A method of preparing a ventricular partitioning device for implantation using a delivery system, the method comprising:coupling the ventricular partitioning device to a delivery catheter；loading the ventricular partitioning device and a portion of the delivery catheter into a sleeve and creating a liquid-tight seal between a portion of the sleeve and the delivery catheter, wherein the delivery catheter or the sleeve comprises a first fluid delivery port positioned thereon；coupling a distal end of the sleeve to a guide catheter, wherein the guide catheter comprises a second fluid delivery port positioned thereon； anddelivering fluid through at least one of the first fluid delivery port or the second fluid delivery port, preferably at a flow rate between about 0.5 to 5 mL/second.
