Arterial access from lower extremity. The common femoral artery is the only access site used in the lower extremity. Catheters used for performing coronary angiography via the femoral artery were developed by Melvin Judkins, MD; thus, the method often is referred to as the Judkins technique. This widely used method requires separate preformed catheters for the right and left coronary arteries (see the images below).
Urethral sounds/play, sometimes called sounding, is basically inserting objects (often steel sounds and catheters) into the urethra for erotic purposes. Sounds painful and unpleasant to most, but some people get a kick out of this.
Which is how I came to be sitting in my bedroom one night, sliding a long metal tube into my penis. Urethral sounding rods are a relatively obscure and intimidating member of the sex toy family, usually a long, slender metal cylinder meant to slide into the urethra to create a pleasing dilation effect. Sizes range from 4 to 17 millimeters in circumference, though there is some variation.