A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 5/441 (2006.01) C08J 9/24 (2006.01) C08L 27/18 (2006.01)
Patent
CA 2128882
An ostomy filter for colostomy and ileostomy bags is gas-permeable to allow venting, and liquid-impermeable to prevent leakage. It includes a hydrogen sulphide adsorbent to remove smells. The filter comprises 9 to 50 % by weight of particles of un- sintered granular polytetrafluoroethylene (PTFE), 30 to 82 % by weight of particles of comminuted sintered expanded porous PTFE, and 9 to 30 % by weight of particulate water-insoluble H2S adsorbent. The particles are fused together by baking at ele- vated temperature to form a gas-permeable liquid-impermeable network. The comminuted sintered expanded porous PTFE is preferably formed by comminuting uniaxially expanded PTFE fibre.
Allan Andrew Miller
Katsakoglou Akis
Gowling Lafleur Henderson Llp
W. L. Gore & Associates (uk) Ltd.
W.l. Gore & Associates (uk) Ltd.
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