Low profile catheter for increasing lumen size of a blood vessel

Details Low profile catheter for increasing lumen size of a blood vessel Low profile catheter for increasing lumen size of a blood vessel

1990-09-17

1993-03-23

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604 96, A61M 2500

Patent

active

051959895

ABSTRACT:
A low profile catheter for increasing lumen size of a blood vessel includes a catheter shaft which carries an inflatable balloon at its distal end. A guide wire is positioned in the catheter shaft to extend beyond the balloon, and the guide wire defines a keyed portion having a cross-sectional shape which is other than round. A keyed coupling number is carried by the catheter shaft and coupled to the keyed portion of the guide wire to transmit torque from the catheter shaft to the guide wire while permitting relative axial movement between the catheter shaft and the guide wire. Alternately, wound coil springs are mounted to the catheter shaft by a spyder. The coil springs seize the guide wire in response to rotation, but allow longitudinal movement of the guide wire in the absence of rotation.

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