Abstract: A drainage bag employs a non-return valve assembly including at least one baffle positioned between the top and bottom of the bag. Each baffle extends completely across the interior of the bag and includes an upper portion which is continuously attached to one face of the bag and a lower portion which is attached to an opposite face of the bag at spaced intervals so as to form at least one opening adapted to permit liquid to flow readily from the top of the bag to the bottom of the bag while inhibiting liquid from flowing from the bottom of the bag to the top of the bag.

Abstract: A liquid drainage system comprising, a receptacle having a chamber to receive liquid, and a depending annular wall in an upper portion of the receptacle. The system has a valve comprising a cup-shaped member of elastic material having a lower wall extending across the cup-shaped member, an upper annular wall extending from the lower wall, with an upper portion of the valve annular wall being snugly received on a lower portion of the receptacle wall, and a hinge member extending outwardly from the cup-shaped member at one side of the lower wall. The cup-shaped member has a slit extending through the cup-shaped member to the hinge member at a location slightly above the lower wall. The slit defines a valve seat above the lower wall with the lower wall serving as a valve element which may sealingly engage against the seat, with the hinge member connecting the lower wall and valve annular wall.

Abstract: A liquid drainage system comprising, a receptacle having a chamber to receive and collect the liquid. The system has a drip chamber having a vent with a bacteria filter covering the vent, and an annular wall having a lower edge defining a valve seat, with the seat being disposed at an acute angle relative to the horizontal when the receptacle is in an upright position. The system has an anti-reflux valve comprising a sheet of flexible material extending across the drip chamber such that the sheet is sufficiently large to engage against the seat peripherally around the drip chamber. The system has a device for retaining an upper portion of the valve against an upper portion of the seat, such that a lower portion of the valve flexes away from the seat when the receptacle is placed in an upright position, and the lower portion of the valve flexes against the seat when the receptacle is disposed in a horizontal position.

Abstract: A liquid drainage system comprising, a receptacle having a chamber to receive liquid, and a depending annular wall defining a valve seat at a lower portion thereof and an opening in the region of the seat. The system has a valve element comprising a sheet of flexible relatively stiff material being sufficiently large to extend across the opening and sealingly engage against the seat peripherally around the wall. The system has a device for retaining a central portion of the valve element adjacent the seat.

Abstract: A liquid drainage system comprising, a receptacle having a chamber to receive liquid, a depending annular wall defining a valve seat at a lower portion thereof and an opening in the region of the seat, and a retainer assembly extending across the opening and having an aperture extending therethrough in the opening. The system has a valve element of elastic material comprising a disc being sufficiently large to extend across the opening and sealingly engage against the seat peripherally around the wall. The valve element has a stem extending from the disc and being slidably received in the aperture. The stem has a boss spaced from the disc with dimensions larger than the aperture such that the boss maintains the stem in the aperture. The stem has a sufficient length between the boss and disc such that the disc is spaced from the seat when the boss engages against the retainer assembly.

Abstract: A drainage system for body fluids comprising, a receptacle having a collection chamber for retaining the body fluids, a container having a supply chamber for retaining a bactericide, and a holding chamber. The system has a first one-way valve member permitting the passage of bactericide from the supply chamber into the holding chamber, and preventing passage of the bactericide from the holding chamber into the supply chamber. The system has a second one-way valve member for permitting passage of the bactericide from the holding chamber into the collection chamber, and for preventing passage of the contents from the collection chamber into the holding chamber.

Abstract: A disposable discharge collector (10) for a stoma pouch (23) having a drain opening (32) therein includes a bag body (11) having flexible walls (14,15) and an opening (16) therein suitable to receive the drain opening (32) of the stoma pouch (23), a locking mechanism (12) adjacent the opening (16) for providing a liquid-tight closure of the bag body (11), and a wiper mechanism (13) in fixed, proximate spatial relation beneath the locking mechanism (12) and interior to bag body (11) for manually forcing substantially all discharge (24) in the stoma pouch (23) into bag body (11) without spillage, permitting the sanitary disposal of discharge (24).

Abstract: An ileostomy valve for controlling bowel continence. The valve includes drainage tube means having a flexible outer end portion and an inner end portion, securing means carried by the inner end portion for securing the latter to the stoma of a patient deep to the fascia, and means for releasably sealing the outer end portion of the drainage tube. The latter means comprises means carried by the drainage tube means for releasably retaining the outer end thereof in a collapsably folded position along its length to form a waterproof seal.