Prosthetic vessels for stress at vascular graft anastomoses

Details Prosthetic vessels for stress at vascular graft anastomoses Prosthetic vessels for stress at vascular graft anastomoses

1990-03-20

1992-04-14

Isabella, David J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Arterial prosthesis

Stent structure

623 12, A61F 206

Patent

active

051044021

ABSTRACT:
Prosthetic vessels having improved resistance to occlusion by tissue reaction upon implantation by reducing transmural stresses are also disclosed. Prostheses having elliptical cross-sections governed by the maximum strain expected in the natural vessel and possessing a higher bulk compliance than previous designs are provided. Additionally, novel methods are presented for implanting improved prostheses by using angled bias cuts to produce an elliptical cross-section at each end of the natural vessel section receiving the prosthesis. In accordance with preferred embodiments, vessels are provided where the cross-sectional geometry is approximated by the equations:

REFERENCES:
patent: 3155095 (1964-11-01), Brown
patent: 4441215 (1984-04-01), Kaster

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