Platforms for mitral and/or tricuspid valve replacement

An atrioventricular valve prosthesis comprising:

• an atrioventricular ring platform structurally configured to be percutaneously and/or transapically delivered to a subject's native atrioventricular valve;
• and
• a valved-stent atrioventricular valve prosthetic device,
• wherein the atrioventricular ring platform comprises wire that when extended from a delivery catheter comprises three preformed, distinct but contiguous sections configured to be inserted when straightened by the delivery catheter to provide an anchoring platform for the valved-stent atrioventricular valve prosthetic device,
• a first one of the sections comprising at least one leading turn located at a distal end of the wire that is configured to wind the atrioventricular ring platform implant in the subject's native atrioventricular valve and around the subject's native atrioventricular valve leaflets,
• a second one of the sections comprising at least one intermediate turn and being sized to fit snugly in the annulus of the native atrioventricular valve, and
• a third one of the sections comprising at least one trailing turn located at a proximal end of the wire, and being configured to maintain a position of the atrioventricular ring platform relative to the subject's native atrioventricular valve prior to the deployment of the valved-stent atrioventricular valve prosthetic device,
• wherein the atrioventricular ring platform is configured to provide an anchor for the valved-stent atrioventricular valve prosthetic device, and
• wherein, when the atrioventricular ring platform is locked into position at the native atrioventricular valve, the annulus is sandwiched between the first one and the third one of the sections.