Biological sample measuring device
View Patent ↗A biological sample measuring device in which a deposited biological sample is introduced into a capillary, a biological sample measuring sensor in which a reagent and the biological sample provided is mounted, and the biological sample is measured. The biological sample measuring device comprises a mounting portion, a voltage application section, and a detection component. The biological sample measuring sensor is mounted to the mounting portion. The voltage application section applies a measurement voltage to a plurality of electrodes disposed along the capillary. The detection component eliminates the effect of seepage of the biological sample by pass-around at the end of the capillary, or the effect whereby the plasma component seeps into the reagent, and detects the degree to which the biological sample is introduced into the capillary, based on the output result for the voltage applied by the voltage application section to the electrodes.
1. A biological sample measuring device comprising:
a mounting portion;
a voltage application section configured to apply a voltage to a plurality of electrodes; and
a controller configured to:
determine an output result based on applying the voltage of the voltage application section to the electrodes,
detect a degree to which a biological sample is introduced into a capillary based on the output result, and
eliminate misdetection of the biological sample due to seepage or pass-around.
2. The biological sample measuring device according to claim 1 , wherein:
the controller is further configured to:
detect an additional deposit of the biological sample,
determine that the capillary contains an insufficient quantity of the biological sample based on the degree to which the biological sample is introduced into the capillary, and
detect that the output result has exceeded a specific threshold after the controller has determined that the capillary contains an insufficient quantity of the biological sample.
3. The biological sample measuring device according to claim 1 , wherein:
the electrodes include:
a first electrode disposed inside the capillary, and
a second electrode disposed closer to an inlet of the capillary than the first electrode in a region of the capillary where a reagent is provided;
the output result is determined based on applying the voltage between the first electrode and the second electrode; and
the controller is further configured to determine whether the capillary is in a properly filled state, or in a state in which pass-around or seepage has occurred, based on a function related to the output result.
4. The biological sample measuring device according to claim 1 , wherein:
the electrodes include:
a first electrode disposed inside the capillary,
a second electrode disposed closer to an inlet of the capillary than the first electrode in a region of the capillary where a reagent is provided, and
a third electrode that is including:
a first portion of the third electrode disposed closer to the inlet of the capillary than the second electrode, and
a second portion of the third electrode disposed between the first and second electrodes;
the output result determined based on alternately applying the voltage between:
the first electrode and the third electrode, and
the first electrode and the second electrode,
the voltage applied for a predetermined length of time to each pair of electrodes; and
the controller is further configured to determine whether the capillary is in a properly filled state, or in a state in which pass-around or seepage has occurred, based on a function related the output result.
5. The biological sample measuring device according to claim 1 , wherein:
the electrodes include:
a first electrode disposed inside the capillary,
a second electrode disposed closer to an inlet of the capillary than the first electrode in a region of the capillary where a reagent is provided, and
a third electrode including:
a first portion of the third electrode disposed closer to the inlet of the capillary than the second electrode, and
a second portion of the third electrode disposed between the first and second electrodes;
the output result is determined based on applying the voltage between the first electrode and the third electrode; and
the controller is further configured to determine whether the capillary is in a properly filled state, or in a state in which pass-around or seepage has occurred, based on a function related to the output result.
6. The biological sample measuring device according to claim 1 , further comprising:
a display section configured to display information related to the biological sample; and
wherein the controller is further configured to:
determine a detection result based on the degree to which the biological sample is introduced into the capillary, and
display, on the display section, an indication recommending an additional deposit of the biological sample based on the detection result.
7. The biological sample measuring device according to claim 1 , further comprising:
a display section configured to display information related to the biological sample,
wherein the controller is further configured to:
determine a detection result based on the degree to which the biological sample is introduced into the capillary, and
display, on the display section, an indication of a measurement error based on the detection result.
8. The biological sample measuring device according to claim 1 , further comprising:
a biological sample measuring sensor including the capillary;
wherein the biological sample measuring sensor is configured to be removably mounted to the mounting portion.
9. The biological sample measuring device according to claim 1 , wherein:
the electrodes include:
a first electrode including a first portion disposed inside the capillary,
a second electrode disposed closer to an inlet of the capillary than the first electrode in a region of the capillary where the reagent is provided, and
a third electrode including a first portion disposed closer to the inlet of the capillary than the second electrode; and
the controller is further configured to determine whether the capillary is in a properly filled state, or in a state in which pass-around or seepage has occurred, based on a function related to the output result.
10. The biological sample measuring device according to claim 9 , wherein:
the output result is determined based on applying the voltage between the first electrode and the second electrode.
11. The biological sample measuring device according to claim 9 , wherein:
the output result is determined based on alternately applying the voltage between:
the first electrode and the third electrode, and
the first electrode and the second electrode.
12. The biological sample measuring device according to claim 9 , wherein:
the third electrode further includes a second portion disposed between the first and second electrodes.
13. The biological sample measuring device according to claim 12 , wherein:
the output result is determined based on applying the voltage between the first electrode and the third electrode.
14. The biological sample measuring device according to claim 12 , wherein:
the output result is determined based on alternately applying the voltage between:
the first electrode and the third electrode, and
the first electrode and the second electrode.
15. The biological sample measuring device according to claim 12 , wherein:
the first electrode further includes a second portion disposed closer to the inlet of the capillary than the first portion of the third electrode.
16. The biological sample measuring device according to claim 15 , wherein:
the output result is determined based on alternately applying the voltage between:
the first portion of the first electrode and the second portion of the third electrode, and
the second portion of the first electrode and the first portion of the third electrode.