Liquid Holding Apparatus with Variable Peel Strength Seal
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Solution Overview
Problem
Point-of-care urine dipstick testing by nurses often lacks suitable refrigeration for in-vitro diagnostic products, requiring controls with extended room temperature stability and portability, and existing liquid holding apparatuses are prone to spilling and costly to manufacture.
Innovation Solution
A liquid holding apparatus with a detachable transparent or translucent front wall and a stronger seal below the access section, allowing easy insertion of test devices and minimizing liquid spillage, featuring a lamination structure with varying peel strengths to ensure stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a liquid holding apparatus is designed with a detachable front wall for easy access, then ease of operation is improved, but the risk of liquid spillage increases
Solution Approach 1:
The liquid holding apparatus is divided into separate sections with the front wall detachable from the rear wall, allowing easy access while maintaining liquid containment through the sealed connection between sections
Solution Approach 2:
The front wall is made transparent or translucent in specific portions to allow visual inspection of the test device, providing localized transparency where needed while maintaining overall containment integrity
2Reliability
If a strong seal is applied throughout the liquid holding apparatus, then spillage resistance is improved, but ease of access deteriorates
Solution Approach 1:
The seal is segmented into different regions with varying strengths: a first seal region with lower peel strength for easy detachment and a second seal region with higher peel strength for secure liquid containment, allowing both easy access and spillage resistance
Solution Approach 2:
Different portions of the front wall have different seal strengths, with the first seal region providing easy access and the second seal region providing secure containment, creating local quality variations in the seal structure
3Stability of the object's composition
If refrigeration is provided for quality control material, then stability is improved, but portability deteriorates
Solution Approach 1:
The quality control material is formulated to maintain stability at elevated temperatures without refrigeration, changing the temperature parameter requirement from cold storage to room temperature storage, thereby enabling portability
Data Source
AI summary
A liquid holding liquid holding apparatus for insertion of a test device into a test liquid, the liquid holding apparatus having a) a liquid holding device for holding test liquid; and b) test liquid in the liquid holding device. The liquid holding device has a front wall and a rear wall. The upper section of the liquid holding device has an access section where the front wall can be detached from the rear wall to allow access for a test strip test device. At least a portion of the front wall is substantially transparent or translucent. The front wall is attached to the rear wall at the access section by a first lamination and the front wall is attached to the rear wall below the access section by a second lamination. The peel strength of the second lamination is greater than the peel strength of the first lamination.