Consider a healthcare facility with independent software systems for each department. A system engineer is tasked with developing a message exchange system between the departments based on the HL7 Version 2 standards. She begins by describing the interfaces and content exchanged between departments based on SysML interface blocks. The flow properties of these interface blocks are typed by HL7 message types as well as a direction. Next, a SysML internal block diagrams (IBD) of the system is developed. Proxy ports on the parts and the item flows between the ports are used to represent the HL7-based communication between the software systems of the departments, as illustrated in the top figure.

healthcare facility clinical data ibd

IBD (partial) of electronic information system connecting healthcare facility departments, selected connectors with their item flows highlighted

While developing and testing the message exchange system, the system engineer will need to keep track of issues and problems that arise. JIRA is an online tool widely used for this purpose.  The system engineer can view and track issues by message type, using Syndeia™ to create reference connections between the SysML model (left side of lower figure) and issues in the JIRA project (right side).

Creating a reference link between SysML and JIRA using Syndeia

Creating a reference link between SysML and JIRA using Syndeia

The whitepaper and the sample SysML model, covering all 5 parts of this blog series, is now available for download as below.  Learn more about how Model-Based Engineering can impact the biomedical and healthcare domains. Email us for any questions.


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Dirk Zwemer

Dr. Dirk Zwemer ( is President of InterCAX LLC, Atlanta, GA and holds OCSMP certification as Model Builder - Advanced.