General Electric Company

Ge Healthcare Finland Oy

Instrumentarium Corporation

Börje Rantala

Juha Virtanen

Kimmo Henrik Uutela

Heli Tolvanen-Laakso

Leena Pesu

Risto Rossi

Aki Backman

An ECG front end and a method for acquiring ECG signals are disclosed. The front end comprises a plurality of parallel measurement branches, each measurement branch comprising a protection resistor having a first terminal and a second terminal, wherein the first terminal is connectable to a respective ECG electrode. Each measurement branch comprises a first input amplifier operatively connected to the second terminal of the protection resistor and a capacitor having a first and a second terminal, wherein the first terminal of the capacitor is operatively connected to a point between the first input amplifier and the second terminal of the protection resistor and the second terminal of the capacitor is connected to a virtual ground of a second input amplifier. Each first input amplifier serves as a source of an ECG channel signal and each second input amplifier as a source of high frequency signal components.

ECG front end and method for acquiring ECG signals

A method for managing alarms in a physiological monitoring apparatus, a physiological monitoring apparatus, and a computer program product for a physiological monitoring apparatus are disclosed. A plurality of averages of a physiological parameter are derived, wherein the parameter is derived from at least one physiological signal acquired from a subject and wherein the averages represent a corresponding plurality of averaging periods. Respective alarm limits are assigned to the plurality of averages and at least one alarm indicator is defined, each alarm indicator being defined based on respective average and alarm limit. An alarm is detected based on the at least one alarm indicator.

Alarm generation method for patient monitoring, physiological monitoring apparatus and computer program product for a physiological monitoring apparatus

The invention relates to a system for delivering anesthesia drugs to a patient. The system comprises means for feeding anesthesia drugs to the patient treated, a measuring device for measuring at least one parameter relating to the effects of the anesthetic drugs fed to the patient, a patient monitor to show the results measured by the measuring devices, and feeding means for feeding patient demographics to the system. The system further comprises means for visual planning of the anesthesia drug delivery before the drugs are actually fed. The system can also comprise means for anesthesia management for drug interaction during the treatment.

System for delivering anesthesia drugs to a patient

A floating physiological data acquisition system with expandable ECG and EEG. The data acquisition system for obtaining electrophysiological signals from a patient comprises a patient monitor and separate patient side acquisition units connectable to the patient monitor. Each of the patient side acquisition units comprises an analog-to-digital converter, a serial interface communicative towards a serial bus connecting the patient side data acquisition unit with the patient monitor, and a serial interface controller processor. Each of the patient side acquisition units further forms a part of a floating patient applied part of the data acquisition system.

Floating physiological data acquisition system with expandable ECG and EEG

The invention relates to a method and a system for a medical monitoring system, in which method the functions of a patient are measured, and the change in the electric activity of the patient are observed. In the method, the electrocardiogram (EKG), electroencephalogram (EEG), and the impedance cardiograph signal (IKG) are being measured with one piece of measuring equipment.

Monitoring of patient's electrical characteristics using a single piece of equipment

The present invention concerns a method and a system for measuring non-invasively a blood pressure of a patient. The method comprises the steps of: determining () a mechanical heart beat starting time point from an impedance cardiogram signal, detecting () a heart beat pulse arrival time at a peripheral site of the patient, calculating () a pulse wave transit time from the heart to the peripheral site by utilizing said mechanical starting point of the heart beat and said heart beat pulse arrival time,

Measuring blood pressure

The invention relates to pulsed oximeters used to measure blood oxygenation. The current trend towards mobile oximeters has brought the problem of how to minimize power consumption without compromising on the performance of the device. To tackle this problem, the present invention provides a method for controlling optical power in a pulse oximeter. The signal-to-noise ratio of the received baseband signal is monitored, and the duty cycle of the driving pulses is controlled in dependence on the monitored signal-to-noise ratio, preferably so that the optical power is minimized within the confines of a predetermined lower threshold set for the signal-to-noise ratio. In this way the optical power is made dependent on the perfusion level of the subject, whereby the power can be controlled to a level which does not exceed that needed for the subject.

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Helsinki, Finland

Börje Rantala