Sealing and attachment assembly for medical drainage pouch

Details Sealing and attachment assembly for medical drainage pouch Sealing and attachment assembly for medical drainage pouch

1978-05-17

1980-07-22

Michell, Robert W.

Surgery

Respiratory method or device

Ozone or ion generation

A61F 544

Patent

active

042134587

ABSTRACT:
A medical drainage pouch is provided with a breathable microporous adhesive patch for attaching the pouch to the body of a patient. The pouch includes a moisture-impermeable plastic bag having a drainage opening. A plastic annular retainer ring may be secured to the bag around the drainage opening. The adhesive patch has a thin non-woven porous backing sheet which is relatively easy to tear, and the patch is attached to the bag by a flexible annular attaching ring. The attaching ring may comprise a first layer of plastic and a second layer of hot melt adhesive. The plastic layer of the attaching ring is heat-sealed to the retainer ring or to the bag around a generally circular area of attachment, and the adhesive patch is heat-sealed to the adhesive layer of the attaching ring around a generally circular area of attachment which extends radially outwardly beyond the first area of attachment. The outward extension of the attaching ring provides a flexible, shock-absorbing connection between the tearable adhesive patch and the retainer ring or bag, and forces which are exerted on the adhesive patch, e.g., by the weight of the bag, are directed linearly with respect to the adhesive patch so that the tendency of the patch to tear is minimized.

REFERENCES:
patent: 3039464 (1962-06-01), Galindo
patent: 3351061 (1967-11-01), Nolan
patent: 3618606 (1971-11-01), Brown et al.
patent: 3822704 (1974-07-01), Nolan
patent: 3897780 (1975-08-01), Trousil
patent: 3897781 (1975-08-01), Marsan
patent: 3902496 (1975-09-01), Eakin
patent: 3954105 (1976-05-01), Nordby et al.

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