Patent US6093200A successfully refreshed from Google Patents.
US6093200A
Expired / Lapsed
US
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Composite bioabsorbable materials and surgical articles made therefrom
Assignee: United States Surgical Corp
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Filing: 1997-09-10
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Granted: 2000-07-25
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Expires: 2017-09-10
Abstract
Abstract Composite materials have a core portion formed from a biocompatible material and at least one shell portion of a biocompatible material joined to the core portion. In a preferred embodiment, the core portion is coextruded with the shell portion to form a composite filament or sheet. The composite materials may be used as sutures or formed into medical devices or surgical articles for implantation within a living organism.
Inventors
- 👤 Cheng-Kung Liu
- 👤 Ying Jiang
- 👤 Mark S. Roby
- 👤 Steven L. Bennett
- 👤 Richard P. Stevenson
- 👤 Jeffrey P. Pietrangeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:30
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/40; A61L27/44; A61L27/48; A61L15/00; A61L15/16; A61L15/22; A61L15/26; A61L17/00; A61L17/04; A61L17/06; A61L17/10; A61L17/12; A61L17/14; A61L17/145; A61L31/00; A61L31/12; A61L31/125; A61L31/129
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
61 words
A surgical needle-suture combination comprising: a surgical needle; a suture attached to said needle; the suture comprising a monofilament having a core portion formed from isotactic polypropylene, a shell portion formed from syndiotartic polypropylene, and a micro-shell layer including a mixture of isotactic and syndiotactic polypropylene joining the core to the shell at the interface between the core and shell portions.
Claim 2
Dependent Claim
61 words
A surgical needle-suture combination comprising: a surgical needle; a suture attached to said needle; the suture comprising a monofilament having a core portion formed from isotactic polypropylene, a shell portion formed from syndiotartic polypropylene, and a micro-shell layer including a mixture of isotactic and syndiotactic polypropylene joining the core to the shell at the interface between the core and shell portions.
Claim 3
Dependent Claim
24 words
A surgical needle-suture combination as in claim 1 wherein the core comprises between about 70 and about 95 percent by volume of the monofilament.
Claim 4
Dependent Claim
24 words
A surgical needle-suture combination as in claim 1 wherein the core comprises between about 80 and about 90 percent by volume of the monofilament.
Claim 5
Dependent Claim
92 words
A biocompatible composite implantable within a living organism comprising: a core portion formed from a first biocompatible, non-bioabsorbable polymeric material, a shell portion formed from a second biocompatible, non-bioabsorbable polymer material, wherein the first and second biocompatible polymeric materials are chemically distinct and are each selected from the group consisting of polyesters, polyamides, polyurethanes, polycarbonates, polyimides, fluoropolymers, polyolefins and vinyl polymers, and a micro-shell layer including a mixture of the first and second biocompatible, non-bioabsorbable polymer materials joining the core to the shell at the interface between the core and shell portions.
Claim 6
Dependent Claim
92 words
A biocompatible composite implantable within a living organism comprising: a core portion formed from a first biocompatible, non-bioabsorbable polymeric material, a shell portion formed from a second biocompatible, non-bioabsorbable polymer material, wherein the first and second biocompatible polymeric materials are chemically distinct and are each selected from the group consisting of polyesters, polyamides, polyurethanes, polycarbonates, polyimides, fluoropolymers, polyolefins and vinyl polymers, and a micro-shell layer including a mixture of the first and second biocompatible, non-bioabsorbable polymer materials joining the core to the shell at the interface between the core and shell portions.
Claim 7
Dependent Claim
15 words
A composite as in claim 4 wherein the core portion is made of a polyester.
Claim 8
Dependent Claim
15 words
A composite as in claim 5 wherein the shell portion is made of a polyurethane.
Claim 9
Dependent Claim
15 words
A composite as in claim 4 wherein the core portion is made of a polyamide.
Claim 10
Dependent Claim
28 words
A composite as in claim 7 wherein the core portion is made of a low order nylon and the shell portion is made of a high order nylon.
Claim 11
Dependent Claim
15 words
A composite as in claim 4 wherein the core portion is made of a polyolefin.
Claim 12
Dependent Claim
15 words
A composite as in claim 9 wherein the core portion is made of isotactic polypropylene.
Claim 13
Dependent Claim
15 words
A composite as in claim 10 wherein the shell portion is made of syndiotactic polypropylene.
Claim 14
Dependent Claim
12 words
A composite as in claim 4 in the form of a monofilament.
Claim 15
Dependent Claim
9 words
A suture formed from the filament of claim 12.
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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) | 2003-07-25 | 2004-01-24 | 2004-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-25 | 2008-01-24 | 2008-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-25 | 2012-01-24 | 2012-07-25 | $7700.00 | Window Closed / Lapsed |