Pinnacle-R SSIR Model 297

Pinnacle-R SSIR  Model 297


General parameter:

  • Basic(Lower) Rate: From 30 BPM to 120 BPM
  • Upper Sensor Rate: From 80 BPM to 180 BPM in steps of 2 BPM.
  • Upper Rate: From 80 BPM to 180 BPM in steps of 2 BPM.(In SST Mode)
  • Rate Hysteresis.
  • Magnet Response.
  • Noise Detection.
  • High Rate Temporary programming
  • Auto Measure (Auto threshold Measurement) (ON/OFF)

Pacing and sensing Parameters:

  • Pulse Width: From 0.07 ms to 1.5 ms.
  • Amplitude: From 0.2 V to 7.5 V.
  • Pacing Polarity : Unipolar /Bipolar
  • Sensitivity: 0.5 to 7.5 mV
  • Sensing Polarity: Unipolar/Bipolar
  • Refractory Period: From 200 ms to 500 ms in steps of 25 ms
  • Blanking Period: 100 ms

Hysteresis Parameter

  • Hysteresis Enable : On/Off
  • Hysteresis Rate Change : From 2 BPM to 40 BPM in steps of 2 BPM
  • Hysteresis Search: On/Off.

Activity Parameters:

  • Upper Activity Rate: From 80 BPM to 180 BPM in steps of 2 BPM
  • Activity Rate Response: From 1 to 15
  • Reaction Time: From 10 s to 60 s in steps of 10 s
  • Recovery Time: From 1 m to 10 m in steps of 1 m.
  • Automatic Refractory Change: On/Off. When programmed On, if the rate is greater than 120 BPM, the refractory switch to the minimum value between the programmed value and 250 ms.

Magnetic Response:

  • BOL: SOO mode. Rate 96 BPM.
  • ERI: SOO mode. Rate 84 BPM.
  • EOL: SOO mode. Rate 64 BPM

Battery Chemistry and Model: Lithium Iodine WG8950 (1.58Ah).
Initial Voltage: 2.8V.
Service Life: The expected life of the Pacemaker, pacing 100% at 60 min-1, SSI mode, with 2.5 V
amplitude, pulse width of 0.4 ms and lead impedance 500 Ohms, is more than 8 Years.
Size: 49X38X7.5 mm
Mass: 25 gm

 Rate Response
Upper Rate From 80 to 180 ppm in steps of 2 ppm
Response to Activity From 1 to 16
Reaction Times (Up Time) From 10 to 60 s, in steps of 10 s, to increment the rate 80 ppm
Recovery Times (Down Time) From 1 to 10 m, in steps of 1 m, to decrement the rate 80 ppm
Automatic Refractory Change When programmed, if the rate is greater than 120 ppm, the refractory period switches to 250 ms.


Tachycardia Treatment
Temporary programming Asynchronous pacing with rates from 32 to 380 ppm


Auto Measure
Auto Measure Switch On/Off


 Magnetic Response
Mode VOO
Rate BOL (begin of life): 95 ppm
ERI (elective replacement): 85 ppm
End of Service Indicators

ERI (Elective replacement): When the remaining capacity of the battery is between 4% and 8%, the pacing rate switches to 85 ppm when a magnet is applied.

EOL (End of Life): When the remaining capacity of the battery is under 4% of the initial capacity, the pacing rate slows 10 ppm.


Power Source
Battery Chemistry Lithium – Iodine WG 8711
Initial Voltage 2.8 V.
Maximum Available Capacity 0.82 A-hr.


Physical Characteristics
Dimensions 49 x 38 x 7 mm
Mass 24 g.
Case Material Titanium
Connectors 3.2mm, IS-1/VS-1


Service Life

The expected life of the generator, pacing 100% at 70 ppm, with 2.5 V amplitude and pulse width of 0.488 ms, is 10.2 years.


Telemetry Data
Parameters All the programmable parameters
Identification Model and serial number
Battery condition Voltage, ERI and EOL indicators
Statistics Keeps track of pacing and sensing events, as well as ventricular premature events. Frequency Histograms
Lead Impedance
Marker Pulses
Threshold Test
Rate Responsive Wizard
Automeasure regulation holter function
Rate reduce response



Noise detection: When the pacemaker senses events with frequency exceeding 11 Hz, it switches to VOO mode.

Run Away Limit: The pacemaker includes an anti-runaway circuit to avoid the generation of stimuli with a rate over 200 ppm (except in temporary programming).



The pacemaker is programmed using a microcomputer (usually a Notebook) that runs Windows operating system. It also permits the measurement of the stimulation and sensing thresholds as well as the generation of printed reports.