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Development of a Distal Tip Extension Mechanism for Endoscopes

Kadhim, Ibrahim F.
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1418314132

Abstract Details

2015, Master of Science (MS), Ohio University, Mechanical Engineering (Engineering and Technology).
Colonoscopy is the most common procedure to detect and diagnose colon diseases, such as colorectal cancer. However, endoscopists are occasionally unable to reach some areas in the colon to thoroughly examine the colon, especially the cecum. The significance of the distal tip extension mechanism (DTEM) arises when the insertion tube of the colonoscope is no longer able to move further inside the colon and when a longer insertion tube is needed. The main focus of this research is to investigate the development of a novel distal tip extension mechanism (DTEM). To characterize the performance of the DTEM, the ability of the DTEM to extend the distal tip of the colonoscope 16 cm is investigated. To determine the maximum number of turns that the extension knob needs to make in order to move the distal tip 16 cm, the DTEM is used to displace the distal tip in different colon configurations using the silicon tube of colonoscopy training model (CTM). To measure the effective of implanting the DTEM in the colonoscope on the flexibility of the insertion tube, a compliance test is performed. To find the bending radius and bending angle at which the DTEM fails to extend the distal tip 16 cm, bending tests are conducted. The DTEM could enable colonoscopists to reach spots in the colon within a 16 cm limit where regular colonoscopes usually fail. The experimentally collected data was presented and discussed to characterize the performance of the DTEM. The results showed that the DTEM is able to extend the distal tip 16 cm while the colon is in various configurations. Additionally, the impact of implanting the DTEM on the flexibility of the insertion tube was determined. The bending radius and the bending angle at which the DTEM was not able to move the distal tip 16 cm were pinpointed. The results of this research suggest that the DTEM will be an effective tool to help colonoscopists performing better colonoscopy. Furthermore, it will increase the completeness rate of colonoscopy.
Choi Junghun (Advisor)
130 p.
Mechanical Engineering
Extension Mechanism; Colonoscopy; Distal Tip; Loops in Colon; Extension Knob; Telescoping Shaft; Extension Process

Recommended Citations

Citations

  • Kadhim, I. F. (2015). Development of a Distal Tip Extension Mechanism for Endoscopes [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1418314132

    APA Style (7th edition)

  • Kadhim, Ibrahim. Development of a Distal Tip Extension Mechanism for Endoscopes. 2015. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1418314132.

    MLA Style (8th edition)

  • Kadhim, Ibrahim. "Development of a Distal Tip Extension Mechanism for Endoscopes." Master's thesis, Ohio University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1418314132

    Chicago Manual of Style (17th edition)

ohiou1418314132
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© 2015, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.