CN214632298U

CN214632298U - A new type of spinal arch root screw

Info

Publication number: CN214632298U
Application number: CN202022768317.3U
Authority: CN
Inventors: 徐灿华
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-11-09
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to the field of medical instruments, in particular to a novel spinal arch root screw, which comprises a threaded rod and a nail seat fixed with the upper end face of the threaded rod. A support hole penetrating the threaded rod is provided, and the support hole is arranged obliquely. After the pedicle screw and the bones of the spine are fixed to each other, the fixing screw is passed through the support hole on the threaded rod and then fixed to the bone, which can effectively avoid the phenomenon of the pedicle screw loosening and retreating during the correction and reduction of the spine.

Description

Novel spinal pedicle screw

[ technical field ] A method for producing a semiconductor device

The utility model relates to the field of medical equipment, especially, relate to a novel backbone pedicle screw.

[ background of the invention ]

With the development of spinal biomechanical research and material science, the spinal internal fixation technology makes great progress, and the spinal fixation device is widely applied to surgical treatment of spinal degenerative diseases, spinal tumors, wounds, spinal infection and the like.

Spinal fixation devices typically include a connecting rod, a lock nut, and a plurality of pedicle screws. When fixed backbone, earlier with the connective bar in advance curved shape on the coronal plane, then implant human backbone with the pedicle screw, reuse the connective bar and connect a plurality of pedicle screws, restore to the throne through frog and reset technique such as excellent instrument implementation pressure stick to human backbone commonly used afterwards such as pincers, thereby rectify the reduction to human backbone, restore to the throne the back through lock nut and pedicle screw cooperation with the connective bar complete fixation. However, when the spine is reduced in a corrective manner, the pedicle screw is frequently operated, and the pedicle screw is easily loosened and pushed back.

The utility model discloses it is not enough to solve prior art and research and propose.

[ Utility model ] content

The utility model aims at overcoming the shortcomings of the prior art and providing a novel spinal pedicle screw which can be effectively used.

The utility model discloses can realize through following technical scheme:

the utility model discloses a novel backbone pedicle screw, reach the nail seat of fixing mutually with threaded rod up end including the threaded rod, the nail seat has U type groove, still be provided with the supported hole that runs through the threaded rod on the first one of threaded rod, the supported hole slope sets up. After the pedicle screw and the bone of the spine are mutually fixed, the pedicle screw is fixedly fixed with the bone after penetrating through the supporting hole on the threaded rod through the fixing screw, and the phenomenon that the pedicle screw is loosened to return back when the spine is corrected and reset can be effectively avoided.

Preferably, the nail seat comprises a groove bottom and groove side portions fixed on two sides of the upper end face of the groove bottom, a cylindrical fixing groove is formed between the two groove side portions, an internal thread matched with a lock nut is arranged on the fixing groove, and a plurality of grooves matched with the jaws of the reset pliers for use are formed in two sides of the groove side portions. Through setting up and pincers complex recess that keep silent that resets, when fixing the back to the backbone, through the protruding and recess cooperation use on keeping silent of the pincers that reset, reset pincers from the left and right sides tight pedicle screw that presss from both sides, can not interfere the connective bar that the fore-and-aft direction passed, great use that has made things convenient for pincers that reset.

Preferably, a plurality of round holes are further arranged on the side part of the groove.

Preferably, the support hole is provided with a fixing thread. Through the equipment of mutually supporting of fixed thread and set screw, the equipment intensity between further assurance set screw and the pedicle screw, pedicle screw is lax when further avoiding the backbone to correct the reduction.

Preferably, the bottom of the threaded rod is also provided with a notch. Through setting up the breach, when the pedicle screw was fixed, the threaded rod entered into inside the bone more easily.

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

after the pedicle screw and the bone of the spine are mutually fixed, the pedicle screw is fixedly fixed with the bone after penetrating through the supporting hole on the threaded rod through the fixing screw, and the phenomenon that the pedicle screw is loosened to return back when the spine is corrected and reset can be effectively avoided.

