Xuerong Cai ᱨᱮᱱᱟᱜ Meta Mecha Prosthetic Liner ᱠᱟᱱᱟ

Xuerong Cai ᱨᱮᱱᱟᱜ Meta Mecha Prosthetic Liner ᱠᱟᱱᱟ ᱫᱚ ᱥᱟᱭᱵᱟᱨᱱᱮᱴᱤᱠᱥ ᱯᱨᱚᱛᱤᱡᱚᱜᱤᱛᱟ ᱵᱷᱟᱜ ᱨᱮ 2023 A' Design Award ᱞᱚᱦᱟ ᱯᱩᱨᱚᱥᱠᱟᱨ ᱨᱮᱱᱟᱜ ᱟᱹᱰᱤ ᱢᱟᱱ ᱟᱠᱟᱱ ᱡᱤᱛᱠᱟᱨ ᱠᱟᱱᱟ᱾

ᱞᱚᱦᱟᱥᱟᱭᱵᱟᱨᱱᱮᱴᱤᱠᱥ· 2023

Meta Mecha Prosthetic Liner ᱠᱟᱱᱟ

Xuerong Cai ᱞᱮᱠᱟᱛᱮ

ᱜᱟᱦᱟᱠ: Meta Mecha

ᱥᱟᱭᱵᱟᱨᱱᱮᱴᱤᱠᱥ ᱵᱷᱟᱜ ᱨᱮ A' Design Award ᱞᱚᱦᱟ ᱯᱩᱨᱚᱥᱠᱟᱨ ᱡᱤᱛᱠᱟᱨ

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#142371 ᱞᱟᱜᱤᱫ ᱮᱣᱟᱨᱰ ᱦᱟᱞᱚᱛ ᱡᱟᱸᱪ

