Introduction
Copley Scientific Limited, founded in 1946, specializes in manufacturing inhaler test equipment. The company emphasizes high-quality pharmaceutical testing equipment, expert training, and lifetime support, adhering to Quality by Design (QbD) principles and ISO 9001:2015 certification.
Inhaled Drug Products
Orally inhaled and nasal drug products (OINDPs) include metered-dose inhalers (MDIs), dry powder inhalers (DPIs), nebulisers, and nasal sprays. These devices offer rapid action and fewer side effects for local and systemic therapy via the lungs or nasal mucosa.
Types of Inhalers- Metered-Dose Inhalers (MDIs): Use a propellant for aerosol delivery, requiring coordination.
- Dry Powder Inhalers (DPIs): Deliver medication in powder form, relying on inhalation strength.
- Aqueous Droplet Inhalers: Propellant-free, delivering a soft mist.
- Nebulisers: Aerosolize liquid formulations, requiring minimal coordination.
- Nasal Sprays: Used for systemic drug delivery in liquid or powder forms.
Regulatory and Standards
Products comply with global pharmacopoeias and regulatory standards, ensuring data integrity and product reliability. Key regulatory bodies include the EMA and FDA.
Testing and Equipment
Copley offers testing equipment for inhalers, including Delivered Dose Uniformity (DDU) and Aerodynamic Particle Size Distribution (APSD) tools, along with impactors for detailed performance analysis.
Automation and Qualification
Automation tools enhance testing efficiency, and qualification services ensure equipment accuracy and compliance with pharmacopoeial criteria.
Conclusion
Copley Scientific Limited is committed to advancing inhaler testing technology, providing reliable solutions to meet pharmaceutical industry needs.
Overview of Inhalation Devices
1. Metered-Dose Inhalers (MDIs): Require coordination, with add-ons like spacers to aid usability.
2. Dry Powder Inhalers (DPIs): Deliver medication in dry powder form, relying on patient inhalation.
3. Aqueous Droplet Inhalers: Propellant-free, offering precise dosing.
4. Nebulisers: Convert liquid into aerosol droplets, categorized into Jet, Ultrasonic, and Mesh types.
5. Nasal Delivery Systems: Used for local and systemic drug delivery, with novel devices improving delivery methods.
Regulatory Framework
The FDA manages regulation through CDER and CDRH, providing guidelines for MDIs and DPIs. International harmonization efforts include ICH guidelines supporting a new Pharmaceutical Quality System (PQS).
Pharmacopoeias
Pharmacopoeias define medicine standards, with the European Pharmacopoeia and USP providing guidelines for inhalation products.
Device Safety and Standards
ISO sets standards for medical devices, including inhalers and nebulisers.
Inhaler Testing and Challenges
Challenges include changes in drug delivery devices and regulatory requirements, with critical quality attributes like delivered dose and particle size distribution being crucial.
Specifications and Procedures
The document outlines procedures for delivered dose testing of inhalers, emphasizing the importance of consistent drug emission and adherence to pharmacopoeial standards.
USP Recommendations
The USP specifies air volume sampling limits and the use of Breath Actuation Controllers for testing.
Ancillaries Required
Testing systems require components like Mouthpiece Adapters, Vacuum Pumps, and Flow Meters.
DPI Testing
Involves sampling at specific flow rates, with critical flow controllers ensuring accurate conditions.
Waste Shot Collector
Captures aerosol emissions from inhalers, integrating with the DUSA system.
Nebuliser Testing
Effectiveness depends on drug delivery rate and particle size, with guidelines provided by the EMA and pharmacopoeias.
Inhaler Testing Procedures
Describes testing nebulisers and inhalers using breathing simulators, with procedures for generating specific breathing patterns and collecting active drug on filters.
Facemask-Based Testing
Facemask testing assesses drug delivery in infants and small children, using standardized methods.
Spacer and VHC Testing
Simulates patient tidal breathing to determine drug delivery efficiency.
Representative Tidal Breathing Patterns
Provides patterns for different age groups to ensure accurate simulation during testing.
Device Securing Fixture
Holds spacers/VHCs and facemasks in place during testing, with adjustable features.
Face Model Support
Supports different age models with replaceable face skins for testing.
Delivered Dose Uniformity and Aerodynamic Particle Size
APSD is a critical quality attribute, with cascade impactors measuring particle size distribution.
Impactor Systems
Include components like mouthpiece adapters and vacuum pumps, separating particles into size bands.
