Patent ID: 6050986
Filing Date: 2000-04-18
Classification: A61M

Abstract:
A method of administering a liquid to a treatment site in a human body, the method comprising:providing a catheter having a proximal end, a distal end, and a lumen extending therein;providing an elongate member, slidably disposed in the lumen, and having a distal end located proximate the distal end of the catheter;providing a bolus reservoir having an outlet fluidly coupleable to a distal portion of the catheter lumen for fluid communication with the lumen;filling the bolus reservoir with fluidtransluminally positioning the distal end of the catheter into a body lumen proximate the treatment site;moving the elongate member proximally within the lumen;creating a pressure differential between the distal end of the lumen and the reservoir to move the bolus into the distal end of the lumen from the reservoir to charge the catheter with a bolus of liquid between a distal tip of the catheter and the distal end of the elongate member; andsliding the elongate member distally within the lumen of the catheter disposed in the body lumen to express the bolus into the body lumen from the distal end of the catheter.