Technology — TRI-PHASIC Alternating Pressure

The 3-cell cycle

A → B → C, every 2.5 minutes

Rather than distributing body mass by immersion, pressure alternates cyclically through groups of three cells across the entire mattress. The TRI-PHASIC cycle runs three pressure levels — A (peak), B (mid-level), and C (minimum to zero) — and automatically advances every 2.5 minutes.

That means one-third of the body receives pressure relief every 2.5 minutes, and the entire body is offloaded every 7.5 minutes — eight sequential offload cycles per hour. Pressure is not constant; it is sequentially reduced to zero.

A–B–C cell pressures advancing across the cycle at 2.5, 5.0, and 7.5 minutes — Cell pressures rotate through A–B–C across the full cycle. One-third of the body reaches zero pressure at each step.

Reactive vs. Active

Know the difference between the two categories.

Industry experts and the NPUAP classify support surfaces as either "reactive" or "active." The distinction matters when evaluating systems.

Reactive Immersion surfaces

Low air loss, air fluidized, foam — patient sinks into the surface
Pressure reduced by increasing contact area (body-mass distribution)
Pressure stays constant unless the patient is moved
Pressure is never reduced to zero
"Hammock" posture can cause neck, hip, and back pain → lower compliance

Active True³ Digital System

Powered surface that periodically changes pressure regardless of movement
True offloading through sequential, cyclical pressure relief
Interface pressure changes automatically every 2.5 minutes
Pressure is sequentially reduced to zero — 8× per hour
Patient rests on the bed in natural alignment → comfort and compliance

Why it relieves pain

Natural alignment, not a hammock.

Immersion systems sink the patient into the surface, creating unnatural curvature of the spine and pelvis. That discomfort can lower compliance and may require pain medication to manage.

Because the True³ Digital System supports the patient normally — four inflated cells surrounding each deflated cell — the neck, spine, and pelvis stay in a more natural position. The patient is placed on the system instead of in the system.

Immersion versus alternating-cell support — Immersion distributes mass by sinking the body in; TRI-PHASIC supports on top while sequentially offloading.

Pressure mapping

One-third of the body to zero, every 2.5 minutes.

Pressure mapping across a full cycle of TRI-PHASIC alternating pressure. Notice how the offloaded region rotates through the body.

Pressure map at 2.5 minutes — 2.5 minutes

Pressure map at 5.0 minutes — 5.0 minutes

Pressure map at 7.5 minutes — 7.5 minutes

What the system does for you

Engineered for safety, comfort, and the bedside.

Fail-safe "3rd row" of air cells

Bottom rows are dedicated to patient protection via a dedicated fill tube with a one-way air valve. Air cannot escape even if power is lost or the pump is disconnected or malfunctions.

Reactive hyperemia

Sequential "rolling" of three different pressures promotes capillary micro-bursts to help maximize blood flow and lymphatic drainage — delivering oxygen and removing metabolic waste.

Infection control by design

No bacteria or virus spread from air sucked into a pump and blown out across the patient and into the room — unlike high-airflow fan systems.

Self-contained & quiet

No powerful fan constantly blowing air. Extremely quiet to support patient sleep, with no added heat to the room.

Simple setup & operation

Strap down the mattress, attach the pump, plug in, turn on. No special linens or expensive breathable incontinence pads. Prominent CPR release at the pump attachment.

Reliability

Backed by a full 2-year manufacturer warranty, with an additional 2-year extended warranty available.

TRI-PHASIC, multiple-cell alternating technology