Surgery – Instruments – Cyrogenic application
Reexamination Certificate
2004-01-07
2008-11-11
Cohen, Lee S (Department: 3739)
Surgery
Instruments
Cyrogenic application
C606S022000, C606S023000, C600S374000, C600S381000, C607S105000, C607S113000
Reexamination Certificate
active
07449018
ABSTRACT:
An enhanced method and device are provided to inhibit or reduce restenosis following angioplasty or stent placement. A porous balloon-tipped catheter is disposed in the area treated or opened through balloon angioplasty immediately following angioplasty. The balloon, which can have a dual balloon structure, may be delivered through a guiding catheter and over a guidewire already in place. A fluid such as a perfluorocarbon flows into the balloon to freeze the tissue adjacent the balloon, this cooling being associated with reduction of restenosis. A similar catheter may be used to reduce atrial fibrillation by inserting and inflating the porous balloon such that an exterior surface of the balloon, as well as a portion of the cold working fluid, from the microporosity contacts at least a partial circumference of the portion of the pulmonary vein adjacent the left atrium.
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Cohen Lee S
Innercool Therapies, Inc.
Mayer & Williams PC
Wieczorek, Esq. Mark D.
Williams Esq. Karin L.
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