US Patent 11712509 Seal assembly for circular stapling instrument

A circular stapling instrument includes an adapter assembly having a tubular body, a shell assembly disposed on a distal portion of the tubular body, and a seal assembly supported on the tubular body. The seal assembly includes an inflatable member disposed proximal of the shell assembly, wherein the inflatable member includes a first diameter when in a deflated condition and a second diameter when in an inflated condition, the second diameter being larger than the first diameter.