A' Design Award ᱨᱮ ᱧᱮᱞ ᱢᱮ ᱯᱨᱮᱥ ᱨᱤᱞᱤᱡ ᱯᱩᱨᱥᱠᱟᱨ ᱵᱮᱡ

ᱨᱚᱝ

ᱰᱤᱡᱟᱭᱤᱱ

Meta Mecha Prosthetic Liner ᱠᱟᱱᱟ ᱵᱟᱵᱚᱛ ᱛᱮ

ᱢᱮᱴᱟ ᱢᱮᱠᱟ ᱢᱮᱠᱟᱱᱤᱠᱟᱞ ᱢᱮᱴᱟᱢᱮᱴᱮᱨᱤᱭᱟᱞ ᱠᱷᱚᱱ ᱴᱷᱮᱱ ᱟᱠᱟᱱ ᱢᱤᱡ ᱯᱨᱚᱥᱛᱮᱛᱤᱠ ᱥᱚᱠᱮᱴ ᱞᱟᱭᱤᱱᱟᱨ ᱠᱟᱱᱟ। ᱱᱚᱶᱟ ᱞᱟᱭᱤᱱᱟᱨ ᱨᱮᱡᱤᱰᱩᱣᱟᱞ ᱞᱤᱢᱵ ᱨᱮᱱᱟᱜ 3D ᱥᱠᱮᱱ ᱠᱷᱚᱱ ᱟᱨ ᱪᱟᱞᱟᱜ ᱠᱟᱲᱟᱢ ᱞᱟᱦᱟ ᱨᱮ ᱡᱟᱣᱨᱟ ᱟᱠᱟᱱ ᱯᱨᱮᱥᱟᱨ ᱰᱟᱴᱟ ᱠᱷᱚᱱ ᱛᱮᱭᱟᱨ ᱦᱩᱭᱮᱱᱟ, ᱚᱱᱟ ᱠᱚ ᱛᱮ ᱢᱮᱠᱟᱱᱤᱠᱟᱞ ᱪᱮᱛᱟᱱ ᱫᱚ ᱚᱠᱛᱚ ᱦᱚᱲ ᱨᱮᱱᱟᱜ ᱢᱮᱰᱤᱠᱟᱞ ᱫᱚᱨᱠᱟᱨ ᱠᱚ ᱥᱟᱶ ᱪᱮᱛᱟᱱ ᱠᱟᱱᱟᱭ। ᱢᱮᱴᱟ ᱢᱮᱠᱟ ᱫᱚ ᱤᱱᱰᱟᱥᱴᱨᱤᱭᱟᱞ ᱯᱨᱤᱱᱴᱚᱨ ᱨᱮ ᱤᱞᱟᱥᱴᱤᱠ TPU ᱛᱮ 3D ᱯᱨᱤᱱᱴ ᱠᱟᱱᱟ। ᱢᱤᱫ ᱯᱨᱮᱥᱟᱨ ᱥᱮᱱᱥᱤᱴᱤᱵ ᱢᱮᱴᱮᱨᱤᱭᱟᱞ ᱫᱚ ᱴᱟᱶᱤ ᱨᱮᱱ ᱨᱚᱝ ᱵᱚᱫᱚᱞ ᱦᱩᱭᱩᱜ ᱠᱟᱱᱟ ᱡᱚᱠᱷᱚᱱ ᱯᱨᱮᱥᱟᱨ ᱫᱚ ᱥᱚᱦᱚᱜ ᱥᱤᱢᱟ ᱠᱷᱚᱱ ᱵᱟᱲᱟᱭ ᱠᱟᱱᱟ, ᱟᱨ ᱟᱢᱟᱜ ᱠᱟᱛᱮ ᱡᱟᱱᱟᱣ ᱮᱫᱟᱭ ᱡᱮ ᱞᱟᱭᱤᱱᱟᱨ ᱫᱚ ᱵᱚᱫᱚᱞ ᱞᱟᱹᱜᱤᱫ ᱡᱟᱨᱩᱨᱤ ᱠᱟᱱᱟ। ᱵᱚᱫᱚᱞ ᱠᱟᱢᱤ ᱫᱚ ᱥᱚᱡᱷᱚ ᱟᱨ ᱨᱩᱯᱤᱭᱟᱹ ᱠᱟᱱᱟ, ᱟᱨ ᱱᱚᱶᱟ ᱫᱚ ᱨᱮᱡᱤᱰᱩᱣᱟᱞ ᱞᱤᱢᱵ ᱨᱮᱱᱟᱜ ᱴᱷᱚᱠᱟ ᱴᱷᱚᱠᱟ ᱨᱩᱯ ᱵᱚᱫᱚᱞ ᱠᱚ ᱥᱟᱯᱚᱴ ᱮᱫᱟᱭ।

ᱢᱟᱱᱟᱱ

A' Design Award ᱞᱚᱦᱟ ᱯᱩᱨᱚᱥᱠᱟᱨ ᱵᱟᱵᱚᱛ ᱛᱮ

Meta Mecha Prosthetic Liner ᱠᱟᱱᱟ ᱫᱚ A' Design Award ᱞᱚᱦᱟ ᱯᱩᱨᱚᱥᱠᱟᱨ ᱧᱟᱢ ᱟᱠᱟᱱᱟ, ᱱᱚᱶᱟ ᱫᱚ ᱵᱷᱟᱞᱟᱭ ᱰᱤᱡᱟᱭᱤᱱ ᱠᱚ ᱞᱟᱹᱜᱤᱫ ᱮᱢ ᱟᱠᱟᱱ ᱥᱚᱢᱟᱱ ᱠᱟᱱᱟ᱾ ᱱᱚᱶᱟ ᱠᱚ ᱫᱚ ᱰᱤᱡᱟᱭᱤᱱᱟᱨ ᱠᱚ ᱨᱮᱭᱟᱜ ᱵᱷᱟᱵᱱᱟ ᱟᱨ ᱵᱷᱟᱞᱟᱭ ᱠᱟᱢᱤ ᱡᱷᱟᱞᱠᱟᱣ ᱠᱚ᱾ Meta Mecha Prosthetic Liner ᱠᱟᱱᱟ ᱫᱚ ᱠᱚᱞᱟ, ᱣᱤᱜᱭᱟᱱ, ᱰᱤᱡᱟᱭᱤᱱ ᱟᱨ ᱴᱮᱠᱱᱚᱞᱚᱡᱤ ᱨᱮᱭᱟᱜ ᱥᱤᱢᱟ ᱵᱟᱲᱦᱟᱣ ᱟᱨ ᱫᱩᱱᱤᱭᱟ ᱵᱷᱟᱞᱟᱭ ᱞᱟᱹᱜᱤᱫ ᱜᱚᱲᱚ ᱮᱢ ᱠᱟᱱᱟ᱾

