Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Elastic interlocking intramedullary nail

An intramedullary nail and elastic technology, which is applied in the field of elastic interlocking intramedullary nails of clinical orthopaedic internal fixation devices, can solve the problems of fracture, delayed union, non-union, etc., and achieves accelerated fracture healing, avoids stress shielding, and prevents bone fractures. The effect of loose formation

Inactive Publication Date: 2006-12-13
王秋霞
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the stress shielding of the intramedullary nail, there will still be problems such as fracture nonunion, delayed union, or fracture after removal of internal fixation.

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
  • Elastic interlocking intramedullary nail
  • Elastic interlocking intramedullary nail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] Introduce embodiments of the present invention below in conjunction with accompanying drawing:

[0011] The elastic interlocking intramedullary nail includes an intramedullary nail and a screw, and the intramedullary nail is composed of a cap screw (1), a nail body (3) and an elastic device (2) (4). Cap screw (1) is threadedly connected with nail body (3). The far and near ends of the nail body (3) are provided with interlocking screw holes, and the axial diameter of the interlocking screw holes at the proximal end of the nail body (3) is slightly larger than the transverse diameter. The inner diameter of the lower edge surface of the elastic device near the cylinder wall is greater than the inner diameter of the lower edge surface far from the cylinder wall, forming a step, the elastic device is located on the step, its upper edge surface is located below the interlocking screw, and the lower edge of the proximal interlocking screw hole is higher than the cylinder Wal...

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 the spring intramedullary nail, comprising intramedullary nail and screw. The intramedullary nail is composed by nail, spring device and cap screw. The cap screw is connected with screw, the axial diameter of screw is more than the transverse diameter of screw, the screw can axially move, in the nail there is steps, the spring device is on the steps, and the spring device is stiff spring or macromolecule elastic capsule. The intramedullary nail has the advantages of improving the acting force of knitting and paresis, accelerating assimilation, enhancing sclerotic strength, and avoiding osteoporosis.

Description

Technical field [0001] The invention relates to an elastic interlocking intramedullary nail, which is a clinical orthopedic internal fixation device, which is suitable for treating bone fractures. Background technique [0002] In the orthopedic treatment of diaphysis fractures, intramedullary nails are usually inserted into the medullary cavity of the diaphysis to connect and fix the fracture ends. With the improvement of fracture internal fixation technology, interlocking intramedullary nails appeared, which effectively controlled the bending, twisting, shearing, and rotating stress of the fracture end, and greatly reduced the rate of fracture nonunion and infection rate. However, due to the stress shielding of the intramedullary nail, there will still be problems such as fracture nonunion, delayed union, or fracture after removal of internal fixation. Contents of the invention [0003] The purpose of the present invention is to solve various difficulties in the existing...

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): A61B17/72
Inventor 王秋霞宋文超裴国献李鉴轶王培
Owner 王秋霞
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com