In modern healthcare, portable medical devices are essential to enable cost-effective remote outpatient care. A secure wireless connection enables device manufacturers to create a secure and convenient user experience. As the proliferation of outpatient care requires continuous remote monitoring of physical conditions, wireless devices and applications that enable this feature must have robust IoT device security, small form factor, and high energy efficiency to operate accurately, safely, and at the same time. With long life and low cost.

For the above-mentioned design requirements, Bluetooth Low Energy (Bluetooth Low Energy) technology is an ideal choice for all functions and can provide manufacturers and device manufacturers with an ideal wireless solution. This article provides an overview of portable medical device applications and development considerations, and further explains the advantages that Silicon Labs’ (also known as Silicon Labs) EFR32BG22 family of Bluetooth products can bring to device engineers.

What is a Portable Medical Device?

Portable medical devices continuously monitor and track a patient’s physiology. Medical professionals can remotely view the collected health data on a smartphone app via a Bluetooth connection. Wirelessly connected portable and wearable medical devices are critical to enabling outpatient care delivery.

Bluetooth low energy is the most widely used wireless connection technology in portable medical devices (such as blood glucose meters, continuous glucose monitors, blood pressure monitors, pulse oximeters, insulin pumps, heart monitoring systems, etc.).

What are the driving factors for the portable medical device market?

Governments around the world are reducing healthcare costs by improving the efficiency and patient coverage of outpatient care services. The global outpatient services market is projected to grow by 4.8% annually to reach $113 billion by 2026 ($77 billion in 2018). Hospitalization days have been falling for decades, a trend accelerated by the COVID-19 pandemic, as hospitals must quickly free up medical resources for emergency care.

Outpatient Care

Outpatient care can dramatically reduce the cost of medical care, effectively prevent the viral spread of disease, and enable more people to receive comfortable, more timely care remotely. Wirelessly connected medical devices enable continuous patient monitoring in the post-acute and rehabilitation phases. Patients can now stay at home and their daily lives are not affected; while medical staff can cost-effectively and safely provide consultations, observations and medical diagnoses remotely.

What do you need to know when designing a portable medical device? Read on for the top 3 design considerations for medical device manufacturers.

IoT Security in Portable Medical Devices

Portable medical devices collect, process, and transmit private health data, making security a paramount design consideration. Silicon Labs’ Bluetooth solutions are secure at every level, protecting your portable medical devices from the most complex logical, physical and wireless attacks and protecting patient privacy. Our EFR32 Gen 2 wireless SoC platform combined with exclusive Secure Vault security technology makes it the world’s first wireless SoC solution to receive Arm PSA’s highest level 3 certification. This gives OEMs and technologists the confidence that Silicon Labs’ solutions have been independently tested for IoT device security.

Bluetooth Stack Security – Our Bluetooth stack implements all standard security features to protect your application from wireless threats.

Secure Software – If security beyond the Bluetooth specification is required, Silicon Labs hardware supports mbed TLS, a trusted execution environment for Bluetooth applications.

Chip-Level Security – Our hardware enables secure boot with a root of trust and secure loader, secure over-the-air (OTA) updates, cryptographic engines, true random number generators, and Silicon Labs’ cutting-edge Secure Vault technology to ensure strong security.

How to optimize energy efficiency

The product life of portable medical devices, i.e. storage and normal useful life, varies from days to months. This creates challenges for power optimization and makes it an important design consideration. The clever layout design of our EFR32 Gen 2 platform minimizes total SoC power consumption (including MCU and radio) in standby and active modes. Your device can run for up to 10+ years on a coin cell battery. It also uses a smart way to enable longer shelf life for products sold over the counter.

Improving the Accuracy of Portable Medical Devices

High precision is one of the top design considerations for medical devices. The analog front end in our EFR32 Gen 2 platform hardware enables you to design high-precision medical products, including 16-bit analog-to-digital converters, 12-bit digital-to-analog converters, and precision on-chip voltage references. The advanced SoC design architecture ensures that the analog blocks perform as expected during the operation of the Bluetooth radio.

Block diagram of a typical portable medical device with wireless SoC, analog front end, sensor/actuator interface, and display. Silicon Labs EFR32 covers wireless SoC and MCU functions.

Original title: [Youpin Recommended] Secure, Smart Bluetooth Wireless Connections for Portable Medical Devices

Article source: [WeChat public account: SiliconLabs] Welcome to add attention! Please indicate the source of the article reprint.

Reviewing Editor: Tang Zihong

Leave a Reply

Your email address will not be published.