Abstract: The present invention relates to an in situ cleanable filter for an ostomy appliance comprising a pathway for leading gases to a vent in an ostomy bag and a protective element contained in said pathway to prevent solid or semi-liquid waste from blocking the pathway where a channel or compartment formed by liquid impermeable layer(s) is defining at least part of the pathway and at least a part of said compartment or channel contain a protective element of an open celled compressible material having a memory and having a pore size of at least 60 PPI, said protective element extending in the same direction as the gas flow within the channel or compartment, said channel or compartment having an opening providing access to the pathway from the interior of the bag, said pathway having another opening being connected to a vent in the ostomy bag, optionally via a deodorizing filter. The invention relates to an ostomy appliance comprising a filter as above and a method for emptying and cleaning the filter.

Abstract: An ostomy appliance of the kind comprising a collecting bag for waste material, at least one opening through which waste material may enter the collecting bag, at least one filter allowing gas to exit the collecting bag and at least one pressure sensitive gas permeable barrier-filter 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.

Abstract: The present invention relates to an in situ cleanable filter for an ostomy appliance comprising a pathway for leading gases to a vent in an ostomy bag and a protective element contained in said pathway to prevent solid or semi-liquid waste from blocking the pathway where a channel or compartment formed by liquid impermeable layer(s) is defining at least part of the pathway and at least a part of said compartment or channel contain a protective element of an open celled compressible material having a memory and having a pore size of at least 60 PPI, said protective element extending in the same direction as the gas flow within the channel or compartment, said channel or compartment having an opening providing access to the pathway from the interior of the bag, said pathway having another opening being connected to a vent in the ostomy bag, optionally via a deodorizing filter. The invention relates to an ostomy appliance comprising a filter as above and a method for emptying and cleaning the filter.