A medical tricorder is a handheld portable scanning device to be used by consumers to self-diagnose medical conditions within seconds and take basic vital measurements. While the idea for a medical tricorder has been mostly hypothetical until May 2013, there are reports that a firm named Scanadu has built one which they call the Scanadu Scout. While the device is not yet on the mass market, there are numerous reports of other scientists and inventors also working to create such a device as well as improve it. A common view is that it will be a general-purpose tool similar in functionality to a Swiss Army Knife to take health measurements such as blood pressure and temperature, and blood flow in a noninvasive way. It would diagnose a person's state of health after analyzing the data, either as a standalone device or as a connection to medical databases via an Internet connection. A Time Magazine reporter described the Scanadu Scout:
A hockey puck-shaped object that can apparently measure your temperature, heart rate, oximetry (blood oxygenation), run an electrocardiogram, gauge heart rate variability, clock pulse wave transit time (related to blood pressure), perform a urine analysis and calculate a metric Scanadu refers to (vaguely) as "stress." All you have to do to get these readings, urine analysis notwithstanding, is hold the Scout against your forehead for a few seconds.—Matt Peckham in Time Tech, May 2013
The idea of a medical tricorder comes from an imaginary device on the science fiction TV show Star Trek from the 1960s which featured fictional character Dr. Leonard McCoy using it to instantly diagnose medical conditions. One description of the fictional device was as follows:
The medical tricorder has a detachable, high-resolution, hand-held scanner that sends life-sign information to the tricorder itself. It can check all vital organ functions, detect the presence of dangerous organisms, and human physiology. Its data banks also contain information on non-human races known to the Federation, thereby making it possible to treat other life-forms.—report in the BBC
An inducement prize from Qualcomm of US$10 million, the Qualcomm Tricorder X Prize that was announced in 2012, has spurred the scientific and medical communities in a global competition. featuring 230 teams from 30 countries to create such a device. Several reports suggest that there may be opposition to the development of such a device by national medical regulating authorities such as the Food and Drug Administration in the United States, as well as possible opposition by doctors unwilling to permit consumers to do extensive self-diagnosis. There is agreement that such a device could bring huge increases in productivity and cost-savings, and spur a billion dollar market. There are signs that over a hundred venture-capital firms have invested $1.1 billion in digital health technology in 2012.
X Prize Competition
The X Prize Foundation launched the Tricorder X PRIZE at the 2012 Consumer Electronics Show in Las Vegas and promised to award $10 million to the first team to build a medical tricorder. According to the prize guidelines, the device should diagnose 15 different medical conditions, including a sore throat to sleep apnea to colon cancer. The prize will be awarded partially on the basis of which invention has the most consumer friendly interface. To win the prize, a successful medical tricorder will have to diagnose these conditions across "30 people in 3 days".
Functions of a medical tricorder
There is agreement that a device should be able to do the following:
- Disease diagnosis.
- Show ongoing personal health metrics such as heart rate.
- Monitor ongoing health.
- Summarize a person's state of health.
- Confirm quickly if a person is healthy or not. This function would be similar to the check engine light on a car.
How it might work
In 2012, there are devices built for medical professionals to analyze specific diseases or take specific health measurements, but there is not one all-purpose consumer device to diagnose a variety of conditions. Numerous accounts speculate that the advent of high-power computer chips, cell-phone technology, and improved scanners means that such a device will likely be invented in the next few years. There are devices now which can perform a single function analysis, such as a thermometer measuring bodily temperature, but the idea of a medical tricorder is that it should be able to perform a variety of basic yet important tasks. For example, it may be possible to combine a high-power microscope with a cellphone and use it to analyze swab samples electronically. Two electrodes on a device may measure heart action and serve as a portable electrocardiagram. Glucose levels can be measured by sampling tiny blood samples. It may analyze polarized light coming from a person's skin to reveal information about cancer or the healing of a wound. Sensors may pick up on abnormalities with DNA as well as the presence of antibodies. An ultrasonic probe can plug into a smartphone, allowing it to be used to create ultrasound images. Medical tricorders may work by sensing "volatile organic compounds our bodies secrete" by some means of smell. A second report confirms that sensitive electronic "noses" may detect infections such as pneumonia from a person's exhaled breaths.
Technologies and similar devices
There are reports that medical tricorders may emerge from "diagnostic medical apps" via Tablet Computers and smartphones. Some existing smartphones have been used as medical devices in the sense that text reminders have been sent to a patient about prescription renewals, and downloadable apps allow cameras in cell phones to act as sensors to track heart and breathing rates. Physicians use a device called an otoscope to look inside the ear, and such a device could be made which clips onto an iPhone, according to one report. There was a report that a tricorder to detect atmospheric analysis has been built. There are reports of fitness scanners available which are worn on a person's wrist, which relay information such as heart rate. The United States Department of Homeland Security has announced a "standoff patient triage tool" which is laser-based which helps medics evaluate a patients' vital signs wirelessly from 40 feet (12 m) away. A device made by the firm Scanadu is a small hand-held sensor which is put next to a patient's forehead which detects vital signs such as heart rate, breathing rate, blood oxygenation, pulse transmit time and temperature, and has electrodes to measure heart signals, and works in conjunction with a mobile app.
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- Note: name Scanadu a merging of scan and Xanadu, according to indiegogo
- Matt Peckham, Time Tech, May 24, 2013, A Star Trek Tricorder? ‘Scanadu Scout’ Health Monitor Surges Past Indiegogo Funding Goal: Remember Star Trek's tricorder? Someone's making the early 21st century version of one, Accessed June 26, 2013
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