Innovation for standing work

In recent years, there has been remarkable evolution in medical technology. The laparoscopic surgery is also one of highly advanced medical technologies. While laparoscopic surgery significantly reduces physical burden on patients, surgeons and medical staff have to operate in standing posture for long hours, thus there are issues that the burden on their lower back and legs is increasing.
Under such circumstances, the actual reasons why they cannot operate with sitting on chairs are as follows:
The environment of operating room is designed to perform an operation in standing posture.The surgeons may change their positions depending on the areas and contents of treatment during the operation. Besides, many people work together on the operation while various cables for medical devices lie on the floor, so no space can be secured for any chair.  
Based on the actual situation of such surgical environment, a wearable chair "archelis" was developed with completely new concepts, taking advantage of the strength of medical-engineering collaboration and the industry-academia partnership to solve issues about physical burden of surgeons and medical staff caused by the standing posture for long hours.


Reduce the physical burden 
and improve work performance

archelis can significantly reduce fatigue of doctors caused by long hours of surgery by supporting their standing posture.
Also, it can stablize the trunk and maximize performance by distributing body weight and supporting it with shins and thighs.





Freely walk and sit anywhere you want

Thanks to a wearable type and its structure separated into right and left, it enables to repeat "walking" and "sitting" freely with wearing it.

Walking                                       Sitting




No power supply needed

No power supply is used, so there is no radio wave interference with other medical devices and no need for charging. It can be used any time without any concern. 




Easy to wear

It can be used immediately just by fastening three belts on foot, shin and thigh on each leg by yourself.


Adjust your heel to the device

and fix your foot with a belt

Fix your shin with a belt

Fix your thigh with a belt

​Co-development partner


Professor & Director
Medical Simulation Center
Board Certified Surgeon in Gastroenterology
School of Medicine
Jichi Medical University

In laparoscopic surgery that requires precise movements of the forceps with a few millimeters, the "stability of the trunk" greatly affects the stability of the operation.  Thanks to archelis which enables to repeat "walking" and "sitting" without giving burden on muscles even in a half-sitting posture for long hours, I think the stable movements during operation can be improved.  Furthermore, I have a sense of possibility that this device can support the half-sitting posture under special environments where medical workers need to go through.


Department of Biodesign
Division of Biofunctional Restoration
Institute of Biomaterial and Bioengineering
Tokyo Medical and Dental University

By fixing the angle of knees and supporting the body weight by distributing it over large areas of shins and thighs, archelis enables to reduce fatigue and maintain the stable posture.  In addition, thanks to its design individually separated into each leg, it enables us to sit on freely depending on the posture. archelis has created a new Japanese Industrial Standard (JIS).  I hope that it can be widely used in various situations in the future.



Itaru Endo

Proffessor and Chairman
Department of Gastroenterological Surgery
Graduate School of Medicine
Yokohama City University

When I first looked at archelis, I thought it's a robot. But its joints could move freely, so my feeling of hesitation completely disappeared. It was surprising that I could walk without any limitation.
I felt like I was extremely free. There is always potential fear of falling backward in the semi-fixed condition. But, there's nothing with alchelis. It is very stable. Our operation sometimes lasts for 8-12 hours. In the case of archelis, we can mostly be in the sitting posture. So, I think the fatigue of standing for 12 hours and sitting for 12 hours is totally different.

Kazunori Kasama

Weight Loss and Metabolic Surgery Center
Yotsuya Medical Cube

Absolutely easy!!  Really.
I used it when I was a surgery assistant and photographer, and it was very stable. I have lower back pain and always wear a corset during operation. But if I can sit down, the burden on my lower back becomes much less. I can be in a sitting posture, so I think the overall stability becomes high. And of course I can walk, so I think it's an advantage that I can easily switch from an surgery assistant to a scopist.

Yuichiro Otsuka

Associate Professor
Department of Surgery
School of Medicine, Toho University
Toho University Omori Medical Center

For the first time I sat down, I felt like weightless and it was easy and comfortable to sit. The doctor looking at me nearby told me that "you had a quite relaxing face like taking a bath". As I can come very close to the operating table, I think the fact that "I can make a lot of fine adjustments" makes big diffrences from simply sitting on a chair.


Product Specifications

Patent Pending
Made in JAPAN

Optional parts​

Thigh cushion


Thigh belt


Shin cushion


Shin belt​(replacement)


Carry case

Planning, production, manufacturing


NITTO Co., Ltd.




Jichi Medical University

Tokyo Medical and Dental University



Hiroaki Nishimura Design Inc.


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