# US 10,478,329 B2 · Ostomy pouch filter system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,478,329 B2 - Document ID: US10478329B2 - Status: Granted - Kind: B2 - Application number: 15/306,043 - Filed: 2015-04-24 - Published: 2017-02-16 - Granted: 2019-11-19 - Earliest claimed: 2014-04-24 - Assignees: Convatec Technologies Inc. - Applicants: ConvaTec Technologies Inc. - Inventors: Gary Oberholtzer; Marc Lesko - Web page: https://patentgrep.com/patent/US10478329B2 ## CPC - A61F 5/441: having {venting or} deodorant means, e.g. filters {; having antiseptic means, e.g. bacterial barriers} - A61F 5/445: Colostomy, {ileostomy or urethrostomy} devices (A61F5/441, A61F5/442, A61F5/443 take precedence) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) ## Abstract Ostomy appliances with a filter system that is resistant to clogging by waste expelled by the stoma are provided for waste management. ## Claims ### Claim 1 An ostomy appliance comprising a. 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; b. 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 c. 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; wherein the center panel comprises an area comprising one or more protrusions and an area that is substantially protrusion-free, wherein a portion of the center panel is exposed through the stomal opening, and wherein the portion of the center panel exposed through the stomal opening is within the area that is substantially protrusion-free. ### Claim 2 (depends on 1) The ostomy appliance of claim 1, wherein the center panel and front panel are partly attached to one another. ### Claim 3 (depends on 1) The ostomy appliance of claim 1, wherein the center panel and front panel are attached by a single weld located on the center of the bottom edge of the center panel. ### Claim 4 (depends on 3) The ostomy appliance of claim 3, wherein the area that is substantially protrusion-free is positioned between the filter and the single weld. ### Claim 5 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions project toward the front panel. ### Claim 6 (depends on 1) The ostomy appliance of claim 1, wherein the center panel comprises one or more protrusions that project toward the front panel and the front panel comprises one or more protrusions that project toward the center panel. ### Claim 7 An ostomy appliance comprising a. 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; b. 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 c. 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 a single weld located on the center of the bottom edge of the center panel, wherein the single weld is shorter than the bottom edge of the center panel; wherein the center panel comprises one or more protrusions that project towards the front panel. ### Claim 8 An ostomy appliance comprising a. 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; b. 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 c. 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 a single weld located on the center of the bottom edge of the center panel; wherein the center panel comprises an area comprising one or more protrusions that project towards the front panel, and an area that is substantially protrusion-free, wherein the area that is substantially protrusion-free portion is positioned between the filter and the single weld. ### Claim 9 (depends on 1) The ostomy appliance of claim 1, wherein the center panel comprises one or more protrusions which cover at least 50% of the surface area of the center panel. ### Claim 10 (depends on 1) The ostomy appliance of claim 1, wherein the center panel comprises one or more protrusions which cover at least 66% of the surface area of the center panel. ### Claim 11 (depends on 1) The ostomy appliance of claim 1, wherein the center panel comprises one or more protrusions which cover the entire surface area of the center panel. ### Claim 12 (depends on 1) The ostomy appliance of claim 1, wherein the front panel comprises one or more protrusions that project toward the center panel. ### Claim 13 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions are half-spherical in shape. ### Claim 14 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions are half-ovoidal in shape. ### Claim 15 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions are polyhedral in shape. ### Claim 16 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions form a labyrinth pattern. ### Claim 17 (depends on 15) The ostomy appliance of claim 15, wherein the one or more protrusions are tetrahedral, pentahedral, or hexahedral in shape. ### Claim 18 (depends on 17) The ostomy appliance of claim 17, wherein the one or more protrusions have a top-face that is triangular, diamond-shaped, square-shaped, rectangular, pentagonal, hexagonal, heptagonal, or octagonal. ### Claim 19 (depends on 1) The ostomy appliance of claim 1, wherein each of the one or more protrusions is one of at least two different shapes. ### Claim 20 (depends on 1) The ostomy appliance claim 1, wherein each of the one or more protrusions is one of at least two different sizes. ### Claim 21 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions are arranged in columns. ### Claim 22 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions are arranged in rows. ### Claim 23 (depends on 1) The ostomy appliance of claim 1, wherein the filter is a round filter or a strip filter. ### Claim 24 (depends on 1) The ostomy appliance of claim 1, wherein the filter is a radial flow filter or an axial flow filter. ### Claim 25 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions are made of the same material as the center panel. ### Claim 26 (depends on 1) The ostomy appliance of claim 1, wherein the one or more protrusions are integrally formed with the center panel. ### Claim 27 (depends on 1) The ostomy appliance of claim 1, wherein the pouch is drainable. ### Claim 28 (depends on 1) The ostomy appliance of claim 1, wherein the pouch is closed. ### Claim 29 (depends on 1) The ostomy appliance of claim 1, wherein the center panel and front panel are attached by one or more additional welds located on the bottom edge of the center panel.