Abstract
This paper presents the usefulness and possibility of fluid for instruments for minimally invasive surgery (MIS). MIS such as laparoscopic surgery and thoracoscopic surgery continues to gain popularity and manipulation of internal organs in a minimally invasive manner is highly required. For such requirements, development of new MIS instruments other than a multi-degree-of-freedom forceps is necessary. Fluid can go in and out of a human body through a small incision or natural orifices. Its usefulness could create new inventions in the development of MIS instruments. Fluid is also advantageous over electricity in cost, sterilization and elimination of the risk of an electric shock. This paper introduces surgical instruments using fluid we have recently developed to discuss its usefulness and possibility. Those are an assemblable hand driven by water pressure, a sound based force sensor, a lung suction positioner, and an air-driven multi-tube propulsion for a large intestine endoscope.
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