Principles of Operation
Cascade impactors operate on inertial impaction, with stages collecting particles based on aerodynamic diameter.
Choosing an Impactor or Impinger
Selection depends on product requirements and geographical location, with the ACI being widely used.
Andersen Cascade Impactor (ACI)
An 8-stage impactor for measuring APSD, complying with USP and Ph.Eur. standards.
Next Generation Impactor (NGI)
A high-performance impactor with seven stages, designed for flexibility and productivity.
Multi-Stage Liquid Impinger (MSLI)
A 4-stage impactor for inhaler testing, reducing re-entrainment issues.
Quality and Certification
ACIs are subject to rigorous quality control, ensuring compliance with standards.
Specifications
The NGI meets Ph.Eur. and USP specifications, with a particle size range of 0.24 – 11.7 microns.
Design and Features
The NGI is user-friendly, electrically conductive, and designed for easy automation.
Operation Procedure
Involves setting up the NGI, performing a leak test, and collecting samples for analysis.
Ancillaries and AccessoriesInclude components like mouthpiece adapters and data
analysis software for a fully operational test system.
Testing with Spacers and VHCs
Outlines tests for APSD of these devices, including optimal and worst-case conditions.
Facemask and Spacer/VHC Testing
Highlights the importance of facemask performance and recommends using a Facemask Test Apparatus for realistic APSD measurements.
Nasal Delivery Systems
Categorizes nasal technologies and stresses the importance of quantifying fine particle doses.
Nebuliser Testing
Describes the use of the NGI Cooler to prevent evaporation during testing.
Abbreviated Impactor Measurement (AIM)
Discusses the FDA's PAT initiative and QbD principles, emphasizing APSD as a critical quality attribute.
Introduction to Cascade Impactors
Cascade impactors measure APSD, requiring skilled analysts to avoid errors.
Abbreviated Impactor Measurement (AIM)
Simplifies measurement by using fewer stages of the ACI, focusing on key metrics.
AIM in Quality Control (QC)
Speeds up testing and reduces errors by using a reduced number of impactor stages.
AIM in Research and Development (R&D)
Offers fast screening of new formulations, linking in vitro and in vivo performance.
Future of AIM
Expected to enhance formulation screening efficiency in early development phases.
Fast Screening Andersen (FSA)
A modified version of the ACI for AIM, matching product's MMAD for efficient testing.
Reduced Next Generation Impactor (rNGI)
An abbreviated method for using the NGI in AIM applications.
Fast Screening Impactor (FSI)
Designed for AIM-HRT applications, separating doses into Coarse and Fine Particle Mass.
Improved IVIVC Strategies
Proposes strategies to enhance IVIVC, including using anatomically accurate models and realistic breathing profiles.
Alberta Idealised Throat (AIT)
Offers a realistic representation of the human mouth and throat for testing.
Mixing Inlet
Allows decoupling of flow rates between the inhaler and impactor for accurate measurement.
Breathing Simulators
Replace constant flow rate conditions with realistic breathing profiles, improving IVIVCs.
Specifications and Models
Details three models of breathing simulators, each varying in volume capacity and waveform capabilities.
Ancillaries and Equipment
Include components like mouthpiece adapters and cascade impactors for a fully operational test system.
Testing Procedures
Outlines procedures for testing nebulisers and MDIs with spacers/VHCs according to standards.
Data Analysis
CITDAS software is used for processing cascade impactor data, offering a user-friendly interface.
Conclusion
Highlights the importance of breathing simulators in improving IVIVCs and the role of QbD in method development.
Specifications and Equipment
Outlines equipment for DPI testing, including Breathing Simulator Model BRS 3100 and Critical Flow Controllers.
Testing Procedures
Involves using a 2-way switching valve and vacuum pump to replicate inhalation cycles.
Flow Rate and Stability
Emphasizes the importance of stable flow rates for accurate DPI testing.
Critical Flow Controller Models
Incorporate features like differential pressure meters and flow control valves for managing test conditions.
Conclusion
Provides guidelines for DPI testing, emphasizing realistic patient conditions and stable flow rates.
Overview
Details the TPK 2100 and BAC 2100 systems for inhaler testing, focusing on specifications and procedures.
Specifications
The TPK 2100 ensures tests are conducted under sonic flow conditions, with data output capabilities.
Procedures
Guides users through test set-up procedures, supporting both inline and inlet flow meter methods.
Testing and Reporting
Provides detailed test reports, including environmental conditions and calibration data.
