Negative Pressure Massage Device Using Electromagnetic Piston Action

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Solution Overview

Problem

Existing massage devices for female health care rely excessively on high-frequency mechanical movement, lacking sensitivity and effectiveness, and require high power mechanism reliability and safety.

Innovation Solution

A negative pressure sucking massage device utilizing a hollow coil cylinder, metal coil, and sliding magnet block within a housing, generating a magnetic field to create continuous negative pressure for effective massage through air evacuation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high-frequency mechanical movement is used for massage, then massage coverage is improved, but sensing capability and health care effectiveness deteriorate

Engineering Contradiction:
Improvemassage coverageVSAvoidsensing capability
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent replaces high-frequency mechanical vibration with a negative pressure suction system. The massage head creates negative pressure through air evacuation, causing tissue to be sucked into the massage head for massage, eliminating the need for high-frequency mechanical movement while improving sensing capability and health care effectiveness

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

2Productivity

If high-frequency mechanical movement is used for massage, then massage coverage is improved, but power mechanism reliability and safety deteriorate

Engineering Contradiction:
Improvemassage coverageVSAvoidpower mechanism reliability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent substitutes the complex high-frequency mechanical vibration system with a negative pressure generation system. This eliminates the need for high-power motors and complex mechanical drive mechanisms, significantly improving power mechanism reliability and safety while reducing massage coverage

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

Solution Approach 2:

The patent uses pneumatic principles by generating negative pressure through air evacuation. The negative pressure generation unit creates a vacuum effect that sucks tissue into the massage head, replacing mechanical vibration with pneumatic action for massage delivery

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Reliability

If negative pressure generation unit is added, then massage effectiveness is improved, but device complexity increases

Engineering Contradiction:
Improvemassage effectivenessVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent integrates the negative pressure generation unit directly into the massage head structure. The negative pressure generation unit, housing, and massage functions are combined in a single integrated assembly, reducing overall device complexity while maintaining massage effectiveness

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The massage head serves multiple functions: it acts as both the massage applicator and the negative pressure generation chamber. This multi-functionality eliminates the need for separate components, simplifying the overall device structure while maintaining effective massage capability

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

Provides excellent massage effects with reduced noise and improved stability, offering enhanced health care and physiotherapy while maintaining simplicity and reliability.

Implementation Method 1

After the metal coil is energized with electricity, a magnetic field is formed such that the sliding magnet block reciprocates as a piston within the hollow coil cylinder

Methodology Applied
Scientific EffectMagnetic field: Magnetic Field

Implementation Method 2

the metal coil is energized with electricity, a magnetic field is formed

Methodology Applied
Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 3

the two magnets are mounted such that a side of the magnet faces a side of the sliding magnet block having the same polarity to generate a repulsion force to each other

Methodology Applied
Scientific EffectMagnetic repulsion force: Ion Repulsion/Attraction

Data Source

PatentEP4393466B1Negative pressure sucking massage device
Publication Date: 2025.08.27 DUAN ZHI
  • EP4393466B1 patent drawingFigure 1~2

AI summary

A negative pressure sucking massage device is provided that includes: a housing, a negative pressure generation unit and a power source The negative pressure generation unit includes a hollow coil cylinder, a metal coil, and a sliding magnet block provided within and closely fitting with the coil cylinder The negative pressure generation unit and the power source are housed within the housing. In operation of the negative pressure sucking massage device, the negative pressure generation unit energizes the metal coil with electricity to generate a magnetic field resulting in: driving the sliding magnet block to reciprocate to form a piston effect, evacuating air to form a negative pressure to produce a sucking effect on the stimulated portion(s) continuously, and thus achieving excellent and comfortable effects of health care and physiotherapy. Moreover, the apparatus is simple in structure, stable in performance and low in operation noise.