HL7文档网际传输、处理方法的探讨及实现
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摘要
目的:现阶段,医疗信息的交换和共享成为一种迫切的需要。但国内暂无一套可遵循的标准,国际上承认的医疗环境电子信息交换标准——HL7 是一种很好的选择。但它与我国国情存在一定的差异,在应用时需对其进行本土化改造。同时现有绝大多数HIS都缺少网际信息交换和处理的能力。因此在不改变现有系统架构的前提下实现HL7文档的网际交换,有重要的现实意义。鉴于此,本研究对HL7文档网际传输和处理的方法进行了探讨。
     方法:本研究以检验信息作为研究的对象,设计了一个HL7文档网际传输处理演示系统。该系统通过对检验信息进行HL7设定和对应转换实现HL7本土化改造,以网关形式实现HL7文档的解析构建。系统采用Visual Basic作为编程语言,使用HTTP作为传输协议,利用SOAP实现远程过程调用。
     结论:经实际运行表明,以外挂网关形式在HIS系统中引入HL7是一种可行便捷的方法。本系统经测试可在网际间正常传输处理标准文本格式和XML格式的HL7文档,可以简易地实现医疗信息的网际交换,并实现了对检验信息的HL7本土化改造。将本研究应用到实际中,可满足现阶段医疗信息共享的需求,有很强的实用价值。
Objective: Nowadays, sharing and exchanging medical information be an insistent demand. Yet domestic have not a standard to follow. HL7, an accepted by international medical environment electronic information exchange standard, is a good choice. However, it also has some different with our situation that needs localization when it applied. In addition, most HIS is lacking of the ability to exchange and transact the medical message in Internet. The method that implement exchange of the HL7 documents where not change the frame of current system, has important practical sense. Whereas we have researched the method how to transmit and transact the HL7 documents.
    Methods: The research used the laboratory information as research object to design a demo of HL7 documents transmit and transact system. The system implements HL7 localization rebuilding includes HL7 setting, corresponding, and conversion of laboratory information. In addition, it parses and constructs HL7 documents through a gateway. We programmed the demo by Visual Basic; used HTTP as transmit protocol; applied SOAP to achieve remote procedure call.
    Conclusions: The run of system indicates that gateway mode is a doable and convenient technique to introduce HL7 to HIS. Test also show that system can transmit HL7 documents that encoded by standard encoding rules and XML encoding rules in network normally. It is easily to implement network exchange of medical information. In addition, the system achieves HL7 localization rebuilding of laboratory information. Applied this research into fact, can fulfill the need of medical information sharing today. So can say, the research has practicable value.
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