Arterial graft prosthesis
First Claim
1. An arterial graft prosthesis formed of a core zone of porous elastomer disposed about the longitudinal axis of the prosthesis, an inner zone of solid elastomer concentric with and homogeneously joined to the inside of said zone of porous elastomer, an outer zone of solid elastomer, said outer zone of solid elastomer being concentric with and homogeneously joined to the outside of said zone of porous elastomer.
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Accused Products
Abstract
An arterial graft prosthesis comprises a first interior zone of a solid, segmented polyether-polyurethane material surrounded by a second zone of a porous, segmented polyether-polyurethane and a third zone immediately surrounding said second zone and of a solid, segmented polyether-polyurethane. The interior zone may have a lining or blood interface of a microporous zone of segmented polyether-polyurethane, and the exterior, third zone may be surrounded by a tissue interface of a microporous zone of segmented polyether-polyurethane. In some instances the exterior may be confined by a tube of substantially non-stretchable netting fastened in place at chosen, spaced intervals or other forms of reinforcement may be employed. Other materials can be used.
271 Citations
15 Claims
- 1. An arterial graft prosthesis formed of a core zone of porous elastomer disposed about the longitudinal axis of the prosthesis, an inner zone of solid elastomer concentric with and homogeneously joined to the inside of said zone of porous elastomer, an outer zone of solid elastomer, said outer zone of solid elastomer being concentric with and homogeneously joined to the outside of said zone of porous elastomer.
- 4. An arterial graft prosthesis as defined in claim2 1 or 2, together with a blood interface zone of microporous elastomer concentric with and homogeneously joined to the inside of said inner zone of solid elastomer.
Specification