Polygonal Base Suction Device for Pipette Stability

The suction device base element is designed with a polygonal shape (triangle, square, rectangle, or pentagon) instead of a circular shape. This asymmetric geometry prevents the pipette from rolling when placed on a flat surface, as the polygonal base creates stable flat contact areas. The asymmetric design directly resolves the contradiction by maintaining structural simplicity while eliminating the rolling problem that causes pipette breakage.

The suction device body is constructed from flexible material such as silicone rubber or elastomer. This flexible shell allows the user to compress the body to reduce internal volume, generating negative pressure (suction) to draw liquid into the pipette. Upon release, the material's elasticity restores the original volume. This approach provides the desired suction functionality through material properties rather than complex mechanical valves or pumps, resolving the contradiction between ease of operation and device complexity.

The base element is designed as a simple polygon with straight edges and flat surfaces that can be easily manufactured using standard molding techniques. The segmentation into distinct flat faces (triangle, square, rectangle, or pentagon) provides stable resting positions without requiring high precision. Each face creates a stable platform that prevents rolling, and the geometry can be produced with conventional tolerances, resolving the contradiction between reliability and manufacturing precision.