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区块链:让医疗信息走出“孤岛”

2017-09-01 05:26:09   中国青年网

随着区块链技术日益成熟,其在医疗体系中正发挥出巨大价值。

阿里健康日前宣布,与江苏常州市合作“医联体+区块链”试点项目:将最前沿的区块链科技,应用于常州医联体底层技术架构体系中。目前,项目采用低成本、高安全的方式,已实现当地部分医疗机构间安全、可控的数据互联互通,解决了长期困扰医疗机构的“信息孤岛”和数据安全问题。

“这是我国首个基于医疗场景的区块链应用。”阿里健康区块链技术负责人刘铁说,基于信息安全、医疗大数据等领域的技术积累,并结合部分开源框架技术,阿里健康研发出适合医疗场景的区块链解决方案。

常州是国家卫计委确定的首批“健康医疗大数据”4个国家试点城市之一。“但现有中心化区域卫生信息平台,在开发成本、响应速度方面都不能很好满足点对点的互联互通需求。”常州市天宁区卫计局副局长张科说。

以常州天宁区郑陆镇卫生院为例,这家社区医院面向郑陆镇14万人口提供基层医疗服务。院长张志宏表示,之前天宁区没有区域卫生信息平台,每家医疗机构的庞大信息都要分散传送到市医疗机构信息平台。但各医疗机构之间并不互通,很多业务诉求无法实现。同时,如何保证个人隐私安全,也是现有平台的难题。

引入区块链技术后,常州的情况大为改观。以分级诊疗就医体验为例:居民就近到卫生院体检,通过区块链上的体检报告分析,筛查出心脑血管慢病高危患者。其中,约5%需转诊的患者可由社区医生通过区块链实现病历向上级医院的授权和流转;上级医院被授权后,可迅速了解病人病史和体检信息,病人无需做二次基础检查,享受医联体内各级医生的“管家式”全程医疗服务,实现早发现早诊疗的“治未病”。

“阿里健康区块链技术利用我们旧有的IT设备和系统将信息串联在一起,接入成本低,安全性却更高,这帮助卫生院和区医院间从‘信息孤岛’到互联互通,老百姓也能享受便利。”张志宏说。

据介绍,区块链是一种分布式数据库的底层技术架构,采用密码学和共识算法等技术,确保了接入区块链网络的各节点在数据流通中的公平、互通和隐私保护。此外,常州区块链项目还被设置了多道数据的安全屏障:区块链内的数据存储、流转环节都是密文存储和密文传输,即便被截取或者盗取也无法解密;为常州医联体专门设计的数字资产协议和数据分级体系,明确约定了上下级医院和政府管理部门的访问和操作权限;并且,审计单位利用区块链防篡改、可追溯的技术特性,可以精准定位医疗敏感数据的全程流转情况,比如在什么时间点,被哪个医疗机构授权给了谁。

“我们看到了区块链技术大规模应用的优势,随着后续接入机构增多,会形成一张快速部署的信息网络,实现业务数据真正的互联互通。并且,数据密文流转授权、全程可追溯、可审计的特点,也增强了管理部门的信心。”张科说。

2016年国务院印发了《“十三五”国家信息化规划》,日益普及的区块链技术被首次列入其中,其为医疗领域带来的革新显而易见:既保护患者隐私,又可让医疗健康数据以更为安全、快捷的方式全网共享。

对于区块链医疗应用的未来,阿里健康智慧医疗区块链项目负责人张文娟表示,“阿里健康希望建立一个尽可能连接更多医疗卫生机构的区块链网络,实现医疗场景有价值信息的安全、便捷、可控流动”。

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