A delivery system for delivering a prosthesis to a target treatment area, said system comprising: an inner guidewire catheter having a proximal end, a distal end, and a lumen extending therebetween, the lumen sized to slidably receive a guidewire; a distal capsule coupled to the distal end of the inner guidewire catheter, wherein the distal capsule comprises an inner channel sized to receive the prosthesis; a bell catheter slidably disposed over the inner guidewire catheter, the bell catheter having a bell element adjacent a distal end of the bell catheter; an anchor catheter slidably disposed over the bell catheter, the anchor catheter having an anchor element adjacent a distal end of the anchor catheter and configured to engage the prosthesis, and wherein the bell element is configured to constrain the prosthesis into engagement with the anchor element; a sheath catheter slidably disposed over the anchor catheter, the sheath catheter having a proximal end and a distal end; a proximal capsule coupled to the distal end of the sheath catheter, wherein the proximal capsule comprises an inner channel sized to receive the prosthesis; and an actuator mechanism (11, 12) comprising a distal actuator and a proximal actuator, the actuator mechanism operably coupled with the inner guidewire catheter and the sheath catheter, wherein actuation of the distal actuator in a first direction moves the proximal capsule away from the distal capsule and wherein actuation of the proximal actuator moves the bell element away from the anchor element, thereby removing a constraint from the prosthesis and allowing the prosthesis to expand, and wherein actuation of the proximal actuator or the distal actuator in a second direction opposite the first direction moves the proximal capsule into engagement with the distal capsule thereby enclosing the prosthesis therein. an inner guidewire catheter having a proximal end, a distal end, and a lumen extending therebetween, the lumen sized to slidably receive a guidewire; a distal capsule coupled to the distal end of the inner guidewire catheter, wherein the distal capsule comprises an inner channel sized to receive the prosthesis; a bell catheter slidably disposed over the inner guidewire catheter, the bell catheter having a bell element adjacent a distal end of the bell catheter; an anchor catheter slidably disposed over the bell catheter, the anchor catheter having an anchor element adjacent a distal end of the anchor catheter and configured to engage the prosthesis, and wherein the bell element is configured to constrain the prosthesis into engagement with the anchor element; a sheath catheter slidably disposed over the anchor catheter, the sheath catheter having a proximal end and a distal end; a proximal capsule coupled to the distal end of the sheath catheter, wherein the proximal capsule comprises an inner channel sized to receive the prosthesis; and an actuator mechanism (11, 12) comprising a distal actuator and a proximal actuator, the actuator mechanism operably coupled with the inner guidewire catheter and the sheath catheter, wherein actuation of the distal actuator in a first direction moves the proximal capsule away from the distal capsule and wherein actuation of the proximal actuator moves the bell element away from the anchor element, thereby removing a constraint from the prosthesis and allowing the prosthesis to expand, and wherein actuation of the proximal actuator or the distal actuator in a second direction opposite the first direction moves the proximal capsule into engagement with the distal capsule thereby enclosing the prosthesis therein.