Abrasion Device Resilient Mounting Pressure Control

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Solution Overview

Problem

Existing skin abrasion devices lack precision and safety, often causing injuries due to uncontrolled pressure and depth of penetration, and fail to selectively treat small areas like papules without risking irritation or excessive skin removal.

Innovation Solution

An abrasion device with a resiliently mounted abrasion unit and protective sleeve that limits pressure, combined with a disposable, hygienically designed clip connection and adjustable rotational frequency, ensures controlled skin removal by preventing excessive pressure and allowing for selective treatment with adaptable sleeve shapes and elevation configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the abrasion unit is rigidly mounted to ensure stable skin treatment, then treatment consistency is improved, but the risk of injury increases due to uncontrolled pressure

Engineering Contradiction:

Improvetreatment consistencyVSAvoidskin injury risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The abrasion unit is mounted resiliently on the drive shaft, allowing it to dynamically adjust its position. The resilient mounting enables the abrasion unit to move away from the skin when excessive pressure is applied, preventing injuries while maintaining consistent treatment during normal operation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The resilient mounting acts as a pre-established cushioning mechanism that absorbs excessive pressure before it can cause skin injury. The spring element in the resilient mounting compresses under excessive pressure, automatically reducing the force transmitted to the skin.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Object-affected harmful factors

If the abrasion unit is resiliently mounted to prevent excessive pressure, then safety is improved, but control precision may be compromised

Engineering Contradiction:

Improveexcessive pressure preventionVSAvoidpressure control precision

Core Design Contradiction:

Object-affected harmful factorsVSMeasurement precision

Solution Approach 1:

The resilient mounting provides automatic feedback on pressure application. When the operator applies excessive pressure, the resilient mounting compresses and the abrasion unit moves away from the skin, immediately reducing the pressure. This feedback mechanism maintains precise pressure control without requiring active monitoring or adjustment.

Inventive Principle:

Principle #23Feedback

3Object-affected harmful factors

If a protective sleeve is added to limit abrasion depth, then safety is improved, but device complexity increases

Engineering Contradiction:

Improvedepth of penetration controlVSAvoidstructure complexity

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The protective sleeve acts as an intermediary element between the abrasion unit and the skin. It mechanically limits the maximum depth of penetration by physically blocking further advancement, providing a simple and effective depth control mechanism without complex active control systems.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Object-affected harmful factors

If disposable abrasion units are used to ensure hygiene, then infection risk is reduced, but cost increases

Engineering Contradiction:

Improveinfection riskVSAvoidmaterial consumption

Core Design Contradiction:

Object-affected harmful factorsVSLoss of substance

Solution Approach 1:

The abrasion unit is designed as a disposable component that is discarded after single use. This eliminates the need for complex sterilization processes and ensures hygienic treatment, particularly important when treating broken skin or sensitive areas. The low cost of the disposable unit makes this approach economically viable.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 device enables safe, defined, and controlled skin abrasion, reducing the risk of injury and irritation, while ensuring hygiene through disposable components and adjustable settings for various skin types and areas.

Implementation Method 1

the abrasion unit is resiliently mounted with respect to the handle housing, namely in such a way that the abrasion unit moves away from the skin when the contact pressure is too high

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the drive shaft also advantageously partially coils, in that a resilient mounting is provided in the shaft, which enables the shaft to be pushed together in its longitudinal direction

Methodology Applied

Scientific EffectSpring: Spring

Implementation Method 3

The abrasion unit (2) rotating in this way is then brought into engagement with the skin to be treated by means of the handle housing (3), so that the rotation of the abrasion unit (2) removes the uppermost skin layer

Methodology Applied

Scientific EffectAbrasion: Abrasion

Data Source

PatentEP2082696B1Abrasion device

Publication Date: 2012.03.28 LA FONTAINE HELMUT

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Figure 2
Figure 3a~3c

AI summary

The device (1) has a grip housing (3) comprising an electric drive for power transmission to an abrasion unit (2). The abrasion unit is elastically supported opposite to the housing and is encompassed by a protective sleeve (11) such that an upper edge of the protective sleeve lies behind an abrasion surface of the abrasion unit in an unloaded condition. The elastic supporting of the abrasion surface during high pressure on the abrasion unit permits evasion of the abrasion surface up to the upper edge of the sleeve. The abrasion surface has a rounded section in its edge region.