Specimen Management, Infection Control, And ISO 13485 Implementation

https://www.mayoclinic.org/tests-procedures/breast-biopsy/about/pac-20384812

For healthcare institutions and device suppliers, the breast biopsy procedure is not merely a clinical task but a complex system involving high-risk consumable management, precision instrument maintenance, and stringent quality control (QC). Lapses can lead to misdiagnosis, nosocomial infections, or legal disputes.

1. "Gold Standard" Specimen Management Workflow

The specimen is the sole basis for pathological diagnosis; management must adhere to "unique identification and full traceability."

• Retrieval:​ Ensure tissue cores are fully ejected into collection chambers (disposables) or carefully retrieved (VAB systems) without loss.
• Verification:​ Implement "Three-Way Verification" (Clinician/Nurse/Pathology Receiving Staff). Confirm Patient Name, ID, Specimen Site (Left/Right Breast, Quadrant), and Specimen Type (Core Biopsy/VAB).
• Fixation & Transport:​ Immediately place specimens in sufficient​ (≥10x specimen volume) 10% Neutral Buffered Formalin. Fixation time: 6–48 hours (critical for nucleic acid/protein integrity). Neveruse saline or alcohol for temporary storage.
• Imaging:​ For VAB specimens, photographing the array of retrieved cores is recommended for record-keeping.

2. Infection Control Imperatives

As a percutaneous invasive procedure, infection control is paramount.

• Aseptic Technique:​ Strict skin antisepsis (Povidone-Iodine or Chlorhexidine), sterile drapes, sterile gloves.
• Single-Use Device Management:​ Strictly prohibitreusing disposable needles, kits, or gloves. Check package integrity and expiration dates.
• Reprocessing of Reusable Devices:​ Reusable biopsy guns/handles must comply with standards like WS 310.2-2016 (China) or AAMI ST79 (USA). Workflow: Pre-cleaning → Enzymatic washing → Rinsing → Final rinse → Lubrication → Drying → Inspection → Packaging → Sterilization (preferably Steam).
• Waste Management:​ Used biopsy needles are "Sharps Waste." Dispose immediately into puncture-resistant, leak-proof sharps containers for licensed hauling.

3. ISO 13485 and Medical Device Compliance

Manufacturers must operate under an ISO 13485:2016 (Medical Device Quality Management System).

• Raw Material Control:​ Stainless steel, titanium, and polymers require Biocompatibility Reports (ISO 10993) and Material Test Certificates (MTC).
• Process Validation:​ Sterilization cycles (EO or Gamma) require validation. Cleanrooms (typically ISO Class 8 or 7) require routine particulate and microbial monitoring.
• Risk Management:​ Conduct risk assessments per ISO 14971, identifying hazards (tip fracture, cutting failure, coating delamination) and implementing controls.

4. Adverse Event Monitoring

Facilities must establish Medical Device Reporting (MDR) systems. Suspected adverse events (needle breakage, severe allergic reactions, design flaws) require prompt completion of "Suspected Adverse Device Event Report" forms and submission to regulatory bodies.

Rigorous QC and compliance safeguard patients, enhance diagnostic accuracy, mitigate legal risks, and uphold institutional reputation.