Medtronic last week launched a new medical device in the U.S. to monitor heart beats and detect atrial fibrillation, or abnormal heart rhythms. Called Reveal XT, it is a small device roughly the size of a memory stick, and is placed just under the skin in a brief outpatient procedure. This is the most recent example of a fast moving and important

Medtronic's Reveal XT
new category of medical technology: “inserted” (in contrast to implanted) sensors that can be administered and removed quickly and are designed to continuously monitor physiology, diagnose disease and maintain health.
One day you will have one. We all will, because this kind of in-body (but non-invasive) continuous health monitoring will play an important role in advancing us from Health 2.0 (individual-focused online health empowerment and collaboration) to what we can call Health 3.0 (direct, automated connection between an individual’s sensed physiology and his Health 2.0 tools and communities). More on that sweeping prediction in a bit.
St. Jude Medical, like Medtronic one of the largest global medical device companies, launched its own insertable diagnostic device six months ago. St. Jude’s Confirm product is also a cardiac monitor. It measures unexplained syncope (sudden fainting and dizziness) caused by electrical disturbances in the heart. Medtronic’s Reveal XT is a product line extension based on an earlier device, Reveal DX, which is also approved for diagnosing syncope and measuring cardiac rhythm abnormalities.
The Reveal and Confirm technologies have a number of other similarities. Both have a wireless

St. Jude's Confirm
link from under the skin to the outside world. This brings an individual’s monitored health information to a database and care management system (called CareLink by Medtronic and Merlin by St. Jude) that is used by physicians to receive patient-specific reports and analyze the diagnostic information. Both devices can currently be inserted for up to a 3 year period.
These early applications of insertable monitoring devices are important. Millions of people suffer from atrial fibrillation, which can lead to stroke, and unexplained syncope. However, these are first generation, niche applications that do not do justice to the broad potential such technologies represent. Having a sophisticated computer-based sensor device under the skin and limiting it to watching heart beats is like having an iPhone and using it only to make calls….or like going to the App Store with that iPhone, and feeling content with just downloading Pong.
Future product development for subcutaneous sensors will prepare them for broad health and wellness usage along three dimensions. First, the evolution from implantables to insertables will evolve yet again to tiny but powerful “injectable” devices. The requisite miniaturization know-how exists today. This will break down the adoption barrier for even simple outpatient surgical procedures and for devices that can be felt and seen under the skin. Second, the breadth of sensed physiologic parameters and device functions will increase to make the products more valuable and desirable, from additional body systems and molecular profile monitoring to medication and drug response tracking to activity and fall detection to direct mobile phone linkage to personal health record storage. Third, the access to sensor information will expand from its current focus on providing the physician with patient data to providing the individual herself with the sensed data for whatever use she chooses: use it as the basis for personal health decisions, auto-upload it into her favorite online patient and wellness community sites, set up family and other caregiver support systems, etc.
As the form factor, features and openness of these technologies increase in this manner, we will transition from the current, limited focus on diagnosis to one of disease management. Disease management will then transition to wellness management. And that is when we will all have one. Just as most of us could not now imagine a life without the mobile phone in our pocket, in the future there may come a day when we can’t imagine not having the ultimate mobile computer device under our skin. And then we will be in a Health 3.0 world.
Note: others have used the term Health 3.0 to capture the future link of commerce to health content and community. We believe this definition heads in the wrong direction, taking us away from a patient and health-outcomes centric definition.