| 摘要 |
An ostomy appliance (1) of the kind comprising a collecting bag for waste material, at least one opening (5) through which waste material may enter the collecting bag, at least one filter (10) allowing gas to exit the collecting bag and at least one pressure sensitive gas permeable barrier-filter (11) positioned between the at least one opening and the at least one filter, where the barrier-filter in its closed state blocks the passage of semi-solid waste and in its open state maintains an open passage for semi solid waste, where an increase in pressure inside the collecting bag passes a predefined first gas pressure limit triggering the transition of the barrier-filter from its closed state to its open state.
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