| 摘要 |
The present invention relates to an ultrasonic probe comprising a group of piezoelectric elements consisting of a plurality of piezoelectric elements of a narrow card shape arrayed in a long-axis direction thereof and a rotational mechanism that rotates and oscillates said group of piezoelectric elements to the left and right in a short-axis direction thereof about the center of said long-axis direction; wherein said rotational mechanism is provided with a first bevel gear having teeth in at least an arc shape, a second bevel gear meshing with said first bevel gear and rotating in the horizontal direction, and a drive motor that rotates said second bevel gear; the rotational axis of said second bevel gear and the rotational axis of said drive motor are linked by a pulley linkage using a belt; and also at least one of said first bevel gear and said second bevel gear is made of a synthetic resin. This ensures that the generation of metallic noise is suppressed, thus removing a source of discomfort, particularly to patients.
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