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Miniature vertebral body opening device and its transferring device

A technology of a conveying device and a spreader, which is applied in the field of medical devices and can solve problems such as complex structures

Inactive Publication Date: 2003-12-10
茆树良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of this type of device is relatively complicated. It is necessary to drill holes in the vertebra adjacent to the diseased vertebra and insert screws. After the diseased vertebra heals, a second operation is required to remove the fixed device.

Method used

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  • Miniature vertebral body opening device and its transferring device
  • Miniature vertebral body opening device and its transferring device
  • Miniature vertebral body opening device and its transferring device

Examples

Experimental program
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Embodiment Construction

[0017] Such as figure 1 As shown, this miniature vertebral body spreader is a nickel-titanium memory alloy product, which includes a handle 1 and two claws 2, the rear ends of the two claws are fixed with the front ends of the handle, and the front ends of the claws are separated into V-shaped, the center of the handle has an axially through hole 3.

[0018] and figure 1 The delivery device used with the miniature vertebral body spreader shown is as follows: Figure 4 As shown, it includes a delivery rod 7, the rear portion of the delivery rod has a handle 8, and the front end of the delivery rod has a protrusion 9 that can be inserted into the hole 3 of the handle 1 center of the miniature vertebral body spreader.

[0019] Such as Figure 10 As shown, when this miniature vertebral body spreader is used, a hole 12 is made on the diseased vertebra through the pedicle to reach the fracture or collapsed site, and the miniature vertebral body spreader is cooled to close to zero...

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Abstract

The nickel-titanium memory alloy product miniature vertebral body opening device includes a handle and two claws, the rear ends of two claws and front end of the handle are fixed together, and the front end of two claws is separated into V-shaped form, the centre of the handle is equipped with an axial through hole. It has its matched conveying device including conveying bar and handle, and the front end of the conveying bar is equipped with a projection which can be inserted into the above-mentioned central hole of the handle of the miniature vertebral body opening device.

Description

technical field [0001] The invention relates to a medical device for treating traumatic vertebral fractures and senile vertebral body collapse, in particular to a device for treating compression fractures, a miniature vertebral body spreader and a delivery device thereof. Background technique [0002] Vertebral compression fracture is one of the common diseases in orthopedic surgery. The treatment usually involves placing a fixation device in the pedicle of the vertebra adjacent to the diseased vertebra, and then reducing and fixing the vertebral body. For example, Chinese patent 98241135.9 introduces a vertebral body distraction fixation device, which consists of two pedicle fixation screws, a pressurizing rod, a distracting rod and a fastening nut. The structure of this type of device is relatively complicated, and it is necessary to drill a hole in the vertebra adjacent to the diseased vertebra and insert a screw. After the diseased vertebra heals, a second operation is r...

Claims

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Application Information

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IPC IPC(8): A61B17/56
Inventor 茆树良周静胡永成吴淳王爱勤杨玉民
Owner 茆树良
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