## 5 Internet of Medical Things
### Types of IoMT  
Each type of IoMT device and application has its own set of benefits and challenges. However, when used together in a cohesive system, they provide a powerful tool for improving patient outcomes and delivering personalized healthcare. Implantable medical devices (IMDs) and Internet of Wearable Devices (IoWDs) are two types of connected medical devices that fall under the umbrella of IoMT [42].  
* Implantable medical devices  
IMDs are medical devices that are implanted inside the body, such as pacemakers, defibrillators, and neuro-stimulators. These devices provide continuous monitoring and treatment for chronic conditions. They collect data on a patient's vital signs, heart rate, and other health parameters, which are transmitted to healthcare professionals for analysis. They can also be programmed to deliver therapeutic interventions, such as electrical impulses to treat chronic pain or irregular heart rhythms. One of the benefits of IMDs is that they improve patient outcomes by providing continuous monitoring and treatment for chronic conditions. They also reduce the need for hospital visits and enable patients to manage their conditions more effectively from home. However, there are also concerns about the security and privacy of patient data collected by IMDs, as well as the risks associated with surgical implantation.  
* Internet of wearable devices  
IoWDs, on the other hand, are wearable medical devices that are worn on the body, such as smartwatches, fitness trackers, and health monitors. These devices track a variety of health parameters, including heart rate, blood pressure, and sleep patterns. They transmit data to healthcare professionals for analysis and monitoring, enabling them to make informed decisions about patient care. IoWDs have the advantage of being non-invasive and easy to use. They also provide patients with real-time feedback on their health status and encourage them to make healthier lifestyle choices. However, there are concerns about the accuracy and reliability of IoWDs, as well as the potential for data breaches and cyber-attacks.  
Overall, both IMDs and IoWDs have the potential to revolutionize healthcare delivery by providing real-time monitoring and personalized treatment plans. As the IoMT ecosystem continues to evolve, we can expect to see more innovative uses of these devices and applications in healthcare. The main difference between IMDs and IoWDs is that IMDs are implanted inside the body, while IoWDs are worn on the body. IMDs are typically used for more serious medical conditions that require continuous monitoring and treatment, while IoWDs are used for more general health and wellness monitoring. However, concerns exist regarding the security and privacy of patient data collected by these devices, as well as the accuracy and reliability of the data.  
\begin{table}
\begin{tabular}{c c c} \hline \hline
**Type of Device** & **Application Area** & **Examples** \\ \hline Wearable Devices & Remote Patient Monitoring, Chronic Disease & Smartwatches, Fitness Trackers, Continuous Glucose Monitors (CGMs) \\ Implantable Devices & Chronic Disease Management, Patient Monitoring & Pacemakers, Neuro-stimulators, Implantable Cardioverter Defibrillators (ICDs) \\ Ingestible Devices & Patient Monitoring, Medication & Smart Pills, Digestible Sensors \\  & Adherence & Smart Beds, Smart Infusion Pumps, Remote Vital Sign Monitors \\ Smart Medical Equipment & Remote Monitoring & Smart Scales, Blood Pressure Monitors, Digital Thermometers \\ Health and Wellness & Health and Wellness Tracking, Disease & \\ Devices & Prevention & \\ \hline \hline \end{tabular}
\end{table}
Table 2: Types of IoMT devices and their application areas with examples.