Osteogenic fusion devices
US5984967A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1996 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Feb 19, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2430/38
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An interbody fusion device in one embodiment includes a tapered body defining a hollow interior for receiving bone graft or bone substitute material. The body defines exterior threads which are interrupted over portions of the outer surface of the device. The fusion device includes truncated side walls so that on end view the body takes on a cylindrical form. The side walls are provided with vascularization openings, and the body wall device includes opposite bone ingrowth slots extending through the interrupted thread portion of the body. In another embodiment, the tapered body is solid and formed of a porous biocompatible material having sufficient structural integrity to maintain the intradiscal space and normal curvature. The material is preferably a porous tantalum having fully interconnected pores to facilitate complete bone tissue ingrowth into the implant. In further embodiments, the fusion devices are provided with osteogenic material to facilitate bone ingrowth. The osteogenic material can include bone morphogenic proteins in a suitable carrier determined by the configuration of the fusion device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.