Ultrasound assembly for use with light activated drugs
First Claim
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1. A method for treating a subdermal tissue site, comprising:
- providing a catheter for locally delivering a light activated drug to the subdermal tissue site, the catheter including an ultrasound transducer;
placing the catheter into the body near the tissue site;
locally delivering the light activated drug to the tissue site;
producing ultrasound energy from the ultrasound transducer; and
directing the ultrasound energy to the subdermal tissue site following delivery of the light activated drug to the subdermal tissue site to activate at least a portion of the light activated drug.
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Abstract
A kit and method for causing tissue death within a tissue site is disclosed. The kit includes a media with a light activated drug activatable upon exposure to a particular level of ultrasound energy. The kit also includes a catheter with a lumen coupled with a media delivery port through which the light activated drug can be locally delivered to the tissue site. The ultrasound transducer is configured to transmit the level of ultrasound energy which activates the light activated drug with sufficient power that the ultrasound energy can penetrate the tissue site.
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Citations
28 Claims
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1. A method for treating a subdermal tissue site, comprising:
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providing a catheter for locally delivering a light activated drug to the subdermal tissue site, the catheter including an ultrasound transducer;
placing the catheter into the body near the tissue site;
locally delivering the light activated drug to the tissue site;
producing ultrasound energy from the ultrasound transducer; and
directing the ultrasound energy to the subdermal tissue site following delivery of the light activated drug to the subdermal tissue site to activate at least a portion of the light activated drug. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for activating a light activated drug, comprising:
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providing a catheter including an ultrasound transducer;
placing the catheter into the body near the tissue site;
introducing the light activated drug into a patient'"'"'s body, wherein a subdermal tissue site absorbs at least a portion of the light activated drug;
producing ultrasound energy;
directing the ultrasound energy from said ultrasound transducer to the subdermal tissue site including the light activated drug; and
activating at least a portion of the light activated drug in the subdermal selected tissue site. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for preventing restenosis, comprising:
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providing an elongate catheter having a drug delivery lumen and an ultrasound transducer mounted along a distal end portion;
advancing the catheter through a patient'"'"'s vasculature such that the distal end portion is located along a treatment site in a blood vessel;
locally delivering an emulsion containing a light activated drug through the drug delivery lumen to the treatment site; and
directing ultrasound energy from said ultrasound transducer along the treatment site to activate at least a portion of the light activated drug. - View Dependent Claims (26, 27, 28)
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Specification