ᱰᱤᱡᱟᱭᱤᱱ ᱯᱤᱪᱷᱟ ᱨᱮ

ᱯᱨᱮᱥ ᱠᱤᱴ

ᱰᱤᱡᱟᱭᱤᱱᱟᱨ ᱧᱮᱞ ᱠᱷᱚᱱ ᱠᱨᱮᱰᱤᱴ, ᱴᱤᱢ ᱥᱫᱚᱥᱭ ᱟᱨ ᱴᱮᱠᱱᱤᱠᱮᱞ ᱵᱤᱵᱚᱨᱚᱬ ᱮᱢ ᱟᱠᱟᱱᱟ᱾

ᱟᱞᱜᱟ ᱜᱩᱱ ᱠᱚ: With 3D printable mechanical metamaterials as the prosthetic liner, Meta Mecha makes it possible to customize mechanical surfaces for different amputees according to personalized medical requirements.
The pressure sensitive color-changing material provides visualization of the unsuitability and draws attention.
The prosthetic liner can be replaced to support the deformation process of residual limb. The user can update their mechanical surface inside the prosthetic in a simple and economical way.
ᱢᱟᱯ ᱟᱨ ᱯᱮᱠᱮᱡᱤᱝ: Width 136mm*Depth 139mm*Height 175mm
(The dimensions of prosthetic liner should differ from user to user, above is an example of our case)
ᱴᱮᱜ ᱠᱚ: Prosthetic socket liner, Customized design, 3D print, Computational design
ᱛᱮᱭᱟᱨ ᱛᱮᱠᱱᱚᱞᱚᱡᱤ: The mechanical metamaterial prosthetic liner is 3D printed with industrial quality 3D printers and elastic TPU. It is impossible to manufacture the complex 3D shape without additive manufacturing technology.
3D scanning and pressure sensor equipment are used before the design process to acquire the shape and mechanical requirements of amputees.
Generative design approach is used to generate design with customized requirements. In our prototype, we use Grasshopper to generate our design.
ᱰᱤᱡᱟᱭᱱ ᱪᱮᱞᱮᱧ: It is a challenge for us to understand the logic and process of editing mechanical metamaterial. We have referred to many papers and interviewed a metamaterial specialist in our university and finally managed to arrange the structure unit on a prosthetic liner by using Grasshopper and plugins. Another challenge emerges when we try to prototype the product with 3D printing. It took us a while to find an industrial 3D printing laboratory that can use TPU to print the complex structure of metamaterial.
ᱜᱚᱵᱮᱥᱚᱱᱟ: We had looked through papers on mechanical metamaterials, medical requirements on prosthetic and computational design to understand how to apply metamaterials in the prosthesis field. We then had conversations with a metamaterial specialist to verify our idea. We also printed out ten little blocks with metamaterial structure to experiment on different mechanical properties.
ᱯᱨᱮᱨᱚᱱᱟ: The future trend of computational design draws our attention to programmable matter and metamaterial. We are surprised to find its potential to empower design with material science and motivated to reconsider objects in microscopic logic.
With generative design and simulation tools, we propose application of metamaterial in the prosthetic field, offering both customized and medically compliant service.
ᱯᱨᱚᱡᱮᱠᱴ ᱥᱚᱢᱚᱭ: The project started in October 2021 in Shanghai, the first prototype was exhibited in D&I Shanghai in December 2021. An educational exhibition based on the project was shown in Shanghai Dyson Ideation Lab from February.
ᱠᱟᱹᱢᱤ ᱦᱚᱨ: Users first get residual limb 3D scanning and walk in a common socket to collect his pressure distribution data. A 3D model of metamaterial prosthetic liner is generated based on the data collected and medical requirements. After the prosthetic liner is 3D printed, it will be assembled with other parts of the prosthesis and delivered to the user. The prosthetic liner adjusts the best pressure level for the user and warns the user when pressure exceeds tolerance limits by color change. With the visual cue, the user can understand it's time to replace the liner to fit his residual limb deformation.
ᱴᱤᱢ ᱥᱮᱫᱟᱭ ᱠᱚ: Longyu Gong
Ruikun Pan
Xuerong Cai
Yanyun Wu
ᱪᱤᱛᱟᱹᱨ ᱥᱟᱹᱦᱟ: Images: Xuerong Cai, Ruikun Pan, Yanyun Wu, Longyu Gong