Asymmetrical Allergy Applicator Design for Error Reduction
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Solution Overview
Problem
Current allergy skin testing kits are prone to errors due to symmetrical applicator design, lack of clear numbering systems, and inadequate sealing, leading to improper placement and contamination of allergenic materials, which increases the risk of false readings and reduces efficiency in non-specialist settings.
Innovation Solution
The design includes premeasured, easy-to-empty allergenic agents in an asymmetrical pattern with a logical labeling system, a secure locking mechanism for the test case, and asymmetrical applicators with multiple tips to prevent misplacement and evaporation, along with non-slip feet for stability, facilitating accurate and efficient testing by non-specialists.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a symmetrical applicator design is used, then the applicator can be easily manufactured, but it becomes hard to grip and prone to reverse placement errors
Solution Approach 1:
The applicator is designed with an asymmetrical configuration where the arms and legs are positioned at specific non-symmetrical locations. This asymmetry makes the applicator easy to grip with one hand while preventing reverse placement through its unique geometric shape, thus resolving the contradiction between ease of manufacture and ease of operation.
2Ease of manufacture
If a symmetrical applicator with numbering system is used, then the applicator can be manufactured, but the numbering is hard to see and errors in reading results occur
Solution Approach 1:
The applicator incorporates color-coded indicators on its arms and legs that are highly visible and easily distinguishable. These color changes or color-coded markings provide clear visual identification of the applicator orientation and corresponding allergen locations, making test result reading accurate while maintaining ease of manufacture.
3Ease of operation
If the testing tray is open for easy access, then the applicator can be easily placed, but allergenic material evaporates and becomes contaminated
Solution Approach 1:
The testing tray incorporates a flexible seal or cover that can be easily opened for applicator placement but automatically closes to create a sealed environment. This flexible membrane or seal prevents allergen evaporation and contamination while maintaining ease of operation during the testing process.
4Device complexity
If the testing tray lacks closure means, then the structure is simple, but allergenic material evaporates from the reservoirs
Solution Approach 1:
The testing tray includes a flexible seal or membrane that forms a closure between the reservoirs and the external environment. This simple yet effective sealing mechanism prevents allergen evaporation without significantly increasing the overall device complexity, maintaining structural simplicity while preventing substance loss.
5Manufacturing precision
If the applicator body is small for precision testing, then the testing can be performed accurately, but the applicator becomes hard to grip
Solution Approach 1:
The applicator is segmented into multiple components including a handle portion and multiple arms with legs, allowing the user to grip the handle comfortably while the segmented arms and legs provide precise control for applying allergens to specific skin locations, thus resolving the contradiction between size and gripping ease.
6Device complexity
If the applicator lacks bottom finger support, then the structure is simple, but the applicator is hard to grip and control
Solution Approach 1:
The applicator is segmented into a handle portion and multiple arms with legs, allowing the user to grip the handle comfortably while the segmented arms and legs provide precise control for applying allergens to specific skin locations, thus resolving the contradiction between size and gripping ease.
Data Source
AI summary
An allergy testing kit contains a plurality of allergy testing applicators, an allergy testing tray and a plurality of allergen bottles each containing an allergen. Each of the applicators contains an elongated handle, a plurality of arms extending from the elongated handle and disposed in an asymmetrical configuration, and a plurality of legs with tines extending from each of the arms. The allergy testing tray contains a main body having an underside and a top surface, a cover for locking with the main body and a plurality of reservoirs extending from the underside of the main body. The reservoirs each have a chamber with an opening extending from the top surface. The reservoirs are disposed in different groups and each group has an asymmetrical configuration matching that of the applicator.