Multi-Nozzle Needleless Syringe With Branched Flow Paths
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Solution Overview
Problem
Conventional microjet injectors with a single nozzle require long treatment times for delivering drugs to multiple parts and face challenges in precisely forming flow paths as the number of nozzles increases.
Innovation Solution
A needleless syringe with a multi-nozzle configuration, featuring a pressure-generating unit, an upper and lower housing, an elastic membrane, an outer chamber, and an inner chamber with branch channels, allows for stable and precise delivery of drugs to multiple parts using a single energy source, with injection nozzles made of zirconium-based ceramic material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of injection nozzles is increased to deliver drugs to multiple parts, then treatment efficiency is improved, but manufacturing precision deteriorates due to difficulty in precisely forming flow paths
Solution Approach 1:
The device divides the single pressure chamber into multiple independent injection nozzles, each with its own flow path. The inner chamber is segmented to form multiple branch channels that independently connect to each nozzle, allowing precise formation of each flow path while maintaining multiple injection capabilities
Solution Approach 2:
The inner chamber is nested within the outer chamber, with the inner chamber containing multiple branch channels that form the flow paths. This nested structure allows complex multi-path flow formation within a compact design, enabling precise flow path formation through the inner chamber's internal geometry
2Loss of time
If the number of injection nozzles is increased to deliver drugs to multiple parts, then treatment time is reduced, but device complexity increases
Solution Approach 1:
The single pressure chamber serves multiple functions by simultaneously pressurizing all injection nozzles. The elastic membrane acts as a universal separator that divides the pressure chamber while maintaining pressure transmission to all nozzles, reducing device complexity compared to having separate pressure chambers for each nozzle
Solution Approach 2:
Multiple injection nozzles are merged into a single integrated device with a common pressure chamber. The nozzles share the same pressure source and housing structure, reducing overall device complexity while enabling simultaneous or sequential injection to multiple parts
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 enables dense arrangement of nozzles, reducing treatment time and ensuring stable, precise drug delivery to multiple areas, while minimizing manufacturing defects and costs.
Implementation Method 1
a pressure-generating unit (120) provided in an upper space portion (110) of the upper housing (100)
Implementation Method 2
an elastic membrane (130) separating a pressure-generating liquid (10) and a drug solution (20}
Data Source
AI summary
The present disclosure relates to a needleless syringe having a multi-nozzle which includes an upper housing defining a chamber for containing a pressure-generating liquid and including a pressure-generating unit at an upper portion of the upper housing, a lower housing configured to contain a drug solution and coupled to a lower portion of the upper housing, an elastic membrane disposed between the upper housing and the lower housing to separate the pressure-generating liquid from the drug solution, an outer chamber attached to a lower portion of the lower housing and having an insertion portion in fluid communication with an interior of the lower housing, an inner chamber inserted into the insertion portion, the inner chamber having a plurality of branch grooves on an outer surface of the inner chamber, and a plurality of injection nozzles coupled to a lower portion of the inner chamber.