PulmTools clinical reference

Tracheostomy Tube Size Chart

Shiley, Portex, Bivona, and Jackson sizing and dimensions

Find a tube by product code or size label, then compare what the label means with the tube and inner-cannula dimensions. A “size” can refer to different measurements across products, so this reference keeps the labels separate.

Find

Brand · model · code

Search the code printed on the flange, package, or product label.

Compare

ID · OD · length

See reported dimensions alongside the manufacturer’s own size label.

Understand

Jackson · ISO · cannula

Keep sizing systems and inner-cannula dimensions distinct.

Product identification reference only. It does not recommend a tube for an individual patient or prescribe how a facility should populate an LDA field. Confirm the exact product and current dimensions in its instructions for use.

Why the number can mislead

Two tubes called “6” can carry different size information

These examples show what each manufacturer label describes. They are not a cross-brand conversion or an equivalence recommendation.

Portex Blue Line Ultra

Size 6.0 · REF 100/800/060

Tube ID

6.0 mm

As listed for the tube

ID with inner cannula

5.0 mm

From the cited sizing chart

Outer diameter

9.2 mm

Tube OD

Length

64.5 mm

Tube length

Shiley Flex

REF 6CN75H · current suffix may be A

Jackson size

6

First number in the Shiley Flex code

ISO / outer-cannula ID

7.5 mm

The 75 digits identify this value

Inner-cannula ID

6.5 mm

Separate measurement

Outer diameter

10.8 mm

For this configuration

Medtronic lists 74 mm length for the current 6CN75A listing; verify the exact code and package revision.

Portex source: Smiths Medical product guide and Austin Health chart. Shiley source: Medtronic product specifications and code guide.

Search the reference

Tube labels and dimensions by model

This first release covers named configurations from the linked references. Each row keeps product-family size labels, codes, and dimensions in separate fields.

Showing 24 product configurations from selected references.

Shiley Flex adult, cuffed, disposable inner cannula

Flexible adult tracheostomy tube with TaperGuard cuff

Manufacturer labelREF / product codePublished tube IDInner-cannula IDODLengthOther label details
Jackson 4 / ISO 6.5 mm4CN65A / 4CN65H in prior regional listings6.5 mm outer-cannula ID5.5 mm9.4 mm62 mmThe code starts with the Jackson size; its following digits indicate ISO size / outer-cannula ID.
Jackson 5 / ISO 7.0 mm5CN70A / 5CN70H in prior regional listings7.0 mm outer-cannula ID6.0 mm10.1 mm68 mmThe code starts with the Jackson size; its following digits indicate ISO size / outer-cannula ID.
Jackson 6 / ISO 7.5 mm6CN75A / 6CN75H in prior regional listings7.5 mm outer-cannula ID6.5 mm10.8 mm74 mmThe code starts with the Jackson size; its following digits indicate ISO size / outer-cannula ID.
Jackson 7 / ISO 8.0 mm7CN80A / 7CN80H in prior regional listings8.0 mm outer-cannula ID7.0 mm11.4 mm77 mmThe code starts with the Jackson size; its following digits indicate ISO size / outer-cannula ID.
Jackson 8 / ISO 8.5 mm8CN85A / 8CN85H in prior regional listings8.5 mm outer-cannula ID7.5 mm12.2 mm79 mmThe code starts with the Jackson size; its following digits indicate ISO size / outer-cannula ID.
Jackson 9 / ISO 9.0 mm9CN90A / 9CN90H in prior regional listings9.0 mm outer-cannula ID8.0 mm12.7 mm79 mmThe code starts with the Jackson size; its following digits indicate ISO size / outer-cannula ID.
Jackson 10 / ISO 10.0 mm10CN10A / 10CN10H in prior regional listings10.0 mm outer-cannula ID9.0 mm13.8 mm79 mmThe code starts with the Jackson size; its following digits indicate ISO size / outer-cannula ID.

Source: Medtronic — Shiley Flex adult specifications and sizing guide. Manufacturer product listing. Disposable-inner-cannula product codes have used both H and A suffixes in some regions; verify the package code in use.

Portex Blue Line Ultra, cuffed, inner cannula

Blue Line Ultra cuffed tracheostomy tube

Manufacturer labelREF / product codePublished tube IDInner-cannula IDODLengthOther label details
6.0 mm100/800/0606.0 mm5.0 mm ID with inner cannula9.2 mm64.5 mmCuff resting diameter: 20 mm.
7.0 mm100/800/0707.0 mm5.5 mm ID with inner cannula10.5 mm70.0 mmCuff resting diameter: 24 mm.
7.5 mm100/800/0757.5 mm6.0 mm ID with inner cannula11.3 mm73.0 mmCuff resting diameter: 30 mm.
8.0 mm100/800/0808.0 mm6.5 mm ID with inner cannula11.9 mm75.5 mmCuff resting diameter: 30 mm.
8.5 mm100/800/0858.5 mm7.0 mm ID with inner cannula12.6 mm78.0 mmCuff resting diameter: 30 mm.
9.0 mm100/800/0909.0 mm7.5 mm ID with inner cannula13.3 mm81.0 mmCuff resting diameter: 30 mm.
10.0 mm100/800/10010.0 mm8.5 mm ID with inner cannula14.0 mm87.5 mmCuff resting diameter: 30 mm.

