Self-propelling capsule endoscopy


According to the WHO, cancer is the second leading cause of death globally. Looking at the survival rate of cancer, we could save 1.6 million people annually just by finding their cancer earlier. However the current endoscopy is too hard for people to undergo regularly, because it is painful, time consuming and examines only one organ. To clear this hurdle, we developed self-propelled capsule endoscopy.
The system is composed of disposable MiniMermaid® whose fin is attached to the existing capsule endoscope and magnetic field generating controller. The movement is controlled easily by a doctor through the entire digestive tract.
Therefore MiniMermaid can create a faster, cheaper and more comfortable gastrointestinal (GI) tract exam for all human beings.


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Company Profile

Name MU Ltd.,
Address 1-5 Yokotani, Seta Oe-cho, Otsu, Shiga, 520-2123 Japan
Establishment 2011
Capital JPY 33,000,000
Employee 5
Branch Office
Category LifeScienceRobotics


Naotake Ohtsuka

President, CEO

PhD, Graduate School of Tokyo Univ.

Emeritus Prof. of Ryukoku Univ.

Isao Iyoshi

Vice President, CFO

Seinan Univ.

Former branch manager of finance corporation

Yoshiaki Fujito

Executive Director, CTO

Master Deg., Graduate School of Ryukoku University

President of CAD design company


Date Round Amount Investors
March, 2017 Grant JPY 4,567,000 Shiga Prefecture
March, 2017 Grant JPY 2,000,000 Kansai Urban Bank
March, 2016 Grant JPY 5,926,078 Ministry of Economy, Trade and Industry
March, 2014 Grant JPY 7,908,223 Ministry of Economy, Trade and Industry