US4496357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin barrier composition
Assignee: Hollister Inc
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Filing: 1981-06-10
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Granted: 1985-01-29
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Expires: 2001-06-10
Abstract
Abstract A skin barrier composition is provided which is moisture-absorbing while being resistant to urine and other body fluids and substantially non-swelling. It is composed of a continuous elastomer phase containing particulate hydrocolloid together with fumed silica. The hydrocolloid provides the water-absorbency while the fumed silica controls the swelling. The composition is adapted for ostomy and wound drainage applications, and has especially desirable properties for urostomy and ileostomy use where corrosive drainage is encountered.
Inventors
- 👤 Frank G. Osburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:26
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/001; A61L24/0031; A61L24/04; A61L24/043; A61L28/00; A61L28/0003; A61L28/0007; A61L28/0026; A61L2400/00; A61L2400/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate hydrocolloid together with fumed silica, said composition containing on a weight percent basis from 50 to 90% of the polyisobutylene phase, from 10 to 35% hydrocolloid, and from 1 to 10% fumed silica, at least 3 parts by weight of said polyisobutylene phase being present per part of said hydrocolloid.
Claim 2
Dependent Claim
79 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate hydrocolloid together with fumed silica, said composition containing on a weight percent basis from 50 to 90% of the polyisobutylene phase, from 10 to 35% hydrocolloid, and from 1 to 10% fumed silica, at least 3 parts by weight of said polyisobutylene phase being present per part of said hydrocolloid.
Claim 3
Dependent Claim
17 words
The composition of claim 1 in which said hydrocolloid consists of one or more natural hydrocolloid gums.
Claim 4
Dependent Claim
22 words
The compositions of claim 1 or claim 2 in which said compositions contained from 2 to 8% by weight of fumed silica.
Claim 5
Dependent Claim
62 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate hydrocolloid together with fumed silica, said composition containing on a weight percent basis from 70 to 85% of the polyisobutylene phase, from 10 to 25% hydrocolloid, and from 1 to 10% fumed silica.
Claim 6
Dependent Claim
62 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate hydrocolloid together with fumed silica, said composition containing on a weight percent basis from 70 to 85% of the polyisobutylene phase, from 10 to 25% hydrocolloid, and from 1 to 10% fumed silica.
Claim 7
Dependent Claim
62 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate hydrocolloid together with fumed silica, said composition containing on a weight percent basis from 70 to 85% of the polyisobutylene phase, from 10 to 25% hydrocolloid, and from 2 to 8% fumed silica.
Claim 8
Dependent Claim
62 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate hydrocolloid together with fumed silica, said composition containing on a weight percent basis from 70 to 85% of the polyisobutylene phase, from 10 to 25% hydrocolloid, and from 2 to 8% fumed silica.
Claim 9
Dependent Claim
66 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate natural hydrocolloid gum together with fumed silica, said composition containing on a weight percent basis from 70 to 85% of polyisobutylene, from 15 to 25% of natural hydrocolloid gum, and from 2 to 8% of fumed silica.
Claim 10
Dependent Claim
66 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate natural hydrocolloid gum together with fumed silica, said composition containing on a weight percent basis from 70 to 85% of polyisobutylene, from 15 to 25% of natural hydrocolloid gum, and from 2 to 8% of fumed silica.
Claim 11
Dependent Claim
28 words
The composition of claim 6 in which said natural hydrocolloid gum is selected from the class consisting of gelatin, pectin, guar, ghatti, karaya, and xanthan, and mixtures thereof.
Claim 12
Dependent Claim
55 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate gelatin and pectin together with fumed silica, said composition containing approximately on a weight percent basis 75% polyisobutylene, 12% gelatin, 8% pectin, and 5% fumed silica.
Claim 13
Dependent Claim
55 words
A skin barrier composition in the form of integral rings or blankets for application around a stoma composed substantially entirely of a continuous polyisobutylene phase having dispersed therein particulate gelatin and pectin together with fumed silica, said composition containing approximately on a weight percent basis 75% polyisobutylene, 12% gelatin, 8% pectin, and 5% fumed silica.
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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) | 1988-01-29 | 1988-07-30 | 1989-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-29 | 1992-07-30 | 1993-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-29 | 1996-07-30 | 1997-01-29 | $7700.00 | Window Closed / Lapsed |