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Motor control system for an automatic catheter inflation system

  • US 5,599,301 A
  • Filed: 11/22/1993
  • Issued: 02/04/1997
  • Est. Priority Date: 11/22/1993
  • Status: Expired due to Term
First Claim
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1. An automatic inflation device for a catheter system for use in a body lumen of a patient, comprising:

  • a catheter having a proximal end and a distal end, and an inflatable member near said distal end;

    an inflation lumen within said catheter for providing fluid communication between said proximal end and said inflatable member;

    a pump adapted to pressurize fluid in said inflation lumen and said inflatable member, said pump having an associated movement speed and movement directions;

    a pressure sensor adapted to measure fluid pressure in said inflatable member; and

    a controller adapted to be programmed with a selected rate of fluid pressure change, that receives the measured pressure sensed by the pressure sensor and determines the actual rate of pressure change therefrom, that compares the actual rate of pressure change to the programmed selected rate of change and determines the difference, and that controls the speed of the pump to decrease said difference, whereby said inflatable member is inflated by fluid pressurized at the selected rate of pressure change.

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