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Implanted Components

  • The VNS Therapy™ System has been implanted in more than 30,000 epilepsy patients
  • Back-up of all implanted components are needed at all surgeries


VNS Therapy Pulse Generators

  • The Pulse Generator is an implantable, programmable signal generator that delivers a precise pattern of stimulation to the left vagus nerve.


Model 102 Generator

  • For New Patients or Replacement with a single pin lead

Physical Characteristics of the Model 102 Generator
Titanium Case 6.9 mm x 52.2 mm x 51.6 mm
Weight 25 grams
Header Polyurethane, single pin receptacle
Lead Compatibility Model 302 (single pin)
Power Source Lithium Carbon Monofluoride Battery
Average Expected Longevity ~6† years depending on stimulation parameters

 

†Actual battery life may be more or less and is dependent upon actual stimulation parameters employed. At settings representative of +/- 1 standard deviation of the patient population, a battery life range of 3 to 8 years is expected


Model 102R Generator

  • For replacement with dual pin lead

Physical Characteristics of the Model 102R Generator
Titanium Case 6.9 mm x 58.9 mm x 51.6 mm
Weight 27 grams
Header Polyurethane, dual pin receptacle
Lead Compatibility Model 300 (dual pin)
Power Source Lithium Carbon Monofluoride Battery
Average Expected Longevity ~6† years depending on stimulation parameters

†Actual battery life may be more or less and is dependent upon actual stimulation parameters employed. At settings representative of +/- 1 standard deviation of the patient population, a battery life range of 3 to 8 years is expected


Model 101 Generator (No longer distributed)

Physical Characteristics of the Model 101 Generator
Titanium Case 10.3 mm x 54 mm x 54 mm
Weight 38 grams
Header Epoxy, dual pin receptacle
Lead Compatibility Model 300 (dual pin)
Power Source Lithium Carbon Monofluoride Battery
Average Expected Longevity ~8† years depending on stimulation parameters

 

†Actual battery life may be more or less and is dependent upon actual stimulation parameters employed. At settings representative of +/- 1 standard deviation of the patient population, a battery life range of 5 to 11 years is expected


VNS Therapy Leads

  • The VNS Therapy Lead is a bipolar electrical lead that transmits stimulation from the Pulse Generator to the left vagus nerve in the neck.
  • The Lead is made up of the pin(s) that connects to the Pulse Generator on one end, and the helices that contain the stimulation electrodes and anchor tether on the other end.
  • All lead models are currrently available in two sizes based on helical inner diameter:
    o Model 302-20 (2.0 mm)
    o Model 302-30 (3.0 mm)


Simulation of the electrodes and anchor tether attachment to the vagus nerve.


Model 302 Lead

The Model 302 Lead is a single-use-only device intended for use with the Model 102 Pulse Generator and is subject to the same indications for use.

Physical Characteristics of the Model 302 Lead (single pin)
Insulation Silicone
Length 43 cm
Resistance 120 to 180 ohms, pin to electrode
Electrode Sizes 2.0 and 3.0 mm inner diameter
Generator Compatibility Model 102 (single pin receptacle)
Conductor Material Platinum Iridium

 



Model 300 Lead (No longer distributed)

The Model 300 Lead a single-use-only device intended for use with 100, 101 or 102R Pulse Generators and is subject to the same indications for use.

Physical Characteristics of the Model 300 Lead (dual pin)
Insulation Silicone
Length 43 cm
Resistance 120 to 180 ohms, pin to electrode
Electrode Sizes 2.0 and 3.0 mm inner diameter
Generator Compatibility
Model 102R (dual pin receptable)
Model 101 (dual pin receptacle)
Model 100 (dual pin receptacle)
Conductor Material Platinum

 

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