US5836962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoprosthesis
Assignee: Boston Scientific Corp
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Filing: 1997-01-22
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Granted: 1998-11-17
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Expires: 2017-01-22
Abstract
Abstract A body compatible device including an elongate filament substantially uniform in lateral cross-section over its length and having multiple fibers having high tensile strength embedded in a polymeric material. The polymeric material may be melted onto the fibers, and the filament may have an elongate polymeric case surrounding the filament. The body compatible device may be a stent of a tubular latticework.
Inventors
- 👤 Marc Gianotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:53
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/88; A61F2/90; A61F2/0077; A61F2250/00; A61F2250/0058; A61F2250/0067
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
122 words
An endoprosthesis for use in vessels of the human or animal body, comprising each of said filaments including a tubular latticework made of flexurally rigid elastic filaments, each of said filaments including a core element of high tensile strength and a shell which surrounds the core element and does not substantially alter the tensile strength of the filament, the shell being designed to receive active substances, wherein the core element consists of a composite material, the composite material being made up of a plurality of high tensile strength, elements which, for the purpose of achieving a high flexural rigidity of the filament, are sheathed by a support material of low tensile strength, and the shell is anchored unreleasably on the support material.
Claim 2
Dependent Claim
122 words
An endoprosthesis for use in vessels of the human or animal body, comprising each of said filaments including a tubular latticework made of flexurally rigid elastic filaments, each of said filaments including a core element of high tensile strength and a shell which surrounds the core element and does not substantially alter the tensile strength of the filament, the shell being designed to receive active substances, wherein the core element consists of a composite material, the composite material being made up of a plurality of high tensile strength, elements which, for the purpose of achieving a high flexural rigidity of the filament, are sheathed by a support material of low tensile strength, and the shell is anchored unreleasably on the support material.
Claim 3
Dependent Claim
37 words
The endoprosthesis according to claim 1 wherein both the support material and the shell each comprise a thermoplastic, and the thermoplastic of the support material is melted and fused together with the thermoplastic of the shell material.
Claim 4
Dependent Claim
17 words
The endoprosthesis according to claim 2 wherein the shell contains the same thermoplastic as the support material.
Claim 5
Dependent Claim
25 words
The endoprosthesis according to claim 1 wherein the support or the shell material is prepared from a mixture of substances which contain a contrast medium.
Claim 6
Dependent Claim
35 words
The endoprosthesis according to claim 1 wherein material located on the filament exterior and comprising the shell is prepared from a mixture of substances, which contain a medication effective in a human or animal body.
Claim 7
Dependent Claim
19 words
The endoprosthesis according to claim 1 wherein the support material has a surface on which the shell is anchored.
Claim 8
Dependent Claim
32 words
The endoprosthesis according to claim 1 wherein material located on the filament exterior and comprising the shell has pores in which a medication effective in the human or animal body is stored.
Claim 9
Dependent Claim
19 words
The endoprosthesis of claim 1 wherein the shell is porous and contains a medically active substance in its pores.
Claim 10
Dependent Claim
85 words
A body compatible stent comprising at least two interwoven sets of elongate, resilient elements substantially uniform in lateral cross-section over their lengths and forming a tubular latticework which is compressible upon radially internally directed forces to a reduced diameter and self-expandable upon release of the radially internally directed forces to an expanded diameter, wherein the elements comprise: (a) multiple fibers having high tensile strength; (b) a first thermoplastic material embedding the fibers to form a composite; and (c) a second thermoplastic material embedding the composite.
Claim 11
Dependent Claim
85 words
A body compatible stent comprising at least two interwoven sets of elongate, resilient elements substantially uniform in lateral cross-section over their lengths and forming a tubular latticework which is compressible upon radially internally directed forces to a reduced diameter and self-expandable upon release of the radially internally directed forces to an expanded diameter, wherein the elements comprise: (a) multiple fibers having high tensile strength; (b) a first thermoplastic material embedding the fibers to form a composite; and (c) a second thermoplastic material embedding the composite.
Claim 12
Dependent Claim
12 words
The stent of claim 9 wherein the fibers comprise inorganic polymeric fibers.
Claim 13
Dependent Claim
17 words
The stent of claim 9 wherein the fibers comprise carbon, Kevlar aramide fibers, glass, or combinations thereof.
Claim 14
Dependent Claim
14 words
The stent of claim 9 wherein the first thermoplastic material is polyetheretherketone or polyethersulfone.
Claim 15
Dependent Claim
17 words
The stent of claim 9 wherein the first and second thermoplastic materials are, the same polymeric materials.
Claim 16
Dependent Claim
15 words
The stent of claim 9 wherein the first polymeric material is melted onto the fibers.
Claim 17
Dependent Claim
19 words
The stent of claim 9 wherein the first polymeric material and/or the second polymeric material contain a contrast medium.
Claim 18
Dependent Claim
105 words
A body compatible stent comprising at least two interwoven sets of elongate, resilient elements substantially uniform in lateral cross-section over their lengths and forming a tubular latticework which is compressible upon radially internally directed forces to a reduced diameter and self-expandable upon release of the radially internally directed forces to an expanded diameter, wherein the elements comprise: (a) multiple polymeric fibers having high tensile strength; (b) a first thermoplastic material embedding the fibers to form a composite; and (c) a second thermoplastic material embedding the composite and forming a porous exposed outermost surface on the elements which includes a medically active material within its pores.
Claim 19
Dependent Claim
105 words
A body compatible stent comprising at least two interwoven sets of elongate, resilient elements substantially uniform in lateral cross-section over their lengths and forming a tubular latticework which is compressible upon radially internally directed forces to a reduced diameter and self-expandable upon release of the radially internally directed forces to an expanded diameter, wherein the elements comprise: (a) multiple polymeric fibers having high tensile strength; (b) a first thermoplastic material embedding the fibers to form a composite; and (c) a second thermoplastic material embedding the composite and forming a porous exposed outermost surface on the elements which includes a medically active material within its pores.
Claim 20
Dependent Claim
12 words
The stent of claim 16 wherein the polymeric fibers comprise inorganic fibers.
Claim 21
Dependent Claim
18 words
The stent of claim 16 wherein the polymeric fibers are carbon, Kevlar aramide fibers, glass, or combinations thereof.
Claim 22
Dependent Claim
14 words
The stent of claim 16 wherein the first thermoplastic material is polyetheretherketone or polyethersulfone.
Claim 23
Dependent Claim
17 words
The stent of claim 16 wherein the first and second thermoplastic materials are the same polymeric materials.
Claim 24
Dependent Claim
15 words
The stent of claim 16 wherein the first polymeric material is melted onto the fibers.
Claim 25
Dependent Claim
19 words
The stent of claim 16 wherein the first polymeric material and/or the second polymeric material contain a contrast medium.
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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) | 2001-11-16 | 2002-05-18 | 2002-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-16 | 2006-05-18 | 2006-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-16 | 2010-05-18 | 2010-11-17 | $7700.00 | Window Closed / Lapsed |