a clip , clip applier and method for ligating a tissue structure is provided . the applier has a two stage actuation . in the first stage , a tissue structure is positioned into the jaws of the clip applier the jaws close and lock to a preset force to compress and temporarily occlude the tissue structure . if satisfactorily positioned , the second stage is initiated in which a clip is advanced through the shaft of the clip applier in a closed position . at the distal end of the clip applier , the clip is opened slightly to capture the pre - compressed tissue structure , and is placed over the structure . the clip is then dissociated from the business end of the instrument . preferably the clip comprises two leg members disposed in close proximity to one another joined from opposing directions by a connecting element . the connecting element restricts separation of the leg members with opposing spring members so as to provide substantially uniform parallel deflection of the leg members from each other .