Heart chamber prosthetic valve implant with elevated valve section and single chamber anchoring for preservation, supplementation and/or replacement of native valve function

A prosthetic heart valve device for expanded implantation within a heart chamber that is in fluid communication with a native valve having leaflets, the device comprising:

• a base section defining a base section lower surface;
• an atrial dome that is configured to be in pressured engagement with a roof of the heart chamber when the device is expanded and implanted in the heart chamber;
• an intermediate section that extends from the base section to the atrial dome;
• and
• a valve support extending within an interior defined by the base, the atrial dome and the intermediate section, wherein:
• the valve support defines:
• a valve support lower surface;
• and
• a height;
• the valve support lower surface extends from the base section lower surface;
• and
• the valve support:
• includes at least one prosthetic valve leaflet that allows blood to flow therethrough in an antegrade direction while preventing blood flow therethrough in a retrograde direction;
• and
• wherein the at least one prosthetic valve leaflet is attached to the valve support at a location along the height that is above the valve support lower surface.