An apparatus includes an elongate member having a distal end portion and a proximal end portion. The elongate member defines a longitudinal axis. The distal end portion of the elongate member defines a notch having a face defining an axis. The axis of the face and the longitudinal axis define an acute angle with respect to a first direction along the longitudinal axis. The notch is configured to retain a loop of a suture when the elongate member is moved through a tissue of a patient in the first direction along the longitudinal axis. The notch is configured to release the loop of the suture when the elongate member is moved through the tissue of the patient in a second direction different than the first direction. The suture has at least one tissue anchor configured to be disposed within the tissue of the patient.