Arterial-venous switching
First Claim
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1. A method for switching blood flow in a body part, comprising:
- coupling a flow control system to the body part, the flow control system configured to provide a plurality of flow paths;
delivering, with the flow control system configured to provide a first flow path, oxygenated blood flowing to a body part through a blood outflow vessel of the body part and providing oxygenated blood flowing out of the body part through a blood inflow vessel of the body part such that oxygenated blood enters the body part through the blood outflow vessel and oxygenated blood exits the body part through the blood inflow vessel; and
delivering, with the flow control system configured to provide a second flow path, oxygenated blood flowing to a body part through a blood inflow vessel of the body part and providing oxygenated blood flowing out of the body part through a blood outflow vessel of the body part such that oxygenated blood enters the body part through the blood inflow vessel and oxygenated blood exits the body part through the blood outflow vessel.
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Abstract
Methods and devices are provided for switching fluid flow through a body part, such as all or portions of an organ or extremity. In general, fluid inflow and fluid outflow vessels to at least a portion of a body part can be switched such that all fluid in at least a portion of the inflow and outflow vessels flows in an opposite direction. In other words, the fluid inflow vessel (or at least a portion thereof) becomes the fluid outflow vessel that receives fluid from a body part, and the fluid outflow vessel (or at least a portion thereof) becomes the fluid inflow vessel that delivers fluid to a body part.
12 Citations
30 Claims
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1. A method for switching blood flow in a body part, comprising:
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coupling a flow control system to the body part, the flow control system configured to provide a plurality of flow paths; delivering, with the flow control system configured to provide a first flow path, oxygenated blood flowing to a body part through a blood outflow vessel of the body part and providing oxygenated blood flowing out of the body part through a blood inflow vessel of the body part such that oxygenated blood enters the body part through the blood outflow vessel and oxygenated blood exits the body part through the blood inflow vessel; and delivering, with the flow control system configured to provide a second flow path, oxygenated blood flowing to a body part through a blood inflow vessel of the body part and providing oxygenated blood flowing out of the body part through a blood outflow vessel of the body part such that oxygenated blood enters the body part through the blood inflow vessel and oxygenated blood exits the body part through the blood outflow vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for switching blood flow in an arterial-venous system, comprising:
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forming a first blockage in a blood inflow vessel that delivers blood to a body part to prevent blood flow between a distal side of the first blockage in fluid communication with the body part and a proximal side of the first blockage blocked from communication with the body part; forming a second blockage in a blood outflow vessel that drains blood from the body part to prevent blood flow between a distal side of the second blockage in fluid communication with the body part and a proximal side of the second blockage blocked from communication with the body part; and redirecting blood from the proximal side of the first blockage to the distal side of the second blockage, and from the distal side of the first blockage into the proximal side of the second blockage such that oxygenated blood is provided to a body part through a blood outflow vessel of the body part and oxygenated blood flows out of the body part through a blood inflow vessel of the body part. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for switching blood flow, comprising:
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forming a blockage in an artery, wherein blood normally flows toward the blockage on a first side of the blockage and blood normally flows away from the blockage on a second side of the blockage; forming a blockage in a vein, wherein blood flows toward the blockage on a first side of the blockage and blood flows away from the blockage on a second side of the blockage; delivering blood from the first side of the blockage in the artery to the first side of the blockage in the vein and delivering blood from the second side of the blockage in the artery to the second side of the blockage in the vein such that blood flow on the second side of the blockage in the artery and the first side of the blockage in the vein is switched to flow toward the blockage on the second side of the blockage in the artery and to flow away from the first side of the blockage in the vein. - View Dependent Claims (30)
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Specification