Patent US3977406A successfully refreshed from Google Patents.
US3977406A
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Medical sponges
Assignee: Wyeth Holdings LLC
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Filing: 1974-06-19
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Granted: 1976-08-31
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Expires: 1994-06-19
Abstract
Abstract Hydrophilic sponges adapted for medical uses comprising texturized polyurethane foams embossed with various fused designs.
Inventors
- 👤 Roy William Roth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:13
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B29C44/5636; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24504; Y10T428/24512
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A hydrophilic sponge, adapted for medical use, consisting essentially of a flexible, texturized, polyurethane foam sheet embossed with a fused design composed of a series of continuous, unbroken lines no more than about 1 inch apart, each end of each line terminating at an edge of the sheet and intersecting another line at least about every inch in each direction, the thickness of the area of said design being from about 25 to about 95 percent of the original thickness of said foam sheet, the remaining area being of the original thickness, substantially all of the reticulated cells at the surface of said sheet being broken.
Claim 2
Dependent Claim
106 words
A hydrophilic sponge, adapted for medical use, consisting essentially of a flexible, texturized, polyurethane foam sheet embossed with a fused design composed of a series of continuous, unbroken lines no more than about 1 inch apart, each end of each line terminating at an edge of the sheet and intersecting another line at least about every inch in each direction, the thickness of the area of said design being from about 25 to about 95 percent of the original thickness of said foam sheet, the remaining area being of the original thickness, substantially all of the reticulated cells at the surface of said sheet being broken.
Claim 3
Dependent Claim
12 words
A sponge according to claim 1 having a radiopaque material affixed thereto.
Claim 4
Dependent Claim
12 words
A sponge according to claim 1 having a retrieval means affixed thereto.
Claim 5
Dependent Claim
12 words
A sponge according to claim 1 having a magnetized material affixed thereto.
Claim 6
Dependent Claim
9 words
A sponge according to claim 1 which is sterile.
Claim 7
Dependent Claim
18 words
A medical sponge package comprising a sterile enclosure containing therein the sponge of claim 1 in sterile condition.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |