Development of neuromuscular response evaluation algorithm using position information from motion sensors

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K08921
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 55050:Anesthesiology-related
• Research Institution: Nagoya University
• Principal Investigator: Nakamura Nozomi 名古屋大学, 医学部附属病院, 助教 (30444409)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: モーションセンサ / 磁気センサ / 加速度センサ / 神経筋反応 / 筋弛緩モニター

Outline of Final Research Achievements

Monitoring muscle relaxation and accurately understanding the state of neuromuscular response during surgery are critically important for ensuring patient safety during the perioperative period. We conducted a preliminary study by devising a method that involves attaching a single-axis magneto sensor (wired) near the tip of the thumb to monitor movement during ulnar nerve stimulation. In this study, using a prototype device based on this invention, we explored not only the evaluation of anesthesia depth during surgery but also the standardization methods for comparing the maximum detection conditions of joint movements and multiple measurements of the human body. Additionally, we examined the specifications required for measuring devices utilizing multiple and multi-axis magneto sensors, as well as the methods for analyzing the measured magneto signals.

Free Research Field

麻酔

Academic Significance and Societal Importance of the Research Achievements

患者の周術期における安全管理のためには、その個別状況に応じ患者の神経筋反射を正確に評価することが非常に有益である。例えば、手術中では筋弛緩薬の追加投与や気管チューブ抜管のタイミングの決定などに、また手術後では脳神経障害合併症の予知のための情報となる。そこで、地磁気を感知する小型のモーションセンサを脳波や筋電図などと併用しこの目的のために利用できれば、安全性を高める新たな医療機器となる。さらに運動性評価アルゴリズムを個別の状況に応じて作成できれば、周術期関係だけでなく、日常のリハビリや介護などの機器としても広い応用が期待される。