Clifford G Kersey

7490607, Feb 17, 2009

Apr 11, 2005

11/103167

Douglas K. Bottom - Watertown WI, US
Clifford G. Kersey - Oregon WI, US
Steven A. Jandl - Lodi WI, US
John E. Klaus - Cottage Grove WI, US

The General Electric Company - Schenectady NY

A61M 11/00

12820312, 12820315

A cassette for vaporization of anesthetic agent for delivery to a patient is arranged to be received by an anesthesia machine which has control mechanisms for controlling vaporization of the agent. In a preferred arrangement, the cassette includes a housing for receiving, containing and emitting anesthetic agent. A sensor, such as a pressure sensor or a temperature sensor is embedded in the housing for obtaining a value of the agent contained in the reservoir. The sensor is operatively connected to the reservoir to obtain an accurate value of the agent. A communication link is provided between the sensor and the control mechanisms of the anesthesia machine when the cassette is received by the anesthesia machine. The cassette thus provides a simplified arrangement that efficiently and accurately provides values of the anesthetic agent being vaporized in the reservoir.

56645619, Sep 9, 1997

Sep 26, 1995

8/533909

Clifford G. Kersey - Oregon WI

The BOC Group plc - Windlesham

A61M 1500
A61M 1610
F23D 1100
F23D 1400

12820326

An anesthetic vaporizer having a means of mixing the anesthetic agent with a relatively low flow of carrier gas or a larger amount of carrier gas. A valve is operable by the user to select between the high flow anesthesia where the carrier gas and anesthetic agent are mixed in a mixing chamber and the low flow anesthesia where the carrier gas and anesthetic agent are diverted directly into the patient circuit. Accordingly, the anesthetic vaporizer is usable for high flow anesthesia, however, when used for low flow, the diverted flow allows more rapid response by eliminating the large volume of the mixing chamber.

60240873, Feb 15, 2000

Oct 9, 1997

8/948114

Clifford G. Kersey - Oregon WI
Gordon G. Sansom - Sun Prairie WI
Frederick J. Montgomery - Sun Prairie WI

Ohmeda Inc. - Liberty Corner NJ

A61M 1500

12820312

An emergency oxygen system that provides a flow of oxygen to the patient undergoing anesthesia in the event of a detected fault in the overall supply and mixing system of the anesthesia system. The normal design of such supply and mixing systems for an anesthesia system provides oxygen and at least one other gas that are mixed together in a desired proportion to be provided to a vaporizer and then to the anesthesia system as fresh gas. In the present system, a processor continuously monitors the output flows from those proportioning mixing valves. When the processor determines that those flows from the proportioning valves are off by a predetermined amount, indicative of a fault in the system, the processor immediately shuts off the supply of any gases other than oxygen and also provides a flow of oxygen to a bypass line that bypasses the oxygen proportioning valve, thus assuring a supply of oxygen to the patient despite the fault. A manual valve may be included in the bypass line so that the clinician can control the flow of oxygen and a flowmeter is provided so the clinician can visually note the flow and control that flow accordingly.