Patent ID: 7942897

Claim:
A closure device for closing an opening in a body cavity, comprising: an elongate delivery member having a distal end and a proximal end; a closure component removably connected to the distal end of the delivery member, the closure component including a collapsible backing movable between a non-collapsed delivery position, in which the backing tapers continuously from a proximal end to a distal end to form a generally conical shape with a center portion of the backing distally spaced from a periphery of the backing, and a collapsed deployed position, in which the backing center portion is collapsed proximally toward the backing periphery to have a generally disc shape, and a plurality of fibrous tissue engaging members disposed on the backing and oriented in a non-engaging orientation when traveling in a distal direction and in an engaging orientation when traveling in a proximal direction, the fibrous tissue engaging members entangling the backing when the backing is in the collapsed position; and a collapse actuator releasably coupled to the collapsible backing, the actuator having a detachable distal end that is received within a distal aperture in the closure component and extends distal to the distal aperture when the closure component is in the non-collapsed position, the collapse actuator being operable to move the collapsible backing from the non-collapsed position to the collapsed position, and wherein the detachable distal end of the collapse actuator is configured to assume a deformed profile solely in response to a sufficient proximal force applied to the collapse actuator, the deformed profile permitting the detachable distal end to pass proximally through the distal aperture and thereby detach from the collapsed closure component.