Ostomy pouch filter system
Ostomy appliances with a filter system that is resistant to clogging by waste expelled by the stoma are provided for waste management.
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.
2. The ostomy appliance of claim 1 , wherein the center panel and front panel are partly attached to one another.
3. 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.
4. The ostomy appliance of claim 3 , wherein the area that is substantially protrusion-free is positioned between the filter and the single weld.
5. The ostomy appliance of claim 1 , wherein the one or more protrusions project toward the front panel.
6. 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.
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.
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.
9. 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.
10. 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.
11. 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.
12. The ostomy appliance of claim 1 , wherein the front panel comprises one or more protrusions that project toward the center panel.
13. The ostomy appliance of claim 1 , wherein the one or more protrusions are half-spherical in shape.
14. The ostomy appliance of claim 1 , wherein the one or more protrusions are half-ovoidal in shape.
15. The ostomy appliance of claim 1 , wherein the one or more protrusions are polyhedral in shape.
16. The ostomy appliance of claim 1 , wherein the one or more protrusions form a labyrinth pattern.
17. The ostomy appliance of claim 15 , wherein the one or more protrusions are tetrahedral, pentahedral, or hexahedral in shape.
18. 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.
19. The ostomy appliance of claim 1 , wherein each of the one or more protrusions is one of at least two different shapes.
20. The ostomy appliance claim 1 , wherein each of the one or more protrusions is one of at least two different sizes.
21. The ostomy appliance of claim 1 , wherein the one or more protrusions are arranged in columns.
22. The ostomy appliance of claim 1 , wherein the one or more protrusions are arranged in rows.
23. The ostomy appliance of claim 1 , wherein the filter is a round filter or a strip filter.
24. The ostomy appliance of claim 1 , wherein the filter is a radial flow filter or an axial flow filter.
25. The ostomy appliance of claim 1 , wherein the one or more protrusions are made of the same material as the center panel.
26. The ostomy appliance of claim 1 , wherein the one or more protrusions are integrally formed with the center panel.
27. The ostomy appliance of claim 1 , wherein the pouch is drainable.
28. The ostomy appliance of claim 1 , wherein the pouch is closed.
29. 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.