[ description of the drawings ]

The following detailed description of embodiments of the present invention is provided with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is another angle structure diagram of the present invention;

FIG. 3 is a front view of the present invention;

FIG. 4 is a schematic structural view of the present invention assembled with a fixing screw;

in the figure: 1. a threaded rod; 2. a nail seat; 201. the bottom of the tank; 202. a slot side; 203. fixing grooves; 204. an internal thread; 205. a groove; 206. a circular hole; 3. a support hole; 4. fixing threads; 5. a notch; 6. a set screw;

[ detailed description ] embodiments

The following detailed description of embodiments of the present invention is made with reference to the accompanying drawings:

as shown in fig. 1 and 4, the utility model discloses a novel backbone pedicle screw, including threaded rod 1 and with 1 up end of threaded rod fixed nail seat 2 mutually, nail seat 2 has U type groove, still is provided with the supported hole 3 that runs through threaded rod 1 on 1 first of threaded rod, and supported hole 3 slopes to set up. After the pedicle screw and the bone of the spine are mutually fixed, the pedicle screw is fixedly fixed with the bone after passing through the supporting hole 3 on the threaded rod 1 through the fixing screw 6, and the phenomenon that the pedicle screw is loosened to return when the spine is corrected and reset can be effectively avoided.

Wherein, nail seat 2 contains tank bottom 201 and the symmetry and fixes the groove lateral 202 in tank bottom 201 up end both sides, has formed cylindrical fixed slot 203 between two groove lateral 202, is provided with on the fixed slot 203 with lock nut complex internal thread 204, and groove lateral 202 both sides all are provided with a plurality ofly and restore to the throne pincers keep silent the recess 205 that the cooperation was used. Through setting up and pincers that reset and keeping silent complex recess 205, when the backbone is corrected after the pedicle screw is fixed, through the protruding and recess 205 cooperation use on keeping silent of the pincers that reset, reset pincers from controlling both sides and pressing from both sides tight pedicle screw, reset pincers and pedicle screw can not take place the displacement to can not interfere the connective bar that the fore-and-aft direction passed, great make things convenient for the use of pincers that reset.

Wherein, a plurality of round holes 206 are also provided on the groove side 202.

Wherein, the supporting hole 3 is provided with a fixed thread 4. Through the equipment of mutually supporting of fixed thread 4 and set screw 6, further assurance set screw 6 and the equipment intensity between the pedicle screw, pedicle screw takes place to relax with the bone when further avoiding the backbone to correct the reduction.

Wherein, the bottom of the threaded rod 1 is also provided with a gap 5. Through setting up breach 5, when the pedicle screw is fixed, inside the bone was entered into more easily to threaded rod 1.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many changes, modifications, substitutions and variations can be made to the embodiments without departing from the technical principles of the present invention, and these changes, modifications, substitutions and variations should also be considered as the protection scope of the present invention.

Claims

1. a novel spinal arch root screw, comprising a threaded rod and a nail seat fixed with the upper end face of the threaded rod, it is characterized in that: the nail seat has a U-shaped groove, and the upper half of the threaded rod is also provided with a through thread. The support hole of the rod, the support hole is arranged obliquely, and the support hole is provided with a fixed thread.

2 . The novel spinal arch screw according to claim 1 , wherein the screw seat comprises a groove bottom and groove sides fixed on both sides of the upper end surface of the groove bottom, and a cylinder is formed between the two groove sides. 3 . The fixed groove is provided with an internal thread, and both sides of the side of the groove are provided with a plurality of grooves for cooperating with the jaws of the reset jaws.

3 . The novel spinal arch root screw according to claim 2 , wherein a plurality of circular holes are further provided on the side portion of the groove. 4 .

4 . The novel spinal arch screw according to claim 1 , wherein the bottom of the threaded rod is further provided with a notch. 5 .