Focus Surgery, Inc.

Focal Surgery

Carl W Hennige

Claudio I Zanelli

Narendra T Sanghvi

Francis J Fry

Edward C Driscoll, Jr

Stan DeMarta

A method of treatment by ultrasound comprises providing a first, ultrasound field intensity-to-voltage transducer sized for insertion into the vicinity of a treatment site and a second ultrasound treatment transducer. The free field intensities created by the second transducer in response to various second transducer exciting signal levels are determined. The first transducer outputs in the free field in response to various second transducer exciting signal levels are also determined. The first transducer is inserted into the vicinity of the treatment site, and the second transducer is positioned to create an ultrasound field at the treatment site. The distance from the second transducer to the first transducer is determined. An exciting signal is applied to the second transducer. The output of the first transducer is determined. The level of the exciting signal applied to the second transducer, the determined distance and the first transducer output are employed to determine the attenuation coefficient of the tissues between the second transducer and the first transducer.

Ultrasound intensity determining method and apparatus

A transducer for use in a localization and therapeutic ultrasound system. The transducer of the present invention includes multiple elements that are driven separately. The elements operate together to focus a continuous wave ultrasound beam at a focal zone that is at a variable distance from the elements. The transducer includes a mechanism to adjust the focal distance so that the focal zone may be moved to multiple depths.

Annular array transducer

A probe for inspecting and treating an internal organ of a patient. The probe includes a tube having a proximal end and a distal end. The tube has a flexible portion near the distal end. A head is coupled to the flexible portion at the distal end of the tube. The head includes a HIFU transducer. The probe also includes a mechanism for positioning the probe responsive to manipulation by a user. The probe may optionally include a direct viewing mechanism for viewing the area adjacent to the head, a ultrasound system for generating ultrasound images of the area adjacent to the head, and a lighting mechanism for illuminating the area adjacent to the head. The probe may be employed as an endoscope for applying HIFU therapy to internal organs of a patient.

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San Jose, CA, United States of America

Carl W Hennige