Asymmetrical Menstrual Cup with Elongated Removal Stem
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Solution Overview
Problem
Traditional menstrual cups often cause discomfort and leakage due to symmetrical shape, require two hands for insertion and removal, and necessitate excessive skin contact, which can be messy and unhygienic, especially when access to clean water is limited.
Innovation Solution
An asymmetrical menstrual device with an elongated removal stem and pressure points allows for one-handed insertion and removal, reducing skin contact and the risk of leakage, featuring a unique upper ring design that minimizes pressure on sensitive areas and adapts to individual anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a symmetrical menstrual cup design is used, then the device structure is simple and easy to manufacture, but it causes discomfort and leakage during insertion and removal
Solution Approach 1:
The patent applies asymmetry by designing the menstrual cup with an asymmetrical upper ring where the front portion has a different configuration than the back portion. Specifically, the front upper ring has a smaller diameter and different curvature compared to the back upper ring, allowing the device to be inserted with the front facing a specific direction and providing comfort during removal without requiring complex manufacturing processes.
2Reliability
If traditional menstrual cups are designed, then the device can collect menstrual fluid, but two hands are required for proper folding and insertion
Solution Approach 1:
The patent applies segmentation by incorporating a pre-formed fold or crease in the cup body that divides the device into manageable sections. This pre-segmentation allows the user to easily collapse the cup for insertion using one hand, as the fold provides a natural breaking point that guides the folding action without requiring complex two-handed manipulation.
Solution Approach 2:
The patent applies preliminary action by pre-forming the cup with an inherent fold structure or memory shape that automatically collapses when exposed to body temperature or moisture. This preliminary preparation of the folding mechanism eliminates the need for manual two-handed folding during insertion, as the cup self-collapses upon contact with the vaginal environment.
3Reliability
If traditional menstrual cups are used, then the device can be placed in the vaginal canal, but excessive skin contact is required which can be messy and unhygienic
Solution Approach 1:
The patent applies the intermediary principle by incorporating a removal stem or tail that extends from the base of the cup. This stem serves as an intermediary tool that allows the user to grasp and remove the cup without direct finger contact with the vaginal canal or the cup's inner surface, thereby reducing hygiene risks and messiness during removal and cleaning operations.
4Reliability
If the upper ring seal is made strong, then leakage is prevented, but discomfort and pain occur during removal
Solution Approach 1:
The patent applies asymmetry to the upper ring design where the front portion has a different configuration than the back portion. The front upper ring is designed with a smaller diameter and different curvature to reduce contact with sensitive anterior structures during removal, while the back upper ring maintains sufficient seal strength to prevent leakage. This asymmetrical design allows the strong seal to function during wear while minimizing discomfort during removal.
Data Source
AI summary
An asymmetrical menstrual device with functional pressure points that aid in the insertion, opening, and removal of the device and requires minimal contact with the device itself, as well as with the body while placing inside the vaginal canal. Major design elements support ease of placement and effective opening of the device to create a seal, while minimizing pressure in sensitive areas. Another design feature is the length, functionality, and malleability of the removal stem that can be adapted to any length up until the base of the device. These elements enable greater cleanliness, comfort, and overall ease of use.