Multifunctional Coated Pharmaceutical Package Surface
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Solution Overview
Problem
Current pharmaceutical packaging fails to provide a combination of minimized protein loss, lubrication, and barrier properties, leading to protein adsorption and denaturation, especially for high-cost protein-based drugs, and existing solutions are either costly or generate concerns about protein-bound diseases.
Innovation Solution
A multifunctional pharmaceutical package is developed with a lubricious coating and a protein deterrent coating, such as hydrogel or polyether coatings, which can be applied sequentially over existing coatings like barrier or lubricious layers to minimize protein adsorption and enhance lubricity while maintaining stability and sterility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protein-based drugs are packaged in conventional pharmaceutical packaging materials (glass and polymers), then the packaging provides basic protection and storage functionality, but protein adsorption occurs leading to product loss and potential denaturation
Solution Approach 1:
A coating layer is introduced as an intermediary between the protein-based drug and the conventional packaging material. This coating acts as a mediator that prevents direct contact between the protein and the packaging surface, thereby eliminating protein adsorption while maintaining the basic packaging functionality. The coating is applied to the interior surface of the container and is compatible with both the protein drug and the underlying packaging material.
Solution Approach 2:
The packaging system is transformed from a simple single-material structure to a composite structure consisting of the conventional packaging material (glass or polymer) combined with a protective coating layer. This composite approach allows the system to benefit from both the mechanical strength and chemical inertness of the base material and the protein-compatible properties of the coating material.
2Loss of substance
If siliconization is applied to the packaging material to reduce protein adsorption, then protein loss is minimized, but the packaging material becomes less compatible with certain protein formulations and may introduce new issues
Solution Approach 1:
Instead of using a single fixed coating composition, the invention allows for adjustment of coating parameters including composition, thickness, and application method to optimize for specific protein formulations. The coating can be tailored to match the chemical properties of different proteins, enabling versatility across various drug products while maintaining low protein adsorption.
Solution Approach 2:
The coating properties are optimized locally at the interface where the protein contacts the packaging surface. The coating composition and characteristics are specifically designed to match the requirements of the protein formulation, creating a localized environment that is both protein-compatible and prevents adsorption, rather than applying a universal treatment that may not work for all formulations.
3Reliability
If excipients such as carbohydrates, buffers, and surfactants are added to the drug formulation to reduce protein adsorption, then protein stability is improved, but the formulation complexity increases and stability testing requirements expand
Solution Approach 1:
The invention extracts the protein adsorption prevention function from the bulk drug formulation and relocates it to the packaging interface through a dedicated coating layer. This separation allows the protein formulation to remain simple without requiring additional excipients for adsorption control, as the coating handles this function independently at the container wall interface.
Solution Approach 2:
The coating serves as an intermediary that assumes the role of preventing protein adsorption, thereby removing the need for additional excipients in the formulation. The coating mediates between the protein and the packaging material, providing the stability function without increasing formulation complexity.
4Loss of substance
If a coating is applied to the packaging surface to minimize protein adsorption, then protein loss is reduced, but the coating must meet multiple requirements including sterilizability, non-toxicity, and coating deposition verification
Solution Approach 1:
The coating is designed with specific parameters including thickness, composition, and application method that optimize both protein compatibility and manufacturability. The coating thickness is controlled to ensure adequate protection while maintaining sterility and verification capabilities. The application process is designed to be compatible with existing manufacturing workflows and sterilization methods.
Solution Approach 2:
The coating system is designed to be self-verifying through methods such as visual inspection, spectroscopy, or other detection techniques that confirm adequate coating deposition without requiring complex verification processes. The coating properties are selected to naturally provide the necessary functionality while enabling straightforward manufacturing and quality control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The coated packages reduce protein adsorption by over 75%, improve lubricity by more than 75%, and provide enhanced stability against leachables and gases, addressing the limitations of existing packaging solutions.
Implementation Method 1
The coating should also be sterically hindering to the proteins interaction with the pharmaceutical package
Implementation Method 2
a surface that is non-ionic, hydrophilic and hydrogen bond accepting is considered an ideal surface to repel protein adsorption
Implementation Method 3
a lubricious coating... which can be applied sequentially over existing coatings... to minimize protein adsorption and enhance lubricity
Implementation Method 4
provide enhanced stability against leachables and gases
Data Source
AI summary
The present invention relates to a multi-functional pharmaceutical package surface and a method of preparing a multi-functional pharmaceutical package surface. In particular, the present invention relates to a pharmaceutical package having a protein deterrent and lubricious surface and methods of preparing said surface by applying coatings directly to the pharmaceutical package that (a) reduce the adsorption of proteins onto pharmaceutical packaging while not affecting the activity of the protein solution and (b) provide a lubricious surface. The pharmaceutical package surface may also contain a barrier coating. Coatings can be deposited on a variety of pharmaceutical packaging materials and configurations by various methods.