DEVICE FOR TAKING BLOOD Russian patent published in 2008 - IPC A61B5/15 

FIELD: medicine.

SUBSTANCE: device can be used for taking blood from blood-carrying vessel or from bag for donor's blood as well as for taking sample from reservoir for urine, for example. Device for receiving biological fluids of body has guiding bushing and test tube, closed with cap at its front end. Cap is provided with cylindrical dome-shaped protrusion with punched-through plug for guiding bushing to be put on. Bushing at its side turned to dome-shaped protrusion has cannula with rubber safety device. There is connecting member or front part of double cannula at opposite side. Protrusion has area made to be deformed inside. External wall of protrusion in that area and internal wall of non-deformed bushing in area being additional to it is made with contour protruding relatively rest external area of protrusion and rest internal area of bushing. Contour at putting hard bushing is capable of deforming of wall of protrusion radial inside to form connection with hard cinematic coupling, which has retaining force being larger than recovery force of rubber safety device. According to second version, internal wall formed by non-deformed bushing in area of protrusion being additional to deformed area, is made with contour which protrudes relatively rest internal area of bushing. According to third version, protrusion has it its external surface the retaining aids, radial apart one from other, intended for bushing put on protrusion. Protrusion has at least one retaining aid; it is made to have bigger diameter comparing with internal diameter of non-deformed bushing in area of connection. Retaining aids are made for being curved aside to connect with solid cinematic coupling, which has retaining force bigger than recovering force of rubber safety device.

EFFECT: reliability of retaining of guiding bushing; simple at use.

3 cl, 6 dwg