Pacing and Sensing Parameters
| Parameter Name | Range | Delivery Settings Per Model | Vitatron C20 SR C20A1/C20A2 |
Vitatron C10 S C10A1/C10A2 |
| Mode | VVIR, VVI, VVT, VOO, AAIR, AAI, AAT, AOO, OOO | VVI | VVI |
| Lower rate | 40-(5)-130 min-1 | 60 min-1 | 60 min-1 |
| Maximum pacing rate | 90-(5)-130 min-1 | – | 120 min-1 |
| 90-(5)-170 min-1 | 120 min-1 | – | |
| Pulse amplitudea | 0.5-(0.25)-4.0-(0.5)-8.0 V | 3.75 V | 3.75 V |
| Pulse durationa | 0.1-(0.05)-1.0 ms | 0.4 ms | 0.4 ms |
| Atrial sensitivity | Uni: 0.5-(0.1)-1.0-(0.5)-7.5 mV Bi: 0.25, 0.3-(0.1)-1.0- (0.5)-7.5 mV |
0.7 mV | 0.7 mV |
| Ventricular sensitivity | 1.0-(0.5)-10.0 mV | 2.0 mV | 2.0 mV |
| Sensing/pacing polaritya | Unipolar, Bipolar | Unipolar | Unipolar |
| Refractory period | 250-(10)-500 ms | 330 ms | 330 ms |
| Conditional hysteresis | 0-(5)-30 min-1 | 0 min-1 | 0 min-1 |
a Conditional hysteresis is only applicable in VVI, VVT, AAI and AAT modes.
Other Programmable Parameters
| Parameter Name | Range | Delivery Settings Per Model | Vitatron C20 SR C20A1/C20A2 |
Vitatron C10 S C10A1/C10A2 |
| Flywheel | On, Off | Off | Off |
| Night lower rate | 40-(5)-130 min-1 | 60 min-1 | 60 min-1 |
| Start of night | 18:00-(5 min)-02:55 hh:mm | 00:00 | 00:00 |
| End of night | 04:00-(5 min)-11:55 hh:mm | 06:00 | 06:00 |
| Pacemaker time | 00:00-(1 min)-23:59 hh:mm | 00:00 | 00:00 |
| Slope | Auto, Fixed | Auto | – |
| Threshold | Low, Low/Med, Medium, Med/High, High | Medium | – |
| Acceleration | Fast, Standard, Gradual | Standard | – |
| Deceleration | Fast, Standard, Gradual | Standard | – |
| Mode switching | Auto, Fixed | Fixed | Fixed |
| Ventricular Rate Stabilization | On, Off | Off (C20A2 only) | – |
| Maximum therapy rate | 70-(10)-120 min-1 | 100 min-1 (C20A2 only) | – |
Tolerances (valid between 22 °C and 45 °C throughout the pacemaker lifetime)
| Parameter | Tolerance |
| Lower rate (min-1) | Programmed value ±15 ms |
| Maximum pacing rate (min-1) | Programmed value ±15 ms |
| Maximum tracking rate (min-1) | Programmed value ±15 ms |
| Pulse amplitude (V) | Programmed value ≤ 1.0: +40%/-10% Programmed value > 1.0 ≤ 4.0: +20%/-10% Programmed value > 4.0 ≤ 7.0: +10%/-10% Programmed value > 7.0: +10%/- 20% |
| Pulse duration (ms) | Programmed value - 0.02/+0.04 |
| Atrial sensitivity (mV) | Programmed value ±(10% +0.16) at 37 °Ca |
| Ventricular sensitivity (mV) | Programmed value ±(20% +0.16) at 37 °Ca |
| Refractory period (ms) | Programmed value ±15 |
| Hysteresis (conditional)-1 | Programmed value ±15 |
| Lead impedance | Measured value ±(20% +20) |
| Battery voltage (V) | Measured value ±0.03 V |
| EGM amplitude (atrial) | ±(10% +0.16 mV) +1% of full scale (at 37 °C)a |
| EGM amplitude (ventricular) | ±(20% +0.16 mV) +1% of full scale (at 37 °C)a |
| ECG marker timing | ±10 ms |
a Add ±10% over temperature range 22 °C to 45 °C.
