Patent ID: 6843775
Filing Date: 2005-01-18
Classification: A61B,A61M

Abstract:
1. A blood drawing system for drawing blood from a blood vessel of a living being, the system comprising: a) a first conduit through which blood drawn from a blood vessel can flow, said first conduit having a closure member for selectively closing the first conduit at a closure site thereof; b) a first collection vessel for receiving blood and having an exteriorly-operable pressure controller for application of negative or positive pressure within said first collection vessel; c) a hollow-shaft member; d) a second conduit having a first end in fluid communication with the first conduit and a second end in fluid communication with the first collection vessel; and e) a third conduit having a first end in communication with the first conduit and a second end in communication with the hollow shaft member; wherein when said first conduit is closed by said closure member and positive pressure is applied within the first collection vessel by the pressure controller, liquid is transferred from the first collection vessel through the hollow shaft member.