| 主权项 |
1. A method of transporting fluid between a treatment site of a patient and a location outside of the patient, the method comprising:
providing a catheter having a first elongated fluid conduit having an outer diameter; a second elongated fluid conduit; and a terminal end locatable at the treatment site, the first elongated fluid conduit defining a fluid path to the terminal end and the second elongated conduit defining a fluid path from the terminal end, the terminal end comprising: a first fluid exchange portion defining a first outer surface and a first lumen in fluid communication with the first elongated fluid conduit, the first fluid exchange portion having at least one opening communicating between the first lumen and the first outer surface; and a second fluid exchange portion defining a second outer surface and a second lumen in fluid communication with the second elongated fluid conduit, the second fluid exchange portion having at least one opening communicating between the second lumen and the second outer surface; and a barrier having a first barrier surface and an opposing second barrier surface, the first lumen being in fluid communication with the first barrier surface and the second lumen being in fluid communication with the second barrier surface; placing the terminal end from the location outside of the patient, through a tissue opening, to a location inside of the patient at the treatment site; positioning the barrier to bias fluid flow at the treatment site to impede fluid flow in a non-preferential direction; and operating the catheter to deliver fluid to the first barrier surface; and extracting the terminal end through the tissue opening to transition the barrier from a deployed configuration to a collapsed configuration having a maximum cross-sectional dimension not exceeding the outer diameter of the catheter. |
