초록 ▼

An anesthesia system with a filter located between a Y-connector and a mask or endotracheal tube for connecting with a patient. The filter operates two ways in that it filters during both inhalation and exhalation of the patient. The filter has a very low pressure drop and is small and compact, with

An anesthesia system with a filter located between a Y-connector and a mask or endotracheal tube for connecting with a patient. The filter operates two ways in that it filters during both inhalation and exhalation of the patient. The filter has a very low pressure drop and is small and compact, with a body having an internal volume of 50 cc or less to prevent the patient from rebreathing large volumes of unfiltered exhaled gas.

대표청구항 ▼

A anesthesia system having an inhalation conduit and an exhalation conduit joined via a Y-connector to a common duct that includes means for connecting with a patient, wherein the improvement comprises: an anesthesia gas filter in the common duct having a filtration efficiency in excess of 95%, said

A anesthesia system having an inhalation conduit and an exhalation conduit joined via a Y-connector to a common duct that includes means for connecting with a patient, wherein the improvement comprises: an anesthesia gas filter in the common duct having a filtration efficiency in excess of 95%, said filter comprising a housing body having an internal volume of 50 cc or less; a pleated hydrophobic filter element sealed in said housing body having a pressure drop of less than 0.3 inch of water at gas flow rates up to 12.5 L gas/minute; and connectors, for attaching said filter between the Y-connector and the common duct, attached at opposite ends of said housing body to form a passage through which respiratory gas can be driven through said filter by normal breathing of the patient.