A big thank you to i.nez!


Donation of prototyping funds

Our Litum project is making great progress! As we now move towards building our first prototype, we are generously supported by the International Network for Cooperation in Mental Health (i.nez) with a prototyping fund of 2,500 EUR.
Our friends from i.nez are dedicated to supporting projects, which aim to improve mental health care around the world, and promoting an active exchange with developing countries. Sounds just like our Litum project, doesn’t it? We totally agree – so from now on, we are very happy to join forces on making lithium measurable all over the world and ultimately, enabling every patient to exploit the full therapeutic potential.
As a next step, our team will buy the materials to build the detector and conduct first experiments. Stay tuned!
Authors: Lucas Mair & Susanne Meyer

Lithium blood test for patients with bipolar disorder in developing countries



Bipolar disorder is a mental disorder where affected individuals alternate between manic and depressive episodes. The most commonly used medication to help such people prevent future episodes is lithium, taken orally. In order to calibrate the proper dose of medication for each patient, it is important to frequently measure the blood concentration levels of lithium, especially at the start of treatment.


The main reson for this is that lithium actually has toxic effects if the blood concentration levels exceed 1.5 mmol/L. Symptoms include nausea, dizziness and motor impairment. However, in order for the medication to be effective, concentrations of 0.6 – 1.2 mmol/L are required.


In developed countries, hospitals and doctor’s offices have access to high-cost lab equipment that can measure the blood levels of a variety of electrolytes including lithium. In developing countries however, the investment and maintenance cost of such devices is too high, resulting in little use of lithium for medical purposes.

To solve this problem, our goal is to design an inexpensive, robust and easily reproducible device to measure the lithium concentration in blood of patients with bipolar disorder.


  • Nicolas Niessen
  • Susanne Meyer
  • Lucas Mair
  • Teodora Raicevic
  • Wolfgang Krahl

Our project team consists of four students from MedTech One World Students e.V. as well as psychiatrist Dr. med. Krahl, an expert in global health.

Author: Lucas Mair

Initiative on locally manufactured sustainable toothbrushes in Madagascar

In cooperation with Planet Action e.V. and the Deutsch-Madagassischer Verein Esslingen e.V. (DMVE), MedTech One World Students e.V. (MTOWS) is working on establishing a production of sustainable bamboo toothbrushes in Madagascar.

Logos of the three non-profit associations involved in the Madagascar Toothbrush project.

The project shall provide the local population with toothbrushes – a fundamental part of primary dental healthcare – and furthermore provide sustainable work and income for the local participants of the project. The toothbrushes will be distributed and used by volunteer physicians of Planet Action e.V., which travel to Madagascar several times a year to provide free dental health care service to the local population. Instead of buying conventional plastic toothbrushes from global companies outside of Madagascar it is the aim to use locally produced bamboo toothbrushes in the future.

First personal meeting of all three project partners at the Technical University of Munich in June 2020. Standing, from left to right: Klaus Meyer and Dorothee Schäfer (DMVE e.V.), Fabian Jodeit, Prof. Petra Mela, Martin Bachl, Baturay Yalvaç, Dario Arcuti, Nils Kraschienski (MTOWS e.V.). Sitting: Felix Geidel (Planet Action e.V.).

The alliance of the three non-profit associations is aimed at forming a partnership in which each project partner can contribute according to his field of expertise. Planet Action e.V., represented by Felix Geidel, is the initiator of the project and takes care of organizational and coordinative issues like financing as well as the medical side of the project. DMVE e.V., represented by Dorothee Schäfer and Klaus Meyer, supports with a broad network of contacts and production partners in Madagascar and years of experience in the Madagascan environment. MTOWS e.V., represented by Fabian Jodeit and active students, support the project from the medical engineering point of view, covering the technical aspects of the project like the design of the toothbrush and the manufacturing in Madagascar.

Several online meetings have been held during the time of the Corona pandemic in order to launch the project, decide on the nature of cooperation and agree on a framework. In June 2020, the first personal meeting between the members of the three participating associations took place at the chair of Medical Materials and Implants (MMI) of the Technical University of Munich. A picture of the participants of this kick-off meeting for the Madagascar Toothbrush Project can be seen above.

For MTOWS, the next steps of this project will be the procurement of raw materials and the design of a toothbrush prototype to verify its general function. For the later production of the toothbrush in Madagascar, the feasibility of production in an environment with reduced access to tools and electricity has to be taken into account. Furthermore, a business case for local production must be developed. Questions like “Who actually manufactures the toothbrushes?”, “Where do we get the machines from?”, “Will the workers work on a self-employed or dependent base?”, “Is the production limited time- or location-wise?”, etc. have to be answered.