Flow Meters
Emphasizes the importance of accurate flow rates in testing inhalers.
Conclusion
The TPK 2100 and BAC 2100 systems offer precise control and comprehensive reporting for inhaler testing.
Flow Rate Measurement Procedure
Outlines the procedure for measuring flow rates in inhaler testing, specifying target flow accuracy.
Mouthpiece Adapters
Custom adapters ensure an airtight seal between the inhaler and test apparatus.
Vacuum Pumps
Describes Copley Low and High Capacity Pumps for inhaler testing, designed for easy integration.
Data Analysis Software
CITDAS Version 3.10 standardizes the analysis of aerodynamic size distribution of drug output from inhalers.
Key Features of CITDAS V3.10- Streamlined data input and customizable user setup.
- Automatic calibration data application and graphical representation of test results.
- Improved accuracy and expanded mass balance calculations.
Special Applications- Dissolution Testing: Focuses on drug delivery and lung deposition.
- Generic Drug Development: Reintroduction of test methods for generic OIPs.
- Cold Freon® Effect: Instruments to quantify aerosol spray force and plume temperature.
Dissolution Testing Equipment- NGI Dissolution Cup and Membrane Holder for size-fractionated particle testing.
Conclusion
Emphasizes the role of CITDAS V3.10 in enhancing inhaler testing data analysis accuracy and efficiency.
Specifications and Procedures
Discusses the use of ACI and NGI for drug testing, with simulated lung fluids mimicking lung conditions.
Simulated Lung Fluids (SLFs)
Five types of SLFs simulate different lung conditions and interactions.
FDA Guidance and Bioequivalence
Guidance for demonstrating bioequivalence for active ingredients, streamlining generic drug development.
Pharmacopoeia and Monographs
USP monographs specify equipment and methods for testing drugs like Fluticasone Propionate.
Inhaler Testing and Equipment
Details equipment required for testing inhalers, emphasizing standardized equipment use.
Spray Force and Plume Temperature Testing
Highlights the importance of testing spray force and plume temperature for therapeutic equivalence.
NGI Cup Coater Process
Describes the process for coating NGI cups, including dispensing, draining, and drying cycles.
Gentle Rocker
Facilitates sample recovery by dissolving active drugs in solvent with gentle agitation.
Sample Preparation Unit Model SPU 2000
Provides means of recovering active drugs from induction ports with variable speed control.
Impactor Cleaning System
Utilizes ultrasonic baths for cleaning, ensuring consistent procedures.
Key Parameters Influencing MDI Performance
Performance affected by parameters like shaking speed and firing force, requiring systematic investigation.
Vertus II System
A fully automated shake and fire system for precise MDI testing.
Vertus Plus System
Incorporates an integrated weighing balance for automatic shot weight measurement.
DecaVertus II System
A high-throughput system for Dose Content Uniformity testing of MDIs.
Automated Nasal Spray Testing
Automates nasal spray testing, addressing variability issues.
Conclusion
Automated systems enhance inhaler testing efficiency and reliability, meeting regulatory requirements.
Specifications and Features
DecaVertus II supports LAN connectivity and includes accessories for MDIs.
IQ/OQ, Maintenance, and Support
Documentation and kits available for qualification and maintenance.
Automation - NGI Assistant
Automates sample recovery from NGI, reducing human error.
Inhaler Testing and Qualification
Emphasizes the importance of proper qualification and validation procedures.
Impactor Testing - Possible Sources of Error
Lists potential impactor-related issues and emphasizes addressing them for accurate results.
Qualification Documentation
Ensures inhaler testing system reliability through proper qualification.
Stage Mensuration
Measures nozzle diameters to ensure compliance with standards.
Cleaning
Regular cleaning prevents deposit accumulation affecting particle size distribution.
Data Interpretation
Uses Effective Diameter and In-Use Margin to assess impactor suitability.
Restoring Impactor Performance
Cleaning and pinning can restore performance if ED is too small.
Leak Testing
Regular leak testing ensures seal integrity.
Impactor Performance
Regular mensuration and cleaning are critical for maintaining performance.
Electrostatic Effects
Discusses challenges posed by static electricity in inhaler testing.
Qualification Services
Offers services like leak testing and Cut-Point Particle Calibration.
Design & Servicing
Provides design solutions and service contracts for maintenance and calibration.
Training
Offers tailored training packages for analysts and lab managers.
Support
Ensures customer support from purchase through to after-sales.