Global Patent Index - EP 1039854 A1

EP 1039854 A1 2000-10-04 - TOTAL KNEE PROSTHESIS WITH TIBIAL PLATEAU MOBILE IN ROTATION

Title (en)

TOTAL KNEE PROSTHESIS WITH TIBIAL PLATEAU MOBILE IN ROTATION

Title (de)

TOTALE KNIEPROTHESE MIT DREHBAREM TIBIALLAGER

Title (fr)

PROTHESE TOTALE DE GENOU A PLATEAU TIBIAL MOBILE EN ROTATION

Publication

EP 1039854 A1 (FR)

Application

EP 98966704 A

Priority

  • BE 9701036 A
  • EP 9808559 W

Abstract (en)

[origin: WO9930649A1] The invention concerns a total knee prosthesis, comprising a femoral implant (1), a tibial plateau (3), mounted on a tibial base plate (2) rotating about a vertical axis (YY), the femoral implant comprising two lateral condyles (5) shaped for co-operating with corresponding concave support surfaces (7) of the tibial plateau, to enable flexion-extension movements and internal-external rotation about the vertical axis; the tibial plateau support surfaces (7) and the condyle surfaces (5a) are congruent up to a flexion of about 90 degrees; stop means are provided on the plateau (12) and the condyles (14) to bring about, at the end of the flexion beyond 90 degrees, a roll back in the antero-posterior plane of the condyles and their support zones (11) on the tibial plateau, to ensure posterior stabilisation of the femoral implant; the femoral implant (1) roll back at the end of the flexion enables to optimise the functioning of the extensor apparatus reducing the muscular strength required from the patient for rising from a sitting position or for climbing stairs, making up for the absence of the posterior cruciate ligament.

IPC 1-7 (main, further and additional classification)

A61F 2/38

IPC 8 full level (invention and additional information)

A61F 2/38 (2006.01)

CPC (invention and additional information)

A61F 2/3886 (2013.01); A61F 2/3868 (2013.01)

Citation (search report)

See references of WO 9930649A1

Designated contracting state (EPC)

BE DE FR GB IE IT

EPO simple patent family

WO 9930649 A1 19990624; AU 2418999 A 19990705; BE 1011626 A3 19991109; EP 1039854 A1 20001004; ZA 9811433 B 20000614

INPADOC legal status


2002-01-09 [18W] WITHDRAWN

- Date of withdrawal: 20011115

2000-10-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000624

2000-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): BE DE FR GB IE IT