Occlusion detection system and method
First Claim
Patent Images
1. A method for an infusion pump assembly, the method comprising:
- monitoring a displacement of one or more displaceable mechanical components included within the infusion pump assembly;
determining if the one or more displaceable mechanical components were displaced an expected displacement in response to delivery of one or more of a first dose of an infusible fluid and a second dose of the infusible fluid by comparing the monitored displacement to the expected displacement;
determining an initial force reading from a force sensor prior to dispensing the one or more of the first dose and the second dose of the infusible fluid;
determining a final force reading from the force sensor after dispensing the one or more of the first dose and the second dose of the infusible fluid;
comparing, to a threshold, one or more of the initial force reading or the final force reading to determine if one or more of the initial force reading or the final force reading exceeds the threshold; and
if the one or more displaceable mechanical components were not displaced the expected displacement in response to delivery of one or more of the first dose of the infusible fluid and the second dose of the infusible fluid or if one or more of the initial force reading or final force reading exceeds the threshold, initiating an alarm sequence on the infusion pump assembly.
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Abstract
A method, computer program product, and infusion pump assembly for determining a first rate-of-change force reading that corresponds to the delivery of a first dose of an infusible fluid via an infusion pump assembly. At least a second rate-of-change force reading is determined that corresponds to the delivery of at least a second dose of the infusible fluid via the infusion pump assembly. An average rate-of-change force reading is determined based, at least in part upon the first rate-of-change force reading and the at least a second rate-of-change force reading.
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Citations
12 Claims
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1. A method for an infusion pump assembly, the method comprising:
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monitoring a displacement of one or more displaceable mechanical components included within the infusion pump assembly; determining if the one or more displaceable mechanical components were displaced an expected displacement in response to delivery of one or more of a first dose of an infusible fluid and a second dose of the infusible fluid by comparing the monitored displacement to the expected displacement; determining an initial force reading from a force sensor prior to dispensing the one or more of the first dose and the second dose of the infusible fluid; determining a final force reading from the force sensor after dispensing the one or more of the first dose and the second dose of the infusible fluid; comparing, to a threshold, one or more of the initial force reading or the final force reading to determine if one or more of the initial force reading or the final force reading exceeds the threshold; and if the one or more displaceable mechanical components were not displaced the expected displacement in response to delivery of one or more of the first dose of the infusible fluid and the second dose of the infusible fluid or if one or more of the initial force reading or final force reading exceeds the threshold, initiating an alarm sequence on the infusion pump assembly. - View Dependent Claims (2, 3, 4)
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5. A computer program product residing on a non-transitory computer readable medium in an infusion pump assembly having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations comprising:
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monitoring a displacement of one or more displaceable mechanical components included within the infusion pump assembly; determining if the one or more displaceable mechanical components were displaced an expected displacement in response to delivery of one or more of a first dose of an infusible fluid and a second dose of the infusible fluid by comparing the monitored displacement to the expected displacement; determining an initial force reading from a force sensor prior to dispensing the one or more of the first dose and the second dose of the infusible fluid; determining a final force reading from the force sensor after dispensing the one or more of the first dose and the second dose of the infusible fluid; comparing, to a threshold, one or more of the initial force reading or the final force reading to determine if one or more of the initial force reading or the final force reading exceeds the threshold; and if the one or more displaceable mechanical components were not displaced the expected displacement in response to delivery of one or more of the first dose of the infusible fluid and the second dose of the infusible fluid or if one or more of the initial force reading or final force reading exceeds the threshold, initiating an alarm sequence on the infusion pump assembly. - View Dependent Claims (6, 7, 8)
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9. An infusion pump assembly configured to perform operations comprising:
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monitoring a displacement of one or more displaceable mechanical components included within the infusion pump assembly; determining if the one or more displaceable mechanical components were displaced an expected displacement in response to delivery of one or more of a first dose of an infusible fluid and a second dose of the infusible fluid by comparing the monitored displacement to the expected displacement; comparing, to a threshold, one or more of an initial force reading from a force sensor prior to delivery of the one or more of the first dose and the second dose of the infusible fluid or a final force reading from the force sensor after delivery of the one or more of the first dose and the second dose of the infusible fluid; and if the one or more displaceable mechanical components were not displaced the expected displacement in response to delivery of one or more of the first dose of the infusible fluid and the second dose of the infusible fluid or if one or more of the initial force reading or final force reading exceeds the threshold, initiating an alarm sequence on the infusion pump assembly. - View Dependent Claims (10, 11, 12)
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Specification