The invention provides methods, devices and systems for delivering, positioning and/or repositioning an expandable prosthetic heart valve in a patient’s heart chamber. At least one non-looped wire and looped wire pair is operatively connected with an expanded prosthetic heart valve that is collapsed within a delivery catheter lumen having its distal end positioned in the subject heart chamber. The collapsed prosthetic heart valve is translated through the delivery catheter lumen to and out of its distal end where the prosthetic heart valve expands to a working configuration. The wire(s) of the non-looped and looped wire pair may be manipulated by pulling proximately or pushing distally to position or reposition the expanded prosthetic stent into position, then released from connection with the positioned stent and withdrawn from the patient.本發明提供用於在一患者之心臟腔室中遞送、定位及/或復位一可擴張人工心臟瓣膜之方法、裝置及系統。至少一非環狀線及環狀線對與一經擴張人工心臟瓣膜可操作地連接，該經擴張人工心臟瓣膜塌縮於一遞送導管內腔內，該遞送導管內腔使其遠端定位於該主體心臟腔室中。該塌縮之人工心臟瓣膜穿過該遞送導管內腔平移至且平移出其遠端，在該遠端處，該人工心臟瓣膜擴張至一作用構形。可藉由向近端拉或向遠端推而操縱該非環狀及環狀線對之(若干)線以將該經擴張人工支架定位或復位至適當位置，接著從與該經定位支架之連接釋放且從該患者撤回。
