Multichannel Measurement of Infant Tongue Sucking Force using a Nipple

Abstract

The aim of this study was to clarify the mechanical action of the infant tongue during sucking. We developed an artificial nipple containing multiple small built-in force sensors capable of measuring forces a tongue applies to an artificial nipple. A force sensor in the shape of a cantilever structure composed of a thin stainless steel beam and all-purpose foil strain gauges were attached to the surface of the beam. The signals obtained from the force sensor underwent amplification, and subsequently were transferred to a PC via a USB port. Using this system, measurements were taken from three infant test subjects. Institutional approval had previously been granted. Waveforms indicating the elevation of the tongue movement from the apical to the posterior part of the tongue, and the main tongue force applied from under the nipple, were observed.