During the angioplasty procedure, a thin flexible tube (catheter) is inserted through an artery in the groin, arm, or wrist and is carefully guided into the artery that is narrowed. After the tube reaches the narrowed artery, a small balloon at the end of the tube is inflated.
Saddlebags is a word to describe the bulging areas of fat on the upper outer thighs of ladies, in a way that resembles saddle bags being carries on a horse.
The metal saddle holder is missing on this. The factory saddle slot is 1/4 wide, while stock saddles are in the 1/8 or 3/16 range. Unless you can find a replacement saddle holder (which holds a 1/8 saddle), you'll have to fill the double wide gap so that a standard saddle will fit. Chances of finding a saddle holder are slim to none as they haven't been used since the 1980's.