Low profile perfusion catheter
First Claim
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1. A drug delivery catheter, comprising:
- an elongate, flexible tubular body;
an inflatable drug delivery balloon on the tubular body;
at least one influent port on the tubular body on a first side of the balloon;
at least one effluent port on the tubular body on a second side of the balloon, said influent and effluent ports in fluid communication with each other by way of a central lumen through the balloon; and
an axially movable support within the central lumen, said support movable from a first, proximal position to a second, distal position, wherein at least a portion of the central lumen has a first inside cross-sectional flow area when the support is in the proximal position and a second, larger inside cross-sectional flow area when the support is in the distal position.
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Abstract
Disclosed is a Low Profile Perfusion Catheter, for use in coronary angioplasty applications. Preferably, the catheter is provided with an inflatable dilatation balloon, and a perfusion lumen extending therethrough. The diameter of the perfusion lumen is enlargable from a first, reduced diameter to a second, enlarged diameter. In one embodiment, an axially movable tubular support is movable within the lumen from a proximal, insertion position to a distal perfusion position. In another embodiment, the support is radially expandable. In a further embodiment, a porus drug delivery balloon is provided.
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Citations
13 Claims
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1. A drug delivery catheter, comprising:
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an elongate, flexible tubular body; an inflatable drug delivery balloon on the tubular body; at least one influent port on the tubular body on a first side of the balloon; at least one effluent port on the tubular body on a second side of the balloon, said influent and effluent ports in fluid communication with each other by way of a central lumen through the balloon; and an axially movable support within the central lumen, said support movable from a first, proximal position to a second, distal position, wherein at least a portion of the central lumen has a first inside cross-sectional flow area when the support is in the proximal position and a second, larger inside cross-sectional flow area when the support is in the distal position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A catheter, comprising:
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an elongate, flexible, tubular body; a drug delivery balloon on the tubular body; at least one influent port on the tubular body on a first side of the balloon; at least one effluent port on the tubular body on a second side of the balloon, said first and second ports in fluid communication with each other by way of a central lumen through the balloon; and a movable support within the central lumen, said support movable from a first, reduced diameter to a second, enlarged diameter. - View Dependent Claims (10, 11, 12)
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13. A drug delivery, perfusion and dilatation catheter, comprising:
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an elongate, flexible tubular body; an inflatable dilatation balloon on the tubular body; a drug delivery balloon on the tubular body, disposed about the dilatation balloon; at least one influent port on the tubular body on a first side of the dilatation balloon; at least one effluent port on the tubular body on a second side of the dilatation balloon, said influent and effluent ports in fluid communication with each other by way of a central lumen through the balloon; and a movable support within the central lumen, said support movable from a first position in which the central lumen has a, reduced flow capacity to a second position in which the central lumen has an enlarged flow capacity.
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Specification