Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and instrumentation for patello-femoral joint replacement

A technology of hip joints and joints, applied in the field of novel orthopedic joint replacement implants, can solve the problem that there is no disclosed device or method for assisting the surgeon in accurately implanting the device, no disclosed device and method, and inability to understand the geometry of the knee joint matching issues

Inactive Publication Date: 2010-12-08
巴奥米特西班牙整形公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Devices and methods for instructing or guiding surgeons in bone preparation for improved device implantation are not disclosed
The claims in U.S. Patent No. 5,609,644 propose a patellofemoral joint, however, describe only the knee cap replacement component in detail and do not disclose an apparatus or method to assist the surgeon in accurately implanting the device
The system disclosed by Stein does not maintain the anatomical contour of the femur and requires several additional steps in the procedure, thus complicating and tending to complicate the procedure
Unlike the present invention, Stein's method is additionally traumatic due to greater bone loss through Stein's machining of the femoral groove, and at the same time does not conform to standard overall knee geometry, so the implant will Inability to make simple fixes when necessary

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
  • Method and instrumentation for patello-femoral joint replacement
  • Method and instrumentation for patello-femoral joint replacement
  • Method and instrumentation for patello-femoral joint replacement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The present invention provides a system including a patellofemoral joint replacement device, a series of instruments, and a method for implanting the patellofemoral joint replacement device using the instrument.

[0025] The patellofemoral joint replacement device roughly includes two connecting parts, a femoral implant, and Figure 2A -The kneecap implant represented by 12 in B, where the femoral implant is Figure 1A -C is represented by the symbol 10.

[0026] From Figure 1A It is clearly seen in C that the femoral implant 10 is designed to replace the anterior surface of the distal part of the patient's femur. The femoral implant 10 includes an anatomically shaped upper surface 14 with a generally concave joint groove 16 oriented centrally and longitudinally.

[0027] From Figure 1A It clearly shows that the underside 18 of the femoral implant 10 includes at least one but preferably a plurality of recesses 20, at least one intramedullary rod 22, and an undercut edge 24 arra...

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

A patello-femoral joint prosthesis (10) is provided which allows smooth tracking of the articulating surfaces through a full range of joint motion. A novel configuration of a femoral implant component (12) that facilitates superior adhesion to bone is also provided. Also provided is a patello-femoral joint replacement system, which permits precise, reproducible bone preparation techniques that uniquely permit later revision and full knee joint replacement procedures with minimal complications. Also provided are a drill guide (90) and a cutting guide (44), each being configured to provide three point stabilization during operation.

Description

technical field [0001] The present invention relates generally to novel orthopedic joint replacement implants and methods, and in particular to improved methods for performing patellofemoral joint replacements through simpler, less invasive surgical procedures using instrumented, reproducible incisions methods and systems. Background technique [0002] Patellofemoral replacement is a well known orthopedic surgery. Various conventional joint replacement devices have been used since the seventies, however, unlike artificial joints commonly used in total knee replacement surgery, conventional patellofemoral replacement devices have not gained widespread acceptance in the orthopedic field . This may be due to somewhat mixed clinical results, which have been demonstrated for conventional patellofemoral arthroplasties in the relevant medical literature. This conventional prosthesis typically includes a femoral component, which is a large, bulky device that is contoured to fit w...

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 Patents(China)
IPC IPC(8): A61F2/38A61B17/15A61B17/17A61B17/56A61B17/58A61B17/16A61B19/00A61F2/00A61F2/30A61F2/46
CPCA61F2002/30891A61F2002/30004A61B17/1764A61B2019/461A61F2002/30841A61F2/3859A61F2002/30807A61F2/3877A61F2002/30327A61F2002/30878A61F2/30767A61F2250/0014A61F2250/0039A61B17/155A61B17/1659A61B17/1675A61F2002/4631A61F2002/30822A61F2/30771A61B2090/061
Inventor W·F·阿本德沙因
Owner 巴奥米特西班牙整形公司