	US 12,213,657 B2
	Devices and methods for tissue retraction
Ryan V. Wales, Northborough, MA (US); Ramon Estevez, Lowell, MA (US); Nicholas J. Mazzola, Hudson, MA (US); Beth Benesh, Marlborough, MA (US); and Nelly Nganga, Lowell, MA (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Oct. 1, 2018, as Appl. No. 16/148,880.
Claims priority of provisional application 62/566,596, filed on Oct. 2, 2017.
Prior Publication US 2019/0099172 A1, Apr. 4, 2019
Int. Cl. A61B 17/02 (2006.01); A61B 1/018 (2006.01); A61B 17/08 (2006.01); A61B 17/29 (2006.01); A61B 17/00 (2006.01); A61B 17/10 (2006.01); A61B 90/00 (2016.01); A61B 90/92 (2016.01)

CPC A61B 17/0218 (2013.01) [A61B 1/018 (2013.01); A61B 17/083 (2013.01); A61B 17/29 (2013.01); A61B 2017/00269 (2013.01); A61B 2017/00296 (2013.01); A61B 2017/0034 (2013.01); A61B 2017/00862 (2013.01); A61B 2017/0287 (2013.01); A61B 17/10 (2013.01); A61B 2090/037 (2016.02); A61B 90/92 (2016.02)]

19 Claims

1. A device configured and adapted to be mounted over a distal end of a tubular device having a lumen extending therethrough, the device comprising:

a cap extending along a longitudinal axis and having a proximal end, a distal end, and a wall with an inner surface defining a lumen through the cap sized to fit over the distal end of the tubular device-to hold the proximal end of the cap on the distal end of the tubular device with the cap lumen communicating with the tubular device lumen; and

an extension member having a proximal end fixedly mounted to the distal end of the cap along the inner surface of the wall of the cap offset from the longitudinal axis of the cap lumen;

wherein the extension member is configured to engage an elongated first tissue engagement member having a first end and a second end a length therebetween, and to hold the first end of the elongated first tissue engagement member in a mounted position with a terminal end of the first end of the elongated first tissue engagement member radially outward of the inner surface of the wall of the cap-and the length of the elongated first tissue engagement member extending radially-inwardly toward the second end of the elongated first tissue engagement member and across the cap lumen to be grasped by a grasping member translated through the tubular device lumen and the cap lumen,

further comprising the first tissue engagement member, wherein the first tissue engagement member has a first end and a second end, the extension member engages the first end of the first tissue engagement member, and the first end of the first tissue engagement member is formed such that the first tissue engagement member may be slid off the extension member by the grasping member as the grasping member is extended distally out of the tubular member.