Abstract: A method, apparatus, and system for determining a correspondence of physiological data obtained in a physiological study of a subject. The method includes extracting a first signal from the physiological study. A second signal from the physiological study is also extracted. The first signal and the second signal are obtained by one or more biometric sensors. Data of the first signal and data of the second signal are stored on a memory storage. A coherency value is determined between components of the extracted first signal and components of the extracted second signal. And the correspondence of the physiological study data is determined based on the determined coherency value.

Abstract: A non-invasive method and system is provided for determining an internal component of respiratory effort of a subject in a respiratory study. Both a thoracic signal (T) and an abdomen signal (A) are obtained, which are indicators of a thoracic component and an abdominal component of the respiratory effort, respectively. A first parameter of a respiratory model is determined from the obtained thoracic signal (T) and the abdomen signal (A). The first parameter is an estimated parameter of the respiratory model that is not directly measured during the study. The internal component of the respiratory effort is determined based at least on the determined first parameter of the respiratory model. The first model parameter is determined based on the thorax signal (T) and the obtained abdomen signal (A) without an invasive measurement.

Abstract: A method, apparatus, and system for measuring respiratory effort of a subject are provided. According to the method, a thoracic effort signal (T) is obtained, the thoracic effort signal (T) being an indicator of a thoracic component of the respiratory effort. An abdomen effort signal (A), the abdomen effort signal (A) being an indicator of an abdominal component of the respiratory effort. A respiratory flow (F) is obtained. The respiratory effort is determined by adjusting the components of a model of the respiratory system based on the thoracic effort signal (T), the abdomen effort signal (A), or the respiratory flow (F) or any combination of the thoracic effort signal (T), the abdomen effort signal (A), and the respiratory flow (F).

Abstract: A method, apparatus, and system for measuring respiratory effort of a subject are provided. A thorax effort signal and an abdomen effort signal are obtained. The thorax effort signal and the abdomen effort signal are each divided into a volume-contributing component of the respiratory effort and a paradox component. The paradox component represents a non-volume-contributing component of the respiratory effort. The abdomen paradox component is negatively proportional to the thoracic paradox component. The thorax effort signal or the abdomen effort signal or both are weighted by a weight factor to obtain a volume-proportional signal. The volume-proportional signal is proportional to the actual respiratory volume of the respiratory effort. A calibration factor for calibrating the thorax effort signal and the abdomen effort signal is obtained by optimizing the weight factor by minimizing thoracic paradox component and the abdomen paradox component.

Abstract: A system and method are provided for measuring biometric signals. The system includes a first electrode, a second electrode and a circuit. The first electrode forms at least a portion of a first belt configured to be placed at least partially around a torso of a subject. The second electrode forms at least a portion of a second belt configured to be placed at least partially around the torso. The circuit is configured to measure a voltage between the first electrode and the second electrode. The first and second electrodes are arranged to determine the respiratory effort of the subject. The first or second electrode includes a capacitive electrode with a flexible structure including an insulated conductor. The insulated conductor is insulated such that the conductor does not come in direct contact with skin of the subject when the first or second electrode is placed on the subject.

Abstract: A belt connector is provided. The belt connector is configured to electrically connect a conductor of an electrode belt to a male portion of a snap connector electrode connected to a biometric device. The belt connector includes a frame, a fastener, and an engaging member. The frame includes a receiving hole having radial flexibility. The receiving hole is configured to receive and fasten the frame to a protrusion of the male portion of the snap connector electrode. The fastener is configured to fasten the frame to a first end of the electrode belt. The engaging member is adjacent to the receiving hole and engages the conductor of the electrode belt by the conductor passing through the receiving hole. When the male portion of the snap connector electrode penetrates the receiving hole, the conductor is forced into contact with a lateral surface of the male portion of the snap connector electrode.

Abstract: A belt connector is provided. The belt connector is configured to electrically connect a conductor of an electrode belt to a male portion of a snap connector electrode connected to a biometric device. The belt connector includes a frame, a fastener, and an engaging member. The frame includes a receiving hole having radial flexibility. The receiving hole is configured to receive and fasten the frame to a protrusion of the male portion of the snap connector electrode. The fastener is configured to fasten the frame to a first end of the electrode belt. The engaging member is adjacent to the receiving hole and engages the conductor of the electrode belt by the conductor passing through the receiving hole. When the male portion of the snap connector electrode penetrates the receiving hole, the conductor is forced into contact with a lateral surface of the male portion of the snap connector electrode.

