A blood vessel training device, which is configured to form a blood vessel training system for increasing elasticity of a blood vessel in combination with:
- a tightener including:
- a belt having a length that allows the belt to be wrapped around a predetermined portion of any one of limbs of a subject;
- a fixing member configured to fix the belt under a state in which the belt is wrapped around the predetermined portion of the one of the limbs;
- and
- a gas bladder, which is provided to the belt, and is configured to apply a predetermined tightening pressure to the predetermined portion of the one of the limbs by tightening the predetermined portion of the one of the limbs through loading of a gas inside the gas bladder under a state in which the belt wrapped around the predetermined portion of the one of the limbs is fixed by the fixing member;
- a pressure varying device configured to set a pressure of the gas inside the gas bladder to a desired pressure;
- and
- a pulse wave measuring device configured to measure, in a vicinity of a portion of the one of the limbs at which the tightener is fixed or on a further distal end side of the one of the limbs relative to the portion, a predetermined parameter varying in accordance with a variation of a magnitude of a pulse wave of an artery, and generate pulse wave data on a pulse wave amplitude based on the predetermined parameter,
- the blood vessel training device comprising:
- a control module configured to receive the pulse wave data from the pulse wave measuring device and control the pressure varying device;
- and
- a recording unit configured to record data,
- wherein the control module is configured to execute:
- pre-processing for:
- controlling the pressure varying device so as to cause the pressure varying device to execute a first phase, which is processing including at least changing the pressure of the gas inside the gas bladder so as to pass a range in which the pulse wave amplitude is expected to become maximum;
- performing at least processing for receiving the pulse wave data a plurality of times from the pulse wave measuring device while the first phase is being executed, to thereby identify a pre-maximum pulse wave amplitude, which is a pulse wave amplitude that became maximum while the first phase was being executed, and a maximum pulse wave pressure, which is the pressure of the gas inside the gas bladder at a time at which the pre-maximum pulse wave amplitude occurred;
- and recording the pre-maximum pulse wave amplitude and the maximum pulse wave pressure in the recording unit;
- treatment processing for controlling the pressure varying device so as to cause the pressure varying device to execute a second phase, which is processing for executing a predetermined calculation operation on the maximum pulse wave pressure recorded in the recording unit to obtain a treatment pressure, which is a pressure smaller than the maximum pulse wave pressure, keeping the pressure of the gas inside the gas bladder during a predetermined time period between 1 minute and 15 minutes at such a ratio that a time period in which the pressure of the gas inside the gas bladder is equal to or smaller than the treatment pressure and equal to or larger than 30 mmHg is 50% or larger and a time period in which the pressure of the gas inside the gas bladder is smaller than 30 mmHg is 50% or smaller, and then decreasing the pressure of the gas inside the gas bladder to 30 mmHg or smaller, the treatment processing being executed subsequently to the pre-processing;
- post-processing for:
- controlling the pressure varying device so as to cause the pressure varying device to execute a third phase, which is processing for changing the pressure of the gas inside the gas bladder within at least a range of +10 mmHg of the maximum pulse wave pressure recorded in the recording unit so as to pass the maximum pulse wave pressure, or keeping the pressure of the gas inside the gas bladder within a range equal to or larger than the maximum pulse wave pressure recorded in the recording unit and equal to or smaller than a pressure larger by 20 mmHg than the maximum pulse wave pressure recorded in the recording unit, during a period between a start point, which is a predetermined timing at which 45 seconds have not elapsed from an end of the treatment processing, and an end point, which is a predetermined timing at which at least 100 seconds have elapsed from the end of the treatment processing;
- performing processing for receiving the pulse wave data a plurality of times from the pulse wave measuring device while the third phase is being executed, to thereby identify a post-maximum pulse wave amplitude, which is a pulse wave amplitude that became maximum while the third phase was being executed;
- and recording the post-maximum pulse wave amplitude in the recording unit, the post-processing being executed subsequently to the treatment processing;
- and
- evaluation processing for evaluating a state of the blood vessel of the subject through use of the pre-maximum pulse wave amplitude and the post-maximum pulse wave amplitude that are recorded in the recording unit, the evaluation processing being executed after the post-processing.