Freer Septum Gouge | Atraumatic Concave Blade | Nasal Bone Scraping

What the Freer septum gouge is

The Freer septum gouge is a nasal bone gouge. It scoops and reshapes the soft cancellous bone of the septum, and it lifts the mucous membrane off the bony base underneath without tearing it, which is the job that gives the instrument its name in the first place.

It belongs to the suite of septal instruments developed by the American otolaryngologist Otto Freer, and like the rest of that family it is built for shallow controlled work rather than for force. The blade is a concave trough beveled on one face only, so it takes a shaving off the surface of the bone instead of biting into it. Set the flat face against the tissue you are keeping and the cut happens on the other side of the edge.

Adas Instruments makes it with a straight shaft and a flat serrated handle, in 4mm and 6mm tip widths. Surgeons look for it as a septum gouge, a bone gouge and a surgical gouge, and all three describe what it does.

Key design features of the concave Freer gouge

A concave trough beveled on one side

The bevel is ground on a single face. That makes the blade directional: one side is flat and can be laid against mucosa or a graft that is staying, and the other side carries the cutting angle. A double beveled blade cuts both ways and has to be held off the tissue by hand, which is harder to do in a cavity you can barely see into.

Two tip widths, 4mm and 6mm

4mm suits a narrow spur and work close to the junction of bone and cartilage. 6mm spans a broader maxillary crest and takes it down in fewer passes. Both are ground on the same shaft and handle so they feel identical in the hand, which matters when the two are swapped inside a single case.

A straight shaft, not a bayonet

This is the deliberate difference from the Killian patterns. A straight shaft gives a direct line of force for shallow work near the nasal entrance, where the depth does not yet justify giving up push for visibility. Deeper on the septum the bayonet shafts take over.

A flat serrated handle

The handle is flat with horizontal serrations across it, which stops the instrument rolling and gives a stable pinch grip for the shaving strokes this gouge is used for. It also takes a mallet at the end when the bone turns out denser than expected.

Freer septum gouge tip widths, 4mm and 6mm

Two widths are stocked and they are ordered per instrument rather than supplied as a pair. Both are the same overall pattern; only the blade changes.

Most septal trays carry the 4mm as the default and add the 6mm where broad crest deviations are common. If only one is being bought, the 4mm is the more generally useful of the two.

Where the Freer septum gouge is used

This is where a Freer septum gouge earns its place. The rows are procedures, not claims: it is a nasal and septal instrument and it is not a dental chisel or a woodworking gouge, both of which share the words.

Across all of these the gouge is normally used after a Freer elevator has raised the mucoperiosteum, and the two instruments are often reached for in sequence by the same hand.

What it cuts, and what it has to leave alone

The reason this pattern is called atraumatic is the single bevel and the shallow trough together. It is built to take bone in layers with the lining still lying against the flat face of the blade.

That fourth row is why a gouge is used here rather than a rongeur. A rongeur closes on whatever sits between its jaws; a gouge only removes what is ahead of its edge.

How it compares with the rest of the septum family

There are two Freer instruments in this range and they are not the same tool, which is the question most often asked about them. One scoops and one cuts.

So the short answer on the two Freers: the gouge is for shaping and lifting, the chisel is for dividing. A tray doing septoplasty regularly carries both, and the gouge is the one that gets picked up more often.

Freer septum gouge materials and finish

The gouge is ground from high quality medical grade stainless steel, hardened at the blade so a single beveled edge keeps its angle through repeated sharpening, and left softer along the shaft so it takes a mallet tap without setting a bend. The steel itself is made to a German specification.

The finish is satin, not mirror. Inside a nostril lit by a headlamp a polished surface throws light back at the surgeon while satin scatters it, and satin also shows bone paste and dried blood clearly when the instrument is being checked.

Caring for a Freer septum gouge

Rinse the trough under cool running water straight after the case. Cancellous bone turns to a paste that sets hard in a concave blade, and two seconds with a soft nylon brush at the sink saves a long clean afterwards.

Ultrasonic clean in a neutral pH enzymatic solution, rinse in deionized water, dry fully before pouching. Tap water dried on a blade is the usual cause of pitting on an otherwise well kept instrument.

Autoclave at 134 degrees Celsius. Store with the blade clear of other instruments. On a single beveled edge the first thing to go is the corner of the bevel, and it usually goes against another instrument in a tray rather than against bone.

Ordering a Freer septum gouge, and wholesale

The Freer septum gouge is supplied as a single instrument, item code AM-80.04, with a 4mm or a 6mm concave tip on a straight shaft. Both widths are made in our own workshop to the same handle pattern, so a tray can be built with matching instruments across the septum family.

Wholesale and distributor pricing is available on quantity, and larger orders can carry a laser marked hospital or practice reference at no separate tooling cost. Tell us the widths, the quantity and the marking and we will quote it together.

Item code AM-80.04. Every instrument carries a three year replacement warranty against manufacturing defects. Stock items ship from our own workshop. Backorder items take 10 to 12 working days to make. Production is controlled under an ISO 13485 quality management system.

Frequently asked questions

What is a Freer septum gouge used for

It scoops and reshapes the soft cancellous bone of the nasal septum and lifts the mucous membrane off the bony base without tearing it, in septoplasty, rhinoplasty and nasal reconstruction. The single beveled concave blade takes bone in shallow layers rather than splitting it.

What are the uses of a bone gouge instrument

A bone gouge removes bone by scooping. In the nose that means shaving a crest down, clearing a spur and freeing graft material. The same principle is used on the mastoid and on long bone elsewhere in surgery, but those instruments are wider and longer and are not interchangeable with a septum gouge.

What tip widths does the Freer septum gouge come in

This instrument is made in 4mm and 6mm. The 4mm suits a narrow spur and work at the bone and cartilage junction; the 6mm spans a broader maxillary crest. Both are ordered per instrument rather than as a pair.

What is the difference between a Freer gouge and a Freer chisel

The blade. The gouge is a concave trough and it scoops, so it shapes bone and lifts membrane. The chisel is flat and it splits along a line, so it divides bone and cartilage cleanly. They are used in the same operation for different steps.

What is the tool surgeons use to cut nasal bone

A gouge scoops, a chisel splits along a line and an osteotome is the heavier instrument used on the nasal bones rather than the septum. For the septum itself the gouge and the chisel are the two that do the work.

Related products and categories

• Freer septum chisel
• Ballenger Hajek septum chisel
• Killian-Claus nasal septum gouge

Browse the full range of osteotomes, chisels and gouges, or see the wider set of rhinoplasty instruments this instrument belongs to.