Abstract: The present invention relates to a step-up converter with a plurality of levels, in particular for use in an implantable medical device, comprising a transformer (11) comprising a single primary winding and a single secondary winding; a primary circuit (6) comprising the single primary winding; and a secondary circuit (7) comprising the single secondary winding and a plurality of step-up levels, each of the step-up levels comprising a first diode (4a, 4b, 4c, 4d, 4e, 4f) and a second diode (10a, 10b, 10c, 10d, 10e, 10f) and a first capacitor (9a, 9b, 9c, 9d, 9e, 9f) and a second capacitor (3a, 3b, 3c, 3d, 3e, 3f), wherein the first capacitors (9a, 9b, 9c, 9d, 9e, 9f) of the plurality of step-up levels are connected in series or in parallel with one another.

Abstract: A device which includes a generator of electric current pulses and a neurostimulation probe with M sectoral electrodes forming stimulation poles for passing a current between at least one anode and at least one cathode in a predetermined stimulation configuration. The generator includes N current sources and N current sinks, the N sources and the N sinks being defined independently of the M electrodes. A first distribution circuit can indiscriminately and dynamically switch any of the N sources to any of the M electrodes, and a second distribution circuit can indiscriminately and dynamically switch any of the N sinks to any of the M electrodes. The device can thus define a plurality of commutation combinations between sources and/or sinks, providing a single average current in the organ to be stimulated for different respective predetermined pole configurations.

Abstract: The invention relates to a device which includes a generator of electric current pulses and a neurostimulation probe with M sectoral electrodes forming stimulation poles for passing a current between at least one anode and at least one cathode in a predetermined stimulation configuration. The generator includes N current sources and N current sinks, the N sources and the N sinks being defined independently of the M electrodes. A first distribution circuit can indiscriminately and dynamically switch any of the N sources to any of the M electrodes, and a second distribution circuit can indiscriminately and dynamically switch any of the N sinks to any of the M electrodes. The device can thus define a plurality of commutation combinations between sources and/or sinks, providing a single average current in the organ to be stimulated for different respective predetermined pole configurations.