{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T23:03:46Z","timestamp":1772838226198,"version":"3.50.1"},"reference-count":0,"publisher":"AccScience Publishing","issue":"2","license":[{"start":{"date-parts":[[2022,2,7]],"date-time":"2022-02-07T00:00:00Z","timestamp":1644192000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJB"],"abstract":"<jats:p>This paper presents novel umbrella-shaped flexible devices to prevent vesicoureteral reflux along double-J stents, which is a backward flow of urine from the bladder to the kidney and is a critical issue in patients with urinary stones. The anti-reflux devices were designed to mechanically attach to the stent and were manufactured using three-dimensional (3D) printing and polymer casting methods. Based on the umbrella shapes, four different devices were manufactured, and the antireflux efficiency was demonstrated through in vitro experiments using a urination model. Consequently, penta-shaped devices exhibited the best anti-reflux performance (44% decrease in reflux compared to the stent without the device), and maximum efficiency occurred when the device was attached near the bladder-ureter junction. In addition, a disadvantage of 3D printing (i.e., unwanted rough surface) helped the device strongly adhere to the surface of the stent during the insertion operation. Finally, long-term soaking experiments revealed that the fabricated devices were mechanically robust and chemically stable (safe) even being soaked in urine for 4 weeks. The findings of this study support the use of additive manufacturing to make various flexible and biocompatible urological devices to mitigate critical issues in patients with urinary stones.<\/jats:p>","DOI":"10.18063\/ijb.v8i2.549","type":"journal-article","created":{"date-parts":[[2022,5,27]],"date-time":"2022-05-27T07:45:09Z","timestamp":1653637509000},"page":"549","source":"Crossref","is-referenced-by-count":10,"title":["3D-Printing-Assisted Extraluminal Anti-Reflux Diodes for Preventing Vesicoureteral Reflux through Double-J Stents"],"prefix":"10.36922","volume":"8","author":[{"given":"Jihun","family":"Lee","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jaebum","family":"Sung","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jung Ki","family":"Jo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hongyun","family":"So","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"22835","published-online":{"date-parts":[[2022,2,7]]},"container-title":["International Journal of Bioprinting"],"original-title":[],"link":[{"URL":"https:\/\/api-journal.accscience.com\/uploads\/file\/asp\/202304181713505f2879807.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api-journal.accscience.com\/uploads\/file\/asp\/202304181713505f2879807.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,8,2]],"date-time":"2024-08-02T06:07:20Z","timestamp":1722578840000},"score":1,"resource":{"primary":{"URL":"https:\/\/accscience.com\/journal\/IJB\/8\/2\/10.18063\/ijb.v8i2.549"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,2,7]]},"references-count":0,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2022,4,30]]}},"URL":"https:\/\/doi.org\/10.18063\/ijb.v8i2.549","relation":{},"ISSN":["2424-7723","2424-8002"],"issn-type":[{"value":"2424-7723","type":"print"},{"value":"2424-8002","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,2,7]]}}}