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External cardiac assistance

  • US 3,866,604 A
  • Filed: 09/28/1973
  • Issued: 02/18/1975
  • Est. Priority Date: 09/28/1973
  • Status: Expired due to Term
First Claim
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1. Apparatus for external cardiac assistance comprising:

  • means defining a plurality of non-distensible gas fillable bladders which are wrappable aobut a human limb and unwrappable therefrom, said means including within said bladders compression preventing means for preventing complete local compression of opposing walls thereof at any point therein while allowing lateral gas flow;

    means for selectively inflating and deflating said bladders by admission of gas and withdrawal of gas therefrom to selectively pressurize the cardiovascular system at the location in the limb wrapped by said bladders;

    means defining a common casing blanket for overlying a series of bladder wrappings along a limb and being similarly wrappable about said limb and unwrappable therefrom along with said bladders; and

    means for selectively hardening and softening the blanket casing comprising a filling of particulate material therein and means for drawing and releasing a vacuum therein to provide a substantially cylindrical reaction wall for the bladders and for softening the blanket casing to make it flexible for wrapping and unwrapping operations.

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