US3971381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laparotomy sponge
Assignee: Professional Surgical Manufacturing Co
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Filing: 1975-02-19
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Granted: 1976-07-27
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Expires: 1995-02-19
Abstract
Abstract A laparotomy sponge is disclosed having a central ply of rayon and polypropylene sandwiched between two piles of gauze.
Inventors
- 👤 Robert T. Gibson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:14
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/225; A61F; A61F13/00; A61F13/01; A61F13/01008; A61F13/15; A61F13/20; A61L15/42; A61L15/425; A61L24/00; A61L24/001; A61L24/0036; A61L24/04; A61L24/043; A61F13/53; A61F13/534; A61F13/53409; A61F2013/00089; A61F2013/00314; A61F2013/00327
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
43 words
A laparotomy sponge comprising a filler consisting essentially of rayon and polypropylene fibers mixed together in a weight ratio of approximately 80% rayon and 20% polypropylene and shaped into a configuration having a waffled surface; and a foraminous cover secured about said filler.
Claim 2
Dependent Claim
43 words
A laparotomy sponge comprising a filler consisting essentially of rayon and polypropylene fibers mixed together in a weight ratio of approximately 80% rayon and 20% polypropylene and shaped into a configuration having a waffled surface; and a foraminous cover secured about said filler.
Claim 3
Dependent Claim
18 words
A laparotomy sponge in accordance with claim 1 wherein said rayon and polypropylene fibers are heat bonded together.
Claim 4
Dependent Claim
25 words
A laparotomy sponge in accordance with claim 1 wherein said filler has opposing surfaces, each having a waffled configuration of alternate raised and depressed areas.
Claim 5
Dependent Claim
17 words
A laparotomy sponge in accordance with claim 1 wherein said waffled configuration is of a diamond pattern.
Claim 6
Dependent Claim
20 words
A laparotomy sponge in accordance with claim 1 wherein said central ply comprises rayon fibers heat bonded to polypropylene fibers.
Claim 7
Dependent Claim
25 words
A laparotomy sponge in accordance with claim 1 wherein said filler is a central ply and has a weight of 45-55 grams per square yard.
References Cited (Backward Citations)
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Cited
US3053252A
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US2928389A
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US3434472A
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US3308488A
Cited
US3416526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |