Risk Management Specialist#

ISO 14971:2019 risk management implementation throughout the medical device lifecycle.

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Table of Contents#

• Risk Management Planning Workflow
• Risk Analysis Workflow
• Risk Evaluation Workflow
• Risk Control Workflow
• Post-Production Risk Management
• Risk Assessment Templates
• Decision Frameworks
• Tools and References

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Risk Management Planning Workflow#

Establish risk management process per ISO 14971.

Workflow: Create Risk Management Plan#

1. Define scope of risk management activities:
   • Medical device identification
   • Lifecycle stages covered
   • Applicable standards and regulations
2. Establish risk acceptability criteria:
   • Define probability categories (P1-P5)
   • Define severity categories (S1-S5)
   • Create risk matrix with acceptance thresholds
3. Assign responsibilities:
   • Risk management lead
   • Subject matter experts
   • Approval authorities
4. Define verification activities:
   • Methods for control verification
   • Acceptance criteria
5. Plan production and post-production activities:
   • Information sources
   • Review triggers
   • Update procedures
6. Obtain plan approval
7. Establish risk management file
8. Validation: Plan approved; acceptability criteria defined; responsibilities assigned; file established

Risk Management Plan Content#

SectionContentEvidenceScopeDevice and lifecycle coverageScope statementCriteriaRisk acceptability matrixRisk matrix documentResponsibilitiesRoles and authoritiesRACI chartVerificationMethods and acceptanceVerification planProduction/Post-ProductionMonitoring activitiesSurveillance plan

Risk Acceptability Matrix (5x5)#

Probability \ SeverityNegligibleMinorSeriousCriticalCatastrophic**Frequent (P5)MediumHighHighUnacceptableUnacceptableProbable (P4)MediumMediumHighHighUnacceptableOccasional (P3)LowMediumMediumHighHighRemote (P2)LowLowMediumMediumHighImprobable (P1)**LowLowLowMediumMedium

Risk Level Actions#

LevelAcceptableAction RequiredLowYesDocument and acceptMediumALARPReduce if practicable; document rationaleHighALARPReduction required; demonstrate ALARPUnacceptableNoDesign change mandatory

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Risk Analysis Workflow#

Identify hazards and estimate risks systematically.

Workflow: Conduct Risk Analysis#

1. Define intended use and reasonably foreseeable misuse:
   • Medical indication
   • Patient population
   • User population
   • Use environment
2. Select analysis method(s):
   • FMEA for component/function analysis
   • FTA for system-level analysis
   • HAZOP for process deviations
   • Use Error Analysis for user interaction
3. Identify hazards by category:
   • Energy hazards (electrical, mechanical, thermal)
   • Biological hazards (bioburden, biocompatibility)
   • Chemical hazards (residues, leachables)
   • Operational hazards (software, use errors)
4. Determine hazardous situations:
   • Sequence of events
   • Foreseeable misuse scenarios
   • Single fault conditions
5. Estimate probability of harm (P1-P5)
6. Estimate severity of harm (S1-S5)
7. Document in hazard analysis worksheet
8. Validation: All hazard categories addressed; all hazards documented; probability and severity assigned

Hazard Categories Checklist#

CategoryExamplesAnalyzedElectricalShock, burns, interference☐MechanicalCrushing, cutting, entrapment☐ThermalBurns, tissue damage☐RadiationIonizing, non-ionizing☐BiologicalInfection, biocompatibility☐ChemicalToxicity, irritation☐SoftwareIncorrect output, timing☐Use ErrorMisuse, perception, cognition☐EnvironmentEMC, mechanical stress☐

Analysis Method Selection#

SituationRecommended MethodComponent failuresFMEASystem-level failureFTAProcess deviationsHAZOPUser interactionUse Error AnalysisSoftware behaviorSoftware FMEAEarly design phasePHA

Probability Criteria#

LevelNameDescriptionFrequencyP5FrequentExpected to occur>10⁻³P4ProbableLikely to occur10⁻³ to 10⁻⁴P3OccasionalMay occur10⁻⁴ to 10⁻⁵P2RemoteUnlikely10⁻⁵ to 10⁻⁶P1ImprobableVery unlikely<10⁻⁶

Severity Criteria#

LevelNameDescriptionHarmS5CatastrophicDeathDeathS4CriticalPermanent impairmentIrreversible injuryS3SeriousInjury requiring interventionReversible injuryS2MinorTemporary discomfortNo treatment neededS1NegligibleInconvenienceNo injury

See: references/risk-analysis-methods.md

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Risk Evaluation Workflow#

Evaluate risks against acceptability criteria.

