Removal of carbon dioxide and carbon monoxide from patient...

A - Human Necessities – 61 – M

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A61M 15/08 (2006.01) A61M 15/00 (2006.01)

Patent

CA 2562079

A method and system for the application of molecular sieves to the removal of carbon dioxide and carbon monoxide from the patient expired gases during anesthesia. The system is especially useful in anesthesia using any of the halogenated ether inhalation anesthetic agents. The expired gases are dried using a non-reactive desiccant to remove water, passed through a filter capable of removing particles larger than 0.3 microns, passed through a bed containing either natural or synthetic molecular sieves capable of removing carbon dioxide and carbon monoxide and then returned to the breathing circuit for recirculation to the patient.

L'invention concerne un procédé et un système comprenant l'application de tamis moléculaires pour éliminer le dioxyde et le monoxyde de carbone des gaz expirés par un patient pendant une anesthésie. Ce système convient en particulier pour les anesthésies comprenant l'utilisation d'un quelconque agent anesthésique à base d'éther halogéné administré par inhalation. Le procédé décrit consiste à sécher les gaz expirés au moyen d'un dessiccatif non réactif afin d'éliminer l'eau, à les faire passer à travers un lit contenant des tamis moléculaires naturels ou synthétiques permettant d'éliminer le dioxyde et le monoxyde de carbone, puis à les renvoyer dans le circuit respiratoire pour les recycler en direction du patient.

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