Oval Tampon Assembly Sealing and Absorption

The patent changes the shape of the impervious membrane from circular to oval, creating asymmetry in the dimensions. The oval shape has a major axis and minor axis with different lengths, allowing better adaptation to the anatomical shape of the vaginal canal. This asymmetric geometry enables improved fit-up between the membrane edges and the vaginal canal walls, preventing fluid leakage while maintaining the fluid blocking capability.

The patent merges two distinct functional components: an absorbent material portion and an impervious membrane portion. The absorbent material (such as gauze, cotton, or foam) provides initial fluid absorption capacity, while the impervious membrane (made of materials like plastic, rubber, or latex) provides a barrier that prevents fluid passage once the absorbent material becomes saturated. This combination extends the duration of effective fluid management by providing both absorption and blocking functions.

The patent employs a flexible impervious membrane that can dynamically change its configuration. During insertion, the membrane can be folded or compressed to a smaller size for easy introduction into the vaginal canal. Once in place, the membrane expands or unfolds to achieve its full oval shape, creating an effective seal against the vaginal walls. This dynamic transformation simplifies the insertion process while maintaining sealing effectiveness.