Polymer filled spinal fusion cage
US6332894A · kind A · utility
440Cited by
22References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2000 |
| Grant date | Dec 25, 2001 |
| Priority date | — |
| Expiry date | Mar 7, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2430/38
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An orthopaedic implant for implanting between adjacent vertebrae and a spine, includes a generally annular bag; and a hardened polymer with the bag. The method of fusing adjacent vertebrae in a spine includes the steps of forming an access hole in an annulus of a disc between the adjacent vertebrae; removing the nucleus within the disc to form a cavity surrounded by the annulus; placing a generally annular bag within the cavity; filling the bag with a polymer; injecting bone particles into the cavity surrounded by the annular bag; and hardening the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.