Intervertebral spacer device having a wave washer force restoring element
US6758861B2 · kind B2 · utility
183Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Oct 16, 2022 |
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.