Patent ID: 6689141
Filing Date: 2004-02-10
Classification: A61B

Abstract:
A deployment mechanism for deploying a filamentous endovascular device having a proximal end, comprising:an elongate, flexible, hollow deployment tube having an open proximal end, a distal section terminating in an open distal end, and a lumen defined between the proximal and distal ends; a retention sleeve fixed around the distal section of the deployment tube and having a distal extension extending a short distance past the distal end of the deployment tube; and a coupling element attached to the proximal end of the endovascular device and releasably held within the distal extension of the retention sleeve proximate the distal end of the deployment tube so as to be displaceable from the retention sleeve in response to fluid pressure applied to the coupling element through the lumen and the distal end of the deployment tube; wherein the coupling element is formed with a purge passage that is dimensioned so as to provide a substantial restriction to the flow therethrough of a fluid having a viscosity that is substantially greater than that of saline solution.