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Deng K, Tang Y, Xiao Y, Zhong D, Zhang H, Fang W, Shen L, Wang Z, Pan J, Lu Y, Chen C, Gao Y, Jin Q, Zhuang L, Wan H, Zhuang L, Wang P, Zhai J, Ren T, Hu Q, Lang M, Zhang Y, Wang H, Zhou M, Gao C, Zhang L, Zhu Y. A biodegradable, flexible photonic patch for in vivo phototherapy. Nat Commun 2023; 14:3069. [PMID: 37244895 DOI: 10.1038/s41467-023-38554-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 05/08/2023] [Indexed: 05/29/2023] Open
Abstract
Diagnostic and therapeutic illumination on internal organs and tissues with high controllability and adaptability in terms of spectrum, area, depth, and intensity remains a major challenge. Here, we present a flexible, biodegradable photonic device called iCarP with a micrometer scale air gap between a refractive polyester patch and the embedded removable tapered optical fiber. ICarP combines the advantages of light diffraction by the tapered optical fiber, dual refractions in the air gap, and reflection inside the patch to obtain a bulb-like illumination, guiding light towards target tissue. We show that iCarP achieves large area, high intensity, wide spectrum, continuous or pulsatile, deeply penetrating illumination without puncturing the target tissues and demonstrate that it supports phototherapies with different photosensitizers. We find that the photonic device is compatible with thoracoscopy-based minimally invasive implantation onto beating hearts. These initial results show that iCarP could be a safe, precise and widely applicable device suitable for internal organs and tissue illumination and associated diagnosis and therapy.
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Affiliation(s)
- Kaicheng Deng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yao Tang
- Research Center for Humanoid Sensing, Zhejiang Lab, Hangzhou, 311100, China
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yan Xiao
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Danni Zhong
- Zhejiang University-University of Edinburgh Institute (ZJU-UoE Institute), School of Medicine, Zhejiang University, Haining, 314400, China
| | - Hua Zhang
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wen Fang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liyin Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhaochuang Wang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Jiazhen Pan
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yuwen Lu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Changming Chen
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yun Gao
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Qiao Jin
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lenan Zhuang
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Hao Wan
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liujing Zhuang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Ping Wang
- Biosensor National Special Laboratory, Key Laboratory for Biomedical Engineering of Education Ministry, Department of Biomedical Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Junfeng Zhai
- Institute of Plant Quarantine, Chinese Academy of Inspection and Quarantine, Beijing, 100176, China
| | - Tanchen Ren
- Department of Cardiology, Cardiovascular Key Laboratory of Zhejiang Province, Second Affiliated Hospital, Zhejiang University, Hangzhou, 310009, China
| | - Qiaoling Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Meidong Lang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Yue Zhang
- San Francisco Veterans Affairs Medical Center, San Francisco, 94121, USA
| | - Huanan Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Min Zhou
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
- Zhejiang University-University of Edinburgh Institute (ZJU-UoE Institute), School of Medicine, Zhejiang University, Haining, 314400, China.
- Institute of Translational Medicine, Zhejiang University, Hangzhou, 310009, China.
- Key Laboratory of Cancer Prevention and Intervention, National Ministry of Education, Zhejiang University, Hangzhou, 310009, China.
| | - Changyou Gao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cell and Regenerative Medicine, Zhejiang University, Hangzhou, 310058, China.
| | - Lei Zhang
- Research Center for Humanoid Sensing, Zhejiang Lab, Hangzhou, 311100, China.
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
| | - Yang Zhu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, China.
- Binjiang Institute of Zhejiang University, Hangzhou, 310053, China.
- Key Laboratory of Cardiovascular Intervention and Regenerative Medicine of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China.
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Chandrasekharan HK, McShane EP, Dhaliwal K, Thomson RR, Tanner MG. Ultrafast laser ablation of a multicore polymer optical fiber for multipoint light emission. OPTICS EXPRESS 2021; 29:20765-20775. [PMID: 34266158 DOI: 10.1364/oe.424494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/26/2021] [Indexed: 06/13/2023]
Abstract
We demonstrate the use of ultrafast laser pulses to precisely ablate the side of polymer multicore optical fibres (MCF) in such a way that light is efficiently coupled out of a set of MCF cores to free space. By individually exciting sets of MCF cores, this flexible "micro-window" technology allows the controllable generation of light sources at multiple independently selectable locations along the MCF. We found that the maximum fraction of light that could be side coupled from the MCF varied between 55% and 73%.
