Heart valve treatment device and method

A method of repairing a native heart valve of a heart, the method comprising:

• intravascularly delivering a prosthetic device to the native heart valve, the prosthetic device comprising a frame having a support ring and a prosthetic valve having a plurality of prosthetic leaflets configured to open and close during a cardiac cycle, the support ring attached to a base of the plurality of prosthetic leaflets to define an opening of the prosthetic valve when the plurality of prosthetic leaflets open during the cardiac cycle, the plurality of prosthetic leaflets arranged to permit blood flow through the opening of the prosthetic valve when the plurality of prosthetic leaflets are open during the cardiac cycle;
• transitioning the prosthetic device from a delivery state to a deployed state;
• positioning the prosthetic device at a target position within the native heart valve via a support coupled to the prosthetic device;
• and
• locking the support catheter to suspend and maintain the prosthetic device within the native heart valve such that native leaflets of the native heart valve open during the cardiac cycle and close to co-apt against the prosthetic valve, wherein the support catheter remains in situ after delivery of the prosthetic device.