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US 7,749,152 B2Granted
Impedance pump used in bypass grafts
AssigneeCalifornia Institute of Technology
InventorsMorteza Gharib, Derek Rinderknecht, Idit Avrahami, Brad Sharp
Life of this patent
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Abstract
A pump installed inside a graft in a body such as the human body to force fluid such as blood through that graft. The pump can be one which operates totally from the outside of the graft, forcing fluid through the graft without extending inside the graft. The pump can be an impedance pump, that operates based on the fluidic mismatches between the graft, and other fluid carrying vessels within the human body.
Claims7
A device comprising:
- a pump, located to pump fluid within an artificial graft which bypasses a blood carrying vessel inside a human body to enhance flow rate within the blood carrying vessel, said artificial graft connected to other blood carrying vessels inside the human body,
- said pump of a type which does not have any parts that extend within said artificial graft,
- said pump of a type that has no valves therein, and which pumps based on mismatches in fluidic impedance between said artificial graft on which the pump is attached, and said other blood carrying vessels;
- a power supply for said pump, which causes actuation of the pump to cause pumping, and
- a controller for the pump, which controls the pump to operate at a specified rate which causes a specified degree of pumping in said artificial graft.
2 more elements
Dependencies are inferred from the claim text.