Working of Swasthya Slate

The technology that made the instant diagnosis possible at Peeragarhi was medical device called the Swasthya Slate. This $600 device, the size of a cake tin, performs 33 common medical tests including blood pressure, blood sugar, heart rate, blood haemoglobin, urine protein and glucose. And it tests for diseases such as malaria, dengue, hepatitis, HIV, and typhoid. Each test only takes a minute or two and the device uploads its data to a cloud-based medical-record management system that can be accessed by the patient.
The Swasthya Slate was developed by Kanav Kahol, who was a biomedical engineer and researcher at Arizona State University’s department of biomedical informatics until he became frustrated at the lack of interest by the medical establishment in reducing the cost of diagnostic testing. He worried that billions of people were getting no medical care or substandard care because of the medical industry’s motivation in keeping prices high. In 2011, he returned home to New Delhi to develop a solution.

Kahol had noted that despite the similarities between medical devices in their computer displays and circuits, their packaging made them unduly complex and difficult for anyone but highly skilled practitioners to use. They were also incredibly expensive — usually costing tens of thousands of dollars each. He believed he could take the same sensors and microfluidics technologies that the expensive medical devices used and integrate them into an open medical platform. And with off-the-shelf computer tablets, cloud computing, and artificial intelligence software, he could simplify the data analysis in a way that minimally-trained front-line workers could understand.

By Jan. 2013, Kahol had built the Swasthya Slate and persuaded the state of Jammu and Kashmir, in Northern India, to allow its use in six underserved districts with a population of 2.1 million people. The device is now in use at 498 clinics there. Focusing on reproductive maternal and child health, the system has been used to provide antenatal care to more than 22,000 mothers. Of these, 277 mothers were diagnosed as high risk and provided timely care. Mothers are getting care in their villages now instead of having to travel to clinics in cities.

A newer version of the Slate, called HealthCube, was tested last month by nine teams of physicians and technology, operations, and marketing experts at Peru’s leading hospital, Clinica Internacional. They tested its accuracy against the western equipment that they use, its durability in emergency room and clinical settings, the ability of minimally trained clinicians to use it in rural settings, and its acceptability to patients. Clinica’s general manager, Alvaro Chavez Tori, told me in an email that the tests were highly successful and “acceptance of the technology was amazingly high.” He sees this technology as a way of helping the millions of people in Peru and Latin America who lack access to quality diagnostics.