The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 1995
Filed:
Jun. 06, 1994
Nobuhiko Washizuka, Tokyo, JP;
Yasuhiko Oomagari, Tokyo, JP;
Tsuruo Hatori, Tokyo, JP;
Tsuyoshi Tsukagoshi, Tokyo, JP;
Minoru Tsuruta, Tokyo, JP;
Seiji Kuramoto, Tokyo, JP;
Shuichi Kimura, Tokyo, JP;
Akio Nakada, Tokyo, JP;
Shiro Bito, Tokyo, JP;
Shinichi Nishigaki, Tokyo, JP;
Kenji Yoshino, Tokyo, JP;
Keisuke Saito, Tokyo, JP;
Yasuo Goto, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A trocar comprises an obturator having a piercing tip, and a cannula for forming a passage in tissue that is punched by the piercing tip. The cannula is formed from a flexible tube or a coil tube and transforms and libitum in accordance with the shape of the surgical tool that is to be inserted into the body cavity through the cannula. Therefore, the trocar of the invention allows insertion of a surgical tool curved in a circular arc into the body cavity without requiring no enlargement of the inside diameter of the cannula.