System for coupling a cardiac autonomous capsule to a tool for implanting the same

A unit comprising an autonomous implantable capsule and a tool for guiding and anchoring the capsule to an implantation site, wherein:

• the capsule comprises a tubular body provided at its distal end with an anchoring member adapted to enter a tissue of an organ wall, and at its proximal end with a coupling member adapted to cooperate with a conjugated coupling member of the tool;
• the tool comprises a catheter provided at its distal end with said conjugated coupling member;
• the coupling member of the capsule and the conjugated coupling member of the tool having complementary respective shapes adapted to allow the transmission of a torque rotationally driving the capsule by the catheter;
• the unit further comprising a junction means adapted to selectively produce in the axial direction an effort for mutually moving closer and urging the coupling member of the capsule against the conjugated coupling member of the tool, for making the capsule rotationally and translationally integral with the catheter, then uncoupling the capsule from the catheter by relieving said effort,
• and wherein, further:
• the shape of the conjugated coupling member of the tool comprises on the distal side in axial cross-section, a recess turned towards the rear of the capsule, having a V-shape comprising two diverging inclined faces, and
• the shape of the coupling member of the capsule comprises at its proximal end a convex surface adapted to frictionally and slidingly urge against the diverging inclined faces of the V-shape.