Title:
自動整合式膝人工装具
Document Type and Number:
Japanese Patent JP4820547
Kind Code:
B2
Abstract:
A prosthesis for repairing a knee is made with an insert sandwiched between a femoral component and a tibial tray. The parts are shaped so that both the femoral component and the tibial tray will slidingly interface with the insert during motion of the knee. At regions where the femoral component interfaces with the insert during extension and during an initial range of flexion of the knee, the femoral component's radius of curvature (R 1 ) for flexion rotation is larger than its radius of curvature (R 3 ) for varus/valgus rotation. In a preferred embodiment, the surface of the tibial tray is convex and spherically curved, and the insert is free to move in both the posterior-anterior direction and the medial-lateral direction with respect to the tibial tray.
Inventors:
Daniel Delfosse
Walter Zuppel
Christoph Funk Heuser
Walter Zuppel
Christoph Funk Heuser
Application Number:
JP2004502872A
Publication Date:
November 24, 2011
Filing Date:
May 08, 2003
Export Citation:
Assignee:
Mathys Medizinaltechnik AG
International Classes:
A61F2/38; A61F2/00; A61F2/30; A61F2/42; A61F2/44; A61F2/46
Domestic Patent References:
| JP2000514338A | 2000-10-31 | |||
| JPH09206322A | 1997-08-12 | |||
| JPH06233790A | 1994-08-23 | |||
| JPH04218155A | 1992-08-07 | |||
| JPS6077752A | 1985-05-02 | |||
| JPS51116095A | 1976-10-13 | |||
| JP2000116682A | 2000-04-25 |
Foreign References:
| WO2000044316A1 | 2000-08-03 | |||
| FR2676916A1 | 1992-12-04 |
Attorney, Agent or Firm:
Yoshihiro Shimizu
Shinichi Abe
Yuji Tsujida
Shinichi Abe
Yuji Tsujida