A system and method for monitoring a health status of a subject. The system comprises: a medical device implantable in the subject and having a passage or compartment through which blood flows through; a sensor device embedded at or near a surface of said passage within said medical device for generating signals suitable for measuring a Doppler shift effect occurring within said passage; and a control device coupled to said sensor device for measuring a liquid blood flow rate within said passage based on sensor generated signals outputs. The embedded sensor device comprises a first piezo-electric element configured to generate an acoustic excitation signal and a second piezo-electric element configured to receive said acoustic excitation signal. The second piezo-electric element emits a signal responsive to said acoustic excitation signal. Control device in real time compares a generated output signal with the input excitation signal to determine a Doppler frequency shift measurement.

A system for non-invasively determining an indication of an individual's blood pressure is described. In certain embodiments, the system calculates pulse wave transit time using two acoustic sensors. The system can include a first acoustic sensor configured to monitor heart sounds of the patient corresponding to ventricular systole and diastole and a second acoustic sensor configured to monitor arterial pulse sounds at an arterial location remote from the heart. The system can advantageously calculate a arterial pulse wave transit time (PWTT) that does not include the pre-ejection period time delay. In certain embodiments, the system further includes a processor that calculates the arterial PWTT obtained from the acoustic sensors. The system can use this arterial PWTT to determine whether to trigger an occlusive cuff measurement.

A monitoring system includes a wearable appliance; and a processor coupled to the wearable appliance to analyze vital data or wellness data.

An apparatus for extracting a cardiovascular characteristic is provided. The apparatus may include: a first sensor configured to measure a vibration signal generated by a pulse wave of a subject; a second sensor configured to measure a pulse wave signal of the subject; a processor configured to perform an operation related to a cardiovascular characteristic on the basis of the measured vibration signal and pulse wave signal; and a main body in which the first sensor, the second sensor, and the processor are mounted.

Example blood pressure apparatus using active materials and related methods are described herein. An example apparatus includes a band to be worn around a limb of a user, an active material carried by the band and a controller to: (1) apply an activation signal to the active material to constrict blood flow in the limb, and (2) reduce the activation signal to allow blood flow in the limb.

A device for detecting stenosis comprising disposable components to ensure function and sanitary conditions, said device having a disposable sensing pad, a disposable piezo assembly, and a disposable sensing pod, wherein the entire device can be disposed of after a predetermined number of uses to ensure accuracy of results and of sanitary conditions.

A system and method for noninvasively measuring blood pressure is disclosed. In one embodiment, the system includes a monitoring cuff comprising at least one sensor implanted within the monitoring cuff, the at least one sensor being configured to detect blood flow data in a user, an occlusion cuff configured to inflate and deflate to restrict and permit blood flow in the user, the occlusion cuff being in electrical communication with the monitoring cuff, and a computing device configured to control the inflation, deflation, and pressure applied by the occlusion cuff, and the computing device being configured to record and analyze the blood flow data detected by the monitoring cuff.

The present invention provides a personal hand-held monitor comprising a signal acquisition device for acquiring signals which can be used to derive a measurement of a parameter related to the health of the user, the signal acquisition device being integrated with a personal hand-held computing device. The present invention also provides a signal acquisition device adapted to be integrated with a personal hand-held computing device to produce a personal hand-held monitor as defined above.

A system for non-invasively determining an indication of an individual's blood pressure is described. In certain embodiments, the system calculates pulse wave transit time using two acoustic sensors. The system can include a first acoustic sensor configured to monitor heart sounds of the patient corresponding to ventricular systole and diastole and a second acoustic sensor configured to monitor arterial pulse sounds at an arterial location remote from the heart. The system can advantageously calculate a arterial pulse wave transit time (PWTT) that does not include the pre-ejection period time delay. In certain embodiments, the system further includes a processor that calculates the arterial PWTT obtained from the acoustic sensors. The system can use this arterial PWTT to determine whether to trigger an occlusive cuff measurement.

A system provides blood pressure monitoring for a user. The system includes an in-ear device, a sensor, and a processor. The in-ear device includes in-ear electrodes that capture electrical signals of pulses of a user's heartbeat from within an ear canal of the user. The sensor captures sensor data indicating tissue movements caused by the user's heartbeat. The processor determines a time interval between a peak in an R wave in electrocardiogram (EKG) data generated using the electrical signals and a peak in a waveform representing the tissue movement generated using the sensor data. The processor determines a blood pressure level of the user using the time interval. The sensor may be located on the in-ear device, and may be a motion sensor, an acoustic sensor, or a photoplethysmogram (PPG) sensor.