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Adv Mat Tech:科学家研发出纸质版“即时诊断工具”

2017-08-24 Flora 生物探索

近日,来自于普渡大学的科学家们推出一款新型的医疗检测设备——完全由纸制成,利用电化学方法分析生物标志物,通过纸张颜色变化反馈检测结果,实现疾病诊疗的目的。


一种新型的纸质版医学诊断设备(图片来源:普渡大学)

近日,来自于普渡大学的科学家们推出一款新型的医疗检测设备——完全由纸制成,利用电化学方法分析生物标志物,通过纸张颜色变化反馈检测结果,实现疾病诊疗的目的。

这一自我供电、纸质版诊断装置(self-powered,paper-based electrochemical devices,SPEDs)可以与便携式恒电位仪相连,实现自我供电、自动化检测过程,便于患者自己操作。它的设计定位是“即时诊断工具”。

普渡大学的工业和生物医学工程助理教授Ramses V. Martinez将这一设备比喻成一个“便携式实验室”,并不需要水电或者其他的高端设备。他和团队希望该检测装置可以服务于偏远地区或者军事基地的人,便于他们自行检测疾病。相关研究成果于8月22日发表在《Advanced Materials Technologies》期刊。

根据视频展示,SPEDs的表层由未经处理的纤维素纸构建血液样本的检测通道,共设置了4个电化学检测区域和10个比色分析区域。这些“微流控通道”允许精准的检测,且通过颜色的变化反馈特定的检测结果。

为了准确读取颜色信息,研究团队开发了一个机器视觉算法,用于自动识别和量化10个比色分析区域的颜色变化。通过手机拍照功能获取颜色图像,借助算法程序分析颜色变化背后的病理信息,从而为快速提供诊断结果创造了可能,并有望与远程医疗结合。

SPEDs的底层是一个“摩擦发电机”或者热电发生器(TEG),通过摩擦或者挤压产生运行诊断检测所必须的电流。为了便于使用,研究人员设计一个廉价的手持装置——恒电位仪,它可以与SPED简易连接,便于患者自行检测。

SPEDs有着低成本、轻便、灵活和便于快速使用的特点,其具体的检测过程:将患者的血液点滴至设备的圆形区域,或者将SPEDs的“自我移液检测区域”直接浸入样本中。随后,SPEDs(血液样本分析)+便携式恒电位仪(供电)+机器视觉算法(识别颜色编码的信息)的组合,即可实现诊断过程。

SPEDs可以执行“多路复用”(multiplexed)的分析任务,即检测多种生物标志物,例如葡萄糖、尿酸、乳酸、酮、白细胞等等,这些指标与肾脏功能、营养不良和贫血有关。下一步,研究团队将继续优化这一设备,用于更复杂的检测任务,例如登革热、黄热病、疟疾、艾滋病和肝炎等疾病。

原始出处:

Aniket Pal,Hugo E. Cuellar,Randy Kuang,et al.Self-Powered, Paper-Based Electrochemical Devices for Sensitive Point-of-Care Testing.DOI: 10.1002/admt.201700130

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    2017-11-24 shock_melon
  2. [GetPortalCommentsPageByObjectIdResponse(id=1652214, encodeId=341e165221475, content=<a href='/topic/show?id=13d01e24509' target=_blank style='color:#2F92EE;'>#TEC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17245, encryptionId=13d01e24509, topicName=TEC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=852f24292001, createdName=shock_melon, createdTime=Fri Nov 24 10:03:00 CST 2017, time=2017-11-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1300046, encodeId=d6d2130004642, content=<a href='/topic/show?id=ed5ee332423' target=_blank style='color:#2F92EE;'>#研发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73324, encryptionId=ed5ee332423, topicName=研发)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=aea0290, createdName=lqvr, createdTime=Sat Aug 26 11:03:00 CST 2017, time=2017-08-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237322, encodeId=4d6323e32262, content=谢谢分享谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160914/IMG57D82E721DB581755.jpg, createdBy=4fc81933929, createdName=明天会更好!, createdTime=Sat Aug 26 09:19:15 CST 2017, time=2017-08-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237321, encodeId=558c23e3214d, content=谢谢分享谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160914/IMG57D82E721DB581755.jpg, createdBy=4fc81933929, createdName=明天会更好!, createdTime=Sat Aug 26 09:19:07 CST 2017, time=2017-08-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1723629, encodeId=ccf51e236290a, content=<a href='/topic/show?id=7b08915917b' target=_blank style='color:#2F92EE;'>#诊断工具#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=79, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=91591, encryptionId=7b08915917b, topicName=诊断工具)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c37033510464, createdName=surilei, createdTime=Wed Apr 18 15:03:00 CST 2018, time=2018-04-18, status=1, ipAttribution=)]
    2017-08-26 lqvr
  3. [GetPortalCommentsPageByObjectIdResponse(id=1652214, encodeId=341e165221475, content=<a href='/topic/show?id=13d01e24509' target=_blank style='color:#2F92EE;'>#TEC#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=17245, encryptionId=13d01e24509, topicName=TEC)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=852f24292001, createdName=shock_melon, createdTime=Fri Nov 24 10:03:00 CST 2017, time=2017-11-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1300046, encodeId=d6d2130004642, content=<a href='/topic/show?id=ed5ee332423' target=_blank style='color:#2F92EE;'>#研发#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=75, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=73324, encryptionId=ed5ee332423, topicName=研发)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=aea0290, createdName=lqvr, createdTime=Sat Aug 26 11:03:00 CST 2017, time=2017-08-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237322, encodeId=4d6323e32262, content=谢谢分享谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=78, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160914/IMG57D82E721DB581755.jpg, createdBy=4fc81933929, createdName=明天会更好!, createdTime=Sat Aug 26 09:19:15 CST 2017, time=2017-08-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=237321, encodeId=558c23e3214d, content=谢谢分享谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160914/IMG57D82E721DB581755.jpg, createdBy=4fc81933929, createdName=明天会更好!, createdTime=Sat Aug 26 09:19:07 CST 2017, time=2017-08-26, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1723629, encodeId=ccf51e236290a, content=<a href='/topic/show?id=7b08915917b' target=_blank style='color:#2F92EE;'>#诊断工具#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=79, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=91591, encryptionId=7b08915917b, topicName=诊断工具)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=c37033510464, createdName=surilei, createdTime=Wed Apr 18 15:03:00 CST 2018, time=2018-04-18, status=1, ipAttribution=)]
    2017-08-26 明天会更好!

    谢谢分享谢谢分享!

    0

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    2017-08-26 明天会更好!

    谢谢分享谢谢分享!

    0

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