Chemical Fluid Injection Device with Needle Insertion Verification
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Solution Overview
Problem
Chemical fluid injection devices, such as insulin injection devices, cause pain and fear due to needle insertion, leading to inaccurate administration and patient aversion.
Innovation Solution
A chemical fluid injection device with a needle holder driven by a spring, equipped with sensors and a controller to ensure proper needle insertion and alarm generation, minimizing pain and fear by momentary needle insertion and ensuring accurate injection timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a needle is inserted into the body for chemical fluid injection, then the chemical fluid can be delivered to the patient, but the patient experiences pain and fear
Solution Approach 1:
The needle is designed to be momentarily inserted into the patient's body and then quickly withdrawn. The needle holder rapidly moves the needle through the skin and immediately retracts it, minimizing the duration of pain and fear while still achieving the chemical fluid delivery objective
Solution Approach 2:
The sensor detects and confirms proper needle insertion before the chemical fluid injection begins. This preliminary verification ensures the needle is correctly positioned, allowing the injection to proceed smoothly and reducing patient anxiety about improper administration
2Ease of operation
If the patient is afraid of needle insertion, then they may not objectively check needle insertion depth, but they may still attempt injection
Solution Approach 1:
The sensor provides objective feedback to the controller about needle insertion status. The controller receives this feedback and can verify whether the needle is properly inserted before allowing injection to proceed, eliminating the need for the patient to subjectively assess insertion depth
Solution Approach 2:
The device performs self-verification of needle insertion through the sensor and controller system. The device automatically determines whether injection conditions are met without requiring the patient to manually check or judge the needle position, ensuring accurate verification while maintaining ease of operation
3Object-affected harmful factors
If the needle is momentarily inserted and quickly withdrawn, then patient pain and fear are minimized, but precise injection timing must be controlled
Solution Approach 1:
The sensor continuously monitors needle insertion status and provides real-time feedback to the controller. The controller uses this feedback to precisely control the timing of chemical fluid injection, ensuring injection occurs only when the needle is properly positioned and stops when withdrawal begins, achieving both patient comfort and injection precision
Solution Approach 2:
The mechanical needle holder system is replaced with an automated control system using sensors and controllers. This substitution eliminates the need for manual timing control and enables precise, automated coordination of needle movement and chemical fluid injection timing
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 reduces patient discomfort and fear, enabling precise and smooth administration of chemical fluids, ensuring the needle is sufficiently inserted for accurate delivery.
Implementation Method 1
a spring between the button and the needle holder
Data Source
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AI summary
Provided is a chemical fluid injection device configured to simply recognize whether a needle attached to a needle holder is inserted into a patient by sliding the needle holder at a time and sensing whether the needle holder is adjacent to a needle penetration hole.