Spring-Loaded Needle Holder for Instant Injection
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Solution Overview
Problem
Liquid medicine injection devices cause pain and fear due to the insertion of needles, leading to patient objection and difficulty in administering medicine over a long period.
Innovation Solution
A liquid medicine injection device design featuring a button and needle holder mechanism where the needle is instantly inserted using the elasticity of a spring, minimizing pain and fear by allowing quick and smooth insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the needle is inserted slowly or manually, then the patient can feel control and reduce fear, but the insertion time is prolonged and pain is increased
Solution Approach 1:
The needle is pre-loaded in the needle holder and the spring is pre-compressed, ready to execute insertion instantly when the button is pressed. All preparation is done beforehand, enabling rapid deployment without delay
Solution Approach 2:
The spring mechanism propels the needle holder to move rapidly through the insertion distance, completing the action in minimal time. The harmful insertion process is rushed through quickly rather than prolonged
2Object-affected harmful factors
If the needle insertion is made rapid and smooth, then patient pain and fear are minimized, but the device complexity increases due to spring mechanism
Solution Approach 1:
The spring mechanism is self-contained within the needle holder assembly and automatically executes the insertion action without requiring external power sources, motors, or complex control systems. The system serves itself through elastic potential energy
Solution Approach 2:
The complex motorized insertion mechanisms found in other devices are extracted and replaced with a simple spring-based system. Only the essential function remains, eliminating unnecessary complexity while achieving the desired rapid insertion
3Ease of operation
If the needle holder is designed with support portions and guiding members for smooth movement, then insertion smoothness is improved, but the device complexity increases
Solution Approach 1:
The guiding member acts as an intermediary between the needle holder and the device housing, providing a simple track or groove that guides the needle holder's movement path. This intermediate structure ensures smooth motion without requiring complex mechanical linkages
Solution Approach 2:
The support portions are divided into distinct segments (first support portion and second support portion) that can be independently positioned on the guiding member. This segmentation allows for simplified manufacturing and assembly while maintaining the smooth guidance function
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 instant insertion of the needle reduces patient discomfort and fear, making it easier to administer medicine over an extended period, thereby enhancing patient health and treatment compliance.
Implementation Method 1
since the needle holder may be immediately slid by using the elasticity of the spring
Data Source
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AI summary
Provided is a liquid medicine injection device having a needle holder slid immediately by using the elasticity of a spring such that a needle installed at the needle holder may be instantly inserted into a patient.