Ductus arteriosus and septal conduit implants and related delivery systems and methods

A device for insertion into a lumen of a ductus arteriosus for maintaining a patency of the ductus arteriosus, comprising:

• a first end section comprising a first plurality of struts configured to expand to define a proximal face having a first diameter;
• a second end section comprising a second plurality of struts configured to expand to define a distal face having a second diameter;
• a body section extending between the first end section and the second end section and defining a third diameter, the body section having a third plurality of struts, wherein the body section comprises a crown to bridge ratio of about 6:3 to about 9:3;
• and
• a device lumen extending through the first end section, the body section, and the second end section such that blood is configured to flow through the device lumen,
• wherein the device is configured to transition from a crimped configuration to an expanded configuration, such that, in the crimped configuration, a crimped diameter of the device is sized to pass through a lumen of a microcatheter and, in the expanded configuration, the device is configured to expand to an expansion diameter of greater than about 3 mm measured at the body section, and
• wherein the device, in the expanded configuration, has a radial resistive force greater than about 0.30 N/mm at 1 mm of compression.