Ultrasonic treatment apparatus
AssigneeOlympus Corporation
InventorsYoshihiro Tsubuku, Minoru Kawasaki
Life of this patent
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Abstract
An ultrasonic treatment apparatus includes a movement unit moving in accordance with at least one of an acting state of a load to a treatment section from a jaw and an opening angle of the jaw relative to the treatment section, a movement detector detecting a moving state of the movement unit, and a peak detecting section detecting a target peak of an ultrasonic impedance value. The ultrasonic treatment apparatus includes a control section controlling the peak detecting section to a detection disallowed state where a detection of the target peak is not executed when the movement unit is not placed within a prescribed range based on a detection result in the movement detector.
Claims12
An ultrasonic treatment apparatus comprising:
- an electric power source configured to output an electric power;
- an ultrasonic transducer configured to generate an ultrasonic vibration by the electric power from the electric power source;
- a probe having a distal portion, the ultrasonic vibration generated in the ultrasonic transducer being configured to be transmitted to the distal portion of the probe;
- a jaw that is openable and closable relative to the distal portion of the probe;
- a movement member configured to move when the jaw is opened or closed relative to the distal portion of the probe;
- a processor or a logic circuit configured to:
- execute an acquisition of information related to a movement of the movement member;
- execute an acquisition of an ultrasonic impedance value of the ultrasonic transducer, the ultrasonic impedance value being acquired based on the electric power supplied from the electric power source to the ultrasonic transducer;
- execute a detection of a peak of the ultrasonic impedance value based on an acquisition result of changes with time of the ultrasonic impedance value, the peak being a point at which the ultrasonic impedance value changes from a state where the ultrasonic impedance value increases with time to a state where the ultrasonic impedance value decreases with time;
- switch between a disallowed state, where a detection of the peak is not executed, and an allowed state, where a detection of the peak is executed, based on an acquisition result of the movement of the movement member;
- and
- execute, when the peak is detected in the allowed state, one of stopping or decreasing an output of the electric power to the ultrasonic transducer and notifying that the peak of the ultrasonic impedance value has been detected.
The ultrasonic treatment apparatus according to claim wherein
- the processor or the logic circuit is configured to detect a point at which a gradually decreasing start of the ultrasonic impedance value starts on the basis of the acquisition result of the changes with time of the ultrasonic impedance value;
- the ultrasonic impedance value at the detected point is a held value;
- and
- a variation with time of the ultrasonic impedance value after the detected point is judged to determine whether or not:
- (i) the ultrasonic impedance value after the detected point, relative to the held value, is more than a predetermined variation, and (ii) the ultrasonic impedance value after the detected point is less than a reference value, thereby judging whether or not the held value is the peak of a detection target.
Dependencies are inferred from the claim text.