APPLICATOR

摘要

An applicator includes a piston plate, a non-linear coil spring, a casing, a lock means and a release means. The casing includes a tubular main body part that houses therein the piston plate and the non-linear coil spring, and a cover part that is arranged on one end side of the main body part. The cover part and the piston plate sandwich the non-linear coil spring there between. The lock means locks the piston plate with the casing such that the piston plate is held at a retraction position thereof on the cover part side in a state where the cover part and the piston plate compress the non-linear coil spring. The release means releases a locked state where the piston plate is locked with the casing by the lock means and where the cover part and the piston plate compress the non-linear coil spring.

主权项

1. An applicator for transferring an active ingredient into a body through a skin by a puncture in the skin with microneedles, the applicator comprising:
a piston plate wherein the microneedles are arranged on one main surface side of the piston plate; a non-linear coil spring that is arranged on another main surface side of the piston plate and exerts a biasing force on the piston plate; a casing including:
a tubular main body part that houses therein the piston plate and the non-linear coil spring; anda cover part that is arranged on one end side of the main body part, the cover part and the piston plate sandwiching the non-linear coil spring there between; lock means for locking the piston plate with the casing such that the piston plate is held at a retraction position thereof on the cover part side in a state where the cover part and the piston plate compress the non-linear coil spring; and release means for releasing a locked state where the piston plate is locked with the casing by the lock means and where the cover part and the piston plate compress the non-linear coil spring, wherein if the locked state is released by the release means, the piston plate is moved, by the biasing force of the non-linear coil spring, inside of the main body part to reach a position for action on the skin.