Patent ID: 8343091
Filing Date: 2013-01-01
Classification: A61M

Abstract:
1. A method of maintaining and removing a locking fluid in an implanted catheter comprising: positioning a catheter assembly in a patient, the catheter assembly including a first lumen having a first distal end and a first proximal end with the first distal end including a two-way valve at a distal tip thereof, and a second lumen having a second distal end and a second proximal end with the second distal end extending distally beyond the first distal end and including a one-way valve at a distal tip thereof and at least one side port extending through the second lumen proximally of the distal tip; injecting the locking fluid into the first and second proximal ends at a low pressure such that the locking fluid enters each lumen without opening the respective closed distal end; withdrawing the locking fluid from the first proximal end with a first force such that the two-way valve opens to allow blood into the first lumen; and withdrawing the locking fluid from the second proximal end with a second force such that the at least one side port opens to allow blood into the second lumen.