Flow control stent

A medical device, comprising:

• an elongate tubular body comprising a proximal portion, a distal portion, and a length therebetween, the elongate tubular body defining a lumen along the length, the elongate tubular body having an unexpanded configuration, and an expanded configuration wherein the proximal portion expands into a proximal retention member and the distal portion expands into a distal retention member leaving a cylindrical saddle region therebetween;
• and
• a plug comprising radially-inwardly directed overlapping filament loops circumferentially positioned with respect to one another in a tapered shape having distal free ends configured to move between an overlapped closed configuration in which the distal ends of the filament loops are overlapped and contact one another in a tapered configuration inhibiting flow through the cylindrical saddle region, and an open configuration allowing access through the cylindrical saddle region.

A medical device, comprising:

• an elongate tubular body formed of braided filaments and comprising a proximal portion, a distal portion, and a length extending therebetween, the elongate tubular body forming a lumen along the length, the elongate tubular body having an unexpanded configuration, and an expanded configuration wherein the proximal portion expands into a proximal retention member, the distal portion expands into a distal retention member, and a cylindrical saddle region extends therebetween;
• and
• a cone attached to or integrally formed with a portion of the elongate tubular body, wherein the cone is formed of radially-inwardly directed filament loops structurally distinct from the braided filaments of the elongate tubular body, the filament loops having radially-inwardly directed distal free ends configured to move between an overlapped conical configuration with the distal ends of the filament loops contacting one another and having a first diameter configuration limiting flow through the lumen of the elongate tubular body, and an enlarged second diameter configuration allowing access through the lumen of the elongate tubular body.