Intravascular implantable medical device introduction

A kit for intravascular implantation of an implantable medical device within a patient, the kit comprising:

• an elongated outer sheath forming an inner lumen with a distal opening, the outer sheath sized to traverse a vasculature of the patient;
• and
• an elongated inner sheath with an inflatable member at a distal portion of the inner sheath, wherein the inflatable member is selectively inflatable from a proximal end of the inner sheath, wherein the inflatable member is configured to substantially fill the inner lumen and close-off the distal opening of the outer sheath when inflated, wherein the inner sheath is slidable within the inner lumen of the outer sheath,
• wherein the inner sheath further includes a stopper proximally located relative to the inflatable member, wherein the inflatable member is remotely controllable from a proximal end of the inner sheath to retract in a proximal direction towards the stopper,
• wherein the kit is configured such that the inflatable member can be retracted in a proximal direction towards the stopper and past an implantable medical device positioned within a distal portion of the outer sheath.