Flush-interval indicator for soluble pouches

Details Flush-interval indicator for soluble pouches Flush-interval indicator for soluble pouches

1995-01-12

1996-11-26

Weiss, John G.

Surgery

Means and methods for collecting body fluids or waste material

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

604361, 2064591, A61M 100

Patent

active

055780237

ABSTRACT:
A flush-interval indicator for soluble, toilet bowl discardable pouches is disclosed for indicating to a user, once the pouch is discarded in a toilet bowl, when a sufficient flush-interval has elapsed so that, when the toilet is then flushed, the pouch will quickly disintegrate without obstructing or impeding the flow of water and waste material through the discharge lines of the system. The flush-interval indicator comprises optically-distinguishable indicia printed or otherwise affixed to a display surface of a pouch and normally concealed by a water-soluble opaque layer. The opaque layer may take the form of an external panel secured to the pouch, or a water-soluble layer of the pouch itself which includes pigment to render it opaque and shield the indicator from view. In an alternate construction, a water-soluble external cover is secured to the pouch and fibers from the cover are heat sealed into the pouch's display surface to form a flush indicator that is relatively unreadable when the cover is dry. However, when the pouch is exposed to water, the cover dissolves or disperses, after a sufficient flush-interval has elapsed, to reveal the flush indicator formed from the embedded fibers.

REFERENCES:
patent: 3209977 (1965-10-01), Lewis et al.
patent: 4522738 (1985-06-01), Magid et al.
patent: 4998666 (1991-03-01), Ewan
patent: 5064664 (1991-11-01), Hustad
patent: 5403299 (1995-04-01), Schneider

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