Bone fastener
US5968044A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1996 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Feb 2, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S606/916
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bone fastener including an expandable member having an axial channel and an elongated element insertable into the axial channel is described. The expandable member is configured to be insertible into a bore drilled in bone. The distal end of the expandable member also may include a structure for axially releasing the expandable member from an emplacement device that places the expandable member into a bone opening. In one embodiment, the structure for axially releasing includes a frangible membrane capable of being severed from the expandable member during emplacement of the expandable member in a bone opening. A rivet for coupling an object to bone for use with an expandable member is also described. The distal end of the elongated element is shaped into a radially projecting portion adapted for engagement with a washer that contacts the object to be coupled. The washer, having upper and lower surfaces and a bore defined between the surfaces, is disposed around a portion of the shaft. The elongated element is adapted for movement independent of the washer since the radial projection of the element has a different radius of curvature than the washer. An apparatus for use within a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.