Precordior Oy

Turun Yliopisto

Suunto Oy

Murata Manufacturing Co., Ltd.

Tero Koivisto

Mikko Pänkäälä

Kati Sairanen

Tuomas Valtonen

Mikko Pankaala

Juhani Airaksinen

Ari Paasio

Matti Kaisti

Tuukka Panula

Peter Virta

Joona Marku

Tapani Nevalainen

Ulf Meriheinä

Marika Juppo

Tom Kuusela

Mikko Pänäälä

Markus Grönholm

Tero Hurnanen

Mojtaba Jafari Tadi

Juuso Blomster

Antti Saraste

Mikko PÄNKÄÄLÄ

An apparatus for measuring functionality of an arterial system of an individual includes a photoplethysmography sensor for emitting, to the arterial system, electromagnetic radiation having a wavelength in the range from 475 nm to 600 nm and for receiving a part of the electromagnetic radiation reflected off the arterial system. The apparatus further includes a pressure instrument for managing mechanical pressure applied on the arterial system when the photoplethysmography sensor emits and receives the electromagnetic radiation to and from the arterial system. The effect of the mechanical pressure on the envelope of the reflected electromagnetic radiation can be used for determining diastolic blood pressure of arteries or for determining whether there is normal endothelial function.

Apparatus for measuring functionality of an arterial system

An apparatus for producing information indicative of cardiac abnormality, for example Heart failure with preserved ejection fraction 'HFpEF', includes a signal interface for receiving a signal indicative of cardiac motion and a processing system coupled to the signal interface. The processing system is configured to extract, from the signal, temporal portions which belong to diastolic phases of a heart. The processing system is configured to set an output signal of the apparatus to express presence of cardiac abnormality based on a result of a comparison between the indicator quantity and a threshold value.

Apparatus for producing information indicative of cardiac abnormality

According to an example aspect of the present invention, there is provided an apparatus comprising two charge amplifiers configured to receive input from an acceleration sensor and to each produce one first output signal, a differential amplifier configured to receive the first output signals and to amplify a difference between the first output signals to produce two second outputs signals.

Seismocardiography

According to an example aspect of the present invention, there is provided an apparatus for heartbeat detection, comprising: means for forming a first amplified signal and a second amplified signal on the basis of an input signal representative of heartbeat, means for forming a third signal by inverting the second signal and adding a base voltage, and means for indicating an overlap of the first signal and the third signal.

Apparatus and method for heartbeat detection

An apparatus for producing information indicative of cardiac malfunctions, for example atrial fibrillation, includes a processing system for processing an analysis signal produced by a sensor system responsive to motion including cardiovascular motion. The processing system is configured to form a first indicator quantity indicating degree of concentration of the autocorrelation of the analysis signal to a point corresponding to zero time difference between analysis signal samples whose mutual correlation is expressed by the autocorrelation and a second indicator quantity indicating the spectral entropy of the analysis signal. The processing system is configured to determine an indicator of cardiac malfunction on the basis of at least the first indicator quantity and the second indicator quantity.

Method and apparatus for producing information indicative of cardiac malfunctions

An apparatus for determining information indicative of cardiac malfunctions and abnormalities includes a processing device () configured to detect amplitude variation from a signal indicative of cardiovascular motion, where the amplitude variation element variation of the amplitude of a wave pattern, e.g. the AO-peak, repeating on the heart-beat rate on the signal. The processing device is configured to determine, at least partly on the basis of the detected amplitude variation, an indicator of cardiac malfunction and abnormality.

Method and apparatus for determining information indicative of cardiac malfunctions and abnormalities

A device that includes a sensor of angular motion configured to obtain an angular ballistograph signal indicative of rotational movement of a chest of a subject. Signal processing means are configured to generate from this angular ballistocardiograph signal measured values of an output parameter, which is indicative of cardiac operation of the subject.

Heart monitoring system

An apparatus for determining information indicative of cardiac malfunctions includes a processing device () configured to detect whether the time-trend of a signal indicative of cardiovascular motion manifests an indicative phenomenon where the amplitude of a first heartbeat is greater than the amplitude of a second heartbeat and the temporary heartbeat rate is greater prior to the first heartbeat than prior to the second heartbeat. The processing device is further configured to produce an indicator of cardiac malfunction, e.g. an indicator of atrial fibrillation, in response to a situation in which the indicative phenomenon is detected to be present.

Method and apparatus for determining information indicative of cardiac malfunctions

An apparatus for determining information indicative of cardiac malfunctions and abnormalities includes a processing device () configured to extract, from a signal indicative of electromagnetic phenomena related to cardiac activity, a first wave pattern repeating on a heart-beat rate and, from a signal indicative of cardiovascular motion, a second wave pattern repeating on the heart-beat rate. The processing device is configured to form timing data such that each timing value of the timing data is indicative of a time period from a reference point of the first wave pattern belonging to one heart-beat period to a reference point of the second wave pattern belonging to the same heart-beat period. The processing device is configured to determine, at least partly on the basis of the timing data, an indicator of cardiac malfunction and abnormality.

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Turku, Finland

Tero Koivisto