Balloon dilatation catheter having a free core wire

Details Balloon dilatation catheter having a free core wire Balloon dilatation catheter having a free core wire

1993-12-06

1995-08-15

Maglione, Corrine

Surgery

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

Treating material introduced into or removed from body...

606194, A61M 2900

Patent

active

054414849

ABSTRACT:
A non-over-the-wire catheter for use in angioplasty including a core wire which extends distally beyond a distal end of a tubular member. The tubular member defines an interior passage which is in fluid communication with a distal interior passage of a waist tube that extends about the core wire. An inflatable balloon member extends about the core wire and is in fluid communication with the distal interior passage of the waist tube. An axially stiff component is coupled to the balloon member. The axially stiff component permits rotational movement of the core wire relative to the balloon member so that torque applied to the tubular member and conveyed to the core wire is not readily transmitted to the balloon member. A push element associated with the core wire abuts the axially stiff component. The push element prevents longitudinal displacement of the inner sleeve relative to the core wire, which in turn prevents a longitudinal collapse of the balloon member and waist tube when the catheter is advanced through a patient's vascular system.

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