System and method to simulate hemodynamics
AssigneeVictor KRSTEC
InventorsMichael Dancu, John Tarbell
Life of this patent
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Abstract
A system for hemodynamic simulation comprises a vessel having properties of a blood vessel, a reservoir containing a quantity of fluid, tubing connecting the vessel and reservoir, and at least one pump for circulating the fluid within the system. Fluid can be tissue culture medium or blood analog fluid, and the vessel may include mammalian cells attached to its inside. A drive system, comprising two reciprocating drive shafts that are coupled by a cam, enables the uncoupling of pulsatile flow and pulsatile pressure to provide independent control over wall shear stress and circumferential strain. The shaft drives two pumps that are 180 degrees out-of-phase and are connected upstream and downstream of the vessel, and effect this uncoupling.
Claims24
A system for producing biomechanical conditions, the system comprising:
- vessel through which a fluid may be urged;
- chamber in which the vessel is received;
- plurality of pumps configured to be in fluid communication with the fluid, one of the pumps for urging the fluid through the vessel;
- and
- drive system unit configured to control the pumps, wherein the drive system unit includes at least one of a cam mechanism;
- a multi-bar linkage mechanism;
- a solenoid;
- a stepper motor;
- an electric motor;
- a linear ball actuator;
- a belt-driven actuator;
- or a chain-driven actuator between two of the plurality of pumps.
A method for producing biomechanical conditions, the method comprising:
- providing a chamber through which fluid may be urged, wherein said chamber is configured to receive a vessel therein, wherein said chamber is operatively coupled to a pump;
- providing an upstream pump configured to be in fluid communication with the chamber, the upstream pump for urging the fluid through the chamber in a pushing manner;
- and
- providing a downstream pump configured to be in fluid communication with the chamber, the downstream pump for urging the fluid through the chamber in a pulling manner.
Dependencies are inferred from the claim text.