Expandable vertebral implant
US10709571B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2016 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Oct 23, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/4635
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A joint spacer therapeutically maintains separation of bones of a joint. A carriage is slideably retained within the frame and has at least one ramped surface. An actuator screw is threadably engaged with the frame, and rotatably connected to the carriage, to cause the carriage to slideably move within the frame when the actuator screw is rotated. First and second endplates engage the bones of the joint, and each has at least one ramped surface that is mateable with the ramped surface of the carriage, whereby when the carriage is slideably moved by rotation of the actuator screw, the endplates ramped surface slides against the carriage ramped surface to cause the endplates to move along an axis transverse to the longitudinal axis of the frame, to increase the height of the spacer. Piercing elements are connected to the carriage to pierce bone of the joint when the carriage is moved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.