公开(公告)号：USD336918S

公开(公告)日：1993-06-29

申请号：US773074

申请日：1991-10-08

申请人： Midori Yonezawa ,  Toshiya Yoshida ,  Masaharu Sawatani ,  Yutaka Hatayama

设计人： Midori Yonezawa ,  Toshiya Yoshida ,  Masaharu Sawatani ,  Yutaka Hatayama

公开(公告)号：US07776023B2

公开(公告)日：2010-08-17

申请号：US12364989

申请日：2009-02-03

申请人： Yutaka Hatayama

发明人： Yutaka Hatayama

IPC分类号： A61B19/00 ,  A61M5/32

CPC分类号： B26F1/22

摘要： An hole-opening implement (5 or 50) for opening a hole in a soft material (2) has a first cutting part and a second cutting part. To pierce the soft material with the hole-opening implement, both cutting parts advances in the soft material while cutting the soft material. Such a state that the second cutting part remains in the soft material just after the first cutting part is passed through the soft material is assured so that a cut piece as bound to the soft material can remain after the opening. The first cutting part is formed at a tip of the hole-opening implement, and the second cutting part is disposed behind the first cutting part in the piercing direction of the hole-opening implement. Otherwise, the hole-opening implement may be constructed so that the first cutting part is sharp in section and the second cutting part is formed so as to have lower cutting force than the first cutting part.

摘要翻译： 用于打开软材料（2）中的孔的开孔工具（5或50）具有第一切割部分和第二切割部分。 为了用开孔工具刺穿软质材料，在切割软质材料的同时，两个切割部件均先进入软质材料。 确保第二切割部分刚好在第一切割部分通过柔软材料之后保留在柔软材料中的状态，使得在打开之后可以保留与软材料结合的切割片。 第一切割部形成在开孔器具的前端，第二切割部在开孔器具的穿刺方向上设置在第一切割部的后方。 否则，开孔工具可以被构造成使得第一切割部分具有尖锐的截面，并且第二切割部分形成为具有比第一切割部分更低的切割力。