Early Pregnancy Testing Pen Casing to Reduce Material Use

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Solution Overview

Problem

The disposal of plastic casings from early pregnancy testing pens contributes to environmental pollution due to their disposability.

Innovation Solution

The early pregnancy testing pen casing is designed with a first and second casing body, where the second casing body is divided into a functional section and a handheld section, allowing a reduced material coverage by the first casing body, and features through holes and reinforcing ribs to minimize material consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the first casing body covers the whole of the second casing body, then the protective function is improved, but the material consumption increases

Engineering Contradiction:

Improveprotective functionVSAvoidmaterial consumption

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The second casing body is divided into a functional section and a handheld section. The first casing body only covers the functional section rather than the entire second casing body, segmenting the coverage area to reduce material consumption while maintaining protection where needed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The casing design applies different coverage qualities to different sections: the functional section receives full coverage from the first casing body for protection, while the handheld section remains exposed to reduce material usage. This local differentiation optimizes both protection and material efficiency.

Inventive Principle:

Principle #3Local quality

2Ease of manufacture

If through holes are added to the handheld section, then the ease of manufacture is improved, but the structural strength may be reduced

Engineering Contradiction:

Improveease of manufactureVSAvoidstructural strength

Core Design Contradiction:

Ease of manufactureVSStrength

Solution Approach 1:

The handheld section incorporates through holes that allow the casing plate to remain thin and flexible while maintaining sufficient strength for user handling. The holes reduce material usage and simplify manufacturing processes without compromising the structural integrity needed for the handheld portion.

Inventive Principle:

Principle #30Flexible shells and thin films

3Strength

If reinforcing ribs are added around through holes, then the structural strength is improved, but the device complexity increases

Engineering Contradiction:

Improvestructural strengthVSAvoiddevice complexity

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The reinforcing ribs are integrated directly into the casing plate structure surrounding the through holes, combining the strengthening function with the existing casing design. This merging approach enhances structural strength without adding separate components or significantly increasing manufacturing complexity.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250296080A1Early Pregnancy Testing Pen Casing and Early Pregnancy Testing Pen

Publication Date: 2025.09.25 ABBOTT DIAGNOSTICS (SHANGHAI) CO LTD

AI summary

An early pregnancy testing pen casing and an early pregnancy testing pen. The early pregnancy testing pen comprises an early pregnancy testing pen casing, a test strip (3), and a water absorption piece (4); the early pregnancy testing pen casing comprises a first casing body (1) and a second casing body (2); the second casing body (2) is divided into a functional section (21) and a handheld section (22) which are arranged in the length direction of the second casing body (2); the first casing body (1) is opposite to the functional section (21) so that an accommodating space used for accommodating the test strip (3) can be formed between the first casing body (1) and the functional section (21); the accommodating space has an opening for the water absorption piece (4) located in the accommodating space to extend out of the early pregnancy testing pen casing through the opening; the handheld section (22) is used for being held by a user, and the handheld section (22) does not overlap the first casing body (1). The present application reduces the material consumption.