Angioplasty guide catheter

• US 5,445,625 A
• Filed: 06/14/1994
• Issued: 08/29/1995
• Est. Priority Date: 01/23/1991
• Status: Expired due to Term

• Current Assignee: Katetry KFT
• Original Assignee: Jan Voda
• Inventors: Voda, Jan
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): Bockelman, Mark
• Application Number:
  US08/259,567
• Time in Patent Office: 441 Days
• Field of Search: 604/95, 604/96, 604/264, 604/281-282, 606/194, 128/656-658, 128/772
• US Class Current: 604/532
• CPC Class Codes: A61M 25/0041 pre-formed, e.g. specially adapted to fit with the anatomy of body channels urethral catheters A61F2/04
• CPC Class Codes: A61M 25/0662 Guide tubes

Abstract

An angioplasty guide catheter adapted for use within a cardiovascular system and cooperable with a left main coronary artery. The guide catheter has a distal end portion such that with a distal tip of the distal end portion coaxially intubated within an ostium of the left main coronary artery fully disposed within the cardiovascular system, a portion of the distal end portion rests against and is substantially contiguous with a wall of the ascending aorta. A distal end of the resting portion is substantially directly opposite the ostium of the left main coronary artery and a portion of the distal end portion defines a generally rectilinear axis of support extending from the distal end of the resting portion across the ascending aorta to the ostium of the left main coronary artery.

Claims

1. A femoral approach angioplasty guide catheter adapted for selective catheterization of a left main coronary artery within a cardiovascular system comprising:

an elongate flexible tubular member in a relaxed state prior to insertion in the cardiovascular system further comprising in consecutive arrangement;

a first straight proximal portion extending distally from a proximal end of the tubular member;

a second straight portion joined to the first straight portion and having a length of about 1.5 to 2.5 centimeters;

a tertiary curved portion defining a junction of the first straight portion and the second straight portion and defining a vertex of an obtuse angle of 130°

to 150°

between the first and second straight portions;

a secondary curved portion joined to the second straight portion and having an arcuate curvature of about 150°

to 180° and

a radius of curvature of about 1 centimeter;

a third straight portion joined to the secondary curved portion;

a fourth straight portion joined to the third straight portion and having a distal end defining a terminal distal tip of the tubular member; and

a primary curved portion a junction of the third straight portion and the fourth straight portion and defining a vertex of an obtuse angle of 140°

to 160°

between the third and fourth straight portions,

wherein the interiors of the tertiary curved portion and every curve portion distal thereof, including the secondary curved portion and the primary curved portion, all generally face each other,

wherein the first straight portion, second straight portion, third straight portion, and fourth straight portion all lie in generally the same plane, the third straight portion and the fourth straight portion extending slightly out of plane to the extent that the fourth straight portion overlaps the first straight portion, and

wherein the length of the fourth straight portion is approximately equal to the sum of the length of the third straight portion and the radius of curvature of the secondary curved portion.

2. The catheter of claim 1 wherein:

the second straight portion has a length of about 1.5 centimeters, the third straight portion has a length of about 0.5 to 1.0 centimeters, and the fourth straight portion has a length of about 1.5 to 2.0 centimeters.

3. The catheter of claim 1 wherein:

the second straight portion has a length of about 2.0 centimeters, the third straight portion has a length of about 1.25 centimeters, and the fourth straight portion has a length of about 2.25 centimeters.

4. The catheter of claim 1 wherein:

the second straight portion has a length of about 2.5 centimeters, the third straight portion has a length of about 1.5 to 2.0 centimeters, and the fourth straight portion has a length of about 2.5 to 3.0 centimeters.

5. The catheter of claim 1 wherein the third straight portion has a length of about 0.5 to 2.0 centimeters.

6. The catheter of claim 1 wherein the fourth straight portion has a length of about 1.5 to 3.0 centimeters.

7. The catheter of claim 1 wherein the sum of the lengths of the fourth straight portion and third straight portion and the radius of curvature of the secondary curved portion is about 3.5 to 6.0 centimeters.