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:
Feb. 19, 1991
Filed:
May. 22, 1989
Shinichi Nishigaki, Tokyo, JP;
Shiro Bito, Hachioji, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
The resectoscope apparatus of this invention comprises an elongate hollow sheath to be inserted into a body cavity, an electrode inserted through the sheath and resecting or coagulating tissues within the body cavity by using a high frequency current, an endoscope insertable part inserted through the sheath and having an optical system making the body cavity interior observable and an operating part having a guide tube part through which the endoscope insertable part is inserted and a sheath connecting part connected to the base end part of the sheath and making the electrode operatable from outside the body. At least one of the guide tube part and sheath connecting part is formed of an electric insulating material for electric insulation.