Patent ID: 8911462

Claim:
A one-piece cap and lancet comprising: (i) a hollow body cap including an internal space, wherein a lancet is movable within the internal space, wherein the internal space forming a multi-step structure defines a shoulder for an elastic element to stop the forward movement of the lancet, wherein an opening for a needle is defined at the front end of the hollow body cap, and wherein a projection for the lancet is defined at the rear end of an inner circle of the hollow body cap; (ii) a lancet body movably contained within the internal space of the hollow body cap, wherein the needle is fixed at the front end of the lancet body, wherein a lancet holding member is formed at the rear end of the lancet body for preventing an escape of the lancet, and wherein the needle moves along a predetermined path through an opening for allowing the needle to advance therethrough; (iii) an elastic element providing elasticity for the movement of the lancet together with the lancet body contained in the internal space of the hollow body cap, and (iv) a painless impulse generator detachably connected to the hollow body cap, with the painless impulse generator comprising a power supply supplying a pulse power through an instantaneous pulse wave circuit, and an impulse generator switch controlling the pulse power of said power supply, wherein the elastic element providing elasticity for the movement of the lancet is defined between the shoulder for the elastic element and the lancet holding member of the lancet body, wherein the elastic element is detachable from the lancet forming a shape of a jar whose middle is convex to bend toward the lancet body, and wherein one end of the elastic element is connected to the shoulder for the elastic element and the other end is connected to the lancet holding member, and wherein the elastic element is comprised of two or more rings overlapped to strengthen elasticity.