Laerdal Medical As

Jon Nysæther

Helge Myklebust

Joar Eilevstjønn

Geir Strand

Geir Inge Tellnes

Mette Stavland

Embodiments of the present invention are directed toward a system and method of determining real time chest compression depth of a CPR patient or manikin from acceleration and a reference signal, such as force. In one embodiment, an acceleration signal is filtered and integrated to determine a raw depth signal. A force signal is adjusted to having a similar amplitude, phase, and shape as the raw depth signal. The force signal is filtered. The adjusted force signal is subtracted from the filtered force signal to obtain a compensation signal. The chest compression depth is obtained by adding the raw depth signal to the compensation signal.

System and method for increased accuracy in determining CPR chest compression depth in real time

A system for processing chest compression signals is disclosed including a processing unit, a depth signal device, and a threshold device comprising upper and lower thresholds. The system may also include a force signal device. The processing unit is adapted to output a signal depending on values of depth and force signals with respect to the thresholds.

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Hafrsfjord, Norway

Jon Nysæther