In this paper, through in-depth study on characteristics of hospital information system (HIS) construction and requirements of medical data integration, and combined with the medical data straits of heterogeneity, multi-source, complexity, dynamic growth, etc., the problem of information exchange in different systems was aimed to solved, in order to realize medical data sharing among internal systems in hospital.Based on Extensible Markup Language (XML), public data model was described by XML Schema technology. Global and local medical data were queried using XQuery technology. The results showed that a medical data integration platform based on HL7 standard and the middleware technologies were proposed. It was concluded that the platform shielded the heterogeneity of underlying medical data by middleware technology. It finally realized the global query and transparent access of medical data in HIS for users.%目的:本文通过深入分析医院信息系统建设的特点和医疗数据集成的需求,结合医疗数据的异构多源、庞大复杂、动态增长等特点,旨在解决医院各个系统之间的信息互通,实现医院内部系统之间的数据共享.方法:该集成平台以XML技术为基础,采用XML Schema技术来描述集成平台的公共数据模型;利用统一查询语言XQuery进行全局和局部医疗数据查询.结果:提出了一种以HL7标准为基础的基于中间件技术的医疗数据集成平台架构.结论:该平台利用中间件屏蔽底层医疗数据的异构性,最终实现用户对全院医疗数据的全局查询和透明访问.
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