Intervertebral prosthesis
First Claim
1. An implant consisting of an elongated, elastic body which is form-elastic and which takes on the form of a spiral in the force-free state, whereby a hydrogel member which is affixed to the body in a dehydrated state has the possibility to enlarge its volume after implantation.
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Abstract
The invention deals with an implant, in particular, an intervertebral prosthesis, which consists of an elongated elastic body which is form-elastic and takes on the form of a spiral S in the force-free state. The spiral can be drawn by a reverse winding up into an insertion instrument which is only unsubstantially larger in the insertion region than the cross-section of the elongated elastic body in order to reach the inner space of an intervertebral disc through a small opening in the annulus fibrosus and to push in and sever off the self-winding spiral when the interior is filled. This has the advantage that inner spaces of differing sizes can be filled with the same spiral.
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Citations
7 Claims
- 1. An implant consisting of an elongated, elastic body which is form-elastic and which takes on the form of a spiral in the force-free state, whereby a hydrogel member which is affixed to the body in a dehydrated state has the possibility to enlarge its volume after implantation.
Specification