands from being scratched.

Be equipped with stop gear between the inner wall of the second nail body 2 and regulating block 3, stop gear is including fixing the cavity pole 9 on the second nail body 2, and the inner wall fixedly connected with slide bar 10 of regulating block 3, slide bar 10 run through cavity pole 9 and rather than inner wall sliding connection, through the cooperation of cavity pole 9 with slide bar 10, prevent the second nail body 2 and rotate, guarantee the second nail body 2 at the stable removal in the regulating block 3.

The utility model discloses in, when needs finely tune the second nail body 2, the doctor can rotate and turn round piece 14, turn round piece 14 and rotate the rotation that drives dwang 12 and second bevel gear 8, second bevel gear 8 rotates the rotation that drives first bevel gear 7 and screw thread section of thick bamboo 5, take place to rotate between screw thread section of thick bamboo 5 and the threaded rod 6, so can realize that threaded rod 6 contracts in screw thread section of thick bamboo 5, it contracts in regulating block 3 to drip second nail body 2, the realization is to the fine setting of second nail body 2 (also to its flexible regulation), demand when satisfying the backbone surgeon actual operation, moreover, the steam generator is simple in structure, and convenient for operation.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a hollow screw, includes the first nail body (1), the second nail body (2) and regulating block (3), its characterized in that, the first nail body (1) is connected with the one end of regulating block (3), the second nail body (2) part is located regulating block (3) inside and rather than inner wall sliding connection, all constitute on the first nail body (1) and the second nail body (2) and be equipped with through-hole (4), the one side rotation of the relative first nail body (1) of the second nail body (2) is connected with a screw thread section of thick bamboo (5), screw thread section of thick bamboo (5) female connection has threaded rod (6), the inner wall fixed connection of threaded rod (6) and regulating block (3), be equipped with adjustment mechanism between screw thread section of thick bamboo (5) and regulating block (3), be equipped with stop gear between the inner wall of the second nail body (2) and regulating block (3).

2. A hollow screw according to claim 1, characterised in that the outer walls of the first shank (1) and the second shank (2) are provided with a thread.

3. The hollow screw according to claim 2, characterized in that the second shank (2) is provided with a driver groove (11) on the side opposite to the first shank (1).

4. The hollow screw according to claim 1, wherein the adjusting mechanism comprises a first bevel gear (7) sleeved and fixed on the outer wall of the threaded cylinder (5), a sleeve (13) penetrates through the adjusting block (3), a rotating rod (12) is rotatably connected in the sleeve (13), a second bevel gear (8) meshed with the first bevel gear (7) is fixedly connected to the rotating rod (12), and a twisting block (14) is fixedly connected to the other end of the rotating rod (12).

5. The hollow screw according to claim 1, characterized in that the limiting mechanism comprises a hollow rod (9) fixed on the second screw body (2), a sliding rod (10) is fixedly connected to the inner wall of the adjusting block (3), and the sliding rod (10) penetrates through the hollow rod (9) and is connected with the inner wall thereof in a sliding manner.

6. The hollow screw according to claim 1, characterized in that a sealing gasket is arranged between the second shank (2) and the inner wall of the adjusting block (3).