An ideal catheter: the simple curve.
A complex variety of catheter shapes has developed in the short period since Seldinger first introduced percutaneous angiography. The author has discovered in the course of several thousand selective arteriograms that only only one cartheter is needed: the original simple curve.
D000792:Angiography / Q000295:instrumentation*; D002404:Catheterization / Q000295:instrumentation*