Expandable spinal fusion cage
US11007067B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2019 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Jul 30, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00023
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device, system, and method for performing a spinal procedure. The device includes first and second shape-memory outer platforms, the outer platforms expanding at a temperature greater than the transformative temperature, a core member having first and second expansion bodies and first and second wedge members, the first expansion body being coupled to the first outer platform and the second expansion body being coupled to the second outer platform, and a screw rotatably disposed within the core member, the screw passing through at least a portion of each of the first and second wedge members. Rotation of the screw causes the first and second wedge members to move toward each other and the first and second expansion bodies to move away from each other. Thus, reaching a transformation temperature and rotating the screw expands the device to come in contact with and anchored against both of the adjacent vertebrae.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.