BIOTRONIK Evia HF, Technical Manual, Page: 102 / 138

Chapter 9 Lead Connection
Evia HF / HF-T Technical Manual
PAGE 94
CAUTION
Setscrew Adjustment – Back-off the setscrew(s) prior to insertion
of lead connector(s) as failure to do so may result in damage to the
lead(s), and/or difficulty connecting lead(s).
Cross Threading Setscrew(s) – To prevent cross threading
the setscrew(s), do not back the setscrew(s) completely out of the
threaded hole. Leave the torque wrench in the slot of the setscrew(s)
while the lead is inserted.
Rotate the wrench counterclockwise until the receptacle is clear of obstruction. Then connect the
pacing leads as described below.
Insert the lead connector pin into the connector receptacle of the pulse generator without bending the
lead until the connector pin becomes visible behind the setscrew. Hold the connector in this position.
• Insert the enclosed torque wrench through the perforation in the self-sealing plug at an angle
perpendicular to the lead connector until it is firmly placed in the setscrew.
CAUTION
Tightening Setscrew(s) – Do not overtighten the setscrew(s). Use
only the BIOTRONIK supplied torque wrench.
Sealing System – Be sure to properly insert the torque wrench
into the perforation at an angle perpendicular to the connector
receptacle. Failure to do so may result in damage to the plug and its
self-sealing properties.
• Securely tighten the setscrew of the connector clockwise with the torque wrench until torque
transmission is limited by the wrench.
• After retracting the torque wrench, the perforation will self-seal. The proximal electrode of bipolar
leads is automatically connected. Connect the second lead as described above.
• Pass non-absorbable ligature through the hole in the connector receptacle to secure the pulse
generator in the pocket.
NOTE:
Do not lubricate the grommets.
9.1 Auto Initialization
Auto Initialization detects when a pacing lead is connected to the pulse generator at implantation as
well as the polarity of the lead is detected. Upon successful detection, the pulse generator automatically
initiates several key features. Auto Initialization consists of four phases, which are described below.
1. Lead detection
In order to detect a lead, the Evia CRT-P continuously delivers sub-threshold paces in both the
ventricular and the atrial channel to measure the lead impedance. The Evia CRT-P considers a lead
“detected” when the measured impedance is within 100 and 2500 Ohms.