Flushable pH-sensitive ostomy pouch containing its own pH-modifi

Details Flushable pH-sensitive ostomy pouch containing its own pH-modifi Flushable pH-sensitive ostomy pouch containing its own pH-modifi

1994-05-24

1995-05-23

Kruter, Jerome L.

Surgery

Means and methods for collecting body fluids or waste material

Receptacle attached to or inserted within body to receive...

A61F 544

Patent

active

054176778

ABSTRACT:
A flushable ostomy pouch having side walls composed of pH-sensitive material capable of dissolving when exposed to an aqueous fluid having a pH substantially above or below a neutral pH level, and containing a quantity of pH-modifying material to initiate dissolution of the pouch when it is discarded in the water of a toilet bowl, is disclosed. The pouch includes a pair of side walls and an external membrane that extends along at least one of the side walls to define a pocket adjacent to that side wall. A quantity of pH-modifying material is contained in the pocket which, when exposed to a generally pH-neutral fluid entering the pocket, is capable of changing the pH of the fluid in the pocket to a level above or below the neutral pH level. The external membrane is formed such that, when the pouch is discarded in a toilet bowl, it allows aqueous fluid to enter the pocket and contact or dissolve the pH-modifying material, thereby causing the fluid entering the pocket to attain a pH substantially above or below the neutral pH level and dissolve the pH-sensitive side wall adjacent to the membrane.

REFERENCES:
patent: 4543097 (1985-09-01), Polen
patent: 4762738 (1988-08-01), Keyes et al.
patent: 4826493 (1989-05-01), Martini et al.
patent: 5108382 (1992-04-01), Wright
patent: 5110390 (1992-05-01), Martini et al.

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