US 11,679,020 B2
Perforated chamber ostomy wafers, ostomy devices including the same, and methods of applying ostomy wafers and ostomy devices
Emily Donovan, Deeside (GB); Garry Storey, Deeside (GB); Wayne Bonnefin, Deeside (GB); Roxanna Woodward, Deeside (GB); Stephen Desmond, Deeside (GB); Lisa Price, Deeside (GB); Clive Wilson, Deeside (GB); and James Glover, Deeside (GB)
Assigned to ConvaTec Technologies, Inc., Las Vegas, NV (US)
Filed by CONVATEC TECHNOLOGIES INC., Las Vegas, NV (US)
Filed on Apr. 27, 2020, as Appl. No. 16/859,506.
Claims priority of provisional application 62/838,899, filed on Apr. 25, 2019.
Prior Publication US 2020/0337879 A1, Oct. 29, 2020
Int. Cl. A61F 5/443 (2006.01); A61F 5/445 (2006.01); A61F 5/44 (2006.01)
CPC A61F 5/443 (2013.01) [A61F 5/445 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An ostomy wafer comprising:
an external layer including a stoma channel to permit the passage of effluent therethrough, wherein the stoma channel extends in an axial direction, wherein the external layer includes an annular base and a pedestal extending outwardly therefrom in the axial direction, and wherein the pedestal at least partially defines the stoma channel; and
a convex layer coupled to the external layer such that the stoma channel extends therethrough, wherein the convex layer is formed to include a plurality of perforations that are spaced in a radial direction from the stoma channel and at least one chamber that is in fluid communication with the plurality of perforations and spaced from the stoma channel in the radial direction,
wherein the external layer at least partially closes off the at least one chamber to confine viscous media that may be stored in the at least one chamber and distributed through the plurality of perforations to couple the ostomy wafer to a subject in use thereof.