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3
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Oxidative Effects during Irreversible Electroporation of Melanoma Cells-In Vitro Study. Molecules 2020; 26:molecules26010154. [PMID: 33396317 PMCID: PMC7796376 DOI: 10.3390/molecules26010154] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/15/2020] [Accepted: 12/28/2020] [Indexed: 12/14/2022] Open
Abstract
Irreversible electroporation (IRE) is today used as an alternative to surgery for the excision of cancer lesions. This study aimed to investigate the oxidative and cytotoxic effects the cells undergo during irreversible electroporation using IRE protocols. To do so, we used IRE-inducing pulsed electric fields (PEFs) (eight pulses of 0.1 ms duration and 2-4 kV/cm intensity) and compared their effects to those of PEFs of intensities below the electroporation threshold (eight pulses, 0.1 ms, 0.2-0.4 kV/cm) and the PEFs involving elongated pulses (eight pulses, 10 ms, 0.2-0.4 kV/cm). Next, to follow the morphology of the melanoma cell membranes after treatment with the PEFs, we analyzed the permeability and integrity of their membranes and analyzed the radical oxygen species (ROS) bursts and the membrane lipids' oxidation. Our data showed that IRE-induced high cytotoxic effect is associated both with irreversible cell membrane disruption and ROS-associated oxidation, which is occurrent also in the low electric field range. It was shown that the viability of melanoma cells characterized by similar ROS content and lipid membrane oxidation after PEF treatment depends on the integrity of the membrane system. Namely, when the effects of the PEF on the membrane are reversible, aside from the high level of ROS and membrane oxidation, the cell does not undergo cell death.
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Dolganova IN, Shikunova IA, Zotov AK, Shchedrina MA, Reshetov IV, Zaytsev KI, Tuchin VV, Kurlov VN. Microfocusing sapphire capillary needle for laser surgery and therapy: Fabrication and characterization. JOURNAL OF BIOPHOTONICS 2020; 13:e202000164. [PMID: 32681714 DOI: 10.1002/jbio.202000164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/21/2020] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
A sapphire shaped capillary needle designed for collimating and focusing of laser radiation was proposed and fabricated by the edge-defined film-fed growth technique. It features an as-grown surface quality, high transparency for visible and near-infrared radiation, high thermal and chemical resistance and the complex shape of the tip, which protects silica fibers. The needle's geometrical parameters can be adjusted for use in various situations, such as type of tissue, modality of therapy and treatment protocol. The focusing effect was demonstrated numerically and observed experimentally during coagulation of the ex vivo porcine liver samples. This needle in combination with 0.22NA optical fiber allows intensive and uniform coagulation of 150 mm3 volume interstitially and 30 mm3 superficially by laser exposure with 280 J without tissue carbonization and fiber damaging along with delicate treatment of small areas. The demonstrated results reveal the perspectives of the proposed sapphire microfocusing needle for laser surgery and therapy.
