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 an ultrasound transducer having a distal end, said transducer distal end extending coaxially into said catheter chamber, wherein said transducer generates ultrasound waves that induce wave motion in fluid in said chamber to deliver liquid 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.
32 Citations
30 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 an ultrasound transducer having a distal end, said transducer distal end extending coaxially into said catheter chamber, wherein said transducer generates ultrasound waves that induce wave motion in fluid in said chamber to deliver liquid 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, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification