초록 ▼

The present invention provides a prosthetic cover (12) shaped to form a replacement nucleus pulposis (56) for an intervertebral disc (50), said cover comprising a permeable layer of an immunologically neutral material terminating in a valve structure (16) to allow the introduction of a hydrogel mate

The present invention provides a prosthetic cover (12) shaped to form a replacement nucleus pulposis (56) for an intervertebral disc (50), said cover comprising a permeable layer of an immunologically neutral material terminating in a valve structure (16) to allow the introduction of a hydrogel material (14); characterized in that a transudative material is disposed on the intended inner face of the cover to allow a through flow of low molecular weight materials only.

대표청구항 ▼

1. In a valve structure adapted for use with a prosthetic device, said structure comprising a body with a longitudinal bore therethrough, said body comprising means for the attachment of a prosthetic cover shaped to form a replacement nucleus pulposis for an intervertebral disc nucleus to the exteri

1. In a valve structure adapted for use with a prosthetic device, said structure comprising a body with a longitudinal bore therethrough, said body comprising means for the attachment of a prosthetic cover shaped to form a replacement nucleus pulposis for an intervertebral disc nucleus to the exterior of the structure and means for the reversible attachment of the valve body to an introducer, said introducer allowing injection of a hydrogel material, the improvement which provides that said introducer is adapted to accommodate an introducer rod and that the valve body is adapted to anchor the prosthetic device within a disc space.