The Design group is a subsection of IGH designed to create a low-resource device annually with it’s purpose catered to medical needs in low-income areas.
2017 – 2018
In 2017 – 2018, we developed the idea of a low cost suction machine, useful for medical practices involving the extraction of bodily fluids during surgery.
- Selected a suction machine from an Engineering World Health survey of doctors about common medical devices they are lacking
- Used in surgery to clear operational site
- Medical suction machines:
- Clear airways of saliva, blood, vomit, or other fluid
- Portable equipment costs $300 – $1000+
- Portable air compressors for tires have a motor which push air into a tire.
- This flow is conserved, with a hole in the motor for sucking in the motor.
- An attachment through this hole, with a hose and filter system adjusted for liquid usage was made and demonstrated to work to a certain standard.
- This design is made with many objectives in mind:
- Low cost – Most suction machines are extremely pricey, orders of magnitude more than our assembly
- Ability to run on different sources: The tire pump was designed to run on the standard 12 Volt car battery, and has a power outlet adapter if needed as well
- Easy to understand: This devices is simple enough and relatively easy to take apart and reconstruct, useful to overcome the barrier of a low number of technicians and engineers in certain countries
- Car tire pump re purposed to provide vacuum. Our design was assembled for ~$60
- Battery / AC power
- Easily replaceable fluid collection bin
The design for 2018 – 2019 is side stream capnography
A capnography or capnometry device is used to measure the concentration of exhaled carbon dioxide also known as end-tidal CO2 (ETCO2). For a healthy person the range for ETCO2 should be 35-45 mm Hg.
According to a study done by the Global Capnography Project this year, published in the journal Anesthesia.
There is a clear need for middle and low-income countries to have access to a simple and life-saving method of monitoring a patient’s breathing, called capnography.
11,000 potentially fatal anesthetic accidents could be prevented every year by access to a capnograph
Side-stream: An indirect method of measuring exhaled CO2 in a non-intubated patient
- Sensor located away from the airway
- Gas moved to sensor by pump inside the monitor
- Use with cannula or adapt for ventilator airway
- Water traps, filters, or dehumidification tubing may be required
The project is currently underway in the prototyping phase
- After many attempts to get the IR emitter working, the I2C protocol seemed to work with the emitter
- A Proper holder for the device is currently being designed in SolidWorks
- A Cannula is being fitted to the device’s opening and exit for circulation
- The code is being written and a Adafruit screen is being coded to display the Co2 emission in standard forma