Gas-venting filter assembly for collection device

Details Gas-venting filter assembly for collection device Gas-venting filter assembly for collection device

1978-12-11

1980-05-20

Michell, Robert W.

Surgery

Respiratory method or device

Ozone or ion generation

A61F 544

Patent

active

042034450

ABSTRACT:
A gas-venting filter assembly for a collection device such as a colostomy pouch includes an outwardly extending recess in a wall of the pouch which is bridged by a filter unit that is designed for the free flow of gas therethrough. Preferably, the pouch recess is provided with an aperture in the form of a slit which provides suitable venting in normal use. Pressure build-up within the collection device resulting in ballooning of the device and/or discomfort to the wearer is avoided while at the same time protecting the filter assembly in use, and also facilitating leakage testing during manufacturing.

REFERENCES:
patent: 3439677 (1969-04-01), Bonfils
patent: 3439679 (1969-04-01), Doolittle
patent: 3575170 (1971-04-01), Clark
patent: 3759260 (1973-09-01), Nolan et al.
patent: 3804091 (1974-04-01), Nolan et al.
patent: 3865109 (1975-02-01), Elmore et al.
patent: 3952727 (1976-04-01), Nolan
patent: 3998255 (1976-12-01), Mather et al.

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