Patent ID: 11903603
Assignee: OLYMPUS CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  B  G  H | IPC A  B  G  H

Claim 0:
1. An ultrasound transducer comprising:
an ultrasonic vibrator including a piezoelectric device configured to generate ultrasonic vibration from supplied electric energy along a longitudinal axis;
a proximal end block arranged on a proximal end side of the ultrasonic vibrator along the longitudinal axis; and
a distal end block arranged on a distal end side of the ultrasonic vibrator opposite to the proximal end side, the distal end block including, sequentially in a direction from a proximal end to a distal end of the distal end block along the longitudinal axis:
a first portion adjacent to the piezoelectric device, the first portion including a supported portion;
a second portion adjacent to the first portion; and
a third portion adjacent to the second portion, the third portion having a cross-sectional area perpendicular to the longitudinal axis that differs from a cross-sectional area of the second portion perpendicular to the longitudinal axis,

wherein:
the distal end block is configured such that a position of a boundary between the second portion and the third portion corresponds to or substantially corresponds to an antinode of the ultrasonic vibration in a state in which the piezoelectric device generates the ultrasonic vibration, and the ultrasonic vibration is propagated to the proximal end block, the first portion, the second portion, and the third portion, and
a resonance frequency of the ultrasonic vibration depends on a position of the boundary between the second portion and the third portion under a condition that a distance from the supported portion to a distal end of the third portion along the longitudinal axis is a predetermined length.