3D Biological Storage Bag and Casing Kit
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Solution Overview
Problem
Current two-dimensional casings for storing umbilical cord blood are poorly adapted, making it difficult to insert the storage bags, creating additional thickness, and retaining air that can hinder freezing and thawing, potentially damaging cells.
Innovation Solution
A kit comprising a three-dimensional bag and a matching casing with a housing having a constant geometry and a slot for easy insertion, along with external strips for hermetic sealing, minimizing air volume and facilitating placement in a metal cassette.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a two-dimensional casing is used to protect the storage bag, then the bag is hermetically sealed, but it creates additional thickness and is difficult to insert into the casing
Solution Approach 1:
The patent transitions from a two-dimensional flat casing to a three-dimensional bag structure. The bag is formed by folding a planar sheet into a three-dimensional configuration with sealed edges, allowing direct insertion into the casing without the difficulty of sliding flat bags into two-dimensional casings. This dimensional transformation resolves the insertion ease problem while maintaining hermetic sealing through the folded and sealed edges.
Solution Approach 2:
The three-dimensional bag is designed to be nested within the casing. The bag's three-dimensional structure allows it to fit efficiently inside the casing, with the casing providing external protection and the bag containing the biological product. This nesting arrangement simplifies the overall structure and facilitates easy insertion while ensuring hermetic sealing.
2Reliability
If a two-dimensional casing is used, then the bag is protected, but it retains air that hinders freezing and thawing
Solution Approach 1:
The patent extracts and removes air from the space between the bag and casing. By using a three-dimensional bag structure that conforms to the casing interior, the design eliminates trapped air pockets that would otherwise hinder freezing and thawing processes. The bag's three-dimensional configuration allows complete contact with the casing walls, ensuring no air remains trapped.
Solution Approach 2:
The patent changes the geometric parameters of the bag from two-dimensional to three-dimensional. This parameter change allows the bag to occupy space more efficiently and conform to the casing shape, eliminating air gaps. The three-dimensional structure with specific dimensional parameters ensures optimal contact with the casing, removing air that would interfere with thermal transfer during freezing and thawing.
3Volume of stationary object
If the casing dimensions are adjusted to fit the bag, then storage space is optimized, but air volume increases and disturbs placement in the metal cassette
Solution Approach 1:
The patent uses a three-dimensional bag structure that vertically extends to engage with the metal cassette. The three-dimensional configuration allows the bag to reach into the cassette and be properly positioned, eliminating the problem of air volume disturbing placement. The vertical dimension of the three-dimensional bag enables direct engagement with the cassette's positioning mechanisms.
Solution Approach 2:
The patent applies different dimensional characteristics to different parts of the bag structure. The three-dimensional bag has specific local dimensions that allow it to conform to the casing while maintaining enough extension to engage with the metal cassette. This local quality optimization ensures proper fit and placement without excessive air volume interfering with cassette insertion.
Data Source
AI summary
The invention relates to a kit for preserving a biological product including a three-dimensional bag (1) intended for holding said biological product, said bag (1) having a substantially constant three-dimensional geometry during the use thereof, as well as a casing (2) intended for packing said bag, said casing (2) including a cavity (3) arranged such as to receive said bag (1), said cavity (3) having a substantially constant three-dimensional geometry during the use thereof, and a slot (4) being provided along one edge of said cavity such as to enable said bag (1) to be inserted in said cavity (3), a front strip (5) and a rear strip (6) extending on the outside away from said slot (4), said strips being intended for being combined with one another in order to provide an airtight seal of said cavity (3) of the casing (2).