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:
Sep. 13, 1988
Filed:
Jun. 27, 1986
Toru Sato, Yonago, JP;
Toshihisa Hasegawa, Yonago, JP;
Tottori University, Tottori, JP;
Abstract
A cuff regulator for an endotracheal-tube cuff comprising a first chamber connected to a pressurized gas supply source, and a second chamber connected to the first chamber through a pressure regulating valve and having an opening connected to a cuff of the cuffed endotracheal-tube. An orifice open to the external environment is provided in a part of a gas conduit between the second chamber and the cuff. A third chamber is also provided having the same pressure as that of the environment in which the cuff is existent. A valve driving apparatus drives the pressure regulating valve in response to the pressure difference between the third chamber and the second chamber, and a pressure setting device sets a desired cuff pressure at which opening and closing operations of the pressure regulating valve are actuated. With such construction, gas having a pressure higher than the desired cuff pressure is supplied from the pressurized gas supply source to the first chamber, and the cuff pressure is maintained at the desired cuff pressure set by the pressure setting device while the gas is slowly discharged toward the external environment through the orifice.