Technical Brief

Development of a Distal Tip Extension Mechanism for Endoscopes1

[+] Author and Article Information
Ibrahim F. Kadhim, Rajesh Shanbhag

Department of Mechanical Engineering,
Ohio University,
Athens, OH 45701

JungHun Choi

Department of Mechanical Engineering
and Biomedical Engineering Program,
Ohio University,
Athens, OH 45701

Accepted and presented at the Design of Medical Devices Conference (DMD2014), Minneapolis, MN, April 7–10, 2014. DOI: 10.1115/1.4027074

Manuscript received February 21, 2014; final manuscript received March 3, 2014; published online July 21, 2014. Editor: Arthur G. Erdman.

J. Med. Devices 8(3), 030929 (Jul 21, 2014) (2 pages) Paper No: MED-14-1080; doi: 10.1115/1.4027074 History: Received February 21, 2014; Revised March 03, 2014

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Grahic Jump Location
Fig. 1

The colonoscope with the components of the DTEM: a telescoping shaft, an extension knob, a spring, and a DTEL

Grahic Jump Location
Fig. 2

The DTEL consists of three tubes and it is connected to the distal tip and the spring

Grahic Jump Location
Fig. 3

Testing the prototype using the colon model in an alpha loop setup. Full extension of the distal tip is shown via a digital caliper.

Grahic Jump Location
Fig. 4

Plots (a)–(d) are for the straight setup, the mild curve setup, the sharp bend setup, and the alpha loop setup, respectively. Error bars show the max and min number of turns at each distance.




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