Patient's airway adapter to withdraw a patient's gas samples for

Details Patient's airway adapter to withdraw a patient's gas samples for Patient's airway adapter to withdraw a patient's gas samples for

1984-10-24

1985-12-17

Doll, John

Surgery

Truss

Pad

12820714, A61B 500

Patent

active

045587086

ABSTRACT:
A patient's airway adapter is fitted into a patient's airway, which is a combined breathing air supply and exhaust gas fluid flow passageway. The housing of this patient's airway adapter connects directly to a standard tapered tracheostomy or endotracheal tube connection or standard tapered portions of other fittings, and in turn provides a standard tapered connection to a patient's airway. The main air and gas stream, respectively, going to and from a patient, continues to flow directly through the patient's airway adapter. Samples of the patient's gas are withdrawn through a smaller diameter sampling exhaust port in the housing. The sampled patient's gas, immediately upon leaving the main air and gas stream, passes from the interior of a hollow cylindrical hydrophobic liquid baffle, through the baffle, and then into the sampling cannula enroute to a monitor. This hydrophobic baffle is held in a sealed position within the surrounding housing. Any mucus, sputum, and/or condensed water is kept from entering the smaller diameter sampling exhaust port, and therefore from entering the sampling cannula, as it collects on the inside of a cylindrical hydrophobic liquid baffle. The hydrophobic baffle material is a hydrophobic, hollow cylindrical baffle, having an unobstructed internal diameter in all embodiments.

REFERENCES:
patent: 3330271 (1967-07-01), Hozier
patent: 3544273 (1970-12-01), McConnaughey
patent: 3631654 (1972-01-01), Riely
patent: 3667475 (1972-06-01), Venturelli et al.
patent: 3910261 (1975-10-01), Ragsdale et al.
patent: 4090513 (1978-05-01), Togawa
patent: 4298358 (1981-11-01), Ruschke
patent: 4327718 (1982-05-01), Cronenberg
patent: 4356012 (1982-10-01), Hofstetter
patent: 4393378 (1981-10-01), Klein
patent: 4406291 (1983-09-01), Schwesinger

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