Ventrix Tech · Technical Briefing

VENTRIX GUARDIAN

How contactless bed-exit monitoring
actually works — and why it's safe

0
Cameras · wearables · mats
60 GHz
Licence-exempt sensing band
Real-time
Nurse-station alerts · tuned per patient
The technology

A tiny radar, not a camera — it senses motion & position, never images

millimetre-wave pulses · reflections from the patient · 10× per second
  • Millimetre-wave radar — the same sensing family used in car safety systems and sleep monitors, engineered for indoor human sensing.
  • It transmits tiny radio pulses and listens to the reflections — building a live picture of where the patient is and how they move.
  • Sensitive enough to register breathing motion of less than a millimetre — through blankets, in total darkness.
  • Nothing to wear, nothing under the mattress, nothing for the patient to defeat or forget.
What the sensor "sees"

A living point cloud — anonymous by physics

patientbed
live reconstruction · the patient is breathing — watch the chest
No lens exists anywhere in the product. The only data that ever leaves the sensor is a handful of anonymous points and a state — an image of the patient can never be produced, stored or leaked, because one is never formed.
Patient safety · RF exposure

Weaker than the phone in your pocket — by hundreds of times

  • Non-ionising radio energy — the same physical class as Wi-Fi and Bluetooth, fundamentally unable to damage cells or DNA.
  • At 60 GHz, energy is absorbed within the outer fraction of a millimetre of skin — it physically cannot reach organs or implants.
  • Average radiated power is a few milliwatts, and the sensor sits ~1 m away — exposure falls with the square of distance.
  • Complies with international RF-exposure limits (ICNIRP / EN 62311) with enormous margin — CE-marked modules, ISO 9001 manufacture.
  • Safe around pacemakers, infusion pumps and telemetry — see next slide.
Spectrum & regulation

A licence-exempt band, an ocean away from everything in a hospital

The core idea

The bed boundary — a virtual 3D box that does the judging

IN BED
automatic sequence: in bed → sitting up → edge of bed → exit
  • At installation, a 3D boundary is confirmed around the bed. From then on the question is simple: are the patient's points inside the box?
  • Sitting up and edge-of-bed are seen as distinct states — the ward gets an early “attention” cue before the exit happens.
  • Points crossing out of the box = bed exit — confirmed over a short, per-patient window, then delivered straight to the nurse station.
  • This spatial judgement is what simple motion sensors fundamentally cannot do.
The question every ward asks

False alarms — engineered out, not hoped away

IN BED — NO ALARM
a visitor walks by · a fan runs · blankets move — no alarm. Only the real exit alerts.
  • Gate 1 — space. Only points inside the bed boundary matter. A visitor beside the bed, a fan, a curtain — outside the box, ignored.
  • Gate 2 — shape. The point cluster must look like a person, not a blanket ripple or equipment vibration.
  • Gate 3 — time. The state must persist across consecutive scans before an alarm fires — twitches don't trigger.
  • Sensitivity is set per patient risk level — high-fall-risk patients get earlier warnings; low-risk beds stay quiet.
“But hospital beds move…”

Raised, tilted, backrest up — still inside the box

IN BED
side view · bed raising and lowering through its full travel — status never changes
  • The boundary is a 3D volume with vertical headroom — it covers the bed's entire hi-lo travel and backrest range from day one.
  • Raising the bed, tilting it, sitting the patient up — the body stays inside the monitored volume. No false exit, no blind spot.
  • If a bed is relocated within the room, a 2-minute tablet re-confirmation re-seats the boundary — the installer-grade view, in a nurse-friendly app.
  • And if geometry ever looks wrong, the sensor flags itself for re-confirmation — it fails loud, never silent.
From movement to nurse

Confirmed exit → nurse station, in seconds

Compliance & assurance

Every worry, answered

ConcernGuardian's answer
RF safetyNon-ionising, milliwatt-class, skin-surface absorption · within ICNIRP / EN 62311 limits with large margin
RegulatoryCE-marked radar modules · ISO 9001 manufacturing · licence-exempt 60 GHz band (no permits, no fees)
Medical-device interference60 GHz vs everything medical below 7 GHz — physically separated spectrum; walls contain the signal
PrivacyNo camera exists — anonymous points only; an image can never be produced or leaked
False alarmsThree independent gates (space · shape · time) + per-patient sensitivity
Bed movement3D boundary with full hi-lo headroom · 2-minute re-confirmation if relocated · self-flags, never silent
Data residencyFully on-premise deployment available — data never leaves the hospital
Positioned as a supplementary patient-safety aid that augments nursing observation — deployed ward-wide in days, not months.
Ventrix Guardian

Dignity-preserving. Radio-safe.
Watching every bed, all night.

Safe
Milliwatts · non-ionising · CE
Private
Points, never pictures
Certain
3 gates against false alarms
VENTRIX TECH — manufacturer  ·  SPECTROCON Environmental Testing & Inspection Services L.L.C — authorised distributor
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