PROSTHESIS AND METHOD FOR REPLACING THE NUCLEUS PULPOSUS OF AN INTERVERTEBRAL DISC OR FOR REPLACING AN ENTIRE INTERVERTEBRAL DISC

A prosthetic nucleus pulposus (5) for replacing the natural nucleus pulposus of an intervertebral disc. The prosthetic nucleus pulposus comprises a partially collapsed sealed envelope formed from a material which is permeabl e to extracellular body fluid. The envelope contains a solute (20) which pr...

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Bibliographische Detailangaben
Hauptverfasser:	LI, LEHMANN K, CORRAO, ERNEST N., JR, MAGUIRE, STEPHEN A, COVIELLO, SALLIE KATE, WARD, ROBERT STANTON, LEONARD, EDWARD F
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	A prosthetic nucleus pulposus (5) for replacing the natural nucleus pulposus of an intervertebral disc. The prosthetic nucleus pulposus comprises a partially collapsed sealed envelope formed from a material which is permeabl e to extracellular body fluid. The envelope contains a solute (20) which provides an osmotic potential across the walls of the envelope. In use, the partially collapsed envelope is surgically implanted in the hallowed-out interior of an intervertebral disc and is allowed to absorb fluid, whereby expansion of the envelope and subsequent disc expansion is accomplished.