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Purpose <p>This study aimed to evaluate the blood-sampling performance of an automatic fingertip blood-sampling system with a fingertip vessel-puncture function (FBS-FV) and to examine the relationship between sampled blood volume and fingertip blood-vessel image features.</p> Methods <p>To obtain a consistent blood volume for testing, the FBS-FV selects and punctures near a large blood based on fingertip blood-vessel imaging and promotes bleeding by alternately pressing and releasing the fingertip. A blood-sampling experiment was conducted with 18 participants (men and women in their 20 to 60&#xa0;s). Puncture accuracy, blood volume, and image features (relative brightness at the puncture position V and brightness change due to compression C) were analyzed. Multiple regression was applied to assess the predictive value of V and C for blood volume.</p> Results <p>(1) The deviation between the target and actual puncture positions was less than 1 mm, indicating high accuracy. (2) The proportion of blood samples obtained using the FBS-FV that exceeded the target volume (650&#xa0;μL) was 42%, which was lower than in a previous experiment where the puncture position selected by the FBS-FV was manually punctured and blood was sampled. (3) Multiple regression analysis using image features V and C yielded coefficients of determination of 0.64 and 0.41 for high- and low-volume groups, respectively, suggesting that the possibility of predicting blood volume using these variables.</p> Conclusion <p>The FBS-FV demonstrated precise puncture performance and potential for predicting blood volume using image features. Further optimization of the FBS-FV’s compression control might improve the consistency of blood sampling.</p>

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Evaluation of Blood-Sampling Performance of Automatic Fingertip-Blood-Sampling System and Correlation Between Fingertip-Blood-Vessel Image and Blood-Sampling Volume

  • 期刊论文

  • 发表日期：

    2025年12月15日

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  • Takashi Irie,
  • Kei Takenaka,
  • Sakuichiro Adachi,
  • Taku Sakazume,
  • Yuji Oyamada,
  • Hiroki Doi,
  • Taku Kato,
  • Hiroyasu Ito

摘要

Purpose

This study aimed to evaluate the blood-sampling performance of an automatic fingertip blood-sampling system with a fingertip vessel-puncture function (FBS-FV) and to examine the relationship between sampled blood volume and fingertip blood-vessel image features.

Methods

To obtain a consistent blood volume for testing, the FBS-FV selects and punctures near a large blood based on fingertip blood-vessel imaging and promotes bleeding by alternately pressing and releasing the fingertip. A blood-sampling experiment was conducted with 18 participants (men and women in their 20 to 60 s). Puncture accuracy, blood volume, and image features (relative brightness at the puncture position V and brightness change due to compression C) were analyzed. Multiple regression was applied to assess the predictive value of V and C for blood volume.

Results

(1) The deviation between the target and actual puncture positions was less than 1 mm, indicating high accuracy. (2) The proportion of blood samples obtained using the FBS-FV that exceeded the target volume (650 μL) was 42%, which was lower than in a previous experiment where the puncture position selected by the FBS-FV was manually punctured and blood was sampled. (3) Multiple regression analysis using image features V and C yielded coefficients of determination of 0.64 and 0.41 for high- and low-volume groups, respectively, suggesting that the possibility of predicting blood volume using these variables.

Conclusion

The FBS-FV demonstrated precise puncture performance and potential for predicting blood volume using image features. Further optimization of the FBS-FV’s compression control might improve the consistency of blood sampling.