Device for sealing acetabular cup holes
US5888205A · kind A · utility
41Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1996 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Oct 1, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The metal shell of an acetabular cup has holes that allow a surgeon to screw the shell to pelvic bone. To prevent the debris of ultra-high molecular weight polyethylene ("UHMWPE") or other plastic liner in the shell from migrating through the holes, the present invention seals each screw-receiving hole with a thin UHMWPE disc. The disc snaps into an annular groove in the hole. With the disc in place, debris from the liner does not pass through the screw holes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.