| 摘要 |
The cannula (3) is encased by an end-side closed, elastic, hose-type valve rubber (11) with air. The holder (1) is provided with a section fixing the valve rubber by its outer cover. The holder section is a deformable clamp part (12). The double cannula (3) at the front and the rear is formed with a cutting edge (4,5). The rear cannula end (6) extends into a guide socket (7) of the holder, whilst the front cannula end (8) extends out of the holder (1) and can be used for blood withdrawal from the vein of a patient. For blood withdrawal, the guide socket is pushed onto a corresponding blood withdrawal tubelet. |
