Emergency Open Source Ventilator for the COVID-19 Crisis
Kahanu | The Breath
This medical device is under development and legal review. Use of this medical device is pending authorization from the U.S. Food and Drug Administration under an Emergency Use Authorization and has NOT been approved as safe or effective for the prevention or treatment of patients during the COVID pandemic.
Kahanu is an open hardware project. It should only be used for emergency situations, and should always be operated by qualified personnel and under medical supervision. Incorrect use of the machine can result in serious injury or death.
Open Source Emergency Use Only, Unapproved Medical Device
The design of Kahanu is built upon the prior innovation of a worldwide community of engineers, medical professionals, makers, and hackers. And the design specifications for Kahanu will be similarly made available to the public to use and adapt, free of charge. Warning: Kahanu is not a medical device. Never use Kahanu without medical supervision.
Our Design
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- The design of Kahanu is built upon the certified OxyGEN ventilator from Barcelona.
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- Includes Kahnau innovations like a sled to enable respiratory changes without software or microcontrollers.
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- A manual hand crank can be manually operated if the motor or power system fails.
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- The motor and Ambu (BVM) bag are mounted in positions that make field swaps extremely easy.
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- 100% open source.

The Challenge
Hawaii has approximately 500 ventilators in the state but could soon need 150 more than that if cases surge over the next two to three weeks as some models indicate they will… Kahanu isn’t waiting for the big medical companies to gear up and get devices to Hawaii. The goal is to produce 400 emergency ventilators that can be used in Hawaii if there’s a surge in patients needing them

Download Open Source Designs
Warning: Kahanu is not a medical device. Never use Kahanu without medical supervision. We have posted our first design files online, and will continue to add resources as quickly as we can produce them. Kahanu is an open hardware project. It should only be built for emergency situations, and should always be operated by qualified personnel and under medical supervision.