Hoffrichter Trend 500 Package
The Hoffrichter Trend 500 BiLevel CPAP Machine provides as a BILEVEL ST all the advantages
of the approved Hoffrichter technology with a high
pressure range and extreme power reserves at a very
low noise level.
500 is a therapeutic unit with two pressure levels
in the S, ST or T modes designed for the respiration
therapy of adults. A rapid change in the high-performance
fan speed allows the unit to be switched from
one pressure level to another. For pressure generation
Trend 500 has an electronically controlled turbine.
In order to keep the patient's burdening as low
as possible the turbine has been equipped with
sufficient power reserves as well as a fast control
The technology allows controlled
pressure transitions from one level to another
in practically any lapse of time. Thus it has
been possible not only to eliminate the noisy
servo valves but also to achieve an extremely
high constancy of pressure.
The respiratory trigger recognises the patients
efforts to breathe in and out and transmits them
to a control mechanism. The Trend 500 is equipped
with a pressure-controlled trigger. However the
regulating mechanism on the unit prevents pressure
fluctuations in the mask. To enable the trigger
to function the pressure corrections made by the
fan at its outlet are recorded to maintain a stable
pressure in the mask. The patients respiratory
work doesn´t change the mask pressure anymore.
The trigger mechanism of the Trend
500 has its own microcontroller to optimise the
release of the trigger by dynamic adjustment of
the release criteria to various sleeping phases.
In conjunction with optimal
flank adjustment the patient experiences a pleasant
ventilation which gives him or her the impression
that the unit pursues the natural breathing mechanisms
without any inertia.