Finapres Medical Systems B.V. offers equipment with proven and advanced technology

Products - Finapres® NOVA Technology

Finapres® NOVA Technology

Finapres Medical Systems B.V. offers equipment with proven and advanced technology. Finapres systems are built on combinations of four technologies.

Volume clamp with physiocal technology
The volume-clamp method was first introduced by Czech physiologist Prof. J Peñáz in 1967. With this method, finger arterial pressure is measured using a finger cuff and an inflatable bladder in combination with an infrared plethysmograph, which consists of an infrared light source and detector. The infrared light is absorbed by the blood, and the pulsation of arterial diameter during a heart beat causes a pulsation in the light detector signal.

The first step in this method is determining the proper unloaded diameter of the finger arteries, the point at which finger cuff pressure and intra-arterial pressure are equal and at which the transmural pressure across the finger arterial walls is zero. Then the arteries are clamped (kept at this unloaded diameter) by varying the pressure of the finger cuff inflatable bladder using the fast cuff pressure control system.

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