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:
Dec. 30, 1980
Filed:
Jul. 21, 1978
Hisatake Aoshiro, Tokyo, JP;
Machida Endoscope Co., Ltd., Tokyo, JP;
Abstract
The present invention discloses herewith an endoscope by which pressurized air is led into an inner portion of the endoscope. A plug of a light-transmitting optic bundle tube which communicates with the inner portion is covered, partially or totally, by a gas-tight cap which has a pressure inlet. The pressurized air is led from the pressure inlet into the inner portion of the endoscope through a terminal part or a gap of the plug. By these provisions, an internal pressure of the endoscope is raised to an extent not smaller than the external pressure of a cleanser in order to prevent the cleanser from flowing into the inner portion of the endoscope when washing and/or sterilizing a non-waterproof endoscope. In addition, a pinhole on a flexible sheath can easily be detected by testing a leakage of the pressurized air as for a waterproof endoscope.