US 11,904,087 B2
Passive surgical access port filtration fittings
Steven Lathers, Littleton, CO (US); and Mahesh Krishnamoorthy, Parker, CO (US)
Assigned to Conmed Corporation, Largo, FL (US)
Filed by Conmed Corporation, Utica, NY (US)
Filed on Apr. 22, 2021, as Appl. No. 17/237,700.
Claims priority of provisional application 63/150,457, filed on Feb. 17, 2021.
Prior Publication US 2022/0257877 A1, Aug. 18, 2022
Int. Cl. A61B 17/34 (2006.01); A61M 13/00 (2006.01)
CPC A61M 13/003 (2013.01) [A61B 17/3423 (2013.01); A61B 2017/3419 (2013.01); A61B 2217/005 (2013.01); A61M 2205/75 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A cap for a trocar assembly comprising:
a housing configured to be removably attached to a proximal portion of a trocar, wherein the housing includes a flow passage therethrough from a distal end of the housing to a proximal opening of the housing;
a filter medium within the housing spanning the flow passage for filtration of flow through the flow passage; and
a seal extending circumferentially around the flow passage radially outward of the flow passage, wherein a first rim is defined in the housing about the proximal opening and a second rim axially spaced apart from the first rim is positioned within the flow passage, the second rim being defined about an intermediate opening of the flow passage, wherein a first rim is defined in the housing about the proximal opening and a second rim axially spaced apart from the first rim is positioned within the flow passage, the second rim being defined about an intermediate opening of the flow passage, wherein the distal side of the second rim is angled conically to converge in a proximal direction.