Abstract: Embodiments of the present disclosure are configured to assess the severity of a blockage in a vessel and, in particular, a stenosis in a blood vessel. In some particular embodiments, the devices, systems, and methods of the present disclosure are configured to collect and wirelessly distribute reliable pressure signals to other devices, and do so in a small, compact device that integrates with existing proximal and distal pressure measurement systems and does not require a separate power source.

Abstract: The invention provides a body-worn monitor featuring a processing system that receives a digital data stream from an ECG system. A cable houses the ECG system at one terminal end, and plugs into the processing system, which is worn on the patient's wrist like a conventional wristwatch. The ECG system features: i) a connecting portion connected to multiple electrodes worn by the patient; ii) a differential amplifier that receives electrical signals from each electrode and process them to generate an analog ECG waveform; iii) an analog-to-digital converter that converts the analog ECG waveform into a digital ECG waveform; and iv) a transceiver that transmits a digital data stream representing the digital ECG waveform (or information calculated from the waveform) through the cable and to the processing system. Different ECG systems, typically featuring three, five, or twelve electrodes, can be interchanged with one another.

Abstract: This document relates to computer-based systems and techniques for analyzing skin coloration using spectral imaging techniques to determine a medical condition of an individual. This document further relates to providing feedback to a rescuer or other medical professional based on the colorimetric properties of the patient's skin.

Abstract: A venous pressure measurement apparatus includes a pressure controller configured to change a pressure applied from a cuff to a portion of a body where a vein and an artery exist and to which the cuff is attached, a pulse wave detector configured to detect pulse waves from a pressure the cuff receives from the portion of the body, and a venous pressure calculating section configured to calculate a venous pressure based on the applied pressure and the pulse waves detected by the pulse wave detector during a period in which the applied pressure is changed. The pressure controller is configured to execute a plurality of measurement steps, the applied pressure being increased or reduced from an initial value in each of the measurement steps.

Abstract: Systems and methods are provided for determining the frequency of a cardiovascular pulse based on a first physiological signal that is continuously available and a second physiological signal that is less available and that is more accurate or otherwise improved relative to the first signal with respect to pulse rate estimation. When the second signal is available it controls the determination of the pulse rate. When the second signal is unavailable, the first signal is used to determine the pulse rate. This can include using the first signal to estimate the pulse rate until the second signal is available, at which point the pulse rate is estimated based on the second physiological signal. Alternatively, the first signal could be used to determine a number of candidate pulse rates, and the second signal could be used to select a pulse rate from the set of candidate pulse rates.

Abstract: The delivery system may include, for example, an outer catheter having a distal tip and an inner support member, such as an inner catheter, disposed within the outer catheter. The inner support member includes an anchor member adjacent a distal tip of the inner support member and a support portion axially inward of the anchor member. The support portion is configured for supporting an implantable device thereon. A diameter of the anchor member corresponds to a diameter of a portion of a vessel in which the anchor member is to be disposed. The anchor member is configured to be lodged in the portion of the vessel to locate an intended position of the anchor member and to prevent movement of the inner support member relative to the vessel during release of the implantable device.

Abstract: The present invention relates to a rehabilitation system (10) for a patient (24) suffering from a damaged muscle and/or nerve, said system (10) comprising: a brain activity sensor (14) for measuring a patient's brain activity related to controlling the damaged muscle and/or nerve; —a muscle sensor (18) for measuring a muscular activity of the damaged muscle and/or a neural activity of the damaged nerve; a display (22) for displaying a representation (34) of an affected body part of the patient (24); and a control unit (20) for determining an intended movement of the affected body part in which the damaged muscle and/or nerve is arranged, and for controlling the display (22) to display a representation (36) of the intended movement, wherein the control unit (20) is configured to determine the intended movement based on the patient's brain activity measured by the brain activity sensor (14) and based on the muscular and/or neural activity of the damaged muscle and/or nerve measured by the muscle sensor (18).

Abstract: A blood pressure ratio calculation device is a device for calculating a maximum-minimum blood pressure ratio corresponding to a ratio between a maximum blood pressure value and a minimum blood pressure value of an inspection target, and includes an input unit for inputting a relative blood pressure waveform corresponding to temporal change in relative blood pressure of the inspection target, a spectrum generation unit for generating a relative blood pressure waveform spectrum by performing Fourier transform on the relative blood pressure waveform, and an analysis unit for calculating the maximum-minimum blood pressure ratio on the basis of the relative blood pressure waveform spectrum.

Abstract: A heart rate monitor (40) for detecting a pulse of a person (10) employs a platform (43), a plurality of multi-axis accelerometers (41R, 41L) and a pulse detector (44). The multi-axis accelerometers (41R, 41L) are adjoined to the platform (43) to generate differential mode signals (AZR, AZL) indicative of a sensing by the accelerometers (41) of physiological motion (12) of the person (10) relative to acceleration sensing axes (42R, 42L) and to generate common mode signals (AXR, AXL, AYR, AYL) indicative of a sensing by the accelerometers (41R, 41L) of extraneous motion by the person (10) relative to the acceleration sensing axes (42R, 42L). The pulse detector (44) is operably connected to the multi-axis accelerometers (41R, 41L) to generate a pulse signal (PS)as a function of a vertical alignment of the acceleration sensing axes (42R, 42L) combining the differential mode signals (AZR, AZL) and cancelling the common mode signals (AXR, AXL, AYR, AYL).

