Multi-level minimally invasive spinal stabilization system
US8535352B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Aug 23, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B17/704
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spinal alignment system for interconnecting vertebral bodies is disclosed. The system includes a bone screw polyaxially connected to a seat. The seat includes a top opening, a first rod receiving portion and a second rod receiving portion, a first rod channel and a second rod channel. The system is implanted into a first vertebral body. A first rod is introduced to the seat through the top opening in a first orientation and connected to the first rod receiving portion. A second rod is introduced to the seat through the top opening in a first orientation and connected to the second rod receiving portion. The first and second rods are each moved into a second orientation such that the rods project through the first and second rod channels, respectively. The rods are capable of polyaxial movement with respect to the seat for landing the opposite ends of the rods in adjacent seats of screw systems implanted in other vertebral bodies. A closure mechanism that is configured to lock the polyaxial motion of the rods with respect to the seat and to lock the polyaxial motion of the bone screw with respect to the seat simultaneously or independently is provided. The seat is connectable to a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.