Integrated Pipette Device with Elastic Pumping Member

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Solution Overview

Problem

Existing pipette devices require separate micropipettes and are inconvenient to prepare, use, and maintain, with inaccurate liquid discharge due to user error in viewing scales and adjusting liquid amounts.

Innovation Solution

A pipette device with a container, a first fixing member, a second fixing member, and a pumping member that delivers air into the container to pressurize the space, allowing for accurate liquid discharge without a separate scale, by maintaining a constant pressure and shape change upon pressing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a separate micropipette is used to discharge liquid, then the amount of liquid discharged can be controlled, but the device complexity increases and ease of operation decreases

Engineering Contradiction:

Improveliquid discharge accuracyVSAvoiddevice structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines the sampling chamber and micropipette functions into a single integrated device. The sampling chamber includes an elastic pressing member that can be compressed to discharge liquid, eliminating the need for a separate micropipette while maintaining accurate liquid discharge capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The sampling chamber is designed to perform multiple functions: it can collect samples, store diluted solutions, and discharge precise amounts of liquid through the integrated elastic pressing member. This multi-functional design replaces the need for separate micropipette operations.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If a scale is displayed in the sampler chamber for liquid measurement, then liquid amount can be monitored, but measurement precision decreases due to parallax error from different viewing positions

Engineering Contradiction:

Improveliquid level reading accuracyVSAvoidoperation simplicity

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces the visual scale-based measurement system with a mechanical displacement system. The elastic pressing member's compression distance directly correlates to the liquid discharge volume, providing accurate measurement through mechanical action rather than visual reading, thereby eliminating parallax errors.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If the user adjusts the liquid amount by pressing the sampler chamber while viewing the scale, then liquid discharge can be controlled, but measurement precision decreases due to user error

Engineering Contradiction:

Improveliquid discharge controlVSAvoidliquid discharge accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent incorporates a feedback mechanism where the compression distance of the elastic pressing member directly determines the liquid discharge volume. The mechanical feedback through the elastic material provides consistent and repeatable liquid discharge amounts without requiring user interpretation of visual scales.

Inventive Principle:

Principle #23Feedback

4Measurement precision

If a separate micropipette is used for liquid discharge, then accurate liquid amount can be achieved, but ease of operation and maintenance decreases

Engineering Contradiction:

Improveliquid discharge accuracyVSAvoidpreparation and maintenance convenience

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent merges the sampling chamber and micropipette into a single integrated device, eliminating the need for separate micropipette preparation and maintenance. The elastic pressing member is built into the sampling chamber, allowing users to perform all operations with one device.

Inventive Principle:

Principle #5Merging (Combining)

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

Enables accurate and consistent liquid discharge with simple manipulation, reducing user error and maintaining precision in liquid volume, even in varying environments.

Implementation Method 1

a pumping member that is inserted into the second fixing member such that an opened end portion faces the other end of the container, delivers interior air into the container by changing in shape when it is pressed

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Implementation Method 2

presses an internal space of the container

Methodology Applied

Scientific EffectPressure increase: Pressure Increase

Data Source

PatentUS10661266B2Pipette device

Publication Date: 2020.05.26 NEOGEN FOOD SAFETY US HOLDCO CORP

AI summary

A pipette device, including a container having a predetermined space therein, in one end of which a nozzle is formed and the other end of which is opened; a first fixing member whose one end is detachably coupled to the other end of the container; a second fixing member coupled to the other end of the first fixing member; and a pumping member that is inserted into the second fixing member such that an opened end portion faces the other end of the container and delivers internal air into the container by changing shape when it is pressed, wherein the opened end portion of the pumping member is fixed between the first fixing member and the second fixing member by coupling of the first fixing member and the second fixing member.