An insertion device for use with an insertion set is provided. The insertion device includes a first housing and a first member received in the first housing and movable relative to the first housing between a first position and a second position. The insertion device also includes a second housing substantially surrounding at least a portion of the first housing such that a gap exists between the first housing and the second housing. The first member is received in the gap in the second position. The second housing has at least one locking arm to couple the insertion set to the second housing. The first member is movable from the first position to the second position to uncouple the insertion set from the housing.
