Dose Dial Button Plate for Stable Drug Injector Operation
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Solution Overview
Problem
Existing drug injectors require specialized skills for use and lack user-friendly features for dose setting and delivery confirmation, with a need for improved stability and simplicity in operation.
Innovation Solution
A drug injection control device with a button plate positioned in the dose dial, allowing a stable linear motion of the injection button, and incorporating a torsion spring mechanism for dose setting and drug delivery through a rotatable dose dial.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the injection button is positioned directly in the dose dial without a button plate, then the device structure is simpler, but the injection button operation becomes unstable and unreliable
Solution Approach 1:
A button plate is introduced as an intermediary component between the dose dial and the injection button. The button plate serves as a mediator that receives the rotational motion from the dose dial and converts it into stable linear motion for the injection button, ensuring reliable operation while maintaining structural integrity.
Solution Approach 2:
The device is segmented into distinct functional components: the dose dial for dose selection, the button plate for motion conversion and support, and the injection button for drug delivery. This segmentation allows each component to perform its specific function optimally while maintaining overall system reliability.
2Ease of operation
If a button plate is added to support the injection button, then the injection button operation becomes stable, but the manufacturing complexity increases
Solution Approach 1:
The button plate is integrated with the dose dial structure, merging two components into a unified assembly. This integration simplifies manufacturing by reducing the number of separate parts and assembly steps while maintaining the functional benefits of the button plate for stable injection button operation.
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 stable and user-friendly drug injection with simplified dose setting and delivery confirmation, enhancing usability and reducing manufacturing complexity.
Implementation Method 1
an injection amount setting module 100 to set an amount of the drug to be injected by storing a twisting moment in a torsion spring 140 positioned in the housing 10
Data Source
AI summary
A drug injection control device has a structure in which a rod lock screw-coupled to an outer circumferential surface of a piston rod can only make a linear motion under restricted rotation in a rod holder with the rotation of a rod guide and the sub-linear motion of the piston rod. When an injection amount of drug is preset through an injection amount setting module configured to make a rotational motion with a dose dial in a housing to set the amount of drug to be injected by storing the twisting moment in a torsion spring, a button plate is fixed and positioned in the dose dial to perform a function of supporting a button spring, and an injection button is slidably coupled through the button plate, so the injection button rotates simultaneously with the rotation of the dose dial, but allows a stable pushing operation through the button plate.