Patent ID: 8177741

Claim:
A retention device, comprising: a catheter having an outer circumferential surface, a proximal portion and a distal portion and a central lumen defined therethrough; a balloon mounted on the catheter between the proximal portion and the distal portion, the balloon connected to a fluid path in a proximal portion of the catheter; at least one superelastic wire contained in the balloon and in at least one lumen within the catheter, wherein the at least one wire extends from the proximal portion through the balloon to the distal portion, wherein at least one end of the wire comprises a retention feature that is anchored to a portion of the catheter, wherein at least a portion of the at least one wire is biased into a radially expanded configuration outside of the outer circumferential surface of the catheter to assist the inflation of the balloon and assist in maintaining the balloon in the expanded state; and an obturator, wherein the catheter is configured to receive a distal tip of the obturator pressed against a distal tip of the catheter within the distal portion, wherein the force applied to the distal tip of the catheter straightens the at least one wire from the radially expanded configuration allowing the balloon to maintain a collapsed configuration, wherein when the balloon is inflated, the at least one superelastic wire is partially pulled from the at least one lumen and extends distally from the catheter and is not wholly retained within the catheter.