Expandable intervertebral implant
US9943418B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2017 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Jan 9, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2310/00101
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implant for therapeutically separating bones of a joint has two endplates each having an opening through the endplate, and at least one ramped surface on a side opposite a bone engaging side. A frame is slideably connected to the endplates to enable the endplates to move relative to each other at an angle with respect to the longitudinal axis of the implant, in sliding connection with the frame. An actuator screw is rotatably connected to the frame. A carriage forms an open area aligned with the openings in the endplates. The openings in the endplates pass through the carriage to form an unimpeded passage from bone to bone of the joint. The carriage has ramps which mate with the ramped surfaces of the endplates, wherein when the carriage is moved by rotation of the actuator screw, the endplates move closer or farther apart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.