Cardiac stimulator 4427 Easypace - Instructions for use
16/40
Default parameters at power
on
Upon completion of self-test, the stimulator is set on mode Stand-by: frequency
rate 72 ppm, amplitude 10 mA, sense threshold 1 mV
Display liquid crystals type LCD, with back illumination, for monitoring stimulation and
sense parameters. 20 sec after the last key pressure, the display goes off, to be
switched on again at a touch of any key
Keyboard thermoformed, with EMI shielding, for setting stimulation and sense parameters
Power supply 2 main batteries: AA size 1.5 V alkaline (type LR6)
3 stand-by batteries: 1.4 V type PR44 or NR44 or 3 batteries of 1.5 V type D375H
Switch on On /Off button
Switching on signals Acustic (emission of a tone) and visual (turning on of LCD)
Max. input 11 mA
Autonomy Main batteries: > 10 days prior to low warning; at least 12 hours of residual
autonomy afterwards
The replacement can be done (within 120 seconds) without the
necessity of turning off the device
Stand-by batteries:> 350 main batteries replacements; batteries life > 12 months
When these batteries are dead, the replacement of main
batteries is prevented with the unit in operation (self-test of
charge level)
Signalling of batteries
discharge
Acoustic and visual, with no variation of sensing and pacing set parameters
Operating conditions
Temperature: +10 to +40
°
C
Relative humidity: 30% to 70% RH uncondensed
ATM. pressure: 700 mbar to 1060 mbar
Storage and transportation
conditions (for 4 weeks
max.)
Temperature: 0 to +50
°
C
Relative humidity: 20% to 80% RH uncondensed
ATM. pressure: 500 mbar to 1060 mbar
Packaging designed to prevent mechanical deterioration following the batteries
Dimensions 130 x65 x 32 mm
Weight Approx. 210 g (including batteries)
Note:
(1)
the accuracy of the measurements of the sensing values parameters has been calculated by using a
triangular signal 2 ms/13 ms (14708-2 Annex F)
The accuracy of the stimulation parameters has been calculated with a load of 500 Ω.
6.1. Graphic symbols
Symbol Meaning
caution, consult the attached documentation
defibrillator-protected apparatus of CF type
(Cardiac Floating, suited for direct cardiac
applications)
keyboard lock / unlock
NOTE: in heart stimulator 4427 the protection against the defibrillator discharge is inside
the device.