Blood withdrawal device

Details Blood withdrawal device Blood withdrawal device

A - Human Necessities

61

M

A61M 5/34 (2006.01) A61B 5/15 (2006.01) A61B 5/14 (1995.01)

Patent

CA 2141152

A blood withdrawal device has a withdrawal tube 2, a stopper 14 which closes the front end of the tube, can be pierced, and is retained by a stopper cap 5 which overlaps the tube with a collar 15, and a double cannula 3 which receives the stopper cap in a guide sleeve 4. The stopper cap or the guide sleeve has at least one prominence 17 which at least indirectly deforms the stopper cap in the collar region when this is pushed into the guide sleeve, the guide sleeve is rigid and at least the prominence of the stopper cap is non-rigid, preferably flexible. By this means, on the one hand secure holding of the guide sleeve and stopper cap is possible, without a catch or screw connection, and on the other hand it is possible, in a simple, gentle manner, to couple or connect several withdrawal tubes one after another to a cannula remaining in a vein, without jerking, and to fill several withdrawal tubes with blood.

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