Refine your search�ソスF     
Report No.
 - 

Development of balloon pressure control device for observing the complete small intestine using an ileus tube type endoscope

Seki, Takeshi; Naganawa, Akihiro*; Oka, Kiyoshi; Sato, Noriyasu*; Yoshino, Junji*

The double-balloon and capsule endoscopes are difficult to use such endoscopes in patients who suffer from intestinal obstruction and adhesion. We have developed a new endoscope that can be used in patients who suffer from these problems; the device consists of an ileus tube and an optical fiberscope (1.1 mm in diameter). When this endoscope is removed from the body at a constant speed, the entire small intestine can be observed by controlling the internal pressure of balloons of the ileus tube to sufficiently maintain the state of the bowel. In this research, we developed a device to control the internal pressure of the balloon to facilitate the observation of the entire small intestinal area. The internal pressure control device developed by us consists of an ileus tube, a medical syringe, a motor, a pressure sensor, and so on. The medical syringe is used to control the balloon's internal pressure by pushing and pulling the plunger using the motor. To realize a very accurate control performance, we incorporated a two-degrees-of-freedom control system to control the balloon internal pressure. We experimented on three aspects of the device to evaluate its performance (Reference response property, Disturbance rejection property and Maintenance of pressure level). These results suggested that it is possible to remove the ileus tube from the small intestine at a constant speed.

Accesses

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.