| 摘要 |
A knife for ophthalmic surgery has a diamond blade (14) which protrudes at the forward end of a handle (11) through a slot in a footplate (16). The surface of the footplate which contracts the tissue (cornea or sclera, for example) to be incised has irregular castellations (28a, 28b, 28c, 28d, 28e, 28a', 28b', 28c', 28d', 28e') forming irregular grooves (32a, 32b, 34a, 34b, 32a', 32b', 34a', 34b') therebetween. Alternatively or in addition, the contact surface has protruding pins (140) which engage the tissue (sclera, usually) to be incised. |
