Spiral-Rod Dosing Set for Direct Reagent Sampling

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Solution Overview

Problem

Existing weighing and sampling methods for biochemical reagents, particularly powders, suffer from manual operation inaccuracies, reagent contamination, and waste due to manual handling, and automated systems fail to directly sample from containers.

Innovation Solution

A dosing set with a rotatable container and internal dosing apparatus featuring spiral rods to control reagent flow, allowing automated sampling and weighing, preventing contamination and waste, and enabling quick reagent changes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual weighing and sampling operations are used, then operation flexibility is maintained, but measurement precision and reliability deteriorate due to human handling errors and contamination

Engineering Contradiction:
Improveweighing accuracyVSAvoidmanual operation complexity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The automated sampling device performs weighing and sampling operations autonomously without human intervention. The system self-regulates the sampling process through automated control mechanisms, eliminating manual handling while maintaining operational efficiency. The device automatically controls reagent flow, measures mass, and transfers samples without requiring operator manipulation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical operations with an automated mechanical system. The automated sampling device uses motorized components, automated dispensing mechanisms, and integrated weighing systems to substitute human hands and operations, thereby improving precision while maintaining ease of operation through automation.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Loss of substance

If manual handling operations are used, then operational flexibility is preserved, but loss of substance increases due to reagent falling or scattering

Engineering Contradiction:
Improvereagent wasteVSAvoidautomation level
Core Design Contradiction:
Loss of substanceVSExtent of automation

Solution Approach 1:

The automated sampling device autonomously manages reagent transfer and sampling operations, preventing human-caused waste through controlled mechanical handling. The system self-regulates reagent flow rates, positioning, and dispensing to minimize spillage and scattering that commonly occur during manual operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The automated system ensures continuous, controlled reagent flow from storage to sampling point without interruption or manual intervention. This continuous automated process eliminates the start-stop nature of manual handling, preventing reagent dropping or scattering during transfer operations and reducing overall substance loss.

Inventive Principle:
Principle #20Continuity of useful action

3Extent of automation

If automated sampling devices are used that cannot sample directly from containers, then automation is achieved, but loss of substance increases and device complexity increases due to additional transfer steps

Engineering Contradiction:
Improvesampling automationVSAvoidreagent waste
Core Design Contradiction:
Extent of automationVSLoss of substance

Solution Approach 1:

The patent merges the sampling function directly with the reagent container by integrating a sampling mechanism that operates inside or in direct communication with the container. This consolidation eliminates intermediate transfer steps between separate sampling devices and containers, allowing automated sampling to occur directly from the reagent source without additional handling that would cause waste.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The invention extracts the sampling function from external automated devices and places it directly within the container environment. By taking the sampling capability into the container itself, the system enables direct automated sampling without requiring reagent removal and transfer to separate equipment, thereby preventing waste while maintaining automation.

Inventive Principle:
Principle #2Taking out (Extraction)

4Measurement precision

If multiple manual operations are performed to achieve desired weighing results, then measurement accuracy may improve, but loss of time increases due to repeated adjustments

Engineering Contradiction:
Improveweighing accuracyVSAvoidsampling time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The automated sampling device performs multiple adjustment operations autonomously and simultaneously rather than requiring sequential manual adjustments. The system self-corrects weighing errors through automated feedback mechanisms, performing what would require multiple manual iterations in a single automated cycle, thereby maintaining precision while reducing time loss.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The automated system performs weighing and sampling operations in continuous uninterrupted sequence without the pauses and re-adjustments inherent in manual operations. The automated device maintains continuous control over sampling rate, position, and mass measurement, achieving desired accuracy in a single continuous operation rather than through multiple discrete adjustment steps.

Inventive Principle:
Principle #20Continuity of useful action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The dosing set enhances sampling efficiency, accuracy, and reduces reagent waste by automating the process, ensuring precise dosing and minimizing contamination risks.

Implementation Method 1

at least one first spiral rod provided within the first channel, wherein the least one first spiral rod is configured to be driven to rotate in a first direction, so as to deliver the reagent from the first channel to the first channel second opening

Methodology Applied
Scientific EffectSpiral rod rotation: Helix

Implementation Method 2

rotating the container during the process of sampling not only allows the reagent in the container to flow to prevent accumulation and caking

Methodology Applied
Scientific EffectRotational flow: Convection

Data Source

PatentUS12449439B2Dosing set
Publication Date: 2025.10.21 IMOTION SHANGHAI PROD DESIGN
  • US12449439B2 patent drawing
  • US12449439B2 patent drawing
  • US12449439B2 patent drawing

AI summary

A dosing set including a container and a dosing apparatus. The container can hold a reagent and be driven to rotate. The dosing apparatus includes a first channel and at least one first spiral rod. The first channel has a first channel first opening connecting with the container to allow the reagent inside the container to enter the first channel, and a first channel second opening connecting with outside of the first channel to allow the reagent to leave the first channel. The first spiral rod is within the first channel and can be driven to rotate in a first direction, to deliver the reagent from the first channel to the first channel second opening, and to control a mass flow rate of the reagent leaving through the first channel second opening by adjusting the rotational speed of itself.