| 摘要 |
A tissue constriction device comprises a tissue-surrounding part defining a central, tissue-receiving opening which, when in a tissue-receiving configuration, has a first diameter and which, when in a tissue-constriction configuration, has a second diameter less than the first diameter, at least a shape memory portion of the tissue-surrounding part being formed of a shape memory material with the tissue-constriction configuration corresponding to a memorized shape of the shape memory portion. |
