Patent ID: 9693793
Date: 2017-07-04
CPC Classifications: A61B

Claim:
1. An ultrasonic probe having a longitudinal axis, comprising: a probe body portion which extends along the longitudinal axis, and which is configured to transmit an ultrasonic vibration from a proximal direction toward a distal direction; a width dimension decrease portion which is provided on a distal direction side with respect to the probe body portion, and which forms a distal end of the ultrasonic probe, when certain two directions perpendicular to the longitudinal axis and opposite to each other are width directions and when two directions perpendicular to the longitudinal axis and perpendicular to the width directions are thickness directions, a width dimension in the width directions being larger than a thickness dimension in the thickness directions at a proximal end of the width dimension decrease portion, and the width dimension decreasing from the proximal direction toward the distal direction so that a sectional area perpendicular to the longitudinal axis decreases from the proximal direction toward the distal direction; a width dimension increase portion in which the width dimension in the width directions increases and the thickness dimension in the thickness directions decreases at the same time from the proximal direction toward the distal direction; and an intermediary portion in which the width dimension increase portion is provided, and which is continuous between the probe body portion and the width dimension decrease portion in longitudinal directions parallel to the longitudinal axis, the sectional area perpendicular to the longitudinal axis being kept uniform in a given range or decreasing from the proximal direction toward the distal direction in the intermediary portion, and decreasing at a lower decrease rate from the proximal direction toward the distal direction in the intermediary portion than in the width dimension decrease portion.