×

Sampling method in infusion pump apparatus

  • US 5,343,734 A
  • Filed: 09/03/1992
  • Issued: 09/06/1994
  • Est. Priority Date: 09/04/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A sampling method for sampling an output emerging from a bubble detector used in an infusion device of a type comprising an resilient infusion tubing communicated at an upstream end thereof with a source of medical solution and at a downstream end thereof with a destination, a peristaltic means including a plurality of juxtaposed finger members adapted to be sequentially driven to operatively engage a portion of the infusion tubing to sequentially squeeze said portion of the infusion tubing while producing at least one moving zone of occlusion along said infusion tubing for infusing a medical solution from the source of the medical solution towards the destination, a drive means for driving the peristaltic means to sequentially drive the finger members, said sampling of the output from the bubble detector being carried out only during a first period from the timing at which one of the finger members closer to the source of the medical solution squeezes that portion of the infusion tubing to the timing at which one of the finger members closer to the destination squeezes that portion of the infusion tubing, but not during a second period from the timing at which one of the finger members closer to the destination squeezes that portion of the infusion tubing to the timing at which one of the finger members closer to the source squeezes that portion of the infusion tubing.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×