. . . "In another embodiment, tool 20 and/or 22 may be one or more of a tool for excising natural tissue, a tool for excising a natural valve, an arthrectomy device, a prosthetic valve delivery system, a balloon catheter, a stent delivery catheter, a knife, a stapler, a screwdriver, a suturing system with sutures, or combinations thereof, for example, including a prosthetic valve and a device to place th" . . . . .