Workflow: Evaluate Identified Risks#

1. Calculate initial risk level from probability × severity
2. Compare to risk acceptability criteria
3. For each risk, determine:
   • Acceptable: Document and accept
   • ALARP: Proceed to risk control
   • Unacceptable: Mandatory risk control
4. Document evaluation rationale
5. Identify risks requiring benefit-risk analysis
6. Complete benefit-risk analysis if applicable
7. Compile risk evaluation summary
8. Validation: All risks evaluated; acceptability determined; rationale documented

Risk Evaluation Decision Tree#

text

Risk Estimated
      │
      ▼
Apply Acceptability Criteria
      │
      ├── Low Risk ──────────► Accept and document
      │
      ├── Medium Risk ───────► Consider risk reduction
      │   │                    Document ALARP if not reduced
      │   ▼
      │   Practicable to reduce?
      │   │
      │   Yes──► Implement control
      │   No───► Document ALARP rationale
      │
      ├── High Risk ─────────► Risk reduction required
      │   │                    Must demonstrate ALARP
      │   ▼
      │   Implement control
      │   Verify residual risk
      │
      └── Unacceptable ──────► Design change mandatory
                               Cannot proceed without control

ALARP Demonstration Requirements#

CriterionEvidence RequiredTechnical feasibilityAnalysis of alternative controlsProportionalityCost-benefit of further reductionState of the artComparison to similar devicesStakeholder inputClinical/user perspectives

Benefit-Risk Analysis Triggers#

SituationBenefit-Risk RequiredResidual risk remains highYesNo feasible risk reductionYesNovel deviceYesUnacceptable risk with clinical benefitYesAll risks lowNo

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Risk Control Workflow#

Implement and verify risk control measures.

Workflow: Implement Risk Controls#

1. Identify risk control options:
   • Inherent safety by design (Priority 1)
   • Protective measures in device (Priority 2)
   • Information for safety (Priority 3)
2. Select optimal control following hierarchy
3. Analyze control for new hazards introduced
4. Document control in design requirements
5. Implement control in design
6. Develop verification protocol
7. Execute verification and document results
8. Evaluate residual risk with control in place
9. Validation: Control implemented; verification passed; residual risk acceptable; no unaddressed new hazards

Risk Control Hierarchy#

PriorityControl TypeExamplesEffectiveness1Inherent SafetyEliminate hazard, fail-safe designHighest2Protective MeasuresGuards, alarms, automatic shutdownHigh3InformationWarnings, training, IFULower

Risk Control Option Analysis Template#

text

RISK CONTROL OPTION ANALYSIS

Hazard ID: H-[XXX]
Hazard: [Description]
Initial Risk: P[X] × S[X] = [Level]

OPTIONS CONSIDERED:
| Option | Control Type | New Hazards | Feasibility | Selected |
|--------|--------------|-------------|-------------|----------|
| 1 | [Type] | [Yes/No] | [H/M/L] | [Yes/No] |
| 2 | [Type] | [Yes/No] | [H/M/L] | [Yes/No] |

SELECTED CONTROL: Option [X]
Rationale: [Justification for selection]

IMPLEMENTATION:
- Requirement: [REQ-XXX]
- Design Document: [Reference]

VERIFICATION:
- Method: [Test/Analysis/Review]
- Protocol: [Reference]
- Acceptance Criteria: [Criteria]

Risk Control Verification Methods#

MethodWhen to UseEvidenceTestQuantifiable performanceTest reportInspectionPhysical presenceInspection recordAnalysisDesign calculationAnalysis reportReviewDocumentation checkReview record

Residual Risk Evaluation#

After ControlActionAcceptableDocument, proceedALARP achievedDocument rationale, proceedStill unacceptableAdditional control or design changeNew hazard introducedAnalyze and control new hazard

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Post-Production Risk Management#

Monitor and update risk management throughout product lifecycle.

