Patent ID: 11931072
Assignee: COVIDIEN LP
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 13:
14. A surgical access device comprising:
a housing;
an elongate tubular member extending distally from the housing, the elongate tubular member having an open distal aperture;
a first electrode circumferentially disposed about a first region of the elongate tubular member, the first electrode electrically coupled to an anode of a power supply and configured to provide airborne particulate matter with a negative electric charge; and
a second electrode circumferentially disposed about a second region of the elongate tubular member that is proximally spaced from the first region of the elongate tubular member, the second electrode electrically coupled to a cathode of the power supply and configured to attract the airborne particulate matter, the first electrode and the second electrode extending circumferentially about an outer surface of the elongate tubular member.