Intervertebral spacer device having a wave washer force restoring element
US6468310B1 · kind B1 · utility
323Cited by
29References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2001 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Jul 16, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00365
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intervertebral spacer device having a pair of opposing plates for seating against opposing vertebral bone surfaces, separated by at least one force restoring element. The preferred force restoring mechanism is a wave washer. In a first embodiment the wave washer is ring-shaped. In a second embodiment the wave washer is spiral-shaped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.