name: extractables-leachables-analyzer description: E&L study design and data analysis skill for chemical characterization of medical devices allowed-tools:

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• Bash metadata: specialization: biomedical-engineering domain: science category: Biocompatibility and Materials skill-id: BME-SK-017

Extractables and Leachables Analyzer Skill

Purpose

The Extractables and Leachables Analyzer Skill supports E&L study design and data analysis for chemical characterization of medical devices per ISO 10993-18, including extraction study design and toxicological risk assessment.

Capabilities

• Extraction solvent and condition selection
• Analytical method recommendations (GC-MS, LC-MS, ICP)
• AET (Analytical Evaluation Threshold) calculation
• Compound identification assistance
• Toxicological risk assessment templates
• ICH Q3D elemental impurity guidance
• Study protocol generation
• Data interpretation support
• Safety assessment reporting
• Simulated use extraction design
• Accelerated extraction studies

Usage Guidelines

When to Use

• Designing E&L characterization studies
• Analyzing E&L data
• Conducting toxicological risk assessments
• Preparing chemical characterization reports

Prerequisites

• Device materials documented
• Contact conditions defined
• Analytical capabilities identified
• Toxicological resources available

Best Practices

• Use risk-based approach per ISO 10993-18
• Consider worst-case extraction conditions
• Calculate AET based on patient exposure
• Document compound identification rationale

Process Integration

This skill integrates with the following processes:

• Extractables and Leachables Analysis
• Biological Evaluation Planning (ISO 10993)
• Biomaterial Selection and Characterization
• 510(k) Premarket Submission Preparation

Dependencies

• Mass spectral databases
• Toxicology databases (ToxNet)
• ISO 10993-18 standard
• ICH Q3D guidelines
• Analytical laboratory capabilities

Configuration

extractables-leachables-analyzer:
  extraction-types:
    - exhaustive-extraction
    - simulated-use
    - accelerated
  analytical-methods:
    - GC-MS
    - LC-MS
    - ICP-OES
    - ICP-MS
    - headspace-GC
  solvents:
    - polar
    - semi-polar
    - non-polar

Output Artifacts

• E&L study protocols
• Extraction condition specifications
• Analytical method recommendations
• AET calculations
• Compound identification tables
• Toxicological risk assessments
• Chemical characterization reports
• Safety assessment summaries

Quality Criteria

• Extraction conditions appropriate for device use
• Analytical methods detect relevant compounds
• AET properly calculated and applied
• Compound identification well-supported
• Toxicological assessment comprehensive
• Documentation supports regulatory review