Reagent Cartridge Isolation Envelopes for Moisture-Resistant Storage
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Solution Overview
Problem
Existing reagent storage systems using glass vials and ampoules are costly, prone to breakage, generate waste, and require complex manipulation for reconstitution, while not effectively isolating reagents from moisture and contaminants, especially for large quantities and frequent use.
Innovation Solution
Reagent cartridges with a polymer-based isolation envelope, featuring isolation walls, cavities, desiccants, and seal membranes to minimize moisture penetration, allowing for organized storage and easy access in magazines compatible with existing diagnostic tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glass vials and ampoules are used for reagent storage, then reliable isolation from moisture and contaminants is achieved, but cost increases, breakage risk increases, and waste generation increases
Solution Approach 1:
The patent employs disposable plastic cartridges with integrated seals and desiccants that are discarded after single use. This eliminates the need for expensive, fragile glass containers while ensuring reliable isolation through built-in protective features. The disposable nature prevents cross-contamination and eliminates cleaning requirements, directly addressing the waste and breakage issues while maintaining isolation reliability.
Solution Approach 2:
The cartridge construction combines multiple materials with complementary properties: plastic for the container body, foil for sealing membranes, desiccants for moisture absorption, and rubber stoppers for access control. This composite approach achieves reliable isolation equivalent to glass while using inexpensive, non-fragile materials that eliminate breakage risks and reduce waste.
2Duration of action of stationary object
If glass vials and ampoules are used for reagent storage, then reliable isolation for long shelf times is achieved, but cost increases and manipulation complexity increases
Solution Approach 1:
The patent combines multiple protective functions into a single integrated cartridge unit: the plastic container, foil seal, desiccant, and rubber stopper are all merged into one disposable unit. This eliminates the need for separate glass vial, cap, and seal components, reducing manipulation steps while maintaining long shelf life through the integrated isolation system.
Solution Approach 2:
The cartridge is pre-sealed with foil membranes and desiccants in place before use, with reagents prepared in advance in the correct containers. This preliminary preparation eliminates the need for complex assembly or sealing operations at the point of use, simplifying manipulation while ensuring long-term stability is already established.
3Reliability
If glass vials and ampoules are used for reagent storage, then reliable isolation is achieved, but cost increases
Solution Approach 1:
The patent replaces expensive glass manufacturing with inexpensive plastic injection molding for cartridge bodies and foil lamination for seals. These disposable components can be manufactured at low cost using high-volume plastic processing techniques, eliminating the high material and processing costs associated with glass while maintaining reliable isolation through the integrated seal and desiccant system.
Solution Approach 2:
The patent uses thin foil membranes and plastic shells instead of thick glass walls. These flexible, thin-material constructions are much cheaper to manufacture than glass while providing adequate barrier properties when combined with desiccants and proper sealing, directly reducing manufacturing costs while preserving isolation reliability.
4Reliability
If glass vials and ampoules are used for reagent storage, then reliable isolation is achieved, but breakage risk increases
Solution Approach 1:
The patent employs disposable plastic cartridges that are inherently shatterproof compared to glass. The plastic construction provides adequate mechanical strength for handling and storage while eliminating the breakage risk entirely. The disposable nature ensures that even if the plastic degrades over time, it simply replaces rather than risks contaminating the reagent through breakage.
Solution Approach 2:
The cartridge uses composite construction with plastic providing mechanical strength and impact resistance, while foil and desiccant layers provide the moisture barrier. This material combination achieves the isolation reliability of glass without its fragility, as the plastic-foil composite is much more mechanically robust while maintaining equivalent protective properties.
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 provides reliable long-term storage and easy access to reagents, minimizing waste and reconstitution errors, while ensuring reagent efficacy and compatibility with existing lab equipment.
Implementation Method 1
desiccant within the isolation cavities
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.