TNO Finger Pressure Reference Guide - Integral Process

TNO Finger Pressure Reference Guide 32index finger can be used almost equally well. Finger cuffs are conically shaped asfingers are.The preformed conical finger cuffs are not designed for application to the thumb.Only apply a finger cuff to the thumb when it is impossible to measure fingerarterial pressure on any other finger and be alerted that incorrect pressure levelsmay result.4.3 Wrapping the cuff correctlyTo wrap a finger cuff around the finger:• Open the finger cuff just enough to be able to see the LED and photodiodecomponents• Place the finger in the cuff such that the LED and photodiode (or photocell,PC) are symmetrically placed on each side of the finger's soft palmar parts andhave a centered position on the middle phalanx.• Lead the cuff cable and air hose in between two fingers to the volar side of thehand to reach the frontend unit.• Make sure the finger cuff is placed centered between two knuckles, touchingeach knuckle.• Wrap the finger cuff so that the airbladder follows the curvature of the fingerskin without noticeable clearance between airbladder and skin. The fingercuffs are designed so that correct wrapping is almost natural. Wrapping wasnot tight enough when it is possible to easily rotate or to shift the cuff from thefinger.• Insert the cuff cable and air hose connectors into the fronted unit.• Repeat steps 1 to 6 for a second finger.