Designing Connected CPAP Machines With SimpleLink™ Wi-Fi® Wireless MCU

3万 · 2020-7-28 12:59

ABSTRACTContinuous Positive Airway Pressure (CPAP) is the treatment of choice for obstructive sleep apnea. Withthe evolution of telehealth and telemedicine, CPAP devices with wireless connectivity are solvingproblems like lack of comfort and difficulties in usage that have been the most common reasons for poorCPAP adherence in the past. A connected CPAP device can use various wireless communicationtechnologies like Wi-Fi, Bluetooth® Low Energy and cellular network to obtain internet connectivity.This application report describes the Wi-Fi use case for a connected CPAP implementation. It alsodescribes the development of Wi-Fi enabled CPAP machine using the SimpleLink Wi-Fi CC3220 WirelessMCU or CC3120 Wi-Fi Network Processor.

3万 · 2020-7-28 12:59

Contents
1 Introduction ................................................................................................................... 2
2 Connected CPAP Machine Use Cases and Features .................................................................. 2
3 System Overview ............................................................................................................ 4
4 Summary...................................................................................................................... 7
5 References and Related Collateral........................................................................................ 7
List of Figures
1 Connected CPAP Use Cases .............................................................................................. 3
2 CPAP Machine Block Diagram Using the CC3220 SimpleLink Wi-Fi Wireless MCU .............................. 4
3 CPAP Machine Block Diagram Using the CC3120 SimpleLink Wi-Fi NWP ......................................... 5
4 Separate Execution Environments ........................................................................................ 6
Trademarks
SimpleLink, Texas Instruments, E2E, BoosterPack are trademarks of Texas Instruments.
Bluetooth is a registered trademark of Bluetooth SIG.
Wi-Fi is a registered trademark of Wi-Fi Alliance.
All other trademarks are the property of their respective owners.

3万 · 2020-7-28 12:59

本帖最后由 dirtwillfly 于 2020-7-28 13:01 编辑

1 IntroductionObstructive sleep apnea syndrome (OSAS) is a sleep disorder in which breathing is briefly and repeatedlyinterrupted during sleep resulting in reduction of blood oxygen level. According to the National SleepFoundation, millions of adults and children worldwide suffer from this sleep disorder. The prevalence ofOSAS greatly increases the risk of cardiovascular and cerebrovascular diseases in such a largepopulation, but this disorder can be treated. Continuous Positive Airway Pressure (CPAP) therapy is oneof the most common treatment methods.
A CPAP machine applies gentle but constant positive pressure to the patient’s respiratory system in orderto keep the throat from collapsing and obstructing the airway. CPAP machines also record importantusage data for the users and their physicians for therapy and compliance purposes. This usage dataincludes the duration of the CPAP usage, apnea events during the usage as well as other vital signs likepressure, humidity and respiration rates. Though CPAP machines have been around for decades, the lackof comfort and difficulties in usage have been some of the main reasons for the poor CPAP adherenceamong the OSAS patients. To mitigate these challenges, some of the newer CPAP devices are equippedwith wireless connectivity options which allow the devices to transmit the usage data to the manufacturer’sremote health platform service. This usage data is later used by the sleep physicians and patients to trackthe progress of the therapy. It can also be used by the physicians to track the patients' progress andadjust the prescription if needed. This capability allows the patients to use the devices at home rather thanin a sleep lab, resulting in a much more comfortable environment for the CPAP therapy.
The connected CPAP machines can use various wireless technologies like Wi-Fi, Bluetooth Low Energyor cellular network to upload the usage data to the patients’ cloud-based profiles. This documentdescribes the Wi-Fi use case for the connected CPAP machines and the system level implementationusing SimpleLink Wi-Fi Wireless MCU.