Implanted Components
- The VNS Therapy™ System has been implanted in more than
45,000 patients with epilepsy
- Back-up of all implanted components are needed at all surgeries
VNS Therapy Generators
- The VNS Therapy generator is an implantable, programmable pulse
generator that delivers a precise pattern of stimulation to the
left vagus nerve.
Demipulse™ Model 103 Generator
- For new patients or replacement with a single pin lead
Physical
Characteristics of the Model 103 Generator |
| Titanium Case with Header |
6.9 mm x 45 mm x 32 mm |
| Weight |
16 grams |
| Header |
Polyurethane, single pin receptacle |
| Lead Compatibility |
Model 302 or Model 303 (single pin) |
| Power Source |
Lithium Carbon Monofluoride Battery |
| Average Expected Longevity |
~6+ years
depending on stimulation parameters* |
*Predicted longevity at 2 mA, 20 Hz, 500 msec, 10% duty cycle into a 4 kOhm load. The dose settings affect how long the battery will last. For example, the battery may last for 3 years at a higher setting compared with 8 years at a lower setting.
Demipulse™ Model 104 Generator
- For replacement with a dual pin lead
Physical
Characteristics of the Model 104 Generator |
| Titanium Case with Header |
6.9 mm x 45 mm x 39 mm |
| Weight |
17 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* |
*Predicted longevity at 2 mA, 20 Hz, 500 msec, 10% duty cycle into a 4 kOhm load. The dose settings affect how long the battery will last. For example, the battery may last for 3 years at a higher setting compared with 8 years at a lower setting.
Pulse™ Model 102 Generator
- For new patients or replacement with a single pin lead
Physical
Characteristics of the Model 102 Generator |
| Titanium Case with Header |
6.9 mm x 52.2 mm x 51.6 mm |
| Weight |
25 grams |
| Header |
Polyurethane, single pin receptacle |
| Lead Compatibility |
Model 302 or Model 303 (single pin) |
| Power Source |
Lithium Carbon Monofluoride Battery |
| Average Expected Longevity |
~6+ years
depending on stimulation parameters* |
*Predicted longevity at 2 mA, 20 Hz, 500 msec, 10% duty cycle into a 4 kOhm load. The dose settings affect how long the battery will last. For example, the battery may last for 3 years at a higher setting compared with 8 years at a lower setting. For full range of settings in relationship to battery life, see the Physician’s Manual or the EOS Projection on the handheld.
Pulse Duo™ Model 102R Generator
- For replacement with dual pin lead
Physical
Characteristics of the Model 102R Generator |
| Titanium Case with Header |
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 |
| Longevity |
~6+ years
depending on stimulation parameters* |
*Predicted longevity at 2 mA, 20 Hz, 500 msec, 10% duty cycle into a 4 kOhm load. The dose settings affect how long the battery will last. For example, the battery may last for 3 years at a higher setting compared with 8 years at a lower setting. For full range of settings in relationship to battery life, see the Physician’s Manual or the EOS Projection on the handheld.
The Model 100 and Model 101 Generators are no longer distributed
VNS Therapy Leads
- The VNS Therapy lead is a bipolar electrical lead that transmits
stimulation from the VNS Therapy generator to the left vagus nerve in
the neck.
- The lead is made up of the pin that connects to the generator on one end, and the helices that contain the stimulation
electrodes and anchor tether on the other end.
- All lead models are currently available in two sizes based
on helical inner diameter:
- Model 302-20 (2.0 mm)
- Model 302-30 (3.0 mm)
- Model 303-20 (2.0 mm)
- Model 303-30 (3.0 mm)
Simulation of
the electrodes and anchor tether attachment to the vagus nerve.
Perennia™ Model 303 Lead
The Model 303 Lead is a single-use-only device
intended for use with the Pulse Model 102 or Model 103 generator and is subject
to the same indications for use.
Physical
Characteristics of the Perennia™ Model 303 Lead (single pin) |
| Insulation |
Silicone |
| Length |
43 cm |
| Resistance |
180 to 250 ohms, pin to electrode |
| Electrode Sizes |
2.0 and 3.0 mm inner diameter |
| Generator Compatibility |
Model 102 and Model 103 (single pin receptacle) |
| Conductor Material |
Platinum Iridium |
Model 302 Lead
The Model 302 lead is a single-use-only device
intended for use with the Pulse Model 102 and Model 103 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 and Model 103 (single pin receptacle) |
| Conductor Material |
Platinum Iridium |
The Model 300 Lead is no longer distributed
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