CUTANEOUS INJECTION DELIVERY UNDER SUCTION

摘要

The delivery of a fluid (32) cutaneously is effected by generating a suction force on a surface of a housing (22). A surface of a cutaneous layer (28) is received under the suction force about which the proximal end of a needle (2 6) thereby to pierce the cutaneous surface and to effect an injection of fluid. There is generated a suction force to operate the movement of a needle in th e housing. The needle is moved under the suction force from the housing thereb y to permit piercing a cutaneous layer. The bladder (30) for containing fluid is emptied under the suction into the distal end of the needle and thereby perm it the expulsion of fluid through the proximal end of the needle for injection below the cutaneous layer.