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Electrohydraulic ventricular assist device

  • US 5,569,156 A
  • Filed: 09/09/1994
  • Issued: 10/29/1996
  • Est. Priority Date: 09/10/1993
  • Status: Expired due to Fees
First Claim
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1. An electrohydralic ventricular assist device adapted for cannulation to the blood circulatory system comprising;

  • unified system means adapted to be implanted in a human thorax proximal to the human heart to replace or assist a ventricle including an internal electronic controller for generating an actuating signal, a blood pumping means with an inflow blood port and an outflow blood port for cannulation to the blood circulatory system, said pumping means displacing blood through said inflow and outflow ports in response to said actuating signal and said unified system being contained within a housing the back of which has a convex surface curvature compatible with the internal human sagittal and transverse chest wail curvatures, said housing containing a support for said internal electronic controller and containing said blood pumping means in a compact structure with said inflow and outflow ports oriented away from the front of said housing, and said structure with an overall size and geometry such that when the unified system is placed within the human thorax with the back of said housing surface adjacent the chest wall, said structure does not adversely compress adjacent organs, create dead space or limit chest closure;

    rechargeable internal battery means adapted for subcutaneous implantation producing an internal supply voltage for said unified system means;

    external power supply source means for providing a DC voltage;

    external electronic controller means for converting said DC voltage received from said external power supply source to an AC supply voltage and for generating a recharge signal for said internal battery;

    transcutaneous energy transformer (TET) means for transmitting said AC supply voltage and said recharge signal across the skin to said unified system;

    first coupling means for connecting said internal battery means to said unified system means;

    second coupling means for connecting said unified system means to said transcutaneous energy transformer means to receive said AC supply voltage and for establishing a communication channel between said external controller and said unified system.

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