Patent US6648874B2 successfully refreshed from Google Patents.
US6648874B2
Expired / Lapsed
US
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Guide catheter with lubricious inner liner
Assignee: Boston Scientific Scimed Inc
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Filing: 2000-02-28
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Granted: 2003-11-18
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Expires: 2020-02-28
Abstract
Abstract A catheter shaft is disclosed utilizing perfluoroalkoxy polytetrafluoroethylene (PFA) as a lubricious inner lumen for which to aid the advancement of additional medical devices. PFA possesses adequate lubricity while requiring no special fabricating techniques. Thus, PFA may be processed by conventional melt-extrusion techniques, as well as by injection, compression, rotational transfer, and blow molding processes; optimizing the manufacturability of the lubricious inner lumen. Additionally, the catheter shaft includes portions of the outer tubular member modified through an ablation process. The ablation process selectively removes extruded polymeric material around and between the contours of a braided support layer. In one illustrative embodiment, a portion of the outer layer of the catheter is removed by laser ablation and then refilled by polymeric inserts having various flexibility characteristics.
Inventors
- 👤 Mary Parisi
- 👤 Martin Willard
- 👤 Yiqun Wang
- 👤 Robert John Bianchi
- 👤 Timothy L. Rubesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:12
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/12; A61L29/00; A61L29/08; A61L29/085; A61L29/12; A61L31/08; A61L31/10; A61M; A61M25/00; A61M25/0043; A61M25/005; A61M25/0045; A61M2025/0046; A61M2025/0047; A61M25/0053
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
174 words
A catheter shaft comprising: an inner tubular member having a proximal portion, a distal portion, and a lumen extending longitudinally therethrough; a support member layer disposed over a substantial portion of the inner tubular member and conforming thereto, the support member layer having a ridged contour comprising peaks and valleys; a first outer tubular member disposed over a substantial portion of the support member layer and the inner tubular member and conforming thereto, the first outer tubular member having an outer surface, an inner surface, a proximal portion and a distal portion, the distal portion having an outside diameter less than the outside diameter of the proximal portion, the distal portion disposed over the support member layer so that at least a portion of the outer surface of the first outer tubular member conforms to the ridged contour of the support member layer; and a second outer tubular member disposed over at least a portion of the distal portion of the first outer tubular member that follows the contour of the support member layer.
Claim 2
Dependent Claim
174 words
A catheter shaft comprising: an inner tubular member having a proximal portion, a distal portion, and a lumen extending longitudinally therethrough; a support member layer disposed over a substantial portion of the inner tubular member and conforming thereto, the support member layer having a ridged contour comprising peaks and valleys; a first outer tubular member disposed over a substantial portion of the support member layer and the inner tubular member and conforming thereto, the first outer tubular member having an outer surface, an inner surface, a proximal portion and a distal portion, the distal portion having an outside diameter less than the outside diameter of the proximal portion, the distal portion disposed over the support member layer so that at least a portion of the outer surface of the first outer tubular member conforms to the ridged contour of the support member layer; and a second outer tubular member disposed over at least a portion of the distal portion of the first outer tubular member that follows the contour of the support member layer.
Claim 3
Dependent Claim
17 words
The catheter shaft of claim 1 , wherein the inner tubular membrane is a lubricious fluorinated polymer.
Claim 4
Dependent Claim
14 words
The catheter shaft of claim 2 , wherein the fluorinated polymer is perfluoroalkoxy (PFA).
Claim 5
Dependent Claim
14 words
The catheter shaft of claim 1 , wherein the inner tubular member is extrudable.
Claim 6
Dependent Claim
18 words
The catheter shaft of claim 1 , wherein the support member layer comprises one or more elongated filaments.
Claim 7
Dependent Claim
14 words
The catheter shaft of claim 5 , wherein at least one filament comprises tungsten.
Claim 8
Dependent Claim
20 words
The catheter shaft of claim 5 , wherein the one or more elongated strands are wound to form a braid.
Claim 9
Dependent Claim
20 words
The catheter shaft of claim 5 , wherein the one or more elongated strands are wound to form a coil.
Claim 10
Dependent Claim
204 words
A catheter shaft for a guide catheter, the catheter shaft comprising: an inner tubular member having a proximal portion, a distal portion, and a lumen extending longitudinally therethrough; a support member layer disposed over a substantial portion of the inner tubular member and conforming thereto, the support member layer having an outside surface including a series of peaks and valleys; a first outer tubular member disposed over a substantial portion of the support member layer and the inner tubular member and conforming thereto, the first outer tubular member having an outer surface, an inner surface, a proximal portion and a distal portion, the distal portion having an outside diameter less than the outside diameter of the proximal portion, the distal portion disposed over the support member layer so that at least a portion of the outer surface follows the peaks and valleys formed by the support member layer; and a second outer tubular member having an inner surface and an outer surface, the second outer tubular member disposed over at least a portion of the distal portion of the first outer tubular member wherein the inner surface of the second outer tubular member follows the peaks and valleys formed by the support member layer.
Claim 11
Dependent Claim
204 words
A catheter shaft for a guide catheter, the catheter shaft comprising: an inner tubular member having a proximal portion, a distal portion, and a lumen extending longitudinally therethrough; a support member layer disposed over a substantial portion of the inner tubular member and conforming thereto, the support member layer having an outside surface including a series of peaks and valleys; a first outer tubular member disposed over a substantial portion of the support member layer and the inner tubular member and conforming thereto, the first outer tubular member having an outer surface, an inner surface, a proximal portion and a distal portion, the distal portion having an outside diameter less than the outside diameter of the proximal portion, the distal portion disposed over the support member layer so that at least a portion of the outer surface follows the peaks and valleys formed by the support member layer; and a second outer tubular member having an inner surface and an outer surface, the second outer tubular member disposed over at least a portion of the distal portion of the first outer tubular member wherein the inner surface of the second outer tubular member follows the peaks and valleys formed by the support member layer.
Claim 12
Dependent Claim
17 words
The catheter shaft of claim 9 , wherein the inner tubular membrane is a lubricious fluorinated polymer.
Claim 13
Dependent Claim
14 words
The catheter shaft of claim 10 , wherein the fluorinated polymer is perfluoroalkoxy (PFA).
Claim 14
Dependent Claim
18 words
The catheter shaft of claim 9 , wherein the support member layer comprises one or more elongated filaments.
Claim 15
Dependent Claim
14 words
The catheter shaft of claim 12 , wherein at least one filament comprises tungsten.
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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) | 2006-11-17 | 2007-05-19 | 2007-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-11-17 | 2011-05-19 | 2011-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-11-17 | 2015-05-19 | 2015-11-18 | $7700.00 | Window Closed / Lapsed |