Date: 27th Aug 2010
ZOLL Medical selects ADI's iMEMS technology
in its palm-sized CPR
Analog Devices has announced that ZOLL Medical has selected
ADI's ADXL322 iMEMS device in its palm-sized CPR (cardiopulmonary
resuscitation) device that measures the rate and depth of
chest compressions administered by rescuers. The PocketCPR
device uses an ADI digital iMEMS accelerometer to convert
the motion of PocketCPR into real-time measurement data
to accurately read the rate and depth of CPR chest compressions.
PocketCPR coaches a rescuer with audio and visual instructions
to initiate the critical rescue steps needed for reviving
someone experiencing sudden cardiac arrest. These steps
include checking responsiveness, calling for help, and performing
CPR. All steps follow the AHA Chain of Survival.
"By working with engineers at Analog Devices, we were
able to turn our vision of developing a small, affordable
CPR rescue device into reality," says Mark Totman,
president of Bio-Detek, Inc., a wholly owned subsidiary
of ZOLL that developed and manufactures the PocketCPR.
"Many people are reluctant to perform CPR because
they are not trained to do so or lack the confidence to
perform this life-saving rescue procedure. PocketCPR gives
them the assurance they need to perform CPR in an emergency,"
continued Totman.
This packetCPR is approved by the FDA (U.S. Food and Drug
Administration) as an over-the-counter rescue device. The
PocketCPR provides the user with prompts to encourage a
compression depth of 1.5 to 2 inches as recommended by the
AHA and International Liaison Committee on Resuscitation
(ILCOR). The device instructs the rescuer to "push
harder" if the compressions are less than 1.5 inches.
If good compressions are delivered, PocketCPR will respond
with "good compressions." A metronome helps the
user achieve the proper rate of compression.
"According to the Sudden Cardiac Arrest Association,
more than 300,000 people in the United States suffer from
sudden cardiac arrest each year," said Patrick O'Doherty,
vice president, Healthcare Group , Analog Devices. "The
American Heart Association estimates that for each minute
that goes by without the heart being restored to a normal
rhythm, the survival rate of an individual experiencing
sudden cardiac arrest drops by up to 10 percent. PocketCPR
helps save lives by ensuring rescuers administer CPR of
how ADI's products and technologies are enabling revolutionary
healthcare designs and shaping future advances in medical
equipment."
ADXL322 iMEMS operates from voltage of 2.7 VDC and typically
consumes 340 micro amps of current. The typical noise floor
is less than 220 micro g per root hertz, allowing small
tilt changes to be sensed using the narrow bandwidths (<10
Hz) typical of human motion. Selectable bandwidths of 0.5
Hz to 2.5 kHz allow additional flexibility to suit the application
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