US 12,226,115 B2
Tissue resecting instrument
Alan P. Gannon, Amesbury, MA (US); Dalia P. Leibowitz, Cambridge, MA (US); and Peter F. Marshall, Bolton, MA (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 5, 2022, as Appl. No. 17/960,605.
Application 17/960,605 is a division of application No. 16/852,752, filed on Apr. 20, 2020, granted, now 11,596,429.
Prior Publication US 2023/0027186 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/32 (2006.01); A61B 17/00 (2006.01); A61B 17/42 (2006.01); A61B 34/37 (2016.01)
CPC A61B 17/32002 (2013.01) [A61B 2017/0023 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00734 (2013.01); A61B 2017/320032 (2013.01); A61B 2017/4216 (2013.01); A61B 34/37 (2016.02); A61B 2217/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An end effector assembly of a tissue-resecting device, the end effector assembly comprising:
an outer shaft having a proximal end portion and a distal end portion, the distal end portion of the outer shaft defining a window in communication with an interior of the outer shaft;
a drive wire extending through the interior of the outer shaft, the drive wire including a body and having a distal end portion;
a distal cutting tip disposed within the interior of the outer shaft and at least partially overlapping the window, the distal cutting tip defining a lumen and including a plurality of teeth extending along a portion of a length of the distal cutting tip, wherein at least a portion of the distal end portion of the drive wire extends into and is fixed within the lumen of the distal cutting tip with a distal end of the distal end portion of the drive wire disposed distal to a distal-most tooth of the plurality of teeth to thereby fix the distal cutting tip relative to the drive wire such that rotation or oscillation of the drive wire relative to the outer shaft rotates or oscillates the distal cutting tip relative to the outer shaft to cut tissue extending through the window;
a hub housing engaged with the proximal end portion of the outer shaft; and
a driver disposed within the hub housing, the driver engaged with a proximal end portion of the body of the drive wire, the drive wire having a transverse finger configured to engage the driver, the driver configured to be driven to rotate relative to the hub housing to thereby rotate the drive wire and distal cutting tip within and relative to the outer shaft.