2440809-A is referenced by 50 patents and cites 5 patents.

A heart valve prosthesis 4 has valve leaflets 5 incorporating residual stresses such that the leaflet is relaxed in a position intermediate its open and closed positions, thereby reducing the maximum bending stress experienced by the leaflets. Preferably, the leaflets are fabricated from bovine or porcine pericardial material harvested from a region of incipient low calcium content. Pre-forming and fixing of the leaflets 5 creates a rapid change in direction of the surface which modifies the stresses within the material. The valve can be attached to the heart using a sewing ring (9, figure 4) or a stent.

Title
Prosthetic heart valve with leaflets curved by residual stresses
Application Number
GB20070014504 20070726
Publication Number
2440809A
Application Date
July 26, 2007
Publication Date
February 13, 2008
Inventor
Zadeh Seyed M Ali Dr Mirnajafi
US
Tansley Geoffrey Douglas
GB
Assignee
Zadeh Seyed M Ali Dr Mirnajafi
US
Tansley Geoffrey Douglas
GB
IPC
A61F 02/24
A61F 02/24
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