A medical fluid suctioning device for selectively applying varied levels of suction pressure at a device-tissue interface includes a direct "trumpet"-type control mechanism in conjunction with a "venturi"-type control. A valve manifold is adapted to couple a vent pathway and a suction pathway simultaneously...http://www.google.com/patents/US20020173744?utm_source=gb-gplus-sharePatent US20020173744 - Medical suctioning apparatus and methods of use
