US 11,707,379 B2
Ostomy appliance
Marcus Hoggarth, London (GB); Oliver Poyntz, London (GB); Kimahni Emsley, London (GB); Daljinder Sanghera, London (GB); and Liberty Fearns, London (GB)
Assigned to ConvaTec Limited, Deeside (GB)
Filed by CONVATEC LIMITED, Deeside (GB)
Filed on Oct. 2, 2020, as Appl. No. 17/61,732.
Application 17/061,732 is a continuation of application No. PCT/GB2020/052416, filed on Oct. 2, 2020.
Claims priority of provisional application 62/911,144, filed on Oct. 4, 2019.
Claims priority of application No. 1914351 (GB), filed on Oct. 4, 2019; application No. 1914363 (GB), filed on Oct. 4, 2019; application No. 1914375 (GB), filed on Oct. 4, 2019; application No. 1914379 (GB), filed on Oct. 4, 2019; and application No. 1914380 (GB), filed on Oct. 4, 2019.
Prior Publication US 2021/0100678 A1, Apr. 8, 2021
Int. Cl. A61F 5/445 (2006.01); A61F 5/44 (2006.01)
CPC A61F 5/445 (2013.01) [A61F 5/4404 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An ostomy appliance comprising a main body portion comprising an inner wall and an outer wall of flexible sheet material joined together to define a cavity for containing a stomal output;
the inner wall comprising an inlet for receiving the stomal output into the cavity;
the ostomy appliance further comprises an outer comfort layer overlying at least a portion of the outer wall;
a separation wall located between the inner wall and the outer wall; and sealed together at an at least upper and side peripheral regions of the separation wall to at least the upper and side peripheral regions of the inner wall and to the outer wall to form a first chamber between the inner wall and separation wall and a second chamber between the separation wall and the outer wall, the separation wall further comprising a separation filter for filtering gases and/or liquids into the second chamber from solid matter contained in the stomal output as contained in the first chamber; and
a gas vent with a gas filter provided in an upper portion of the outer wall and configured to allow the gases to exit the ostomy appliance,
wherein the outer comfort layer comprises a first part and a second part which are joined to the outer wall so that the first part partially overlaps the second part in an overlap region, wherein the first part and the second part are separable from each other in the overlap region to form a window opening for viewing the cavity;
wherein the overlap region is angled obliquely to a horizontal direction when a lower apex is vertically downward relative to an upper apex of the ostomy appliance;
wherein the outer wall comprises one or more pleats which are configured to partially or fully unfold as the cavity receives the stomal output, the first part and the second part of the outer comfort layer being configured to slide over each other in the overlap region to accommodate expansion of the underlying outer wall;
wherein the separation filter comprises one or more pleats aligned with the one or more pleats of the outer wall; and
wherein the separation filter is configured to prevent at least stomal solids from passing from the first chamber, through the separation wall, into the second chamber, and contacting the gas filter.