Stimulation Confirmation. Instant. Visual. Reliable.
The first disposable stimulation probe with an integrated LED indicator.
Contact Us Learn MoreIn every spine and ENT surgery, surgeons rely on verbal confirmation from IONM technicians to know if stimulation is being delivered. This creates delays, uncertainty, and silent failures — poor contact, loose cables, disconnected return electrodes. If something fails, no one knows until the EMG does not respond.
The Sentry Probe is a disposable stimulation probe with an integrated LED that illuminates the instant current flows. No battery. No software. Works with any standard IONM system.
If it is dark, something is wrong. That is the entire interface.
Contact is good. Return electrode connected. Stimulator firing. Current is flowing.
Poor contact, loose cable, disconnected return electrode, or stimulator not firing.
Brightness correlates with amplitude. Analog feedback with no added hardware.
A single passive circuit that adds zero complexity to the surgical workflow.
Resistor, diode, and LED in series with the stimulation path. No battery. No power source required.
No added hardwareThe LED draws less than 1 mA — no measurable effect on stimulation parameters.
<1 mA drawWorks with all standard IONM stimulators — Cadwell, Natus, Inomed, and others.
Plug and playLED brightness scales with current amplitude — instant visual dosing feedback.
Amplitude feedbackInstant visual feedback the moment current flows. No delay, no verbal loop.
Powered entirely by the stimulator. No charging, no replacement, no added complexity.
Works with any IONM system. Zero integration required.
Single-use, gamma sterilized. Matches workflow of standard disposable probes.
Confirms probe contact, return electrode, and stimulator function simultaneously.
Drops into existing workflow with zero learning curve.
The Sentry Probe plugs directly into existing stimulator setups. No software. No firmware. No new equipment purchases.
510(k) clearance pathway with established predicates. Patent pending (63/980,371). Designed for sterile, single-use distribution.
The Sentry Probe was developed in close collaboration with active IONM practitioners. Our clinical advisory team brings direct surgical and neuromonitoring experience to every design decision — from circuit engineering to sterilization packaging.
"The verbal confirmation loop is a real and persistent problem in neuromonitoring. A direct visual indicator on the probe is the kind of simple, elegant solution that gets used because it actually fits the workflow."
Dr. Payam Andalib, Clinical AdvisorSentry Spine's clinical validation spans spine and ENT surgical applications, with ongoing protocol development for the 510(k) submission.
Whether you are a distributor, clinical partner, or investor — we are interested in the conversation.
We are building relationships with independent distributors and surgical practices ahead of 510(k) clearance. If you work in spine or ENT — let's connect early.
Send a MessageSentry Spine LLC · Founded February 2026 · Massachusetts
Benjamin Askew, Founder & CEO