US 12,357,499 B2
Ostomy appliance
Kieran Williams, Birmingham (GB); Lee Tretheway, Birmingham (GB); Iain Powner, Birmingham (GB); Jesus Alfaro, Birmingham (GB); and Marcus Allen, Birmingham (GB)
Assigned to SALTS HEALTHCARE LIMITED, Birmingham (GB)
Filed by Salts Healthcare Limited, Birmingham (GB)
Filed on Aug. 22, 2023, as Appl. No. 18/453,607.
Application 18/453,607 is a continuation of application No. 16/649,070, granted, now 11,737,908, previously published as PCT/GB2018/052688, filed on Sep. 21, 2018.
Claims priority of application No. 1715388 (GB), filed on Sep. 22, 2017.
Prior Publication US 2023/0390099 A1, Dec. 7, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 5/448 (2006.01); A61F 5/441 (2006.01); A61F 5/445 (2006.01)
CPC A61F 5/448 (2013.01) [A61F 5/441 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An ostomy appliance comprising:
first and second walls connected to each other at or near their peripheries, the first wall having a stoma-receiving opening;
a connection member connected to the first wall for attaching the appliance to a user;
an aperture located in either of the first and/or second walls for permitting waste gases to exit the appliance;
a multi-layer filter positioned adjacent and covering the aperture on an exterior surface of the respective first and/or second wall,
wherein a layer of the filter is hydrophobic and wherein said hydrophobic layer is positioned directly adjacent and in contact with the respective first and/or second wall,
wherein the hydrophobic layer has an interior first side and an opposite second side and wherein the first side is welded directly to an exterior surface of the respective first and/or second wall, said weld between the interior surface of the first side of the hydrophobic layer and the exterior surface of said respective first and/or second wall holding the multi-layer filter relative to the wall.