Blood Volume Pulse (BVP) Sensor

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Purpose

The BVP Sensor, also called Blood Volume Pulse Sensor, can be used to measure the relative change in blood flow resulting from contraction of the heart. In other words vasoconstriction and vasodilatation. It uses light-based technology, also known as a PPG (photoplethysmography). Combine with respiration for Heart Rate Variability (HRV) training.  BVP is a very efficient way of quickly measuring heart rate and relative blood flow. For a more precise measurement of heart rate, it is recommended to apply an ECG with the ExG Sensor.

The BVP sensor provides a photoplethysmography (PPG) signal that corresponds with variations in peripheral blood flow resulting from cardiovascular activity and responses, with the purpose of providing information on the cardiovascular variations, such as heart rate variations and measured pulse amplitude. The sensor output is not intended to be used for vital monitoring purposes.

The device is designed for medical use, not restricted to a specific medical indication, for acquisition of physiological signals. The device is intended to be used by, or under supervision of, a health professional within a clinical environment.


How to Use BVP Sensor

BVP Finger module

  1. Align the dot on the connector with the indicator on the signal acquisition device

  2. Plug the connector in the corresponding port

  3. Clamp the rear tabs of the finger clip together to spread open the finger clip

  4. Place the finger clip on the index or middle finger and ensure that the sensor cable is positioned along the top of the hand

BVP Head module

  1. Align the dot on the connector with the indicator on the signal acquisition device

  2. Plug the connector in the corresponding port (refer to devices)

  3. Place the emitter and are receiver parts into the head band accessory

  4. Place the elastic band horizontally around the patient’s head with the band just over the ears and the sensor part on the arteria temporalis

  5. Tighten the band in such way that it fixates the sensor and does not cause any discomfort


How to connect BVP sensor

Before the actual measurement can start, the equipment has to be connected. Detailed information on setting up the NeXus can be found in the NeXus User Manual or Quick Start.

BVP connecting NeXus-4

Connect the Blood Volume Pulse sensor to input C of the NeXus-4. Make sure the red dot of the connector is facing downward.

BVP connecting NeXus-32F

Connect the Blood Volume Pulse sensor to input 30 of the NeXus-32. Make sure the red dot of the connector is facing upward with the NeXus-32F.

BVP connecting NeXus-10 MKII

Connect the Blood Volume Pulse sensor to input G of the NeXus-10. Make sure the red dot of the connector is facing downward with the NeXus | 10 MKII

BVP connecting NeXus-Q32

Connect your BVP sensor to the input AUX 2 of the NeXus | Q32





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