US4935019A
Expired / Lapsed
US
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Radiopaque polymeric composition
Assignee: Systagenix Wound Management IP Co BV
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Filing: 1988-05-02
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Granted: 1990-06-19
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Expires: 2008-05-02
Abstract
Abstract A radiopaque, polymeric composition suitable for printing onto surgical fabrics to provide an X-ray detectable marker is obtained by dispersing a heavy metal salt such as barium sulfate in a liquid polymer carrier. The barium sulfate has an average particle size greater than about 5 microns and is present in an amount of from about 15 to 90% by weight of total solids of said composition.
Inventors
- 👤 Stephen Papp, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:19
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/18; A61L31/00; A61L31/14; A61L31/18; A61B; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
A radiopaque, polymeric composition comprising a fluid polymeric emulsion and from about 15 to 90% by weight of solids of a heavy metal radiopaque salt having an average particle size of more than about 5 microns, said radiopaque composition having a Brookfield viscosity of less than about 20,000 cps at room temperature whereby by said composition is suitable for printing onto a fabric surface by gravure or screen printing.
Claim 2
Dependent Claim
69 words
A radiopaque, polymeric composition comprising a fluid polymeric emulsion and from about 15 to 90% by weight of solids of a heavy metal radiopaque salt having an average particle size of more than about 5 microns, said radiopaque composition having a Brookfield viscosity of less than about 20,000 cps at room temperature whereby by said composition is suitable for printing onto a fabric surface by gravure or screen printing.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein said heavy metal radiopaque salt is barium sulfate.
Claim 4
Dependent Claim
28 words
The composition of claim 2 wherein said barium sulfate has an average particle size of about 10 microns with 75% of the particles being 5 microns or greater.
Claim 5
Dependent Claim
22 words
The composition of claim 3 wherein said barium sulfate comprises from about 60 to 90% by weight of solids of said composition.
Claim 6
Dependent Claim
15 words
The composition of claim 4 wherein said viscosity is from about 2,000 to 20,000 cps.
Claim 7
Dependent Claim
16 words
The composition of claim 1 wherein said liquid polymeric emulsion is an aqueous acrylic latex emulsion.
Claim 8
Dependent Claim
14 words
The composition of claim 6 wherein said acrylic latex comprises a vinyl acetate/acrylic copolymer.
Claim 9
Dependent Claim
14 words
The composition of claim 1 wherein said liquid polymeric emulsion is a PVC plastisol.
Claim 10
Dependent Claim
68 words
A radiopaque, polymeric composition comprising an aqueous emulsion of an acrylic latex carrier and from about 15 to 90% by weight of solids of a heavy metal radiopaque salt having an average particle size greater than about 5 microns, said radiopaque composition having a Brookfield viscosity of less than about 20,000 cps whereby said composition is suitable for printing onto a fabric surface by gravure or screen printing.
Claim 11
Dependent Claim
68 words
A radiopaque, polymeric composition comprising an aqueous emulsion of an acrylic latex carrier and from about 15 to 90% by weight of solids of a heavy metal radiopaque salt having an average particle size greater than about 5 microns, said radiopaque composition having a Brookfield viscosity of less than about 20,000 cps whereby said composition is suitable for printing onto a fabric surface by gravure or screen printing.
Claim 12
Dependent Claim
14 words
The composition of claim 9 wherein said heavy metal radiopaque salt is barium sulfate.
Claim 13
Dependent Claim
28 words
The composition of claim 10 wherein said barium sulfate has an average particle size of about 10 microns with 75% of said particles being 5 microns or greater.
Claim 14
Dependent Claim
21 words
The composition of claim 11 wherein said barium sulfate comprises from 60 to 90% by weight of solids of said composition.
Claim 15
Dependent Claim
67 words
A radiopaque, polymeric composition comprising an aqueous emulsion of an plastisol carrier and from about 15 to 90% by weight of solids of a heavy metal radiopaque salt having an average particle size greater than about 5 microns, said radiopaque composition having a Brookfield viscosity of less than about 20,000 cps whereby said composition is suitable for printing onto a fabric surface by gravure or screen printing.
Claim 16
Dependent Claim
67 words
A radiopaque, polymeric composition comprising an aqueous emulsion of an plastisol carrier and from about 15 to 90% by weight of solids of a heavy metal radiopaque salt having an average particle size greater than about 5 microns, said radiopaque composition having a Brookfield viscosity of less than about 20,000 cps whereby said composition is suitable for printing onto a fabric surface by gravure or screen printing.
Claim 17
Dependent Claim
14 words
The composition of claim 13 wherein said heavy metal radiopaque salt is barium sulfate.
Claim 18
Dependent Claim
28 words
The composition of claim 14 wherein said barium sulfide has an average particle size of about 10 microns with 75% of said particles being 5 microns or greater.
Claim 19
Dependent Claim
21 words
The composition of claim 15 wherein said barium sulfate comprises from 60 to 90% by weight of solids of said composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |