Catheter for radiological renal aortography and selective arteriography

Claim 1

Catheter for the injection of liquid X-ray contrast media into the vascular system of a patient for the implementation of renal aortography and selective arteriography comprising a flexible tubular catheter member, one end of said catheter member terminating into a tapered point having an opening communicating with the interior of the catheter and adapted to be introduced into the patient, said catheter member being bent through a predetermined angle in proximity to said point end so as to form a first short linear portion between said tapered point and the bend and a second lengthier linear tubular portion, said first and second linear tubular portions subtending an acute angle therebetween, and through aperture means being formed in said catheter member in the central region of its bend intermediate said first and second linear tubular portions, said aperture means being dimensioned to facilitate flow therethrough of approximately one-seventh the quantity of the contrast media flowing through said catheter, and said first short linear portion being of a length so as to provide a predetermined distance between said opening at the tapered point and said aperture means whereby said catheter is adapted to be positioned in the renal artery of the patient for concurrently effecting renal aortography and selective arteriography.