Centrifugal Piston Gap Design for Size-Based Separation

Solution Overview

Problem

Conventional centrifugal pistons and separation devices face challenges in allowing target substances of a predetermined size or smaller to pass through without closing the passage when centrifugal force is applied, which is crucial for effective separation of impurities from biological tissues like adipose tissues.

Innovation Solution

A centrifugal piston design featuring a piston body with a weight that forms a gap between its inner and outer surfaces, allowing substances to be discharged through a specific passage system, ensuring that only substances of a predetermined size or smaller can pass through while maintaining passage openness under centrifugal force.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional centrifugal piston is used, then the passage may close under centrifugal force, but target substances of predetermined size or smaller cannot pass through effectively

Engineering Contradiction:

Improvepassage openness under centrifugal forceVSAvoidsubstance separation efficiency

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by creating a gap between the weight's outer surface and the piston body's inner surface at a specific location. This localized gap allows target substances of predetermined size or smaller to pass through while the rest of the piston structure maintains its sealing function under centrifugal force, thus resolving the contradiction between passage openness and separation efficiency.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent employs dynamics by designing a gap that forms dynamically under centrifugal force. The gap between the weight and piston body is not a fixed opening but forms dynamically when the weight is positioned against the inner surface during centrifugal separation, allowing controlled passage of target substances while maintaining reliability.

Inventive Principle:

Principle #15Dynamics

2Manufacturing precision

If the passage is kept open to allow substance passage, then separation efficiency improves, but the piston cannot maintain sealing under centrifugal force

Engineering Contradiction:

Improvesubstance separation efficiencyVSAvoidsealing performance under centrifugal force

Core Design Contradiction:

Manufacturing precisionVSReliability

Solution Approach 1:

The patent applies local quality by creating a gap between the weight's outer surface and the piston body's inner surface at a specific location. This localized gap allows target substances of predetermined size or smaller to pass through while the rest of the piston structure maintains its sealing function under centrifugal force, thus resolving the contradiction between passage openness and separation efficiency.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The gap acts as an intermediary element that mediates between the sealing requirement and the substance passage requirement. It provides a controlled pathway for target substances while the surrounding piston structure maintains sealing, thus resolving the contradiction between separation efficiency and sealing performance.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Manufacturing precision

If a gap is formed between weight and piston body, then target substances can pass through, but the structure becomes more complex

Engineering Contradiction:

Improvesubstance passage controlVSAvoidpiston structure complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by creating a gap between the weight's outer surface and the piston body's inner surface at a specific location. This localized gap allows target substances of predetermined size or smaller to pass through while the rest of the piston structure maintains its sealing function under centrifugal force, thus resolving the contradiction between passage openness and separation efficiency.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent employs segmentation by dividing the piston structure into distinct functional zones: the gap region for substance passage and the surrounding sealing regions. This segmentation allows the piston to simultaneously provide both substance passage control and sealing function, managing complexity through functional division.

Inventive Principle:

Principle #1Segmentation

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

This design enables efficient separation of target substances from biological tissues by allowing substances of specific sizes to pass through while preventing larger substances from doing so, effectively purifying adipose tissues and other biological materials.

Implementation Method 1

when centrifugal force is applied

Methodology Applied

Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

at least one substance centrifugally separated from biological tissues is discharged through the first inlet, the first inflow passage, the gap, and the outlet

Methodology Applied

Scientific EffectCentrifugal separation: Centrifugal Separation

Data Source

PatentUS20230405610A1Centrifugal piston and centrifugal separation device having same

Publication Date: 2023.12.21 LEE IN OK

AI summary

Disclosed is a centrifugal piston including a piston body and a weight. In a centrifugal environment, a first outer weight surface of the weight is configured to get in contact with a first inner body surface of the piston body, and a gap is formed between the first inner body surface and a recess of the weight.