A system and method for transmitting data ultrasonically through biological tissue employs a network of a plurality of nodes, at least a portion of the nodes implantable within the biological tissue. At least one implanted node includes a transmitter having an orthogonal frequency division multiplex signal generator to encode an ultrasonic signal for transmission through the biological tissue to an ultrasonic receiver at another node.

A tactile stimulation interface comprising a surface explored by touch by means of a finger of a user, actuators applying forces on said surface, and control means of the actuators, said control means sending, to the actuators, signals corresponding to the forces to be applied to said surface, the forces being determined by a time reversal method, means for detecting the contact of the finger with the surface and for monitoring the movement of the finger on the surface. The control means are capable, in order to produce an acoustic lubrication effect in at least one given area of the surface, of generating a signal formed from a convolution of a pulsed response returned by a continuous function representative of the acoustic lubrication effect.

Implantable and wearable devices and system for transmitting signals ultrasonically through biological tissue are implemented based on an Internet of Medical Things (IoMT) platform software and hardware architecture. The devices are size-, energy-, and resource-constrained and implement ultrasonic communication protocols and communicate with each other through ultrasound.

A device includes a tissue conduction communication (TCC) transmitter that generates a TCC signal including a carrier signal having a peak-to-peak amplitude and a carrier frequency cycle length including a first polarity pulse for a first half of the carrier frequency cycle length and a second polarity pulse opposite the first polarity pulse for a second half of the carrier frequency cycle length. Each of the first polarity pulse and the second polarity pulse inject a half cycle charge into a TCC pathway. The TCC transmitter starts transmitting the TCC signal with a starting pulse having a net charge that is half of the half cycle charge and transmits alternating polarity pulses of the carrier signal consecutively following the starting pulse.

Provided is a wearable, self-contained drug infusion or medical device capable of communicating with a host controller or other external devices via a personal area network (PAN). The medical device utilizes a PAN transceiver for communication with other devices in contact with a user's body, such as a physiological sensor or host controller, by propagating a current across the user's body via capacitive coupling. The wearable nature of the medical device and the low power requirements of the PAN communication system enable the medical device to utilize alternative energy harvesting techniques for powering the device. The medical device preferably utilizes thermal, kinetic and other energy harvesting techniques for capturing energy from the user and the environment during normal use of the medical device. A system power distribution unit is provided for managing the harvested energy and selectively supplying power to the medical device during system operation.

An apparatus for the control of a medical implant in a mammal body is provided. The apparatus comprises a first and a second part being adapted to be in electrical connection with each other by using said body as a conductor, in which apparatus the first part is adapted for implantation in the mammal body for the control of and communication with the medical implant, the second part is adapted to be worn on the outside of the mammal body in physical contact with said body and adapted to receive control commands from a user and to transmit these commands to the first part. The apparatus is adapted for communication between the first and the second parts and in that the second part is adapted to receive and recognize the control commands from a user transmitted to the first part for the control of said implant, the first part being adapted to convey such signals to the implant.

An implantable medical system for intra-body communication, comprising an implantable first device. The first device comprises a plurality of capacitors and a DC blocking capacitor. The first device is configured to discharge the plurality of capacitors via the DC blocking capacitor in an encoded sequence to generate a signal.

The present invention relates to a new on-body dual antiphase antenna design and a plurality of its modifications to better transmit a radio frequency signal into human or animal body, or receive a radio frequency signal from human or animal body. The antiphase transmission and/or reception is achieved by connecting each individual patch antenna to a 180 degrees microwave power splitter or to a 180 degrees microwave power combiner.

Embodiments described herein relate to implantable medical devices (IMDs) and methods for use therewith. Such a method includes using an accelerometer of an IMD (e.g., a leadless pacemaker) to produce one or more accelerometer outputs indicative of the orientation of the IMD. The method can also include controlling communication pulse parameter(s) of one or more communication pulses (produced by pulse generator(s)) based on accelerometer output(s) indicative of the orientation of the IMD. The communication pulse parameter(s) that is/are controlled can be, e.g., communication pulse amplitude, communication pulse width, communication pulse timing, and/or communication pulse morphology. Such embodiments can be used to improve conductive communications between IMDs whose orientation relative to one another may change over time, e.g., due to changes in posture and/or due to cardiac motion over a cardiac cycle.

The disclosure relates to a medical image acquisition device with a pilot tone transmitter and a pilot tone receiver and to a method for operating the same. The pilot tone transmitter is configured to emit an electromagnetic radio frequency signal into a patient. The pilot tone receiver is configured to receive the radio frequency signal and to decode an item of information relating to a physiological process in the patient. The pilot tone transmitter has a modulator configured to modulate the electromagnetic radio frequency signal with a code and the pilot tone receiver is configured to select the modulated radio frequency signal using the encoding from a plurality of signals.