Patent ID: 11911070
Assignee: COVIDIEN LP
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 16:
17. A seal assembly for use with a surgical cannula assembly, the seal assembly comprising:
a seal housing defining an axial opening configured for passage of a surgical object therethrough and a flow channel extending radially outwards relative to the axial opening, the seal housing having an evacuation port, the flow channel including a plurality of flow channels radially spaced relative to a seal axis of the seal housing;
an object seal configured for sealed reception of the surgical object, the object seal and the seal housing defining a flow path extending proximal of the object seal to permit passage of fluids from an underlying body cavity to exit the evacuation port; and
a filter including multiple layers of filter materials, the filter positioned in the seal housing and configured for filtering smoke or contaminants from the fluids, the filter disposed proximal of the object seal,
wherein the plurality of flow channels of the seal housing are configured to permit passage of fluids about a peripheral segment of the object seal, and the seal housing including an intermediate housing component configured for at least partially enclosing the object seal, the intermediate housing component defining a plurality of flow openings in fluid communication with flow channels of an internal seal mount to permit passage of fluids proximal of the intermediate housing component.