Source: Smiths Medical / Portex product guide, hosted by University of Rochester Medical Center. Manufacturer product guide for Blue Line Ultra product codes and tube dimensions. Inner-cannula ID values are cross-checked against the Austin Health chart below. The current product range and local availability may differ; confirm against current labeling. Additional check: Austin Health — Tracheostomy sizing chart (2024).

Bivona TTS adult, cuffed

TTS adult tracheostomy tube

Manufacturer labelREF / product codePublished tube IDInner-cannula IDODLengthOther label details
5.0 mm6701505.0 mmNot listed in adult TTS table7.4 mm60.0 mmCuff resting diameter: 9.5 mm; 100° tube angle.
6.0 mm6701606.0 mmNot listed in adult TTS table8.8 mm70.0 mmCuff resting diameter: 11.0 mm; 100° tube angle.
7.0 mm6701707.0 mmNot listed in adult TTS table10.0 mm80.0 mmCuff resting diameter: 12.0 mm; 100° tube angle.
7.5 mm6701757.5 mmNot listed in adult TTS table10.5 mm80.0 mmCuff resting diameter: 12.5 mm; 100° tube angle.
8.0 mm6701808.0 mmNot listed in adult TTS table11.0 mm88.0 mmCuff resting diameter: 13.0 mm; 100° tube angle.
8.5 mm6701858.5 mmNot listed in adult TTS table11.8 mm88.0 mmCuff resting diameter: 14.0 mm; 100° tube angle.
9.0 mm6701909.0 mmNot listed in adult TTS table12.3 mm98.0 mmCuff resting diameter: 14.5 mm; 100° tube angle.

Source: ICU Medical — Bivona Silicone Tracheostomy Tubes Product Catalog. Manufacturer catalog; this table is specifically the adult TTS cuffed family.

Pilling Jackson #6 metal tube configurations

Stainless-steel tracheostomy tube set; outer tube, inner tube, and obturator

Manufacturer labelREF / product codePublished tube IDInner-cannula IDODLengthOther label details
Jackson Improved #6 · regular5180357.2 mm manufacturer-listed IDCatalog does not list a separate fitted-IC ID10.0 mm69 mmJackson #6 is the named size; original/improved design and length are separate identifiers.
Jackson Original #6 · regular5181357.2 mm manufacturer-listed IDCatalog does not list a separate fitted-IC ID10.0 mm69 mmJackson #6 is the named size; original/improved design and length are separate identifiers.
Jackson Improved #6 · short5182307.2 mm manufacturer-listed IDCatalog does not list a separate fitted-IC ID10.0 mm56 mmJackson #6 is the named size; original/improved design and length are separate identifiers.

Source: Teleflex — Pilling Surgical Instruments catalog. Manufacturer catalog. The table shows selected Jackson #6 stainless-steel configurations; original/improved design, length, adapter, and fenestration identify distinct products. The catalog separately explains the broader Jackson size system. Additional check: Teleflex — current Pilling Jackson product listings.

Reading labels

What does “size” mean here?

Jackson size
A numbered sizing convention used by Jackson metal tube families and in the leading number of Shiley Flex product codes. A Jackson size by itself does not identify a specific model or length.
ISO size
A manufacturer-reported size designation. For Shiley Flex, the code guide identifies the digits after the first number as the ISO size and outer-cannula ID.
Tube ID and inner-cannula ID
The tube’s listed ID and the ID of a fitted inner cannula are distinct fields. The available lumen with an inner cannula in place can therefore be smaller.
OD and length
Separate dimensions. Length definitions and configurations can vary, especially for adjustable and extended-length models.

A question for LDA field definitions

What does the EHR’s “size” field store?

A field labeled “size” may be used for a manufacturer’s printed size, a named sizing system, or a diameter measurement. Those are not always the same value.

The examples above make the difference visible: a Portex Blue Line Ultra size 6.0 lists 6.0 mm tube ID and 5.0 mm ID with its inner cannula; the Shiley Flex code 6CN75H includes Jackson size 6 and ISO / outer-cannula ID 7.5 mm, with a separately listed 6.5 mm inner-cannula ID.

The resource does not prescribe an entry. It gives clinical teams and EHR builders the product details needed to ask which meaning their local field is intended to capture.

Two uses of one name

Jackson sizing and Jackson metal tubes

Jackson appears in two contexts in this reference. It is a numbered sizing convention, and it is also the name used for metal tube product families. The table shows three Pilling Jackson #6 examples: original regular-length, improved regular-length, and improved short-length. Each is a distinct catalog configuration.

Teleflex/Pilling lists the #6 examples with a 7.2 mm ID and 10.0 mm OD, while their lengths and product codes distinguish the configurations. Its catalog defines ID by reference to the inner tube’s distal end. Fenestrated, adapter, and other Jackson models have their own catalog entries and are not interchangeable based on the #6 label alone.

Sources and scope

Dimensions are transcribed from the product-family references linked beside each table. The scope is deliberately model-specific: “Shiley,” “Portex,” “Bivona,” or “Jackson” alone is not enough to identify every configuration. Manufacturer documentation, package labeling, and local availability can change.

Reviewed against linked product documents on September 29, 2026. No individual patient sizing, replacement, or EHR charting recommendation is provided.