Hoffrichter Trend II Bilevel ST20/30 (Import from Germany)
The device generates two pressure levels in the S-, ST- or T-mode via an electrically controlled blower.
Switching from one pressure level to another is realized via a quick change of the revolutions of the fitted high-performance blower to keep the stress for the patient as low as possible.
S-mode
Spontaneous trigger – the change from one pressure level to another is triggered by starting respiration of the patient only.
ST-mode
Spontaneous breathing and Time – as long as the patient is breathing independently the device is operating in the S-mode. Once the patient stops breathing the device automatically switches into the T-mode and provides respiration for the patient in the prescribed safety frequency. The delay time after which the device switches into the T-mode can be set.
T-mode
Time respiration with prescribed, set inspiration time. If the trigger function is deactivated the patient is ventilated according to the set parameters. If the trigger function is activated the device accepts only spontaneous trigger signals in the expiration phase.
Trigger device
The respiration trigger detects the patients efforts to breath in and out and signals these efforts to the control device. A flow-based trigger is integrated which can be set separately for inspiration and expiration. While the pressure increases during inspiration it decreases during expiration. In connection with an optimum slope adjustment ths results in a ventilation which is very comfortable for the patient and which gives the patient the impression as if the device is following the natural respiration without delay.
Technical Data
| Mass | approx. 2,3 kg |
| Power supply | 100 V ~…240 V ~, 50…60 Hz |
| 24 V DC / 2,1 A | |
| Pressure range | 4 … 20 hPa (mbar) |
| max. limitpressure in the event of error | < 40 hPa (due to construction) |
| Dimensions (w x l x h) | 215 x 195 x 105 mm |
| Power consumption (24 V DC) | Maximum 50 W |
| Standby < 5 W | |
| at 12 hPa (without humidifier) 10 W | |
| at 12 hPa (with humidifier, level 5) 30 W | |
| Power consumption (power supply) | Maximum 50 W |
| Standby < 5 W | |
| at 12 hPa (without humidifier) 12 W | |
| at 12 hPa (with humidifier, level 5) 33 W | |
| Short time pressure variance at 4 hPa | 10 bpm = ± 0,10 hPa |
| 15 bpm = ± 0,17 hPa | |
| 20 bpm = ± 0,25 hPa | |
| Short time pressure variance at 8 hPa | 10 bpm = ± 0,10 hPa |
| 15 bpm = ± 0,17 hPa | |
| 20 bpm = ± 0,25 hPa | |
| Short time pressure variance at 12 hPa | 10 bpm = ± 0,10 hPa |
| 15 bpm = ± 0,17 hPa | |
| 20 bpm = ± 0,25 hPa | |
| Short time pressure variance at 16 hPa | 10 bpm = ± 0,10 hPa |
| 15 bpm = ± 0,17 hPa | |
| 20 bpm = ± 0,25 hPa | |
| Short time pressure variance at 20 hPa | 10 bpm = ± 0,10 hPa |
| 15 bpm = ± 0,17 hPa | |
| 20 bpm = ± 0,25 hPa | |
| Values determined with and without AquaTRENDuni | |
| Long time pressure variance | < 0,3 hPa |
| Display accuracy pressure | 0,5 hPa |
| Average noise level | < 26 dB(A) at 10 hPa |
| Operation in a distance of 1 m | |
| (corresponds to an acoustic power level of 34 dB(A)) | |
| Air delivery volume | > 170 l/min at 4 hPa therapy pressure |
| > 160 l/min at 8 hPa therapy pressure | |
| > 150 l/min at 12 hPa therapy pressure | |
| > 130 l/min at 16 hPa therapy pressure | |
| > 120 l/min at 20 hPa therapy pressure | |
| Operating temperature | + 5 °C … + 40 °C |
| Storage temperature | – 20 °C … + 70 °C |
| Air humidity | 15 … 95 % rel. Luftfeuchte |
| (operation and storage) | |
| Operating altitude | – 400 m … 3500 m (1060 hPa … 700 hPa) |
| Filtration efficiency up to 1 μm | 99,5 % |
| CE-mark | according to EC Directive 93/42/EEC |
| Product class according to the MDD | Klasse IIa |
| The technical specifications are subject to technical modification. |
Hoffrichter Trend II Bilevel ST30
The TREND II Bilevel ST30 provides additional safety for the user through a backup frequency, even in the S mode, and alarms for apnea and low minute volumes.
The proven therapy, comfort and safety functions of the TREND II series (including the TREND II BILEVEL ST30) continue to assure effective and comfortable therapy, optionally with air humidification.
Enhanced data management with SD card
- Simple handling
- Data storage and transfer
- AI, leakage values, enhanced compliance analysis, respiratory flow and much more
The comprehensive therapy data are analyzed, adjusted and managed with the aid of the TRENDset PC software. Additionally, the AI, increased leakage values and the average daily operation can be displayed on the device itself. The TREND II BILEVEL ST30 automatically applies altered therapy settings after insertion of the SD card.
Pressure levels
TREND II BILEVEL ST30 features two pressure levels (I-pressure and E-pressure). The trigger, which can be separately adjusted for inspiration and expiration, is especially suited for shallow breathing and effectively prevents undesired self-triggering. The volume-controlled inspiration trigger and the flow-controlled expiration trigger can be set to three different levels.
A latency period of up to 20 seconds can also be set, after which time the ventilation function (T mode) starts. When spontaneous breathing is reinstated, the device automatically switches back to the S mode.
Enhances fields of application through new features
- High maximum pressure 30 hPa
- Target volume with adjustable pressure
- Tidal volume display
- Enhanced data management with SD card
TREND II BILEVEL ST30 Technical Data
| Dimensions (WxHxD) | 215 mm x 195 mm x 105 mm |
| Weight | 2,3 kg |
| Operating voltage | 100 V – 240 V AC, 50 – 60 Hz oder 24 V DC |
| Pressure range | 4 – 30 hPa (mbar) |
| Pressure fluctuations | < 0,3 hPa nach DIN EN ISO 17510-1 |
| Noise level | < 26 dB(A) bei 10 hPa nach DIN EN ISO 17510-1 |
| Data management | SD-Karte ≤ 2 GB |
| Modes | CPAP, BILEVEL S, BILEVEL T, BILEVEL ST |
| Languages | eng, deu, fra, ita, pol, nld, spa (further on request) |
| Meter | operating time, motor runtime, therapy time, filter age |
| Displays | pressure, bar graph, tidal volume, current mode (S, T), date, time, soft start ramp, alarm clock status |
| Comfort functions | automatic start stop, soft start ramp, leakage test, leakage warning, alarm on power failure, automatic start after power failure, date and time display, alarm clock function |
| Alarms | apnea, low respiratory minute volume, pressure too high, leckage, power failure |
Classification
protection class II, BF type devices acc. to DIN EN 60601-1
Conformity
CE mark according to EC Directive 93/42/EEC, device according to MDD Class IIa DIN EN 60601-1 and DIN EN 60601-1-2