Steerable catheter for the implantation of a leadless cardiac capsule

A tool for the intracorporeal implantation of a medical device, the tool having a steerable catheter including a flexible tubular unit comprising a mobile tube received inside an intermediate tube,

• wherein the mobile tube and the intermediate tube are coaxial to each other, extend from a proximal end to a distal end of the steerable catheter and are telescopically mounted into each other with a possibility of mutual rotation and mutual axial translation,
• wherein the mobile tube comprises at least one central lumen located radially in a central region near an axis of the steerable catheter and extending axially from the proximal end to the distal end,
• wherein the intermediate tube comprises along its whole length a longitudinal notch radially offset in a direction of offset with respect to the axis of the steerable catheter and extending axially from the proximal end to the distal end,
• wherein the longitudinal notch contains a cable adapted to undergo a traction exerted from the proximal end, the traction generating a bending of the steerable catheter directed towards the offset direction,
• and wherein the steerable catheter further comprises around the intermediate tube a sealed external sheath surrounding the intermediate tube over its periphery and covering the longitudinal notch over its length