Described herein are implantable device networks that include two or implantable devices configured to modulate neural activity in a subject. The network includes at least one implantable device that can detect a detection signal, such as an electrophysiological signal or a physiological condition. The network also includes a second implantable device configured to emit an electrical pulse based at least on information related to the detection signal. The implantable devices in the network can wirelessly communicate between each other, either directly or through an intermediate device.

In general, embodiments of the ultrasound imaging system save power in relation to a predetermined active aperture and or a predetermined update depth. With respect to a predetermined active aperture, the imaging system saves power by reducing or turning off a predetermined portion of the receive electronics when the predetermined receive electronics portion is not operating in relation to the active aperture range. That is, in a first power saving mode, the predetermined receive electronics portion operates only when it is collecting and or processing the data inside the active aperture range. Furthermore, with respect to a predetermined update depth, the imaging system saves power by reducing the operational frequency as the predetermined receive electronics portion collects or process the data from a deeper area. That is, in a second power saving mode, the predetermined receive electronics portion operates less frequently when it is collecting and or processing the data from the middle or far range than the near range. Lastly, the imaging system saves power by modifying the operation as the predetermined receive electronics portion collects or process the data depending upon the active aperture and or the update depth. That is, in a third power saving mode, the predetermined receive electronics portion operates at least less frequently when it is collecting and or processing the data from the outside the active aperture and or at a far update depth. In other words, the third power saving mode is a hybrid or combination of the first and second power saving modes.

In one embodiment, an ultrasonic diagnostic system includes: a plurality of probes; at least one operation/display panel configured to be disposed at a same examination location as at least one of the plurality of probes; communication equipment configured to communicate with the plurality of probes and the operation/display panel; a measurement circuit configured to measure physical quantity related to the plurality of probes; processing circuitry configured to associate a specific probe of the plurality of probes with the operation/display panel based on the measured physical quantity; and an ultrasonic server configured to be disposed at a location different from the examination location, receive first data acquired by the specific probe via the communication equipment, generate second data based on the first data, and transmit the second data to the operation/display panel via the communication equipment.

In backscatter coefficient imaging, a backscatter coefficient of one region of interest relative another region of interest is used to avoid calibration. The system effects are removed by using a frequency-dependent measure of the backscatter. The relative frequency-dependent backscatter coefficient is determined by an ultrasound scanner.

Wireless charging systems, and methods of use thereof, are disclosed herein. As an example, a method includes: (i) receiving, by a communications radio of a wireless power transmitter, a communication signal from a communications radio of a wireless power receiver, (ii) determining a signal strength of the communication signal, (iii) determining whether the receiver device is within a proximity threshold from the transmitter based, at least in part, on the signal strength of the communication signal, and (iv) determining at least one waveform characteristic for wireless power transmission waves based, at least in part, on the signal strength of the communication signal. The method further includes, in response to determining that the receiver device is within the proximity threshold: activating one or more antennas of the plurality of antennas to transmit the wireless power transmission waves to the receiver device.

A shared resource medical system for monitoring a patient during emergency situations includes a portable defibrillator and an ultrasound transducer physically and communicatively coupled to the defibrillator. The defibrillator includes sensors, a display screen, a power supply, a data storage device, and a defibrillator processor operatively coupled to the screen, the power supply, and the storage device and configured to receive and process user input, receive patient physiological data from the sensors, and generate an interface on the display screen. The ultrasound transducer is configured to obtain ultrasound physiological data of the patient and send the ultrasound physiological data to the defibrillator processor. The defibrillator processor receives and processes the ultrasound physiological data from the ultrasound transducer to generate an ultrasound image for the patient, stores the patient physiological data from the sensors together with the ultrasound image in the storage device, and presents the image on the user interface.

An example method includes receiving, by an implantable device and from an external device, an energy signal; transducing, by the implantable device, the energy signal into electrical power; outputting, by the implantable device and to the external device, a feedback signal that represents an absolute level of the electrical power transduced from the energy signal, wherein the feedback signal includes a first portion that represents a relative level of the electrical power transduced from the energy signal and a second portion that represents a reference voltage level; and delivering, by the implantable device, a level of electrical stimulation therapy proportional to the absolute level of the electrical power transduced from the energy signal.

Systems and methods are disclosed that provide for regular, periodic or continuous monitoring of fluid volume based on direct measurement of an inferior vena cava (IVC) physical dimension using a wireless measurement sensor implanted in the IVC. By basing diagnostic decisions and treatments on changes in an IVC physical dimension, information on patient fluid state is available across the entire euvolemic range of fluid states, thus providing earlier warning of hypervolemia or hypovolemia and enabling the modulation of patient treatments to permit more stable long-term fluid management.

This photo-acoustic imaging device (100) is provided with: light emitting diodes (16); an acoustic wave detecting unit (14); a device main body (2) in which a light source driving unit (22) including a power supply unit (22a) and a signal generating unit (22b) is provided; and a coaxial cable (3). For the coaxial cable (3), an external conductor (3c) of the coaxial cable (3) is connected to the power supply unit (22a) and an internal conductor (3a) of the coaxial cable (3) is connected to the signal generating unit (22b).

An ultrasound cardiovascular measuring device may include an ultrasonic sensor system having an ultrasound transmitter layer configured to generate ultrasonic plane waves and a focusing layer that includes one or more lenses. One or more of the lenses may be configured to generate output signals corresponding to detected ultrasonic reflections. The measuring device may include a control system capable of processing the output signals to calculate values corresponding to one or more cardiovascular properties.