Balloon catheter devices with drug delivery extensions
AssigneeBoston Scientific Scimed, Inc.
InventorJan Weber
Life of this patent
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Abstract
A medical device is provided for dilatation of a vessel and delivery of a therapeutic agent to a wall of the vessel. The medical device comprises a catheter, a balloon located at a distal end of the catheter, and a drug delivery extension. The drug delivery extension is configured to extend beyond an outer surface of the balloon when the balloon is in an expanded configuration in order to deliver the therapeutic agent to an area beyond the outer surface of the balloon. The drug delivery extension may be one or more tubes, elongate members and/or expandable structures. The drug delivery extension may include a sheath for drug delivery.
Claims20
A medical device for dilatation of a vessel and delivery of a therapeutic agent to a wall of the vessel, the medical device comprising:
- a catheter;
- a balloon located at a distal end of the catheter, the balloon having a collapsed configuration and an expanded configuration, the balloon having an outer surface configured to press against the wall of the vessel when the balloon is in its expanded configuration for dilatation of a constriction in the vessel;
- and
- a drug delivery extension configured to extend beyond the outer surface of the balloon when the balloon is in its expanded configuration in order to deliver the therapeutic agent to an area beyond the outer surface of the balloon;
- wherein when the drug delivery extension is extended, the drug delivery extension extends in a direction generally parallel to a longitudinal axis of the balloon, at least one of distally from a distal end of the balloon and proximally from a proximal end of the balloon.
A method for dilatation of a vessel and delivery of a therapeutic agent to a wall of the vessel, the method comprising:
- using a medical device comprising:
- a catheter;
- a balloon located at a distal end of the catheter, the balloon having a collapsed configuration and an expanded configuration, the balloon having an outer surface configured to press against the wall of the vessel when the balloon is expanded to its expanded configuration for dilatation of a constriction in the vessel;
- and
- a drug delivery extension configured to extend beyond the outer surface of the balloon when the balloon is in its expanded configuration in order to deliver the therapeutic agent to an area beyond the outer surface of the balloon;
- delivering the balloon to the constriction in the vessel;
- expanding the balloon from its collapsed configuration to its expanded configuration such that the outer surface of the balloon presses against the wall of the vessel for dilatation of the constriction;
- and
- deploying the drug delivery extension to deliver the therapeutic agent to the area beyond the outer surface of the balloon;
- wherein when the drug delivery extension is deployed, the drug delivery extension extends in a direction generally parallel to a longitudinal axis of the balloon, at least one of distally from a distal end of the balloon and proximally from a proximal end of the balloon.
A medical device for dilatation of a vessel and delivery of a therapeutic agent to a wall of the vessel, the medical device comprising:
- a catheter;
- a balloon located at a distal end of the catheter, the balloon having a collapsed configuration and an expanded configuration;
- and
- a drug delivery extension attached to the balloon, the drug delivery extension having an undeployed configuration and a deployed configuration;
- wherein the drug delivery extension in its deployed configuration extends beyond an outer surface of the balloon;
- wherein the drug delivery extension comprises an expandable structure having a collapsed configuration and an expanded configuration;
- wherein when the expandable structure is in its expanded configuration, the expandable structure extends beyond the outer surface of the balloon in order to deliver the therapeutic agent to an area beyond the outer surface of the balloon;
- wherein the medical device further comprises a compression reservoir;
- wherein the compression reservoir is compressed to a compressed condition when the balloon is expanded to its expanded configuration and the outer surface of the balloon presses against the wall of the vessel;
- and
- wherein compression of the compression reservoir to its compressed condition causes the expandable structure to expand from its collapsed configuration to its expanded configuration.
Dependencies are inferred from the claim text.