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:
Nov. 26, 1985
Filed:
Jul. 27, 1983
James Watt, New York, NY (US);
Other;
Abstract
A therapeutic inhalator variably proportions and mixes a plurality of pressurized therapeutic gases at a high volume flow and supplies them on a demand basis rate to a patient from a mixing chamber inside a body of generally cylindrical configuration. Gases, such as carbon dioxide, oxygen, and nitrous oxide, are delivered from separate supply circuits to separate demand valves. Demand valves located at the inlet portals of the inhalator body are capable of delivering gas to the mixing chamber when unblocked by an aperture in the wall of the mixing chamber which acts as a proportioning member by regulating which of the inlet portals are coupled to the mixing chamber and what extent each portal is exposed. There are one or more apertures in the proportionary member. The mixing chamber communicates the mixed gases to the patient via a wide-mouthed opening which fits over the nose and mouth. Each demand valve which is actively coupled to the mixing chamber admits gas thereto in response to a drop in pressure at a predetermined level in the mixing chamber as a result of the patient's inhalation. Selection and proportioning of gases supplied to the mixing chamber is accomplished by changing the position of the proportioning member.