US 11,998,707 B2
Flow control stent
Michael Walsh, Galway (IE); Javier Palomar-Moreno, Galway (IE); Martyn G. Folan, Galway (IE); Emma J. Mooney, Galway (IE); Shane Moylan, Galway (IE); Thomas Holly, Galway (IE); David Hegarty, Galway (IE); and Darren Curran, Galway (IE)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Oct. 2, 2018, as Appl. No. 16/149,234.
Claims priority of provisional application 62/567,679, filed on Oct. 3, 2017.
Prior Publication US 2019/0099589 A1, Apr. 4, 2019
Int. Cl. A61M 27/00 (2006.01); A61B 17/11 (2006.01); A61B 17/12 (2006.01)
CPC A61M 27/002 (2013.01) [A61B 17/11 (2013.01); A61B 17/1114 (2013.01); A61B 17/12036 (2013.01); A61B 17/1204 (2013.01); A61B 17/12172 (2013.01); A61B 2017/1139 (2013.01); A61B 17/12177 (2013.01)] 18 Claims
OG exemplary drawing
 
1. 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;
wherein:
the elongate tubular body has an unexpanded configuration, and an expanded configuration in which the proximal portion of the elongate tubular body expands into a proximal retention member and the distal portion of the elongate tubular body expands into a distal retention member leaving a cylindrical saddle region extending therebetween; and
the elongate tubular body includes a constricted portion formed by a plurality of filament loops, each loop having a radially-inwardly directed distal free end, the distal free ends of the filament loops overlapping one another to form a tapered cone shape with the loops movable with respect to one another between a first diameter configuration in which the loops overlap one another to inhibit flow through the saddle region, and a second diameter configuration larger than the first diameter configuration to provide an open flow or access passage therethrough.
 
7. 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.
 
10. 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.