Disclosed are apparatus and method for forming passage extending along a plane crossing an organ's volumetric region from an entry point to an opposing exit point at a surface of the organ, and for passing a tension member around the volumetric region by pulling the tension member from the exit point to the entry point through the passage. The apparatus can include a rigid outer tube with a tip for penetrating the organ and reach a penetration depth； an inner needle with elastic body configured to pass straightened through outer tube lumen and to partially protrude and voluntarily flex to a curved form greater than the diameter of the volumetric region； and a tension member passer with a pulling portion for engaging with portion of tension member and for pulling the tension member when withdrawn.