Four students from MTOWS e.V. have committed to work on this project jointly. The necessary steps and operational framework were identified in online team meetings and then split into four major work packages which were allotted as follows:

  • Nils Kraschienski takes care of the procurement of the fiber material (bristles) used for brush production.
  • Dario Arcuti takes care of the procurement of the bamboo raw material used for toothbrush corpus production.
  • Martin Bachl is in charge of the prototype design and verification of production feasibility.

Batturay Yalvaç oversees the elaboration of a business plan with detailed responsibilities and business cases in Madagascar.

The project is scheduled for a rough duration of two years. If the Corona situation allows, it is the aim to travel to Madagascar in Q2 2021 in order to implement the production on-site and overcome potential problems with beginning manufacturing. Let us hope we can reach our goal in time and make this work together!

Author: Nils Kraschienski

COPE: COVID-19 Prevention – face masks for Ethiopians



The current COVID-19 pandemic is causing worldwide challenges and exceptional circumstances. Since there is no vaccine or effective medicine available yet the only possibility to prevent a rapid spread among the population are personal hygienic measures such as keeping distance and following hygienic rules. Particularly in everyday encounters face masks have proven to be an effective precaution.

With our project we provide 500,000 face masks for the citizens of Addis Ababa, Ethiopia. We hope that especially the poorest members of society can benefit from this project. Often they have no possibility of staying at home and cannot keep distance in cramped living areas.

Hopefully we will have a positive impact on the COVID-19 prevention in Ethiopia and will help to provide the chance of protecting everybody’s social environment.

We are honored to work with our Partner University Tegbare-id Polytechnic College in Addis Ababa on this project. They support us with the logistics and distribution in the community in Addis Ababa.



We are very grateful that the company Melitta Group was so kind to provide 500,000 of their face mask sets. We’d like to thank Melitta for their effort and support to make this project happen!

Furthermore, we’d like to thank Dr. Frank Drewnick from the Max Planck Institute Mainz who supports us on the scientific side, especially regarding the testing of the filter material of the facial masks. With his team he conducts tests of microbial cleanliness, bacterial filtration efficiency and differential pressure. A big thank you to Dr. Drewnick and his team!


Our project team consists of six students and scientists from MedTech One World Students e.V., an expert in global health and psychiatrist Dr. med. Krahl, a physicist from Max Planck Institute Dr. Drewnick and as mentioned our Ethiopian Partners from Tegbare-id Polytechnic College Ato Teshome and colleagues.



Abel and his Bamboo Wheelchairs

Last May, Abel  Hailegiorgis – the founder of Bamboo Things – came to Munich from Ethiopia to visit and work in a Bamboo Bicycle Club workshop. MTOWS supported him with networking and his daily life in Germany and he presented us his main project: the production of affordable bamboo wheelchairs.

MTOWs with Abel and his prototype of the bamboo wheelchair

As it is mentioned in the website of the company, its main aim is to bring accessibility to Ethiopia. In fact, bamboo wheelchairs are cheaper than any other wheelchair in this country. As well, they contribute to reduce the carbon footprint and to create local jobs.

In the following video you can meet Abel and learn more about bamboo wheelchairs.


We wish Abel all the best with this amazing project and we look forward to seeing him again soon.

Optimized Life Cycle of Medical Devices

Our last but not least project of the Global Health Challenge is about optimizing the life cycle of medical devices.

What is the problem and who is suffering because of it?

In this project we look more closely at the problem that many, otherwise functional, donated medical devices can not be used due to missing parts, missing calibration or even the lack of trained personnel who can operate them. In addition, the approval process of medical devices is largely unknown. For these reasons, patients often can not receive the appropriate treatment and devices are not used to the full potential.

Cycle_faulty sensor
A faulty sensor producing unreliable temperature readings
Picture taken by Simon Y. Kassahun at the Alert Hospital in Addis Ababa (April 2019)

Specifically in Ethiopia, more than a third of medical equipment is not functional and most of it is overused and dependent on donations. As well, power interruptions, untrained staff and lack of maintenance and guidelines make the use of medical devices even more difficult.

The function status of devices in three hospital in Southwest Ethiopia
Source: Availability and utilization of medical devices in Jimma zone hospitals, Southwest Ethiopia: a case study By Beyene Wondafrash Ademe, Bosena Tebeje and Ashagre MollaPublished in the BMC Health Services Research (2016)


The solution:

This team’s solution is based on the evaluation of the important steps of medical devices and the creation of a set of guidelines to make them successful and long-lasting.

