BLOOD CHARACTERISTICS EVALUATION APPARATUS, BLOOD CHARACTERISTICS EVALUATION METHOD, AND NON-TRANSITORY COMPUTER READABLE RECORDING MEDIUM

1 . A blood characteristics evaluation apparatus comprising:

processing circuitry configured to:

cause a foaming phenomenon to occur in a blood sample,

measure a foaming state in the blood sample, and

calculate an index indicating a coagulation tendency of the blood sample based on a measurement result of the foaming state in the blood sample.

2 . The blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry

causes a foaming phenomenon to occur in the blood sample and a composite sample in which the blood sample and a blood coagulation related factor are mixed,

measures a foaming state in the blood sample and a foaming state in the composite sample, and

calculates the index based on measurement results of the foaming state in the blood sample and the foaming state in the composite sample.

3 . The blood characteristics evaluation apparatus according to claim 2 , wherein the processing circuitry

causes the blood sample to flow in a first flow path and a second flow path,

causes the blood coagulation related factor to flow in a third flow path, and

causes the foaming phenomenon to occur in each of the blood sample that flows in the first flow path and the composite sample that flows in a fourth path in which the second flow path and the third flow path are merged.

4 . The blood characteristics evaluation apparatus according to claim 3 , the processing circuitry approximately simultaneously measures the foaming state in the blood sample that flows in the first flow path and the foaming state in the composite sample that flows in the fourth flow path.

5 . The blood characteristics evaluation apparatus according to claim 2 , wherein the processing circuitry

causes the blood sample to flow in a first flow path,

causes the blood coagulation related factor to flow in a second flow path, and

generates the foaming phenomenon to occur in each of the blood sample that flows in the first flow path and the composite sample that flows in a third flow path in which the first flow path and the second flow path are merged.

6 . The blood characteristics evaluation apparatus according to claim 5 , wherein the processing circuitry causes the blood coagulation related factor to flow in each of the plurality of second flow paths, and causes the foaming phenomenon to occur in the plurality of composite samples that flows in the third flow path in which the first flow path and the one or more second flow paths are merged.

7 . The blood characteristics evaluation apparatus according to claim 2 , wherein the blood coagulation related factor is heparin.

8 . The blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry causes the foaming phenomenon to occur by applying thermal energy.

9 . The blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry calculates the index based on the measurement result and number of blood cells in the blood sample.

10 . The blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry causes the foaming phenomenon to occur in the blood sample in which the number of blood cells is adjusted to a predetermined value.

11 . The blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry causes the foaming phenomenon to occur in the blood sample that has been stirred.

12 . The blood characteristics evaluation apparatus according to claim 1 ,

the processing circuitry measures the foaming state in the blood sample, and eliminates an outlier from a measurement result of the foaming state, and

the processing circuitry calculates the index based on the measurement result from which the outlier is eliminated.

13 . The blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry displays an error range of the index together with the index.

14 . the blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry measures a bubble size as the foaming state.

15 . The blood characteristics evaluation apparatus according to claim 14 , wherein the processing circuitry measures the bubble size based on one of an image of a region in which the foaming phenomenon has occurred, an amount of transmitted light in the region, and an amount of reflected light from the region.

16 . The blood characteristics evaluation apparatus according to claim 15 , wherein the processing circuitry measures the bubble size based on a temporal change of one of the amount of transmitted light and the amount of reflected light.

17 . The blood characteristics evaluation apparatus according to claim 1 , wherein the processing circuitry measures, as the foaming stats ejection characteristics due to foaming.

18 . A blood characteristics evaluation apparatus comprising:

processing circuitry configured to:

cause a foaming phenomenon to occur in a composite sample in which a blood sample and a blood coagulation related factor are mixed;

measure a foaming state in the composite sample; and

evaluate characteristics of the blood sample based on a measurement result of the foaming state in the composite sample.

19 . The blood characteristics evaluation apparatus according to claim 18 , wherein the processing circuitry calculates, as the evaluation, an index indicating a coagulation tendency of the blood sample.

20 . The blood characteristics evaluation apparatus according to claim 18 , wherein the processing circuitry

causes a foaming phenomenon to occur in the blood sample and the composite sample,

measures the foaming state in the blood sample and the foaming state in the composite sample, and

calculates the evaluation based on measurement results of the foaming state in the blood sample and the foaming state in the composite sample.

21 . A blood characteristics evaluation method comprising:

causing a foaming phenomenon to occur in a blood sample;

measuring a foaming state in the blood sample; and

calculating an index indicating a coagulation tendency of the blood sample based on a measurement result of the foaming state in the blood sample.

22 . A blood characteristics evaluation method comprising:

causing a foaming phenomenon to occur in a composite sample in which a blood sample and a blood coagulation related factor are mixed;

measuring a foaming state in the composite sample; and

evaluating characteristics of the blood sample based on a measurement result of the foaming state in the composite sample.

23 . A non-transitory computer readable recording medium having stored therein a program that causes a computer to perform a process comprising:

causing a foaming phenomenon to occur in a blood sample;

measuring a foaming state in the blood sample; and

calculating an index indicating a coagulation tendency of the blood sample based on a measurement result of the foaming state in the blood sample.

24 . A non-transitory computer readable recording medium having stored therein a program that causes a computer to perform a process comprising:

causing a foaming phenomenon to occur in a composite sample in which a blood sample and a blood coagulation related factor are mixed;

measuring a foaming state in the composite sample; and

evaluating characteristics of the blood sample based on a measurement result of the foaming state in the composite sample.