Medicinal Liquid Pushing Apparatus with Elastic Pressing Member
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Solution Overview
Problem
Conventional medicinal liquid supply control apparatuses require continuous user intervention for bolus injections, leading to inconvenience, incomplete medication, and potential for excessive dosing, with fixed storage capacity limiting differential dose adjustments based on patient condition.
Innovation Solution
A medicinal liquid control apparatus featuring a reservoir with a movable pushing member and a button mechanism allowing for automatic initiation and completion of bolus injections, along with a selector to adjust storage volume and channel control valves for precise dose management and air filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user continuously presses the injection button for bolus injection, then the bolus injection can be initiated, but the operation becomes inconvenient and incomplete injection may occur
Solution Approach 1:
The pressing member is designed to automatically return to its initial position after being pushed, enabling the system to complete the injection cycle without continuous user intervention. The elastic member provides the self-returning force that automatically resets the mechanism after each push, making the system self-servicing.
Solution Approach 2:
The pressing member is preliminarily positioned by the user's single push action, and the elastic member stores energy in advance to automatically complete the remaining injection process. This preliminary positioning followed by automatic execution resolves the need for continuous pressing.
2Ease of operation
If the pressing member is made flexible to enable automatic return, then ease of operation improves, but control precision over injection force may deteriorate
Solution Approach 1:
The elastic member's material properties and geometric parameters are specifically selected and configured to provide the appropriate force characteristics. By changing the elastic parameters (material selection, dimensions), the system achieves both automatic return capability and controlled injection force precision.
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 convenient, complete, and adjustable medicinal liquid delivery without continuous user input, preventing excessive dosing and allowing differential dose adjustments, while ensuring reliable and safe flow control.
Implementation Method 1
a lower end of the pressing member presses the reservoir pushing member downward while the pressing member is compressively and elastically deformed in an upper-lower direction when an upper end of the pressing member is pushed downward by the button member
Data Source
AI summary
A medicinal liquid pushing apparatus according to an embodiment of the present disclosure has a medicinal liquid channel that guides a flow of a medicinal liquid. The medicinal liquid pushing apparatus includes: a reservoir defining an internal space configured to store a medicinal liquid on the medicinal liquid channel; a reservoir pushing member configured to press the reservoir downward; a button member disposed to be spaced apart upward from the reservoir pushing member and configured to be movable downward; and a pressing member disposed between the button member and the reservoir pushing member and configured such that a lower end of the pressing member presses the reservoir pushing member downward while the pressing member is compressively and elastically deformed in an upper-lower direction when an upper end of the pressing member is pushed downward by the button member.