Interchangeable Specimen Collection Assembly With Leak-Tight Threaded Sealing

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Solution Overview

Problem

Existing rapid test kits are limited to either spitting-type or swab-type collection devices, leading to increased cost and inconvenience due to the need for users to carry and purchase both types, and both methods have their own operational challenges.

Innovation Solution

A specimen collection device with interchangeable collection units, including a tubular body, a first collection unit for spitting, and a second collection unit with a sampling member, allowing users to select the method based on preference or need, with threaded connections to prevent leakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a single collection device is designed for one specific method (spitting or swabbing), then the device structure can be simple and easy to manufacture, but users need to carry and purchase multiple devices to cover different collection methods

Engineering Contradiction:

Improvedevice structure simplicityVSAvoidcollection method coverage

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The collection device incorporates two different collection units (spitting-type and swabbing-type) that can be detachably assembled to the same tubular body, allowing a single device to perform multiple collection functions. This multi-functionality design enables users to carry only one device while covering both collection methods.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The collection device is divided into separable components: a tubular body and detachable collection units. The collection units can be independently assembled or disassembled from the tubular body, allowing flexible configuration and easy manufacturing of each component while maintaining overall versatility.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If the collection device uses detachable connection portions for interchangeable units, then versatility and ease of operation are improved, but leakage risk may increase at the connection interfaces

Engineering Contradiction:

Improveinterchangeable collection unitsVSAvoidconnection interface leakage prevention

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The connection portions incorporate threaded structures that act as intermediary mechanisms between the collection units and tubular body. These threaded connections provide a reliable mechanical interface that ensures tight sealing while maintaining ease of assembly and disassembly operations.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS20260000388A1Specimen collection device

Publication Date: 2026.01.01 QUANTA VISION CO LTD

AI summary

A specimen collection device, including: a tubular body, a first collection unit, a cap and a second collection unit. The tubular body includes an opening end portion, and the opening end portion includes an opening communicated with an interior of the tubular body, an inner periphery wall and an outer periphery wall. The inner periphery wall has a first connection portion, and the outer periphery wall has a second connection portion. The first collection unit is assembled to the opening end portion and has a third connection portion, an inlet and an outlet, the inlet is communicated with the outlet, and the outlet is communicated with the interior of the tubular body. The cap is assembled to the opening end portion and covers the opening, and the cap has a fourth connection portion. The second collection unit is insertable into the interior of the tubular body.