Liquid injection device and medical apparatus

1. A liquid injection device comprising:

an injection unit which injects a liquid;

a liquid supply instrument which supplies the liquid to the injection unit; and

a control unit which controls operation of the injection unit and the liquid supply instrument,

wherein the injection unit includes

a distal end portion where a nozzle for injecting the liquid is formed, and

a body portion in which the distal end portion is removably loaded,

at the distal end portion, a distal end-side memory is provided in which first startup data, which is data related to date and time when the liquid injection device is started up for the first time as the distal end portion is loaded in the body portion, is written, and

the control unit is a control unit which reads and writes the first startup data from and to the distal end-side memory in the distal end portion loaded in the body portion and manages use time of the distal end portion based on the first startup data that is read out.

2. The liquid injection device according to claim 1 , wherein number of times of startup data, which is data related to the number of times the liquid injection device is started up as the distal end portion is loaded, is written in the distal end-side memory, in addition to the first startup data, and

the control unit reads and writes the first startup data and the number of times of startup data from and to the distal end-side memory of the distal end portion and manages the use time of the distal end portion based on the first startup data and the number of times of startup data that are read out.

3. The liquid injection device according to claim 1 , wherein the distal end portion includes a liquid chamber to which the liquid is supplied from the liquid supply instrument and which is connected to the nozzle,

the body portion includes

a piezoelectric element which deforms according to a voltage of an applied drive signal and changes a volume of the liquid chamber, and

a body-side memory in which drive time data, which is data related to a drive time during which the drive signal is applied to the piezoelectric element, is written, and

the control unit is a control unit which

applies the drive signal which reduces the volume of the liquid chamber to the piezoelectric element,

reads and writes the drive time data from and to the body-side memory, and

manages use time of the body portion based on the drive time data read out from the body-side memory.

4. The liquid injection device according to claim 1 , wherein the distal end portion includes a liquid chamber to which the liquid is supplied from the liquid supply instrument and which is connected to the nozzle,

the body portion includes

a piezoelectric element which deforms according to a voltage of an applied drive signal and changes a volume of the liquid chamber, and

a body-side memory in which number of times of driving data, which is data related to the number of times the drive signal is applied to the piezoelectric element, is written, and

the control unit is a control unit which

applies the drive signal which reduces the volume of the liquid chamber to the piezoelectric element,

reads and writes the number of times of driving data from and to the body-side memory, and

manages use time of the body portion based on the number of times of driving data read out from the body-side memory.

5. The liquid injection device according to claim 4 , wherein the number of times of driving data is data related to the number of times of driving and the voltage of the drive signal.

6. A medical apparatus comprising the liquid injection device according to claim 1 .

7. A medical apparatus comprising the liquid injection device according to claim 2 .

8. A medical apparatus comprising the liquid injection device according to claim 3 .

9. A medical apparatus comprising the liquid injection device according to claim 4 .

10. A medical apparatus comprising the liquid injection device according to claim 5 .