| Автор | Park, Sunkil |
| Автор | Koo, Kyo-in |
| Автор | Bang, Seoung Min |
| Автор | Park, Jeong Youp |
| Автор | Song, Si Young |
| Автор | Cho, Dongil ‘Dan’ |
| Дата выпуска | 2008-02-01 |
| dc.description | This paper presents a LiGA (a German acronym for lithographie, galvanoformung, abformung) process based microactuator to be used for microbiopsy in capsular endoscopes. This microactuator is designed to be integrated into a capsular endoscope and to extract tissue samples inside the small gastrointestine which a conventional endoscope cannot reach. The proposed microactuator was fabricated as a cylindrical shape of diameter 10 mm and length 1.8 mm. This actuator consists of three parts: a microbiopsy part with a microspike, an actuating part with a torsion spring and a triggering part with a shape memory alloy (SMA) heating wire and polymer string. In order to extract sample tissue, a microspike in the developed actuator moves forward and backward using the slider-crank mechanism. For low power consumption triggering, a polymer-melting scheme was applied. The SMA heating wire consumed approximately 1.5 V × 160 mA × 1 second (66.67 µWH) for triggering. The precise components of the microactuator were fabricated using the LiGA process in order to overcome the limitations in accuracy of conventional precision machining. The developed microactuator was evaluated by extracting tissue samples from the small intestine of a pig ex vivo, and examining the tissue with hematoxylin and eosin (H&E) staining protocol. The experimental tests demonstrated that the developed microactuator with microspike successfully extracted tissue samples from the pig's small intestines. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Копирайт | 2008 IOP Publishing Ltd |
| Название | A novel microactuator for microbiopsy in capsular endoscopesThis paper is an extended version of an oral paper presented at Transducers 2007: 14th International Conference on Solid State Sensors and Actuators, Lyon, France, 10–14 June, 2007. |
| Тип | paper |
| DOI | 10.1088/0960-1317/18/2/025032 |
| Electronic ISSN | 1361-6439 |
| Print ISSN | 0960-1317 |
| Журнал | Journal of Micromechanics and Microengineering |
| Том | 18 |
| Первая страница | 25032 |
| Последняя страница | 25040 |
| Аффилиация | Park, Sunkil; School of Electrical Engineering and Computer Science, EBSRC, ISRC, ASRI, NAVRC, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul 151-742, Korea |
| Аффилиация | Koo, Kyo-in; School of Electrical Engineering and Computer Science, EBSRC, ISRC, ASRI, NAVRC, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul 151-742, Korea |
| Аффилиация | Bang, Seoung Min; Department of Internal Medicine, Yonsei University College of Medicine, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-752, Korea |
| Аффилиация | Park, Jeong Youp; Department of Internal Medicine, Yonsei University College of Medicine, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-752, Korea |
| Аффилиация | Song, Si Young; Department of Internal Medicine, Yonsei University College of Medicine, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-752, Korea |
| Аффилиация | Cho, Dongil ‘Dan’; School of Electrical Engineering and Computer Science, EBSRC, ISRC, ASRI, NAVRC, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul 151-742, Korea |
| Выпуск | 2 |
