Multi-function dilatation catheter
First Claim
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1. For use in percutaneously positioning in a stenotic region of an artery and treatment of the stenosis, a multi-function catheter comprising:
- an elongated catheter body having an outer surface, a proximal end, a distal end and an inner lumen, said catheter body having at least a first perfusion aperture at a position near said distal end, and a first inflation aperture proximally spaced a first distance from said first perfusion aperture;
an elongated outer body coaxially positioned along said elongated catheter body and having an inner lumen with an inner surface slidably engaging said outer surface, said elongated outer body having a second perfusion aperture positioned for fluid-flow cooperation with said first perfusion aperture when said elongated outer body is in a first relative position with said elongated catheter body, and a second inflation aperture proximately spaced a second distance from said second perfusion aperture, said second distance being different than said first distance, said second inflation aperture positioned for fluid-flow cooperation with said first inflation aperture when said elongated outer body is in a second relative position with said elongated catheter body; and
an inflatable balloon structure having a proximal end sealed proximally of said second inflation aperture and having a distal end sealed proximally of said first perfusion aperture and said second perfusion aperture,whereby inflation fluid can be applied through said lumen of said elongated catheter body to inflate said inflatable balloon structure when said first inflation aperture is positioned in fluid-flow cooperation alignment with said second inflation aperture and whereby perfusion fluid can be applied through said lumen to perfuse fluid distally of said inflatable balloon structure when said first perfusion aperture is positioned in fluid-flow cooperation alignment with said second perfusion aperture.
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Abstract
An improved multi-function catheter structure having an inflatable balloon structure at its distal end, to selectively occlude a vascular lumen, provide antegrade perfusion liquid distally of the inflatable balloon, and provide retrograde perfusion proximally of the inflatable balloon is described.
105 Citations
30 Claims
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1. For use in percutaneously positioning in a stenotic region of an artery and treatment of the stenosis, a multi-function catheter comprising:
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an elongated catheter body having an outer surface, a proximal end, a distal end and an inner lumen, said catheter body having at least a first perfusion aperture at a position near said distal end, and a first inflation aperture proximally spaced a first distance from said first perfusion aperture; an elongated outer body coaxially positioned along said elongated catheter body and having an inner lumen with an inner surface slidably engaging said outer surface, said elongated outer body having a second perfusion aperture positioned for fluid-flow cooperation with said first perfusion aperture when said elongated outer body is in a first relative position with said elongated catheter body, and a second inflation aperture proximately spaced a second distance from said second perfusion aperture, said second distance being different than said first distance, said second inflation aperture positioned for fluid-flow cooperation with said first inflation aperture when said elongated outer body is in a second relative position with said elongated catheter body; and an inflatable balloon structure having a proximal end sealed proximally of said second inflation aperture and having a distal end sealed proximally of said first perfusion aperture and said second perfusion aperture, whereby inflation fluid can be applied through said lumen of said elongated catheter body to inflate said inflatable balloon structure when said first inflation aperture is positioned in fluid-flow cooperation alignment with said second inflation aperture and whereby perfusion fluid can be applied through said lumen to perfuse fluid distally of said inflatable balloon structure when said first perfusion aperture is positioned in fluid-flow cooperation alignment with said second perfusion aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. For use in percutaneous positioning in a stenotic region of an artery and treatment of the stenosis, a multi-function catheter comprising:
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catheter means having a first plurality of apertures, a proximal end, a distal end, and a longitudinal lumen, said catheter means for carrying selected fluids; outer body means for slidably encasing said catheter means, said outer body means having a distal end, a proximal end, and a second plurality of apertures; inflatable occlusion means mounted on said outer body means for occluding a vascular lumen when inflated; inflation means for passing inflation fluid through said lumen to inflate said inflatable occlusion means when first selected ones of said first and said second plurality of apertures are in a first relative fluid-flow position; and perfusion means for passing perfusion fluid through said lumen to provide said perfusion fluid distally of said inflatable balloon means when second selected ones of said first and second plurality of apertures are in a second relative fluid-flow position. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A multi-function catheter comprising:
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an elongated catheter having a first outer surface, a proximal end, a distal end and an inner lumen, said elongated catheter including a first plurality of spaced-apart apertures in proximity to its distal end; an elongated outer body coaxially positioned along said elongated catheter and having a second outer surface and an inner surface in slidable contact with said first outer surface, said elongated outer body having a second plurality of spaced-apart apertures, wherein selected ones of said first plurality of spaced-apart apertures are arranged to cooperate with like selected ones of said plurality of spaced-apart apertures to provide selectable fluid-flow positioned from said inner lumen through said elongated outer body; and an inflatable balloon structure having a proximal end and distal end sealed to said second outer surface. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. The method of removing stenosis from an artery utilizing a multi-functional, percutaneously inserted catheter having an elongated catheter with an inner lumen, an elongated outer body coaxially aligned and in slidable contact with the elongated catheter, an inflatable balloon to occlude the artery, the elongated catheter and the elongated outer body having a plurality of spaced-apart apertures arranged to form a set of inflation apertures, a set of perfusion apertures and a set of retrograde perfusion apertures, the method comprising:
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aligning the set of inflation apertures and applying inflation fluid to the inflatable balloon from the inner lumen through the set of inflation apertures; aligning the set of perfusion apertures and applying perfusion fluid from the inner lumen through the set of perfusion apertures to the artery lumen distally from the inflated balloon; removing the stenotic material; and aligning the set of retrograde perfusion apertures and applying retrograde perfusion fluid from the inner lumen to the artery lumen proximally from the inflated balloon. - View Dependent Claims (30)
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Specification