Patch Injection Pump Layout for Insertion Tube Stability
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Solution Overview
Problem
Existing insulin pumps fail to address the challenge of maintaining the stability of the insertion tube during external impacts, thereby enabling a stable injection of a drug into the body, even in the presence of user movement or external impacts.
Innovation Solution
A drug injection device with a central injection assembly, where the drug reservoir, pump assembly, and circuit unit are disposed to surround the injection assembly, reducing the overall thickness and enhancing stability during user movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the injection assembly is disposed at a central region of the mounting space, then the insertion tube remains stable during user movement or external impact, but the device structure becomes more complex
Solution Approach 1:
The patent applies asymmetry by positioning the injection assembly at the central region of the mounting space rather than distributing components symmetrically. This central positioning creates an asymmetric layout where the injection assembly is surrounded by the drug reservoir, pump assembly, and circuit unit, which are disposed at non-central positions. This asymmetric arrangement optimizes the stability of the insertion tube during user movement while maintaining a compact overall structure.
2Volume of moving object
If the drug reservoir, pump assembly, and circuit unit are disposed to surround the injection assembly, then the overall thickness is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent implements the nesting principle by arranging the drug reservoir, pump assembly, and circuit unit to surround the centrally positioned injection assembly within the mounting space. This nested configuration allows components to be packed efficiently in a radial pattern around the central injection assembly, minimizing the overall thickness of the device while maintaining proper spacing and connections between components.
Data Source
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AI summary
A patch-type drug injection pump according to an embodiment of the present disclosure includes: a housing including a lid and a contact surface; and components disposed in a mounting space between the lid and the contact surface. The components include: a drug reservoir in which a drug to be injected is stored; a pump assembly configured to be driven to transfer the drug in the drug reservoir toward an injection target; a circuit unit equipped with electronic components necessary for driving and controlling the pump; and an injection assembly equipped with an insertion tube to be inserted into the injection target. The injection assembly is disposed at a central region of the mounting space. Further, the drug reservoir, the pump assembly, and the circuit unit are disposed to surround the injection assembly.