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  • Portable Breath of Life

Portable Breath of Life

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Times of India
21 July 2010

Researchers from Massachusetts Institute of Technology have developed a low–cost ventilator that costs a fraction of the price of a normal ventilator. The device could save millions of lives in developing countries
LEFT: A working prototype of the mechanical ventilator developed by MIT students. RIGHT: Graduate student Abdul al Husseini demonstrates the features of the ventilator LEFT: A working prototype of the mechanical ventilator developed by MIT students. RIGHT: Graduate student Abdul al Husseini demonstrates the features of the ventilator
Ateam of students from MIT has devised a new low–cost ventilator to keep patients breathing in places that lack standard mechanical ventilators, or during times of emergency such as natural disasters, when normal hospital resources may be overextended.

They designed a system that uses a widely available manual pump– the same type used for the farmer in India. The new system encases the pump in a plastic box with a battery, motor and controls to take the place of the manual compression process.

There is a substantial need for such devices in many developing nations, especially in rural areas that have no access to existing ventilator tech.

Jussi Saukkonen of Boston University, who proposed the concept of the ventilator and worked with the MIT team, says that “it’s likely there would be millions of cases worldwide” that could benefit from such a device.

The kind of ventilators used in modern hospitals can cost up to $30,000, but the newly developed device can be produced for about $100, says Abdul Mohsen Al Husseini, a student and one of the people who developed the system.

While there are some situations where it can’t perform all the same functions as the expensive versions, for 98 per cent of cases, this simple device could do the job, he says. “These manual devices are available everywhere,” Al Husseini says. “Our approach is to adapt them, since they’re already there.” The simple system has a curved plastic cam that compresses the device and then releases. It has just three control knobs; these adjust the total volume of air delivered in each breath, the number of breaths per minute, and the ratio between inhaling and exhaling.

Al Husseini explains that the mechanical system could not only eliminate the need for a person to operate the device manually in an emergency– it could also be safer.

“There’s a danger, with manual ventilation, of overpressurising” the patient’s lungs, which can cause serious damage, he says. The new system includes a gauge that stops the flow before the pressure gets too high.

The idea began as a class project in an MIT mechanical engineering course called Precision Machine Design, in which doctors present problems awaiting solutions, and the students choose which ones to address.

A first prototype was developed in that class, and some of the students refined the design and produced a second prototype in a follow–up class, Development of Mechanical Products.

They filed for a patent and presented a paper on the system to the Design of Medical Devices Conference in April of this year. Now some of the students are preparing to do further testing and develop the idea so it can be licensed for manufacturing. This includes some field testing in Nicaragua to analyse the need for such a device

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