ULTRASONIC TREATMENT DEVICE

摘要

An ultrasonic treatment device including, a vibration transmitting portion, an inner surface which defines an internal space, a first tube which extends along the longitudinal axis in an internal space, a path portion which is provided on the inner circumferential side of the first tube, and a first spacer which intervenes between the inner surface and the first tube at a node position of the ultrasonic vibration in a longitudinal axis and which supports the first tube so that the outer circumferential surface of the first tube does not contact the inner surface.

主权项

1. An ultrasonic treatment device comprising:
a vibration transmitting portion which extends along a longitudinal axis and which transmits ultrasonic vibration from a proximal direction to a distal direction; an inner surface which defines an internal space along the longitudinal axis inside the vibration transmitting portion; a first tube which extends along the longitudinal axis in the vibration transmitting portion the internal space; a path portion which is provided on the inner circumferential side of the first tube and through which a suction target to be suctioned passes toward the proximal direction; and a first spacer which intervenes between inside of the vibration transmitting portion the inner surface and an outer circumferential surface of the first tube at a node position of the ultrasonic vibration in a longitudinal axis direction parallel to the longitudinal axis and which supports the first tube so that the outer circumferential surface of the first tube does not contact the inner surface; a second tube disposed inside the first tube, extending along the longitudinal axis, and permitting a suction target to be suctioned toward the proximal direction; a second spacer located off the node position of the ultrasonic vibration where the first spacer is located such that a clearance is formed between an inner circumferential surface of the first tube and an outer circumferential surface of the second tube, and configured to support the second tube in a state where the outer circumferential surface of the second tube is prevented from coming into contact with the inner circumferential surface of the first tube.