Two-way pre-stress clamping device used for spine implant and installing method thereof

A clamping device, lateral prestressing technology, applied in spinal implants, joint implants, joint implants, etc., can solve the problems of vertebral tension, compression force, shear force and torque that cannot be effectively transmitted , to reduce the risk of slippage and improve the effect of effective transmission

Active Publication Date: 2016-04-06
徐州徐工精密工业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this dynamic clamping device is in use, when the fulcrum is destroyed, the filler rotates around the fulcrum, and the filler still has the risk of relative sliding when pressing against the elastic connection element, causing tension between adjacent vertebrae, Compression, shear and torque are not transmitted efficiently

Method used

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  • Two-way pre-stress clamping device used for spine implant and installing method thereof
  • Two-way pre-stress clamping device used for spine implant and installing method thereof
  • Two-way pre-stress clamping device used for spine implant and installing method thereof

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with drawings and embodiments.

[0058] Such as Figure 1-3 As shown, a bidirectional prestressed clamping device for spinal implants includes a screw 1 , a U-shaped piece 2 , a support 3 , a cover plate 5 , a prestressed piece and a clamping piece 9 .

[0059] The prestressing elements include one vertical prestressing element 7 and two transverse prestressing elements 4 .

[0060] The U-shaped piece 2 includes a U-shaped piece bottom plate 21 and two U-shaped piece side walls 22 extending upward from the U-shaped piece bottom plate 21 . The bottoms of the two U-shaped side walls 22 are respectively connected to the corresponding ends of the U-shaped bottom plate 21; The inner surfaces of the side walls 22 of the U-shaped member are respectively provided with transverse prestressing members 4 protruding inward.

[0061]The bottom surface of the U-shaped piece bottom plate 21 is fixed with the conne...

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Abstract

A two-way pre-stress clamping device used for a spine implant comprises a screw (1), a U-shaped piece (2), a support (3), a cover plate (5), a pre-stress piece and a clamping connection piece (9). The U-shaped piece (2) comprises a U-shaped piece bottom plate and two U-shaped piece side walls with inwards-protruding transverse pre-stress pieces (4) arranged on the inner surface. The bottom face of the U-shaped piece bottom plate is fixedly connected with the screw (1), and the top face of the U-shaped piece bottom plate is provided with the support (3). The support (3) comprises a two support upper limbs forming a containing groove. The cover plate (5) comprises a cover plate top plate and two cover plate lower limbs. The clamping connection piece (9) comprises a clamping connection piece base and two clamping connection piece lower limbs. A pressing piece (6) is arranged on the lower surface of the cover plate top plate. A gasket (8) is arranged on the upper surface of the clamping connection piece base. The cover plate (5) and the clamping connection piece (9) are connected into a whole through a vertical pre-stress piece (7). The device is easy and convenient to install, multiple clamping guarantees are adopted, the slippage risk of an elastic connection element is reduced, and effective transmission of force between adjacent vertebrae is improved.

Description

technical field [0001] The invention relates to an instrument for medical surgery, in particular to a bidirectional prestressed clamping device for spinal implants and an installation method thereof. Background technique [0002] In the prior art, it is widely used in spinal fusion. During the operation, bone grafting is performed from the upper normal spine in the lesion area to the lower normal spine, so that bone fusion occurs in multiple normal spine stages to form a mechanical whole. So as to achieve the purpose of treating spinal diseases, eliminating pain, controlling the development of deformities, rebuilding the stability of the spine and protecting the spinal nerves. However, after spinal fusion, the load pressure on the adjacent nodes is increased, which may accelerate its degeneration or cause secondary instability. Therefore, a class of elastic systems that only supports and stabilizes but does not integrate emerges at the historic moment. This type of elastic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/46
CPCA61F2/4601A61F2/4611A61F2002/4622A61F2/48
Inventor 吴同申孟茜张晓荣王晓云陈国武袁硕
Owner 徐州徐工精密工业科技有限公司
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