Jansen Middleton Septum Through Cutting Forceps | Curved or Straight Tip

What Jansen Middleton septum through cutting forceps are

There are two Jansen Middletons on this site and they are not two versions of the same instrument. They cut the same cartilage in two different ways, and the choice between them is one sentence long: a cup holds what it has just taken out, and a through cutting jaw leaves it in the wound, so the choice is about whether you want the fragment in your hand or on the drape.

This is the Jansen Middleton septum through cutting pattern. The jaw is a punch: a sharpened margin that closes against a flat face, so the cut goes all the way through in one closure. Google’s own description of the pattern is the useful one here, that through cutting jaws have “a punch or sharp margin configuration to cleanly cut through resilient tissue and cartilage structures without ripping”.

The phrase that matters in that sentence is WITHOUT RIPPING. Septal cartilage is tough and springy, and a jaw that does not quite close pulls rather than cuts: the fibers tear in a line away from the bite and take a piece of mucosa with them. A through cutting jaw either cuts or it does not, and there is nothing in between for the tissue to be dragged by.

On a Jansen Middleton septum forceps of either pattern the double action supplies the force. Two hinges rather than one roughly double the mechanical advantage, which is what makes a complete closure possible on the bony part of the septum at the back, reached through a nostril at an angle.

Our record for this Jansen Middleton septum pattern carries the curved or straight tip choice and nothing else. Rival listings for this pattern publish 3.0 by 13.0 mm jaws, 180 mm overall and a 130 mm working length, and cross reference themselves to Storz and VMueller part numbers. Those are their measurements. We publish ours or we publish none, and on this instrument we currently have none.

Key design features

The punch jaw

A sharp margin on one side closing against a flat face on the other. The cut is made by the edge meeting the anvil, not by two edges meeting each other, which is what makes it complete rather than nearly complete. It is also why the jaw has to be ground as a matched pair.

Cuts without ripping, and why that matters on a septum

A jaw that closes to a hair leaves the last fibers to tear, and on a septum those fibers run into the mucosa you are trying to keep. A through cutting jaw removes the halfway state. The fragment stays in the wound, which on most of this operation is not a problem, because it is being removed anyway.

Double action

Two hinges. Complete closure on resilient cartilage is a force problem before it is a sharpness problem, and the second hinge is what supplies it. Without it the surgeon squeezes harder and the edge still does not quite meet the anvil.

Curved or straight tip

Our own attribute. Straight for the anterior septum, curved for the posterior bend. On a through cutting jaw the curve matters slightly more than it does on a cupped one, because the whole jaw has to seat flat on the cartilage for the cut to be clean.

Which tip to order, and what we do not publish

One decision and one honest gap.

Where it is used

Septal resection, and sinus work where a clean margin matters more than the fragment.

What it holds back, and what it must not do

A punch jaw either cuts or it tears, and the right hand column is about staying on the right side of that.

How it compares with the rest of the family

The four cutting forceps in this family, and the question that separates them.

Materials and finish

Every Jansen Middleton septum through cutting forceps we make is cut from high quality medical grade stainless steel. The steel itself is made to a German specification. We do not publish a grade number. The number on a certificate tells a surgeon nothing about whether a sharpened margin still meets its anvil along the whole jaw after two hundred autoclave cycles, because a punch that meets at one end tears at the other, and the answer to that is in the making rather than in the alloy.

The margin and the anvil are ground as a pair and matched to each other, and that pairing is the instrument. A through cutting jaw assembled from two separately ground halves closes at one point and gaps along the rest, which turns a cutting instrument into a tearing one.

Both hinges are fitted together so they share the load. There is no sharp external edge anywhere on the outline, and the sharpness is all on the inside of the jaw where it belongs.

Caring for it

Wash both joints open and brush the jaw with the instrument closed and then open, because a punch jaw traps a thin layer of cartilage at the margin that is invisible when the jaws are shut.

Warm water and a soft brush, nothing abrasive on the margin itself. Autoclave with the tray. Hold the closed jaws against the light every so often: you should see no line of daylight along the margin, and if you do, the instrument is tearing rather than cutting and it needs regrinding or retiring.

Ordering and wholesale

Every Jansen Middleton septum through cutting forceps is made by Adas Instruments in our own workshop and sold direct, which is why the price sits where it does against the catalog houses. Order one for a single tray, or in quantity for a hospital list or a distributor line. We do OEM work under your own brand and your own item numbers. Send us a sample and we will hold a run to your pattern rather than ours. Stock items ship from our own workshop. Backorder items take 10 to 12 working days to make. Every instrument carries a three year replacement warranty against manufacturing defects. Production is controlled under an ISO 13485 quality management system.

Frequently asked questions

What are Jansen Middleton through cutting forceps used for?

Cutting through septal cartilage and thin bone with a complete, clean cut. The jaw is a punch, so there is no partial closure for springy cartilage to tear from, which is the fault this pattern exists to avoid.

Through cutting or spoon cups, which should I buy?

Through cutting if the cut edge is what matters. Spoon cups if the piece being removed matters, because the cups hold it and bring it out of the nose with the instrument. Plenty of septal trays carry both and use them in that order.

What does through cutting actually mean?

That a sharpened margin closes against a flat anvil and the cut goes all the way through. Google describes the jaw as “a punch or sharp margin configuration to cleanly cut through resilient tissue and cartilage structures without ripping”, and the ripping is what the design is avoiding.

What are the jaw dimensions?

We do not publish them. Our own record carries the curved or straight tip choice and nothing else, and the 3.0 by 13.0 mm and 180 mm figures on rival listings are their instruments, not ours. It is on our list to measure.

Is it the same instrument as a Gruenwald?

No. Both are through cutting and the Gruenwald is the lighter pattern with its own punch jaw. This one is double action and built around the septum; the comparison table above sets out the difference.

Related products and categories

For a jaw that holds the fragment it cuts, the Jansen Middleton with spoon shaped cups. For the same through cutting action on a lighter instrument, the Gruenwald nasal through cutting forceps. For fenestrated cups, the Takahashi nasal cutting forceps.

The rest of this family sits under nasal cutting, crusher and septum forceps, and the wider set for the operation is under rhinoplasty instruments.