To reach this objective, it is essential to consider the Four Principles of Good Donation Practice:

  1. Ensure maximum benefit to the recipient
  2. Respect for the wishes and context of the recipient
  3. Avoidance of quality double standards
  4. Effective donor-recipient communication and planning

Spare wheelchairs, spare parts and repair equipment at Addis Guzo
Picture taken by Simon Y. Kassahun at Addis Guzo in Addis Ababa, Ethiopia (April 2019)

The team

  • Bianca T. Blumenschein
  • Fabienne Greier
  • Simon Kassahun
  • Anna Klaas
  • Baturay Yalvac





M3dical open library

In this post we’re introducing you to the team m3dical open library, which is a project that was developed during our Global Health Challenge.


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What is the problem and who is suffering because of it?

  • Many rural areas have a lack of supply chain for surgical tools or simple clamps and tweezers e.g
  • efficient supply distribution and simple medicine are still lacking in developing countries
  • everybody who needs simple medical treatment

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The solution:

  • We want to give people the possibility to 3D print their own medical device without knowing how to use CAD-software (software to design the printable parts)
  • We build a website that lets you type in dimension of your medical device and output a ready-to-print STL file
  • the advantage to our solution is that its not only a library with saved parts, but you can manipulate size and dimensions in an easy way


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Infrastructure of 3D printing labs in Africa

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working principle of the website

Workflow conventional compared to m3dical open library

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Screenshots of Website:

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3D printed finger splint

Bildschirmfoto 2019-08-07 um 11.14.54You can access the website here:




Bildschirmfoto 2019-08-07 um 11.21.59


First Aid Scooter Tech

In today’s post we bring you another project developed for our first edition of the Global Health Challenge: FAST, the First Aid Scooter Tech.


What is the problem and who is suffering because of it?

This development is a solution for a problem in many cities, in which due to the overcrowded traffic and bad infrastructures, the ambulances are sometimes not able to reach medical emergencies on time.

Stuck ambulance in a traffic jam

FAST (First Aid Scooter Tech) has been created to provide adequate first-aid to anyone who needs time-sensitive medical treatment, in order to increase the survival rates after accidents or emergencies.

The solution:

The idea is to adapt the rear box of the scooters and convert it in a first-aid medical box, as you can see in the picture below. The content of the boxes includes these three main medical fields: diagnostics, consumption and ventilation/suction.


Furthermore, some special features of the boxes are:

  • A cover as a blanket, which can also assure a more hygienic treatment.
  • Functional module bags
  • Practical box design
  • Phone maintenance App, with a checklist that is updated after each use

FAST is thought to be used in addition to existing ambulances. The improvement is that it would allow a doctor or a nurse to reach the emergency location in the first place and start with the manoeuvres of the first aid as soon as possible.

The team

  • Mira Mahavadi
  • Thao Mai
  • Melanie Niebuhr
  • Helga Ritzl
  • Ottavia Rossini



Final Pitch Day of the Global Health Challenge

Our first Global Health Challenge is over! We had our final pitch day in the beginning of  July, after 2 months of hard work. Four teams came up with some amazing prototypes and presented their ideas in front of a jury consisting of Dr. Eblenkamp (head of MedTech chair at TUM), Marie Piraud (R&D at Konica Minolta) and Dr. Florian Becke (head of MedTech Bootcamp at Unternehmertum).

Congratulations to the team Automated Infusion Control on winning the challenge.

In this post we want to present you the winning team and their innovative idea to help improving Global Health. For each idea we first introduce the problem the team wants to tackle, who is suffering from the problem and finally present their solution.

Winning team: Automated Infusion Control

What is the problem:

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Bildschirmfoto 2019-07-31 um 21.37.49.png

  • In many developing countries infusion pumps for accurate medication is not available
  • Nurses in those countries therefore use infusion sets and have to count the drops of medication given to the patient
  • this process is inaccurate and time-consuming, as a specialist has to adjust the drop rate per patient, several times per hour

Who is suffering because of it:

  • The patients and the nursing staff, because they have to spend al lot of time and concentration counting the drops, where mistakes can be easily made

And this is their solution:

counting drops from infusion bag automatically

Bildschirmfoto 2019-07-31 um 21.42.29

cheap, easy setup, scalable 

This is the technical setup, which will be released with the Arduino code as an open-source project soon.

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Max and Adrian talk about their experience of six months in Ethiopia

Max Schlegel and Adrian Holste are two members of MTOWs who have been writing their Master Theses in Ethiopia from November 2018 until April 2019. In this interview they talk about their amazing stay there and they invite other students to live the same experience as them.

