Abstract: The device serves to optically determine physiological variables in perfused tissue. The device comprises a first and a second light source which each emit light radiation of a first or a second predetermined wavelength. The light sources are arranged in such a manner that the light radiation exiting them can penetrate into the perfused tissue. At least one photodetector is used, which is arranged so that it detects the light emitted by the light sources and passing through or backscattered by the perfused tissue. The device also comprises a control unit, which furnishes control signals to the light sources so that the light sources continuously emit light alternately, one or more dark phases can be inserted into this sequence, during which at least one light source does not emit any light.

Abstract: A sensor for measuring at least one body parameter, particularly blood and/or tissue parameters, is used for carrying out the measurements of electromagnetic radiation in the transmission or reflection methods, wherein the sensor uses at least one LED as a source of electromagnetic radiation. At least one photodetector is used as the receiving element. At least one LED is used in a non-invasive measurement of the parameters for ensuring a sufficiently high residual intensity of the radiation received by the photodetector and transmitted or reflected by the blood and/or tissue, wherein the LED has a light intensity of at least 200 millicandela and/or a light yield of at least 2 lumen/watt.

Abstract: A display is connected to at least one sensor for detecting and transmitting physiological measurement values. In addition, one or more displays are used to present the measurement values and/or other associated data visually, acoustically, mechanically, or in some other way perceptible to the senses. A sequence control approach is implemented, according to which the measurement value, before reaching the display, passes through a testing stage, which, on the basis of at least one measured or stored additional value, verifies, checks, or changes the physiological measurement value detected at the sensor or supplements it with additional information. In a process for the noninvasive determination of the oxygen content CaO2 of human and/or animal tissue, the blood oxygen saturation and data on the blood hemoglobin concentration are obtained after the measurements have been acquired by the use of radiation with wavelengths in the range of 400-1,800 nanometers.

Abstract: For detecting and processing a physiological variable, a signal transmitter has devices for processing, using, and/or providing signals, which are generated from measurement values of the physiological variable. In accordance with a sequence control approach, the measurement values are acquired from the detection of electromagnetic waves of different wavelengths. Before the signals are detected, the electromagnetic waves pass through the medium to be examined or are reflected by this medium. For at least a certain percentage of the overall signal quantity, at least two measurement values detected close together in time are used for each generated signal. The signal transmitter is suitable for use in a control circuit, which is designed with an actuator to influence the physiological variable detected instrumentally by the signal transmitter.

Abstract: A defibrillator (1) having an integrated surveillance monitor (10), on the screen of which vital parameters of a patient can be displayed in the form of a rotatable screen content, having a built-in accumulator (9) for power supply independently of the main power supply and having a connection device (2, 3, 7) for external power supply and for recharging the accumulator (9). The screen content is rotatable from a first position relative to the housing to a second position relative to the housing in response to a change in position of the housing.

Abstract: A defibrillator (1) including an integrated surveillance monitor (10) having a screen capable of displaying vital parameters of a patient, a built-in power supply device (9) for supplying power independently of an external power supply, and a connection device (2, 3, 7) for connecting the external power supply to the defibrillator where the screen content automatically rotates on the application of the external power supply.

Abstract: The invention relates to a defibrillator having a capacitor (4) which is chargeable via a DC-DC converter (3) by an accumulator (i.e., rechargeable battery) (1). Between the accumulator (1) and the capacitor (4) there is situated a control device (2) which, as the internal resistance (Ri) of the accumulator (1) increases, draws a lower current from the latter, so that the output voltage of the accumulator (1) is kept approximately constant. Before the defibrillator is automatically deactivated and energy already stored in the capacitor is internally destroyed, the controller interrupts the charging of the capacitor when the residual energy remaining in the accumulator is less than an amount required to charge the capacitor to the desired energy.