Abstract: Systems, methods, and devices for activating an implantable medical device from a low-power sleep state are provided. One method includes receiving a wake-up signal at a receiver device from a transmitter device. The wake-up signal includes a series of pulses having a pulse pattern encoding a predetermined wake-up code. The wake-up signal is transmitted via intracorporeal communication of electrical pulses conducted by interstitial tissues of a patient's body. The method further includes extracting the wake-up code from the wake-up signal and determining whether the wake-up code corresponds to a stored wake-up value. The method further includes, in response to determining that the predetermined wake-up code corresponds to the stored wake-up value, switching at least one active circuit element of the receiver device from a lower-power sleep state into a higher-power operational state.

Abstract: A controlled switching module (40, 42), for a multielectrode lead for an active implantable medical device, which connects a detection/stimulation electrode (28, 30) to one or the other conductor (36, 38) of a two-wire line. Two volatile controlled switches (52, 54), for example, complementary MOS associated with at least one non-volatile programmable memory component (68, 70), for example, a suspended nanotube cell or a magnetic tunnel junction cell, supply two previously programmed stable open or closed states. A generator maximum-minimum circuit (58) is coupled to the conductors at the input, and to the controlled switches at the output for selectively controlling them via the corresponding non-volatile memory component (68, 70).

Abstract: Systems, methods, and devices for activating an implantable medical device from a low-power sleep state are provided. One method includes receiving a wake-up signal at a receiver device from a transmitter device. The wake-up signal includes a series of pulses having a pulse pattern encoding a predetermined wake-up code. The wake-up signal is transmitted via intracorporeal communication of electrical pulses conducted by interstitial tissues of a patient's body. The method further includes extracting the wake-up code from the wake-up signal and determining whether the wake-up code corresponds to a stored wake-up value. The method further includes, in response to determining that the predetermined wake-up code corresponds to the stored wake-up value, switching at least one active circuit element of the receiver device from a lower-power sleep state into a higher-power operational state.

Abstract: An autonomous active medical implantable device, with a power supply and a wake-up circuit that responds to receipt of specific pulses transmitted through the interstitial tissues of the body. A transmitter device (40) generates trains of modulated pulses applied to electrodes (22, 24), and a receiver (50) processes (e.g., filter, amplify and demodulate) pulses collected on electrodes (22?, 24?). The receiver circuits (50) are selectively activated from a dormant (sleep) state in which they are not powered by a power source (34), to an operational (active) state in which they are powered and able to process (e.g., filter, amplify and demodulate) the collected pulses. A specific wake-up pulse train, configured in a predetermined characteristic pulse pattern, triggers passive wake-up circuits (66) in the receiver (50) to switch the receiver circuits from the sleep state to the operational state.

Abstract: An autonomous active medical implantable device, with a power supply and a wake-up circuit that responds to receipt of specific pulses transmitted through the interstitial tissues of the body transmitter device (40) generates trains of modulated pulses applied to electrodes (22, 24), and a receiver (50) processes (e.g., filter, amplify and demodulate) pulses collected on electrodes (22?, 24?). The receiver circuits (50) are selectively activated from a dormant (sleep) state in which they are not powered by a power source (34), to an operational (active) state in which they are powered and able to process (e.g., filter, amplify and demodulate) the collected pulses specific wake-up pulse train, configured in a predetermined characteristic pulse pattern triggers passive wake-up circuits (66) in the receiver (50) to switch the receiver circuits from the sleep state to the operational state.

Abstract: An active implantable medical device including bidirectional communications between a generator and sensors or actuators located at the distal extremity of a lead. A lead (14) is connected at its proximal end to a generator (10) and has at the distal end electrodes (38, 42) able to come in contact with surrounding tissues. A two-wire connection (34, 36) connects these electrodes to the generator. The lead incorporates transducers (24, 26) of sensor or actuator type. The generator includes circuits for sending and receiving digital data (46,48,50,54,56) capable of producing instructions to one of the transducers and to receive and decode information from one of the transducers in response to a specific instruction produced by the generator. The transducer is able to receive, decode and carry out the aforementioned controls, as well as send data in response.

Abstract: An active implantable medical device including bidirectional communications between a generator and sensors or actuators located at the distal extremity of a lead. A lead (14) is connected at its proximal end to a generator (10) and has at the distal end electrodes (38, 42) able to come in contact with surrounding tissues. A two-wire connection (34, 36) connects these electrodes to the generator. The lead incorporates transducers (24, 26) of sensor or actuator type. The generator includes circuits for sending and receiving digital data (46,48,50,54,56) capable of producing instructions to one of the transducers and to receive and decode information from one of the transducers in response to a specific instruction produced by the generator. The transducer is able to receive, decode and carry out the aforementioned controls, as well as send data in response.

Abstract: An active medical device equipped with a memory for the storage of medical data such as Holter data and instructions for controlling a microprocessor. This device comprises a micro-processor operating (14) on N bits, and a memory organized in words of 2N bits, with a first sector (22) storing a control software for the microprocessor, and a second sector (24) storing of the elementary medical data of N bits. Each word of the first sector includes N bits of operating code and n bits of error detection and correction code, with 1≦n≦N. An interfacing circuit (18) allows, according to commands delivered by the microprocessor, to read in parallel N+n bits of a word from the first sector, or to read or to write N bits of low weight of a word of the second sector, or to read or write N bits of high weight of a word of the second sector.