Abstract: A system is provided for measuring biometric signals, including at least two electrodes, wherein at least one is a capacitive electrode with a flexible structure, the system having a circuit for measuring the voltage between the two electrodes, where in some embodiments both electrodes are capacitive electrodes, and can be arranged as flexible belts, the system being suitable for measuring ECG signals and can be configured to measure also respiratory effort with Respiratory Inductive Plethysmography (RIP) technology, using the same electrodes which are used for measuring capacitively the ECG signals, a method being further provided for measuring biosignals with the system of the invention, the method further including generating an added current signal with a signal generator connected to the circuit, where the added signal has a frequency substantially removed from the frequency of the biosignal of interest, and by measuring the voltage signal of the frequency component corresponding to the added current sig

Abstract: A belt connector for electrically connecting an electrode belt to a biometric device to be carried on a human or animal body. The belt connector is made from one single piece which can be economically manufactured in order to function as a single-use consumable, to be used with a matching biometric device. The connector comprises a molded plastic frame having a shaped circular or semi-circular hole with radial flexibility to function as a female snap button fastener for receiving and fastening on the front side of the frame a male snap protrusion. The belt connector further comprises fastening means for fastening to the frame a belt end of said electrode belt, and a member adjacent to said snap fastener hole to engage an electrode wire end electrically connected to said belt such that said end is in contact with said hole and comes in electrical contact with a conducting male snap fastener inserted in said hole.

Abstract: A belt connector for electrically connecting an electrode belt to a biometric device to be carried on a human or animal body. The belt connector is made from one single piece which can be economically manufactured in order to function as a single-use consumable, to be used with a matching biometric device. The connector comprises a molded plastic frame having a shaped circular or semi-circular hole with radial flexibility to function as a female snap button fastener for receiving and fastening on the front side of the frame a male snap protrusion. The belt connector further comprises fastening means for fastening to the frame a belt end of said electrode belt, and a member adjacent to said snap fastener hole to engage an electrode wire end electrically connected to said belt such that said end is in contact with said hole and comes in electrical contact with a conducting male snap fastener inserted in said hole.

Abstract: A system is provided for measuring biometric signals, including at least two electrodes, wherein at least one is a capacitive electrode with a flexible structure, the system having a circuit for measuring the voltage between the two electrodes, where in some embodiments both electrodes are capacitive electrodes, and can be arranged as flexible belts, the system being suitable for measuring ECG signals and can be configured to measure also respiratory effort with Respiratory Inductive Plethysmography (RIP) technology, using the same electrodes which are used for measuring capacitively the ECG signals, a method being further provided for measuring biosignals with the system of the invention, the method further including generating an added current signal with a signal generator connected to the circuit, where the added signal has a frequency substantially removed from the frequency of the biosignal of interest, and by measuring the voltage signal of the frequency component corresponding to the added current sig

Abstract: A biometric belt connector for electrically connecting an electrode belt to a biometric device to be carried on a human or animal body. The belt connector comprises a back element and a front element configured to engage with each other in a fixed and locked arrangement, fastening in between them an end of an electrode belt, the front element having a substantially circular hole, an electrically conducting wire which forms a loop, such that part of said wire loop is exposed through said hole when the back and front elements are engaged. The wire loop is connected to a conducting element extending from an end of an electrode belt, which conducting element forms part of or is connected to an electrode in the electrode belt. The hole is of suitable dimension to form a female snap button receiver for a male snap fastener on said biometric device.

Abstract: Medical and physiological measurement systems for diagnosis analysis are provided, in particular for sleep and blood pressure diagnosis, which are given by simple and cost efficient designs, wherein the corresponding medical devices and/or medical data interface devices are equipped with such data communication ports that they appear as mass storage devices upon connectivity with a computer. The data transparency offered by such standardized data transfer means is implemented to offer, for example, the possibility of storing diagnosis software in a platform independent manner in memory of the mass storage device. Furthermore, analysis results, diagnosis related reports and/or raw data collected by the medical system can easily be accessed, viewed and/or analyzed by the measurement system operator at the computer by accessing the corresponding devices as mass storage devices.