| 摘要 |
PROBLEM TO BE SOLVED: To provide a needleless syringe which is good in adaptability to the skin varying in shapes and hardness and lessens pain. SOLUTION: This needleless syringe is constituted of a medicinal liquid barrel 1 by providing the side abutting the skin 33 with plural projecting pointed end spherical surfaces 8 of a spherical or aspherical surface of a projecting shape provided with nozzlees 2 near vertexes and disposing intermediate recessed parts 6 at nearly the middles of the respective nozzles 2 adjacent to each other and central recessed parts 7 recessed to the central positions nearly equidistant from the respective nozzles 2 and realizes the injection with lessened pain without receiving the influence of the shapes, etc., of the skin by mounting the medicinal liquid barrel 1 at a drive assembly and dividedly injecting the medicinal liquid 3 to plural places. |
