Stent system

A stent assembly configured to be positioned within venous sinuses of a patient, the stent assembly comprising:

• a patency zone including a patency zone structure configured to provide a patency radial force to a venous sinus narrowing of the patient;
• an inlet zone distal to the patency zone, the inlet zone including an inlet zone structure configured to provide an inlet radial force, less than the patency radial force, to the venous sinuses of the patient;
• a transition structure distal to the patency zone structure and proximal to the inlet zone structure, wherein the transition structure is configured to provide a transition radial force less than the patency radial force and greater than the inlet radial force;
• a first link extending from and coupling the patency zone structure to the transition structure;
• and
• a second link extending from and coupling the transition structure to the inlet zone structure,
• wherein:
• the stent assembly is configured to self-expand from a constrained state into an unconstrained state,
• when in the unconstrained state, a first cross-sectional shape of the patency zone is circular or a rounded shape, and a second cross-sectional shape of the inlet zone is non-circular and/or triangular.

A stent assembly configured to be positioned within a vessel of a patient, the stent assembly comprising:

• a patency zone including patency zone structures, each of the patency zone structures (i) comprising a strut having a first width and (ii) configured to maintain a first cross-sectional shape;
• an inlet zone distal to the patency zone, the inlet zone including inlet zone structures, each of the inlet zone structures (i) comprising a strut having a second width different than the first width and (ii) configured to maintain a second cross-sectional shape different than the first cross-sectional shape;
• transition structures positioned between the patency zone structures and the inlet zone structures, each of the transition structures comprising a strut having a transition width between the first width and the second width;
• a first link extending from and coupling one of the patency zone structures to a first one of the transition structures;
• and
• a second link extending from and coupling a second one of the transition structures to one of the inlet zone structures,
• wherein:
• a cross-sectional dimension of the patency zone structures and the inlet zone structures is equivalent,
• the stent assembly is configured to self-expand from a constrained state into an unconstrained state, and
• when in the unconstrained state, the first cross-sectional shape of the patency zone is circular or a rounded shape, and the second cross-sectional shape of the inlet zone is non-circular and/or triangular.