Wireless Imaging Module Assembly and Integration for Capsule Endoscopic Applications

Abstract:

Various breakthroughs have being made recently in Capsule endoscopy (CE). As the technology gets more matured with more clinical acceptance rate, it’s time to explore the best way for fabricating, packaging and integrating the CE. This paper will present the development of a compact high resolution image module with a VGA CMOS sensor and in house RF-Baseband IC chip for capsule endoscopic applications. The complete module, inclusive of lens, measures 11.5 mm in diameter by 28 mm in length have being able to design, fabricate and assemble. 640x260 CMOS sensor, 0201 capacitors, resistors and LEDs, are assembled onto a rigid-flex PCB with processes such as reflow heating and auto highly accurate pick and place die placement. The optical imaging module is interfaced with a RF communication unit, consisting of a base-band IC and antenna, to enable wireless transmission of dynamic image data to an external data processing and visualization unit. Animal trials produces ex-vivo GI tissue images of superior quality in terms of color saturation, contrast and resolution compared with currently available commercial capsule imaging devices.

• Periodical: Advanced Materials Research (Volume 254)
• Pages: 62-65
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.254.62
• Online since: May 2011
• Authors: Riyas Katayan, Shwe Sin Win, Rui Qi Lim, Kripesh Vaidyanathan
• Keywords: Capsule Endoscopy, Chip on Board, Flex-Rigid, Gastrointestinal Tract, Wireless-Imaging

References

[1] Gross S,M.Kollenbrandt, "Technical evolution of Medical endoscopy", Acta Polytechnica Vol.49, N0.2-3, 2009.

DOI: 10.14311/1109

[2] Kav T, Bayraktar Y, "Five year's experience with capsule endoscopy in a single center" World J. Gastroenterol. 2009;15(16):1934-1942.

DOI: 10.3748/wjg.15.1934

[3] Moglia A., Meniciassi A, Dario P, Cuschieri A, "Capsule endoscopy: progress update and challenges ahead", Nat.Rev. Gastroenterol. Hepatol.6,353-362, June 2009.

DOI: 10.1038/nrgastro.2009.69

[4] Moglia A., Meniciassi A, Dario P, " Wireless capsule endoscopy: from diagnostic devices to multipurpose robotic systems, Biomed Microdevices 9:235-243, 2007.

DOI: 10.1007/s10544-006-9025-3

[5] Yawen Chan; Meng, M.Q.H.; Xiaona Wang;"A prototype design of wireless capsule endoscope" IEEE International Conference Mechatronics and Automation, 2005 Volume 1, 29 July-1 Aug. 2005 Page(s):400 – 403.

DOI: 10.1109/icma.2005.1626580

[6] Xinkai Chen; Xiaoyu Zhang; Linwei Zhang; Xiaowen Li; Nan Qi; Hanjun Jiang; Zhihua Wang; "A Wireless Capsule Endoscope System With Low-Power Controlling and Processing ASIC" IEEE Transactions on Biomedical Circuits and Systems, Volume 3, Issue 1, Feb. 2009 Page(s):11 – 22.

DOI: 10.1109/tbcas.2008.2006493