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:
Jul. 12, 1994
Filed:
Nov. 30, 1992
Naomi Sekino, Tokyo, JP;
Kenji Noda, Sagamihara, JP;
Yutaka Yanagawa, Tokyo, JP;
Takeo Usui, Tokyo, JP;
Kouji Tanikawa, Tokyo, JP;
Kazuhiro Takahashi, Tokyo, JP;
Shiro Bito, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
An insufflation apparatus intended to insufflate gas supplied from a gas supply source into a cavity of the human body through a gas insufflating pipe, comprising a switch valve for opening and closing a gas supply pipe extending from the gas supply source to the gas insufflating pipe, a cavity pressure measuring unit arranged in the gas supply pipe to measure the pressure in the body cavity, a pressure setting section for setting an intended pressure in the body cavity, an arithmetic unit for calculating the difference of a value measured by the cavity pressure measuring unit relative to the value of pressure set by the pressure setting section, and a changeover control unit for changing over the timings at which the switch valve is opened and closed on the basis of values thus calculated by the arithmetic unit.