Clitoral Pressure-Field Stimulator With Alternating Pressure Cycles

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Solution Overview

Problem

Existing erogenous zone stimulation devices, particularly for the clitoris, suffer from complexity, hygiene issues, habituation, and skin drying due to direct or continuous pressure application, with vacuum pumps leading to contamination and discomfort.

Innovation Solution

A stimulation device utilizing a pressure field generation system with two chambers and a connecting element to create alternating overpressure and underpressure, avoiding direct contact and maintaining a closed system to prevent contamination and habituation, using air or liquid media for indirect massage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If vacuum pumps are used for indirect stimulation, then blood flow to the clitoris is increased and sensitivity is enhanced, but the device becomes complex, hygiene is compromised, and skin drying occurs

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

Solution Approach 1:

The patent extracts the vacuum pump from the stimulation device, using only the suction chamber as a simple cup-like structure. The complex vacuum generation mechanism is completely removed, replacing it with a simple manual squeezing action on a flexible chamber to generate negative pressure, thereby eliminating device complexity while maintaining the blood flow enhancement effect

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The stimulation device is designed to be self-contained with no external connections. The flexible chamber can be manually squeezed by the user to generate negative pressure, and the entire system operates without external power sources or complex control mechanisms, making it simple to manufacture and maintain while ensuring hygiene through a closed system

Inventive Principle:
Principle #25Self-service

2Reliability

If continuous negative pressure is applied, then blood flow increases and pleasure is enhanced, but habituation occurs limiting long-term effectiveness

Engineering Contradiction:
Improvestimulation effectivenessVSAvoidduration of action
Core Design Contradiction:
ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent implements periodic action by designing the stimulation device to apply negative pressure in cycles rather than continuously. The flexible chamber can be squeezed and released repeatedly, creating alternating periods of negative pressure and atmospheric pressure. This periodic stimulation prevents habituation while maintaining effectiveness over extended use, as the erogenous zone experiences varying pressure patterns that remain novel and stimulating

Inventive Principle:
Principle #19Periodic action

3Stress or pressure

If vacuum pumps with airflow openings are used, then negative pressure is generated, but vaginal lubrication is drawn out causing skin drying

Engineering Contradiction:
Improvenegative pressureVSAvoidskin drying
Core Design Contradiction:
Stress or pressureVSObject-affected harmful factors

Solution Approach 1:

The patent removes the airflow openings completely from the design. The flexible chamber is sealed except for the opening that contacts the skin, preventing any escape of air or moisture. This extraction of the harmful airflow feature eliminates the drying effect while preserving the beneficial negative pressure generation through manual squeezing

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The flexible chamber acts as an intermediary between the user's manual action and the erogenous zone. It transmits the squeezing motion to generate negative pressure while simultaneously containing and protecting the natural lubrication, preventing its removal and thus avoiding skin drying

Inventive Principle:
Principle #24Intermediary (Mediator)

4Reliability

If direct contact stimulation is used, then effective stimulation is achieved, but irritation or skin irritation occurs

Engineering Contradiction:
Improvestimulation effectivenessVSAvoidskin irritation
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The flexible chamber serves as an intermediary between the user and the erogenous zone. It transmits the stimulation effect through negative pressure and gentle compression without requiring direct contact between the user's hand or external devices and the sensitive skin, thereby preventing irritation while maintaining effectiveness

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces direct mechanical contact stimulation with indirect pressure field stimulation. Instead of physical contact with vibrators or massagers, the device uses negative pressure generated in the flexible chamber to stimulate blood flow and sensate the erogenous zone, reducing the risk of mechanical irritation

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

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 provides effective, hygienic, and non-habituating stimulation by mimicking natural sexual movements, enhancing sensitivity and arousal without drying the skin, and simplifying operation through automatic pressure modulation.

Implementation Method 1

A stimulation device utilizing a pressure field generation system with two chambers and a connecting element to create alternating overpressure and underpressure

Methodology Applied
Scientific EffectPressure field generation through volume change: Pressure Gradient

Implementation Method 2

The negative pressure exerted on the clitoris with this type of device creates a negative pressure within the clitoris itself, which is usually lower than systolic blood pressure. This pressure difference leads to dilation of the clitoris and/or stimulates blood flow in the affected area

Methodology Applied
Scientific EffectBlood flow stimulation through negative pressure: Pressure Gradient

Data Source

PatentEP4721718A2Stimulation device
Publication Date: 2026.04.08 NOVOLUTO GMBH
  • EP4721718A2 patent drawingFigure 1
  • EP4721718A2 patent drawingFigure 2
  • EP4721718A2 patent drawingFigure 3

AI summary

Stimulation device (1) for the clitoris (12); comprising: a pressure field generating device (2) with a first chamber (3); and a second chamber (4) with at least one opening (42) for placement over the clitoris (12); and a connecting element (5) connecting the first chamber (3) to the second chamber (4); and a drive unit (6) that changes the volume of the first chamber (3) by deflecting a flexible wall (31) of the first chamber (3) such that a stimulating pressure field is generated in the second chamber (4) via the connecting element (5); and a control device (7) that controls the drive unit (6); wherein the pressure field generated in the second chamber (4) consists of a pattern of underpressures and overpressures superimposed on normal pressure.