Semi-opened and semi-closed spine ilium bolt

A half-open and half-closed screw technology, applied in the direction of internal bone synthesis, internal fixator, fixer, etc., can solve the problems of difficult surgery, troublesome bending of connecting rods, and difficulty in inserting waist-shaped holes, so as to shorten the operation time, The effect of convenient operation and elimination of hidden dangers in surgery

Inactive Publication Date: 2015-12-09
KANGHUI MEDICAL INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is troublesome to bend the shaped connecting rod, and it is difficult to insert into the waist-shaped hole, which has certain difficulties and risks for doctors to operate

Method used

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  • Semi-opened and semi-closed spine ilium bolt
  • Semi-opened and semi-closed spine ilium bolt
  • Semi-opened and semi-closed spine ilium bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Refer to attached Figure 1~4 A semi-open and semi-closed spinal iliac screw includes a nail cap 1 , an intermediate body 2 , a collar 3 and a screw 4 .

[0025] The inside of the nail cap 1 is hollow, and the top of the nail cap 1 is provided with an internally threaded hole 1-1, and there are two waist-shaped holes in the circumference of the nail cap, one of which is closed, and the waist-shaped hole is closed for the nail cap. 1-3, the other waist-shaped hole is open, and the waist-shaped hole 1-2 is opened for the nail cap to facilitate the placement of the lateral connecting rod.

[0026] The intermediate body 2 is provided with a hemispherical inner cavity 2-2, and a through hole 2-1 is formed at the top of the intermediate body 2.

[0027] The head of the screw 4 is a spherical structure, and the top of the spherical structure has a screw ball head step 4-2, and the upper end of the head is provided with a screw inner hexagonal hole 4-1, and the screw 4 head is...

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Abstract

The invention discloses a semi-opened and semi-closed spine ilium bolt, and relates to one of internal fixation implants which are used in spine-pelvis stable reconstruction for treating spine malformations, lumbosacral portion traumas, inflammations and tumor diseases. The semi-opened and semi-closed spine ilium bolt is characterized in that the bolt comprises a bolt cap, an intermediate body, a retainer ring and a bolt body, the interior of the bolt cap is hollow, an internal threaded hole is formed in the upper portion of the interior of the bolt cap, two waist-shaped holes are formed in the circumferential direction of the bolt cap, one waist-shaped hole is closed and is the closed waist-shaped hole of the bolt cap, and the other waist-shaped hole is opened and is the opened waist-shaped hole of the bolt cap, so that placing of a lateral connection rod is convenient; the intermediate body is provided with a hemispherical inner cavity, and the top end of the intermediate body is provided with a through hole; the head of the bolt body is of a spherical structure, the top end of the spherical structure is provided with steps, the upper end of the head is provided with a bolt internal hexagon hole, and the head of the bolt body is clamped in the bolt cap by being screwed in the retainer ring; the head of the bolt body is clamped in the bolt cap through the retainer ring so that disengagement of the bolt body cannot be achieved.

Description

Technical field [0001] A semi-open semi-closed spine iliac screw involves one of the internal implants for the treatment of spine malformation, lumbosacral trauma, inflammation, and tumor disease. Background technique [0002] The spine fixed system is now mature.The development of fixed technology in the spine is mainly to meet the correction of spinal deformity. Since the first case of cervical spine fusion, the fixed development of the spine has never stopped. From the initial rigid fixation,The improvement and improvement of the fixed system in the spine.The power fixing system is soft and fixed or flexible. It is a spine exercise guarantee within the controllable range. It can restrict the abnormal exercise of the spine, but also change the load mode of the spine motion segment and relieve stress. This is currently widely used in the spine that is currently widely used.Fixed technology. [0003] For the current fixing system in the back of the chest and waist road, the nail ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/86A61B17/70
CPCA61B17/8615A61B17/7074A61B17/8625A61B17/8685
Inventor 陶凯唐子琳黄志清余强
Owner KANGHUI MEDICAL INNOVATION
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