Checkpoint Nerve Stimulator

Features 

  • Biphasic waveform stimulation 
  • Stimulus amplitude switch and pulse duration slider 
  • Visual LED indicator light and built-in battery

About the Checkpoint Nerve Stimulator / Locator

This device is designed to locate and identify nerves for testing. It can also be used to reveal muscle excitability. It does this by applying electrical stimulation to exposed motor nerves or muscle tissue. The Checkpoint nerve Stimulator is single-use and provided having been sterilised with Ethylene Oxide.  

The Checkpoint nerve Stimulator provides visual confirmation of nerve function even when tissue is obscured by bone, tumour, and scarring. The nerve response following use of this device helps inform surgical decisions going forward. It is therefore commonly used in cases where patients are experiencing arm trauma. For instance, as a result of due to carpal tunnel syndrome or elbow joint injury. 

Nerve Stimulators will confirm whether a tissue structure is a nerve or not, identify separate fascicle nerve groups, and induce tetanic contractions. They must be able to check for changes in nerve function throughout multiple procedures. As such, the Checkpoint nerve Stimulator can be used safely for repeated nerve stimulation without a diminished response. 

Specifications 

  • Stimulus frequency – 16Hz (+/- 1) 
  • Stimulus amplitude – can be selected from the following: 0.5mA (+/- 0.05), 2mA (+/- 0.2), 20mA (+/- 2) 
  • Stimulus pulse duration – Continuously adjustable from 0-200µs (maximum setting +/- 20µs) 
  • Stimulus waveform – during the cathodic phase stimulus waveform is biphasic with controlled current (no net DC current). Patient circuit load resistance should be up to 1,500Ω. 
  • Operating life – approximately seven hours. 
  • Power source – two size N alkaline cells that are permanently sealed within the device. 
  • Operating temperature – roughly 16-26°C. 
  • Relative humidity – 30-60%. 
  • Atmospheric pressure – 88kPA to 106kPA 
  • Storage temperature – -20°C to +55°C. 

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    MAPPING

    Reliably locate nerves in altered anatomy or anytime nerves are at risk

    ASSESSMENT

    Determine stimulation threshold for motor response

    ELICITING A TETANIC CONTRACTION

    Confirm whether a tissue structure is a nerve

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    Checkpoint Surgical’s mission is to develop and advance nerve protection and repair technologies. By doing this, they aim to improve the quality of life for patients and physicians. Their products allow medical experts to restore the health of the peripheral nervous system, which is essential to quality of living. Checkpoint Surgical’s nerve care devices support nerve care by informing intraoperative decision making. 

    www.checkpointsurgical.com

    Frequently Asked Questions

    A tetanic contraction is a sustained muscle contraction that engages most muscle groups in the area. It is often induced by rapid and repeated stimuli to the relevant motor nerve.  

    This will depend on how long it takes the medical professional to locate the nerve they’re trying to test. Once the electrode is applied and the nerve is stimulated, a response will be displayed on the device monitor in a matter of seconds. 

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