3D Printed Nylon Manipulator Technical Documentation

1. General introduction
The 3D printed nylon manipulator is a high-precision and lightweight assistive device designed for disabled friends. By using Selective Laser Sintering (SLS) 3D printing technology, the high strength nylon material is molded into a biomechanical shape of the manipulator, which meets the needs of people with broken fingers or hand dysfunction to complete grasping and holding actions in daily life. The product incorporates ergonomics to provide efficient and stable gripping support.

Product Core Objectives
 Help users to restore their grip: provide a stable grip and a comfortable wearing experience.
 Help users to enhance their independence in life: after wearing it, they can use their disabled fingers to grasp and reduce their dependence on others' help.
 Enhance users' gripping experience: compared with traditional robotic products, the robotic hand adopts SLS 3D printing technology, which is light in burden and good in experience.

2.1 Laser sintering 3D printing technology
 High precision: SLS technology ensures that the precision of each part is within 0.1 millimeter, which is suitable for the manufacture of complex structures and multi-component manipulators.
 Superior material performance: the use of nylon material not only provides high strength and durability, but also maintains light weight and reduces the burden on users.
 Unsupported manufacturing: laser sintering does not require additional support structures, enabling the manufacture of complex structures with excellent surface quality and high wearing comfort.
2.2 Biomechanical Design
 Simulation of hand structure: the shape and joint design of the robotic hand is in line with biomechanics, and the grip is close to real hand movements, making it natural and comfortable to use.
 Customizable Adjustment: Adjust the component position of the manipulator, high compatibility and high comfort for users to wear.
 Diversified gripping actions: Built-in multiple gripping modes, including grip, release, pinch and other actions, to flexibly respond to different use scenarios.
2.3 Easy maintenance
 Modularized structure: the parts are modularized design, users can disassemble and assemble by themselves, which is convenient for cleaning and maintenance.
 Replaceable parts: through 3D printing technology, any damaged parts can be quickly replaced to ensure the long-term service life of the manipulator.

3. Applicable population
 Patients with broken or partially missing fingers: for missing or dysfunctional fingers due to accidental injury or congenital defects.

4. Product Advantages
4.1 Core Technology Advantages
 laser sintering 3D printing: the nylon manipulator printed by SLS technology has excellent structural strength and long-lasting durability, and the surface is smooth and delicate, greatly enhancing wearing comfort and aesthetics.
 Precise Grip and Flexible Control: The manipulator uses ergonomic design with natural and smooth movements, maximizing the closeness to the real movements of human hands.
 Lightweight and high strength: Nylon material not only maintains the lightness of the manipulator, but also ensures its high load capacity, which is suitable for all kinds of daily gripping movements.

 manipulator adjustable range

Adjustable range of finger ring position:
When the manipulator is adjusted to the maximum length, the range of adjustment of the finger ring is maximum: 34 mm.
When the manipulator is adjusted to the minimum length, the ring can be adjusted to the minimum range: 26mm.
Overall range of adjustment: 26mm-34mm
 The disabled finger must be a single knuckle.
Loosen the fixing screw of the finger ring, put the single finger into the ring, adjust the position according to the comfort needs, and then fix the ring on the threaded joint post.

Summary: The robot is suitable for users with one finger (except the thumb), and can be worn comfortably by users with a mutilated finger length of about 20mm-45mm.