Illustration of an<unk>  catheter inserted in the left radial artery and covered with a dressing<unk>  catheter (Seldinger technique)<unk>  catheter (Punktion technique) An<unk>  <unk> so art-line or<unk>  is a thin catheter inserted into an artery.
Arterial line
Central venous catheter
Peripheral venous catheter
Quinton catheter
Hickman line
Catheter
French catheter scale
Trocar