US4578065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective sealing composition in molded form
Assignee: Hollister Inc
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Filing: 1985-04-19
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Granted: 1986-03-25
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Expires: 2005-04-19
Abstract
Abstract Protective sealing compositions in the form of molded rings or sheets, which comprise gelled mixtures of water-absorbing particulate hydrocolloid gum and non-toxic liquid polyhydroxy alcohol are provided with increased resistance to the drained fluid (viz. urine or intestinal fluids) by incorporating a small amount of fumed silica or colloidal silica gel. By controlling the amount of silica added appreciable reductions in the wet tack and/or dry tack of the composition can be avoided. The compositions can be used with ostomy, wound drainage and incontinence devices.
Inventors
- 👤 Wagdi W. Habib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:28
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/04; A61L24/043; A61L2400/00; A61L2400/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
A protective sealing composition in the form of a molded gelled ring, sheet, or the like, said composition comprising essentially a gelled mixture of gelable, water-absorbing, particulate hydrocolloid gum and a non-toxic liquid polyhydroxy alcohol, wherein the improvement comprises having dispersed in said composition an amount of colloidal silica gel within the range from 0.1 to 4.0% by weight, said amount of colloidal silica gel being effective to increase appreciably the mechanical endurance of said sealing composition when exposed to urine.
Claim 2
Dependent Claim
81 words
A protective sealing composition in the form of a molded gelled ring, sheet, or the like, said composition comprising essentially a gelled mixture of gelable, water-absorbing, particulate hydrocolloid gum and a non-toxic liquid polyhydroxy alcohol, wherein the improvement comprises having dispersed in said composition an amount of colloidal silica gel within the range from 0.1 to 4.0% by weight, said amount of colloidal silica gel being effective to increase appreciably the mechanical endurance of said sealing composition when exposed to urine.
Claim 3
Dependent Claim
22 words
The composition of claim 1 in which said colloidal silica gel is present in an amount from 0.1 to 1.5% by weight.
Claim 4
Dependent Claim
79 words
A protective sealing composition in the form of a molded gelled ring, sheet, or the like, said composition comprising essentially a gelled mixture of karaya gum powder and a non-toxic liquid polyhydroxy alcohol, wherein the improvement comprises having dispersed in said composition an amount of colloidal silica gel within the range from 0.1 to 4.0% by weight, said amount of colloidal silica gel being effective to increase appreciably the mechanical endurance of said sealing composition, when exposed to urine.
Claim 5
Dependent Claim
79 words
A protective sealing composition in the form of a molded gelled ring, sheet, or the like, said composition comprising essentially a gelled mixture of karaya gum powder and a non-toxic liquid polyhydroxy alcohol, wherein the improvement comprises having dispersed in said composition an amount of colloidal silica gel within the range from 0.1 to 4.0% by weight, said amount of colloidal silica gel being effective to increase appreciably the mechanical endurance of said sealing composition, when exposed to urine.
Claim 6
Dependent Claim
22 words
The composition of claim 3 in which said colloidal silica gel is present in an amount from 0.1 to 1.5% by weight.
Claim 7
Dependent Claim
24 words
The composition of claim 3 in which said alcohol is selected from the group consisting of glycerin and mixtures of glycerin and propylene glycol.
Claim 8
Dependent Claim
24 words
The composition of claim 4 in which said alcohol is selected from the group consisting of glycerin, and mixtures of glycerin and propylene glycol.
Claim 9
Dependent Claim
23 words
The composition of claim 6 wherein the improvement further comprises having from 2 to 15% by weight of sodium carboxymethylcellulose in said composition.
Claim 10
Dependent Claim
85 words
A protective sealing composition in the form of a molded gelled ring, sheet, or the like, said composition being composed essentially of a gelled mixture of karaya gum powder and glycerin, wherein the improvement comprises having dispersed in said composition an amount of from 0.1 to 1.5% by weight of colloidal silica gel together with 3 to 8% by weight of sodium carboxymethylcellulose, said amount of colloidal silica gel being effective to increase appreciably the mechanical endurance of said sealing composition when exposed to urine.
Claim 11
Dependent Claim
85 words
A protective sealing composition in the form of a molded gelled ring, sheet, or the like, said composition being composed essentially of a gelled mixture of karaya gum powder and glycerin, wherein the improvement comprises having dispersed in said composition an amount of from 0.1 to 1.5% by weight of colloidal silica gel together with 3 to 8% by weight of sodium carboxymethylcellulose, said amount of colloidal silica gel being effective to increase appreciably the mechanical endurance of said sealing composition when exposed to urine.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |