摘要:
The application describes a microprocessor (140) adapted to receive and process digitized signals derived from an analogue ECG signal (110), said digitized signals being a digital ECG signal (133) and digital in-phase and quadrature phase band power signals (131, 132), the microprocessor comprising: a beat detection unit (141) adapted to receive the in-phase and quadrature phase band power signals (131, 132), calculate a band power value and an adaptive threshold value, and compare said band power value with said adaptive threshold value to detect a QRS complex of the ECG signal indicative of a detected valid beat (142); and an R peak detection unit (143) adapted to receive the digital ECG signal (133) and information about the detected valid beat (142), select a portion of the received ECG signal (420) as a first time window around the detected valid beat; determine the location of a first R peak position based on a continuous wavelet transform calculation of said selected portion of the received ECG signal; and perform a time domain search (480) in a second time window around said first R peak position in order to refine the location of a valid R peak position. The application also describes a system and method for analysis of ECG signals.
摘要:
A biosignal measuring apparatus and a method of measuring a biosignal is provided. A biosignal measuring apparatus includes a first interfacing unit including two or more first interfaces configured to detect first signals form a subject, a second interfacing unit including two or more second interfaces and a connecting unit, the second interfaces being configured to detect noise from the subject, the connecting unit being configured to connect the second interfaces, and a biosignal extracting unit configured to extract a biosignal from the first signals by using signals output from the second interfacing unit.
摘要:
A system and method for brain-computer interface (BCI) based interaction. The method comprising the steps of: acquiring a person's EEG signal; processing the EEG signal to determine a motor imagery of the person; detecting a movement of the person using a detection device; and providing feedback to the person based on the motor imagery, the movement, or both; wherein providing the feedback comprises activating a stimulation element of the detection device for providing a stimulus to the person. The system comprising: means for acquiring a person's EEG signal; means for processing the EEG signal to determine a motor imagery of the person; means for detecting a movement of the person using a detection device; and means for providing feedback to the person based on the motor imagery, the movement, or both; wherein the means for providing the feedback comprises a stimulation element of the detection device for providing a stimulus to the person.
摘要:
An adapter for an endovascular device and a catheter steering device are provided. The adapter for an endovascular device includes a body, a conductive metal ring and a conductive wire. The body includes a first open end, a second open end, a central lumen having a substantially cylindrical surface extending from the first open end to the second open end, and a channel extending from the central lumen to an external opening. The conductive metal ring is attached to the surface of the central lumen, and the conductive wire is coupled to the conductive metal ring and extends through the channel and the external opening. The steering device for a catheter that has a plurality of lumens with spaced distal openings includes a stylet for disposition within one of the plurality of lumens, and a steering member for disposition within a different one of the plurality of lumens. In the installed position, the stylet and the steering member are connected together at respective distal ends such that a portion of the steering member is disposed outside of the distal end of the catheter.
摘要:
A heart monitor is disclosed including an electroacoustic transducer such as an earphone coupled to a controller. The transducer is positioned in a person's ear in acoustic communication with the tympanum. Signals from the transducer are processed to determine the presence of pulsatile blood flow. The heart monitor may be incorporated into a portable media playback device alternating between playback and monitoring mode or performing both simultaneously using one earphone for each function. The heart monitor may be incorporated into a defibrillator to sense the presence of blood flow for use in a shock delivery decision.
摘要:
Chest compressions are measured and prompted to facilitate the effective administration of CPR. A displacement detector (12) produces a displacement indicative signal indicative of the displacement of the CPR recipient"s chest toward the recipient"s spine. A signaling mechanism (18) provides chest compression indication signals directing a chest compression force being applied to the chest and a frequency of such compressions. An automated controller (28) and an automated constricting device (59) may be provided for applying CPR to the recipient in an automated fashion. The automated controller (28) receives the chest compression indication signals from the signaling mechanism (18). In accordance with the chest compression indication signals, it controls the force and frequency of constrictions. The system (10) may be provided with a tilt compensator (16) comprising a tilt sensor mechanism (24, 25) outputting a tilt compensation signal indicative of the extent of tilt of the device, and may be further provided with an adjuster (S10) for adjusting the distance value in accordance with the tilt compensation signal. An ECG signal processor may be provided which removes the CPR-induced artifact from a measured ECG signal obtained during the administration of CPR.
摘要:
Method for obtaining characteristics of a target physical entity (system) comprising the steps of: - providing an excitation signal to the target physical entity and simultaneously measuring the response of the target physical entity ; - performing analog signal processing on the measured response to eliminate artefacts that arise from a signal path outside the target physical entity; - determining the characteristics from the signal processed measured response,
characterized in that the excitation signal is selected and the analog signal processing is selected such that after analog signal processing of the measured signal, the analog measured signal contains artefacts which are localized in time.
摘要:
A neural response system, including a plurality of filters for each receiving and filtering a plurality of tilt response signals obtained from a person; a segmenter for segmenting the filtered response signals into time segments; and a neural event extractor for performing a neural event extraction process on each of the time segments to obtain and generate biomarker data representing a plurality of biomarkers for each segment.