Adhesive Film Perforator for Safe Liquid Sampling
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Solution Overview
Problem
Existing methods for collecting samples from flexible closed containers like urine or blood bags are risky due to the potential for needle puncture and contamination, and lack a non-traumatic, cost-effective solution for creating a precise and clean opening.
Innovation Solution
A device with two adhesive sections and a film perforating element that securely adheres to the bag, allowing the film to be perforated without a needle, creating a sealed opening for sample access and collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a needle is used to pierce the bag wall, then sample access is achieved, but trauma and contamination risk increase
Solution Approach 1:
The invention extracts the harmful needle component from the sampling device, retaining only the essential perforating function through a film perforating element that creates openings without causing trauma or contamination risk to the operator
Solution Approach 2:
The film perforating element acts as an intermediary between the operator and the liquid sample, creating controlled openings in the bag wall through adhesive bonding and mechanical penetration without requiring a needle, thus eliminating trauma and contamination risks
2Ease of operation
If a needle is used to pierce the bag wall, then sample access is achieved, but device complexity and cost increase
Solution Approach 1:
The invention removes the complex needle-syringe assembly and replaces it with a simplified film perforating element that integrates directly into the sampling device structure, reducing device complexity and cost while maintaining sample access capability
Solution Approach 2:
The film perforating element serves multiple functions: it creates openings in the bag wall, provides a sealing surface for adhesive bonding, and acts as a structural component of the sampling device, eliminating the need for separate needle and syringe components
3Reliability
If adhesive surfaces are used to seal the bag, then sealing reliability is improved, but device complexity increases
Solution Approach 1:
The invention merges the adhesive sealing function with the structural components of the sampling device, integrating adhesive surfaces into the walls and base of the sampling chamber rather than using separate sealing elements, thus improving sealing reliability without significantly increasing device complexity
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
Enables safe, efficient, and clean sampling and emptying of flexible bags by creating a precise opening without contamination or leakage, using adhesive surfaces and a film perforating element to access the contents without needles.
Implementation Method 1
The two sections are then moved towards each other. The bonding of one wall of the bag with the second section of the device is first of all obtained by the adhesive surface of the second section
Data Source
Figure 1~2
Figure 3~4
AI summary
The application relates to taking a sample of liquid contained in a flexible closed container, for example, a bag for collecting urine or blood. The problem to be resolved relates to piercing the wall of the container with a non- cutting piece, whilst obtaining a precise and clean opening for accessing the liquid and preventing any unintended flow or spill of liquid. The problem is solved according to the present invention by a device for taking a sample of liquid contained in a flexible bag (13, 14), which is characterised in that the device comprises a first section (20) having a base surface (21) and a film perforating element (22) protruding from the base surface (21). The device according to the invention further comprises a second section (23) having a base surface (24) surrounding a cavity (25), which is adapted for receiving the film perforating element (22) of the first section (20). The first section (20) has an adhesive surface surrounding the film perforating element (22), and the second section (23) has an adhesive surface surrounding the cavity (25). Furthermore, one of the two sections (20, 23) comprises an opening (26) in the base surface, inside of the adhesive surface (21).