Patent ID: 8556872
Filing Date: 2013-10-15
Classification: A61M

Abstract:
1. A high volume suction tip, comprising: a tubular body with peripheral side wall, a functional orifice, and a vacuum source end; a vacuum release orifice comprising an aperture in a wall of the tubular body, wherein the aperture is between the functional orifice and the vacuum source end; a plurality of tubes within a lumen of the tubular body, wherein the tubes form a physical barrier to prevent evacuation of a suctioned material larger than a diameter of the tubes, have a longitudinal axis substantially parallel to a longitudinal axis of the tubular body, and provide channels within and around the tubes for transmitting the suctioned material from the functional orifice to the vacuum source end, and wherein the tubes further comprise a surface treatment selected from at least one of micro-scale and nano-scale structures, and wherein: if the functional orifice is open, an exterior wall of a first tube engages an interior wall of the tubular body and seals the vacuum release orifice, and if the functional orifice is at least partially occluded, a compressible side wall of a second tube collapses inwardly to disengage the exterior wall of the first tube from the interior wall of the tubular body and open the vacuum release orifice, to maintain vacuum flow toward the vacuum source end of the tubular body through an accessory channel between the exterior wall of the first tube and the internal surface of the tubular body.