Patent ID: 8636810

Claim:
A medical device for protecting anastomosis sites, comprising: an inner tubular member having an inner lumen, a diameter, an outer surface, an inner surface, opposed ends, and a sidewall, wherein the diameter of the tubular member varies at least partly along the length of the tubular member; an outer tubular member having an inner lumen, a length, opposed ends, an outer surface, an inner surface, and a sidewall; an outer compressive member having an inner lumen; valves contained in the side wall of the inner tubular member; valves contained in the side wall of the outer tubular member, wherein the inner tubular member is concentrically mounted in the lumen of the outer tubular member forming a fluid-tight cavity between the inner surface of the outer member and the outer surface of the inner member; wherein the outer compressive member is concentrically mounted about the outer tubular member; wherein the inner tubular member and the outer tubular member each have a radial strength, and the radial strength of the inner tubular member is greater than the radial strength of the outer tubular member; and wherein a fluid pathway is formed from an exterior surface of the outer tubular member and extending through the valves in the outer tubular member wall, into the cavity, out of the cavity through the valves in the inner tubular member wall and into the inner lumen of the inner tubular member.