Method and apparatus provided by the invention are treated cirrhotic patients with portal hypertension or are shunted or new channel by establishing in liver, used from the portal vein and vena hepatica of patient with intravascular imaging capability and pressure sensing capabilities or positioning mechanism. Integrate that intravascular imaging facilitates precision flow divider and pressure measurement can be proved to be successful shunting creation. Device may include the vena hepatica that conduit has an extended ontology insertion patient, intravascular imaging devices and the upper extension of needle outlet distal end portions point, and syringe needle is arranged inner cavity in the catheter and is configured with and releases outlet and separate side extension, and wherein needle includes pressure sensor.
