Ureteral stent sleeve for early detection of hydronephrosis

Ureteral stent sleeve for early detection of hydronephrosis | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Ureteral stent sleeve for early detection of hydronephrosis Nabil Shalabi, Kyle Searles, Roman Herout, Khaled Almutairi, Ben Chew, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6832587/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 18 Mar, 2026 Read the published version in Microsystems & Nanoengineering → Version 1 posted You are reading this latest preprint version Abstract Hydronephrosis, a serious complication of ureteral stents, can lead to deterioration of renal function due to prolonged increased intrarenal pressure. Currently the only way to diagnose hydronephrosis is radiographic imaging and a continuous, non-invasive method is not available. This study introduces the ureteral stent sleeve, UroSleeve, a modular wireless pressure monitoring system that is designed to integrate seamlessly with standard ureteral stents without altering their existing designs or manufacturing processes. The UroSleeve incorporates a flexible printed-circuit-board-based spiral antenna and a surface-micromachined capacitive pressure sensor, forming an inductor-capacitor tank circuit capable of wireless telemetry through near-field inductive coupling. The device was evaluated in an ex vivo porcine kidney model whose internal pressure was externally controlled to mimic a hydronephrosis condition, and kidney pressure changes were successfully monitored by detecting shifts in the resonant frequency of the device. Key results demonstrated a high sensitivity with -5.3 ± 0.74 kHz/mmHg with a baseline resonant frequency of 15.234 MHz at 8.5 mmHg. The frequency response showed a strong correlation with kidney pressure, and the device maintained consistent performance in a relevant biological environment. The results indicate that UroSleeve offers a practical and versatile solution for wireless intrarenal pressure monitoring amendable for clinical translation. Physical sciences/Engineering/Electrical and electronic engineering Physical sciences/Nanoscience and technology/Nanoscale devices/Sensors Full Text Additional Declarations There is no conflict of interest All ex vivo tissue harvests were conducted in accordance with legal, public health, and ethical standards, with approval from the Animal Care Committee at the University of British Columbia Cite Share Download PDF Status: Published Journal Publication published 18 Mar, 2026 Read the published version in Microsystems & Nanoengineering → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6832587","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":478610503,"identity":"10e4e3ab-91da-4558-921f-1886b6db3fdf","order_by":0,"name":"Nabil 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