| 摘要 |
The invention concerns a biological heart valve prosthesis having no annular support (stentless bioprosthesis) and including a special configuration of fluid inlets and outlets in the valve with the purpose of achieving low resistance perfusion of the connected body areas, a good cleaning process for preventing the formation of thrombosis and simplification of implantation technique by modifying the design of the valve. Possible valve geometry deformation, which are likely to occur in stentless prosthesis, is prevented. The novel bioprosthesis consists of a xenogenic aortic root of a mammalian donor, preferably a pig, that has been optionally pretreated for implantation purposes, for instance with glutaraldehyde, whereby a hole has been placed as an additional coronary outlet at a distance of approximately 120 degrees relative to both original coronary outlets in a surgically or hemodynamically appropriate point, generally in the valve sinus having no original coronary outlet and whereby one of the two original coronary outlets is closed in an appropriate manner from a surgical point of view.
|
