Societe Des Produits Nestle S.a.

Valtion Teknillinen Tutkimuskeskus

Teknologian Tutkimuskeskus Vtt Oy

Juha M Kortelainen

Michael Reuben Jedwab

Jyrki Lötjönen

Harri Polonen

Rajat Mukherjee

Harri PÖLÖNEN

A device can screen swallowing safety and swallowing efficiency. The device includes a processor configured to receive accelerometry data, determine a an A-P and S-I signal summed spectrogram from the accelerometry data, and perform one or more of identifying a missing swallow, identifying that the data was clipped from the start, identifying that the data was clipped from the end, or identifying that the data contains noise. The device can have a user interface configured to provide one or more outputs including at least one of audio or graphics based on these identifications. If the data does not contain these signal quality issues, the device can compare the data against preset classification criteria defined for each of swallowing safety and swallowing efficiency and thus classify each of the swallowing events with a swallowing safety classification and a swallowing efficiency classification.

Methods and devices for determining signal quality for a swallowing impairment classification model

A monitoring apparatus comprising a multichannel pressure sensing sensor for measuring a ballistocardiographic signal of a human body is provided. The monitoring apparatus comprises a manner for selecting a time window for heart inter beat interval including two consecutive heart beats to be estimated, defining a spectrum for the signal averaging between at least two measurement channels of the sensor, a cepstrum from the logarithm of the spectrum, and a heart inter beat interval. A method for defining a heart inter beat interval is also provided, where a ballistocardiographic signal of a body is measured with a multichannel pressure sensing sensor, a time window for heart inter beat interval including two consecutive heart beats to be estimated is selected, a spectrum for the signal averaging between at least two measurement channels of the sensor, a cepstrum from the logarithm of the spectrum, and a heart inter beat interval are defined.

Extraction of heart inter beat interval from multichannel measurements

Growing community of inventors

Tampere, Finland

Juha M Kortelainen