基于无冲动偏移MPC控制的全自动胰岛素输送系统在糖尿病大鼠中的验证
Jhon E Goez-Mora1, Natalia Arbelaez-Córdoba2, Norman Balcazar-Morales2
1Grupo GITA, Facultad de Minas, Universidad Nacional de Colombia, Medellín, Colombia.
PloS one
|September 4, 2025
概括
在糖尿病大鼠中,自动化胰岛素输送系统 (i- AiDS) 有效调节了血糖,在83. 4%的时间内保持目标水平. 这项临床前研究证实了对实际糖尿病的控制策略.
科学领域:
- 生物医学工程
- 内分泌学
- 控制系统
背景情况:
- 1型糖尿病需要持续的血糖监测和胰岛素治疗.
- 现有的自动化胰岛素输送系统 (i-AiDS) 旨在减少患者的负担.
- 挑战包括管理食物等外部干扰和固有的模型不准确性.
研究的目的:
- 验证i-AiDS的无偏移冲动区域模型预测控制策略.
- 在糖尿病小鼠模型中评估系统处理干扰的能力.
- 建立未来人类临床试验的基础.
主要方法:
- 使用糖尿病老鼠模型开发和验证i-AiDS (因毒素诱导).
- 使用持续的葡萄糖监测和定制的胰岛素来调节.
- 使用无偏移的冲动区域模型预测控制策略,对参数进行估计和调整,最终进行了72小时的自主测试.
主要成果:
- 控制器在83. 4%的时间内保持血糖在80-180 mg/ dL范围内.
- 有效管理未预告的碳水化合物摄入量和生理障碍.
- 峰值高血糖 (320 mg/ dL) 在50分钟内得到调节;轻度低血糖很少发生 (3.62±1. 8例/ 患者).
- 模型预测和传感器数据的中位数绝对相对差异为24.66%,表明工厂模型不匹配的有效处理.
结论:
- 在临床前环境中,经过验证的i- AiDS在自主血糖调节方面表现出有效性.
- 没有偏移的冲动区域模型预测控制策略成功管理了干扰.
- 建议进一步提高模型准确性和参数调整,以提高长期研究和人体试验的性能.
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