Patent ID: 7806859

Claim:
A safety lancet for taking blood comprising: a hollow barrel having an open proximal end having a narrowed section; an open distal end; an inner surface; two first slots being symmetrically defined through the barrel near the distal end; and two second slots being symmetrically defined through the barrel far away from the distal end and being respectively adjacent to the first slots to form two stopping segments and each stopping segment being mounted between the first slot and the second slot; and a detachable needle hub being mounted slidably in the barrel and having a moving base being mounted in the barrel near the proximal end of the barrel and having a first end facing the proximal end of the barrel; a second end facing the distal end of the barrel; an outer surface; a through hole being defined longitudinally through the moving base; a needle being mounted in the through hole; and two limiting resilient elements protruding symmetrically from the outer surface of the moving base toward the proximal end of the barrel and each limiting resilient element having a limiting end contacting the inner surface of the barrel; a positioning base being mounted in the barrel near the distal end of the barrel and having a first end facing the second end of the moving base and contacting the second end before the moving base being detached from the positioning base; a second end facing the distal end of the barrel; an outer surface; a push button being mounted on the second end of the positioning base; and two stopping resilient elements protruding symmetrically from the outer surface of the positioning base toward the proximal end of the barrel and each stopping resilient element having a stopping end that having an original position with the stopping ends extending respectively in the first slots and a final position with the stopping ends extending respectively in the second slots.