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1. US5575279 - Dual-filtered rotary isolation valve for resusciation

Office
United States of America
Application Number 08587805
Application Date 02.01.1996
Publication Number 5575279
Publication Date 19.11.1996
Grant Number 5575279
Grant Date 19.11.1996
Publication Kind A
IPC
A61M 16/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
16Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
CPC
A61M 16/0048
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
16Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
0048Mouth-to-mouth respiration
A61M 16/1065
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
16Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
10Preparation of respiratory gases or vapours
105Filters
106in a path
1065in the expiratory path
A61M 16/107
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
16Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
10Preparation of respiratory gases or vapours
105Filters
106in a path
107in the inspiratory path
A61M 2205/7536
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
2205General characteristics of the apparatus
75with filters
7536allowing gas passage, but preventing liquid passage, e.g. liquophobic, hydrophobic, water-repellent membranes
Applicants Emergency Filtration Products, Inc.
Inventors Beplate Douglas K.
Agents Fehr Thompson E.
Title
(EN) Dual-filtered rotary isolation valve for resusciation
Abstract
(EN)

An isolation valve for the resuscitation of patients which has an upper housing and a lower housing that snap together, rotate with respect to one another, and utilize a flexible diaphragm which extends into the small space between the upper housing and the lower housing to assure the establishment of an air-tight seal between the upper housing and the lower housing. The upper housing begins with an upper tube that expands outward to create an upper chamber segment. The lower housing has a lower chamber segment, the wall of which lower chamber segment establishing the snap-fit with the wall of the upper chamber segment. The lower chamber segment is formed by the outward expansion of a lower tube. Breath exhaled by a care provider proceeds along the upper tube to the upper chamber segment where it must pass through an upper filter segment, a lower filter segment, and a space between the two that provides a volume to retain any moisture which evades the filter segments. The exhaled breath from the care provider then passes through a check valve that precludes exhaled breath from the patient from traveling to the care provider and then into the lower tube. Breath exhaled by the patient is exhausted to the atmosphere through one or more apertures in the bottom of the lower chamber segment after having passed through an exhalation filter.