A medical implant introducer comprises a medical implant introducer comprising a deployment catheter and a handle assembly (50)； the deployment catheter comprising a pusher (64), an implant (68) releasably retained onto the pusher, a temporary implant retention arrangement (63, 76), a sheath (62) located coaxially around the pusher and enclosing the implant and a sheath hub (60) to which the sheath is mounted； the handle assembly comprising a handle (52, 100), a first slide (54) and a second slide (56), the first slide able to slide to retract within the second slide and the second slide able to slide to retract within the handle, the first slide including a releasable engagement arrangement (70) to engage and retain the sheath hub thereon, a removable stop pin arrangement (78) engaged between the handle and the second slide to prevent relative movement thereof, the pusher extending longitudinally through the first and second slides and being mounted to the handle, the temporary implant retention arrangement including trigger wires (63) extending through the pusher and being affixed to the second slide； whereby movement of the first slide with respect to the second slide is arranged to move the sheath hub and thereby the sheath on the pusher to expose the implant until the first slide (54) engages against the removable stop pin arrangement (78) and upon removal of the removable stop pin arrangement, the second slide (56) is arranged to move with respect to the handle (52) thereby withdrawing the trigger wires (63) and releasing the temporary implant retention arrangement.
