Pressure Measurement Method for Liquid Medicine Injected from a Syringe and its Application in Training Novices

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  • 注射器薬液圧の測定法と応用に関する研究
  • チュウシャキ ヤクエキアツ ノ ソクテイホウ ト オウヨウ ニ カンスル ケンキュウ

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Abstract

The purpose of this research is to develop a pressure measurement system and a pressure transducer for an injector for liquid medicine. By obtaining continuous measurements of the pressure of blood or liquid medicine delivered using an injector, changes in pressure with time, the time required, and pressure patterns can be determined from the data. Using this information, differences in injector manipulation between a student nurse and a nurse can be identified, or a student nurse's mastery of the process can be determined. The principle of the pressure measurement of liquid medicine in a syringe is as follows: a tube connects the syringe and pressure transducer, so that the transducer can measure the pressure of the liquid medicine. The transducer uses is a very small, commercially available strain gauge type pressure sensor, so that pressure calibration is not required. This pressure measuring system can be applied to a simulator for injection skill training programs. It has been proven that the maximum pressure increases and the manipulation time duration decreases for the data feedback group over a number of training sessions, indicating that the developed pressure measuring system is effective for injection training.

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