Evaluation of the Accuracy of Current Tubeless Pumps for Continuous Subcutaneous Insulin Infusion.

Diabetes Technology & Therapeutics
Ralph ZieglerGuido Freckmann

Abstract

Background: Recently two new tubeless pumps for insulin therapy were introduced. They were tested for accuracy and occlusion detection and compared with the established patch pump Omnipod® (OP). Methods: Using a modified setup for tubeless pumps based on IEC 60601-2-24, the basal rate and bolus delivery of the Accu-Chek® Solo micropump system (ACS) and the A6 TouchCare® System (A6) were measured with a microgravimetric method. Bolus sizes of 0.2, 1, and 10 U, and basal rates of 0.1 and 1 U/h were evaluated in nine repetitions. For each parameter, mean deviation and number of individual boluses or 1-h basal rate windows within ±15% from target were calculated. In addition, occlusion detection time at basal rates of 0.1 and 1 U/h was determined. Results: Mean deviation of boluses of different volumes in the pumps ranged from -3.3% to +4.0% and 40%-100% of individual boluses were within ±15% of the target. During basal rate delivery, 48% to 98% of 1-h windows were within ±15% of the target with a mean deviation between -5.3% and +6.5%. In general, considerable differences between pump models were observed and deviations decreased with increasing doses. In most parameters, ACS was more accurate, and A6 less accurate, than OP. Mean ...Continue Reading

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Jul 14, 2018·Journal of Diabetes Science and Technology·Ulrike KameckeGuido Freckmann
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Aug 23, 2018·Journal of Diabetes Science and Technology·Lutz HeinemannGuido Freckmann
Mar 23, 2019·Diabetes Technology & Therapeutics·Guido FreckmannRalph Ziegler
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Feb 19, 2020·Diabetes Technology & Therapeutics·Sylvain GirardotJean-Pierre Riveline

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Citations

Mar 12, 2021·Journal of Diabetes Science and Technology·Jennifer Y ZhangDavid C Klonoff

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