Medical Stent
Description:
This item is only usable in-game if ‘Hardmode Aortic Rupture’ is enabled in the Configuration menu.
The fourth step in 
Aortic rupture surgery. The stent will not work if you have not used the 
Endovascular balloon beforehand. Using the medical stent will cure 
Aortic rupture, and also remove the Endovascular Balloon from the patient.