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HfG-Jaipur Knee Prosthesis 1.0
Our goal is an Independent worldwide production of functional prosthetic components. The project was created during interdisciplinary work at the University of Design Schwäbisch Gmünd and is an attempt to enable people who have lost the ability to walk to walk again. It’s the first prototype of our Knee Prosthesis which is based on PP. In the future prototype version we wanna create products which are based on PET and also for other parts of the body.PP
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1
HfG-Jaipur Knee Prosthesis 1.0
created 3 months agoedited 3 months ago
Our goal is an Independent worldwide production of functional prosthetic components.
The project was created during interdisciplinary work at the University of Design
Schwäbisch Gmünd and is an attempt to enable people who have lost the ability to
walk to walk again.
It’s the first prototype of our Knee Prosthesis which is based on PP. In the future
prototype version we wanna create products which are based on PET and also for
other parts of the body.
2
The HfG-Jaipur Knee is based on the Stanford Jaipur Knee
created 3 months agoedited 3 months ago
The HfG-Jaipur Knee Prostheis is based on the “The Stanford-Jaipur Knee.”
The Stanford-Jaipur Knee is an invention designed by the Stanford University, USA,working with the BMVSS team. The Stanford-Jaipur Knee has been hailed by Timemagazine (issue of November 23, 2009) as one of the 50 Best Inventions of the Worldin the year 2009.
We took this project as an example and created a prosthesis based on PP. This savesas many materials as possible and therefore also takes the environment, climate andresources into account.
Please note that this is the first prototype. This mechanical knee is not ready for realuse. It is a HfG- study and starting point for further developments.
3
Requirements
created 3 months ago
Leftover plastics (sorted by color and type) (In this first example, polypropylene (PP) was used as the starting material. In the future, polyethylene terephthalate (PET) willbe used to ensure the durability and resilience of the prosthesis. This also applies toall other parts planned for the future, such as the base and the socket.)
Plastic shredder
Injection molding machine
5x Injection molding tools
4
Preparing Your Plastic
created 3 months ago
In order to press the plastic into the mold, it must first be shredded into granules. Use
the plastic shredder for this. Depending on the type of shredder you have, you will
need to shred the plastic 3-4 times.
5
Injection into the mold
created 3 months ago
Fill the injection molding machine with the shredded plastic and wait until the plastic
has melted evenly.
Insert the mold under the injection molding machine and inject the plastic mass evenly
into the tool.
6
Let cool
created 3 months ago
Let the plastic cool down for a while and then remove the part from the mold. Repeat
the steps until you have made all the parts.
7
Assembling parts
created 3 months ago
Once you have made all the parts, you can now put them together to create the
finished prosthesis. Please note: Some parts still require holes to be drilled in order to
screw the parts together.
8
HfG-Jaipur Knee & HfG Team
created 3 months ago
The team that worked on converting the Stanford-Jaipur prosthesis into injection
molded PP:
HfG Schwäbisch Gmünd
University of Applied Sciences
www.hfg-gmuend.de
It is an association of the faculties:
Product Design, Interaction Design, Communication Design and Digital Products
The project was supervised and supported in Nov. 2024 by:
Prof. Gerhard Reichert
Andreas Belthe - Method and Research Learning Lab
Jens Kause - workshop master – Machining & Laser
Students (alphabetical):
Anna Weinstein
Anton Pelezki
Clara Butkovic
Daniela Ciochina
Dimitri Wagner
Franz Anhaeupl
Gianni Pighetti
Julian Vogelsang
Julius Schoch
Maximilian Pfandl
Selamawit Gegziabher
Please note that this is the first prototype. This mechanical knee is not ready for real
use. It is a HfG- study and starting point for further developments.
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