Patent ID: 11864792
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 6:
7. A surgical cannula assembly, comprising:
a cannula housing;
a cannula member defining a longitudinal axis, and a longitudinal lumen configured to permit passage of a surgical object, the cannula member having a plurality of longitudinal ribs on an outer surface thereof, adjacent longitudinal ribs of the plurality of longitudinal ribs defining longitudinal channels therebetween that open distally into an annular recess;
a conduit at least partially positioned within a first longitudinal channel of the longitudinal channels of the cannula member;
a fluid port in fluid communication with the conduit and configured for coupling to a source of inflation fluid; and
an outer sleeve coaxially mounted about the cannula member, the outer sleeve having an expandable balloon in fluid communication with the conduit, the expandable balloon configured to transition from an initial unexpanded condition to an at least partially expanded condition upon passage of inflation fluid from the fluid port, through the conduit and within an internal volume of the expandable balloon.