Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Reexamination Certificate
2005-04-11
2009-02-17
Douglas, Steven O (Department: 3771)
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
C128S203150
Reexamination Certificate
active
07490607
ABSTRACT:
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.
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S/5™ Anesthesia Delivery Unit Aladin™ Cassette; Datex-Ohmeda Division, Instrumentarium Corp., P.O. Box 900, FIN-00031, Datex-Ohmeda, Finland; www.datex-ohmeda.com, last visited Apr. 11, 2005.
Bottom Douglas K.
Jandl Steven A.
Kersey Clifford G.
Klaus John E.
Andrus Sceales Starke & Sawall LLP
Douglas Steven O
The General Electric Company
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