Loosening-preventing vertebral pedicle screw-rod system

A pedicle screw and anti-loosening technology, which is applied in the field of implants in the human body of medical devices, can solve the problems of inconvenient assembly of the locking head and easy loosening of the locking head

Pending Publication Date: 2018-02-16
李照文
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an anti-loosening device with simple structure and reasonable design to solve the problems of easy loosening of locking

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
  • Loosening-preventing vertebral pedicle screw-rod system
  • Loosening-preventing vertebral pedicle screw-rod system
  • Loosening-preventing vertebral pedicle screw-rod system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071] The anti-loosening pedicle screw rod system is composed of two fixing rods 1, bone penetration screws, locking heads, connecting plates 24 and locking screw plugs 3; each fixing rod 1 is respectively equipped with one or more lock head.

[0072] The locking head is composed of a locking seat 23 and a locking stud 25; the inner thread of the locking seat 23 is equipped with a locking stud 25; the cross section of the locking stud 25 is approximately "convex" (see the attached manual). image 3 ). The purpose of setting the locking stud 25 in this way is to restrict it in the locking seat 23 by the thick end portion of the locking stud 25, thereby avoiding the accident that the locking stud 25 falls off from the locking seat 23 .

[0073] The locking seat 23 below the locking stud 25 is provided with a fixed rod through hole 26; between the fixed rod through hole 26 and the locking stud 25, a connecting plate through hole 27 is arranged in a "ten" cross shape; The head...

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

The invention relates to an anti-loosening pedicle screw-rod system, which belongs to the technical field of implants in the human body of medical instruments. The anti-loosening pedicle screw rod system is composed of two fixing rods, bone screws, locking heads, connecting plates and locking screw plugs; each fixing rod is equipped with one or more locking heads corresponding to each other. ; The corresponding locking heads are connected to each other through the connecting plate; the fixing rods on both sides of the locking head are equipped with a plurality of bone-piercing screws through locking screw plugs: the locking head is composed of a locking seat and a locking stud; A locking stud is installed on the inner thread of the tight seat; a fixed rod through hole is arranged in the locking seat below the locking stud. The anti-loosening pedicle screw-rod system has a reasonable structure and ingenious design; it solves the problems of certain loosening risk and inconvenient assembly of the locking head in the existing pedicle screw-rod system. It meets the needs of patients for long-term safe use.

Description

technical field [0001] The invention relates to an anti-loosening pedicle screw-rod system, which belongs to the technical field of implants in the human body of medical instruments. Background technique [0002] The spine is the main load-bearing structure of the human body. It has a complex structure and has the functions of bearing weight, maintaining body balance, exercising, and protecting the spinal cord and internal organs. It plays an extremely important role in normal physiological activities of the human body. Severe fractures of the spine or lesions such as spinal tumors often require spinal reconstruction surgery to stabilize the spine and maintain daily physiological activities or weight bearing. At present, there are many surgical methods used in spinal reconstruction, but the strongest internal fixation method is generally pedicle screw-rod system internal fixation. The existing pedicle screw rod system consists of a fixation rod, a bone screw, a locking head...

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): A61B17/70A61B17/86
CPCA61B17/7002A61B17/7064A61B17/7074A61B17/861A61B2017/564
Inventor 李照文
Owner 李照文
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