LynuxWorks and Portwell develop wireless body sensor platform for
patient monitoring
1 June 2010
LynuxWorks, Inc. and Portwell, Inc. have developed a
proof-of-concept wireless sensor platform for hospital patient
monitoring.
When monitoring vital signs (such as EKG and blood oxygenation)
during a patient’s hospital stay, sensors must be attached to the
body; frequently this results in an awkward and uncomfortable tangle
of wires.
To help untether patients, the proof-of-concept platform can connect
to more than 25 Bluetooth wireless biometric sensors and has the
ability to graphically portray patient sensor data for visual
monitoring in a familiar Windows environment.
The platform uses the Portwell WADE-8067, an Intel Core2 Duo
processor-based Mini-ITX board. Running on the board, LynxSecure
from LynuxWorks provides state-of-the-art software virtualization
technology that makes it possible to securely run both a Linux
operating system and an unmodified Windows operating system in
parallel on the platform. The proof-of-concept (PoC) demonstrates a
means whereby medical equipment manufacturers can quickly port
legacy wired sensor applications to a new wireless multicore
platform.
The Windows operating system, for example, is used to provide the
environment for graphical user interfaces (GUI) and other open
applications.
LynxSecure makes it possible to safely run multiple applications
on a single platform by isolating them into separate partitions to
prevent unintended or dangerous software interactions. In a
multicore environment, LynxSecure further provides the ability to
consolidate two physically separate systems into one unit. For
example, it is possible to bring together one or more embedded
patient monitoring platforms with the desktop Windows operating
system platform that runs the practitioner’s GUI into a single
compact platform. This allows a huge savings in costs, system
maintenance and footprint space.
“Although wireless technology is ubiquitous in many healthcare
devices, there has been some reluctance to use it for critical
patient care. Industry standards such as ISO 14971 for the
application of risk management to medical devices are helping to
address many safety and security concerns,” said Stephen Balacco,
director Embedded Software and Tools practice, VDC Research.
“ISO 14971 requires manufacturers to show they have taken
measures to prevent software defects, including unintended software
interactions that can result in failure, such as one application
overwriting the memory space of another. Highly secure software
environments such as LynxSecure that control memory boundaries can
prevent applications from accessing the data regions of other
applications, and thus help manufacturers meet safety-critical
standards.”
Addressing the full range of requirements for robust wireless
sensor medical applications, the PoC combines state-of-the-art
virtualization, remote management and hardware security using an
advanced multicore processing platform. Virtualization technology
increases reliability by isolating software workloads; remote
management improves availability by enabling technicians to fix
system defects quickly; and hardware-based security protects patient
data by preventing unauthorized software from executing.
“The close pairing of both advanced hardware and software
technologies offers the performance and security required by today's
demanding medical applications,” commented George Brooks, director
of business development, medical segment at LynuxWorks.
“Taking advantage of the hardware virtualization capabilities of
the PoC platform, LynxSecure offers the ability to run guest
operating systems at near-native performance. For example, it
enables an unmodified Windows operating system to run at much higher
performance than other solutions that rely on the traditional
emulation layer approach.”
“Multicore and virtualization are changing the way the medical
manufacturers develop next-generation applications,” noted Alex
Zilberman, medical segment manger, Intel’s Embedded and
Communications Group. “The use of a secure separation kernel and
hypervisor such as LynxSecure enables new highly integrated
platforms such as the PoC to provide more processing power, lower
energy consumption and dramatically reduce bill-of-material costs.”