US4561858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ostomy bag with integral breathable gasket
Assignee: CR Bard Inc
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Filing: 1983-05-03
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Granted: 1985-12-31
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Expires: 2003-05-03
Abstract
Abstract A new ostomy bag having an integral breathable ostomy gasket derived from the non-aqueous reaction of a polyisocyanate and a polyoxyalkylene polyol moiety having a hydrophilic filler incorporated within the polyol moiety prior to the reaction of the polyisocyanate and the polyol. The bag includes hydrophobic material welded to the bag serving as a backing for the gasket.
Inventors
- 👤 Douglas Allen, Jr.
- 👤 Eric Flam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:53
CPC Classifications
A; A61; A61L; A61L28/00; A61L28/0007; A61L28/0015; A61F; A61F5/00; A61F5/44; A61F5/443; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/4009; C08G18/4063; C08G18/4081
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
An ostomy bag having a front face provided with a stoma opening therein, a backing of hydrophobic material welded to said front face surrounding said opening, and a skin barrier gasket on the exposed face of the backing, said skin barrier gasket being a polymeric composition comprising a product derived from the generally non-aqueous reaction of an organic polyisocyanate, and a polyoxyalkylene polyol moiety comprising a mixture of a major portion of polyol having a diol functionality and a minor portion of polyol of at least triol functionality, and having incorporated into the polyol moiety prior to the generally non-aqueous reaction of the polyisocyanate and the polyol moiety a hydrophilic filler wherein there is provided a polymeric matrix characterized by the physical encapsulation of the hydrophilic filler within the polymeric matrix.
Claim 2
Dependent Claim
131 words
An ostomy bag having a front face provided with a stoma opening therein, a backing of hydrophobic material welded to said front face surrounding said opening, and a skin barrier gasket on the exposed face of the backing, said skin barrier gasket being a polymeric composition comprising a product derived from the generally non-aqueous reaction of an organic polyisocyanate, and a polyoxyalkylene polyol moiety comprising a mixture of a major portion of polyol having a diol functionality and a minor portion of polyol of at least triol functionality, and having incorporated into the polyol moiety prior to the generally non-aqueous reaction of the polyisocyanate and the polyol moiety a hydrophilic filler wherein there is provided a polymeric matrix characterized by the physical encapsulation of the hydrophilic filler within the polymeric matrix.
Claim 3
Dependent Claim
17 words
An ostomy bag as defined in claim 1, wherein the hydrophobic backing is a fluid resistant material.
Claim 4
Dependent Claim
40 words
An ostomy bag as defined in claim 1 wherein said polyol consists of diols of nominal equivalent weights of 1500 and triols of nominal equivalent weights of 2000 in a ratio of approximately 4 to 1 of diol to triol.
Claim 5
Dependent Claim
36 words
An ostomy bag as defined in claim 1, wherein said polyisocyanate is a liquid ioscyanate based on 4,4' methyldiphenyldiisocyanate; said polyol is a mixture of 1500 equivalent weight polyether diol and 2000 equivalent weight polyether triol.
Claim 6
Dependent Claim
141 words
An ostomy bag as defined in claim 1, wherein the polymeric composition comprises a product derived from the generally non-aqueous reaction of an organic polyisocyanate of the formula R(NCO)n where R is selected from the group consisting of aliphatic, alicyclic, aliphatic-alicyclic, and aromatic or aliphaticaromatic hydrocarbon compounds and n is at least 2, and a polyoxyalkylene polyol moiety of the formula R(OH)n' where R is a polyoxyalkylene and n' is at least 2, the polyol moiety comprising a mixture of a major portion of polyol having a diol functionality and a minor portion of polyol of at least triol functionality, and having incorporated into the polyol moiety prior to the reaction of the polyisocyanate and the polyol moiety, a hydrophilic filler wherein there is provided a polymeric matrix characterized by the physical encapsulation of the hydrophilic filler within the polymeric matrix.
References Cited (Backward Citations)
US4011871A
Cited
US4153055A
Cited
US4078568A
Cited
US4258715A
Cited
US4253460A
Cited
US4393080A
Cited
US4497914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |