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Trans-vertebral arch pedicle type hollow vertebra centrum bone-grafting apparatus

A bone implant and pedicle technology, applied in spinal implants, medical science, surgery, etc., can solve the problems of easy displacement, easy piercing of the bone cortex, damage to the front large blood vessels, etc., to achieve easy operation and reduce surgery. effect of risk

Inactive Publication Date: 2007-07-25
贺新宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the operation is to use a transpedicular awl to drill a hole, and then insert a special funnel for bone grafting. During the operation, it is easy to change position and easily penetrate the cortical bone. In addition, there is a gap after the vertebral fracture is reset, which is very easy to be damaged by the instrument. If the insertion is too deep, the large blood vessels in front will be damaged, which is life-threatening. The technical requirements for the operation are very high. Because there is no corresponding special equipment for accurate operation, doctors mainly rely on doctors to operate by experience, but because the risk is too high, many patients and doctors have to give up. , the app has not yet been promoted

Method used

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  • Trans-vertebral arch pedicle type hollow vertebra centrum bone-grafting apparatus
  • Trans-vertebral arch pedicle type hollow vertebra centrum bone-grafting apparatus

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Use the present invention to assist doctors to carry out bone graft surgery in the vertebral body through the posterior pedicle for patients with lumbar vertebral body fractures as shown in Figure 8, vertebral body collapse, kyphosis deformity, and height loss. After fracture reduction, postural reduction and / or spinal internal fixation to correct the posterior concave deformity, the height has been restored, but the bone defect is shown in Figure 9. Insert the guide wire into the vertebral body of the pedicle to a depth of 3 cm. During the operation, fluoroscopy or radiographs will prove that the position is correct, as shown in Figure 10. Use guide cones of different sizes to expand the pedicle channel along the guide needle, and the guide cones will enter the depth. Reach the anterior column of the vertebral body, and fix the entry depth with the limited card, as shown in Figure 11; fit the bone graft sleeve with the limited card and the small guide cone, insert the p...

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Abstract

A conic hollow bone transplanter for the pedicle of vertebral arch is composed of guiding needle, the big and small guiding conic sleeve tubes with tail handle and front spiral thread for playing the drill role, bone transplanting sleeve tube with internal cavity matched with small guiding conic sleeve tube, horn tail and external handle, bone transplanting rod, and big and small limiting fasteners.

Description

technical field [0001] The invention relates to an orthopedic medical instrument, in particular to an instrument for bone grafting in a hollow vertebral body through the pedicle. Background technique [0002] In spinal surgery, when a patient suffers from vertebral body compression, burst fracture, vertebral body collapse, kyphosis, height loss, etc., doctors usually perform vertebral body reduction and internal fixation on patients with moderate and severe fractures. After the vertebral body was reset and fixed by the pedicle device through the posterior approach, although the height of the vertebral body was restored, the trabecular bone support structure in the vertebral body was not restored at the same time, forming a gap in the vertebral body, and the hematoma in the gap was very large. Ossification is difficult to achieve, and the gap makes the upper and lower pedicle screws subject to strong cantilever force. If effective bone graft reconstruction is not performed, f...

Claims

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Application Information

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IPC IPC(8): A61B17/56A61F2/44
Inventor 贺新宁
Owner 贺新宁
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