Three reference points
Using measurements to understand the range
The N, W and L measurements help relate the patient’s anatomy to the dimensions of each standard size.
NHeight of the nostril opening.
WDistance between the two nostril openings.
LLength of the conformer, adjustable in accordance with the instructions for use.
Illustrations from the brochure
Locating N, W and L
Children
BB‑RHINO size table
Fourteen standard paediatric sizes, with dimensions in millimetres.
| Size | N (mm) | W (mm) | L (mm) |
|---|---|---|---|
| 1 | 6.4 | 8.3 | 17.8 |
| 2 | 6.7 | 8.7 | 18.3 |
| 3 | 7.0 | 9.0 | 18.8 |
| 4 | 7.5 | 9.8 | 20.4 |
| 5 | 8.0 | 10.6 | 22.0 |
| 6 | 8.5 | 11.4 | 23.5 |
| 7 | 9.0 | 12.2 | 25.0 |
| 8 | 9.5 | 13.0 | 26.5 |
| 9 | 10.0 | 13.8 | 28.0 |
| 10 | 10.5 | 14.5 | 30.5 |
| 11 | 11.0 | 15.3 | 33.0 |
| 12 | 11.8 | 16.0 | 36.0 |
| 13 | 12.5 | 16.7 | 37.0 |
| 14 | 13.2 | 17.4 | 38.0 |
Adults
AD‑RHINO size table
Five standard adult sizes, with dimensions in millimetres.
| Size | N (mm) | W (mm) | L (mm) |
|---|---|---|---|
| 1 | 14.0 | 18.1 | 40.0 |
| 2 | 15.0 | 20.1 | 42.0 |
| 3 | 16.0 | 21.5 | 45.0 |
| 4 | 17.0 | 21.8 | 47.0 |
| 5 | 17.6 | 22.5 | 49.0 |
Frequently asked questions
Using this guide
Is the table sufficient to select a size?
No. It must be read alongside the sizing gauge, the prescription and the instructions for use.
How should the decimal values be read?
Dimensions are given in millimetres, with a decimal point in this English version of the table.
What if no standard size is suitable?
Contact BONE 3D: patient-specific manufacture may be considered on request.
This guide is intended to help healthcare professionals read the dimensional information. It is not a stand-alone clinical protocol.