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

Resurfacing cup for acetabulum hemiarthroplasty of hip joint

A technology for hip replacement and surface reconstruction, applied in the field of acetabular cups

Pending Publication Date: 2021-10-29
SCYON ORTHOPAEDICS
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The present invention solves the main problem of bone-sparing hip resurfacing surgery by using only the acetabular component, in which the natural femoral head articulates, only shaved into a spherical shape and cleared of the possibility of impingement on the acetabulum thereby restricting movement range of osteophytes

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
  • Resurfacing cup for acetabulum hemiarthroplasty of hip joint
  • Resurfacing cup for acetabulum hemiarthroplasty of hip joint
  • Resurfacing cup for acetabulum hemiarthroplasty of hip joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] Total hip replacement prosthesis under the state of the art ( figure 1) comprises an acetabular cup 1 fixed to the pelvis 100 , a femoral stem 2 fixed to the femur 200 with the femoral head 3 attached to the stem 2 . Typical constructions today have a polymer cup insert, most commonly made of cross-linked UHMWPE, backed by a metal shell with a porous coating facing the bone. Stems for cementless fixation may also be coated with a porous layer, or alternatively rough sprayed with a thin coating such as hydroxylimestone. The head can be metallic or ceramic. In an alternative to cementless fixation, so-called bone cement, a two-component polymethylmethacrylate, can be used to fix both the cup and the stem into the respective bone.

[0036] The hemihip replacement prosthesis under the state of the art ( figure 2 ) includes femoral components only. The femoral stem 4 is fixed to the femur 200 . A large diameter femoral head 5 fits directly onto the stem 4 or via a smal...

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 present invention disclosed resolves the main problems of bone-sparing hip resurfacing surgery by using only an acetabular component in which the femoral head articulates, being only shaved to a spherical shape and cleared of osteophytes that could impinge on the acetabulum and so restrict the range of motion. The inner surface of the resurfacing cup is aspherical in shape creating an annular contact with the femoral head. The inner, articulating surface of the cup (10) is ADLC or pyrolytic carbon coated to reduce friction and wear of the femoral head. The surgical approach is well developed with surgery time significantly reduced by avoiding the use of the femoral resurfacing component. The cup is preferably of the double¬ shell type for cementless fixation, but it can also be made as a single shell for cementless or cemented fixation. Should a revision surgery due to wear of the femoral head become necessary, the cup can be retained and combined with a dual mobility femoral component.

Description

technical field [0001] The invention relates to an acetabular cup used in human medicine and veterinary medicine for hemiarthroplasty of the hip joint. Further, the present invention relates to a dual action revision total hip replacement with an acetabular resurfacing cup and a femoral head sharpener for preparing a femoral head for articulation within said acetabular resurfacing cup. Background technique [0002] Hip replacement surgery is considered one of the most successful quality-of-life-enhancing surgeries of the last century. The history of wider use in hip surgery begins in the late 40's with the Austin-Moore - a hemi-prosthesis for the femoral head and neck. The femoral stem is cementless with a fenestration for bone ingrowth. [0003] The first total hip prostheses were metal-on-metal types introduced in the 1950s, such as the Thompson hemi-prosthesis by McKee. Clinical results have been mixed and acceptance has been limited. [0004] The revolution in clinic...

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
Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/34A61F2/32
CPCA61F2/34A61F2/32A61F2/36A61F2002/30935A61F2002/3225A61F2002/30657A61F2002/30655
Inventor 斯洛博丹·泰皮奇
Owner SCYON ORTHOPAEDICS
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