Patent US5176660A successfully refreshed from Google Patents.
US5176660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter having reinforcing strands
Assignee: Cordis Corp
•
Filing: 1991-03-08
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Granted: 1993-01-05
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Expires: 2011-03-08
Abstract
Abstract A flexible catheter comprises at least one resilient, tubular layer in telescoping relation with a tubular sheath made of helically disposed crossing strands. At least one of the strands has a width that substantially exceeds its height, preferably having a width that is 4 to 8 times greater than its height. Some of the strands are circular in cross-section. The Catheter also includes at least one permanently emplaced reinforcing filament carried generally parallel to the axis of the catheter, to increase the longitudinal stiffness of at least a portion of the catheter.
Inventors
- 👤 Csaba Truckai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:02
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0043; A61M25/005; A61M25/0053
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
130 words
A flexible catheter which comprises at least one resilient, tubular layer in telescoping relation with a tubular sheath made of helically disposed crossing strands, at least one of said strands having a width that substantially exceeds its height, and at least one strand defining a pair of opposed, major sides, one of said major sides facing along its entire length the axis of said catheter, said at least one strand being helically wound on said resilient tubular layer at a total tension of at least 250,000 p.s.i., said catheter also including at least one permanently emplaced reinforcing filament carried generally parallel to the axis of said catheter, to increase the longitudinal stiffness of at least a portion of the catheter, some of said strands present being of substantially circular cross-section.
Claim 2
Dependent Claim
130 words
A flexible catheter which comprises at least one resilient, tubular layer in telescoping relation with a tubular sheath made of helically disposed crossing strands, at least one of said strands having a width that substantially exceeds its height, and at least one strand defining a pair of opposed, major sides, one of said major sides facing along its entire length the axis of said catheter, said at least one strand being helically wound on said resilient tubular layer at a total tension of at least 250,000 p.s.i., said catheter also including at least one permanently emplaced reinforcing filament carried generally parallel to the axis of said catheter, to increase the longitudinal stiffness of at least a portion of the catheter, some of said strands present being of substantially circular cross-section.
Claim 3
Dependent Claim
18 words
The catheter of claim 1 in which said tubular sheath is made of at least some metal strands.
Claim 4
Dependent Claim
23 words
The catheter of claim 1 in which said tubular sheath is sealed between an inner and an outer of said resilient, tubular layers.
Claim 5
Dependent Claim
20 words
The catheter of claim 1 in which all of said crossing strands present have widths that substantially exceed their heights.
Claim 6
Dependent Claim
18 words
The catheter of claim 1 in which said at least one strand present is made of spring steel.
Claim 7
Dependent Claim
44 words
The catheter of claim 1 in which said at least one strand present has a width of 0.006 to 0.02 inch and a height of 0.0015 to 0.004 inch, the width of said one strand being at least 4 times greater the its height.
Claim 8
Dependent Claim
17 words
The catheter of claim 1 in which said reinforcing filament is made of a biaxially oriented thermoplastic.
Claim 9
Dependent Claim
17 words
The catheter of claim 1 in which said total tension is no more than about 350,000 p.s.i..
Claim 10
Dependent Claim
134 words
A flexible catheter which comprises at least one resilient, tubular layer in telescoping relation with a tubular sheath made of helically disposed crossing strands, at least one of said strands having a width that is 4 to 8 times greater than its height, said at least one strand defining a pair of opposed major sides, one of said major sides facing along its entire length the axis of said catheter, said at least one strand being helically wound on said resilient, tubular layer at a total tension of at least 250,000 p.s.i., said catheter also carrying at least one permanently emplaced reinforcing filament generally parallel to the axis of said catheter, to increase the longitudinal stiffness of at least a portion of the catheter, some of the strands present being of substantially circular cross-section.
Claim 11
Dependent Claim
134 words
A flexible catheter which comprises at least one resilient, tubular layer in telescoping relation with a tubular sheath made of helically disposed crossing strands, at least one of said strands having a width that is 4 to 8 times greater than its height, said at least one strand defining a pair of opposed major sides, one of said major sides facing along its entire length the axis of said catheter, said at least one strand being helically wound on said resilient, tubular layer at a total tension of at least 250,000 p.s.i., said catheter also carrying at least one permanently emplaced reinforcing filament generally parallel to the axis of said catheter, to increase the longitudinal stiffness of at least a portion of the catheter, some of the strands present being of substantially circular cross-section.
Claim 12
Dependent Claim
23 words
The catheter of claim 9 in which said tubular sheets is sealed between an inner and an outer of said resilient, tubular layers.
Claim 13
Dependent Claim
20 words
The catheter of claim 10 in which all of said crossing strands present have width that substantially exceed their heights.
Claim 14
Dependent Claim
17 words
The catheter of claim 9 in which said reinforcing filament is made of a biaxially oriented thermoplastic.
Claim 15
Dependent Claim
17 words
The catheter of claim 10 in which said at least one strand is made of spring steel.
Claim 16
Dependent Claim
17 words
The catheter of claim 9 in which said total tension is no more than about 350,000 p.s.i..
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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) | 1996-01-05 | 1996-07-06 | 1997-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-05 | 2000-07-06 | 2001-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-05 | 2004-07-06 | 2005-01-05 | $7700.00 | Window Closed / Lapsed |