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Spinal Adjustable Depth Limiter

A technology of driving device and spine, applied in the field of medical devices, can solve the problems of easy forward slippage and displacement, damage to the spinal cord, and difficulty in grasping the force, so as to reduce the learning curve and operation difficulty, prevent forward slippage and displacement, Implant placement for perfect results

Active Publication Date: 2017-04-26
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the strength is not easy to master, it is easy to drive the implant too deep and damage the spinal cord backwards, resulting in disastrous consequences
If the force is not enough during the knocking process, the implant position is not good, and it is easy to slip forward and shift
It is not easy to master the strength during the hitting process, and the learning curve is long

Method used

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  • Spinal Adjustable Depth Limiter

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, the spine adjustable depth-limiting driver disclosed in the present invention includes an adjustment rod 2, a baffle plate 6, and a driver body 1. The driver body 1 is hollow, and the lower part of the driver body 1 is provided with a threaded rod 10. , the threaded rod 10 is adapted to the inner wall of the lower part of the driver body 1, the top of the threaded rod 10 is provided with a groove 3, the adjustment rod 2 is inserted into the groove 3 from the top of the driver body 1, the lower part 4 of the adjustment rod is a non-rotating body, and the adjustment The groove 3 at the lower part of the rod 2 fits, the lateral dimension of the lower part 4 of the adjusting rod is larger than the opening size of the groove 3, there i...

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PUM

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Abstract

The invention discloses an adjustable depth-limiting striking instrument for the spine. The adjustable depth-limiting striking instrument for the spine comprises an adjusting rod, a baffle and a striking instrument body; the striking instrument body is hollow, the lower portion of the striking instrument body is provided with a threaded rod which is matched with the inner wall of the lower portion of the striking instrument body, the top of the thread rod is provided with a groove, and the adjusting rod is inserted into the groove from the top of the striking instrument body; the lower portion of the adjusting rod is provided with a non-rotary body and matched with the groove, a gap is formed between the bottom face of the adjusting rod and the bottom of the groove, the top of the adjusting rod is connected with a pushing handle, and the transverse size of the pushing handle is larger than the inner diameter of the striking instrument body; the side wall of the striking instrument body is provided with an axial groove, the baffle penetrates through the axial groove, one end of the baffle is provided with teeth which are matched with a thread of the threaded rod, and the other end of the baffle is located outside the striking instrument body. According to the adjustable depth-limiting striking instrument for the spine, the positions of implantation materials such as a titanium mesh are more perfect, forward spondylisthesis and displacement are prevented, and the titanium mesh can be prevented from downwards injuring the spinal cord in the striking process.

Description

technical field [0001] The invention relates to a medical device, in particular to a spinal adjustable depth-limiting driver. Background technique [0002] In traditional spinal surgery, it is often necessary to implant titanium mesh, intervertebral fusion device and other implants. During the process of implanting titanium mesh and other implants, there are no corresponding instruments. During the operation, "screwdriver" and "bone knife" are often used. "And other substitutions are highly arbitrary and dangerous. Because the strength is not easy to master, it is easy to drive the implant too deep and damage the spinal cord backwards, resulting in disastrous consequences. If the force is not enough during the knocking process, the implant position is not good, and it is easy to slip forward and shift. It is not easy to master the strength during the hitting process, and the learning curve is long. Contents of the invention [0003] The present invention aims to provide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/92A61B17/70A61F2/46
CPCA61B17/7067A61B17/7074A61B17/92A61F2/4601A61F2/4611
Inventor 刘浩杨毅王贝宇丁琛
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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