A central line is a long, thin, hollow tube made from silicone rubber. They are also called skin-tunnelled central venous catheters. But you may hear them called by brand names such as Hickman® or Groshong® lines. They are used to give chemotherapy treatment or other medicines.
The central line is put in (tunnelled) under the skin of the chest and into a vein close by. One end of the line goes into a large vein just above the heart. The other end comes out of the chest.
The line is usually sealed with a special cap or bung. This can be attached to a drip or syringe containing your medication. There may be a clamp to keep the line closed when it is not being used.
Sometimes, the central line divides into a further 2 or 3 lines. This allows you to have different treatments at the same time.