Technical Brief

Medical Equipment to Make Colonoscopy Procedures Safer for Physicians: Control Head Holder and Splatter Shield1

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

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

Brian Clark, Niladri Kumar Mahato

Ohio Musculoskeletal and Neurological Institute,
Ohio University,
Athens, OH 45701

David Drozek

Department of Specialty Medicine,
Ohio University,
Athens, OH 45701

JungHun Choi

Department of Mechanical Engineering,
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: 10.1115/1.4027120

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), 030953 (Jul 21, 2014) (2 pages) Paper No: MED-14-1127; doi: 10.1115/1.4027120 History: Received February 21, 2014; Revised March 03, 2014

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Shergill, A. K., McQuaid, K. R., and Rempel, D., 2009, “Ergonomics and GI Endoscopy,” Gastrointest. Endoscopy, 70(1), pp. 145–153. [CrossRef]
Siegel, J. H., 2007, “Risk of Repetitive-Use Syndromes and Musculoskeletal Injuries,” Tech. Gastrointest. Endoscopy, 9(4), pp. 200–204. [CrossRef]
Pedrosa, C. M., Farraye, F. A., Shergill, A. K., Banerjee, S., Desilets, D., Diehl, Kaul, V., Kwon, R. S., Mamula, P., Rodriguez, S. A., Varadarajulu, S., Song, L. M. W. K., and Tierney, W. M., 2010, “Minimizing Occupational Hazards in Endoscopy: Personal Protective Equipment, Radiation Safety, and Ergonomics,” Gastrointest. Endoscopy, 73(2), pp. 227–235. [CrossRef]


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Fig. 1

Control head holder modeled after considering all design requirements. The control head is held in the holder cup and the column facilitates the vertical movement of the holder cup that is supported by a base.

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Fig. 2

The CAD model of the splatter shield modeled after evaluation of all the requirements. The actuator facilitates vertical movement of the shield. The tube holder grips the insertion tube when the physician desires the use of both hands.

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Fig. 6

Change in maximum voluntary contraction force for the elbow flexor muscles (a) and for the handgrip muscles (b) following the two simulated colonoscope conditions

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Fig. 5

An example of the surface electromyographic signal for the biceps brachii and flexor carpi radialis muscles. MVC were performed and recorded using an EMG data acquisition system (BioPac Systems Inc., Goleta, CA) before and after the control head being held through a support.

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Fig. 4

Recording of EMG of the bicep and the forearms muscle while holding the colonoscope control head

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Fig. 3

The BioDex System 4.0 dynamometer to collect the MVC of bicep brachii muscles. Inset: the Jamar dynamometer used to collect the MVC of the forearms.



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