US5836926A
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US
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Intravascular catheter
Assignee: Boston Scientific Scimed Inc
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Filing: 1996-05-13
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Granted: 1998-11-17
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Expires: 2016-05-13
Abstract
Abstract An intravascular catheter having an elongated tubular body with a proximal portion, a distal portion and a lumen extending therebetween. The tubular body is formed with: (a) a first layer of polytetrafluoroethylene; (b) a reinforcing means at least partially surrounding the inner layer; and (c) a second layer comprising a blend of polyetherester elastomer and polybutylene terephthalate at least partially covering the second layer.
Inventors
- 👤 Alex A. Peterson
- 👤 John B. Logan
- 👤 Mukund R. Patel
- 👤 William F. Polley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0012; A61M25/0043; A61M25/005; A61M25/0053
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
80 words
An intravascular catheter comprising: (a) a first layer having an innermost surface, the first layer comprising a polymer having a kinetic coefficient of friction (steel on polymer) of less than about 0.50; (b) a second layer disposed about the first layer and having an outermost surface, the second layer comprising a blend of polyetherester elastomer and polybutylene terephthalate; and (c) a reinforcing element disposed between the innermost surface of the first layer and the outermost surface of the second layer.
Claim 2
Dependent Claim
80 words
An intravascular catheter comprising: (a) a first layer having an innermost surface, the first layer comprising a polymer having a kinetic coefficient of friction (steel on polymer) of less than about 0.50; (b) a second layer disposed about the first layer and having an outermost surface, the second layer comprising a blend of polyetherester elastomer and polybutylene terephthalate; and (c) a reinforcing element disposed between the innermost surface of the first layer and the outermost surface of the second layer.
Claim 3
Dependent Claim
24 words
The intravascular catheter of claim 1 wherein the first layer comprises a polymer selected from the group consisting of polytetrafluoroethylene, polyvinylidene fluoride, and polyamide.
Claim 4
Dependent Claim
26 words
The intravascular catheter of claim 1 wherein the first layer comprises a polymer having a kinetic coefficient of friction (steel on polymer) less than about 0.10.
Claim 5
Dependent Claim
14 words
The intravascular catheter of claim 3 wherein the first layer consists essentially of polytetrafluoroethylene.
Claim 6
Dependent Claim
19 words
The intravascular catheter of claim 1 wherein the second layer has a durometer of from about 30 D-90 D.
Claim 7
Dependent Claim
19 words
The intravascular catheter of claim 5 wherein the second layer has a durometer of from about 38 D-74 D.
Claim 8
Dependent Claim
17 words
The intravascular catheter of claim 1 wherein the second layer comprises about 10-94 weight percent polybutylene terephthalate.
Claim 9
Dependent Claim
23 words
The intravascular catheter of claim 7 wherein the second layer comprises about 8-12 weight percent polyetherester and about 88-92 weight percent polybutylene terephthalate.
Claim 10
Dependent Claim
21 words
The intravascular catheter of claim 1 having an outer diameter in the range of from about 2 French to 24 French.
Claim 11
Dependent Claim
22 words
The intravascular catheter of claim 1 having an outer diameter in the range of from about 4 French to about 12 French.
Claim 12
Dependent Claim
21 words
The intravascular catheter of claim 1 wherein the reinforcing element is totally embedded between the first layer and the second layer.
Claim 13
Dependent Claim
17 words
The intravascular catheter of claim 1 wherein the reinforcing element is substantially embedded in the second layer.
Claim 14
Dependent Claim
17 words
The intravascular catheter of claim 1 wherein the reinforcing element is a braided metal mesh of filaments.
Claim 15
Dependent Claim
21 words
The intravascular catheter of claim 12 wherein the braided metal mesh comprises metal filaments braided in a 1 over 1 pattern.
Claim 16
Dependent Claim
21 words
The intravascular catheter of claim 12 wherein the braided metal mesh comprises metal filaments braided in a 2 over 2 configuration.
Claim 17
Dependent Claim
25 words
The intravascular catheter of claim 12 wherein the braided metal mesh comprises filaments formed of a metal selected from stainless steel and ELGILOY nickel-cobalt alloy.
Claim 18
Dependent Claim
21 words
The intravascular catheter of claim 1 wherein the reinforcing element comprises a polymer forming a mesh, a tube, or a fabric.
Claim 19
Dependent Claim
24 words
The intravascular catheter of claim 17 wherein the polymer forming the mesh, tube or fabric is selected from carbon fibers, polyaramide, and combinations thereof.
Claim 20
Dependent Claim
34 words
The intravascular catheter of claim 1 and further including an annular soft-tip member forming a distal end of the catheter, the soft-tip member comprising polyetherester elastomer having a durometer less than about 50 D.
Claim 21
Dependent Claim
49 words
A guide catheter comprising: (a) a first layer comprising polytetrafluoroethylene; (b) a braided metal mesh of filaments at least partially surrounding the first layer; and (c) a second layer at least partially covering the braided metal mesh, the second layer comprising a blend of polyetherester elastomer and polybutylene terephthalate.
Claim 22
Dependent Claim
49 words
A guide catheter comprising: (a) a first layer comprising polytetrafluoroethylene; (b) a braided metal mesh of filaments at least partially surrounding the first layer; and (c) a second layer at least partially covering the braided metal mesh, the second layer comprising a blend of polyetherester elastomer and polybutylene terephthalate.
Claim 23
Dependent Claim
19 words
The intravascular catheter of claim 20 wherein the second layer has a durometer of from about 38 D-74 D.
Claim 24
Dependent Claim
17 words
The intravascular catheter of claim 21 wherein the second layer comprises about 10-94 weight percent polybutylene terephthalate.
Claim 25
Dependent Claim
23 words
The intravascular catheter of claim 22 wherein the second layer comprises about 8-12 weight percent polyetherester and about 88-92 weight percent polybutylene terephthalate.
Claim 26
Dependent Claim
21 words
The intravascular catheter of claim 20 wherein the braided metal mesh comprises metal filaments braided in a 1 over 1 pattern.
Claim 27
Dependent Claim
21 words
The intravascular catheter of claim 20 wherein the braided metal mesh comprises metal filaments braided in a 2 over 2 configuration.
Claim 28
Dependent Claim
34 words
The intravascular catheter of claim 20 and further including an annular soft-tip member forming a distal end of the catheter, the soft-tip member comprising polyetherester elastomer having a durometer less than about 50 D.
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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 |