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:
Jan. 31, 1989
Filed:
Feb. 08, 1988
Shigeru Nakajima, Tokyo, JP;
Olympus Optical Co. Ltd., Tokyo, JP;
Abstract
An endoscope comprising an elongated insertion section inserted into the cavity of a human body, an operating section connection to an end of the inserted section and controlling the inserted section from outside the human body, and a universal code extending from the operating section. The universal code has a connector arranged at that end thereof which is opposite to the operating section, and connected to water, air and gas sources. Liquid tubes extend through the inserted and operating sections and universal code to enable the gas, air and water sources to communicate with the outside through the foremost end of the inserted section. A switch valve is arranged within these liquid tubes, dividing them into upper and lower side tubes. The switch valve is attached to the operating section to selectively communicate with or shut off the upper and lower side tubes. When they are shut off, air which has leaked from the gas source can be released through a leak passage to the outside and the outlet opening of this leak passage can selectively be closed by hand.