Abstract: A system and method of enhancing a blood pressure signal is disclosed. The volume of an artery in a finger is measured by a photo-plesthysmographic (PPG) system, which produces a PPG signal. This PPG system is placed inside a cuff, and the cuff pressure is controlled by the PPG signal. The portion or component of the PPG signal having a frequency higher than a predefined threshold frequency is then modified or enhanced, such as by multiplying the high frequency component by a calibration factor. A blood pressure signal is then calculated using the cuff pressure and the modified PPG signal. A blood pressure contour curve may then be generated, and a variety of parameters may be calculated using the curve.

Abstract: A method is provided for measuring the volume, the composition and the movement of electroconductive body fluids, based on the electrical impedance of the body or a body segment, especially for performing electromechanocardiography (ELMEC) or impedance cardiography (IKG) measurements for determining hemodynamic parameters. According to the method, an alternating measuring current of at least one frequency is introduced into the body, and the impedance and temporal variations thereof of essentially the same body segment through which the alternating measuring current flows are measured for at least two different measuring lengths (L, L2, L3, L4, L5), essentially in the longitudinal direction of the body.

Abstract: A method for the continuous non-invasive measurement of blood pressure includes at least one first pressure cuff and one second pressure cuff of comparable or identical size, each cuff including an inflatable pressure measuring chamber applicable to a first and a second body part or region containing an artery. The first pressure cuff has a first plethysmographic sensor connected to a regulating and control device used to regulate the pressure in a first pressure measuring chamber by means of a measuring signal of the plethysmographic sensor. The first pressure measuring chamber is connected to a pressure sensor in order to obtain a pressure measuring signal. The second pressure measuring chamber is a reference pressure chamber that can be regulated at the same time as the first pressure measuring chamber, independently therefrom, and can be regulated by the regulating and control device according to a pre-determinable pressure function.

Abstract: The invention relates to a method and a device for the continuous non-invasive measurement of blood pressure, according to the principle of the relaxed arterial wall, said device comprising at least one first pressure cuff (1) and one second pressure cuff (1?) of a comparable or identical size. Said cuffs respectively comprise an inflatable pressure measuring chamber (4, 4?) and can be applied to a first and a second body part or body region (3, 3?) respectively containing an artery (2, 2?) of a comparable or identical size. The first pressure cuff (1) has a first plethysmographic sensor device (5) connected to a regulating and control device (6) used to regulate the pressure in the first pressure measuring chamber (4) by means of the measuring signal of the plethysmographic sensor device (5). The pressure measuring chamber (4) is connected to at least one pressure sensor (7) in order to obtain a pressure measuring signal.

Abstract: A method is provided for measuring the volume, the composition and the movement of electroconductive body fluids, based on the electrical impedance of the body or a body segment, especially for performing electromechanocardiography (ELMEC) or impedance cardiography (IKG) measurements for determining hemodynamic parameters. According to the method, an alternating measuring current of at least one frequency is introduced into the body, and the impedance and temporal variations thereof of essentially the same body segment through which the alternating measuring current flows are measured for at least two different measuring lengths (L, L2, L3, L4, L5), essentially in the longitudinal direction of the body.

Abstract: A medical electrode is provided for measuring the electrical resistance of the body of a patient, especially an impedance cardiography electrode. The electrode includes a non-conductive, unilaterally adhesive support (1) that is elongated and that forms a connecting strap (1?) at its one end for connecting the electrode with electrical terminals; and two contact strips (2a, 2b) from an electrically conductive aluminum composite film, as the electrode material, that are adhered to the support (1) on the adhesive face thereof. The contact strips (2a, 2b) on their side facing away from the support (1) form a composite structure with a skin-friendly electrically conductive adhesive, leaving free the connection straps or lugs (2a?, 2b?), and the strips bend into connection straps (2a?2b?) at the connecting end of the support (1).

Abstract: According to the invention a sphygmomanometer for continuous plethysmographic measurement of blood pressure includes at least one inflatable pressure pad which is attachable to a body part containing an artery, arterial signal sensors for determining arterial blood flow, and a valve-controlled pressure chamber connected to a gas source and to the inflatable pressure pad and including a pressure sensor for measuring the pressure in the pressure chamber or in the pressure pad. The pressure chamber has separate inlet and outlet valves which are controlled dependent on signals of the arterial signal sensors.