Patent ID: 6364847
Filing Date: 2002-04-02
Classification: A61B

Abstract:
A system for invasive pressure monitoring of a patient, using direct radial arterial cannulation, comprising:a blood pressure transducer adapted for disposition on an upper portion of a patient's arm; and a blood sampling device, having a fluid flow path extending therethrough, said flowpath having a proximal end and a distal end, the proximal end being adapted for communication with a pressure monitoring line which also communicates with a distal port on said blood pressure transducer, and said distal end being adapted for communication with a catheter placed in a blood vessel, said blood sampling device comprising: a fluid storage reservoir having interior walls which define a variable volume, said volume being variable between substantially nil and a maximum volume; an aperture disposed between said fluid flow path and said fluid storage reservoir, for permitting fluid communication between said fluid flow path and said fluid storage reservoir; a blood sampling cavity; and a split septum disposed on a wall defining said blood sampling cavity, for sealingly engaging a blunt cannula for the purpose of aspirating blood from the blood sampling cavity.