체내에 액체를 주입하거나 배출하기 위해 요도, 혈관 등에 삽입하는 가느다란 관.
A thin, flexible tube inserted into a body cavity, duct, or vessel to allow the passage of fluids or to distend a passageway.
예문:
"The nurse carefully inserted a urinary catheter to help the patient drain their bladder after surgery."
"A cardiac catheter is often used to diagnose heart conditions by visualizing the blood vessels."
"Proper sterilization of the catheter is essential to prevent hospital-acquired infections."