INTEGRATED SPRING-ACTIVATED BALLISTIC INSERTION FOR DRUG INFUSION DEVICE

PROBLEM TO BE SOLVED: To provide an improved infusion set that can facilitate more satisfactory drug absorption while delivering a drug into an intradermal space and maintaining a certain degree of comfort for a user.SOLUTION: The infusion set includes an integrated ballistic inserter that can insert a needle at a controlled high rate of speed into a depth where a content is delivered up to 3 mm from an upper side of the skin surface, and a skin securing adhesive layer to secure the skin surface at an insertion site such that the inserter can insert a needle without a risk of tenting of the skin surface. A driving spring of the ballistic inserter is captured within the ballistic inserter, and can be released by user operation, to insert the needle at such a controlled rate of speed.