The present invention relates to an apparatus for subcutaneously delivering a material the apparatus comprises an elongate delivery tube (490) with first and second elongate tube members (492, 494), the tube members (492, 494) forming the delivery tube (490) when in the engaged closed position, the delivery tube (490) having a chamber (520) configured to accommodate a material (270) there within an elongate pusher member (500) having a distal portion (528) configured to slidably extend through at least a portion of the delivery tube (490) so as to push at least a portion of the material (270) out of the delivery tube (490) the apparatus further comprises a flexible collar (560) which is disposed about the tube members (492, 494).