Abstract: A system that assesses health condition by measuring pulse includes: a pulse measuring device that measures an artery of a user who receives assessment of health condition; a terminal that has a function that transmits measured-value data on pulse measured by the pulse measuring device to a health assessing administrator and receives information from the health assessing administrator; an administrative server that is administered by the health assessing administrator, analyzes the measured-value data transmitted from the terminal, and stores various data on health condition that is necessary to assess and analyze health condition. The user transmits the measured-value data on measured pulse from the terminal to the health assessing administrator, and the health assessing administrator transmits assessment information on health condition analyzed by the administrative server to the terminal.

Abstract: The present invention provides a technique for continuous measurement of blood pressure based on pulse transit time and which does not require any external calibration. This technique, referred to herein as the ‘Composite Method’, is carried out with a body-worn monitor that measures blood pressure and other vital signs, and wirelessly transmits them to a remote monitor. A network of body-worn sensors, typically placed on the patient's right arm and chest, connect to the body-worn monitor and measure time-dependent ECG, PPG, accelerometer, and pressure waveforms. The disposable sensors can include a cuff that features an inflatable bladder coupled to a pressure sensor, three or more electrical sensors (e.g. electrodes), three or more accelerometers, a temperature sensor, and an optical sensor (e.g., a light source and photodiode) attached to the patient's thumb.

Abstract: The invention relates to a portable device for video electroencephalography. The device has a central portion to which a plurality of arcuate arms are directly or indirectly connected in a movable manner. The arms together define a helmet structure adapted to be worn on the head of a patient, arm is configured to allow mounting of one or more electrodes which are connected to an electronic central unit mounted on the helmet structure. The device also has a supporting member and a video camera mounted on the supporting member so as to face the helmet structure, said video camera. The arms have a first arm and a second arm which extend away from each other in a longitudinal direction (L), as well as a third arm and a fourth arm which extend away from each other in a front direction (F). The first and second arms are pivoted on the central portion about respective axes parallel to the front direction (F), and the third and fourth arms are pivoted about respective axes parallel to the longitudinal direction (L).

Abstract: A blood pressure device having a cylindrical drum cuff housing adapted to measure the circumference of either a right or left arm and administer a blood pressure test. The drum cuff housing is connected to a knuckle support assembly adapted to provide freedom of movement for postural positioning before and during the blood pressure test.

Abstract: The present invention relates to the field of medical devices, and, more particularly, to a portable system for testing one or more lung functions, and novel techniques for noninvasive determination of one or more pulmonary function characteristics.

Abstract: A device is configured for tracking e.g. the diastolic blood pressure in a patient. The device applies a pressure to a body part, e.g. by use of an inflatable cuff. By performing repeated and alternating pressure changes in the cuff, a specific feature of a signal that relates to the diastolic blood pressure can be tracked and possibly measured. The device may have particular use in conjunction with cardiopulmonary resuscitation devices.

Abstract: Generally, embodiments of the invention relate to self-powered analyte determining devices (e.g., electrochemical analyte monitoring systems) that include a working electrode, a counter electrode, and an optional resistance value, where the working electrode includes analyte sensing components and the self-powered analyte determining device spontaneously passes a current directly proportional to analyte concentration in the absence of an external power source. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring.

Abstract: The invention provides a multi-sensor system for monitoring a patient's respiratory rate. The system features an impedance pneumography sensor featuring at least two electrodes and a processing circuit configured to measure an impedance pneumography signal and a 3 axis accelerometer) that attaches to the patient's torso and measures an ACC signal indicating movement of the chest or abdomen that is also sensitive to respiratory rate. The signals are collectively processed, e.g. with the adaptive filter to determine a value for the respiratory rate.

Abstract: A driver's physical condition detection device for detecting a physical condition of a driver driving a vehicle includes a vehicle detector configured to detect a change in motion of the vehicle during driving, a driver detector configured to detect a change in motion of a head of the driver, and a physical condition determination portion configured to perform a determination process of determining whether or not the physical condition of the driver is deteriorated, based on the change in motion of the head of the driver with respect to the change in motion of the vehicle during driving.

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 patient diabetes monitoring system with an efficient unsupervised daily monitoring profile clustering algorithm, a method, and a computer product thereof are disclosed. The system may include a physiological data input device or sensor which receives a plurality of physiological measurements to generate a dataset, a memory which stores a clustering algorithm, and a processor. The clustering algorithm when executed by the processor, causes the processor to automatically pre-process the dataset to control an amount of bias/aggressiveness from the collected unsupervised daily monitoring profiles, thereby generating a pre-processed dataset, build a similarity matrix from the pre-processed dataset, and output an optimum number of similarity clusters found by the processor from the similarity matrix.