Sealing and attachment assembly for medical drainage pouch
US4213458A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | May 17, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2400/14
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 pa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.