HydroCoil is a hands-free wearable straw that delivers moisture exactly where it's needed, when it's needed. Invented by a dentist to solve a problem no rinse, lozenge, or drug could.
Xerostomia isn't just an inconvenience. For severe sufferers, reduced or absent saliva means waking every hour to sip water, chronic sleep deprivation, painful oral tissue, and rapid tooth decay. Existing remedies were never built for them.
Sources compiled from published market and clinical estimates including 6W Research, Polaris, Allied Market Research and Mordor Intelligence. Dry-mouth remedy market estimated at $2B–$4B annually.
Saliva cleans the teeth, protects tissue, and maintains a neutral pH—500 to 1,000 times a day without a thought. When it stops, every one of those moments becomes a problem.
Three simple parts work together. Everything in the fluid path is disposable and fully replaceable, and the coil rests in the natural folds of the mouth without straps or clips.
A slender, self-retaining coil that distributes water evenly across the mouth—mimicking natural salivary flow. Adjustable sizing, disposable, and comfortable enough to wear all night.
Delivers a gentle trickle on a set interval, or a larger flow on demand. Adjustable flow and timing, with battery or corded power for unattended overnight use.
User-supplied. Works with a standard water bottle, hydration bladder, or the included reservoir—no proprietary refills required.
The coil rests out of the way of the tongue, so you can talk, drink, and even eat while wearing it.
Set-and-forget overnight flow means no more waking every hour to sip from a nightstand.
Mimics the disbursement and flow rate of real salivary glands across the whole mouth.
Works equally well with full teeth, dentures, or no teeth—and alongside TMJ, snoring, and whitening appliances.
Designed to be worn with a CPAP mask, oxygen cannula, or nasogastric tube without interference.
A modest pump price plus low-cost weekly disposables—competitive with the monthly spend on OTC remedies that don't work.
From a full night's sleep to the last mile of a race to the recovery room—HydroCoil delivers moisture hands-free, no cup or straw required.
Severe sufferers finally rest. The pump sits on the nightstand and delivers a gentle, steady trickle until morning.
Paired with a hydration vest, HydroCoil keeps athletes drinking without breaking stride, hands, or focus.
Anesthesia dries the mouth and throat. HydroCoil keeps oral tissue moist for recovering and sedated patients.
OTC rinses, lozenges, and prescription drugs stimulate salivary glands that already function. For patients with little or no saliva, that isn't enough.
| Capability | HydroCoil | OTC rinses & gels | 400+ Rx drugs |
|---|---|---|---|
| Available over the counter | Yes | Yes | Rx only |
| Works during sleep | Yes | No | Yes |
| Passive use (no chewing) | Yes | Mostly no | Yes |
| CPAP compatible | Yes | No | Yes |
| Helps those who lack saliva | Yes | No | Mostly no |
| Doesn't interfere with medications | Yes | Unknown | Often contraindicated |
| Effective for severe dry mouth | Yes | No | No |
Hands-free, nighttime-first design. No prescription. Priced against the monthly spend on OTC rinses and lozenges.
Required a prescription. Pumps a small amount of fluid through a foam mouthpiece placed in the cheek or under the tongue.
Delivered water through a small tube connected to a headset / earpiece assembly.
Uses electrostimulation to encourage saliva production—only helps patients whose glands still function.
In 2011, while undergoing chemotherapy for chronic lymphocytic leukemia, I developed a side effect that permanently decimated my salivary function. I was miserable all day, but nighttime was the worst—so painful and debilitating that I literally could not sleep.
I searched everywhere for a product that could help me. Nothing did. So, drawing on a lifetime of understanding how the mouth works, I built a wearable straw that delivers moisture where it's needed, when it's needed.
I used to wake five times a night to sip water. Now I sleep through the night. I'm ready to bring this to the millions of others suffering from severe dry mouth.
Functional prototypes created and used daily.
Evaluated across 7 volunteers.
Practicing-dentist feedback: “novel,” “can't wait to recommend.”
FDA Pre-Submission completed with minor comments.
Issued utility patent; continuation pending.
Like a razor-and-blade model, an accessible entry system creates a lifelong stream of low-cost disposable coils and tubing—for a lifelong condition.
Figures are the founder's internal modeling assumptions, shown for illustration. They exclude several additional opportunities—long-term-care hydration, chemotherapy patients, poly-drug dry-mouth side effects, and sports/recreation hydration. Not a projection of results.
Whether you're a clinician who wants to evaluate HydroCoil, or a medical-device partner exploring licensing, we'd like to hear from you.