Breast Pump Adapter Spherical Membrane Pressure Drop

The patent applies spherical cap geometry to both the chamber and the media separation membrane. The membrane is shaped as a spherical cap that fits into a spherical cap-shaped chamber, providing inherent structural support that prevents collapse while maintaining flexibility. The curved spherical geometry distributes mechanical stresses evenly across the membrane surface, enabling it to maintain its shape during the pumping cycle without requiring additional support structures.

The patent employs a thin, flexible media separation membrane made of elastomeric material that forms a spherical cap shape. This flexible shell structure maintains its shape through its geometric configuration rather than through stiffness, allowing it to transmit pressure efficiently while remaining compliant. The membrane's flexibility enables it to conform to the spherical cap chamber geometry, creating an optimal pressure transmission path with minimal resistance.

The spherical cap geometry of the thin membrane provides structural strength through its curved shape, which distributes mechanical loads evenly across the surface. This geometric reinforcement allows the use of very thin membrane material (0.5-2 mm thickness) while maintaining adequate strength and resistance to damage. The curved spherical shape resists external pressures without requiring thick material, enabling the membrane to remain both thin and durable simultaneously.