Ultrasonic catheter drug delivery method and device
First Claim
1. A catheter system for ultrasound drug delivery, comprising:
- a catheter having a proximal portion comprising a chamber and a distal end, wherein at least one lumen extends longitudinally from said chamber to said distal end;
at least one fluid source in fluid communication with said chamber and providing at least one fluid; and
an ultrasound transducer having a distal end configured and dimensioned to propagate ultrasound waves through said catheter, wherein said ultrasound waves are propagated by the at least one fluid within at least a portion of said catheter by inducing wave motion in said at least one fluid to deliver fluid and/or ultrasound energy to the catheter distal end.
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Accused Products
Abstract
An ultrasonic catheter drug delivery device comprises an ultrasound transducer to produce ultrasonic waves, which transducer is mechanically attached to a catheter body or chamber. The ultrasonic transducer has a distal tip with a distal radiation surface, and when a therapeutic agent from a fluid source is directed to the catheter body or chamber, the radiation surface creates ultrasonic pressure and delivers liquid and simultaneously ultrasonic energy to a patient'"'"'s vascularity or a selected body lumen. The method applies therapeutic agent and ultrasonic waves to the vascular area, lung or any body lumen without requiring direct contact between ultrasound transducer and body, dissolves blood clots, and stimulates tissue cells.
273 Citations
22 Claims
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1. A catheter system for ultrasound drug delivery, comprising:
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a catheter having a proximal portion comprising a chamber and a distal end, wherein at least one lumen extends longitudinally from said chamber to said distal end;
at least one fluid source in fluid communication with said chamber and providing at least one fluid; and
an ultrasound transducer having a distal end configured and dimensioned to propagate ultrasound waves through said catheter, wherein said ultrasound waves are propagated by the at least one fluid within at least a portion of said catheter by inducing wave motion in said at least one fluid to deliver fluid and/or ultrasound energy to the catheter distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A catheter system for ultrasonically treating an interior area of the body, the system comprising:
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a catheter having at least one lumen;
a transducer having a distal radiation surface configured and dimensioned for coupling with a proximal end of the catheter and for emitting ultrasonic energy therein; and
at least one fluid source for introducing at least one fluid within the proximal end of the catheter, wherein the emitted ultrasonic energy is delivered to the interior area of the body by the at least one fluid through the at least one lumen for treating the interior area of the body with ultrasonic energy. - View Dependent Claims (17, 18, 19)
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20. An internal treatment method comprising the steps of:
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inserting at least a portion of an ultrasound emitting catheter into a body to be treated, wherein said ultrasound catheter includes an ultrasound transducer with a distal radiation end in fluid communication with the catheter distal tip through at least one lumen, said at ultrasound catheter further including a chamber for introducing at least one fluid therein from at least one fluid source;
guiding the catheter to an internal treatment site;
introducing the at least one fluid within said chamber; and
actuating the ultrasound transducer to emit ultrasonic energy for being propagated via the at least one lumen to the treatment site by said at least one fluid. - View Dependent Claims (21, 22)
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Specification