Short exchange guiding catheter apparatus and method

• US 5,299,575 A
• Filed: 07/23/1992
• Issued: 04/05/1994
• Est. Priority Date: 07/23/1992
• Status: Expired due to Fees

• Current Assignee: Cardiologs Technologies
• Original Assignee: James B. Sandridge
• Inventors: Sandridge, James B.
• Primary Examiner(s): HINDENBURG, MAX F
• Application Number:
  US07/919,048
• Time in Patent Office: 621 Days
• Field of Search: 128/656-658, 128/772, 604/96, 604/165, 606/194
• US Class Current: 600/435
• CPC Class Codes: A61M 2210/125 Heart
• CPC Class Codes: A61M 25/09041 Mechanisms for insertion of guide wires
• CPC Class Codes: A61M 25/104 used for angioplasty

Abstract

A guiding catheter used for coronary angioplasty procedures includes an inflatable bag on the inner wall of the guiding catheter. The guiding catheter directs a guide wire for a balloon catheter to a coronary artery for opening a blockage in the artery. When the inflatable bag is inflated it pinches the guide wire against the inner wall of the guiding catheter. This procedure enables the guide wire to be secured in or near a coronary artery while the balloon catheter is exchanged. A hypotube runs along the inner wall of the guiding catheter from an inflation syringe near the catheter hub to the inflatable bag. Preferably saline solution is injected into the inflatable bag.

Claims

1. A short exchange guiding catheter, comprising:

(a) a guide catheter hub,

(b) an elongated guide catheter connected to the guide hub and forming a guide lumen therein for directing a guide wire extending from the hub through the guide lumen,

(c) a hypotube running along the guide catheter substantially the length of the guide catheter and forming an inflation lumen,

(d) an inflatable balloon within the guide lumen in communication with the inflation lumen, and

(e) inflation means in communication with the inflation lumen for inflating and deflating the balloon.

2. The catheter of claim 1 wherein the inflation balloon is secured along the inner wall of the guide lumen near the end of the guide catheter.

3. The catheter of claim 1 wherein the hypotube is imbedded with the wall of the guide catheter.

4. The catheter of claim 1 wherein the hypotube is secured to the inner wall of the guide lumen.

5. The catheter of claim 1 wherein the guide catheter has an inner core and an outer jacket.

6. The catheter of claim 5 wherein the circumference of the inner core is irregular to form a passageway for the hypotube.

7. The catheter of claim 5 wherein the inner core is channeled to form a passageway for the hypotube.

8. A short exchange guiding catheter for use in exchanging a balloon catheter over a guide wire while securing the guide wire within a lumen of the guiding catheter, comprising:

a tubular member including a hollow inner core forming a guide lumen therein through which the guide wire may be passed, the inner core having an irregular circumference substantially the length of the guiding catheter;

a hypotube disposed longitudinally adjacent the irregular circumference of the inner core substantially the length of guiding catheter;

inflatable means at the distal end of the hypotube; and

inflation means associated with the tubular member and in communication with the hypotube to inflate the inflatable means.

9. A short exchange guiding catheter for use in exchanging a balloon catheter over a guide wire while securing the guide wire within a lumen of the guiding catheter, comprising:

a tubular member including a hollow inner core forming a guide lumen therein through which the guide wire may be passed, the inner core having a longitudinal channel running substantially the length of the guiding catheter;

a hypotube disposed in the channel of the inner core substantially the length of the channel;

inflatable means at the distal end of the hypotube; and

inflation means associated with the tubular member and in communication with the hypotube to inflate the inflatable means.

10. A short exchange guiding catheter for use in exchanging a balloon catheter over a guide wire while securing the guide wire within a lumen of the guiding catheter, comprising:

a hollow tubular member forming a guide lumen therein through which the guide wire may be passed;

a passageway formed in a channel within the wall of the tubular member, the passageway running along the tubular member substantially the length of the guiding catheter;

inflatable means affixed to the inner wall of the tubular member at the distal end of the passageway, the inflatable means communicating with the passageway by an outlet running through the inner wall between the passageway and the inflatable means; and

inflation means associated with the tubular member and in communication with the passageway to inflate the inflatable means.