4
Description
Design and Properties of the Lead
Product name
Protego
DF-1
S
Features at a glance
•
Fixation: Extendable/retractable fixation screw, electrically active
•
Shock coil: 1 x RV
•
Bipolar sensing and pacing in the ventricle
•
Insulation surface coating improves the lead body's gliding properties
•
Steroid collar on the lead tip reduces inflammatory processes and undesired
increases in threshold after implantation
•
Connectors:
— 1 x DF-1
— 1 x IS-1 (bipolar)
Lead body
The lead body consists of coils and cables that form the electrical connection
between the contact pin on one hand and tip electrode, ring electrodes and shock
coils on the other. Coils and cables are embedded in silicone insulation, which
serves to insulate the conductors from each other and from the outside
environment. The external surface of the silicone insulation is coated to improve the
lead's gliding properties.
Details: Technical Data, p. 24 ff.
Electrical properties
The fixation screw is electrically active and forms the distal pole (tip electrode) of
the lead.
Sensing and pacing occur between the distal pole and the ventricular ring
electrode.
The energy for cardioversion and defibrillation therapies is provided via the shock
coils.
Fixation
The lead tip has an extendable/retractable screw for fixating the lead in the
myocardium.
Extend or retract the fixation screw by rotating the IS-1 connector pin and thereby
the conductor to the tip electrode. For improved handling, a fixation tool is provided
for the connector pin.
Steroid collar
The lead tip has a steroid collar in the form of a rubber silicone ring that contains
dexamethasone acetate.
Lead connections
The following applies for the connectors:
Model
Length
Protego DF-1 S 60
61 cm
Protego DF-1 S 65
65 cm
Protego DF-1 S 75
75 cm
Connector for
Lead connector
Standards
Label
Sensing, pacing
IS-1
•
ISO 5841-3
•
EN 50077
IS-1 BI
Shock delivery
DF-1
•
ISO 11318
DF-1