Workflow: Post-Production Risk Monitoring#

1. Identify information sources:
   • Customer complaints
   • Service reports
   • Vigilance/adverse events
   • Literature monitoring
   • Clinical studies
2. Establish collection procedures
3. Define review triggers:
   • New hazard identified
   • Increased frequency of known hazard
   • Serious incident
   • Regulatory feedback
4. Analyze incoming information for risk relevance
5. Update risk management file as needed
6. Communicate significant findings
7. Conduct periodic risk management review
8. Validation: Information sources monitored; file current; reviews completed per schedule

Information Sources#

SourceInformation TypeReview FrequencyComplaintsUse issues, failuresContinuousServiceField failures, repairsMonthlyVigilanceSerious incidentsImmediateLiteratureSimilar device issuesQuarterlyRegulatoryAuthority feedbackAs receivedClinicalPMCF dataPer plan

Risk Management File Update Triggers#

TriggerResponse TimeActionSerious incidentImmediateFull risk reviewNew hazard identified30 daysRisk analysis updateTrend increase60 daysTrend analysisDesign changeBefore implementationImpact assessmentStandards updatePer transition periodGap analysis

Periodic Review Requirements#

Review ElementFrequencyRisk management file completenessAnnualRisk control effectivenessAnnualPost-market information analysisQuarterlyRisk-benefit conclusionsAnnual or on new data

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Risk Assessment Templates#

→ See references/risk-assessment-templates.md for details

Decision Frameworks#

Risk Control Selection#

text

What is the risk level?
        │
        ├── Unacceptable ──► Can hazard be eliminated?
        │                    │
        │                Yes─┴─No
        │                 │     │
        │                 ▼     ▼
        │            Eliminate  Can protective
        │            hazard     measure reduce?
        │                           │
        │                       Yes─┴─No
        │                        │     │
        │                        ▼     ▼
        │                   Add       Add warning
        │                   protection + training
        │
        └── High/Medium ──► Apply hierarchy
                            starting at Level 1

New Hazard Analysis#

QuestionIf YesIf NoDoes control introduce new hazard?Analyze new hazardProceedIs new risk higher than original?Reject control optionAcceptable trade-offCan new hazard be controlled?Add controlReject control option

Risk Acceptability Decision#

ConditionDecisionAll risks LowAcceptableMedium risks with ALARPAcceptableHigh risks with ALARP documentedAcceptable if benefits outweighAny Unacceptable residualNot acceptable - redesign

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Tools and References#

Scripts#

ToolPurposeUsagerisk_matrix_calculator.pyCalculate risk levels and FMEA RPNpython risk_matrix_calculator.py --help

Risk Matrix Calculator Features:

• ISO 14971 5x5 risk matrix calculation
• FMEA RPN (Risk Priority Number) calculation
• Interactive mode for guided assessment
• Display risk criteria definitions
• JSON output for integration

References#

DocumentContentiso14971-implementation-guide.mdComplete ISO 14971:2019 implementation with templatesrisk-analysis-methods.mdFMEA, FTA, HAZOP, Use Error Analysis methods

Quick Reference: ISO 14971 Process#

StageKey ActivitiesOutputPlanningDefine scope, criteria, responsibilitiesRisk Management PlanAnalysisIdentify hazards, estimate riskHazard AnalysisEvaluationCompare to criteria, ALARP assessmentRisk EvaluationControlImplement hierarchy, verifyRisk Control RecordsResidualOverall assessment, benefit-riskRisk Management ReportProductionMonitor, review, updateUpdated RM File

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Related Skills#

SkillIntegration Pointquality-manager-qms-iso13485QMS integrationcapa-officerRisk-based CAPAregulatory-affairs-headRegulatory submissionsquality-documentation-managerRisk file management