VOID METAL COMPOSITE MATERIAL AND METHOD

A porous metallic material having controlled patterns of interconnected voids specifically adapted for tissue ingrowth application. The material can be produced having interconnected voids of spherical or other desired shape, as well as oriented voids arranged in a pre-selected spatial pattern. The...

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Bibliographische Detailangaben
Hauptverfasser:	SUMP K,US, WHEELER K,US, KARAGIANES M,US
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CASTING DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HUMAN NECESSITIES HYGIENE MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MEDICAL OR VETERINARY SCIENCE ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PERFORMING OPERATIONS POWDER METALLURGY PROSTHESES TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING TREATMENT OR PROTECTION OF EYES OR EARS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	A porous metallic material having controlled patterns of interconnected voids specifically adapted for tissue ingrowth application. The material can be produced having interconnected voids of spherical or other desired shape, as well as oriented voids arranged in a pre-selected spatial pattern. The method of producing the porous structure involves the arrangement of solid expendable void former within a receiving cavity of a mold or form in a pattern corresponding to the size, shape and spatial pattern of the voids desired in the final matrix. Metallic powder formed of a biocompatible material is packed about the expendable void former and the composite material is subjected to high energy rate forming pressures to densify its structure. The expendable void former is then removed and the remaining matrix of metal is sintered to further strengthen the web structure that remains after removal of the void former.