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Affiliation(s)
- Irina N Dolganova
- Institute of Solid State Physics of the Russian Academy of Sciences, Chernogolovka, Russia
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- Bauman Moscow State Technical University, Moscow, Russia
| | - Irina A Shikunova
- Institute of Solid State Physics of the Russian Academy of Sciences, Chernogolovka, Russia
| | - Arsen K Zotov
- Institute of Solid State Physics of the Russian Academy of Sciences, Chernogolovka, Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
| | - Marina A Shchedrina
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Igor V Reshetov
- Institute for Cluster Oncology, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
- Academy of Postgraduate Education FSCC FMBA, Moscow, Russia
| | - Kirill I Zaytsev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia
| | - Valery V Tuchin
- Saratov State University, Saratov, Russia
- Institute of Precision Mechanics and Control of the Russian Academy of Sciences, Saratov, Russia
- Tomsk State University, Tomsk, Russia
| | - Vladimir N Kurlov
- Institute of Solid State Physics of the Russian Academy of Sciences, Chernogolovka, Russia
- Institute for Regenerative Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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Lee J, Jung JH, Kim WW, Moon SH, Jeong JH, Park JY, Jeong JY, Lee H, Sohn IB, Kim CH, Park HY. Comparison of laser ablation using multidirectional and forward-firing fibers in breast cancer. MINIM INVASIV THER 2018; 27:292-299. [DOI: 10.1080/13645706.2018.1427605] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Jeeyeon Lee
- Department of Surgery, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Jin Hyang Jung
- Department of Surgery, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Wan Wook Kim
- Department of Surgery, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - So Hyang Moon
- Department of Surgery, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Jae-Hwan Jeong
- Cell and Matrix Research Institute, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Ji-Young Park
- Department of Pathology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Ji Yun Jeong
- Department of Pathology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Ho Lee
- School of Mechanical Engineering, Kyungpook National University, Daegu, Republic of Korea
| | - Ik-Bu Sohn
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Chang Hwan Kim
- School of Industrial Technology, Division of Mechanical Engineering Technology, Yeungnam University College, Daegu, Republic of Korea
| | - Ho Yong Park
- Department of Surgery, Kyungpook National University School of Medicine, Daegu, Republic of Korea
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6
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Yang TD, Park K, Kim HJ, Im NR, Kim B, Kim T, Seo S, Lee JS, Kim BM, Choi Y, Baek SK. In vivo photothermal treatment with real-time monitoring by optical fiber-needle array. BIOMEDICAL OPTICS EXPRESS 2017; 8:3482-3492. [PMID: 28717583 PMCID: PMC5508844 DOI: 10.1364/boe.8.003482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 05/17/2017] [Accepted: 05/19/2017] [Indexed: 06/07/2023]
Abstract
Photothermal treatment (PTT) using gold nanoshells (gold-NSs) is accepted as a method for treating cancer. However, owing to restrictions in therapeutic depth and skin damage caused by excessive light exposure, its application has been limited to lesions close to the epidermis. Here, we demonstrate an in vivo PTT method that uses gold-NSs with a flexible optical fiber-needle array (OFNA), which is an array of multiple needles in which multimode optical fibers are inserted, one in each, for light delivery. The light for PTT was directly administrated to subcutaneous tissues through the OFNA, causing negligible thermal damage to the skin. Enhancement of light energy delivery assisted by the OFNA in a target area was confirmed by investigation using artificial tissues. The ability of OFNA to treat cancer without causing cutaneous thermal damage was also verified by hematoxylin and eosin (H&E) staining and optical coherence tomography in cancer models in mice. In addition, the OFNA allowed for observation of the target site through an imaging fiber bundle. By imaging the activation of the injected gold-NSs, we were able to obtain information on the PTT process in real-time.
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Affiliation(s)
- Taeseok Daniel Yang
- School of Biomedical Engineering, Korea University, Seoul 02841, South Korea
| | - Kwanjun Park
- Department of Bio-Convergence Engineering, Korea University, Seoul 02841, South Korea
| | - Hyung-Jin Kim
- Department of Bio-Convergence Engineering, Korea University, Seoul 02841, South Korea
| | - Nu-Ri Im
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Korea University, Seoul 02841, South Korea
| | - Byoungjae Kim
- Department of Physiology, Korea University, Seoul 02841, South Korea
| | - TaeHoon Kim
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Korea University, Seoul 02841, South Korea
| | - Sohyun Seo
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
| | - Jae-Seung Lee
- Department of Materials Science and Engineering, Korea University, Seoul 02841, South Korea
| | - Beop-Min Kim
- School of Biomedical Engineering, Korea University, Seoul 02841, South Korea
- Department of Bio-Convergence Engineering, Korea University, Seoul 02841, South Korea
| | - Youngwoon Choi
- School of Biomedical Engineering, Korea University, Seoul 02841, South Korea
- Department of Bio-Convergence Engineering, Korea University, Seoul 02841, South Korea
| | - Seung-Kuk Baek
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Korea University, Seoul 02841, South Korea
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7
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Nguyen H, Arnob MMP, Becker AT, Wolfe JC, Hogan MK, Horner PJ, Shih WC. Fabrication of multipoint side-firing optical fiber by laser micro-ablation. OPTICS LETTERS 2017; 42:1808-1811. [PMID: 28454166 PMCID: PMC5769456 DOI: 10.1364/ol.42.001808] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A multipoint, side-firing design enables an optical fiber to output light at multiple desired locations along the fiber body. This provides advantages over traditional end-to-end fibers, especially in applications requiring fiber bundles such as brain stimulation or remote sensing. This Letter demonstrates that continuous wave (CW) laser micro-ablation can controllably create conical-shaped cavities, or side windows, for outputting light. The dimensions of these cavities determine the amount of firing light and their firing angle. Experimental data show that a single side window on a 730 μm fiber can deliver more than 8% of the input light. This can be increased to more than 19% on a 65 μm fiber with side windows created using femtosecond laser ablation and chemical etching. Fine control of light distribution along an optical fiber is critical for various biomedical applications such as light-activated drug-release and optogenetics studies.
