Specifications and Characteristics
99
RNS
®
System Programming Manual
RNS
®
S
YSTEM
W
IRELESS
W
IRELESS
F
UNCTION
Transfer data between the neurostimulator and
the programmer or remote monitor and wand:
interrogation, programming and live ECoGs
W
IRELESS
T
ECHNOLOGY
T
YPE
Short range, low power inductive coil to coil
telemetry
I
NTENDED
U
SE
E
NVIRONMENT
Clinical setting and home environment
O
PERATING
R
ANGE
0 – 3 cm
F
REQUENCY
B
AND
20 kHz – 50 kHz
R
ECEIVE
B
ANDWIDTH OF THE
N
EUROSTIMULATOR
100 kHz
R
ECEIVE
B
ANDWIDTH OF THE
W
AND
≥ 50 kHz
N
UMBER OF
C
HANNELS
Single Channel
M
ODULATION
T
YPE
On/Off pulse amplitude modulation
RF
D
ATA
F
LOW
C
HARACTERISTICS
Half duplex
E
FFECTIVE
R
ADIATED
P
OWER
37.25 nW or less
E
LECTROMAGNETIC
E
MISSIONS AND
I
MMUNITY
Electromagnetic interference (EMI) is a field of energy generated by equipment found in the home,
work, medical, or public environments that is strong enough to interfere with neurostimulator function.
The RNS
®
System is designed to be immune from common sources of electromagnetic interference.
The most common sources of EMI are discussed in this section.
The neurostimulator is intended to sense electrical activity of the brain, detect activity of interest,
deliver stimulation therapy, and communicate with a programmer. In addition, the neurostimulator is
intended to operate autonomously, conserve battery life, check for proper connectivity to leads, and
automatically recover from certain conditions.
Electromagnetic disturbances may be detected by the neurostimulator as noise or saturation and
therefore suppress the ability of the neurostimulator to detect activity of interest during the exposure
to the electromagnetic field. Conversely, electromagnetic disturbances may be detected as activity of
interest and result in the delivery of programmed stimulation to the patient. Electromagnetic
disturbances will not cause the neurostimulator to change modes or operating parameters.
Electromagnetic disturbances will not cause the neurostimulator to exceed prescribed therapy limits
or charge density limits. Electromagnetic disturbances can be expected to reduce the ability of the
neurostimulator to communicate with the programmer. If this happens, refer to
Communication Between the RNS® Neurostimulator and the RNS® Tablet
. The
neurostimulator is expected to recover all intended functions following the removal of the
electromagnetic disturbance.
Hospital or Medical Environments
Patients should always inform healthcare personnel that they have an implanted RNS
®
System (and
show their medical implant identification card) before any procedure is performed. Most diagnostic
procedures, such as x-rays and ultrasounds, may be performed without affecting the RNS
®
System.
However other diagnostic and therapeutic equipment with higher energy levels may interfere with the
RNS
®
System. Refer to
Warnings and Cautions – Programmer
on page
Summary of Contents for PDMS 4340
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