Mechatronic Intraurethral Sphincter: A Novel Assembly-Focused Closure Mechanism Based on Elastomer Compression

Preis A, Sailer J, Benke E, Reitelshöfer S, Rieker R, Ebert T, Walter J, Franke J (2026)

Publication Type: Conference contribution

Publication year: 2026

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 3rd International Conference on Integrated Systems in Medical Technologies, ISMT 2025 - Conference Proceedings

Event location: Erlangen DE

ISBN: 9798331557157

DOI: 10.1109/ISMT68188.2025.11488080

Abstract

The treatment of stress urinary incontinence (SUI) is a socioeconomic and medical as well as technological challenge. Current artificial urinary sphincters (AUS) require invasive surgery, have high complication rates, are not sex independent, or are technically immature. This publication presents an improved version of a minimally invasive, mechatronic intraurethral sphincter prosthesis. It uses a new actuator design based on elastomer compression, a new assembly process, and silicone overmolding to improve functionality, reliability, biocompatibility, and manufacturability. The new design increases the flow channel area by more than 175%, reduces the required actuation stroke by 33%, and achieves easier assembly and complete hermetic sealing of the components. The new design lays the foundation for further research, not only for intraurethral sphincter prostheses, but also for pinch valves in general, which have a large ratio of flow area to build volume and low energy consumption.

Authors with CRIS profile

Alexander Preis Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS) Elisabeth Benke Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS) Sebastian Reitelshöfer Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS) Ralf Rieker Institute of Pathology Thomas Ebert Medizinische Fakultät Jonas Walter Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS) Jörg Franke Lehrstuhl für Fertigungsautomatisierung und Produktionssystematik (FAPS)

How to cite

APA:

Preis, A., Sailer, J., Benke, E., Reitelshöfer, S., Rieker, R., Ebert, T.,... Franke, J. (2026). Mechatronic Intraurethral Sphincter: A Novel Assembly-Focused Closure Mechanism Based on Elastomer Compression. In 3rd International Conference on Integrated Systems in Medical Technologies, ISMT 2025 - Conference Proceedings. Erlangen, DE: Institute of Electrical and Electronics Engineers Inc..

MLA:

Preis, Alexander, et al. "Mechatronic Intraurethral Sphincter: A Novel Assembly-Focused Closure Mechanism Based on Elastomer Compression." Proceedings of the 3rd International Conference on Integrated Systems in Medical Technologies, ISMT 2025, Erlangen Institute of Electrical and Electronics Engineers Inc., 2026.

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