A1 Acoustic Rhinometer

Acoustic Rhinometers allow a very rapid non invasive examination of the nasal cavity using a sound pulse technique.

The A1 functions as reflections of the sound pulse, produced by changes in the cross sectional area within the nose are processed by a PC to provide a plot of area, as a function of distance, into the nose. Numerical information such as the area at certain distances, and volumes between certain points in the nose, can also be presented.

Key Benefits the A1 Rhinometer can provide:

  • Animal, Pediatric and Adult sound tubes
  • PC Based with Clinical and Research versions
  • Pre/Post challenge or operative comparisons
  • Can be interfaced through a USB PC connection
  • Software available for up to and including windows 10
  • Option of open/closed, child/adult or animal sound tubes
  • Anatomical or conical nose pieces for airtight connection without distortion

The Standard A1 Clinical and The A1 Clinical/Research Version
Two versions of the system are available to provide facilities tailored to particular applications which include:

  • Surgical pre/post comparisons
  • Nasal symmetry assessment
  • Allergen challenge recording
  • Sleep studies
  • Quantifying changes due to Surgery, Decongestants and Medication

The Standard Clinical Model provides a patient database, software calibration, colour selection facility for screen and printout, patient record screen editing, adjustable scale setting, calculation of the first two minimum areas, the distance at which minimas were found, the volume between any three distances, and user defined printout headings. A starter pack of consumables is also supplied.

The Clinical/Research Version provides all of the features mentioned above, that the Clinical model does, but with the addition of also providing:

  • Result validation facility
  • System performance checking/adjustment tools
  • Data export facilities
  • Capability of adding additional sound tubes
Available Options
Small animal sound tubes, or those appropriate for use with small children can also be supplied.
A compatible Rhinomanometer, the NR6 is also available, either as a free standing instrument, or linked to the A1, making a combined unit running NARIS software. This provides rhinomanometric and rhinometric measurements, with mixed results saved to a subject database or output to a common report.
A USB footswitch, with which to initiate a measurement, can also be supplied.

Device Accessories
Five pairs of medium and large anatomically conformed nosepieces, and fifteen sets of 8mm conical nosepieces are supplied with the system

Hardware Requirements
We are able to supply complete systems including a PC & Printer. Alternatively we will supply the components required to install the A1 in your PC. The minimum PC requirement is for a system running up to and including Windows 10. Any printer with a Windows driver should be suitable.

Clinical Clinical Research
Distance Range – Standard Sound Tube 12cm 12cm
Distance Range – Optional Small Animal Sound Tube 5cm 5cm
Distance Range – Optional Child Sound Tube 10cm 10cm
Area Range – Standard Sound Tube 0.1–20cm² 0.1–20cm²
Area Range – Optional Small Animal Sound Tube 0.001–0.3cm² 0.001–0.3cm²
Area Range – Optional Child Sound Tube 0.01–5cm² 0.01–5cm²
Volume Accuracy – Distance 0–5cm 2% 2%
Volume Accuracy – 5cm End 5% 5%
Information Reported – Standard Software 2x min areas, 3x volumes 2x min areas, 3x volumes
Information Reported – Multiple Report NO YES – Volumes & Areas
Information Reported – Data Export Facility NO YES
Product Dimensions: 27 x 6 x 28cm 27 x 6 x 28cm
Product Weight ~2Kg  ~2Kg
CE Mark Class IIa IIa
Complies with SC* Recommendations YES YES
‘Best Practise’ Batch Facility NO YES
Electrical Safety BS EN 60601 BS EN 60601

* SC – Standardisation Committee

The full product brochure is available to download here:

Nasal Investigation Brochure

A1 Acoustic Reference List Here


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