| 摘要 |
The device (10) is cylindrically shaped and made of clear plastic. A piston (14) moved on a piston rod (12) with a small handle element (16) is accommodated inside the hollow device (10). The piston rod (12) is guided through an opening (18) opposite the needle holding end. A sealing ring (20) or collar is positioned around the opening (18) and protects the device (10) from invading bacteria as long as the piston (14) is located in the closest possible position in relation to the needle carrying end. |
