Automatic infiltration detection system and method
First Claim
Patent Images
1. An infusion system for infusing a flowable material into a patient comprising:
- an infusion device for delivering the flowable material, said infusion device including means for delivering the flowable material in a normal delivery pattern and for delivering a test pulse of the flowable material with the test pulse being different from the normal delivery pattern and with the test pulse providing an increased flow rate of flowable material;
conduit means for conducting the flowable material from the infusion device to the patient, said test pulse creating a pressure wave response in the conduit means; and
means responsive to the pressure wave response in the conduit means for detecting if the flowable material is being improperly supplied by the conduit means to the patient.
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Abstract
An infusion system for infusing a flowable material into a patient comprising an infusion device for delivering the flowable material in both a normal delivery pattern and a test pulse and a conduit for conducting the flowable material from the infusion device to the patient. The test pulse creates a pressure wave response in the conduit. The pressure wave response is monitored and used to detect if the infiltration has occurred.
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Citations
21 Claims
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1. An infusion system for infusing a flowable material into a patient comprising:
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an infusion device for delivering the flowable material, said infusion device including means for delivering the flowable material in a normal delivery pattern and for delivering a test pulse of the flowable material with the test pulse being different from the normal delivery pattern and with the test pulse providing an increased flow rate of flowable material; conduit means for conducting the flowable material from the infusion device to the patient, said test pulse creating a pressure wave response in the conduit means; and means responsive to the pressure wave response in the conduit means for detecting if the flowable material is being improperly supplied by the conduit means to the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus for use with an infusion device which infuses flowable material at any of a plurality of selected infusion rates through conduits means to a patient with the delivery of the flowable material from the infusion device including a pulse which provides a pressure wave response in the conduit means whose characteristics change depending upon whether or not the conduit means is properly supplying the flowable material to the patient, said apparatus comprising:
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a pressure transducer for providing a pressure signal which is related to at least a portion of the pressure wave response; means responsive to the same characteristic of the pressure wave response as represented by the pressure signal at all of said infusion rates for detecting if the flowable material is being properly supplied to the patient by the conduit means; and means responsive to the detecting means for providing remedial action if the flowable material is not being properly supplied to the patient. - View Dependent Claims (14)
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15. A method for determining if a flowable material is being properly supplied to a patient by an infusion system, said method comprising:
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delivering the flowable material through conduit means to a patient'"'"'s vascular system in a normal delivery pattern and in a test pulse, with the test pulse being different from the normal delivery pattern and with the test pulse creating a pressure wave response in the conduit means; and monitoring at least a portion of the pressure wave response to detect if the flowable material is being improperly supplied by the conduit means to the patient. - View Dependent Claims (16, 17, 18, 19)
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20. A method for detecting infiltration wherein an infusion device infuses the flowable material at any of a plurality of selected infusion rates through a conduit means to a patient'"'"'s vascular system with the delivery of the flowable material from the infusion device including a pulse which provides a pressure wave response in the conduit means whose characteristics change depending upon whether or not infiltration has occurred, said method comprising:
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monitoring the same characteristic of the pressure wave response regardless of the infusion rates to detect if infiltration has occurred; and providing remedial action if infiltration is detected. - View Dependent Claims (21)
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Specification