Development of Safety Testing Technologies of Defecation Assist Devices

Bibliographic Survey and Development of a Rectum Model Sheet
  • Keiko HommaEmail author
  • Kiyoshi Fujiwara
  • Isamu Kajitani
  • Takuya Ogure
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10917)


In Japan, the increase in the number of elderly persons needing long-term care has become a serious problem. Caregiving for elderly persons requiring intensive care is a severe burden. In particular, excretion care is one of the most demanding tasks for caregivers.

Elderly persons tend to suffer from constipation; and constipation is a particularly critical problem for bedridden patients, since chronic constipation is a potential cause of intestinal diverticulitis. Thus, mechanical intervention methods may be required to remove fecal impaction.

The aim of this study was to develop safety test methods, and determine safety test device specifications, for defecation assist devices. To this end, a bibliographic survey was conducted.

In addition, we developed a rectal model sheet for use in the abovementioned safety testing. The sheet is a single-layered square of silicone rubber, whose Young’s modulus and thickness were determined with reference to the properties of the human rectum. In future, we will assess the validity of the developed model through experimentation.


Elderly care Defecation assist device Safety test Hazardous event Bibliographic survey 



This work was funded by the ImPACT Program of the Council for Science, Technology and Innovation (Cabinet Office, Government of Japan).


  1. 1.
    Annual Report on the Aging Society 2017, Cabinet Office, Government of Japan. Accessed 9 Feb 2018. (in Japanese)
  2. 2.
    “Innovative Cybernic System for a ZERO Intensive Nursing-care Society” project, ImPACT Program. Accessed 5 Feb 2018
  3. 3.
    Sankai, Y., Suzuki, K., Hasegawa, Y. (eds.): Cybernics: Fusion of Human, Machine and Information Systems. Springer, Tokyo (2014). Scholar
  4. 4.
    Gallagher, P., O’Mahony, D.: Constipation in old age. Best Pract. Res. Cl. Ga. 23(6), 875–887 (2009). Scholar
  5. 5.
    Knight, J., Nigam, Y., Jones, A.: Effects of bedrest 2: gastrointestinal, endocrine, renal, reproductive and nervous systems. Nurs. Times 105(22), 24–27 (2009)Google Scholar
  6. 6.
    Peristeen® anal irrigation system. Accessed 5 Feb 2018
  7. 7.
    DisImpactor®. Accessed 5 Feb 2018
  8. 8.
    Yagata, K., Harada, A., Higuma, M., Ohnishi, T., Demoto, M., Tanda, Y.: Development of an evacuation care system (ultrasonic fecal disintegration and suction device). Jpn. J. Med. Instrum. 63(Suppl. 1), 59–60 (1993). (in Japanese)Google Scholar
  9. 9.
    Nakamura, E., Enomoto, H., Ohgoe, Y., Takahashi, C., Hirakuri, K., Takai, N., Nonomura, N., Yasukawa, Y., Niitsuma, J.: Study on functionalization of an intestinal infusion catheter. Jpn. J. Med. Instrum. 69(10), 534–535 (1999). (in Japanese)Google Scholar
  10. 10.
    Paran, H., Butnaru, G., Neufeld, D., Magen, A., Freund, U.: Enema-induced perforation of the rectum in chronically constipated patients. Dis. Colon Rectum 42(12), 1609–1612 (1999). Scholar
  11. 11.
    Niv, G., Grinberg, T., Dickman, R., Wasserberg, N., Niv, Y.: Perforation and mortality after cleansing enema for acute constipation are not rare but are preventable. Int. J. Gen. Med. 6, 323–328 (2013). Scholar
  12. 12.
    Christensen, P., Krogh, K., Buntzen, S., Payandeh, F., Laurberg, S.: Long-term outcome and safety of transanal irrigation for constipation and fecal incontinence. Dis. Colon Rectum 52(2), 286–292 (2009). Scholar
  13. 13.
    Hyodo, M., Sekiguti, C., Tsukahara, M., Nagai, H.: A case of penetration caused by transanal decompression tube in an obstructive transverse colon cancer. Jpn. J. Gastroenterol. Surg. 33(11), 1839–1843 (2000). (in Japanese)CrossRefGoogle Scholar
  14. 14.
    Choi, P.W.: Colorectal perforation by self-induced hydrostatic pressure: a report of two cases. J. Emerg. Med. 44(2), 344–348 (2013). Scholar
  15. 15.
    Takei, H., Ishikita, T., Roppongi, T., Fujii, T., Morishita, Y.: Rectal perforation due to the spouting hot water: a case report. Prog. Acute Abdom. Med. 13(1), 131–134 (1993). (in Japanese)CrossRefGoogle Scholar
  16. 16.
    Niwa, H.: Adverse events and control measures of gastroenterological endoscopy. Gastroenterol. Endosc. 27(Suppl.), 2510–2513 (1985). (in Japanese)CrossRefGoogle Scholar
  17. 17.
    Nishisaka, T.: Current situation and future development of water jet surgery. BME 8(1), 1–6 (1994). (in Japanese)CrossRefGoogle Scholar
  18. 18.
    Repici, A., Hassan, C., Pagano, N., Rando, G., Romeo, F., Spaggiari, P., Roncalli, M., Ferrara, E., Malesci, A.: High efficacy of endoscopic submucosal dissection for rectal laterally spreading tumors larger than 3 cm. Gastrointest. Endosc. 77(1), 96–101 (2013)CrossRefGoogle Scholar
  19. 19.
    Neill, R.W.K., George, B.: Penetrating intra-abdominal injury caused by high-pressure water jet. Brit. Med. J. 2(5653), 357–358 (1969). Scholar
  20. 20.
    De Beaux, J.L.M.: High-pressure water jet injury. Brit. Med. J. 280(6229), 1417–1418 (1980). Scholar
  21. 21.
    Yamada, H., Evans, F.G.: Strength of Biological Materials. Robert E. Krieger Publishing Co., Inc., Huntington (1973)Google Scholar
  22. 22.
    Japan Society of Respiratory Care Medicine: Tracheal aspiration guidelines 2013 (for adult patients with an artificial airway). Jpn. J. Respir. Care 30(1), 75–91 (2013). (in Japanese)Google Scholar
  23. 23.
    Burt, C.A.V.: Pneumatic rupture of the intestinal canal with experimental data showing the mechanism of perforation and the pressure required. Arch. Surg. 22(6), 875–902 (1931). Scholar
  24. 24.
    Uno, Y.: Newly devised sigmoidoscopy, type CF-SV-evaluation of safety. Jpn. J. Med. Instrum. 67(7), 289–292 (1997). (in Japanese)Google Scholar
  25. 25.
    Yamada, H.: Strength of Human Bodies and Aging: Measurements Based on the Strength of Biological Materials. Japan Broadcast Publishing Association, Tokyo (1979). (in Japanese)Google Scholar
  26. 26.
    Human organs property database for computer simulation. Accessed 5 Feb 2018
  27. 27.
    Tsuga, K., Haruma, K., Fujimura, J., Hata, J., Tani, H., Tanaka, S., Sumii, K., Kajiyama, G.: Evaluation of the colorectal wall in normal subjects and patients with ulcerative colitis using an ultrasonic catheter probe. Gastrointest. Endosc. 48(5), 477–484 (1998). Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Keiko Homma
    • 1
    Email author
  • Kiyoshi Fujiwara
    • 1
  • Isamu Kajitani
    • 1
  • Takuya Ogure
    • 1
  1. 1.National Institute of Advanced Industrial Science and Technology (AIST)TsukubaJapan

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