A for gathering tissue of a heart valve leaflet may include an outer tube extending in an elongation direction and having an open distal end, a capture tool movable in the outer tube between a contained position and a use position, a tissue securing component disposed at the open distal end of the outer tube, a nosecone removably assembled over the open distal end of the outer tube in a protective condition, and an actuation member joined to a central portion of the nosecone and extending into a lumen of the outer tube. The capture tool may be operable to capture tissue of the heart valve leaflet. The nosecone may have a central portion that extends across the open distal end of the outer tube and a peripheral portion surrounding the central portion and overlying an outer surface of the outer tube adjacent the open distal end.
