Damping element and device for stabilization of adjacent vertebral bodies
US7377921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Aug 18, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/7004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A damping element (1) includes: (a) two spring elements (2, 4) which are coaxial with or parallel to a longitudinal axis (3) and two axially end-side connectors (5, 6), where (b) the first spring element (2) exhibits a spring rate F, (c) the second spring element (4) exhibits a spring rate f, and (d) the spring rates F and f are different. A device stabilizing adjacent vertebras, comprising (a) N pedicle screws of hooks (12), where N≧3 and where (b) each pedicle screw or pedicle hook (12) includes a receiving device (13) receiving a longitudinal affixation device (7) and where (c) an element (14) acting as a spring is inserted between two adjacent pedicle screws (12) or pedicle hooks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.