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Cryopreserved homografts and other stentless bioprosthetic heart valves having natural tiissue sewing rings
Cryopreserved homografts and other stentless bioprosthetic heart valves having natural tiissue sewing rings
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机译:冷冻保存的同种异体移植物和其他具有天然组织缝合环的无支架生物人工心脏瓣膜
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摘要
Pre-trimmed, cryopreserved homografts and other stentless bioprosthetic heart valves having natural tissue sewing rings formed thereon. The sewing ring may be formed of strip of pericardium or other suitable tissue. Material may be captured between the natural tissue sewing ring and a sub-valvular lip formed on the valve to impart a desired size or shape to the sewing ring. In the case of cryopreserved embodiments of the invention (e.g., cryopreserved human homografts) the sewing ring is attached to the valve by way of a natural tissue suture, biological glue or other attachment component that is capable of undergoing cryopreservation without breaking, excessive weakening, or other changes that prevent it from performing its attachment function.
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