Patent ID: 11890218
Assignee: CONVATEC TECHNOLOGIES INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 4:
5. An ostomy appliance comprising:
a front panel and a rear panel, at least partly sealed to one another along their peripheries, said front and rear panels forming a pouch, the rear panel having a stomal opening for positioning around a stoma so that body waste excreted through the stoma is captured in said pouch;
a filter for deodorization of odorous gas from the body waste, said filter located on the front panel and said filter comprising an opening for emitting said deodorized gas to the atmosphere; and
a center panel between the front and rear panels which at least partly covers said filter, the center panel having a bottom edge that is positioned above the bottom edges of the front and rear panels and is attached to the front and rear panels along the periphery of the pouch, the center panel and front panel being attached by at least one weld located on the bottom edge of the center panel;
wherein the center panel comprises a plurality of protrusions that project towards the front panel; and
wherein the plurality of protrusions comprises a first protrusion projecting toward the front panel and having a first geometry; and
wherein the plurality of protrusions comprises a second protrusion projecting toward the front panel and having a second geometry different from the first geometry.