Pedicle screw capable of achieving infusion and fixing system thereof

A pedicle screw and fixation system technology, applied in the field of medical devices, can solve problems such as hidden dangers, risks, and greater tolerance, and achieve the effects of cost saving, reliable and stable fixation

Pending Publication Date: 2017-05-17
BONE MEDICAL TECH OF SUZHOU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach requires surgery at the patient's vertebral level, placing multiple pedicle screws (eg figure 1 ) threaded distal thread into the vertebral body of the pedicle (eg figure 2 ), the connecting rod is fixed by the U-shaped proximal end of multiple pedicle screws, and the patient's vertebral segment is supported by the connecting rod. For some patients with osteoporosis, the bone tissue cannot bear this kind of fixation for a long time. If this kind of pedicle screw fixation is adopted way, will bring potential hidden dangers and risks

Method used

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  • Pedicle screw capable of achieving infusion and fixing system thereof
  • Pedicle screw capable of achieving infusion and fixing system thereof
  • Pedicle screw capable of achieving infusion and fixing system thereof

Examples

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0023] Such as image 3 and Figure 4 As shown, the perfusion pedicle screw fixation system of the present invention includes a pedicle screw 1 , a connector 3 , a syringe 2 and a mandrel 4 .

[0024] The pedicle screw 1 has a hollow screw tube 11 and a U-shaped proximal end 12. The inner wall of the U-shaped proximal end 12 of the pedicle screw is provided with an internal thread 121, which is threadedly connected with the external thread 31 on the outer wall of the connector 3 . The inner thread 32 on the inner wall of the connector 3 is threadedly connected with the outer thread 23 on the outer wall of the syringe 2, and the syringe 2 is fixed in the screw tube 11 of the hollow pedicle scr...

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PUM

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Abstract

The invention discloses a pedicle screw capable of achieving infusion. The pedicle screw is characterized by comprising a hollow screw tube and a U-type near end. The side wall of the far end of the screw tube is provided with asymmetric outlet holes, that is, the number of the outlet holes is not uniform or the diameters of the outlet holes are different, so that after the screw tube is inserted into an vertebral arch pedicle, the number or the diameter of the outlet holes in the side wall, facing an vertebral arch pedicle body, of the screw tube is larger than that of the outlet holes in the upper and lower sides, facing the height direction of the vertebral arch pedicle body, of the screw tube. The fixing mode is reliable and stable, and an existing pedicle screw supported and fixed through local stress of the vertebral arch pedicle is avoided. An existing syringe can be used in a fixing system so that the syringe can be detachably connected with the pedicle screw conveniently and quickly in a threaded mode through a connector, other auxiliary supporting and locating devices are not needed, the syringe and the connector can be repeatedly used, and the cost is reduced.

Description

technical field [0001] The invention relates to a perfusion pedicle screw and its fixation system, belonging to the technical field of medical instruments. Background technique [0002] Pedicle internal fixation using pedicle screw system is a minimally invasive surgical method for the treatment of common spinal diseases such as lumbar fractures, spinal stenosis, and spondylolisthesis. This approach requires surgery at the patient's vertebral level, placing multiple pedicle screws (eg figure 1 ) threaded distal thread into the vertebral body of the pedicle (eg figure 2 ), the connecting rod is fixed by the U-shaped proximal end of multiple pedicle screws, and the patient's vertebral segment is supported by the connecting rod. For some patients with osteoporosis, the bone tissue cannot bear this kind of fixation for a long time. If this kind of pedicle screw fixation is adopted way, will bring potential hidden dangers and risks. Contents of the invention [0003] The t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70A61B17/86A61B17/88
CPCA61B17/7064A61B17/7074A61B17/7094A61B17/861A61B17/864A61B17/8819A61B17/8825A61B17/8833A61B2017/564
Inventor 罗宗平杨惠林王志荣
Owner BONE MEDICAL TECH OF SUZHOU CO LTD
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