The patented dual-cuff NIBP measurement technique owned by Jumbor combines oscillometric method and conventional Korotkoff sounds method, yielding more accurate systolic number.

According to this technique, two cuffs are applied to the patient's arm during the period of NIBP measuring.The upper cuff supplies varied pressure to the arterial vessels, meanwhile the lower cuff acts as a stethoscope to detect pulse signals. Clinical experiments have proved that dual-cuff method could effectively minimize the uncertainty of systolic measurement.The waveforms detected from lower cuff would clearly indicate the point corresponding to a patient's systolic. On the other hand, oscillometric method-based NIBP devices with single cuff have received complaints due to doubtable systolic accuracy.

The following charts are typically obtained from single-cuff and dual-cuff NIBP measurement. The waveforms from dual-cuff method(Fig.2)has obvious advantage compared to that from single-cuff method(Fig. 1).