{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,28]],"date-time":"2026-01-28T05:36:29Z","timestamp":1769578589322,"version":"3.49.0"},"reference-count":40,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T00:00:00Z","timestamp":1769472000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003710","name":"Korea Health Industry Development Institute","doi-asserted-by":"publisher","award":["RS-2024-00405083"],"award-info":[{"award-number":["RS-2024-00405083"]}],"id":[{"id":"10.13039\/501100003710","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biosensors"],"abstract":"<jats:p>Foreign matter accumulating on catheters during ascites paracentesis in cancer patients can interfere with the procedure. The paracentesis site must be visually inspected by patients or medical staff. We propose a monitoring method using sensors, as they enable real-time, automatic status detection. The proposed design integrates a sensor into the drainage tube to detect liquid flow using the Lorentz force. The sensor consists of a permanent magnet, a yoke, and a signal processing circuit. Mu-metal shields the magnet to prevent interference with surrounding circuits. Physiological saline solution is used as a substitute for bodily fluids. Sensor performance was evaluated via finite element analysis. The Lorentz force generated an average voltage of 11.07 \u03bcV when liquid was present, enabling detection of the flow status. The proposed sensor is non-invasive and features a clip design, allowing attachment and detachment from the drainage tube for reuse. Non-invasiveness ensures safety from infection, and reusability can reduce medical costs. This study proposes a sensor for monitoring peritoneal puncture status. By detecting liquid flow using the Lorentz force, the system enables real-time monitoring during the procedure.<\/jats:p>","DOI":"10.3390\/bios16020078","type":"journal-article","created":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T17:07:38Z","timestamp":1769533658000},"page":"78","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Development of a Non-Contact Flow Sensor Based on a Permanent Magnet Metal Clip for Monitoring Circulation Status"],"prefix":"10.3390","volume":"16","author":[{"given":"Kicheol","family":"Yoon","sequence":"first","affiliation":[{"name":"Gachon Biomedical Convergence Institute, Gachon University Gil Medical Center, Incheon 21565, Republic of Korea"},{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Republic of Korea"},{"name":"Department of Electronic Engineering, Gyeonggi University of Science and Technology, 269 Gyeonggigwagi-dearo, Siheung City 15073, Gyeonggi-do, Republic of Korea"},{"name":"Division of Medical Oncology, Department of Internal Medicine, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seung Hee","family":"Choi","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Gyeonggi University of Science and Technology, 269 Gyeonggigwagi-dearo, Siheung City 15073, Gyeonggi-do, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tae-Hyeon","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Electronic Engineering, Gyeonggi University of Science and Technology, 269 Gyeonggigwagi-dearo, Siheung City 15073, Gyeonggi-do, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sangyun","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Radiological Science, Dongnam Health University, 50 Cheoncheon-ro 74 gil, Jangan-gu, Suwon 16328, Gyeonggi-do, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sunghoon","family":"Kang","sequence":"additional","affiliation":[{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1340-6291","authenticated-orcid":false,"given":"Sun Jin","family":"Sym","sequence":"additional","affiliation":[{"name":"Division of Medical Oncology, Department of Internal Medicine, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9714-6038","authenticated-orcid":false,"given":"Kwang Gi","family":"Kim","sequence":"additional","affiliation":[{"name":"Medical Devices R&D Center, Gachon University Gil Medical Center, 21, 774 beon-gil, Namdong-daero, Namdong-gu, Incheon 21565, Republic of Korea"},{"name":"Department of Biomedical Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea"},{"name":"Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology (GAIHST), Gachon University, 38-13, 3 Dokjom-ro, Namdong-gu, Incheon 21565, Republic of Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Chen, H., Ishihara, M., Horita, N., Tanzawa, S., Kazahari, H., Ochiai, R., Sakamoto, T., Honda, T., Ichikawa, Y., and Watanabe, K. 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