Needleless Injection Jet Pressure Measurement with Inclined Receiving Faces
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Solution Overview
Problem
Existing needle-free injection devices lack a reliable method to control the pressure or injection force of multiple jets independently, which is crucial for ensuring consistent and effective delivery of active ingredients.
Innovation Solution
A device with individual pressure or injection force measuring elements, each with an inclined receiving face, is used to measure the pressure or force of each jet independently, minimizing interference and ensuring accurate measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single control device is used for multiple jets, then the device complexity is reduced, but the measurement precision of each jet's pressure cannot be ensured
Solution Approach 1:
The patent divides the control device into multiple independent measurement elements, each dedicated to measuring the pressure of a specific jet. This segmentation allows each element to accurately measure its corresponding jet's pressure without interference from other jets, thereby maintaining high measurement precision while managing device complexity through modular design.
2Ease of manufacture
If receiving faces are oriented orthogonally to injection direction, then the measurement setup is simplified, but neighboring jets interfere with each other's measurement
Solution Approach 1:
The patent introduces asymmetry in the orientation of receiving faces relative to the injection direction. By angling the receiving faces at specific non-orthogonal angles, the design prevents neighboring jets from directly impinging on each other's measurement surfaces, thereby eliminating cross-interference and ensuring reliable pressure measurements for each jet.
3Reliability
If individual measuring elements are used for each jet, then the reliability of injection channel identification is improved, but the device complexity increases
Solution Approach 1:
The patent implements a feedback mechanism where each individual measuring element provides real-time pressure data for its corresponding jet. This feedback allows the system to immediately identify when a jet's pressure deviates from expected parameters, enabling reliable detection of injection channel failures. The modular structure of individual measuring elements makes the increased complexity manageable and scalable.
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
Enables identification of failed injection channels and guarantees the conformity of needle-free injection devices by ensuring each jet meets predetermined pressure or force criteria, improving manufacturing quality control.
Implementation Method 1
an element for measuring the pressure or alternatively the injection force of the corresponding jet, each element for measuring the pressure or alternatively the injection force comprising a receiving face for the corresponding jet oriented to receive this jet
Data Source
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AI summary
The invention concerns a device for controlling the pressure or alternatively the injection force (1) of a plurality of jets generated by channels (25a) at the outlet of a nozzle (25) of a needleless injection device (2), characterised in that the device for controlling the pressure or alternatively the injection force (1) comprises, for each jet generated at the outlet of the nozzle (25), a measurement element (10) for measuring the pressure or alternatively the injection force of the corresponding jet, each element (10) for measuring the pressure or alternatively the injection force comprising a receiving face (10a) for receiving the corresponding jet oriented in order to receive this jet.