Patent · US Active

Hinged orthopaedic prosthesis

US7918893B2 · kind B2 · utility

27Cited by

46References

22Claims

0Family size

Assignee

DePuy Products, Inc. · US

Inventors

Kristen L. Romeis · Warsaw, US
Matthew D. Smith · Akron, US
Allan Ritchie · New Milton, GB

Key dates

Filing date	Sep 30, 2007
Grant date	Apr 5, 2011
Priority date	—
Expiry date	Sep 30, 2027

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F2220/0041
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An orthopaedic prosthesis includes a tibial bearing, a femoral component, and a hinge post coupled to the tibial bearing and the femoral component. The hinge post includes a medial and lateral axle. A pair of bushings are coupled to the axles and received in an internal chamber of the femoral component. The prosthesis may also include a plug received in the internal chamber and positioned to secure the hinge post to the femoral component. The femoral component is configured to rotate about an axis defined by the axles. In some embodiments, the femoral component may include a housing and a patella bearing separate from the housing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.