Patent US4639253A successfully refreshed from Google Patents.
US4639253A
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Nonwoven surgical sponge with X-ray detectable element
Assignee: Ethicon Inc
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Filing: 1985-11-25
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Granted: 1987-01-27
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Expires: 2005-11-25
Abstract
Abstract A surgical sponge constructed of a nonwoven fabric is provided with an integral X-ray detectable element in the form of a yarn or monofilament which is positioned interiorly of the nonwoven fabric and in the plane thereof. The fabric is produced by placing the X-ray detectable element between two fibrous webs and subjecting the composite material to hydraulic entanglement to produce a patterned, nonwoven fabric.
Inventors
- 👤 John Dyer
- 👤 John W. Kennette
- 👤 Alton H. Bassett
- 👤 Stanley D. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/44; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/425; D04H1/4258; D04H1/4282; D04H1/4291; D04H1/4326; D04H1/4334; D04H1/435; D04H1/4382; D04H1/43835; D04H1/44; D04H1/46; D04H1/492; D04H1/495; A61B; A61B90/00; A61B90/39
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
115 words
A surgical sponge including an integral X-ray detectable element, said sponge comprising a fibrous, nonwoven fabric consisting essentially of entangled fibers arranged in an interconnecting patterned relationship in the plane of the fabric, and at least one visually colored X-ray detectable element positioned interiorly of said fibrous nonwoven fabric in the plane thereof, the fibers of said nonwoven fabric being intertwined about said X-ray detectable element to provide a fibrous covering of said X-ray detectable element on a first surface of said fabric which is lighter than the fibrous covering on the other surface of said fabric, whereby said X-ray detectable element is more readily visible on said first surface than on said other surface.
Claim 2
Dependent Claim
115 words
A surgical sponge including an integral X-ray detectable element, said sponge comprising a fibrous, nonwoven fabric consisting essentially of entangled fibers arranged in an interconnecting patterned relationship in the plane of the fabric, and at least one visually colored X-ray detectable element positioned interiorly of said fibrous nonwoven fabric in the plane thereof, the fibers of said nonwoven fabric being intertwined about said X-ray detectable element to provide a fibrous covering of said X-ray detectable element on a first surface of said fabric which is lighter than the fibrous covering on the other surface of said fabric, whereby said X-ray detectable element is more readily visible on said first surface than on said other surface.
Claim 3
Dependent Claim
28 words
A sponge of claim 1 wherein said X-ray detectable element is a yarn and the fibers of said nonwoven fabric are intertwined with the fibers of said yarn.
Claim 4
Dependent Claim
24 words
A sponge of claim 2 wherein said yarn is a multi-ply, twisted yarn of viscose fibers containing from 40 to 45 percent barium sulfate.
Claim 5
Dependent Claim
23 words
A sponge of claim 1 wherein said X-ray detectable element is a monofilament comprising a thermoplastic polymeric material containing about 60% barium sulfate.
Claim 6
Dependent Claim
28 words
A sponge of claim 4 wherein said thermoplastic polymeric material is selected from the group consisting of polyisobutylene, polyvinyl chloride, and copolymers of vinyl acetate and vinyl chloride.
Claim 7
Dependent Claim
23 words
A sponge of claim 5 wherein the nonwoven fibers crossing over and under said monofilament are imbedded into the surface of said monofilament.
Claim 8
Dependent Claim
28 words
A sponge of claim 1 wherein said nonwoven fabric comprises fibrous material selected from the group consisting of cotton, rayon, cellulosics, acrylics, polyamides, polyesters, polyolefins, and blends thereof.
Claim 9
Dependent Claim
25 words
A sponge of claim 7 wherein said nonwoven fabric comprises a blend of about 70% by weight rayon and 30% by weight polyester staple fibers.
Claim 10
Dependent Claim
21 words
A sponge of claim 8 wherein said nonwoven fabric has a weight of from about 30 to 100 g/m 2 .
Claim 11
Dependent Claim
36 words
A sponge of claim 1 wherein the arrangement of said entangled fibers define a substantially rectangular pattern in said nonwoven fabric having from about 8 to 25 openings per inch in both machine and cross-machine directions.
Claim 12
Dependent Claim
131 words
A folded, surgical sponge including an integral X-ray detectable element, said sponge comprising a fibrous, nonwoven fabric consisting essentially of entangled fibers arranged in an interconnecting patterned relationship in the plane of the fabric, and at least one visually colored X-ray detectable element positioned interiorly of said fibrous nonwoven fabric in the plane thereof, the fibers of said nonwoven fabric being intertwined about said X-ray detectable element to provide a fibrous covering of said X-ray detectable element on a first surface of said fabric which is lighter than the fibrous covering on the other surface of said fabric, whereby said X-ray detectable element is more readily visible on said first surface than on said other surface, said fabric being folded to place said first surface to the outside of said sponge.
Claim 13
Dependent Claim
131 words
A folded, surgical sponge including an integral X-ray detectable element, said sponge comprising a fibrous, nonwoven fabric consisting essentially of entangled fibers arranged in an interconnecting patterned relationship in the plane of the fabric, and at least one visually colored X-ray detectable element positioned interiorly of said fibrous nonwoven fabric in the plane thereof, the fibers of said nonwoven fabric being intertwined about said X-ray detectable element to provide a fibrous covering of said X-ray detectable element on a first surface of said fabric which is lighter than the fibrous covering on the other surface of said fabric, whereby said X-ray detectable element is more readily visible on said first surface than on said other surface, said fabric being folded to place said first surface to the outside of said sponge.
Claim 14
Dependent Claim
15 words
A sponge of claim 11 wherein said X-ray detectable element is a yarn or monofilament.
Claim 15
Dependent Claim
16 words
A sponge of claim 11 wherein said X-ray detectable element is colored to contrast with blood.
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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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |