Annular array transducer

Details Annular array transducer Annular array transducer

1994-11-02

1996-05-28

Manuel, George

Surgery

Truss

Pad

310367, A61B 800

Patent

active

055201881

ABSTRACT:
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.

REFERENCES:
patent: 4757820 (1988-07-01), Itoh
patent: 4865042 (1989-09-01), Umemura et al.

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