Polymer Reagent Cartridge Isolation for Long-Term Moisture Control
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Solution Overview
Problem
Existing reagent storage systems using glass vials and ampoules are expensive, prone to breakage, generate waste, and require complex handling, while failing to maintain reagent efficacy over long shelf times due to moisture penetration.
Innovation Solution
Reagent cartridges with polymer construction and isolation envelopes, including desiccants and seal membranes, minimize moisture ingress and facilitate organized storage and on-demand access, reducing waste and handling complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass vials and ampoules are used to store reagents, then reliable isolation from moisture and contaminants is achieved, but cost increases, breakage risk increases, and waste is generated
Solution Approach 1:
The patent changes the material parameter from glass to polymer (specifically cyclic olefin copolymer or COC), which maintains moisture barrier properties while reducing cost and breakage risk. The polymer material provides equivalent isolation reliability without the drawbacks of glass construction.
Solution Approach 2:
The patent employs a disposable polymer cartridge system that eliminates the need for expensive, reusable glass vials. The polymer cartridges are designed for single use, reducing sterilization and maintenance costs while maintaining reliable moisture isolation during their service life.
2Reliability
If glass vials and ampoules are used to store reagents, then reliable isolation from moisture and contaminants is achieved, but device complexity and handling difficulty increase
Solution Approach 1:
The patent combines multiple functions into a single integrated polymer cartridge: storage, moisture protection, and ready-to-use dispensing. The cartridge integrates the reagent container, seal, and dispensing mechanism into one unit, eliminating the need for separate glass vials, caps, and handling procedures.
Solution Approach 2:
The patent segments the reagent storage system into individual single-use cartridges, each containing a specific reagent. This segmentation allows for organized storage in magazines and simplifies handling by allowing operators to load only the needed cartridges rather than managing multiple glass vials.
3Reliability
If glass vials and ampoules are used to store reagents, then reliable isolation from moisture and contaminants is achieved, but reagent efficacy decreases over long shelf times due to moisture penetration
Solution Approach 1:
The patent uses composite construction with polymer materials specifically selected for their moisture barrier properties. The COC polymer combined with appropriate seal membranes creates a composite structure that provides superior long-term moisture protection compared to glass, maintaining reagent efficacy throughout extended shelf life.
Solution Approach 2:
The patent ensures continuous protection against moisture penetration throughout the entire shelf life of the reagent. The sealed polymer cartridge design maintains uninterrupted isolation from the environment, preventing moisture ingress that would otherwise degrade the reagent over time.
4Adaptability or versatility
If multiple reagents are stored in glass vials requiring manual handling and reconstitution, then access flexibility is maintained, but productivity decreases due to time-consuming manual operations
Solution Approach 1:
The patent prepares reagents in advance by sealing them in ready-to-use polymer cartridges with pre-installed seals and configurations. This preliminary preparation eliminates the need for manual reconstitution operations during testing, allowing operators to simply load and use the pre-prepared cartridges, thereby increasing productivity while maintaining access flexibility.
Solution Approach 2:
The polymer cartridge design enables self-service functionality where the cartridge itself contains all necessary components for proper reagent delivery. The integrated design allows the cartridge to automatically interface with the testing system without requiring manual manipulation or reconstitution steps, freeing operators to perform higher-value tasks.
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 solution ensures reliable long-term storage and easy access to reagents, minimizing waste and handling complexity while maintaining efficacy, suitable for various diagnostic tests.
Implementation Method 1
desiccant within the isolation cavities
Implementation Method 2
seal membranes (e.g., foil) to enclose the reagent well
Data Source
AI summary
A reagent cartridge includes a cartridge body configured to store a solid reagent, the cartridge body having a reagent well accessible through an access port. A seal plate is proximate the access port, the seal plate extends away from the access port to a seal plate edge remote from the access port. The reagent cartridge includes an isolation envelope surrounding the reagent well. The isolation envelope includes a seal membrane covering the access port, at least one isolation wall, and at least one isolation cavity interposed between the isolation wall and the well sidewall. One or more reagent cartridges are received in a cartridge magazine. The cartridge magazine includes at least one complementary profile seat configured to receive the one or more reagent cartridges having a corresponding cartridge profile.