Surgical scissors go by many names depending on their design and purpose. The most common types you’ll encounter are Mayo scissors, Metzenbaum scissors, and iris scissors, but roughly 2,000 different varieties exist across surgical specialties. Each is named after the surgeon who designed it or the task it was built for, and the name tells operating room staff exactly which instrument to hand over.
Mayo and Metzenbaum: The Two Workhorses
If there are two names worth knowing, it’s these. Mayo scissors and Metzenbaum scissors are the most widely used surgical scissors, and they serve very different roles.
Mayo scissors have short, sturdy blades with wide, blunt tips. They’re built for cutting through tough connective tissue and fascia (the fibrous layer surrounding muscles and organs), and they’re also commonly used to cut sutures. Their robust design makes them a go-to for general surgery when the tissue puts up resistance.
Metzenbaum scissors are the opposite in feel. They have long, slender blades with a tapered profile and a high shank-to-blade ratio, meaning the handles are much longer relative to the cutting edge. This gives the surgeon fine control for delicate dissection. You’ll find Metzenbaum scissors in plastic surgery, abdominal procedures, cardiovascular operations, and gynecological work, anywhere precision matters more than cutting force. Heavier versions exist for orthopedic and gynecological cases where a bit more strength is needed.
Scissors for Eye and Microsurgery
Microsurgical scissors are a category of their own. Many of them replace the traditional finger-loop design with a spring mechanism that opens the blades automatically, letting the surgeon squeeze to cut and release to open. This allows one-handed, ambidextrous use and extremely fine control in tight spaces.
The most common names in this group:
- Iris scissors were originally designed for intraocular work but are now used across general ophthalmic surgery. They have sharp, narrow blades available in straight or curved options.
- Vannas scissors are ultra-fine, spring-operated scissors for cutting membranes and retinal layers. Their lightweight build makes them a standard tool in microsurgery.
- Castroviejo scissors have fine tips and spring-action handles, commonly used in corneal and scleral surgery. They come in straight or curved styles.
- Westcott scissors have short, slightly curved blades suited for conjunctival and muscle dissection, particularly in strabismus (crossed-eye) surgery.
- Tenotomy scissors have fine, narrow blades designed for dissecting soft tissues where delicate structures need to be preserved. Stevens tenotomy scissors are a well-known version of this type.
Vascular Scissors
Blood vessels demand their own instruments. Potts-Smith scissors are the classic example, designed specifically for making precise incisions in vessel walls during vascular surgery. They have angled blades that let the surgeon open a blood vessel along its length with control, which is essential during bypass procedures and other vascular repairs.
Bandage and Suture Scissors
Not all surgical scissors are used during the operation itself. Two common types are designed for post-operative care and wound management.
Lister bandage scissors have angled blades with a blunt tip on the lower blade. That blunt end slides safely along the skin while the upper blade cuts through bandage material, so there’s minimal risk of nicking the patient. These are a staple in wound care and emergency rooms.
Littauer suture scissors have a distinctive small hook on one blade. The hook slips under a suture, lifts it away from the skin, and the opposing blade cuts it cleanly. This makes suture removal fast and safe without tugging or pulling on healing tissue.
Tip Combinations and What They Mean
Beyond the named types, surgical scissors are also classified by the shape of their blade tips. You’ll see them described as sharp/sharp, blunt/blunt, or sharp/blunt.
A sharp/blunt combination pairs one blade that cuts precisely with another that pushes tissue aside rather than piercing it. This reduces the risk of accidentally puncturing a blood vessel or organ during dissection. Sharp/blunt scissors are especially useful in gynecology, urology, and general surgery for tasks like clearing adhesions, dissecting tissue planes, and performing controlled cuts near sensitive structures.
Blunt/blunt tips offer the most safety when working near fragile organs. Sharp/sharp tips provide maximum cutting precision but carry more risk of unintended tissue damage, so they tend to be reserved for situations where the surgeon has a clear field.
Blades also come straight or curved. Curved blades improve visibility because they angle away from the surgeon’s hand, and they follow natural tissue contours better. Straight blades work well for surface cuts and suture removal.
What Handle Colors Tell You
In the operating room, handle color is a quick visual code. Gold-plated handles indicate the scissors have tungsten carbide inserts on the cutting edges. Tungsten carbide is significantly harder than standard stainless steel, so these scissors stay sharp longer and cut more cleanly through tough tissue.
Black handles signal “SuperCut” scissors. These have one micro-serrated blade that grips the tissue gently and one razor-sharp blade that slices through it. The combination prevents tissue from slipping during the cut, which is particularly useful when working with slick or fibrous material.
Specialty and Robotic Instruments
Some scissors are built for very specific anatomical challenges. Rib scissors, for instance, are heavy-duty instruments designed to cut through costal cartilage during thoracic surgery. McIndoe scissors are a longer, more slender variation used for deep dissection in confined body cavities.
Robotic surgical systems like the da Vinci platform use their own proprietary cutting instruments. These are miniaturized scissors mounted on articulating “wrist” mechanisms (called EndoWrist instruments in the da Vinci system) that fit through ports as small as 8 millimeters. The surgeon controls them from a console, and the robotic arms translate hand movements into precise cuts inside the body. The scissors themselves function like traditional designs but are engineered for the mechanical demands of robotic articulation.