| 摘要 |
A device for making a replacement heart valve having a plurality of cusps. The combination includes a mold means for forming a tissue, suitably an animal tissue and particularly a homologous tissue, into cusp form. A clamping means causes the mold means to form the tissue into a cusp shape, and a tissue-engaging means, such as a trim guide, holds such tissue in place, advantageously in unstretched condition, to facilitate suturing and trimming to desired, predetermined size. Such tissue-engaging means may be a plurality of pins adapted to pierce the tissue and hold it in place. The mold means, clamping means, and tissue-engaging means are all rotatable and are movable arcuately with respect to the long axis of the combination or assembly to enable easy access to the workpiece or valve. A valve stent is brought into engagement with the mold means, clamp means, and tissue-engaging means, so that the tissue can easily be sutured to the stent with ready access thereto and in a rapid operation which can be carried out by one operator.
|
