Patent US4793350A successfully refreshed from Google Patents.
US4793350A
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US
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Liquid filled low profile dilatation catheter
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1987-01-06
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Granted: 1988-12-27
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Expires: 2007-01-06
Abstract
Abstract Low profile dilatation catheter having an elongate flexible tubular member with proximal and distal extremities and with a flow passage extending therethrough. An inflatable balloon is mounted on the distal extremity of the elongate flexible tubular member so that the balloon has its interior in communication with the flow passage in the tubular member. A flexible tip is secured to the distal extremity of the balloon. A core wire extends through the elongate flexible member and has proximal and distal extremities. The distal extremity of the core wire is tapered and extends through the balloon and into the flexible tip. The distal extremity of the core wire is secured to the flexible tip. A rotator is provided for rotating the proximal extremity of the core wire for causing rotation of the flexible tip. Self-venting means is provided for venting the balloon to ambient. An adapter is carried by the proximal extremity of the elongate tubular member. A liquid is supplied to the adapter and the flow passage for inflating and deflating the inflatable balloon.
Inventors
- 👤 Craig E. Mar
- 👤 Jeffrey S. Frisbie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:36
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0097; A61M25/01; A61M25/0105; A61M25/0133; A61M25/09; A61M25/09016; A61M25/09033; A61M2025/1043; A61M2025/1079; A61M2025/1093; A61M25/0108
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
186 words
A low profile dilatation catheter comprising an elongate flexible tubular member having proximal and distal extremities and having a flow passage extending therethrough, an inflatable balloon having proximal and distal extremities with the proximal extremity of the balloon connected to the distal extremity of the elongate flexible tubular member so that the interior of the balloon is in fluid communication with the flow passage in the tubular member, a flexible tip secured to the distal extremity of the balloon, a core wire having a tapered distal extremity and extending through the balloon and into the flexible tip, means securing the distal extremity of the core wire to the flexible tip, means for rotating the proximal extremity of the core wire for causing rotation of the flexible tip, a passageway between the core wire and the inner diameter of the flexible tip for venting gas from the balloon to ambient without passage of inflation liquid therethrough, and an adapter carried by the proximal extremity of the elongate tubular member which is adapted to supply a liquid to the flow passage for inflating and deflating the inflatable balloon.
Claim 2
Dependent Claim
186 words
A low profile dilatation catheter comprising an elongate flexible tubular member having proximal and distal extremities and having a flow passage extending therethrough, an inflatable balloon having proximal and distal extremities with the proximal extremity of the balloon connected to the distal extremity of the elongate flexible tubular member so that the interior of the balloon is in fluid communication with the flow passage in the tubular member, a flexible tip secured to the distal extremity of the balloon, a core wire having a tapered distal extremity and extending through the balloon and into the flexible tip, means securing the distal extremity of the core wire to the flexible tip, means for rotating the proximal extremity of the core wire for causing rotation of the flexible tip, a passageway between the core wire and the inner diameter of the flexible tip for venting gas from the balloon to ambient without passage of inflation liquid therethrough, and an adapter carried by the proximal extremity of the elongate tubular member which is adapted to supply a liquid to the flow passage for inflating and deflating the inflatable balloon.
Claim 3
Dependent Claim
60 words
A catheter as in claim 1 wherein the means for rotating the proximal extremity of the core wire includes means for securing the proximal extremity of the core wire to the proximal extremity of the tubular member so that as the adapter is rotated, the core wire and the tubular member are rotated to provide rotation of the flexible tip.
Claim 4
Dependent Claim
19 words
A catheter as in claim 1 wherein said balloon has an inflated diameter of less than approximately two millimeters.
Claim 5
Dependent Claim
20 words
A catheter as in claim 3 wherein said flexible tubular member has a diameter of less than approximately 0.020 inch.
Claim 6
Dependent Claim
19 words
A catheter as in claim 3 wherein said core wire has a diameter of less than approximately 0.012 inch.
Claim 7
Dependent Claim
35 words
A tubular member as in claim 4 wherein said tubular member has a wall thickness of approximately 0.001 inch and an outside diameter of approximately 0.018 inch with an inside diameter of approximately 0.016 inch.
Claim 8
Dependent Claim
34 words
A catheter as in claim 1 wherein said passageway is defined by a capillary tube disposed in the distal extremity of the balloon and wherein the core wire extends through the capillary tube .
Claim 9
Dependent Claim
23 words
A catheter as in claim 7 wherein the core wire is free to rotate with respect to the distal extremity of the balloon.
Claim 10
Dependent Claim
23 words
A catheter as in claim 1 wherein the proximal extremity of the balloon is disposed within the distal extremity of the tubular member.
Claim 11
Dependent Claim
129 words
In a balloon dilatation catheter, an elongate flexible tubular member having proximal and distal extremities and having a flow passage extending therethrough, an inflatable balloon carried by the distal extremity of the tubular member and having its interior in communication with the flow passage, the balloon having a distal extremity, a flexible tip secured to the distal extremity of the balloon, a capillary tube disposed in the distal extremity of the balloon, a core wire extending through the flow passage, the balloon and the capillary tube and means securing the core wire to the flexible tip, the core wire and the capillary tube providing an annular flow passage for the venting of air through the interior of the balloon to ambient when the balloon is filled with a liquid.
Claim 12
Dependent Claim
129 words
In a balloon dilatation catheter, an elongate flexible tubular member having proximal and distal extremities and having a flow passage extending therethrough, an inflatable balloon carried by the distal extremity of the tubular member and having its interior in communication with the flow passage, the balloon having a distal extremity, a flexible tip secured to the distal extremity of the balloon, a capillary tube disposed in the distal extremity of the balloon, a core wire extending through the flow passage, the balloon and the capillary tube and means securing the core wire to the flexible tip, the core wire and the capillary tube providing an annular flow passage for the venting of air through the interior of the balloon to ambient when the balloon is filled with a liquid.
Claim 13
Dependent Claim
40 words
A catheter as in claim 10 together with means secured to the core wire for rotating the core wire for rotating the flexible tip, the core wire being free to rotate with respect to the distal extremity of the balloon.
Claim 14
Dependent Claim
20 words
A catheter as in claim 11 wherein the rotating means includes means for limiting the rotation of the core wire.
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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) | 1991-12-27 | 1992-06-27 | 1992-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-27 | 1996-06-27 | 1996-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-27 | 2000-06-27 | 2000-12-27 | $7700.00 | Window Closed / Lapsed |