Medical Compound Delivery System Link Motion Penetration
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Solution Overview
Problem
Existing medical and pharmaceutical delivery systems are complex and accident-sensitive due to their automatic extraction functions, which compromise reliability.
Innovation Solution
A delivery system featuring a container unit with a closure element and an extraction unit that includes a supporting element and a penetration element with a hollow needle, where the penetration element is movable relative to the supporting element along a longitudinal axis, utilizing a link motion mechanism to penetrate the closure element and facilitate the extraction of compounds without the need for automatic functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an automatic extraction function is implemented using a container-container arrangement, then the delivery function is automated, but the device complexity increases and reliability decreases
Solution Approach 1:
The patent removes the automatic extraction mechanism and outer container from the system, retaining only the essential components: inner container, closure element, and extraction unit. This extraction of unnecessary elements eliminates the complexity and reliability issues associated with automatic functions while preserving the core delivery capability.
Solution Approach 2:
Instead of using a complex automatic extraction mechanism, the patent inverts the approach by using a simple manual penetration action that triggers a passive extraction process. The extraction unit is designed to be activated by simple penetration rather than complex automation, reversing the conventional approach to achieve better reliability.
2Extent of automation
If a container-container arrangement is used to support automatic extraction, then automation is achieved, but the device complexity increases
Solution Approach 1:
The patent extracts and removes the outer container and automatic extraction mechanism, leaving only the essential inner container, closure element, and extraction unit. This reduction eliminates the complex container-container arrangement while preserving the functional essence of the delivery system.
Solution Approach 2:
The patent segments the delivery system into independent, simple components: inner container, closure element, and extraction unit. Each component performs a specific function and can be independently manufactured and assembled, reducing overall device complexity compared to an integrated automatic system.
3Reliability
If the penetration element moves in a predetermined way towards the container bottom, then the hollow needle penetrates the closure element effectively, but the link motion mechanism adds device complexity
Solution Approach 1:
The link motion mechanism acts as an intermediary that translates simple rotational input into the complex predetermined motion path required for effective penetration. This intermediary mechanism ensures reliable penetration while keeping the user interface simple, as the user only needs to rotate the extraction unit rather than manually guide the needle.
Data Source
AI summary
A delivery system for medical and pharmaceutical compounds includes a container, a closure element, a supporting element and a penetration element. The container contains the compounds and has a closed container bottom and an open second end. The closure element makes fluid-tight contact with the inner wall of the container. The supporting element attaches to the closure element. The penetration element has a hollow needle and moves along the longitudinal axis of the container. The penetration element includes a first link motion portion, and the supporting element includes a second link motion portion. The first link motion portion has a guiding groove, and the second link motion portion has a projection. The hollow needle of the penetration element moves towards the container bottom and penetrates the closure element. The penetration element moves inside the supporting element towards the container bottom based on how the projection travels in the guiding groove.