SENZIME TetraGraph Philips Interface, Operating Instructions Manual

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SEN 257
Issue 2.1
06 October 2020 Page
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6. Summary of Operation
A Neuromuscular Transmission (NMT) monitor shows the presence of a neuromuscular
block by stimulating a peripheral motor nerve and evaluating the evoked muscle response.
TetraGraph undertakes this function by periodically applying electrical stimulation to the
peripheral nerve and directly measuring the evoked electromyographic (EMG) response of
the muscles. This provides a quantitative and automatic measurement of muscle response
to a stimulus.
For more information about the TetraGraph and its functionality refer to the Operating
instructions for the TetraGraph monitor.
Using the TetraGraph Philips Interface the TetraGraph can be connected to any Philips
IntelliVue monitor to provide external display of numeric presentations of TOF Ratio, TOF
Count, PTC and ST measurements. TOF responses can also be displayed in wave form.
The TetraGraph Philips Interface makes use of nine standard labels, as specified by Philips,
and two additional custom labels. The custom labels are
‘NMT’ (measurement numeric) and
‘TOF’ (wave).
‘NMT’ represents TOF-responses and the label presents either TOFrat, TOFcnt or PTC
depending on the level of neuromuscular block. This numeric is further described with the
standardized Philips IntelliVue label parameters: TOFrat or TOFcnt.
‘TOF’ is a waveform representation of the TOF-responses and it is represented as bars
identical to the EMG-bars displayed by TetraGraph Monitor.
To find more information about the labels, please read section 17, List of labels.
7. Associated Devices
The associated devices for TetraGraph Philips Interface are the TetraGraph Monitor and the
Philips IntelliVue Monitor.
Supported software versions
The required software version of the TetraGraph Monitor for the purpose of being
connected with any Philips IntelliVue Monitor is : 34b.22b.12a or higher.
The Philips IntelliVue monitor needs to be of software version H.15 or higher and the Philips
Patient Information Center PIIC iX (version B.0) and PIC iX (version C.0 or higher).