DUET STENT DEPLOYMENT SYSTEM AND METHOD OF PERFORMING A TRANSJUGULAR INTRAHEPATIC PORTOSYSTEMIC SHUNTING PROCEDURE USING SAME

摘要

A duet stent deployment system is used in a transjugular intrahepatic portosystemic shunt procedure. The device has a versatility of adjusting to a patient's anatomy in vivo. The system includes exactly two self expanding stents mounted on an inner catheter and covered by an outer sheath that is moved among a pre-deployment configuration, a first deployment configuration and a second deployment configuration to position the stents in an overlapping configuration from the portal vein, through a shunt and into the hepatic vein, and terminating at the junction with the vena cava.

主权项

1. A duet stent deployment system comprising:
an inner catheter; exactly two stents mounted on a distal segment of the inner catheter, and the two stents include a primary stent and a secondary stent; an outer sheath slidably mounted on the inner catheter, and being movable along an axis of the inner catheter from a predeployment configuration to a first deployment configuration, and then from the first deployment configuration to a second deployment configuration; the primary and secondary stents being covered by the outer sheath in the predeployment configuration; the primary stent being uncovered but the secondary stent being covered by the outer sheath in the first deployment configuration; the primary and secondary stents being uncovered by the outer sheath at the second deployment configuration; wherein the primary stent includes a sleeve covering, and the secondary stent is longer than the primary stent, and both the primary stent and the secondary stent are self-expanding stents.