Patent ID: 11925573
Assignee: DONALDSON COMPANY, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 16:
17. An ostomy filter and an ostomy bag comprising:
an ostomy bag defining a stoma opening and a vent opening; and
an ostomy filter attached to the ostomy bag to cover the vent opening, the ostomy filter comprising:
a bag side and a side opposite from the bag side, wherein the bag side of the ostomy filter is secured to the ostomy bag;
a first layer which is gas permeable and liquid impermeable; and
an adsorbent layer of adsorbent particles;
wherein the bag side of the ostomy filter comprises:

an adhesive zone in which adhesive is present, the adhesive zone having an outer adhesive perimeter and an inner adhesive perimeter, wherein the inner adhesive perimeter surrounds an exit opening, wherein the adhesive attaches the ostomy filter and the ostomy bag at the adhesive zone; and
a weld area adjacent to at least a portion of the adhesive zone, where the filter assembly is heat-sealable to the ostomy bag at the weld area, wherein the ostomy filter is attached by heat seal to the ostomy bag at the weld area.