Daumen hoch
Max Schlegel (left) and Adrian Holste (right) presenting their projects in the Tegbareid College in Addis Ababa.

How did the project about the low-cost production of prostheses progress? What has been done so far? What has the research revealed?

Adrian: So far, the project focused on the prosthetic ankle joint with regard to local producibility. We concentrated on other prosthetic devices: Max on the knee joint and I on the foot. In our project we locally manufactured injection molds for prototypes. Also, new contacts to industrial partners could be established.

Max: In the end it was quite successful. I managed to produce an artificial knee joint with injection molds I built myself. Although a final test could only be conducted with one patient, the outcome was satisfying for all project partners. The molds stayed at Cheshire Services Ethiopia in Addis Ababa and I hope that they will start their own production in near future.

Did any other projects emerge? We are looking forward to your stories!

A: Together with staff members of Tegbared College and other students from MedTech OneWorld Students we developed an autoclave prototype using reverse engineering. The prototype was produced in cooperation with the local industry and will be tested in the clinical field soon. Furthermore, at the end of our stay, the Institute for Medical and Polymer Engineering of TUM organized the 1st International Networking Day on Medical and Plastics Engineering. We did not only help organizing the event but also attended it and presented our project findings and the student initiative. That was exhausting, interesting, fun and a good experience.

M: Of course, we got in contact with a lot of medical personnel, working in Addis Ababa which gave us big input for upcoming developing projects. Many of these can be supported during the Global Health Challenge. Besides that, we met Abel  Hailegiorgis, a small entrepreneur who has been recently in Munich for universal training. We support him during his stay and help him getting around in Munich.

Ulrich, Abel  Hailegiorgis, Adrian and Max (from the left).

Which interesting experiences have you had that could bear meaning for our group in the future?

A: As I mentioned, we produced an autoclave prototype together with Ethiopian students and a local manufacturer. This is our first development project for OneWorld Students. In the 1st International Networking Day on Medical and Plastics Engineering together with students from our group we visited the ALERT Hospital to get an inside view on medical technology in Ethiopia. At the networking day we got in contact with many persons from the industry which can potentially help in the future.

M: We met many people from different business areas. Therefore, we got to know the specific demand for medical products as well as a broad overview over locally available materials and means of fabrication.

What did you like most during this experience? And what really impressed you?

A: I liked the non-superficial way of getting to know the Ethiopian everyday life. Working at a college, making friends, eating local dishes, going by minibuses to work and walking through the streets gives you a feeling for Ethiopian life. Even though it can be very exhausting sometimes.

The influence of China impressed me the most. They build everything everywhere and lend a lot of money (with interest of course). Most mega projects are contracted with Chinese companies who profit a lot. They keep all the key technologies and are not interested in sharing experiences or investing in educational programs. So, they will get the next contract, too. Just few European and American companies have entered the market.

M: I really enjoyed getting in touch with other people and gaining insight into their live and work. I was really impressed by the daily problems Ethiopians handle with limited resources.

Max and Adrian with Fabian Jodeit and Markus Eblenkamp (from the Institute for Medical and Polymer Engineering of TUM) and two locals students during the 1st Ethiopian – German Networking Days on Medical Technology in April 2019


What kind of accommodation did you find in Ethiopia and which were usually your workplaces?

A: After living in a small room without a window at guest house in La Gare (very central and walking distance to the Tegbared College at Mexico), I moved to into a very nice shared house with two other flatmates.

Mostly, we worked at Tegbared College (in the Technology Transfer Center and in the General Manufacturing Workshop). Once a week, we drove to Cheshire Services in Menangesha (at least 1 hour drive). And sometimes we worked from here or there: guesthouse, home, hotel lobby for wifi, visits of factories and rehabilitation centers, …

M: I stayed in guesthouses for the whole time. After some days, I found a guesthouse in from where I could walk to the Tegbareid college, our main workplace. Though being quite pricey (7$ per night) and small (2.5×2.5 m room) I preferred it over other alternatives since I didn’t have to use public transport. Apart from working in the Tegbareid we also often worked in Cheshire’s workshop in Menangesha, a suburb of Addis Ababa. We got there by using Cheshire’s staff shuttle.

Any tips for future MTOWS who go to Ethiopia:

A: Bring a harness and shoes and go climbing at the local climbing crag Amora Gedel. Besides that, we created a document with information which are good to know and don’t hesitate to ask. On my experience everything works out in some way. So, don’t panic and stay relaxed.

M: It’s a great experience and you should definitely work on a project in Addis Ababa if you get the chance. Having said this, it’s also important to adapt to local ways of working. So you shouldn’t be too strict with schedules.