Patent ID: 7621272
Filing Date: 2009-11-24
Classification: A61M

Abstract:
1. A method for facilitating emergence of a subject from inhaled anesthetic by causing the subject to inhale gases including an above-normal amount of CO 2 which increases the rate which blood flows through the subject's brain while eliminating or substantially limiting the amount of inhaled anesthetic in the gases inhaled by the subject from the breathing circuit to increase the rate of removal of the anesthetic from the patient, the method comprising: receiving an amount of exhaled gas which has been exhaled by the subject, the exhaled gas being rich in anesthetic and being rich in CO bypassing an anesthetic filter within the breathing circuit such that the exhaled gases do not pass through the filter, the anesthetic filter being configured to remove and retain anesthetic from the previously exhaled gas within the filter to minimize or eliminate the reintroduction of anesthetic into the breathing circuit while allowing CO flowing at least the previously exhaled gases through the anesthetic filter within the breathing circuit before the previously exhaled gases are inhaled by the subject to remove and retain the anesthetic from the previously exhaled gases while allowing CO2 to pass through the anesthetic filter before they are inhaled by the subject to eliminate or substantially reduce the amount of inhaled anesthetic in the previously exhaled gases to increase the rate of removal of the anesthetic from the patient and increase CO