Detection/stimulation microlead with enhanced positioning

摘要

A microlead includes exposed areas forming stimulation electrodes. The microlead further includes a stimulation zone (ZS) defined by a first preshape of the microcable at the distal end thereof, in a region including the electrodes (30). The microlead further includes a retention zone (ZR) including a retainer shape adapted to abut the wall of the target vessel. The microlead further includes a stretching zone (ZEL) proximal to the retention zone. The stretching zone may be defined by a shape adapted to make the region elastically deformable in the longitudinal direction under the effect of an axial traction/compression stress. The axial traction/compression stiffness in the elongation zone is lower than that in the retention and stimulation areas.

主权项

1. A microlead comprising:
a distal portion formed by an active microcable; a stimulation zone at the distal end of the microcable; a retention zone defined by a first shaped region formed to abut the wall of a target vessel; and a stretching zone defined by a second shaped region configured to provide elastic deformability in the longitudinal direction under the effect of an axial tension/compression stress exerted on the microlead, wherein the axial traction/compression stiffness of the stretching zone is less than the axial traction/compression stiffness of the retention and stimulation zones.