The SSIR-type “BAIKAL-SR” Implantable Telemetering Frequency-adaptive Electric Pacemaker is intended for treatment of atrioventricular heart blocks at Morgagni-Stokes syndrome and other cardiac rhythm disorders by electric stimulation of ventricles or atriums. The Electric Pacemaker includes an activity transducer (sensor control), allowing to increase frequency of stimulating pulses depending on physical activity of the patient.

Adopts unipolar or bipolar electrodes with IS-1 (3.2 mm) standard tips.

Programmable by means of UNI programmers.

Provides the impedance measurements of electrode in a range 100 to 3000 ohm.

The Electric Pacemaker has a reduced teardrop-shaped design.

Telemetering information:

• model and serial number
• programmable parameters of stimulation
• battery condition
• impedance of electrode

Statistics:

• imposed events
• perceived events

Operation modes:

Stimulation mode	A00, A00R, AAI, AAIR, AAT, AATR, V00, V00R, VVI, VVIR, VVT, VVTR, OFF
Frequency of stimulating pulses, ppm.	30...70... 150 ppm (step 5 ppm)
Sensor frequency, max, ppm	90... 180 ppm (step 5 ppm)
Response time	10...50 s (step 10 s)
Recovery time	1.16 min (step 1 min)
Frequency growth	1...16 (step 1)
Frequency smoothing	0 (off); 3; 6; 9; 12%
Amplitude of stimulating pulses, V	0.60; 1.00; 1.35; 1.75; 2.10; 2.50; 2.90; 3.25; 3.65; 4.00; 4.40; 4.80; 5.15; 5.55; 5.90; 6.20
Duration of stimulating pulses, mcs	122...488…976 mcs (step 122 mcs)
R-wave threshold of sensitivity, mV	1.0; 2.0; 3.0; 4.0; 5.0; 6.0; 7.0; 8.0.
P-wave threshold of sensitivity, mV	0.5; 1.0; 1.5; 2.0; 2.5; 3.0; 3.5; 4.0
Refractory period, ms	200...260...500 ms (step 20 ms)
Hysteresis, ms	0...300 ms (step 50 ms)
Input - output operation mode	UNI (unipolar) or BI (bipolar)
Programming of VARIO mode	by amplitude and duration