Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive Measurement

A fully parameterized three-dimensional model with specific dimensions has been developed in ANSYS for an insulin injection pen used by diabetic persons. The insulin injection pen has a smart pen cap which hosts four electrodes used for the smart pen cap electrode capacitive measurement. The additio...

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Main Authors: Maria-Alexandra Paun, Alexandre Schnegg, Sylvain Joly, Jean-Baptiste Orhan, Albrecht Lepple-Wienhues, Catherine Dehollain
Format: Article
Language:English
Published: IEEE 2019-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/8805361/
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author Maria-Alexandra Paun
Alexandre Schnegg
Sylvain Joly
Jean-Baptiste Orhan
Albrecht Lepple-Wienhues
Catherine Dehollain
author_facet Maria-Alexandra Paun
Alexandre Schnegg
Sylvain Joly
Jean-Baptiste Orhan
Albrecht Lepple-Wienhues
Catherine Dehollain
author_sort Maria-Alexandra Paun
collection DOAJ
description A fully parameterized three-dimensional model with specific dimensions has been developed in ANSYS for an insulin injection pen used by diabetic persons. The insulin injection pen has a smart pen cap which hosts four electrodes used for the smart pen cap electrode capacitive measurement. The addition of the smart cap on top of the insulin injection pens is novel and essential for storing and transmitting injection dose and time data to help patients successfully manage their treatment. The simulations can be used to decide the number and exact shape of the electrodes, as well as to evaluate different misalignment and asymmetries of the electrode fabrication process or of the liquid misplacement. Using Maxwell 3D tool the electrode capacitance was numerically evaluated, which is necessary for sensing and ultimately for insulin dose precise detection. Experimental results have been provided using an AD7746 high-resolution sigma-delta capacitance-to-digital converter (CDC). Simulation and experimental results for the sense electrode capacitance, in the case of both smart pen cap and complete insulin injection pen + smart pen cap system, have been obtained, using two different configurations (1 vs 3 and 2 vs 2 respectively). Smart pen cap electrode capacitance variation for different insulin fill states has been numerically evaluated and the linear behavior of the injection has been proven.
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spelling doaj.art-91acd20ab75a4f0ea57c1f683e5a86bd2022-12-21T23:48:37ZengIEEEIEEE Access2169-35362019-01-01711742611743510.1109/ACCESS.2019.29362908805361Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive MeasurementMaria-Alexandra Paun0https://orcid.org/0000-0003-2088-7457Alexandre Schnegg1Sylvain Joly2Jean-Baptiste Orhan3Albrecht Lepple-Wienhues4Catherine Dehollain5RFIC Group, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandHaute Ecole Arc Ingénierie (HES-SO), La Chaux-de-Fonds, SwitzerlandValtronic Technologies SA, Les Charbonnières, SwitzerlandValtronic Technologies SA, Les Charbonnières, SwitzerlandValtronic Technologies SA, Les Charbonnières, SwitzerlandRFIC Group, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandA fully parameterized three-dimensional model with specific dimensions has been developed in ANSYS for an insulin injection pen used by diabetic persons. The insulin injection pen has a smart pen cap which hosts four electrodes used for the smart pen cap electrode capacitive measurement. The addition of the smart cap on top of the insulin injection pens is novel and essential for storing and transmitting injection dose and time data to help patients successfully manage their treatment. The simulations can be used to decide the number and exact shape of the electrodes, as well as to evaluate different misalignment and asymmetries of the electrode fabrication process or of the liquid misplacement. Using Maxwell 3D tool the electrode capacitance was numerically evaluated, which is necessary for sensing and ultimately for insulin dose precise detection. Experimental results have been provided using an AD7746 high-resolution sigma-delta capacitance-to-digital converter (CDC). Simulation and experimental results for the sense electrode capacitance, in the case of both smart pen cap and complete insulin injection pen + smart pen cap system, have been obtained, using two different configurations (1 vs 3 and 2 vs 2 respectively). Smart pen cap electrode capacitance variation for different insulin fill states has been numerically evaluated and the linear behavior of the injection has been proven.https://ieeexplore.ieee.org/document/8805361/Electrode capacitanceinsulin injection penMaxwell 3Dsmart pen capthree-dimensional model
spellingShingle Maria-Alexandra Paun
Alexandre Schnegg
Sylvain Joly
Jean-Baptiste Orhan
Albrecht Lepple-Wienhues
Catherine Dehollain
Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive Measurement
IEEE Access
Electrode capacitance
insulin injection pen
Maxwell 3D
smart pen cap
three-dimensional model
title Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive Measurement
title_full Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive Measurement
title_fullStr Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive Measurement
title_full_unstemmed Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive Measurement
title_short Three-Dimensional Model and Evaluation of an Insulin Injection Pen for Precise Dose Capacitive Measurement
title_sort three dimensional model and evaluation of an insulin injection pen for precise dose capacitive measurement
topic Electrode capacitance
insulin injection pen
Maxwell 3D
smart pen cap
three-dimensional model
url https://ieeexplore.ieee.org/document/8805361/
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