Orthopedic vertebral body repositioning device

A reset device and vertebral body technology, applied in fractures, medical science, surgery, etc., can solve problems such as operation failure, pedicle screw path damage, and failure to reach

Inactive Publication Date: 2008-01-16
朱大成
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the advancement of new internal fixation devices and technologies, great progress has been made in the treatment of spondylolisthesis, and surgical treatment has the best effect. The surgical treatment process is divided into three steps: reduction, fixation, and bone graft fusion. It is also the key to surgical treatment. At present, the usual reduction method is to lift the pedicle screw. However, if the pedicle screw channel is damaged during the operation, or the patient suffers from osteoporosis and severe spondylolisthesis, Often, the pedicle screw protrudes from the screw channel during reduction and pulling, and the purpose of reduction cannot be achieved, resulting in the failure of the operation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Orthopedic vertebral body repositioning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] As shown in the accompanying drawings, a reset nut 1, a reset rod 2, and a fixed rod 3 form an orthopedic vertebral body reset device. The rear end of the fixed rod 3 is threaded to cooperate with the reset nut 1, and the front side of the fixed rod 3 is provided with several ratchets; when resetting, the reset rod 2 is set on the fixed rod 3, and the reset nut 1 is rotated to push the reset rod 2 Move on the fixed rod 3, the reset nut 1 is provided with a correction hole, which can be inserted into the threaded end of the fixed rod 3, and the angle of the fixed rod 3 can be adjusted by rotating the reset nut 1.

[0009] During surgical reduction, the complete set of vertebral body reduction instruments is autoclaved for backup. In the reduction operation for lumbar spondylolisthesis, when the vertebral body reduction is performed, the nucleus pulposus is completely removed to the vertebral body cartilage, and the front non-slip ratchet with appropriate width is selected...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

Disclosed is an orthopedic vertebra reduction device which consists of a reduction nut (1), a reduction rod (2) and a fixed rod (3). The back end of the fixed rod (3) is provided with screw thread which is matched with the reduction nut (1) and the side surface of the front end of the fixed rod (3) is provided with a plurality of ratchets. The reduction rod (2) is sleeved on the fixed rod (3); the front end of the reduction rod (2) is provided with gears. The invention is used to restore the isthmic spondylolisthesis, the invention can be used singly or used in cooperation with a pedicle of vertebral arc nail pulling method, and the operation can achieve better effect especially when the pedicle of vertebral arc nail path is damaged or when a patient suffers from osteoporosis. The invention which is simple in operation and powerful in reduction can complement the defect of the reduction method of the traditional orthopedic vertebra reduction device.

Description

technical field [0001] The invention relates to a special instrument for lumbar spondylolisthesis orthopedic surgery. Specifically, it is an orthopedic vertebral body dislocation reduction internal fixation auxiliary device. Background technique [0002] Lumbar spondylolisthesis is a common and frequently-occurring disease in the field of orthopedics. The main symptoms are low back pain, or radicular pain, numbness, and intermittent claudication in the lower limbs. The incidence rate in the population is about 5%, and a large number of patients need surgery. With the advancement of new internal fixation devices and technologies, great progress has been made in the treatment of spondylolisthesis, and surgical treatment has the best effect. The surgical treatment process is divided into three steps: reduction, fixation, and bone graft fusion. It is also the key to surgical treatment. At present, the usual reduction method is to lift the pedicle screw. However, if the pedicle ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B17/56A61B19/00A61F5/04
Inventor 朱大成田万成李洁
Owner 朱大成
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap