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Asynchronous cycling of mechanical ventilators

  • US 5,359,999 A
  • Filed: 02/24/1993
  • Issued: 11/01/1994
  • Est. Priority Date: 06/20/1991
  • Status: Expired due to Fees
First Claim
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1. A ventilator system comprising:

  • an inflatable bladder worn by a subject;

    a first ventilator connected to said inflatable bladder, said first ventilator having an input signal receiver;

    an endotracheal tube inserted into said subject;

    a second ventilator having an input signal receiver and being connected to said endotracheal tube;

    means for generating signals representative of the start of each of patient inspiration and expiration;

    means for transmitting said signal representative of patient expiration start time from said first ventilator to said input signal receiver of said second ventilator;

    means for starting patient expiration on said first ventilator; and

    means for starting patient inspiration on said second ventilator responsive to the receipt of said signal representative of said expiration start time and following patient expiration, said first and second ventilators thereby operating asynchronously.

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