Miniaturized mechanically-steerable ultrasonic probe

Details Miniaturized mechanically-steerable ultrasonic probe Miniaturized mechanically-steerable ultrasonic probe

1988-12-22

1990-11-27

Jaworski, Francis

Surgery

Truss

Pad

1286601, A61B 800

Patent

active

049728393

ABSTRACT:
A miniaturized ultrasonic probe comprises a housing encasing a motor, an ultrasonic transducer mounted for controlled rotation on the motor shaft, and an angular position sensor connected to the shaft. The housing has a radiating dome about the transducer and is sealed and wholly filled with an acoustically-transparent fluid. The dual frequency transducer operatively emits either of two ultrasonic frequency beams from opposed faces of a sandwich-like construction, and the position sensor is implemented using a low mass variable-inductor arrangement. The resulting probe attains unusually rapid accelerations and changes in beam direction with highly accurate control of transducer orientation, all in a miniaturized construction particularly well adapted for operative insertion in a human or animal body cavity or surgical site.

REFERENCES:
patent: 4375818 (1983-03-01), Suwaki et al.
patent: 4391282 (1983-07-01), Ando et al.
patent: 4671292 (1987-06-01), Matzuk
patent: 4744368 (1988-05-01), Young et al.
patent: 4802458 (1989-02-01), Finsterwald et al.
patent: 4817089 (1974-06-01), Eggleton et al.
patent: 4834102 (1989-05-01), Schwarzchild et al.

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