As a reference, WallSt 24/7 recently published this analysis of the US Implantable Device market. Read the full article here. Ranked by numbers of procedures:
11. Implantable Cardioverter Defibrillators (ICDs) [133,262]
10. Artificial Hips [230,000]
9. Heart Pacemakers [235,567]
8. Breast Implants [366,000]
7. Spine Screws, Rods, and Artificial Discs (Spinal-Fusion Hardware) [413.000]
6. Intrauterine Devices (IUDs) [425,000]
5. Metal Screws, Pins, Plates, and Rods (Traumatic Fracture Repair) [453,000]
4. Artificial Knees [543,000]
3. Coronary Stents [560,000]
2. Ear Tubes (Tympanostomy Tubes) [715,000]
1. Artificial Eye Lenses (Pseudophakos/Intraocular Lens) [2,582,000]