Ultrasonic treatment system

1. An ultrasonic treatment system comprising:

a vibrating body including:

an ultrasonic generator configured to generate an ultrasonic vibration when supplied with an electric current; and

an ultrasonic transmitting portion configured to transmit the generated ultrasonic vibration;

a memory configured to store: (i) an elapse of time since a production of the vibrating body, and (ii) a number of thermal processes by sterilization of the vibrating body; and

a processor operatively coupled to the memory, the processor programmed to:

calculate a relation between: (i) an amplitude of the vibrating body when the ultrasonic vibration is generated, and (ii) the electric current to be supplied to the ultrasonic generator, based on both the elapse of time and the number of thermal processes;

set the electric current to be supplied to the ultrasonic generator to an adaptive current value that controls the amplitude of the vibrating body to be a target amplitude, based on the calculated relation between the amplitude of the vibrating body and the electric current; and

control a supply of the electric current to the ultrasonic generator in order to supply the electric current having the adaptive current value.

2. The ultrasonic treatment system according to claim 1 , wherein the processor is programmed to:

calculate: (i) a temporary amplitude based on both the elapse of time and the number of thermal processes, the temporary amplitude being the amplitude of the vibrating body when the electric current having a reference current value is supplied, and (ii) an amplitude change ratio of the temporary amplitude to the target amplitude; and

set the adaptive current value of the electric current based on the amplitude change ratio.

3. The ultrasonic treatment system according to claim 2 , wherein when an initial condition is the elapse of time is zero and the number of thermal processes is zero, the processor is programmed to calculate the temporary amplitude and the amplitude change ratio based on the reference current value being a current value of the electric current that controls the amplitude of the vibrating body in the initial condition to be the target amplitude.

4. The ultrasonic treatment system according to claim 3 , wherein the processor is programmed to:

calculate the temporary amplitude and the amplitude change ratio based on a relational expression in which the elapse of time and the number of thermal processes are parameters such that the temporary amplitude is greater than the target amplitude; and

set the adaptive current value lower than the reference current value based on the amplitude change ratio.

5. The ultrasonic treatment system according to claim 1 , wherein:

the vibrating body includes a plurality of vibrating bodies, each vibrating body of the plurality of vibrating bodies having a different serial number;

the processor is electrically connected to the ultrasonic generator of one of the plurality of vibrating bodies; and

the processor is programmed to:

detect the serial number of the one of the plurality of vibrating bodies in which the ultrasonic generator is connected to the processor; and

calculate a relation of the one of the plurality of vibrating bodies having the detected serial number, the relation being between the amplitude of the ultrasonic vibration in the one of the plurality of vibrating bodies and the electric current, based on both the elapse of time and the number of thermal processes.

6. The ultrasonic treatment system according to claim 1 , wherein:

the memory stores a reference date-and-time; and

the processor is programmed to:

increase the number of thermal processes by one when a predetermined time or more has elapsed from the reference date-and-time in a setting to the adaptive current value; and

update the reference date-and-time at a date-and-time at which: (i) the electric current is supplied, and (ii) the number of thermal processes is increased.

7. The ultrasonic treatment system according to claim 6 , wherein:

the memory stores a supply number of the electric current to the ultrasonic generator; and

the processor is programmed to:

increase the number of thermal processes by one when: (i) the predetermined time or more has not elapsed from the reference date-and-time, and (ii) the supply number of the electric current is more than a predetermined number in the setting to the adaptive current value; and

reset the supply number of the electric current to zero when the number of thermal processes is increased.

8. The ultrasonic treatment system according to claim 7 , wherein when the number of thermal processes is increased in the setting to the adaptive current value, the processor is programmed to use the increased number of thermal processes to calculate the relation between the amplitude of the ultrasonic vibration in the vibrating body and the electric current, based on both the elapse of time and the number of thermal processes.

9. The ultrasonic treatment system according to claim 1 , wherein:

the vibrating body extends along a longitudinal axis;

the ultrasonic generator is provided in a proximal portion of the vibrating body;

the vibrating body includes a treatment portion in a distal portion; and

the ultrasonic transmitting portion is configured to transmit the ultrasonic vibration from a proximal direction to a distal direction along the longitudinal axis.