Medical Device Packaging with Negative Pressure Fixation
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Solution Overview
Problem
Existing medical device packaging methods fail to stably fix medical devices during transport, leading to vibration and potential damage, and lack easy openability, with vacuum bags experiencing pressure instability and material degradation issues.
Innovation Solution
A packaged medical device configuration featuring a container with a flange portion and a gas impermeable lid member heat-sealed to it, creating a negative pressure environment inside the container to stabilize the medical devices, with a peelable adhesive layer and optional gas permeable film to ensure secure fixation and easy opening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vacuum bag is used to fix medical devices in a container, then the medical devices are fixed and vibration during conveyance is reduced, but it is difficult to adjust the pressure in the vacuum bag, so the fixed states of the medical devices vary and the fixation lacks stability
Solution Approach 1:
The patent changes the pressure parameter inside the container to a negative pressure state (vacuum state), which causes the lid member to bend toward the inside of the container and press the medical devices, achieving stable fixation without requiring complex pressure adjustment mechanisms
Solution Approach 2:
The lid member is designed to be flexible and bendable, allowing it to dynamically adjust its shape in response to the negative pressure environment, automatically adapting to different container sizes and medical device configurations to maintain stable fixation
2Reliability
If the lid member is firmly heat-sealed to the flange portion to stabilize the medical devices, then strong external force is required for peeling the lid member, but this causes contents to jump out in opening
Solution Approach 1:
The lid member incorporates a gas impermeable film with specific local properties that provide both strong adhesion to the flange portion for stable fixation and controlled peeling characteristics for easy opening, achieving both reliability and ease of operation through localized material properties
Solution Approach 2:
The lid member is pre-designed with specific adhesive properties and structural features that enable it to be firmly attached during sealing but allow for controlled separation during opening, preparing the system in advance for both fixation and easy opening requirements
3Reliability
If a gas impermeable film is used to seal the container opening, then the medical devices are fixed by the bent lid member in negative pressure, but the peel strength to the flange portion must be precisely controlled to ensure easy opening without content spillage
Solution Approach 1:
The lid member is constructed as a composite structure combining a gas impermeable film with specific adhesive layers and structural components, where each layer contributes to the overall peel strength characteristics, allowing for controlled adhesion that ensures both stable fixation and easy opening without requiring high manufacturing precision
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 stable fixation of medical devices during transport, reduces the risk of damage and material degradation, and allows for easy opening while maintaining a sterile environment.
Implementation Method 1
a lid member having a gas impermeable film and peelably heat-sealed to the flange portion
Implementation Method 2
the inside of the container is set to a negative pressure to the atmospheric pressure so that the medical device is pressed by the lid member
Implementation Method 3
a lid member having a gas impermeable film
Data Source
AI summary
To provide a packaged medical device in which a medical device in a container is stably fixed and which can be easily opened. Specifically, provided is a packaged medical device comprising a container having an opening portion and a flange portion formed to extend outward in a peripheral portion of the opening portion, a medical device housed inside the container, and a lid member having a gas impermeable film and peelably heat-sealed to the flange portion, in which the inside of the container is set to a negative pressure to the atmospheric pressure so that the medical device is pressed by the lid member and the peel strength to the flange portion of the lid member is 2 to 50 N/in.