US 11,864,953 B2
Smoke evacuating tissue guard for tissue removal and other surgical procedures
Jacob C. Baril, North Haven, CT (US); Matthew A. Dinino, North Haven, CT (US); and Saumya Banerjee, North Haven, CT (US)
Assigned to COVIDIEN LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Jan. 23, 2020, as Appl. No. 16/750,150.
Prior Publication US 2021/0228305 A1, Jul. 29, 2021
Int. Cl. A61M 39/02 (2006.01); A61B 90/00 (2016.01); A61B 18/00 (2006.01); A61B 17/34 (2006.01)
CPC A61B 90/05 (2016.02) [A61B 2017/348 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00744 (2013.01); A61B 2218/008 (2013.01); A61M 2039/022 (2013.01); A61M 2039/0279 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A smoke evacuating tissue guard, comprising:
a tubular body having an outwardly flared proximal end portion and a distal end portion, the tubular body defining a longitudinally-extending passageway;
a collar attached to the proximal end portion of the tubular body and defining an annular channel, the collar including:
an outer annular section;
an inner annular section facing the passageway and spaced from the proximal end portion of the tubular body to define a first gap therebetween; and
a lip extending radially inward from the inner annular section and spaced from the proximal end portion of the tubular body to define a second gap therebetween; and
an outlet extending from the collar and defining an inner channel in fluid communication with the annular channel, wherein the first gap is less than a diameter of the annular channel and the second gap, such that the smoke evacuation tissue guard is configured to establish a pressure differential in the first gap upon application of suction through the smoke evacuating tissue guard.