Urine Absorbent Bag C-Shape Multilayer Structure
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Solution Overview
Problem
Existing urine absorbent bags for male patients with light incontinence, such as senile incontinence, are not wearable in a simple, adaptable, and reliable manner, and they do not efficiently absorb urine leakage, while also being bulky, uncomfortable, and costly to manufacture.
Innovation Solution
A urine absorbent bag with a planar multilayer structure folded in a 'C'-shape, featuring an inner layer, an intermediate distribution layer, and an absorbent core with superabsorbent polymer powder trapped between cellulosic films, designed to absorb and retain fluids efficiently, and a breathable outer layer for comfort and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional absorbent diapers are used for male patients with light incontinence, then urine leakage can be absorbed, but the device becomes bulky and uncomfortable
Solution Approach 1:
The absorbent core is divided into multiple layers with different absorption characteristics: a first absorbent layer in contact with the penis, a second absorbent layer in contact with the first layer, and a third absorbent layer in contact with the second layer. This segmentation allows each layer to handle specific absorption tasks, improving overall absorption reliability while maintaining a compact structure that reduces bulk.
Solution Approach 2:
The absorbent layers are nested within each other in a concentric arrangement, with each layer surrounding the previous one. This nested structure maximizes absorption capacity within a minimal volume, allowing multiple absorption functions to be packed into a compact configuration that prevents bulkiness.
2Reliability
If prior art sanitary bags are used, then urine absorption is attempted, but the device is not wearable in a simple, adaptable, and reliable way
Solution Approach 1:
The bag incorporates an elastic band that can dynamically adjust to different user anatomies and wear preferences. The elastic band can be positioned at different locations and tensions, allowing the device to adapt to various users while maintaining reliable urine absorption through consistent contact pressure.
Solution Approach 2:
The device allows users to modify parameters such as the position, tension, and configuration of the elastic band to suit their individual needs. This parameter adjustability enhances wearability and comfort while maintaining the reliability of urine absorption through optimized contact between the absorbent layers and the penis.
3Reliability
If prior art sanitary bags are used, then urine absorption is attempted, but the device is not simple and inexpensive to manufacture
Solution Approach 1:
Different absorbent materials are applied locally to different layers based on specific functional requirements. The first layer uses a material optimized for direct skin contact and rapid absorption, while subsequent layers use materials optimized for bulk fluid absorption. This localized material selection improves absorption reliability while controlling manufacturing costs by using materials efficiently rather than uniformly.
Solution Approach 2:
The device employs composite absorbent structures combining different materials with complementary properties in each layer. This composite approach enhances overall absorption performance and reliability while managing manufacturing costs through the strategic selection and combination of cost-effective materials with appropriate functional characteristics.
4Adaptability or versatility
If a planar multilayer structure is folded in C-shape, then the bag fits the penis anatomy, but the structure becomes more complex
Solution Approach 1:
The planar multilayer structure is folded into a three-dimensional C-shape configuration that conforms to the penis anatomy. This dimensional transformation from 2D to 3D allows the flat absorbent layers to wrap around and contact the penis surface area, enhancing anatomical adaptability while the folding process itself creates the necessary three-dimensional form without requiring additional complex components.
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 simple, adaptable, and reliable means to absorb urine leakage efficiently, while being inexpensive to manufacture, ensuring comfort and effective fluid management.
Implementation Method 1
an absorbent core interposed between the inner layer and the outer layer, wherein the absorbent core is configured to absorb and retain fluid
Implementation Method 2
an absorbent core made of at least one absorbent powder, optionally a superabsorbent polymer powder or SAP, trapped between two films of cellulosic material
Data Source
Figure 1~10a
Figure 4a~12a
Figure 10b~12b
AI summary
Urine absorbent bag configured to house a penis of a user, having a planar multilayer structure (100) folded in "C"-shape to form said absorbent bag having a longitudinal axis (110), wherein said absorbent bag has a top opening (120), configured to receive the penis of the user, that is defined by a top edge (125) of the planar multilayer structure (100), wherein said absorbent bag further has a closed bottom (130) defined by a bottom edge (135) of the planar multilayer structure (100), whereby a first lateral portion (151) of the planar multilayer structure (100) is overlapping a central portion (150) of the planar multilayer structure (100) so that a first lateral edge (140) thereof is placed below a second lateral edge (152) of the planar multilayer structure (100), wherein the planar multilayer structure (100) comprises an inner layer (300) configured to come into contact with the penis of the user, an outer layer (330) and an absorbent core interposed between the inner layer (300) and the outer layer (330), wherein the absorbent core is configured to absorb and retain fluid, wherein an end portion (147) of a second lateral edge (145) of the planar multilayer structure (100), longitudinally extending from the bottom edge (135) to a length not greater than 50% of the length of the second lateral edge (145), is permanently coupled onto the first lateral portion (151).