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A drug delivery device concept using a miniature tubular linear electromagnetic actuator: design, modeling and experimental validation

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Abstract

Purpose

In this paper, we present a concept of an implantable drug delivery device able to deliver drugs in the duodenum for a long period of time (e.g. one month). This device will help to overcome therapeutic non-adherence which is the main reason why many patients do not obtain all the benefits they could expect from their medicines.

Methods

The presented device is based on a miniature tubular linear actuator capable to move at discrete positions inside a tube. Its small size and ability to realize small strokes makes it suitable for this type of biomedical application. Our research work mainly focuses on the actuator design. First, we present the electromagnetic modeling of the actuator followed by its experimental validation.

Results

Results show that the presented actuator can reach discrete positions inside the tube with an average displacement stroke value of 3.5 mm with a standard deviation of 0.1 mm for a 0.5 A supplied current. Finally, we validate the actuator as part of the complete drug delivery device where balls with a diameter of 3 mm, mimicking drug doses, were released from the tube one by one.

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Acknowledgements

This work is supported by The Initiative Maîtrise des Systèmes Technologiques sûrs et Durables (MSTD) Alliance Sorbonne Université.

Funding

This work is supported by The Initiative Maîtrise des Systèmes Technologiques sûrs et Durables (MSTD) Alliance Sorbonne Université.

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Authors and Affiliations

Authors

Contributions

The authors contributed equally to this work. M.B.S. contributed to the development, prototyping, modeling and experimental validation of the mentioned actuator and drug delivery device. She also wrote the main manuscript text. L.P. also contributed to the development and the modeling of the actuator and the experimental validation of the drug delivery device. He also participated in the review process. M.-u.K. was involved in the design process and the review of this article. J.T., C.P. and T.C. contributed to the design process of the drug delivery device and the review process of this article. F.L. and C.E. contributed to the design process and the discussion for the future advancement of this project. All authors have read and agreed to the published version of the manuscript.

Corresponding author

Correspondence to Mouna Ben Salem.

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The authors have no competing interests, or other interests that might be perceived to influence the results and/or discussion reported in this paper.

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Ben Salem, M., Petit, L., Ullah Khan, M. et al. A drug delivery device concept using a miniature tubular linear electromagnetic actuator: design, modeling and experimental validation. J Micro-Bio Robot 18, 25–36 (2022). https://doi.org/10.1007/s12213-023-00153-w

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