Vented ostomy pouch with protected gas filter
First Claim
1. An ostomy pouch having upper and lower ends and comprising first and second walls of thermoplastic film sealed to each other along their outer edges;
- said first wall having a stoma-receiving opening and being externally provided with attachment means extending about said opening for securing said pouch to a wearer;
said second wall being provided with a gas outlet opening and having a deodorizing gas filter secured thereto over said outlet opening for deodorizing gases passing therethrough;
a third wall of thermoplastic film interposed between said first and second walls and having outer edges heat sealed to said outer edges of said first and second walls for dividing said pouch into adjacent first and second chambers;
said third wall having at least one gas vent located above said stoma-receiving opening for the flow of gases from one chamber to the other;
wherein the improvement comprisesconnecting means joining said first and third walls together at a point of connection spaced below the upper end of said pouch and above said gas vent.
1 Assignment
0 Petitions
Accused Products
Abstract
Vented ostomy pouches are disclosed in which a first wall is securable to a patient'"'"'s peristomal skin surfaces and the obverse second wall is provided with an outlet opening for the escape of gases from the pouch. A deodorizing gas filter extends over the outlet and a third wall, or internal barrier wall, is located within the pouch and divides it into two chambers. The barrier wall operates to block the passage of solids and most liquids from the first chamber to the second but is provided with at least one vent that permits the flow of gases into the second chamber from the first. A filter-protecting panel in the second chamber directs such gases along a circuitous route as they travel from the vent to the outlet. A connection, preferably in the form of a spot weld, joins the barrier wall to the bodyside first wall of the pouch at about the elevation of the filter to prevent the barrier wall from blocking against other surfaces and obstructing the flow of gases through the vent and filter.
67 Citations
18 Claims
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1. An ostomy pouch having upper and lower ends and comprising first and second walls of thermoplastic film sealed to each other along their outer edges;
- said first wall having a stoma-receiving opening and being externally provided with attachment means extending about said opening for securing said pouch to a wearer;
said second wall being provided with a gas outlet opening and having a deodorizing gas filter secured thereto over said outlet opening for deodorizing gases passing therethrough;
a third wall of thermoplastic film interposed between said first and second walls and having outer edges heat sealed to said outer edges of said first and second walls for dividing said pouch into adjacent first and second chambers;
said third wall having at least one gas vent located above said stoma-receiving opening for the flow of gases from one chamber to the other;
wherein the improvement comprisesconnecting means joining said first and third walls together at a point of connection spaced below the upper end of said pouch and above said gas vent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- said first wall having a stoma-receiving opening and being externally provided with attachment means extending about said opening for securing said pouch to a wearer;
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10. An ostomy pouch having upper and lower ends and comprising first and second walls of thermoplastic film sealed to each other along their outer edges;
- said first wall having a stoma-receiving opening and being externally provided with attachment means extending about said opening for securing said pouch to a wearer;
said second wall being provided with a gas outlet opening and having a deodorizing gas filter secured thereto over said outlet opening for deodorizing gases passing therethrough;
a third wall of thermoplastic film interposed between said first and second walls and having outer edges heat sealed to said outer edges of said first and second walls for dividing said pouch into adjacent first and second chambers;
said third wall having gas venting means located above said stoma-receiving opening for the flow of gases from one chamber to the other;
wherein the improvement comprisesa filter-protecting panel of thermoplastic film located in the upper portion of said second chamber between said gas vent and said outlet opening and having side and top edges positioned between and heat sealed to said outer edges of said second and third walls;
said panel having a lower edge unsecured to said second and third walls; and
connecting means joining said first and third walls together at a point of connection spaced below the upper end of said pouch and located above said lower edge of said panel. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
- said first wall having a stoma-receiving opening and being externally provided with attachment means extending about said opening for securing said pouch to a wearer;
Specification