US4712553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sutures having a porous surface
Assignee: Corvita Corp
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Filing: 1985-05-30
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Granted: 1987-12-15
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Expires: 2005-05-30
Abstract
Abstract Surgical sutures are provided that have a surface which has a porous structure. The porous structure can be formed from a plurality of fibers that are wound onto an elongated central core of the suture, or from a mixture including elutable particles that is cast into the configuration of a suture, either as a generally unitary cylinder or over an elongated central core of the suture.
Inventors
- 👤 David C. MacGregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:09
CPC Classifications
A; A61; A61L; A61L17/00; A61L17/14; A61L17/145; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
141 words
A non-braided surgical suture, comprising: a suture material including: a flexible, non-metallic elongated central core member having an outside diameter that is less than that of the non-braided surgical suture; a generally cylindrical porous elongated flexible, non-metallic portion that has an inside diameter which is substantially the same as said central core member outside diameter and that has an outside diameter that is no larger than that of a surgical suture, said generally cylindrical porous elongated flexible portion closely overlying said elongated central core member, and said generally cylindrical porous elongated flexible portion having a porous surface that promotes tissue ingrowth into said porous elongated flexible portion; and said generally cylindrical elongated flexible portion includes a spun filament that is wound onto the elongated central core member into multiple layers that cross each other in order to form said porous surface.
Claim 2
Dependent Claim
141 words
A non-braided surgical suture, comprising: a suture material including: a flexible, non-metallic elongated central core member having an outside diameter that is less than that of the non-braided surgical suture; a generally cylindrical porous elongated flexible, non-metallic portion that has an inside diameter which is substantially the same as said central core member outside diameter and that has an outside diameter that is no larger than that of a surgical suture, said generally cylindrical porous elongated flexible portion closely overlying said elongated central core member, and said generally cylindrical porous elongated flexible portion having a porous surface that promotes tissue ingrowth into said porous elongated flexible portion; and said generally cylindrical elongated flexible portion includes a spun filament that is wound onto the elongated central core member into multiple layers that cross each other in order to form said porous surface.
Claim 3
Dependent Claim
28 words
The non-braided surgical suture according to claim 1, wherein said generally cylindrical porous elongated flexible coating is a polymeric sheath that is secured to the central core member.
Claim 4
Dependent Claim
28 words
The non-braided surgical suture according to claim 1, wherein the flexible elongated central core member is a single-strand polymeric extrudate of said filament spun into said multiple layers.
Claim 5
Dependent Claim
28 words
The non-braided surgical suture according to claim 1, wherein the flexible elongated central core member is a multiple-strand polymeric extrudate of said filament spun into said multiple layers.
Claim 6
Dependent Claim
40 words
The non-braided surgical suture according to claim 1, wherein said generally cylindrical porous elongated flexible portion includes a plurality of fibers of said spun filament that are wound onto said flexible elongated central core member to form said multiple layers.
Claim 7
Dependent Claim
38 words
The non-braided surgical suture according to claim 1, wherein said generally cylindrical porous elongated flexible portion includes a plurality of fibers of said spun filament that are wound onto the elongated central core member into said multiple layers.
Claim 8
Dependent Claim
37 words
The non-braided surgical suture according to claim 1, wherein said generally cylindrical elongated flexible portion is a porous sheath that includes a plurality of said multiple layers of spun filament that are heat bonded to each other.
Claim 9
Dependent Claim
37 words
The non-braided surgical suture according to claim 1, wherein said generally cylindrical elongated flexible portion is a porous sheath that includes a plurality of said multiple layers of spun filament that are solvent bonded to each other.
Claim 10
Dependent Claim
24 words
The non-braided surgical suture according to claim 1, further including a needle member attached to a radially compressed end portion of said suture material.
Claim 11
Dependent Claim
35 words
The non-braided surgical suture according to claim 10, wherein said needle member has an outside diameter that is smaller than said outside diameter of said generally cylindrical porous elongated flexible portion that is radially uncompressed.
Claim 12
Dependent Claim
33 words
The non-braided surgical suture according to claim 1, wherein said outside diameter of said generally cylindrical porous elongated flexible portion has a diameter of between about 0.001 and about 0.6 mm and above.
Claim 13
Dependent Claim
27 words
The non-braided surgical suture according to claim 1, wherein said porous surface has a pore size of on the order of about 0.005 and about 0.06 mm.
Claim 14
Dependent Claim
19 words
The non-braided surgical suture according to claim 1, wherein said suture material is made of polymers that are polyurethanes.
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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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |