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Learning More About Primary Cell IPGs
Genesis® and GenesisXP ™ implantable pulse generator (IPG) systems are designed to be easy to implant, simple to program, and highly flexible, providing more options and more control than any primary cell IPG currently on the market.
The Genesis family of neurostimulation systems feature several breakthroughs in IPG technology for advancing the treatment of chronic pain. These innovative solutions include
- Eight electrodes with independent control
- MultiStim®, which facilitates broader coverage (4,3,19)
- Constant current delivery to maintain consistent levels of stimulation
- PC-Stim® for improved patient satisfaction (4,3,19)
- Wide parameter ranges for refined stimulation
- Multiple lead configurations for customized therapy
- A convenient, quick connection system for reduced implant time
In addition to the features shared with Genesis, GenesisXP offers a few features of its own. These include
- An extended battery capacity, which makes GenesisXP the longest lasting, most efficient primary cell IPG system on the market and allows for fewer surgical replacements
- A choice of single header model or dual, which eliminates the need for extensions and allows the system to be configured for specific patient requirements
IPG systems consist of an implantable pulse generator and a patient programmer, plus percutaneous leads or Lamitrode® paddle leads. A variety of accessories are also available to enhance the functionality of the system, including lead extensions and the Rapid Programmer® programming platform.
Multi-programmability: three program modes allow treatment to be customized for each patient’s pain patterns:
- MultiStim® provides an advanced treatment option for diffuse, multifocal pain patterns. MultiStim allows automatic, sequential delivery of multiple stim sets within a program to stimulate different anatomical regions.(3,4) Up to eight stim sets can be linked together in a program—each with individually adjusted parameters for amplitude, frequency, pulse width, and electrode polarity (with "cross-talk" allowed).
- PC-Stim® enables patients to self-regulate therapy according to their body position, activity, or pain level. (3,4) Patients can manually select up to 24 programs with up to eight stim sets each.
- Continuous mode provides a single, continuous stimulation program for less complex or unilateral pain patterns.
The Octrode® Advantage
Genesis systems can be used with Octrode (octopolar) leads, providing distinct therapeutic advantages. Octrode leads feature
- Optimal electrode geometry, allowing more specific stimulation targeting (12)
- Coverage of two vertebral segments for multiple site targeting and enhanced ability for electronic, rather than surgical, repositioning
- A lower revision rate compared to quadrapolar leads (4,3,7,9,11,19)
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Original Optimal Stimulation
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Electronic Repositioning Regains Optimal Stimulation
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Transverse Stimulation
The ability to create a transverse field between dual leads greatly enhances targeting options and allows the current to be directed selectively to midline structures of the spinal cord.(6)
MultiStim® for Expanded Coverage
Many patients require multiple programs with different stimulation parameters to effectively capture painful areas of varying intensities and locations. Genesis® and GenesisXPTM systems feature MultiStim, which can
- Automatically cycle dual programs
- Overlap stimulation patterns for broad coverage of diverse pain areas
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Stim Set 1
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Stim Set 2
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MultiStim Program 1 Cycling Stim Sets 1 & 2
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Constant Current and Constant Voltage
Constant current compensates for changes in impedance, such as tissue/ electrode interface changes, providing patients with continuous stimulation coverage.
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Constant Current |
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Constant voltage provides a steady "push," which creates a flow of current to the spinal cord. As long as impedance (the opposition to electron flow) remains constant, the current is sufficient to cause acceptable levels of stimulation. When impedance increases, the current delivered to the spinal cord decreases and may not be sufficient to reduce pain. When impedance decreases, more current is delivered to the spinal cord.
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Constant current ensures that a steady flow of current reaches the spinal cord. When impedance increases, a constant current pulse generator maintains the current level by drawing more voltage from the battery.* When impedance decreases, less voltage is necessary to maintain current.
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When impedance increases, the current delivered to the spinal cord decreases and may not be sufficient to reduce pain.
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When impedance increases, a constant current pulse generator maintains the current level by drawing more voltage from the battery.*
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When impedance decreases, more current is delivered to the spinal cord.
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When the impedance decreases, less voltage is necessary to maintain current and the current flow remains the same.
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*Within limits of battery output
ANS’ Genesis® and Eon® IPG Systems are constant current devices.
Multiple Leads for Multiple Solutions
Genesis® and GenesisXPTM systems are compatible with a wide variety of leads to meet each patient’s specific needs. ANS offers multiple percutaneous and surgical lead options, which include low impedance design and optimal electrode geometry, providing for specific stimulation delivery and minimized dorsal root stimulation. (12)
Genesis® Patient Programmer
The Genesis patient programmer provides physicians and patients with greater control of the IPG through
- An easy-to-use interface
- Simple, convenient visual and audio control
- Access to PC-Stim®
- Up to 24 MultiStim® programs for increased control and coverage
- Stimulation diagram for quick visual reference of pain coverage
- Distinctive amplitude controls for easy adjustment
PC-Stim® for Patient Empowerment
PC-Stim (patient-controlled stimulation™) enables patients to select from multiple prescribed programs for greater control over their therapy. PC-Stim effectively
- Facilitates broad coverage
- Provides flexibility in adapting to changing pain patterns
- Enables patients to be involved in their therapy for improved satisfaction (4,13,19)
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