Controlled high efficiency lesion formation using high...

Details Controlled high efficiency lesion formation using high... Controlled high efficiency lesion formation using high...

2003-08-04

2008-12-30

Winakur, Eric F (Department: 3768)

Surgery: kinesitherapy

Kinesitherapy

Ultrasonic

C601S002000

Reexamination Certificate

active

07470241

ABSTRACT:
An ultrasound system used for both imaging and delivery high intensity ultrasound energy therapy to treatment sites and a method for treating tumors and other undesired tissue within a patient's body with an ultrasound device. The ultrasound device has an ultrasound transducer array disposed on a distal end of an elongate, relatively thin shaft. In one form of the invention, the transducer array is disposed within a liquid-filled elastomeric material that more effectively couples ultrasound energy into the tumor, that is directly contacted with the device. Using the device in a continuous wave mode, a necrotic zone of tissue having a desired size and shape (e.g., a necrotic volume selected to interrupt a blood supply to a tumor) can be created by controlling at least one of the f-number, duration, intensity, and direction of the ultrasound energy administered. This method speeds the therapy and avoids continuously pausing to enable intervening normal tissue to cool.

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