The embodiment provides a blood pressure measurement device equipped with an air bag drive unit, a pressing surface formed with pressure sensors, and a control unit which calculates first blood pressure values on the basis of a first pressure pulse wave that was detected by the pressure sensors, generates calibration data using the first blood pressure values, and calculates second blood pressure values by calibrating, using the calibration data, a second pressure pulse wave that is detected by the pressure sensors in a state that the pressing force is set at an optimum pressing force. The control unit performs the processing of calculating second blood pressure values by calibrating the second pressure pulse wave if detection conditions of the second pressure pulse wave coincide with detection conditions of a pressure pulse wave used for generation of the calibration data.

A blood pressure measurement device is equipped with a pressing surface which is formed with pressure sensors, an air bag for pressing the pressing surface toward a radius artery that runs under a skin of a living body; an air bag drive unit for controlling the pressing force of the air bag, and a control unit for calculating blood pressure values in the radius artery on the basis of pressure pulse waves that were detected by all of the pressure sensors in a process that the pressing force was increased or decreased.

In one aspect, the disclosure provides a pressure sensor that wirelessly provides force/pressure data to a wireless receiver. The pressure sensor includes a first fluid-responsive membrane configured to be exposed to a region, such as a body fluid, whose pressure is being monitored. A force transducer for measuring this pressure is movable toward and away from the flexible membrane and may be oscillated, either out-of-contact with the first fluid-responsive membrane or in-contact therewith, for static/dynamic pressure sensor calibration. An actuator for displacing/oscillating the force transducer is located within the internal housing. Specific pressure transducers, fluid drainage systems, implantable devices and (at least partially) external sensing devices are disclosed. Calibration techniques, including recalibration to adjust for device drift and to clear biofouling are disclosed.

A surgical spacer equipped to measure important parameters for determining the optimal placement of a surgically-implanted sling.

The disclosed embodiments provide a method for acquiring MR data at resolutions down to tens of microns for application in in vivo diagnosis and monitoring of pathology for which changes in fine tissue textures can be used as markers of disease onset and progression. Bone diseases, tumors, neurologic diseases, and diseases involving fibrotic growth and/or destruction are all target pathologies. Further the technique can be used in any biologic or physical system for which very high-resolution characterization of fine scale morphology is needed. The method provides rapid acquisition of signal at selected values in k-space, with multiple successive acquisitions at individual k-values taken on a time scale on the order of microseconds, within a defined tissue volume, and subsequent combination of the multiple measurements in such a way as to maximize SNR. The reduced acquisition volume, and acquisition of only signal values at select places in k-space, along selected directions, enables much higher in vivo resolution than is obtainable with current MRI techniques.

Optical pressure sensor assemblies that can be used with existing catheters and imaging systems. Pressure sensors may be compatible with atherectomy and occlusion-crossing catheters, where intravascular pressure measurements at various vessel locations are needed to determine treatment efficacy. The pressure sensors may employ an optical pressure measurement mechanism using optical interferometry, and may be integrated with existing imaging modalities such as OCT. The pressure sensor assemblies may include a movable membrane that deflects in response to intravascular pressure; an optical fiber that transmits light to the movable membrane and receives light reflected or scattered back from the movable membrane into the fiber; and a processor or controller configured to determine the distance traveled by the light received in the fiber from the movable membrane, where the distance traveled is proportional to the intravascular pressure exerted against the membrane.

Various embodiments set forth medical devices. In some embodiments, the medical device includes an impedance bridge, an instrument head that includes one or more electrode pairs and a calibration impedance, and one or more wire pairs that couple the impedance bridge to the one or more electrode pairs and the calibration impedance. The disclosed medical devices compensate for impedance caused by extraneous factors arising from manufacturing and materials variances while measuring the impedance of tissue.

In an example, an electrosurgical generator includes a power converter configured to convert a supply power received from a power source to an output power. The output power is suitable for delivering electrosurgical energy. The electrosurgical generator also includes a current sensor configured to sense a current of the output power and generate a logarithmic and analog representation of the current, and a voltage sensor configured to sense a voltage of the output power and generate a logarithmic and analog representation of the voltage. The electrosurgical generator further includes a controller configured to: (i) receive the logarithmic and analog representation of the current sensed by the current sensor, (ii) receive the logarithmic and analog representation of the voltage sensed by the voltage sensor, and (iii) adjust, based on the logarithmic and analog representation of the current and the voltage, a voltage

A method and device enable the detection of pressures induced by an infant's sucking actions on a mouthpiece. The method and device also enable the detection of head movements of the infant. The method and device transmit the data associated with the detected pressures and/or the data associated with the detected head movements to another device for evaluating the hearing sensitivity of the infant.

Methods and systems used in calibrating the position and/or orientation of a wearable device configured to be worn on a wrist or forearm of a user, the method comprises sensing a plurality of neuromuscular signals from the user using a plurality of sensors arranged on the wearable device, and providing the plurality of neuromuscular signals and/or signals derived from the plurality of neuromuscular signals as inputs to one or more trained autocalibration models, determining based, at least in part, on the output of the one or more trained autocalibration models, a current position and/or orientation of the wearable device on the user, and generating a control signal based, at least in part, on the current position and/or orientation of the wearable device on the user and the plurality of neuromuscular signals.