Disposable bedpan with lid
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Solution Overview
Problem
Existing disposable bedpans with lids lack efficient sealing mechanisms and are not designed for easy stacking, weight support, and economical manufacturing, making them inefficient for use, transportation, and storage.
Innovation Solution
A disposable bedpan with a hinged cover and lid that seals using a U-shaped ridge and panel locking protrusions, allowing for single-use functionality, stackability, and weight support without requiring special tools, constructed from biodegradable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing disposable bedpans with lids are designed with simple structures, then manufacturing cost is reduced, but sealing effectiveness deteriorates
Solution Approach 1:
The bedpan is divided into multiple functional segments: a base pan, a hinged cover with U-shaped ridge for sealing, and a separate lid with locking protrusions. This segmentation allows each component to be optimized for its specific function while maintaining overall manufacturing simplicity and cost-effectiveness.
Solution Approach 2:
The lid nests within the cover structure, with locking protrusions that engage with corresponding features on the cover. This nested design provides effective sealing and stacking capability without adding significant manufacturing complexity, as both components are molded from the same biodegradable material.
2Productivity
If bedpans are designed for stacking, then storage efficiency is improved, but structural strength deteriorates
Solution Approach 1:
The bedpan design creates equipotential stacking surfaces where the lid of one bedpan fits into the base of another, distributing weight evenly across multiple units. This allows vertical stacking without creating stress concentration points that would compromise structural integrity.
Solution Approach 2:
The stacking mechanism utilizes the vertical dimension by designing interlocking features between the lid and base of adjacent bedpans. This vertical integration allows multiple units to be stacked efficiently while maintaining structural strength through distributed load bearing across the stacking interface.
3Strength
If bedpans are designed with weight support capability, then user comfort is improved, but device complexity increases
Solution Approach 1:
The lateral supports are designed with tapered geometry, being thicker at the base and thinner toward the top ridge. This local variation in material distribution provides maximum strength where weight support is needed (at the base) while reducing material usage and overall complexity in areas where less strength is required.
Solution Approach 2:
The entire bedpan assembly including base, cover, and lid is constructed from a single biodegradable plastic material molded in one or more pieces. This composite approach provides sufficient weight support capability while avoiding the complexity of assembling multiple different materials or components.
4Reliability
If bedpans are made disposable, then sanitation is improved, but environmental impact worsens
Solution Approach 1:
The bedpan is designed as a single-use disposable product made from biodegradable plastic material. This allows complete sanitation after each use without cleaning or sterilization, while the biodegradable nature ensures minimal environmental impact when the product is discarded, as it will decompose naturally in the environment.
Data Source
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AI summary
A disposable bedpan with lid, having a bedpan with a base and a sidewall having at least one lateral support. The bedpan further has a top ridge and a front ridge. The bedpan further has a front top cavity defined between the top ridge and the front ridge. A cover has a cover base and a u-shaped cover base ridge, which is inserted into the front top cavity when the cover mounts upon the bedpan. The cover is connected to the bedpan by a hinge. A lid has a lid panel and is connected to the bedpan by a lid hinge. Disposable bedpan with lid is stackable upon one another. The disposable bedpan with lid collects waste.