Infusion Pouch with Nested Vial and Sealing Membrane
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Solution Overview
Problem
Existing infusion pouch sets with built-in vial functions face issues of complex components, poor sealability, and storage difficulties due to external vial attachments, leading to potential mixing of medicines upon impact.
Innovation Solution
An infusion pouch set with a built-in injection medicine bottle featuring a vertically fixed injection needle, a sealing membrane, and a movable packing holder, where the outer cap is screw-connected to the inner cap, allowing the injection needle to automatically puncture the sealing membrane and mix with the infusion solution, ensuring hygiene, ease of use, and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the vial is attached to the outside of the infusion container, then the injection medicine bottle can be accessed, but storage is poor, packaging is difficult, and upon impact the vial medicines can be unintentionally mixed
Solution Approach 1:
The injection medicine bottle is nested inside the infusion container body, specifically within the inner cap structure. The vial is positioned inside the inner cap such that it is protected during storage and transport, while still being accessible for injection through the sealing membrane. This nesting arrangement solves the contradiction by providing both protection (reliability) and accessibility (ease of operation) through the integrated design where the vial resides within the container's cap structure rather than being externally attached.
2Reliability
If a protection cap with fixed and movable caps is used, then the drug container is protected, but the configuration is complicated and sealability is poor
Solution Approach 1:
The invention merges the protection cap functionality with the inner cap structure. The inner cap itself serves as the protective element for the injection medicine bottle, eliminating the need for separate fixed and movable caps. The sealing membrane integrated into the inner cap provides both protection and sealing functionality in a single component, reducing complexity while maintaining reliability.
Solution Approach 2:
The inner cap is designed to perform multiple functions: it protects the injection medicine bottle, provides sealing through the integrated sealing membrane, and allows for injection access. This multi-functional design eliminates the need for multiple separate components (fixed cap, movable cap, separate sealing elements), thereby reducing device complexity while maintaining comprehensive protection.
3Ease of operation
If a two-way injection needle punctures both solution container and drug container, then injection is enabled, but numerous parts are required and sealability is difficult to ensure
Solution Approach 1:
The invention extracts the sealing membrane as a separate, integrated element within the inner cap structure. This sealing membrane is specifically designed to be punctured by the injection needle while maintaining the seal of the rest of the system. By separating the sealing function into this dedicated membrane element, the design reduces overall complexity and makes sealability easier to ensure while maintaining injection functionality.
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
The solution provides a hygienic, user-friendly, and safe method for mixing infusion solutions by eliminating the need for manual needle manipulation and enhancing sealability, while preventing external contamination and damage to the sealing membrane.
Implementation Method 1
the injection needle punctures the sealing membrane and the injection solution is automatically mixed with the contents of the infusion container
Implementation Method 2
an outer cap which is screw-connected to the inner cap
Data Source
AI summary
An infusion pouch set with a built-in injection medicine bottle having a vial function including: a discharge port 20 provided at an outlet 12 of a pouch container 10; and an injection port 30 provided at an inlet 14 of the pouch container 10; wherein the injection port 30 comprises, an injection needle part 40 configured to have an injection needle 44 provided vertically on an upper part of an injection needle holder 42 which is welded to the inlet 14 of the pouch container 10; an inner cap 50 having a sealing membrane 52 which is coupled to the injection needle holder 42 of the injection needle part 40, accommodates the injection needle 44 therein, and is punctured by the injection needle 44 when lowered; an outer cap 60 which is vertically moveable along the same axis as the inner cap 50 and accommodates an injection medicine bottle 70 in an upside down state therein; and a packing holder 90 which is vertically movably coupled at an upper part of the sealing membrane 52 of the inner cap 50, and a lower part of the packing holder 90 accommodates a packing 80 which hermetically couples an inlet cover 72 with the sealing membrane 52 and has a vertical through-hole 82 at its center.