Cardiac Resynchronization Therapy Defibrillator

Only the X4 quadripolar CRT-D provides 17 pacing vectors plus industry-leading projected longevity for more streamlined patient care.

Key Resources

Physician Technical Manual


Product Details


Models G050 and G051

  • Projected to last 8+ years under true usage conditions. 
  • This small (32.0 cm3) and thin (9.9 mm) high-energy device is designed to enhance patient comfort.
  • Offers 6 pacing vector options to manage around PNS.
  • Offers an advanced system solution for patient comorbidities and HF monitoring (HF Perspectiv™ report, LATITUDE™ NXT Remote Patient Management with weight scale and bloodpressure sensors). 
  • Multiple programmable options to reduce inappropriate and unnecessary shocks, including a choice of rhythm discriminators, and advanced sensing and filtering. 
  • EasyView™ header and color coded lead ports designed to make the implant experience more efficient.
  • SafetyCore™ technology is intended to provide lifesaving shock therapy and basic pacing functionality in the event of an unrecoverable fault.

Mechanical Specifications

Model Type Size (cm) (W x H x D) Mass (g) Volume (cm3) ConnectorType (RA RV LV)
G050 CRT-D 5.37 x 8.18 x 0.99
73.6   32.5 RA:IS-1;RV:DF4;LV:IS-1
G051 CRT-D CRT-D 5.37 x 8.08 x 0.99  72.8 32.0 RA:IS-1;RV:IS-1/DF–1;LV:IS-1

Pulse Generator Longevity (All Models a,b,c,d )

Pacing Amplitude Longevity (years) at 500Ω and 700Ω Pacing Impedance (RV and LV)
RA/RV LV 500Ω  700Ω
2.5 V  3.0 V  8.1  8.6
2.5 V  3.5 V  7.6  8.2
3.5 V  3.5 V  6.8  7.5
3.5 V  5.0 V  5.7  6.5

Longevity Information1

  • For longevity calculations based on different settings please contact Boston Scientific technical services or your local representative.
  • Boston Scientific devices have corporate warranties at 6 years in available geographies.
  • Devices use Li/MnO2  chemistry.
  • The Usable Battery Capacity is 1.9 Amp-hours (typical implant to battery capacity depleted).
  • Shelf life is 2 years (before use by).