Infusion Transfer System Ventilation Closure Element
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Solution Overview
Problem
Existing medical infusion systems are not cost-effective and user-friendly for both ventilated and non-ventilated infusion therapies, as they require complex manufacturing processes and safety concerns due to the lack of a simple and efficient mechanism to control ventilation.
Innovation Solution
A closure element designed as a tear-off body is integrated into the transfer system, allowing for easy blocking or opening of the ventilation channel, enabling both ventilated and non-ventilated infusion therapies. This closure element is produced in a single-stage plastic injection molding process and can be detached from the functional part, providing a protective cap for the puncturing spike that can be axially plugged or snapped onto the spike, ensuring safe and efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate closure element for the ventilation channel is provided, then the system can switch between ventilated and non-ventilated infusion therapy, but the device complexity increases
Solution Approach 1:
The closure element for the ventilation channel is integrated into the protective cap as a single molded component. The protective cap serves dual functions: protecting the puncturing spike during storage/transport and providing the closure mechanism for the ventilation channel. This merging of functions reduces the number of separate components while maintaining the ability to switch between ventilated and non-ventilated infusion therapy modes.
Solution Approach 2:
The protective cap is designed as a multi-functional component that combines the protective function (covering the puncturing spike) with the ventilation control function (closure element). This universal design allows a single component to perform multiple tasks, thereby reducing overall device complexity while achieving versatility in infusion therapy options.
2Reliability
If a complex mechanism is used to control the ventilation channel, then reliable switching between ventilated and non-ventilated therapy is achieved, but the ease of operation decreases
Solution Approach 1:
The closure element is pre-positioned within the protective cap in a ready-to-use state. The closure mechanism is pre-assembled and integrated during manufacturing, so that during operation, the user simply needs to remove or manipulate the protective cap to achieve the desired ventilation state. This preliminary preparation eliminates complex operational steps while ensuring reliable switching between modes.
Solution Approach 2:
The closure function is extracted as a distinct element (closure element) that can be independently manipulated by removing the protective cap. This separation of the closure function from the protective function allows simple, intuitive operation - the user removes the protective cap to access the puncturing spike, and in doing so, automatically activates the appropriate ventilation state through the integrated closure element design.
3Ease of manufacture
If multiple separate components are used for the protective cap and closure element, then manufacturing flexibility is improved, but the manufacturing cost increases
Solution Approach 1:
The protective cap and closure element are combined into a single molded part manufactured in one injection molding process. This integration reduces the total number of parts from two separate components to one, simplifying manufacturing operations, reducing assembly steps, and lowering overall production costs while maintaining the functional capabilities of both the protective cap and closure element.
Data Source
Figure 1
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AI summary
1. Transfer system for a medical infusion system 2.1 A transfer system with several functional parts, comprising a piercing part with a piercing pin, which has a fluid channel and a ventilation channel opening into a ventilation outlet on the outside of the piercing part, which is provided with an air filter element, is known. 2.2 According to the invention, a closure element for the ventilation channel is provided, which is integrally formed as a tear-off element on a functional part. 2.3 Application for medical infusion therapy