US4597755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large bore catheter having flexible tip construction
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1984-05-30
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Granted: 1986-07-01
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Expires: 2004-05-30
Abstract
Abstract Large bore catheter having a flexible tip construction. A main flexible shaft tube is provided having a flow passage therein and having proximal and distal ends. A coil spring is secured to the distal end of the main shaft tube. Flexible tubing extends over the exterior of the coil spring and has a distal extremity which extends beyond the distal extremity of the coil spring. The flexible tubing forms a close fit over the coil spring.
Inventors
- 👤 Wilfred J. Samson
- 👤 Deepak R. Gandhi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:35
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/008; A61M25/0043; A61M25/0054; A61M25/10; A61M2025/1043; A61M2025/1093; A61M25/0009; A61M25/001; A61M25/01; A61M25/0105; A61M25/0108
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
In a large bore catheter tube having a flexible tip construction, a main flexible shaft tube having proximal and distal ends and having a flow passage extending therethrough, a coil spring secured to the distal end of the main shaft tube, and flexible tubing extending over the exterior of the coil spring and having a distal extremity which extends beyond the distal extremity of the coil spring, the flexible tubing forming a close fit over the coil spring, the flexible tubing in conjunction with the coil spring providing an additional passage which adjoins and is in communication with the first named flow passage.
Claim 2
Dependent Claim
103 words
In a large bore catheter tube having a flexible tip construction, a main flexible shaft tube having proximal and distal ends and having a flow passage extending therethrough, a coil spring secured to the distal end of the main shaft tube, and flexible tubing extending over the exterior of the coil spring and having a distal extremity which extends beyond the distal extremity of the coil spring, the flexible tubing forming a close fit over the coil spring, the flexible tubing in conjunction with the coil spring providing an additional passage which adjoins and is in communication with the first named flow passage.
Claim 3
Dependent Claim
32 words
A catheter as claimed in claim 1 wherein there is a relatively smooth transition between the first named and additional passageways in the main flexible shaft tube and in the coil spring.
Claim 4
Dependent Claim
43 words
A catheter as in claim 1 wherein the proximal extremity of the coil spring is disposed within the interior of the distal extremity of the main shaft tube and wherein the flexible tubing extends over the distal extremity of the main shaft tube.
Claim 5
Dependent Claim
161 words
In a large bore catheter tube having a flexible tip construction, a main flexible shaft tube having proximal and distal ends and having a flow passage extending therethrough, a coil spring secured to the distal end of the main shaft tube, flexible tubing extending over the exterior of the coil spring and having a distal extremity which extends beyond the distal extremity of the coil spring, the flexible tubing forming a close fit over the coil spring and a balloon tubing formed of a flexible material extending coaxially from the distal extremity of the flexible tubing and the proximal extremity of the main shaft tube, said balloon tubing having a balloon carried thereby which is substantially co-extensive in length with the coil spring, the distal extremity of the balloon tubing being sealed to the distal extremity of the flexible tubing, the balloon tubing providing a flow passage extending from the balloon to the proximal extremity of the main flexible shaft tube.
Claim 6
Dependent Claim
161 words
In a large bore catheter tube having a flexible tip construction, a main flexible shaft tube having proximal and distal ends and having a flow passage extending therethrough, a coil spring secured to the distal end of the main shaft tube, flexible tubing extending over the exterior of the coil spring and having a distal extremity which extends beyond the distal extremity of the coil spring, the flexible tubing forming a close fit over the coil spring and a balloon tubing formed of a flexible material extending coaxially from the distal extremity of the flexible tubing and the proximal extremity of the main shaft tube, said balloon tubing having a balloon carried thereby which is substantially co-extensive in length with the coil spring, the distal extremity of the balloon tubing being sealed to the distal extremity of the flexible tubing, the balloon tubing providing a flow passage extending from the balloon to the proximal extremity of the main flexible shaft tube.
Claim 7
Dependent Claim
25 words
A catheter as in claim 4 wherein said main shaft tube, said flexible tubing and said balloon tubing are formed of heat shrinkable plastic materials.
Claim 8
Dependent Claim
62 words
A catheter as in claim 4 together with a three-arm adapter secured to the proximal extremity of the main flexible shaft tube and to the proximal extremity of the balloon tubing with one of the arms being in communication with the passageway in the main shaft tubing and another of the arms being in communication with the passageway leading to the balloon.
Claim 9
Dependent Claim
117 words
In a large bore catheter tube having a flexible tip construction, a main flexible shaft tube having proximal and distal ends and having a flow passage extending therethrough, a coil spring secured to the distal end of the main shaft tube, and flexible tubing extending over the exterior of the coil spring and having a distal extremity which extends beyond the distal extremity of the coil spring, the flexible tubing forming a close fit over the coil spring, the flexible tubing in conjunction with the coil spring providing an additional passage which adjoins and is in communication wtih the first named flow passage, said coil spring being formed of a material which is relatively opaque to x-rays.
Claim 10
Dependent Claim
117 words
In a large bore catheter tube having a flexible tip construction, a main flexible shaft tube having proximal and distal ends and having a flow passage extending therethrough, a coil spring secured to the distal end of the main shaft tube, and flexible tubing extending over the exterior of the coil spring and having a distal extremity which extends beyond the distal extremity of the coil spring, the flexible tubing forming a close fit over the coil spring, the flexible tubing in conjunction with the coil spring providing an additional passage which adjoins and is in communication wtih the first named flow passage, said coil spring being formed of a material which is relatively opaque to x-rays.
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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) | 1989-06-30 | 1989-12-30 | 1990-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-30 | 1993-12-30 | 1994-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-30 | 1997-12-30 | 1998-07-01 | $7700.00 | Window Closed / Lapsed |