Tri-fold balloon for dilatation catheter and related method

Details Tri-fold balloon for dilatation catheter and related method Tri-fold balloon for dilatation catheter and related method

1993-11-10

1994-09-27

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

606194, 264DIG41, 264573, 264523, A61M 2900

Patent

active

053503619

ABSTRACT:
A tri-fold dilatation catheter balloon and a method for preparing the same. The disclosed balloon has a tri-fold configuration in which the longitudinal creases defined by three flaps of the balloon are softened to ensure symmetrical deflation of the balloon into its tri-fold form. The tri-fold configuration initially imparted to the balloon by drawing the balloon into an longitudinal interstitial channel defined by three substantially cylindrical pins arranged in a pyramid-type stack. While the balloon is secured within this channel, negative pressure is applied to an inflation lumen of the balloon to deflate the balloon. Negative pressure is maintained on the inflation lumen as the balloon is withdrawn from the interstitial channel, and continues to be maintained while the creases defined by the three tri-fold flaps are heated with a longitudinal heating element. This softens the balloon material in longitudinal creases, so that the same creases will tend form whenever the balloon is deflated. This enhances the reliabilty of symmetrical deflation of the balloon.

REFERENCES:
patent: 4762129 (1988-08-01), Bonzel
patent: B14762129 (1991-07-01), Bonzel
patent: 5040548 (1991-08-01), Yock
patent: 5061273 (1991-10-01), Yock
patent: 5087246 (1992-02-01), Smith
patent: 5108415 (1992-04-01), Pinchuk et al.
patent: 5147302 (1992-09-01), Euteneuer et al.
patent: 5226887 (1993-07-01), Farr et al.
patent: 5250069 (1993-10-01), Nobuyoshi et al.

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