Needleless Syringe with Transversal Slots for Particle Penetration

Solution Overview

Problem

Conventional needleless syringes often fail to achieve sufficient penetration depth for therapeutic agents, lacking versatility in operational characteristics for effective subcutaneous delivery.

Innovation Solution

A needleless syringe design featuring a gas source, a cannon with transversal slots, and a source of therapeutic particles, where the gas release through the slots reduces pressure and accelerates particle flow for enhanced penetration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If conventional needleless syringes use rapid gas expansion to accelerate therapeutic particles, then particles can penetrate the skin, but the penetration depth is insufficient for some applications

Engineering Contradiction:

Core Design Contradiction:

SpeedVSLength of moving object

Solution Approach 1:

The cannon is segmented into multiple sections with transversal slots at different positions, creating staged gas expansion zones that progressively accelerate particles to higher velocities for deeper penetration

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The pressure gradient along the cannon is modified by introducing transversal slots at specific positions, changing the gas expansion parameters to achieve optimized particle acceleration and deeper skin penetration

Inventive Principle:

Principle #35Parameter changes

2Stress or pressure

If conventional needleless syringes use a sealed cannon design, then gas pressure is maintained for particle acceleration, but pressure buildup reduces acceleration efficiency

Engineering Contradiction:

Core Design Contradiction:

Stress or pressureVSProductivity

Solution Approach 1:

Transversal slots are introduced to extract excess gas pressure at specific locations along the cannon, preventing pressure buildup while maintaining sufficient pressure for particle acceleration

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The transversal slots provide preliminary pressure relief before the gas reaches the cannon exit, preventing harmful pressure buildup that would reduce acceleration efficiency

Inventive Principle:

Principle #9Preliminary anti-action

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 syringe achieves deeper and more uniform penetration of therapeutic particles into the skin, improving the delivery efficiency compared to conventional needleless syringes.

Implementation Method 1

Gas released from the gas source causes a propagation of the therapeutic particles through the cannon

Methodology Applied

Scientific EffectPressure gradient: Pressure Gradient

Implementation Method 2

The side opening is configured to reduce a pressure of the gas in the cannon

Methodology Applied

Scientific EffectPressure relief: Pressure Drop

Data Source

PatentUS10279113B2Needleless syringe and method for delivering therapeutic particles

Publication Date: 2019.05.07

AI summary

The present disclosure relates to a needleless syringe and method for delivering therapeutic particles. A source of therapeutic particles is located between a gas source and a cannon having a side opening. Gas released from the gas source causes a propagation of the therapeutic particles through the cannon. The side opening causes a reduction of a pressure of the gas in the cannon.