Modular prosthetic joint components
US6129764A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 1998 |
| Grant date | Oct 10, 2000 |
| Priority date | — |
| Expiry date | Nov 24, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0008
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Modular prosthetic shoulder components include a number of different sized humeral heads, each having a spherical outer surface and an interior tapered bore, a frustroconical intermediate head component dimensioned to lockingly mate with the tapered bore of the humeral heads and having a diametrical slot, and a humeral stem trunnion component having a rectilinear peg dimensioned to lockingly engage the diametrical slot in the intermediate head component. The components are assembled by inserting the intermediate head component into the tapered bore of a humeral head, inserting the peg of the trunnion component into the slot of the intermediate head component, and pressing the components together. The intermediate head component taper locks with the humeral head and force-fit locks onto the peg of the trunnion component. Prior to pressing the components together, the humeral head is movable relative to the trunnion component in three planes thereby allowing the practitioner to locate the humeral head in the same position as the organic humeral head which is being replaced. The components of the invention may also provide utility in other prosthetic joints such as prosthetic hip join…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.