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US4898577A
Expired / Lapsed
US
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Guiding cathether with controllable distal tip
Assignee: Advanced Cardiovascular Systems Inc
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Filing: 1988-09-28
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Granted: 1990-02-06
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Expires: 2008-09-28
Abstract
Abstract Guiding catheter and method of using the same in a cardiovascular procedure such as coronary angioplasty. The catheter has an elongated shaft with a deflectable distal portion. One lumen extends through the elongated shaft to form a passageway through which a dilatation catheter can be introduced. A second smaller lumen extends through the shaft to form a passageway for a control line which passes therethrough and which is connected to the distal tip. Proximal movement of the control line decreases the included angle between the distal portion and the main portion of the shaft. Pull on the control line also exerts a force on the distal portion of the guiding catheter which transmits a resultant axial force to push the catheter disposed within the first lumen. Pull on the control line also allows for catheter tip configuration adjustment thereby enabling the catheter to engage a difficult coronary ostium. In the disclosed embodiments, the distal portion is formed in two sections. Pulling the control line decreases the included angles between the distal sections and the main sections while the distal portion is positioned within a patient. The axial force is particularly advantageous with dilatation catheters to aid in directing the distal end thereof across a lesion.
Inventors
- 👤 Rodney S. Badger
- 👤 Lawrence D. Wasicek
- 👤 Bruce H. Wand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:34
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0147; A61M25/0152; A61M2025/0161; A61M25/0043; A61M25/005
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
156 words
A guiding catheter comprising: (a) a tubular member having a proximal portion, a main portion, and a distal portion, the distal portion having at least one section which is performed at an angle with respect to the main portion; (b) a first lumen of relatively large diameter disposed within the tubular member which extends along the length thereof and which is adapted to receive catheters or guidewires therethrough; (c) a second lumen of relatively small diameter disposed within the tubular member, extending along the length thereof; (d) a control line which is disposed within the second lumen and which is secured at the disposed tip thereof to the distal portion of the tubular member; and (e) means at the proximal end of the control line to axially move the control line within the second lumen to thereby change the preformed angle between a section of the distal portion of the catheter and the main portion thereof.
Claim 2
Dependent Claim
156 words
A guiding catheter comprising: (a) a tubular member having a proximal portion, a main portion, and a distal portion, the distal portion having at least one section which is performed at an angle with respect to the main portion; (b) a first lumen of relatively large diameter disposed within the tubular member which extends along the length thereof and which is adapted to receive catheters or guidewires therethrough; (c) a second lumen of relatively small diameter disposed within the tubular member, extending along the length thereof; (d) a control line which is disposed within the second lumen and which is secured at the disposed tip thereof to the distal portion of the tubular member; and (e) means at the proximal end of the control line to axially move the control line within the second lumen to thereby change the preformed angle between a section of the distal portion of the catheter and the main portion thereof.
Claim 3
Dependent Claim
19 words
The guiding catheter of claim 1 wherein the distal portion is provided with a plurality of articulated tubular sections.
Claim 4
Dependent Claim
23 words
The guiding catheter of claim 2 wherein the plurality of tubular sections are preformed to have included angles therebetween of less than 180°.
Claim 5
Dependent Claim
22 words
The guiding catheter of claim 1 wherein the tubular member is formed of a braided wound fiber impregnated with suitable plastic material.
Claim 6
Dependent Claim
20 words
The guiding catheter of claim 4 wherein the plastic is selected from the group consisting of polyurethane and epoxy resin.
Claim 7
Dependent Claim
14 words
The guiding catheter of claim 4 wherein the fabric is formed of aramid fibers.
Claim 8
Dependent Claim
19 words
The guiding catheter of claim 1 wherein the second lumen is defined at least in part by polyimide tubing.
Claim 9
Dependent Claim
16 words
The guiding catheter of claim 1 wherein the first lumen is provided with a lubricious surface.
Claim 10
Dependent Claim
14 words
The guiding catheter of claim 8 wherein the lubricious surface is formed of polytetrafluoroethylene.
Claim 11
Dependent Claim
132 words
In a method of introducing a catheter into the cardiovascular system of a patient through a guiding catheter having a main portion and a deflectable distal portion which is preformed to have an included angle with the main section, the guiding catheter having a first lumen disposed therein through which a catheter may be introduced, and a second lumen having disposed therein a control line connected to the distal tip of the guiding catheter for positioning the tip at an angle relative to the shaft, said method comprising the steps of introducing the guiding catheter into the cardiovascular system of a patient, advancing a dilatation catheter disposed within the first lumen therethrough and pulling on the control line to exert a resultant axial force on the catheter disposed within the first lumen.
Claim 12
Dependent Claim
132 words
In a method of introducing a catheter into the cardiovascular system of a patient through a guiding catheter having a main portion and a deflectable distal portion which is preformed to have an included angle with the main section, the guiding catheter having a first lumen disposed therein through which a catheter may be introduced, and a second lumen having disposed therein a control line connected to the distal tip of the guiding catheter for positioning the tip at an angle relative to the shaft, said method comprising the steps of introducing the guiding catheter into the cardiovascular system of a patient, advancing a dilatation catheter disposed within the first lumen therethrough and pulling on the control line to exert a resultant axial force on the catheter disposed within the first lumen.
Claim 13
Dependent Claim
39 words
The method of claim 11 including the step of pulling on the control line to change the angle between the distal portion and the main portion and thereby control the location of the distal tip of the guiding catheter.
Claim 14
Dependent Claim
35 words
The method of claim 10 wherein the guiding catheter is introduced percutaneously into a patient's femoral artery and wherein the guiding catheter extends through the aortic arch and into the ostium of a coronary artery.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |