Intravascular dilation catheter

Details Intravascular dilation catheter Intravascular dilation catheter

1994-07-12

1999-07-13

McDermott, Corrine M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

606192, 606194, A61M 2900

Patent

active

059219572

ABSTRACT:
A balloon dilation catheter which has a long shaft and an inflatable balloon connected to its distal end. The shaft includes a guide wire lumen which has an inner diameter that is substantially larger than the guide wire diameter used in the procedure. An atraumatic tip is connected to the distal end of the inflatable balloon and includes an aperture which the guide wire passes through. The diameter of the aperture remains constant but is substantially less than the inner diameter of the guide wire lumen and matches the maximum diameter of the guide wire used in the procedure. The atraumatic tip minimizes the potential for vascular damage and eliminates the need to change catheters or guide wires and thus reduces the time and cost of the PTA procedure. The tip also includes holes which allow for dye injection and pressure measurement while the guide wire extends through the aperture. Alternatively, the aperture may be compliant such that it can expand or contract to accommodate guide wires of different diameters. The compliant tip minimizes the circumferencial ledge between the distal end of the catheter and the guide wire and thereby minimizes the potential for vascular damage.

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"Balloon Catheters and Systems for Transluminal Angioplasty," Medi-tech, Inc., 16 pgs.

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