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US 5,755,797 AGranted
Intervertebral prosthesis and a process for implanting such a prosthesis
AssigneeSulzer Medizinaltechnik AG
InventorWalter Baumgartner
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AssigneeSulzer Medizinaltechnik AG
InventorWalter Baumgartner
Estimating the term…
An implant consisting of several support members (7), which are produced from an elastic plastic, is provided as a replacement for a part, which is no longer capable of bearing loads, of the core region of an intervertebral disk (3). The support members (7) are inserted one after the other into a central cavity (5) constructed in the core region by means of a tube (6) passing through an outer annular region (4) of the intervertebral disk (3) until said cavity is filled. When the cavity (5) becomes clogged with the filling members (7), they become deposited on the boundary walls of the annular region (4) and against one another and are elastically deformed under stress. Accordingly a universal implant which can be adapted to cavities (5) of any shape, and which forms a relatively compact, elastic support structure, can be achieved.
An intervertebral prosthesis for an intervertebral disk having a cavity formed in a central region thereof, the prosthesis comprising an implant having at least three elastically deformable support members individually inserted into the cavity and individually positioned therein relative to each other to replace at least a part of the central region of the intervertebral disk, the support members each having a substantially fixed volume within the cavity, wherein at least one of the support members has an inner recess.
An intervertebral prosthesis for an intervertebral disk having a cavity formed in a central region thereof, the prosthesis comprising:
An intervertebral prosthesis for an intervertebral disk having a cavity formed in a central region thereof, the prosthesis comprising:
Dependencies are inferred from the claim text.