| 摘要 |
FIELD: medicine; medical devices for blood taking and transfusion. ^ SUBSTANCE: device for taking blood has tube which has case and internal cavity, metal injection needle and polymer needle for connecting tube with blood container. Device is disposed in package. Injection needle is connected directly or through joint to one end of case of tube. Needle for connecting tube with blood container is connected directly or through joint to other end of tube's case. Tube's case has at least two areas, which have different values of extension strength or/and different values of maximal forces, which strengths can be endurable for identical elements of the areas without being destroyed. Device can be used when there is no option for making pressure drop in the blood vessel/blood taking device-blood container assembly as the possibility of eased shortening of blood is provided before blood taking resulted in reduce in blood's dynamic resistance. Blood losses are reduced when small volume of blood is taken due to reduction of volume of tube before blood taking. Special lamp can be used for closing tube during procedure. Internal surface of the device can be easily accessed. ^ EFFECT: improved efficiency of operation; improved reliability; reduced time for reduction in length of device. ^ 14 cl, 2 dwg |
