Valved bag and method of making same

Details Valved bag and method of making same Valved bag and method of making same

1992-12-24

1995-04-25

Green, Randall L.

Surgery

Means and methods for collecting body fluids or waste material

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

604350, 604351, 604352, 604353, 604327, 604322, 604323, 604317, 128760, 128767, 128DIG24, A61F 544

Patent

active

054094747

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

This invention relates to a valved bag and to a method of making same, the bag being useful particularly, but not solely, as an incontinence bag.
It is known to construct valved incontinence and waste bags or pouches from polythene, waterproof paper and the like, in which a gusseted length of material is cut-off at prescribed intervals, the edges of the cut-off pieces being welded or adhered together to form a bag-within-a-bag, and small holes being made in the base of the gusset to allow urine or other liquid poured into the gusset to pass into the body of the bag. The sides of the gusset are pressed by the liquid against the sides of the bag, preventing the liquid escaping through the entry holes and so providing an effective valve. The top opening of the bag has to be wide enough for easy application to the penis but as no means for closing the top of the bag is provided, the urine can overflow if it has not drained quickly enough into the main body of the bag through the holes in the base of the gusset.


SUMMARY OF THE INVENTION

In accordance with this invention there is provided a waterproof, valved bag formed from two opposed layers of material forming opposed walls of the bag and joined together on three edges to form the side edges and the base of the bag, the bag incorporating valve means comprising a gusset or a tapered tube directed inward from an open top of the bag, the gusset having side edges joined to the side edges of the bag, the tapered tube having its wider end open and joined to the opposed walls of the bag by the edges of the opening at the top of the bag, with at least one opening in the base of the gusset or narrower end of the tapered tube to allow liquid to enter the body of the bag but preventing escape of the liquid irrespective of the orientation of the bag, and the bag further comprising an elongate web of self-adhesive coated material having a projects tag and protected by a release-coated web, the webs being aligned with and covering the open top edge of the bag by part of their width and being joined to the side edges of the bag but having one end formed with a line of weakness for tearing loose from the corresponding side edge of the bag.
The various joins may be effected by bonding (e.g. by welding or adhesive), or in some cases the join may comprise a fold in a common piece of material, as will be apparent from the description which follows.
Using for example sheet plastics such as polythene, the bag may be made from a web which is formed with a gusset, the gusset being sealed into the body of the bag by cross-weldings which form the side edges of the bag. Small openings made in the base of the gusset provide access for liquid from the gusset to the interior of the main body of the bag.
Alternatively, the bag may be made with a tapered tube insert instead of the gusset. The bag may then have two opposed sheets to form the two walls of the bag welded together on three sides. With the narrower end of the tapered tube within the bag, the wider opening of the tube is welded to the edges of the top opening of the bag. A shim, e.g. of PTFE, is inserted into the wider, open end of the tube during welding to keep this end free.
In use the bag, when the liquid has passed into the main body of the bag, cannot escape or pour out because the liquid presses the gusset or tube against the wall of the bag.
The elongate web of material, with a coating of medically-acceptable self-adhesive, is protected by another web coated with a release agent, and is aligned with and covers the top edge of the bag preferably by approximately half the width of the adhesive coating. A narrow strip on the outer edge of the web is left uncoated, in embodiments of the invention to be described herein, and a portion of this strip is punched out to leave the tag. With the uncoated side of the web facing the bag, enabling it to be welded, it is secured to each side edge of the bag by the side edge welding which form the bag. Preferably the tag is positioned adjacent one of these

REFERENCES:
patent: 2937645 (1960-05-01), Sachs
patent: 3346883 (1967-10-01), Ersek
patent: 3403410 (1968-10-01), Benzel et al.
patent: 3651810 (1969-11-01), Ormerod
patent: 3797734 (1974-03-01), Fleury et al.
patent: 4790834 (1988-12-01), Austin

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