Tine anchors 76 may be deployed from a retracted state, as in FIG. 7A, to a deployed state, as in FIG. 7B. Tine anchors 76 may be pre-bent so that they readily take on a pre-determined shape when deployed out of catheter body 72, and anchors 76 may be made of metal, such as stainless steel or shape-memory metal such as Nitinol, polymers, or any other suitable material.