Prisma 25 ST

Prisma 25 ST

Bi Level-ST therapy with innovative setting concept (SCOPES)

Prisma 25ST. the BI Level-ST therapy device in the prisma lINE


Many possibilities: Broad pressure range (4 — 25 hPa) and several adjustable parameters for greater flexibility in therapy settings

High level of safety: With the new automatic backup frequency PRIO S+ and high fixed setting of backup frequency

Proven: Optional TRILevel pressure curve and auto EEPAP regulation

Fast: SCOPES (indication-specific pre-settings) with the option of making adjustments at any time

Precise: Identification of periodic breathing, RERA, snoring, hypopnea, apnea and flow limitations

Reliable: Apnea differentiation with FOT (Forced Oscillation Technique)

For natural breathing: Optional autoTrigger (Trigger IN)


Technical Data Prisma 25ST

Product class as per Directive 93/42/EEC: lla
Dimensions (W x H x D) 170 x 135 x 180 mm
Weight about 1.4 kg
Temperature range
Operation: +5 °C to +40 °C
Storage: -25 °C to +70 °C
Permitted humidity, operation and storage rel. humidity 15 % to 93 %, no condensation
Air pressure range 700 – 1060 hPa coresponds to altitude of 3000 meters
Diameter of breathing tube connection (mask) 19.5 mm (fits standard tapered connector
Electric rating max. 40 VA
System interface 12 V DC max. 10 VA
Power consumption in 230 V 115 V
Operation (therapy): 0.11 A 0.22 A
Standby: 0.036 A 0.019 A
Classification as per EN 60601-1-11
Type of protection from electric shock Protection class II
Level of protection from electric shock: Type BF
Protection from damaging ingress of water and solids: IP21

ModesCPAP, APAP, BILevel S and autoS BILevel S/T , autoS/T, BILevel T

Mean sound pressure/Operation as per ISO 80601-2-70 about 26.5 dB(A) at 10 hPa (corresponds to sound pressure of 34.5 dB(A)
CPAP operating pressure range 4 to 20 hPa
BILevel operating pressure range 4 to 25 hPa
Relative inspiration time: Ti or Ttarget 25% to 67%
Trigger auto or can be set at three levels
Pressure increase speed can be set at three levels
Back up frequency 0 bpm to 35 bpm
Pressure accuracy
Peak flow as per ISO 80601-2-70, modes BI level,
without humidifier
4.0 hPa 235 l/min
10.5 hPa 225 l/min
17.0 hPa 215 l/min
23.5 hPa 200 l/min
25.0 hPa 195 l/min
Stability of the dynamic pressure (short-term accuracy) for 10 breaths/min as per ISO 17510-1:2007 when using the 19 mm hose.
7.0 hPa Δp≤0.24 hPa
10.0 hPa Δp≤0.28 hPa
13.5 hPa Δp≤0.3 hPa
20.0 hPa Δp≤0.4 hPa

Bi Level-ST therapy with innovative setting concept (SCOPES)

Prisma 25ST. the BI Level-ST therapy device in the prisma lINE

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