Elastomeric Pump Housing Ultrasonic Welding Assembly
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Solution Overview
Problem
Existing portable infusion devices for medical solutions, particularly elastomeric pumps, are cumbersome to assemble due to the need for multiple gluing or welding steps, which complicates the construction process and increases costs.
Innovation Solution
The infusion device assembly features a housing composed of two half-shells that sealingly couple to an elastomeric pump, cannula, and filling valve, simplifying assembly through ultrasonic welding and eliminating the need for extensive gluing or welding, ensuring a reliable and low-cost solution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional assembly methods with multiple gluing or welding steps are used, then reliable connections are achieved, but assembly complexity and manufacturing time increase
Solution Approach 1:
The housing half-shells are designed to simultaneously accommodate and seal multiple components (elastomeric pump, cannula, filling valve) through a single integrated sealing structure, merging multiple connection functions into one assembly operation
Solution Approach 2:
The housing half-shells serve multiple functions: structural enclosure, sealing, and component integration, eliminating the need for separate connection mechanisms for each component
2Reliability
If traditional assembly methods with multiple gluing or welding steps are used, then reliable connections are achieved, but manufacturing costs increase
Solution Approach 1:
Multiple connection operations are consolidated into a single housing assembly step, reducing the number of manufacturing processes required and lowering overall production costs
Solution Approach 2:
The complex connection processes (gluing, welding) are extracted from the assembly steps and replaced by the inherent sealing capability of the housing structure itself
3Strength
If extensive gluing or welding is used, then secure component attachment is achieved, but assembly time increases
Solution Approach 1:
The housing is divided into two separable half-shells that can be independently prepared and then quickly assembled, enabling parallel preparation of components before final assembly
Solution Approach 2:
Components are pre-positioned within the housing structure during mold assembly, so that final assembly requires only closing the half-shells rather than performing multiple attachment operations
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
This design significantly simplifies the assembly process, reduces costs, and ensures a compact, reliable, and low-cost infusion device while maintaining high safety standards and precision in medical solution delivery.
Implementation Method 1
simplifying assembly through ultrasonic welding
Data Source
AI summary
A device is for the infusion of medical solutions containing drugs or other physiologically useful substances. The medical solution infusion device assembly includes an infusion device and a housing containing it. The infusion device includes an elastomeric pump having a closed end and an open end, a cannula and a filling valve configured to fill the elastomeric pump with a medical solution. The housing of the infusion device has a first half-shell and a second half-shell, configured to be sealingly coupled to each other and to the infusion device. The sealed coupling with the infusion device is arranged in a position adjacent to the open end of the elastomeric pump.