Surgical implant devices and systems including a sheath member
US8652175B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2004 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Mar 24, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00991
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical implant is provided that includes first and second abutment surfaces between which are positioned a force imparting mechanism. A sheath is positioned between the first and second abutment surfaces, and surrounds the force imparting mechanism. The sheath is fabricated from a material that accommodates relative movement of the abutment members, while exhibiting substantially inert behavior relative to surrounding anatomical structures. The sheath is generally fabricated from expanded polytetrafluoroethylene, ultra-high molecular weight polyethylene, a copolymer of polycarbonate and a urethane, or a blend of a polycarbonate and a urethane. The force imparting member may include one or more springs, e.g., a pair of nested springs. The surgical implant may be a dynamic spine stabilizing member that is advantageously incorporated into a spine stabilization system to offer clinically efficacious results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.