US5370682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid woven tubular prosthesis
Assignee: Maquet Cardiovascular LLC
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Filing: 1993-04-26
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Granted: 1994-12-06
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Expires: 2013-04-26
Abstract
Abstract A solid woven tubular prosthesis having sufficient inherent wall stiffness so as to be radially self-supporting. The solid woven prosthesis is capable of being formed with a smooth, continuous inner wall that improves the hemodynamic flow with respect to conventional woven prosthesis, thereby facilitating the flow of fluid therethrough.
Inventors
- 👤 Peter J. Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
D; D03; D03D; D03D11/00; A; A61; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06; D03D3/00; D03D3/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
A tubular prosthesis for implantation in a patient's body comprising: a woven fabric having a plurality of superposed plies including an outer ply and an inner ply, each of said plies including a plurality of circumferentially extending fill yarns and a plurality of longitudinally extending warp yarns, and wherein each of the yarns extending in one direction continuously passes through at least two adjacent plies, and wherein said plies have a porosity sufficient to allow ingrowth of tissue while limiting leakage of fluid therefrom.
Claim 2
Dependent Claim
84 words
A tubular prosthesis for implantation in a patient's body comprising: a woven fabric having a plurality of superposed plies including an outer ply and an inner ply, each of said plies including a plurality of circumferentially extending fill yarns and a plurality of longitudinally extending warp yarns, and wherein each of the yarns extending in one direction continuously passes through at least two adjacent plies, and wherein said plies have a porosity sufficient to allow ingrowth of tissue while limiting leakage of fluid therefrom.
Claim 3
Dependent Claim
20 words
The prosthesis according to claim 1, wherein each of said warp yarns continuously passes through at least two adjacent plies.
Claim 4
Dependent Claim
21 words
The prosthesis according to claim 1, wherein said woven fabric has a thickness of about 0.5 mm to about 1.25 mm.
Claim 5
Dependent Claim
22 words
The prosthesis according to claim 1, wherein said woven fabric is heat-set whereby said woven fabric undergoes a period of controlled shrinkage.
Claim 6
Dependent Claim
25 words
The prosthesis according to claim 4, wherein said woven fabric is heat-set in an elastically compressed position to provide said woven fabric with longitudinal compliance.
Claim 7
Dependent Claim
29 words
The prosthesis according to claim 1, wherein said plies are formed from non-homogeneous materials whereby physical properties of said outer ply differ from physical properties of said inner ply.
Claim 8
Dependent Claim
23 words
The prosthesis according to claim 6, wherein said plurality of plies create a porosity gradient between said outer ply and said inner ply.
Claim 9
Dependent Claim
30 words
The prosthesis according to claim 7, wherein the porosity of said woven fabric at said outer ply is greater than the porosity of said woven fabric at said inner ply.
Claim 10
Dependent Claim
20 words
The prosthesis according to claim 6, wherein said outer ply is formed from a textured material to facilitate tissue attachment.
Claim 11
Dependent Claim
19 words
The prosthesis according to claim 9, wherein said warp yarns in said outer ply form a filamentous velour surface.
Claim 12
Dependent Claim
18 words
The prosthesis according to claim 6, wherein at least one of said warp yarns is an elastomeric polymer.
Claim 13
Dependent Claim
54 words
The prosthesis according to claim 1, further comprising a middle ply, and wherein said outer ply is formed from a filamentous material for enhanced tissue attachment, said middle ply is formed from a fusible material to aid in ravel resistance, and said inner ply is formed from a bioresorbable material to aid in healing.
Claim 14
Dependent Claim
23 words
The prosthesis according to claim 1, wherein said prosthesis is formed with a smooth continuous inner surface to facilitate flow of fluid therethrough.
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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) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |