Expandable intervertebral implant with wedged expansion member
US8123810B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 20, 2005 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Nov 27, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An expandable intervertebral implant is described for insertion between vertebrae of a human spine. The intervertebral implant includes an upper body that engages a first vertebra of the human spine, a lower body that engages a second vertebra of the human spine, an insert, and an expansion member. The expansion member may include a first angled portion and a second angled portion. The expansion member may be advanced such that a first angled portion of the expansion member engages an angled portion of the insert to increase a separation distance between the upper body and the lower body of the intervertebral implant. An advancing element may engage a second angled portion of the expansion member such that a direction of advancement of the advancing element is different than the direction of advancement of the expansion member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.