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Affiliation(s)
- Hoang Nguyen
- Program of Materials Science & Engineering, University of Houston, TX 77204
| | | | - Aaron T Becker
- Department of Electrical & Computer Engineering, University of Houston, TX 77204
| | - John C Wolfe
- Department of Electrical & Computer Engineering, University of Houston, TX 77204
| | | | | | - Wei-Chuan Shih
- Program of Materials Science & Engineering, University of Houston, TX 77204
- Department of Electrical & Computer Engineering, University of Houston, TX 77204
- Department of Biomedical Engineering, University of Houston, TX 77204
- Department of Chemistry, University of Houston, TX 77204
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Kim M, An J, Kim KS, Choi M, Humar M, Kwok SJJ, Dai T, Yun SH. Optical lens-microneedle array for percutaneous light delivery. BIOMEDICAL OPTICS EXPRESS 2016; 7:4220-4227. [PMID: 27867727 PMCID: PMC5102534 DOI: 10.1364/boe.7.004220] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 09/09/2016] [Accepted: 09/14/2016] [Indexed: 05/08/2023]
Abstract
The limited penetration depth of light in skin tissues is a practical bottleneck in dermatologic applications of light-induced therapies, including anti-microbial blue light therapy and photodynamic skin cancer therapy. Here, we demonstrate a novel device, termed optical microneedle array (OMNA), for percutaneous light delivery. A prototype device with a 11 by 11 array of needles at a spacing of 1 mm and a length of 1.6 mm was fabricated by press-molding poly-(lactic acid) (PLA) polymers. The device also incorporates a matched microlens array that focuses the light through the needle tips at specific points to achieve an optimal intensity profile in the tissue. In experiments done with bovine tissues, the OMNA enabled us to deliver a total of 7.5% of the input photons at a wavelength of 491 nm, compared to only 0.85% without the device. This 9-fold enhancement of light delivery was close to the prediction of 10.8 dB by ray-tracing simulation and is expected to increase the effective treatment depth of anti-microbial blue light therapy significantly from 1.3 to 2.5 mm in human skin.
