Polymeric acetabular cup
US7402177B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2005 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Jul 19, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0098
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An orthopedic prosthesis comprising a polymeric cup member for use in a ball and socket joint is disclosed. The cup member may include several advantageous features such as a multi-directional and multi-planar channel having an undercut area that provides a mechanical lock between the cup member and a fixation material for enhanced fixation. The cup member may further comprise a plurality of spacers for ensuring an even mantle of fixation material between the cup member and the bone, a series of divots for enhancing fixation, a locating feature that permits a physician to visualize and locate the cup member in the socket of the patient's bone on appropriate medical equipment, and a lead-in chamfer located between a terminal edge and an interior surface of the cup member. Further, the terminal edge of the cup member may comprise a planar rim or may alternatively comprise a hood located distally from said terminal edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.