Description
Kratz-Ziegler Knife Cannula
The Kratz-Ziegler knife cannula joins a small cutting tip with a hollow shaft. So you can cut and irrigate with one instrument and one entry. The listing gives two size values, 1.5mm and 25 gauge, which describe the blade and the tube.
Cutting and flow in one tool
Ziegler’s name is linked with fine knife needles for discission. Kratz added a cannula to this idea. In practice, the tip opens tissue such as an anterior capsule, while fluid keeps the chamber formed. This saves an extra pass through the wound.
Reading the two size values
The listing shows 1.5mm and 25 gauge. The 1.5mm figure most likely refers to the cutting tip, while 25 gauge describes the tube. Therefore, think of them as two parts of one design rather than two separate options. If you need a check before ordering, ask us. Quick facts:
- Tip value listed as 1.5mm
- Tube listed at 25 gauge
- Hub fits a syringe or irrigation line
- Steel body for repeat use
Handling a cutting cannula
Hold it like a fine pencil and support your wrist. Then set the flow before the tip enters the eye. Keep movements short, because the edge cuts as it travels. Also, withdraw along the same path to protect the wound.
Care for the edge and bore
Never let the tip touch hard trays or other steel. After use, flush the bore and soak it in a mild cleaner. Next, rinse and dry it, then fit a tip guard. It arrives non-sterile, yet the knife cannula returns to service after every clean and steam cycle.
Warranty for this Kratz-Ziegler pattern
If you find a flaw in materials or finish, the Kratz-Ziegler pattern has protection for three years against manufacturing defects. A tip dulled by months of service, however, counts as ordinary wear. The steel follows ASTM F899. To compare cutting cannulas, see the ophthalmology instrument range. You might also look at the Spizziri knife cannula. For order help, try our FAQs.
Professional use only. Our care page and delivery page cover the basics.






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