Ultrasonic probe for use in ultrasonic endoscope

Details Ultrasonic probe for use in ultrasonic endoscope Ultrasonic probe for use in ultrasonic endoscope

1989-05-11

1990-12-04

Jaworski, Francis

Surgery

Truss

Pad

A61B 812

Patent

active

049745905

ABSTRACT:
An ultrasonic probe for use in the ultrasonic endoscope including a damping layer arranged on a rear surface of an ultrasonic vibrating element for absorbing an undesired ultrasonic wave emitted from the rear surface of the vibrating element, an insulating layer and a conductive housing. A matching coil for improving the efficiency of the vibration of the ultrasonic vibrating element is formed as an air-core type and is embedded within the damping layer or the insulating layer such that the undesired ultrasonic wave is passed through a hollow central space of the air-core type matching coil and is effectively absorbed by the damping layer, so that the damping function of the damping layer is not affected by the matching coil.

REFERENCES:
patent: 4819652 (1989-04-01), Micco
patent: 4834102 (1989-05-01), Schwarzchild et al.

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