NR6 Rhinomanometer

Rhinomanometry has been available to clinicians in one form or other for many years in order to quantify nasal function. Recent developments have included visual guidance to suggest whether airway resistance results achieved lie within normal, moderately obstructed, very obstructed or severely obstructed, bands therefore aiding in diagnosis of nasal conditions and allergies. The recent clinical research of so called 4 phase measurements including vertex and effective resistance measurements correlate well with the subjects impression of blockage and are included in our clinical/research version.

The NR6 Rhinomanometer calculates nasal airway resistance by measuring nasal flow and the pressure producing that flow.

The NR6 has a number of benefits to the user:

  • Diagnostic capabilities to infer nasal valve collapse, allergic response, chronic sinusitis, structural deformity and use in sleep studies.
  • Clinical and Clinical/Research versions available
  • Patient records database with comparative analysis (% change calculation)
  • Pre and Post medical treatment/operation comparisons
  • Interface with USB port
  • Software is compatible with Windows XP to Windows 10
  • Includes measurements for all the approved techniques, including “4 quadrant high resolution”, plus active anterior, posterior, standard and Broms angle, resistance values, plus the new Vertex and Effective resistance values available in the clinical/research version
  • Included as standard, a starter pack of accessories with a reusable adult, reusable child mask and one filter non-reusable for infection control
NR6 can be used for active anterior or posterior rhinomanometry, with either the Broms or standard technique as approved by the International Standardisation Committee.

The resultant curves are displayed in the standard 4 phase format. In addition it will calculate and display either the Rohrer coefficients or the Broms angle relating to the resultant curves.

Two versions of the instruments are available, the NR6 Clinical and the NR6 Clinical/Research the difference between them being the hardware and software facilities.

Both NR6 models provide:

  • An individual patient database, which holds patient details and stores test result files, in chronological order, for ease of display, printout and comparison.
  • Files can be saved to disk and recalled for comparison, re-examination or printout.
  • Tests can be performed using one of a number of techniques and reassessed by changing the reference or threshold points.
  • Test results can be compared with ones previously stored. This comparison is presented in the form of a graphical display with percentage change figures produced, and is available for printout.
  • A diagnostic facility, to help determine if nasal valve collapse has occurred, has been added to the standard system. This provides information on the flow at various points on the curve and calculates ratios and percentage increases at these points.
  • Guidance based on the curves produced to the category of obstruction has been developed into the software analysis based on published work to support the clinician in diagnosis and comparative study.

The NR6 Clinical/Research Model provides all the above features and additionally provides:

  • Flow and pressure curves displayed in a y/t format, with the calculation of Vertex and Effective resistance and their logarithmic values.
  • A batch test facility, which allows data runs to be repeated, and mean, standard deviation and coefficient of variance calculations to be displayed and printed. This “best clinical practice” facility helps ensure top grade measurement accuracy.
  • Data exportation facilities are built in to the Clinical/Research model, which allows “raw” data in a number of formats to be provided for statistical analysis and other purposes.
  • The NR6 has been successfully bi-directionally integrated with Hospital Information Systems (HIS) in various countries.
  • A Rhinocal unit, which allows the calibration of the NR6 to be checked.

Accessories and Consumables Supplied:

  • 1 x Adult Mask – Reusable NR-RA
  • 1 x Child Mask – Reusable NR-RC
  • 1 x 4 part tubing NR3/T
  • 5 x tip connectors NR/TIPCON
  • 1 x anterior tube connector NR/ATCON
  • 1 x metre posterior tubing NR/POSTUB
  • 1 x metre anterior tubing NR/ANTUB
  • 1 x hole punch NR/HP
  • 1 x roll of anterior tape NR/TAPE
  • 1 x flowhead NR/FL
  • 1 x anti viral filter NR/FILTER
  • 4 x large foam inserts NR/LARGE
  • 4 x standard foam inserts NR/STD
  • 4 x small foam inserts NR/SMALL
  • 1 x Rhinocal, calibration checking unit NR/CAL (Clinical/Research version only).

Hardware/Software requirements
The NR6 will work with any PC running up to and including Windows 10, which has a USB port. Any printer with a Windows driver should be suitable.
We can supply full systems including laptops, medical grade desktop PC’s & printers or the components needed to allow you to connect the NR6 to your own PC and printer.

Additional Options
A compatible Acoustic Rhinometer, the A1 is also available, either as a free standing instrument, or linked to the NR6, making a combined unit running NARIS software. This provides rhinometric and rhinomanometric measurements, with both results saved to a subject database. A USB footswitch, with which to initiate a measurement, can also be supplied.

Pressure Range 800pa 800pa
Flow Range 800cc/sec 800cc/sec
Accuracy 2% 2%
Dimensions 27x6x28cm 27x6x28cm
Weight 2kg 2kg
Electrical Safety BS EN 60601 BS EN 60601
CE Mark Class Class I Class I
Measures Active Anterior Resistance YES YES
Measures Vertex Resistance NO YES
Measures Active Posterior Resistance YES YES
Measures Effective Resistance NO YES
Complies with SC* Recommendations YES YES
Measures Standard/Broms/Rohrer Calculations YES YES
“Best Practise” Batch Facility NO YES
Data Export Facility NO YES

*SC = Standardisation Committee

The full product brochure is available to download here:

Nasal Investigation Brochure (466 KB)


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