Creare, Incorporated

David B Kynor

Robert Kline-Schoder

Marc Kenton

Shinzo Onishi

An apparatus for locating a magnet and/or determining the orientation of the apparatus relative to the magnet. In one embodiment, the apparatus includes a multi-axis magnetic field sensor movable in a reciprocating manner so as to permit sensor readings at multiple spaced locations. In another embodiment, the apparatus includes a plurality of multi-axis magnetic field sensors arrayed along a straight line. The apparatus may be used in a number of medical and other applications, including tissue resection, tracking movement of a medical device in a body cavity and tracking movement of an internal organ.

Magnet locating apparatus and method of locating a magnet using such apparatus

An ultrasonic imaging system capable of transmitting and receiving ultrasound over a wide frequency range, i.e., 500 KHz-300 MHz. Ultrasound may be transmitted from a single transducer array at multiple frequencies simultaneously or sequentially via separate, acoustically isolated transducer elements, each having a unique resonant frequency. Signal-to-noise ratio may be enhanced through use of multiple piezoelectric layer transmit transducer elements and single piezoelectric layer receive transducer elements, both on a single transducer array. Aspect ratios approaching unity for transducer elements of the array may be obtained, which can be used to reduce grating lobes. Sparsely populated transducer arrays are included in the imaging system. Methods of ultrasound imaging and ultrasound therapy obtainable with the present imaging system are included in the invention.

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Sharon, VT, United States of America

David B Kynor