Abstract:
A prosthetic heart valve having an inner support ring of rigid non-thrombogenic material and a malleable metallic outer support ring positioned about the periphery of the inner ring and bent into the immovable clamping relationship therewith. A portion of a tubular fabric member is retained between the two clamped rings, and the remainder of the fabric member is folded into a plurality of layers about the periphery of the outer ring to form a suturing site. Typically, the outer ring carries an outwardly extending flange on one side, which is overlaid by a single thickness of the tubular fabric, to hold the multiple layer suturing site away from the orifice of the inner ring.
Abstract:
A prosthetic heart valve having an inner support ring of rigid non-thrombogenic material and a malleable metallic outer support ring positioned about the periphery of the inner ring and bent into the immovable clamping relationship therewith. A portion of a tubular fabric member is retained between the two clamped rings, and the remainder of the fabric member is folded into a plurality of layers about the periphery of the outer ring to form a suturing site. Typically, the outer ring carries an outwardly extending flange on one side, which is overlaid by a single thickness of the tubular fabric, to hold the multiple layer suturing site away from the orifice of the inner ring.
Abstract:
A prosthetic heart valve is disclosed having a support ring which carries means for retaining a movable closure element in positions adjacent one side of the ring. The support ring has a fabric wrapping which defines, as a suturing element, an annular protrusion of fabric of double thickness extending from the side of the ring which is opposite the side adjacent the closure element.
Abstract:
A clamp for securely holding ends of tubing together in end-to-end relationship is disclosed, in which the tubing so held carries a flange about its end. The clamp comprises four separable sections of identical shape, in which each section has means for locking together with another section to form two identical clamp halves. Each clamp half defines a bore to receive and hold tubing. The bore has an enlarged portion to receive and hold the tuning flange. Each clamp half also defines arms and slots positioned so that the arms of each clamp half are capable of engaging the slots of the other clamp half to secure the two halves together with the tuning ends mounted in each clamp half being secured together in end-to-end relationship.