Detachable Secondary Chamber for Urine Sample Separation

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Solution Overview

Problem

Existing urine collection and testing devices face challenges in separating primary test samples from determined test samples, leading to contamination and increased costs due to the need for precise piston mechanisms and large, leak-prone designs.

Innovation Solution

A device with a first chamber for collecting liquid samples and a second chamber for secondary determination tests, where the first chamber is detachably connected with the second chamber, allowing for fluid communication before separation, enabling efficient sample separation and storage for subsequent testing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a piston mechanism is used to separate test samples from collected samples, then sample separation is achieved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvesample separationVSAvoidpiston mechanism

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The device is divided into two independent chambers: a first chamber for collecting liquid samples and a second chamber for secondary determination tests. The chambers are detachably connected, allowing the second chamber to be separated from the first chamber after sample transfer, thereby eliminating the need for complex piston mechanisms while achieving effective sample separation.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the whole device is transported to determination testing agencies, then complete testing is possible, but transportation safety and storage cost increase

Engineering Contradiction:

Improvetesting capabilityVSAvoidliquid leakage

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The second chamber containing the liquid sample for secondary determination is detachably connected to the first chamber. After the primary test, only the second chamber needs to be transported to the determination testing agency, not the entire device. This extraction of the critical component reduces transportation volume, minimizes leakage risk, and lowers storage costs while maintaining complete testing capability.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If precise piston mechanisms are used for sample transfer, then sample separation is achieved, but manufacturing cost increases

Engineering Contradiction:

Improvesample transferVSAvoiddevice cost

Core Design Contradiction:

Ease of operationVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250137890A1Device with secondary determination chamber for testing analyte in liquid sample

Publication Date: 2025.05.01 ZHEJIANG ORIENT GENE BIOTECH CO LTD

AI summary

The present invention provides a device for detecting an analyte in a liquid sample, and the device includes a first chamber for collecting the liquid sample and a second chamber for collecting a liquid sample for determination test; where the first chamber is detachably combined or connected with the second chamber; the first chamber is in communication with the second chamber; and the liquid sample located in the second chamber is a part of the liquid sample in the first chamber; in some embodiments, the second chamber is connected with one traction mechanism, which helps the second chamber depart from the first chamber.