Academic Journal
Handheld motorized injection system with fiber-optic distance sensors and adaptive time-delay controller
| Title: | Handheld motorized injection system with fiber-optic distance sensors and adaptive time-delay controller |
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| Authors: | Jintaek Im, Sukho Park, Cheol Song |
| Source: | International Journal of Optomechatronics, Vol 18, Iss 1 (2024) |
| Publisher Information: | Taylor & Francis Group, 2024. |
| Publication Year: | 2024 |
| Collection: | LCC:Materials of engineering and construction. Mechanics of materials LCC:Applied optics. Photonics |
| Subject Terms: | Fiber-optic interferometric sensor, needle-integrated distance sensor, handheld microinjector, time-delay control (TDC), Materials of engineering and construction. Mechanics of materials, TA401-492, Applied optics. Photonics, TA1501-1820 |
| More Details: | During the last decade, many ophthalmic therapeutic drugs have been clinically approved, and intraocular injection has been a common surgical intervention. Injecting drugs directly into the subretinal space is crucial to treat retinal complications effectively. Here, we report a handheld microinjector with two fiber-optic distance sensors and time-delay control (TDC) to mitigate nonlinear disturbances during the injection task. The conventional method exhibited a cosine error of approximately 77 μm at an angle of 45°, whereas our proposed needle reduced measurement errors to ∼6 μm. Also, TDC-based position regulation is designed to adaptively apply motor inputs by estimating disturbances during the handheld task and achieving fast system responses with minor control errors. Phantom studies show a maximum reduction of 26.5% in root-mean-square error (RMSE) compared to the existing approach. Moreover, ex-vivo experiments demonstrated superior and robust injection performance, resulting in an injection RMSE of 10.3 μm. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 15599612 1559-9620 1559-9612 |
| Relation: | https://doaj.org/toc/1559-9612; https://doaj.org/toc/1559-9620 |
| DOI: | 10.1080/15599612.2023.2299023 |
| Access URL: | https://doaj.org/article/de3ec59117b54fc184973b5f3d3dac20 |
| Accession Number: | edsdoj.3ec59117b54fc184973b5f3d3dac20 |
| Database: | Directory of Open Access Journals |
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| ISSN: | 15599612 15599620 |
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| DOI: | 10.1080/15599612.2023.2299023 |
| Published in: | International Journal of Optomechatronics |
| Language: | English |