Sensing Performance Evaluation of a Novel Polyvinylidene Fluoride Sensor in Coronary Rotational Atherectomy

Flexible piezoelectric sensors demonstrate considerable potential for applications in electronic skin, wearable devices, and biomedical systems. However, their integration into minimally invasive interventional procedures presents significant challenges. This study introduces a barium titanate/polyvinylidene fluoride piezoelectric nanofiber sensor integrated within coronary rotational atherectomy (CRA) devices to mitigate complications associated with excessive grinding forces. During operation, the embedded sensor undergoes deformation upon contact with different tissues being ablated and generates corresponding charge signals, enabling precise monitoring of diverse grinding states. Characterization results indicate a pressure sensitivity of 946 mV N −1 , with response and recovery times of 2.225 and 1.619 ms, respectively. This integrated piezoelectric sensing system exhibits significant potential for providing real‐time grinding force feedback, offering a viable strategy to mitigate risks associated with over‐grinding during CRA procedures.