内視鏡手術に資する無針注射器の連射機構の開発とその評価

抄録

The small-diameter needleless syringe has been developed which can directly deliver a drug solution or the like to the affected area of an organ. This is important as an item contributing to endoscopic surgery for the treatment of organ failure. Also, the distinctive mechanism is that it can be injected multiple times in a single setting using a single coil spring. As a result of measuring the injection force by displacement measurement of cantilever beam method and converting the pressure, it was confirmed that the design value of 5MPa was cleared. In addition, a decrease in pressure was confirmed in single spring displacement split injection. It seems to be due to the gradual decrease of the energy stored in the spring even if the relative displacement of the spring is the same. Therefore, the mechanism is used to move the compression and release of the spring relatively. It was confirmed that the injection pressure did not decrease even after continuous injection.