| 摘要 |
A method and apparatus are provided for use in the delivery of an inhalation anesthetic to a patient while employing a closed loop or rebreather gas recirculation system. The method and apparatus control th e system temperature to minimize heat buildup, including heat buildup resulting from an exothermic reaction between a patient's exhal ed breath and a scrubbing substance that removes a selec ted constituent from the patient's exhaled breath. The apparatus includes an en closure containing a scrubbing substance. The enclosure defines an influent opening for admitting the exhaled breath along a first path into the scrubbing substance and defines an effluent opening through which gases can be discharged from the enclosure. The apparatus also includ es a second path adjacent the first path between inlet a nd outlet openings whereby a coolant fluid can flow along the second path to re move heat from the interior of the enclosure.
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