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Affiliation(s)
- Moonseok Kim
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
- Department of Physics, Korea University, Seoul 136-701, South Korea
- These authors contributed equally
| | - Jeesoo An
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
- These authors contributed equally
| | - Ki Su Kim
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
- These authors contributed equally
| | - Myunghwan Choi
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
- Department of Biomedical Engineering, Sungkyunkwan University; Center for Neuroscience and Imaging Research, Institute for Basic Science, Suwon, South Korea
| | - Matjaž Humar
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
- Condensed Matter Department, J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia
- Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000, Ljubljana, Slovenia
| | - Sheldon J. J. Kwok
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
- Harvard-MIT Health Sciences and Technology, Cambridge, MA 02139, USA
| | - Tianhong Dai
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
| | - Seok Hyun Yun
- Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Cambridge, MA 02139, USA
- Harvard-MIT Health Sciences and Technology, Cambridge, MA 02139, USA
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Lee J, Jung JH, Kim WW, Hwang SO, Park JY, Jeong JY, Kim C, Sohn IB, Lee H, Park HY. Ultrasound-Guided Laser Ablation Using Multidirectional-Firing Fiber for Papillary Thyroid Carcinoma: An Ex Vivo Study with Evaluation of Tumor Cell Viability. Photomed Laser Surg 2016; 34:300-4. [DOI: 10.1089/pho.2016.4088] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Jeeyeon Lee
- Department of Surgery, Breast Cancer Center, Kyungpook National University Medical Center, Daegu, Republic of Korea
| | - Jin Hyang Jung
- Department of Surgery, Breast Cancer Center, Kyungpook National University Medical Center, Daegu, Republic of Korea
| | - Wan Wook Kim
- Department of Surgery, Breast Cancer Center, Kyungpook National University Medical Center, Daegu, Republic of Korea
| | - Seung Ook Hwang
- Department of Surgery, Breast Cancer Center, Kyungpook National University Medical Center, Daegu, Republic of Korea
| | - Ji Young Park
- Department of Pathology, Breast Cancer Center, Kyungpook National University Medical Center, Daegu, Republic of Korea
| | - Ji Yun Jeong
- Department of Pathology, Breast Cancer Center, Kyungpook National University Medical Center, Daegu, Republic of Korea
| | - Changhwan Kim
- School of Mechanical Design & Manufacturing, Busan Institute of Science and Technology, Busan, Republic of Korea
| | - Ik-Bu Sohn
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Ho Lee
- School of Mechanical Design & Manufacturing, Busan Institute of Science and Technology, Busan, Republic of Korea
| | - Ho Yong Park
- Department of Surgery, Breast Cancer Center, Kyungpook National University Medical Center, Daegu, Republic of Korea
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Lee SH, Ryu YT, Son DH, Jeong S, Kim Y, Ju S, Kim BH, Han WT. Radial-firing optical fiber tip containing conical-shaped air-pocket for biomedical applications. OPTICS EXPRESS 2015; 23:21254-21263. [PMID: 26367974 DOI: 10.1364/oe.23.021254] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report a novel radial-firing optical fiber tip containing a conical-shaped air-pocket fabricated by deforming a hollow optical fiber using electric arc-discharge process. The hollow optical fiber was fusion spliced with a conventional optical fiber, simultaneously deforming into the intagliated conical-shaped region along the longitudinal fiber-axis of the fiber due to the gradual collapse of the cavity of the hollow optical fiber. Then the distal-end of the hollow optical fiber was sealed by the additional arc-discharge in order to obstruct the inflow of an external bio-substance or liquid to the inner air surface during the surgical operations, resulting in the formation of encased air-pocket in the silica glass fiber. Due to the total internal reflection of the laser beam at the conical-shaped air surface, the laser beam (λ = 632.8 nm) was deflected to the circumferential direction up to 87 degree with respect to the fiber-axis.
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11
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Kim C, Jeon MJ, Jung JH, Yang JD, Park H, Kang HW, Lee H. Fabrication of novel bundled fiber and performance assessment for clinical applications. Lasers Surg Med 2014; 46:718-25. [DOI: 10.1002/lsm.22284] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Changhwan Kim
- School of Mechanical Engineering; Kyungpook National University; Daegu 702-701 Korea
| | - Myung Jin Jeon
- School of Mechanical Engineering; Kyungpook National University; Daegu 702-701 Korea
| | - Jin Hyang Jung
- Department of surgery, School of Medicine; Kyungpook National University; Daegu 702-210 Korea
| | - Jung dug Yang
- Department of Plastic and Reconstructive Surgery; School of Medicine, Kyungpook National University; Daegu 702-210 Korea
| | - Hoyong Park
- Department of surgery, School of Medicine; Kyungpook National University; Daegu 702-210 Korea
| | - Hyun Wook Kang
- Department of Biomedical Engineering and Center for Marine-integrated Biomedical Technology (BK21 Plus); Pukyong National University; Busan 608-737 Korea
| | - Ho Lee
- School of Mechanical Engineering; Kyungpook National University; Daegu 702-701 Korea
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