A medical device includes an elongate member and a delivery member. The elongate member has a retention portion and defining a lumen. The retention portion has a first configuration and a second configuration different than the first configuration. The retention portion is biased to the first configuration. The delivery member has a collapsed configuration and an expanded configuration. The delivery member is configured to be disposed within the lumen of the elongate member to move the retention portion of the elongate member from the first configuration to the second configuration.