04222126 is referenced by 505 patents and cites 7 patents.

A polyurethane heart valve has a semirigid frame composed of a base ring and three struts, and an elastomeric membrane integral and unitary with the frame, the contours of which make up three leaflets of the valve. The leading edges of the leaflets which form the commissure line are reinforced with a narrow elastomer band. The leaflets are further reinforced by radiating lines projected from the frame into the leaflet and which simulate collagen formation in natural leaflets. In addition, the transition between the frame and the leaflets is tapered.

Title
Unitized three leaflet heart valve
Application Number
5/969571
Publication Number
4222126
Application Date
December 14, 1978
Publication Date
September 16, 1980
Inventor
Norio Iriguchi
Shizuoka
JP
John W Boretos
Rockville
MD, US
Agent
Browdy and Neimark
Assignee
The United States of America represented by the Secretary of the Department of Health Education & Welfare
DC, US
IPC
A61F 1/22
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