Telemetered patient and pacemaker data
| Data item |
| Patient’s name and identification code |
| Patient’s date of birth |
| Pacemaker type, model number and serial number |
| Pacemaker implantation date |
| Lead manufacturer, model number and serial number |
| Lead implantation date |
| Pacemaker dependent (yes/no) |
| Symptoms |
| Indications for pacing |
| Etiology |
| Pacemaker time |
| Notes |
| Physician’s name and phone number |
Measurements
| Measurement |
| Remaining pacemaker longevity |
| Lead polarity (atrial and ventricular) |
| Lead impedance (atrial and ventricular) |
| Pulse amplitude (atrial and ventricular) |
| Battery status |
| Remaining battery capacity |
| Battery impedance |
| Battery voltage |
| Mean battery current |
| Consumed battery charge |
| Pulse energy |
| Average pulse current |
| P/R-wave amplitude |
| Stimulation threshold |
| Fast learning (C20A1 and C20A2 only) |
Diagnostic Capabilities
| Category | Feature |
| ECG and therapy analysis | Intracardiac ECG ECG event marker intervals ECG marker annotation Therapy Advisor |
| Holters | 24-hour Holter 30-minute Holter |
| Histograms/tables | Diurnal rhythm distribution P-wave amplitude (AAI and AAIR modes) Ventricular rate (VXX modes) Ventricular rate irregularity (VXX modes, C20A2 only) Atrial rate (AAI, AAIR and AAT modes) |
| History(CXXA2 only) | Stimulation threshold Lead impedance P-wave amplitude Percentage paced |
| Counters | Percentage of atrium or ventricle paced Percentage of ventricle sensed (VXX modes) Percentage of physiologic atrial senses (AAI, AAIR and AAT modes) Percentage of pathologic atrial senses (AAI, AAIR and AAT modes) Number of episodes of atrial tachyarrhythmia (AAI, AAIR and AAT modes) Number of PACs (AAI, AAIR and AAT modes) Number of accelerometer counts (AAIR and VVIR |
Magnet Mode
| Parameter | Rate |
| Magnet pacing mode | AOO or VOO |
| Magnet rate, battery status "Good" | 100 min-1 (600 ms) |
| Magnet rate, battery status "Ageing" | 95 min-1 (630 ms) |
| Magnet rate, battery status "Replace PM" | 86 min-1 (700 ms) |
Warning: In magnet mode the pacemaker operates in an asynchronous pacing mode. If the intrinsic rate is higher than the magnet rate, this may induce ventricular tachycardia or ventricular fibrillation.
Exposed materials
| Item | Materials |
| Can | Titanium |
| Connector | Polyether-Urethane (PUR) and silicone rubber |
Physical characteristics
| Characteristic | Value |
| Dimensionsa | 46.8 x 45.9 x 7.25 mm |
| Mass | 27.3 ± 0.5 g |
| Volume | 11.9 ± 0.5 cm3 |
| Surface area | 33.1 cm2 |
| X-ray identification | VF |
| Connector | IS-1 dual chamber |
a Connector thickness may vary.
Electrical specifications
| Characteristic | Value | |||
| Output capacitor | 3.4 μF | |||
| Input impedance | ≥ 100 kΩ | |||
| Current/Energy consumption | VVIR | VVI | ||
| Pacinga | 16.2 μA | 15.3 μA | ||
| Inhibited | 10.3 μA | 9.3 μA | ||
a 100% pacing at 60 min-1, 3.75 V, 0.4 ms, 500 Ω.
Power source
| Characteristic | Value |
| Cell type | Pi 223 lithium iodine |
| Voltage | 2.8 V (RRTa 2.6 V) |
| Capacity | 1.4 Ah (RRTa 0.1 Ah) |
| Battery manufacturer | MECC |
a RRT = Recommended Replacement Time.
Interference and high rate protection
| Characteristic | Value |
| Interference detection frequency | 15.4 ±0.5 Hz (923 ±29 min-1) |
| Pacing mode during interference | VOO(R) if programmed to a ventricular mode. AOO(R) if programmed to an atrial mode. OOO if programmed to the OOO mode |
| Pacing rate during interference | Pacemaker behaves as if no spontaneous cardiac activity is present. If interference continues, the eventual pacing rate is either the sensor-indicated rate or the lower rate, whichever is the higher. |
| Ventricular high rate protection | 205 ±10 min-1 |
a Atrial high rate protection for pacemakers programmed to AXX modes; ventricular high rate protection for pacemakers programmed to VXX modes.