Quality System Inspection Technique (QSIT)
Table of Contents
Introduction
The Quality System Inspection Technique (QSIT) is a systematic approach used by the U.S. Food and Drug Administration (FDA) to inspect medical device manufacturers. QSIT ensures compliance with the Quality System Regulation (QSR) outlined in 21 CFR Part 820, which governs Current Good Manufacturing Practices (CGMP) for medical devices.
Definitions and Concepts
QSIT: A structured FDA inspection methodology for evaluating a medical device firm’s quality system.
Quality System Regulation (QSR): Regulations that define the requirements for quality management systems in the medical device industry.
21 CFR Part 820: The section of the Code of Federal Regulations that outlines CGMP requirements for medical devices in the U.S.
FDA Inspectional Approach: A risk-based strategy for evaluating compliance with quality and safety regulations.
Importance
QSIT is crucial to ensuring that medical device companies comply with regulatory requirements. Proper adherence to QSIT guidelines helps manufacturers maintain product quality, patient safety, and regulatory approval. A well-implemented QSIT process:
- Reduces the risk of FDA warning letters, fines, or product recalls.
- Ensures continuous compliance with evolving FDA regulations.
- Enhances quality management system (QMS) effectiveness and reliability.
- Promotes international regulatory alignment, as QSIT principles align with ISO 13485 standards.
Principles or Methods
The QSIT process divides inspections into four key subsystems:
- Corrective and Preventive Actions (CAPA): Inspection focuses on identifying, addressing, and preventing potential systemic issues.
- Design Controls: Evaluates whether companies follow appropriate procedures for device design, verification, and validation.
- Production and Process Controls (P&PC): Ensures compliance with manufacturing processes, personnel training, and process validation.
- Management Controls: Assesses whether company leadership is effectively overseeing and managing the QMS.
QSIT follows a “top-down” approach, meaning inspections begin at the management level and proceed deeper into the quality system, assessing high-risk processes first.
Application
QSIT inspections apply primarily to medical device manufacturers but can also influence pharmaceutical and biotech organizations with overlapping regulatory requirements. Typical applications include:
- Routine FDA Inspections: Conducted to verify ongoing compliance with QSR requirements.
- Pre-Approval Inspections (PAI): Ensuring compliance before approving new medical devices.
- Follow-up Inspections: Addressing prior non-compliance issues or after receiving FDA warning letters.
- Internal Audits: Manufacturers use QSIT principles to prepare for FDA inspections and proactively assess compliance.