A delivery system (100; 200) for use with a prosthetic heart valve having a stent frame to which a valve structure is attached, the system comprising: a shaft assembly including a distal portion (115; 215) and an intermediate portion (120; 220), and an inner lumen (122; 304) extending through the shaft assembly from the proximal end of the delivery system to the distal end of the delivery system, wherein the inner lumen is a guide wire lumen configured to slidably receive a guide wire; a sheath assembly (106; 204) defining an outer lumen (124; 306) sized to slidably receive the shaft assembly; at least one flush port (116; 302) formed in the intermediate portion (120; 220), the at least one flush port (116; 302) in fluid communication with the inner lumen (122; 304) and the outer lumen (124; 306) including the region between an outer diameter of the distal shaft assembly portion and of the intermediate shaft assembly portion and an inner diameter of the sheath assembly and including the space occupied by the prosthetic heart valve; and wherein the delivery system (100; 200) is configured to transition from a loaded state in which the sheath assembly (106; 204) encompasses the prosthetic heart valve to a deployed state in which the sheath assembly (106; 204) is withdrawn from the prosthetic heart valve, wherein the at least one flush port is formed adjacent to a distal end of the intermediate portion (120; 220), wherein the intermediate portion has a larger outer diameter than the distal portion, and wherein the system is configured to use a single flush for both the inner lumen and the outer lumen using a single access point for introducing fluid into the inner lumen. a shaft assembly including a distal portion (115; 215) and an intermediate portion (120; 220), and an inner lumen (122; 304) extending through the shaft assembly from the proximal end of the delivery system to the distal end of the delivery system, wherein the inner lumen is a guide wire lumen configured to slidably receive a guide wire; a sheath assembly (106; 204) defining an outer lumen (124; 306) sized to slidably receive the shaft assembly; at least one flush port (116; 302) formed in the intermediate portion (120; 220), the at least one flush port (116; 302) in fluid communication with the inner lumen (122; 304) and the outer lumen (124; 306) including the region between an outer diameter of the distal shaft assembly portion and of the intermediate shaft assembly portion and an inner diameter of the sheath assembly and including the space occupied by the prosthetic heart valve; and wherein the delivery system (100; 200) is configured to transition from a loaded state in which the sheath assembly (106; 204) encompasses the prosthetic heart valve to a deployed state in which the sheath assembly (106; 204) is withdrawn from the prosthetic heart valve, wherein the at least one flush port is formed adjacent to a distal end of the intermediate portion (120; 220), wherein the intermediate portion has a larger outer diameter than the distal portion, and wherein the system is configured to use a single flush for both the inner lumen and the outer lumen using a single access point for introducing fluid into the inner lumen.