The invention relates to medicine, namely to the lancing device and a device for blood sampling.Known lancing device for taking blood samples, as described in the patent for invention RU 2506898, IPC A61B5 / 15, 2005. The disadvantage of this device for taking blood samples is the absence of combining in a single device the piercing element and into the blood collection tube element open blood sampling affecting the quality of the blood sample, the risk of infection of medical personnel.The technical result of the utility model is to combine in one device the piercing member and the taking of blood into the test tube, closed blood collection, which increases the quality of the blood sample, reducing the risk of infection of medical personnel.Said technical result is achieved in that the device for taking capillary blood comprising:The body 1 containing inside the channel open at both ends, wherein one end of the channel ends open chamber 2 for installation tubes 3 so that part of tube 3 protrudes beyond the casing 1, the other end of the duct ends narrow spout 4 with a slit 5 for installation in valve accumulation of blood capillary 6, the housing 1 is made of transparent polymeric materialMounted in the open chamber 2 of the body 1 traversed through bilateral hollow needle 7, the cam mechanism comprising a fixed relative to the housing 1, a housing 18 with a through hole and disposed inside the hole uniformly on the apertures circumferentially fixed relative to the housing 18, guide cams 19 and disposed inside the hole uniformly on the hole circle between the guiding cams 19 through one guide cam 19 fixed relative to the housing 18, displacement limiters 20, wherein the radius circumferentially formed faces limiting displacement 20 facing inward of the through hole of the body 18, larger than the radius circle formed by the edges of guide cams 19 facing inwardly of the through hole of the body 18, but smaller than the radius of the circumference of the through hole
