Patent ID: 8753323
Filing Date: 2014-06-17
Classification: A61F,A61M

Abstract:
1. A vacuum surge suppressor, for a surgical aspiration system that includes a surgical instrument and a vacuum pump, the vacuum surge suppressor comprising: a first fluid path for coupling to the surgical instrument; a filter attached to the first fluid path, the filter defining a filter longitudinal axis that is oriented vertically with respect to gravity so that a downstream direction at the filter is upwards; a flow restrictor coupled to the filter, the flow restrictor comprising an orifice defining a fixed orifice inner diameter in the range 0.005 to 0.025 inches and a fixed orifice length in the range 1 to 2 inches, the filter being disposed upstream of the flow restrictor; a second fluid path for coupling to the vacuum pump, the second fluid path connected to the flow restrictor and disposed downstream of the flow restrictor, the second fluid path defining a path internal pressure; a third fluid path coupled to the filter and connected to the second fluid path, bypassing the flow restrictor; and a valve in the third fluid path that obstructs flow in the third fluid path in response to the path internal pressure.