Trackball Ergonomic Mouse

This trackball ergonomic mouse introduces a new interaction paradigm that transforms human–computer relationships. By replacing repetitive wrist motion with a thumb-operated trackball and static vertical grip, it enables cursor control without moving the device. This "static wrist + dynamic fingertip" logic reduces fatigue and eliminates desktop space dependency. With its spatial efficiency, biomechanical integrity, and structural precision, it serves professionals in design, programming, and medical fields requiring long-term digital engagement.

The form of this trackball mouse is sculpted directly from anatomical data rather than aesthetic norms. Utilizing 3D scans of relaxed hands, the design features an asymmetrical fluid silhouette tailored to natural hand posture. Key support zones—the thumb groove, palmar arch, and hypothenar platform—form a triangulated ergonomic load system. These zones distribute pressure while minimizing tension. The extended rear platform supports the wrist without lifting it, avoiding static fatigue and pressure points often neglected in conventional mice.

Unlike traditional mice requiring whole-arm movement, this trackball mouse uses a large-diameter, low-friction ball to deliver precise control via minimal thumb motion. The ball is embedded in a self-cleaning cavity that maintains accuracy over years of use. Stepped thumb buttons enable all primary inputs from a single ergonomic anchor point, while the index-finger-operated tilt wheel provides smooth vertical and horizontal scrolling—without repositioning the hand.

This mouse enhances long-term comfort through nuanced geometric refinements. A dedicated pinky rest with a slight elevation offset from the ring finger area avoids skin irritation and friction during prolonged use. All exterior edges feature R≥0.5mm curvature, eliminating sharp transitions and pressure points. Its matte black surface resists fingerprints and wear, and the absence of any lighting components removes distraction—supporting a focused and professional environment.

Targeted toward users spending extended hours on digital platforms, the mouse actively reduces the risk of repetitive strain injuries. The static wrist position eliminates nerve compression associated with conventional mice, while trackball use reduces tendon stress in the thumb. Simulation modeling confirms its benefits in minimizing the occurrence of carpal tunnel syndrome and thumb tenosynovitis—making the design not only comfortable, but clinically preventive.