Shape Memory Tube Plug for Fine-control of Intraocular Pressure by Glaucoma Devices

Won Taek Oh, Jung Bok Lee, Wungrak Choi, Hyoung Won Bae, Chang Soo Kim, Chan Yun Kim, Hak Joon Sung

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


As a standard approach to treating glaucoma, a silicone tube device is inserted into the eye to drain water and thereby lower the intraocular pressure (IOP). However, the fixed diameter of the tube often results in too much initial water drain. Suture-sheaving of the outer tube wall also leads to random IOP drops over time. In this study, self-expansion of the inner tube diameter was achieved by inserting a shape memory tube into the silicone tube. The difference in controlling small to large IOP drops before and after tube diameter expansion was demonstrated via computational modeling, a flow pumping system, and rabbit experiments.

Original languageEnglish
Pages (from-to)3784-3790
Number of pages7
JournalACS Biomaterials Science and Engineering
Issue number7
Publication statusPublished - 2020 Jul 13

Bibliographical note

Funding Information:
This study was financially supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (NRF-2016M3A9E9941743-HJS and NRF-2017 R1A2B4012212-CYK).

Publisher Copyright:
Copyright © 2020 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Biomedical Engineering


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