Bionic Finger Prosthesis

This is a 3D printed finger prosthesis, designed for individuals with missing fingers, simulating finger grasping function through mechanical structures. As shown in the assembly diagram, it consists of four core components: Number 1 is the fingertip (The Tip), Number 2 is the connecting rod (The Link), Number 3 is the finger cup (The Cup), and Number 4 is the finger ring (The Ring).

The assembly requirements for this prosthesis are as follows:

• Material requirements: Requires 3D printing with PLA filament, which is the most common desktop 3D printing material, offering good formability and biocompatibility.
• Screw specifications: Two types of self-tapping screws are required for assembly:
  • M1.5×4 screw (1 piece), used to secure key articulated joints;
  • M1.7×5 screws (6 pieces), used to connect various structural components, ensuring overall stability.
• Tool preparation: Requires a small screwdriver or tweezers for precise installation of miniature screws; a magnifying glass is recommended to assist with operation due to the small size of the parts.
• Assembly order: It is recommended to first combine the 'finger cup' with the 'connecting rod' as shown in the diagram, then install the 'fingertip', and finally place and secure the 'finger ring', ensuring flexible movement of the articulated joints without jamming.