Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1990-04-25
1991-02-05
Pellegrino, Stephen C.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
606192, A61M 2510
Patent
active
049901397
ABSTRACT:
Disclosed is a catheter for performing balloon angioplasty having multiple independently inflatable/deflatable balloons thereon, each balloon having a different diameter. The balloons are capable of withstanding pressures in excess of 100 psi and are non-elastomeric and imperforate. Also disclosed is a method for performing balloon angioplasty by advancing a balloon catheter of the type disclosed into a stenosis inside a blood vessel, inflating a first balloon to partially dilate the stenosis, advancing a second balloon into the partially dilated stenosis, wherein the diameter of the second balloon is greater than the diameter of the first balloon, and inflating the second balloon to further dilate the stenosis. Also disclosed is a method for performing balloon angioplasty with a catheter of the type disclosed herein, by positioning a first balloon inside a first stenosis in a blood vessel and inflating a first balloon to dilate the first stenosis, and positioning a second balloon inside a second stenosis in a blood vessel and inflating the second balloon to dilate the second stenosis, wherein the diameter of the first balloon is different from the diameter of the second balloon. A third stenosis may be dilated with a third balloon on the catheter in a similar manner, where the third balloon has a diameter different from that of the other two balloons.
REFERENCES:
patent: 3411506 (1968-11-01), Velasco
patent: 4271839 (1981-06-01), Fogarty et al.
patent: 4527549 (1985-07-01), Gabbay
patent: 4630609 (1986-12-01), Chin
patent: 4655746 (1987-04-01), Daniels et al.
Lewis William
Pellegrino Stephen C.
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