Extendable balloon-on-a-wire catheter, system and treatment proc

Details Extendable balloon-on-a-wire catheter, system and treatment proc Extendable balloon-on-a-wire catheter, system and treatment proc

1993-08-26

1994-08-16

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

606194, 128657, A61M 2900, A61B 600

Patent

active

053383010

ABSTRACT:
An extendable balloon-on-a-wire catheter is provided which includes a telescoping exchange core wire mounted along the inside lumen of the longitudinal tube of the balloon-on-a-wire assembly. In the preferred embodiment, the exchange core wire is mounted within a hypodermic tube secured to the core wire of the balloon-on-a-wire assembly. A multiple component system includes this balloon-on-a-wire assembly together with an over-the-wire catheter which slidably passes over the elongated body of the balloon-on-a-wire assembly. Preferably, the relative sizing of these components of the system is such that the over-the-wire catheter does not pass over the balloon of the balloon-on-a-wire assembly. In a treatment procedure, the balloon-on-a-wire assembly achieves dilation of a lesion or a stenosis, after which it is moved somewhat distally to clear the stenosis. When the over-the-wire catheter is used, it is slidably moved over the balloon-on-a-wire assembly until its treatment location reaches the stenosis. During the procedure, the exchange core wire can be telescopically extended to a length such that the surgeon can readily grasp the balloon-on-a-wire assembly or its exchange core wire during manipulation of the over-the-wire catheter.

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