Abstract: A catheter for selective coronary arteriography of the left coronary artery, which catheter comprises a main part and an end section which latter comprises by turn from the main part a slightly curved part, a first short strongly curved part, a straight part, a second short strongly curved part and a short end part which is shaped to end in a taper and which catheter is provided with a perforation in the second strongly curved part or just before the beginning thereof and on the side of the catheter which is facing the onlooker when the catheter is placed with the curvatures clockwise from the main part.

Abstract: A catheter for the injection of liquid X-ray contrast media into the vascular systems of a patient, which is characterized in that the end of the catheter proximate its introduction into the patient terminates in a point and is bent at an angle near this point, and includes an outwardly directed aperture in the central region of the bend. The catheter facilitates renal aortography and selective arteriography to be simultaneously effected without the need of interchanging the catheter.