Patent ID: 11864953
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
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.