This invention provides, e.g., a catheter with a threaded loop type snare tool for retrieval of objects from blood vessels and/or body cavities. The snare tool of the invention provides, e.g., independently maneuverable probe wires and snare wires to encircle and releasably snare foreign objects inside human and veterinary patients. The invention further provides methods of using the catheter of the invention to retrieve objects from patients.