US 9,808,251 B2
Tissue resection devices and related methods
Laura Elizabeth Firstenberg, Worcester, MA (US); and Colby Harris, Weston, MA (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Aug. 18, 2014, as Appl. No. 14/461,857.
Claims priority of provisional application 61/871,063, filed on Aug. 28, 2013.
Prior Publication US 2015/0066046 A1, Mar. 5, 2015
Int. Cl. A61B 17/12 (2006.01); A61B 17/3205 (2006.01); A61B 18/14 (2006.01); A61B 17/00 (2006.01); A61B 18/00 (2006.01)
CPC A61B 17/12 (2013.01) [A61B 17/32056 (2013.01); A61B 18/1492 (2013.01); A61B 2017/00269 (2013.01); A61B 2018/00107 (2013.01); A61B 2018/00166 (2013.01); A61B 2018/00214 (2013.01); A61B 2018/141 (2013.01); A61B 2018/1465 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A medical device, comprising:
a delivery member having at least two lumens extending therethrough, each lumen of the at least two lumens including a rotational element therein, wherein each rotational element is configured to convert linear motion into rotational motion to expand or retract a snare element; and
the snare element including a distal snare loop and two proximally extending legs, wherein each leg is within one of the at least two lumens;
wherein the rotational element in a first lumen of the at least two lumens is configured to impart a clock-wise rotation to a first leg of the two proximally extending legs, wherein the rotational element in a second lumen of the at least two lumens is configured to impart a counter clock-wise rotation to a second leg of the two proximally extending legs, and wherein the rotational element in each of the at least two lumens includes at least one of a female helical groove and a helical mandrel.