Spark Generator for Needleless Formula Injector

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Solution Overview

Problem

Conventional needleless formula injectors using laser energy face challenges in miniaturization, high power consumption, and inefficiency, making them difficult for consumers to operate safely and effectively.

Innovation Solution

A spark generator with a pressure chamber and a formula injector system that uses a circuit to generate a spark voltage between electrodes, accompanied by an electromagnet to move a movable electrode and create pressure, which is transferred to a formula chamber for injection, allowing for efficient and safe delivery of formulas without needles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If laser energy is used to generate pressure in the pressure chamber, then the formula can be delivered into the skin as a micro-jet, but the device becomes large, consumes high power, and is difficult to operate safely

Engineering Contradiction:
Improveformula delivery effectivenessVSAvoiddevice size and operation difficulty
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the laser-based optical system with an electrical spark system. Instead of using a laser generator and optical fiber to generate pressure through laser heating and cavitation, the invention uses a spark generator with electrodes that create a spark discharge in a fluid-filled pressure chamber. This substitution eliminates the need for complex optical components and reduces device size while maintaining the ability to generate sufficient pressure for formula delivery.

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

Solution Approach 2:

The patent changes the energy generation parameter from optical energy (laser) to electrical energy (spark). By using a spark generator that applies voltage between electrodes immersed in the pressure chamber fluid, the system achieves pressure generation through electrical discharge rather than optical heating. This parameter change enables smaller device dimensions and lower power consumption while maintaining effective pressure generation for micro-jet formula delivery.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If laser energy is used to generate pressure, then formula injection is achieved, but power consumption increases significantly

Engineering Contradiction:
Improvepressure generation capabilityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent replaces the laser-based optical system with an electrical spark system. Instead of using a laser generator and optical fiber to generate pressure through laser heating and cavitation, the invention uses a spark generator with electrodes that create a spark discharge in a fluid-filled pressure chamber. This substitution eliminates the need for complex optical components and reduces device size while maintaining the ability to generate sufficient pressure for formula delivery.

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

Solution Approach 2:

The patent changes the energy generation parameter from optical energy (laser) to electrical energy (spark). By using a spark generator that applies voltage between electrodes immersed in the pressure chamber fluid, the system achieves pressure generation through electrical discharge rather than optical heating. This parameter change enables smaller device dimensions and lower power consumption while maintaining effective pressure generation for micro-jet formula delivery.

Inventive Principle:
Principle #35Parameter changes

3Stress or pressure

If powerful lasers such as YAG laser are used to obtain desirable pressure, then effective pressure is generated, but the device becomes complex and unsafe for consumer operation

Engineering Contradiction:
Improvepressure magnitudeVSAvoidconsumer safety and ease of use
Core Design Contradiction:
Stress or pressureVSEase of operation

Solution Approach 1:

The patent replaces the laser-based optical system with an electrical spark system. Instead of using a laser generator and optical fiber to generate pressure through laser heating and cavitation, the invention uses a spark generator with electrodes that create a spark discharge in a fluid-filled pressure chamber. This substitution eliminates the need for complex optical components and reduces device size while maintaining the ability to generate sufficient pressure for formula delivery.

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

Solution Approach 2:

The patent changes the energy generation parameter from optical energy (laser) to electrical energy (spark). By using a spark generator that applies voltage between electrodes immersed in the pressure chamber fluid, the system achieves pressure generation through electrical discharge rather than optical heating. This parameter change enables smaller device dimensions and lower power consumption while maintaining effective pressure generation for micro-jet formula delivery.

Inventive Principle:
Principle #35Parameter changes

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 solution enables a compact, low-power formula injector that consumers can easily operate, providing effective pressure generation for formula delivery with reduced energy consumption and enhanced safety.

Implementation Method 1

a circuit (4) for generating a predetermined spark voltage; wherein the pressure chamber comprises: a non-compressive fluid (30) contained therein; a fixed electrode (24) disposed in the non-compressive fluid (30); a movable electrode (26) disposed in the non-compressive fluid (30) and separated from the fixed electrode (24) by a predetermined distance

Methodology Applied
Scientific EffectSpark: Electric Spark

Implementation Method 2

an electromagnet (6), wherein the electromagnet (6) is configured to apply a magnetic force to the permanent magnet (28) to move the movable electrode (26) toward the fixed electrode (24) for generating a spark between the movable electrode (26) and the fixed electrode (24)

Methodology Applied
Scientific EffectMagnetic force: Electromagnet

Implementation Method 3

a pressure transferring structure (32) constituting a part of a wall of the pressure chamber (22) and configured to transfer a pressure in the non-compressive fluid (30) generated by the spark to the outside of the pressure chamber (22)

Methodology Applied
Scientific EffectPressure transfer: Pascal's Law

Data Source

PatentUS20240342379A1Spark generator for generating pressure, formula injector comprising spark generator, method for generating pressure by spark, and method for injecting formula
Publication Date: 2024.10.17 LOREAL SA
  • US20240342379A1 patent drawing
  • US20240342379A1 patent drawing
  • US20240342379A1 patent drawing

AI summary

The present application provides a spark generator for generating pressure. The spark generator comprises: a main device; and a pressure chamber disposed adjacent to the main device, wherein the main device comprises: a circuit for generating a predetermined spark voltage; and an electromagnet, wherein the pressure chamber comprises: a non-compressive fluid contained therein; a fixed electrode disposed in the non-compressive fluid; a movable electrode disposed in the non-compressive fluid and separated from the fixed electrode at a predetermined distance; and a permanent magnet disposed on the movable electrode, wherein the circuit is configured to apply the spark voltage between the movable electrode and the fixed electrode, wherein the electromagnet is configured to apply a magnetic force to the permanent magnet to move the movable electrode toward the fixed electrode for generating spark between the movable electrode and the fixed electrode, wherein the pressure chamber comprises a pressure transferring structure composing a part of a wall of the pressure chamber and configured to transfer a pressure of the non-compressive fluid generated by the spark to outside of the pressure chamber.