Negative pressure intestinal anastomosis protection devices
A device is disclosed that provides for the protection of intestinal anastomosis sites and other body sites from bodily fluids and contaminants. Additionally, the device provides the ability to create negative pressure at the site of the obstruction to ensure that contaminants flow from the visceral compartment into the inner lumen of the bowel. Further, the device provides the sectional forces through natural constrictions of the intestinal muscles through peristaltic action.
1. A medical device for placement in a hollow organ, comprising:
a member with a tubular shape having with a free flowing central lumen and an external surface, the member having at least two concentric wall layers with a free volume section enclosed between the layers;
means for collapsing the device radially mounted to the member; and, means for fluid communication from the external surface of the tubular device, through the free volume section between the wall layers of the device, and exiting into the central lumen of the device,
wherein the means for fluid communication is discontinuous in an unstressed condition and is directionally controlled in a stressed condition.
2. The medical device of claim 1 , wherein the device comprises two concentric tube layers mounted together to form a closed cavity there between.
3. The device of claim 1 , wherein the means for fluid communication comprises one-way valves contained in the member.
4. The device of claim 1 , wherein the means for collapsing the member comprises a helical spring concentrically mounted to the member.
5. A method of protecting a site in a hollow organ, comprising the step of:
inserting a protective device intraluminally into a lumen of a hollow organ at an anastomosis site, the device comprising:
a member with a tubular shape having with a free flowing central lumen and an external surface, the member having at least two concentric wall layers with a free volume section enclosed between the layers,
means for collapsing the device radially mounted to the member; and,
means for fluid communication from the external surface of the tubular device, through the free volume section between the wall layers of the device and exiting into the central lumen of the device,
wherein the means for fluid communication is discontinuous in an unstressed condition and is directionally controlled in a stressed condition.