Method of attaching spikes to an orthopaedic implant
US5755806A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Sep 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S623/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention is directed to a method of attaching spikes (34) to an orthopaedic implant such as an acetabular cup (22). The acetabular cup (22) is formed with at least one tapered hole (28) therein which extends from an outside diameter (30) to an inside diameter (32) of the cup. At least one spike (34) having a tapered end (38) is pressed into a corresponding tapered hole (28) of the cup (22), whereby an interference fit is created between the tapered end (38) and the tapered hole (28). The spike (34) is metallurgically bonded to the cup (22), such as by electron beam welding and heat treating. The inside diameter (32) of cup (22) is then finished.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.