US 9,808,270 B2
Medical retrieval devices and methods
Richard C. Tah, Framingham, MA (US); Ronald Ciulla, Westford, MA (US); and Jozef Slanda, Milford, MA (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Dec. 15, 2014, as Appl. No. 14/570,230.
Claims priority of provisional application 61/920,614, filed on Dec. 24, 2013.
Prior Publication US 2015/0173783 A1, Jun. 25, 2015
Int. Cl. A61B 17/22 (2006.01); A61B 17/221 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 2017/2215 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A retrieval device, comprising:
a sheath having a distal end and a longitudinal axis;
a plurality of support members extending distal of the distal end, the support members each having at least one distal loop, wherein at least one of the distal loops of the support members forms at least one biasing coil;
a hollow member extending distal of the distal end; and
a movable member extending distally from the hollow member and slidably extending through the distal loops of the support members,
wherein a first plurality of the support members are longitudinally movable relative to the sheath, and wherein a second plurality of the support members are longitudinally fixed relative to the sheath.