Balloon activated forced concentrators for incising stenotic segments
First Claim
1. A device for incising stenotic segments, mountable over an inflatable angioplasty balloon, which comprises:
- at least one elongated flexible panel, said panel having an outer surface, an inner surface, a proximal end and a distal end;
a cutting blade having an edge, said cutting blade mounted on said outer surface of said elongated flexible panel with said edge of said cutting blade projecting away from said outer surface of said elongated flexible panel;
a first circular band attached to said proximal end of each said elongated flexible panel; and
a second circular band attached to said distal end of each said elongated flexible panel, said first circular band and said second circular band being positionable to retain said inner surface of each said elongated flexible panel against said angioplasty balloon.
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Accused Products
Abstract
A balloon activated force concentrator for use in cooperation with an inflatable angioplasty balloon includes at least one elongated flexible panel, an elongated cutting blade mounted on the outside surface of the elongated flexible panel, and an elastic circular band attached to each end of the elongated flexible panel for securing the elongated flexible panel to an angioplasty balloon. Use of this balloon activated force concentrator requires mounting the device on an inflatable angioplasty balloon by inserting the distal end of the angioplasty balloon through one of the circular bands. The balloon activated force concentrator is then advanced over the balloon until the second circular band reaches the distal end of the balloon. At that point, the elasticity of the circular bands straddle the balloon to retain the activated force concentrator securely against the outer surface of the angioplasty balloon.
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Citations
19 Claims
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1. A device for incising stenotic segments, mountable over an inflatable angioplasty balloon, which comprises:
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at least one elongated flexible panel, said panel having an outer surface, an inner surface, a proximal end and a distal end; a cutting blade having an edge, said cutting blade mounted on said outer surface of said elongated flexible panel with said edge of said cutting blade projecting away from said outer surface of said elongated flexible panel; a first circular band attached to said proximal end of each said elongated flexible panel; and a second circular band attached to said distal end of each said elongated flexible panel, said first circular band and said second circular band being positionable to retain said inner surface of each said elongated flexible panel against said angioplasty balloon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A device for incising stenotic segments, comprising:
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a balloon moveable between a collapsed configuration and an inflated configuration; a plurality of elongated flexible panels, each said panel having an outer surface, a proximal end and a distal end; a plurality of cutting means, each said cutting means being firmly attached to said outer surface of a respective said elongated flexible panel; and a retaining means for collectively securing said plurality of elongated flexible panels to said balloon with said cutting means projecting radically away from said balloon and for movement therewith, to incise said stenotic segments when said balloon is in said inflated configuration wherein said retaining means comprises a first circular band attached to said proximal end of each said elongated flexible panel and a second circular band attached to said distal end of each said elongated flexible panel. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for operating a cutting device with an angioplasty balloon to incise and dilate a stenotic segment in a vessel, wherein the cutting device includes a plurality of elongated flexible panels with each panel having a proximal end and a distal end and a cutting blade mounted thereon, and wherein the proximal and distal ends of each flexible panel are respectively attached to a proximal band and a distal band, the method comprising the steps of:
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positioning said proximal band and said distal band of said cutting device to straddle said balloon with said panels retained therebetween against said balloon and with said cutting blades projecting away from said balloon; and inflating said balloon to move said flexible panels and said cutting blades therewith for incising and dilating the stenotic segment as said balloon is inflated.
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Specification