A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
128/105
A61B 19/00 (2006.01) A61F 5/441 (2006.01)
Patent
CA 2035264
An ostomy bag having a stomal aperture to receive a stoma in one wall of the bag and a gas venting aperture in the bag with a filter element covering the gas venting aperture, the bag including an intervening membrane disposed between the front rear walls of the bag and between the stomal aperture and the gas venting aperture. The intervening membrane is liquid impermeable and gas permeable and supports an adequate flow rate of gas for ostomy bag applications. The intervening membrane preferably comprises a polytetrafloroethylene, microporous semi-permeable membrane laminated to a thermoplastic film layer which is heat sealable to the walls of the bag.
Castellana Frank S.
Torgalkar Anil M.
Castellana Frank S.
Convatec Technologies Inc.
Osler Hoskin & Harcourt Llp
Torgalkar Anil M.
LandOfFree
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