Fluid filtration device and system

A fluid filtration system for use during minimally invasive surgical procedures involving a surgical site having higher than ambient pressure, the system comprising:

• a filter body with a site side and an outlet side;
• a first fluid conduit extending between the surgical site and the filter body;
• a second fluid conduit removably attached to the outlet side of the filter body and extending between the outlet side and a vacuum source, the vacuum source generating a pressure of approximately −100 to −600 mm Hg;
• a secondary filter configured and arranged to removably attach to the outlet side of the filter body, the secondary filter having one or more openings for releasing a filtered gas to atmosphere;
• wherein the fluid filtration system is capable of alternating between an active and passive configuration by removing the second fluid conduit and attaching the secondary filter.

A medical fluid filter system, comprising:

• a housing comprising a surgical site side and an outlet side:
• a liquid trap chamber having a volume;
• a filter media chamber;
• a filter media arranged within said filter media chamber;
• said liquid trap chamber having a liquid trap outlet port providing a fluid passageway between said liquid trap chamber and said filter media chamber;
• said liquid trap outlet port configured and arranged within said liquid trap chamber to inhibit flow of liquid from said liquid trap chamber to said filter media chamber and configured and arranged to allow gas to flow from said liquid trap chamber to said filter media chamber;
• a filter system inlet passing through said housing for intake of fluid originating from a surgical site;
• and
• a filter system outlet passing through said housing for fluid exhaust;
• a first fluid conduit extending between the surgical site and the surgical site side of the housing;
• a second fluid conduit removably attached to the housing and extending between the outlet side and a vacuum source, the vacuum source generating a pressure of approximately −100 to −600 mm Hg;
• a secondary filter removably attached to the outlet side of the housing;
• wherein the fluid filtration system is capable of alternating between an active and passive configuration by removing the second fluid conduit and attaching the secondary filter.

A fluid filtration system for use during minimally invasive surgical procedures involving a surgical site having higher than ambient pressure, the system comprising:

• a filter body with a site side and an outlet side;
• a flow selector disposed inside the body, the flow selector having a hollow body portion with an inlet defined therein;
• a filter holder disposed inside the filter body, the filter holder configured and arranged to receive filter media at a first end and having an upstanding hollow member at a second end for receiving the body of the flow selector, the hollow member having at least one opening defined therein such that rotation of the flow selector relative to the filter holder causes the at least one opening to align with a portion of the inlet in the flow selector to establish a pathway for fluid flow, the flow being adjustable depending on which portion of the inlet in the flow selector aligns with the at least one opening in the filter holder;
• a first fluid conduit extending between the surgical site and the site side of the filter body;
• a second fluid conduit configured and arranged to extend between the filter body and a vacuum source, the vacuum source generating a pressure of approximately −100 to −600 mm Hg;
• a secondary filter for releasing a filtered gas to atmosphere;
• a switching mechanism for alternating between an active and passive configuration by diverting the flow between the second fluid conduit and the secondary filter.