US5156619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flanged end-to-side vascular graft
Assignee: Boston Scientific Scimed Inc
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Filing: 1990-06-15
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Granted: 1992-10-20
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Expires: 2010-06-15
Abstract
Abstract A flanged end-to-side vascular graft having an integrally formed flange at at least one end with an opening disposed at a non-right angle to the straight portion of the graft. The upper portion of the flange is shaped to follow a smooth continuous curve and the crotch portion is substantially free of reinforcing stitches. The continuous curve and limited stitches provide a continuous uniform smooth suturing surface to facilitate attachment to a larger artery.
Inventors
- 👤 William K. Ehrenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:35
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
133 words
An end-to-side flanged woven or knitted tubular vascular graft, comprising: a substantially cylindrical first straight portion of a first diameter, said first straight portion having a longitudinal axis, and a flange portion integrally formed with the first straight portion, said flange portion defining a second tubular portion of a second diameter larger than the first diameter, said flange portion terminating at a periphery defined by a plane which forms an acute angle with said longitudinal axis; said flange having an upper arcuate region and a lower crotch region, said crotch defined by an angular junction between the first straight portion and said flange, wherein the crotch region along the periphery of said flange is substantially free of stitches so as to provide an even, continuous suturing surface about said periphery of said flange.
Claim 2
Dependent Claim
133 words
An end-to-side flanged woven or knitted tubular vascular graft, comprising: a substantially cylindrical first straight portion of a first diameter, said first straight portion having a longitudinal axis, and a flange portion integrally formed with the first straight portion, said flange portion defining a second tubular portion of a second diameter larger than the first diameter, said flange portion terminating at a periphery defined by a plane which forms an acute angle with said longitudinal axis; said flange having an upper arcuate region and a lower crotch region, said crotch defined by an angular junction between the first straight portion and said flange, wherein the crotch region along the periphery of said flange is substantially free of stitches so as to provide an even, continuous suturing surface about said periphery of said flange.
Claim 3
Dependent Claim
22 words
The prosthesis of claim 1, wherein the upper region of the flange opposite to the crotch region is a smooth continuous curve.
Claim 4
Dependent Claim
11 words
The prosthesis of claim 2, wherein the curve is substantially circular.
Claim 5
Dependent Claim
35 words
The prosthesis of claim 1, wherein the angle formed by the plane including the periphery of the flange intersects the plane including the axis of the straight portion at an angle between 30° to 60°.
Claim 6
Dependent Claim
14 words
The prosthesis of claim 4, wherein the angle is between about 40° to 50°.
Claim 7
Dependent Claim
35 words
The prosthesis of claim 2, wherein the angle formed by the plane including the periphery of the flange intersects the plane including the axis of the straight portion at an angle between 30° to 60°.
Claim 8
Dependent Claim
14 words
The prosthesis of claim 6, wherein the angle is between about 40 to 50°.
Claim 9
Dependent Claim
14 words
The prosthesis of claim 1, wherein the prosthesis is formed of a synthetic fabric.
Claim 10
Dependent Claim
12 words
The prosthesis of claim 8, wherein the synthetic fabric is texturized polyester.
Claim 11
Dependent Claim
10 words
The prosthesis of claim 8, wherein the fabric is knitted.
Claim 12
Dependent Claim
10 words
The prosthesis of claim 8, wherein the fabric is woven.
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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) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |