Patent ID: 8126555

Claim:
An active implantable medical device, comprising: a generator, having: means for analyzing physiological signals and/or for producing stimulation impulses; and means for sending and receiving digital data, including means for producing a control in the direction of the transducer, said control being selected from among a plurality of controls, and means for receiving and decoding an information, and at least one lead having a proximal end and a distal end, connected on the proximal end to the generator and comprising at the distal end: at least one electrode able to contact surrounding tissues to apply said stimulation impulses and collect said physiological signals; a two-wire connection able to connect the at least one electrode to the generator; and at least one transducer of a sensor or an actuator type including means for receiving, decoding, and carrying out said control, means for sending an information to said generator in response to the reception of a specific control, and a memory; and a connection for digital data communication, able to couple said at least one transducer to the generator via the two-wire connection; Wherein said: generator further comprising means for producing a control micro-impulse before the sending of said control to the transducer, said micro-impulse comprising at least one particular characteristic form, distinctive from said stimulation impulses; and the lead further comprises on the distal end: controlled switches, selectively interposed between said at least one electrode and said respective wires of the two-wire connection; and a control circuit coupled to the two-wire connection, able: i) to recognize said particular form characteristic detected on the two-wire connection, so as to discriminate between impulses of stimulation and control micro-impulses; and ii) on detection of a control micro-impulse, to control the opening of the controlled switches so as to insulate the at least one electrode from the two-wire connection, and connect the transducer to said two-wire connection; and iii) wherein the particular form characteristic of said control micro-impulse is discriminating from a logic level 1 signal and a logic level 0 signal on the two-wire connection.