Medical Device Leak Testing

Overview: Medical Device Leak Testing
Clients: Leading Global Medical and Pharmaceutical Companies
Applications: Diagnostic Devices, Surgical Instruments, Drug Delivery Systems, Sterile Packaging
Test Methods: Air Decay, Vacuum Decay, Helium/Hydrogen Tracer Gas, High Vacuum Evaporation
Configurations: Series 20 Drawer Fixtures, High-Speed Multi-Station Systems, Clean Room Equipment
Compliance: FDA, ISO 13485, GAMP 5 Validation

Medical Device Leak Testing Expertise

TQC has supplied leak testing solutions across the medical and pharmaceutical sectors for devices where integrity verification is critical to patient safety and regulatory compliance. Our systems range from benchtop drawer fixtures for delicate devices to fully automated multi-station lines for high-volume production.

Medical device leak testing prevents:

• Sterility breaches (contamination entering sealed devices)
• Drug degradation (oxygen/moisture ingress in sealed packaging)
• Dosing failures (pressure loss in drug delivery systems)
• Fluid leakage (wound dressings, surgical drains, catheters)
• Patient safety incidents (implant failures, diagnostic errors)

Medical Devices Leak Tested

TQC has provided leak testing solutions for diverse medical applications:

Diagnostic Devices: Laboratory-on-a-chip cassettes, microfluidic cartridges, clinical test devices, blood analysis systems

Drug Delivery: Pre-filled syringes, auto-injectors, infusion pump cassettes, transdermal patches, inhalers

Surgical & Clinical: Tracheal tubes, wound dressings, surgical drains, catheters, endoscopic instruments

Implants & Consumables: Sealed medical implants, contact lens packaging, medical filters, showerheads (sterile water delivery)

Sterile Packaging: Medical device pouches, pharmaceutical vials, blister packs, sealed trays

Confidential Projects: Flexible products, liquid-filled devices, solid-filled products, proprietary medical technologies

Test Methods – Medical Device Leak Testing

TQC applies appropriate test methodologies based on device sensitivity, production volume, and leak rate requirements:

Air Decay (Positive Pressure): Standard method for sealed devices. Pressurises part, monitors pressure decay. Detects leaks >10⁻³ mbar·l/s. Suitable for most medical packaging and sealed assemblies.

Vacuum Decay (Negative Pressure): Part evacuated, pressure rise monitored. Detects leaks through atmospheric ingress. Prevents device damage from internal pressurisation. Ideal for flexible packaging and fragile devices.

Dosing Leak Test: Measures air volume entering evacuated part. Higher sensitivity than standard vacuum decay. Detects minute leaks in sterile packaging.

Helium Tracer Gas: Part filled with helium, mass spectrometer detects escaping gas. Sensitivity 10⁻⁶ to 10⁻¹⁰ mbar·l/s. Used for critical implants and microfluidic devices requiring ultra-sensitive detection.

Hydrogen Tracer Gas: 5% H₂/95% N₂ mixture (below explosive limit). Cost-effective for large-volume devices. Portable sniffer detectors survey part surface.

High Vacuum Evaporation: Sealed liquid-filled devices (contact lenses, drug vials) evacuated. Liquid evaporation through leaks detected as pressure rise. Verifies seal integrity without opening package.

Standard Series 20 Drawer Fixtures

The Series 20 platform provides cost-effective testing for delicate medical devices:

Configuration: Benchtop drawer fixture with manual load/unload. Operator places device in drawer nest, closes drawer, automatic test executes. Pass/fail indication, drawer opens for unload. Cycle time 30-90 seconds typical.

Benefits: Gentle handling of fragile devices (flexible tubing, thin films, soft packaging). Operator controls each device individually. Multiple fixtures operated by single operator. Clean room compatible (stainless construction, sealed electronics).

Applications: Wound dressings, contact lens packages, medical filters, implants, diagnostic cassettes, surgical device packaging.

High-Speed Automated Systems – Medical Device Leak Testing

For production volumes requiring throughput >100 parts/hour, TQC supplies automated solutions:

Automatic Vial Leak Testing: Bulk-fed plastic pharmaceutical vials. Vision inspection verifies cap presence. Multi-position air decay testing (6-12 vials simultaneously). Automatic unload segregating passed/failed. Throughput 300-600 vials/hour.

Tracheal Tube System: Recirculating pallet conveyor with manual load. Gross leak pre-screening (air decay). Fine leak detection (helium mass spectrometry in chamber). Automatic unload with pass/fail segregation. Throughput 800 tubes/hour. View full case study

Laboratory-on-a-Chip Fixture: Dual drawer configuration testing 2 cassettes simultaneously. Complex 16-point multi-zone sealing. Six sequential tests per cassette (12 total). Automatic pressure switching (0.5-0.9 bar overpressure, 0.5 bar vacuum). Fail-lock preventing removal of defective devices. View full case study

Specialised Solutions

Interchangeable Tooling for Medical Filters: Multi-size capability with quick-change fixtures. Accommodates filter diameter range without machine reconfiguration. Operator selects size, system adjusts test parameters automatically.

Showerhead Ultrasonic Weld Verification: Tests weld integrity preventing contaminated water delivery. Detects incomplete fusion, weld porosity, cracked seams. Ensures sterile water delivery in clinical applications.

Medical Implant Sealed Components: Ultra-sensitive testing for hermetically sealed devices. Helium mass spectrometry detecting leaks <10⁻⁹ mbar·l/s. Prevents moisture ingress compromising implant electronics or drug reservoirs.

Contact Lens Package Integrity: High vacuum evaporation method. Sealed blister packs evacuated, saline evaporation through seal defects monitored. Non-destructive testing verifying sterile packaging without opening.

Clean Room Compatibility

Medical device manufacturing often requires clean room environments. TQC designs equipment for clean room deployment:

• Stainless steel construction (easy cleaning, no corrosion)
• Sealed electronics enclosures (prevent particle generation)
• Smooth surfaces (minimise particle traps)
• HEPA filtration integration (exhaust air filtered)
• Minimal material shedding (low-wear components)
• Validation documentation (IQ/OQ/PQ protocols)

Regulatory Compliance

Medical device leak testing supports regulatory requirements:

FDA 21 CFR Part 820: Quality system regulations requiring process validation and documented testing procedures.

ISO 13485: Medical device quality management standard mandating risk-based testing and traceability.

GAMP 5: Good Automated Manufacturing Practice for pharmaceutical/medical device equipment validation. TQC provides complete documentation packages (URS, FS, DS, FAT, SAT, IQ/OQ/PQ).

Test Data Logging: Systems record test pressure, decay rates, pass/fail results, timestamps, operator IDs. Data integrates with manufacturing execution systems (MES) for batch traceability and regulatory audit trails.

Related Capabilities

TQC‘s medical device leak testing expertise includes:

• Series 20 drawer fixture platform
• Multi-zone sealing for complex devices
• MALT controller integration
• Helium/hydrogen tracer gas systems
• High vacuum evaporation methods
• Automated material handling
• Clean room compatible design
• GAMP 5 validation documentation
• Test volume minimisation for sensitivity
• Fail-lock quality enforcement

If you need medical device leak testing solutions, contact TQC to discuss your requirements.