Tandem balloon dilatation catheter

• US 5,002,532 A
• Filed: 06/21/1989
• Issued: 03/26/1991
• Est. Priority Date: 01/06/1987
• Status: Expired due to Term

• Current Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Original Assignee: Advanced Cardiovascular Systems Incorporated (Abbott Laboratories)
• Inventors: Gaiser, John W., Samson, Wilfred J.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Lewis, William W.
• Application Number:
  US07/370,085
• Time in Patent Office: 643 Days
• Field of Search: 128/344, 128/348.1, 128/356, 604/96-103, 604/86, 604/283, 606/191, 606/192, 606/194
• US Class Current: 604/101.01
• CPC Class Codes: A61M 2025/0004 having two or more concentrically arranged tubes for forming a concentric catheter system
• CPC Class Codes: A61M 2025/1079 having radio-opaque markers in the region of the balloon
• CPC Class Codes: A61M 25/0108 using radio-opaque or ultrasound markers
• CPC Class Codes: A61M 25/1011 Multiple balloon catheters
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

Tandem balloon dilatation catheter assembly having a flexible elongate member with proximal and distal ends. The flexible elongate member is provided with at least first and second lumens extending therethrough. First and second balloons are carried by the distal extremity of the flexible elongate member and are spaced apart longitudinally thereof. The first balloon has a diameter which is less than the diameter of the second balloon. The first balloon is disposed distally of the second balloon. Communication is established between the interior of the first balloon and the first lumen and between the interior of the second balloon and the second lumen.

Claims

1. A steerable dilation catheter for angioplasty procedures, comprising:

(a) a first elongated tubular member;

(b) a first dilatation balloon on the distal procedure of the first tubular member;

(c) a second elongated tubular member having an inner lumen extending therethrough which is disposed within the first elongated tubular member and which defines therebetween an annular lumen in fluid communication with the interior of the first dilatation balloon, a distal portion of the second tubular member extending through the interior of the first dilatation balloon being sealed about the distal portion of the second tubular member extending therethrough;

(d) a second dilatation balloon distal to the first balloon on the distal portion of the second tubular member, the inner lumen of the second tubular member being in fluid communication with the interior of the second dilatation balloon;

(e) a guidewire or guiding member disposed within the inner lumen of the second tubular member which is fixed to prevent the removal thereof and which has a solid portion extending through the interior of the second dilatation balloon and out the distal end thereof with the distal end of the second balloon being sealed about the solid portion of the guidewire or guiding member extending therethrough;

(f) means provided on the proximal end of the guidewire or guiding member to torque the guidewire or guiding member about the longitudinal axis thereof; and

(g) an adapter assembly provided on the proximal ends of the first and second tubular members to facilitate the independent inflation and deflation of the first dilatation balloon through the annular lumen and the independent inflation and deflation of the second dilatation balloon through the inner lumen of the second tubular member.