Patent ID: 8521300
Filing Date: 2013-08-27
Classification: A61N,H03H

Abstract:
1. A detection/stimulation lead for an active implantable medical device comprising: a proximal end and a distal end, a connector at the proximal end to connect the lead to a generator of an active implantable medical device; at least one detection/stimulation electrode at said distal end and at least one conductor, wherein each detection/stimulation electrode has an associated conductor, each said conductor being connected to and coupling it associated detection/stimulation electrode to the proximal end of the lead, said connector extending along the lead body, a protection circuit comprising at least one selectively modifiable series impedance dipole having two terminals interposed between each detection/stimulation electrode and its associated conductor, said modifiable series impedance dipole haying a resistive component permanently mounted between the two terminals of the dipole, said lead being substantially free of a conductor connecting the protection circuit to the generator, wherein: the dipole further comprises a controlled active switch, said switch having a normally open state and closed state, said closed state short circuiting the two terminals across the resistive component, and The protection circuit further comprises a control stage coupled to each conductor and comprising means for detecting a voltage of a stimulation pulse applied to the conductor, said detected stimulation pulse voltage having a duration, and selectively controlling by said detected voltage the closing of the controlled active switch for a duration at least equal to the duration of the detected stimulation pulse, wherein: