SCI ADV:测血糖不用再扎手指!眨眼之间“分分钟搞定”| Science子刊

2018-02-27 M记 生物探索

通过仪器进行手指采血监测血糖水平是糖尿病患者日常生活的一项常规工作。但反复扎手指,却降低了糖尿病患者的依从性。现在,韩国一研究小组想到了解决方案:新型智能隐形眼镜,非常便捷就可以检测眼泪中的血糖水平。

通过仪器进行手指采血监测血糖水平是糖尿病患者日常生活的一项常规工作。但反复扎手指,却降低了糖尿病患者的依从性。现在,韩国一研究小组想到了解决方案:新型智能隐形眼镜,非常便捷就可以检测眼泪中的血糖水平。

事实上,这个概念并不是第一次提出,早在2014年,谷歌就宣布正在开发一种葡萄糖检测隐形眼镜,但直至目前,尚未完成开发。

最新这一突破是由UNIST的材料科学与工程学院的Jang-ung Park教授和UNIST的电气与计算机工程学院的Franklin Bien教授联合成均馆大学先进材料科学与工程学院的Jung Heon Lee教授所完成。

为了解决隐形眼镜不适的问题,Park教授和他的研究小组推出了一种新型智能隐形眼镜,它使用由高度可拉伸和透明材料制成的电极。这款清晰灵活的“镜头”还包含一个葡萄糖传感器,可将电信号发送至LED。借助这款传感器,患者可以使用眼镜中的嵌入式无线天线实时地传输健康信息。

据研究团队介绍,这款创新的智能隐形眼镜,柔软而有弹性,只有少数小的刚性部件,尽可能让佩戴者舒适。

“这些智能隐形眼镜由透明纳米材料制成,因此不会妨碍佩戴者的视线,”第一作者Jihun Park教授说道,“隐形眼镜内的组件围绕边缘排列,远离瞳孔。它们由一个葡萄糖传感器,一个朝外的小型绿色LED,一个天线和一个整流器组成,全部由超细柔性典型连接。天线和整流器接收来自发射器的射频信号,并将其转换成为葡萄糖监测器和LED供电所需的微量电力。因此智能隐形眼镜传感器不需要单独的电源。”

如上图所示,激活LED像素的电源和葡萄糖传感器通过天线无线传输到眼镜。在泪液中检测到阈值以上的葡萄糖浓度之后,LED像素就关闭了。来源: Usage Restrictions

目前,研究小组已经成功地在活兔身上通过非侵入性体内测试。兔子在反复眨眼时没有显示出任何异常行为,当葡萄糖浓度超过阈值时,LED像素被关闭。此外,在无线操作过程中,这种智能隐形眼镜仍然可以稳定地保持眼睛的温度,不需要额外加热。

尽管该装置尚未在人体中进行测试。研究小组表示:“智能隐形眼镜在活体兔子的体内测试结果,为未来在人眼中使用进行无创健康监护提供了实质性承诺。” 研究结果发表在1月25日的《Science Advances》杂志上。DOI: 10.1126/sciadv.aap9841

“我们的智能隐形眼镜提供了一个无线、连续和无创监测生理状况的平台,以及检测与眼部和其他疾病相关的生物标志物的平台,”Park教授说。 “它还提供了在其他领域扩展适用性的潜力,比如用于药物输送等智能设备。”

强生公司葡萄糖监测部门前任首席科学家John L. Smith对此却不是太乐观,他表示:在柔性隐形眼镜上构建电路令人印象深刻,但是,眼泪中的葡萄糖并不能足够可靠的反映血液中的血糖水平。为了防止血糖升高或降低到危险水平,糖尿病患者必须注意他们的饮食,有时还会注射胰岛素。这就是为什么准确的血糖数是非常关键的。所以必须要以极高的可靠性来做血糖测量,不然可能会让人们受到伤害。

研究人员表示,尽管在人类身上应用这款隐形眼镜,可能还有一段路要走,但研究结果证明了概念的可行性。

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    2018-12-10 zz82
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    2018-03-01 186****0580(小山羊)

    学习了谢谢了

    0

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    2018-03-01 jichang
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    2018-03-01 jihuaijun1112

    学习学习学习

    0

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