Case Studies
Alarm Subsystem Compliance for Infusion Systems
Key Results
- 200 Alarm Behaviors Documented
- Alarm Logic Fully Tested
- Recertification Package Prepared
About the project
A global medical device manufacturer engaged PerformaCode to bring its alarm subsystem into compliance with IEC 60601-1-8 requirements. The subsystem was part of a complex infusion platform containing hundreds of safety-critical alarms, each with distinct priority, timing, and state-transition rules that directly affect patient safety.
The client lacked sufficient in-house capacity to formalize, verify, and document alarm behavior at the scale required for recertification. PerformaCode was responsible for defining alarm behavior patterns, validating implementation against standard requirements, and producing the complete compliance evidence set. The work was performed in close collaboration with the client’s engineering and quality teams to ensure alignment with internal templates, review processes, and future change control needs.
7
months
4
engineers
T&M
delivery model
Client challenges
The alarm subsystem contained several hundred alarms with complex priority rules, timing constraints, and state dependencies. While the implementation had evolved over time, alarm behavior was not fully formalized in a way that mapped cleanly to IEC 60601-1-8 requirements. This created risk during recertification, as inconsistencies between expected behavior, implemented logic, and available documentation were difficult to detect and prove compliant.
At the same time, the client lacked sufficient in-house resources to analyze, specify, test, and document alarm behavior at this scale without slowing down ongoing product development. Deliverables were not clearly defined at project start, and existing internal templates did not fully cover the depth of evidence required. The challenge was to establish a repeatable compliance approach that could satisfy auditors while allowing core engineering teams to remain focused on new features and platform evolution.
Tasks performed
- Analyzed alarm subsystem behavior against IEC 60601-1-8 alarm system requirements and safety clauses.
- Decomposed alarm logic into explicit state transitions, priority levels, timing delays, and latching conditions.
- Specified expected alarm behavior for normal, boundary, and fault scenarios.
- Developed a unified alarm behavior specification template aligned with audit and recertification needs.
- Documented behavior patterns for 200+ individual alarms using the standardized template.
- Designed black-box test scenarios validating externally observable alarm behavior and user-facing responses.
- Performed white-box verification of internal alarm logic, state handling, and timing paths.
- Implemented and executed manual and automated alarm verification tests.
- Validated alarm behavior against customer internal standards and acceptance criteria.
- Prepared traceable compliance documentation supporting regulatory review and recertification activities.
Project results
200 Alarm Behaviors Specified
Alarm conditions, priorities, signals, and state transitions were formally specified and traced to IEC 60601-1-8 requirements.
Black-Box/White-Box Validation
Behavioral validation combined runtime testing with source-level analysis to detect logic gaps, edge cases, and non-compliant conditions.
Compliance-Ready Documentation Set
A complete alarm specification and verification evidence package was delivered, aligned with internal quality templates and regulatory review expectations.
Value we bring
Full Lifecycle Engineering Mindset
PerformaCode engineers operate with a system-level understanding of the medical software lifecycle: from architecture and implementation to modular, integration, and system testing. This allows compliance, stability, and maintainability to be designed in from the start rather than addressed reactively.
Senior Engineers Who Reduce Management Overhead
PerformaCode provides senior-level engineers capable of owning complex embedded and firmware work with minimal supervision. Teams reliably drive tasks to completion while keeping stakeholders informed about progress, risks, and timelines, reducing coordination burden on internal teams.
Seamless Integration Into Client Processes
PerformaCode adapts to the customer’s existing processes, standards, and tools rather than forcing its own. This makes collaboration predictable and low-friction, especially in long-term engagements with distributed teams.
Technologies
- C++
- Linux
- GCC/Clang
- CMake
- GoogleTest
- Python
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