Medical scissors are broadly called surgical scissors or operating scissors, but that umbrella term covers roughly 2,000 different types in use today. Most carry the name of the surgeon who invented them, which is why you’ll hear names like Mayo, Metzenbaum, and Lister rather than simple descriptive labels. The specific name tells medical professionals exactly what the scissors are designed to cut and how precise they need to be.
Mayo Scissors: Built for Tough Tissue
Mayo scissors are the heavy-duty option in the operating room. They have a sturdy build with a relatively short handle compared to the blade length, and they’re designed to cut through thick, resistant materials like ligaments, muscle, and the dense connective tissue (called fascia) that wraps around organs and muscles.
They come in two versions. Curved Mayo scissors handle heavy tissue cutting and can also push tissues apart during blunt dissection. Straight Mayo scissors serve more as utility scissors, used to cut sutures, adhesive strips, and other non-tissue materials. Because of this dual role, straight Mayo scissors see constant use throughout a procedure for tasks that would dull finer instruments.
Metzenbaum Scissors: For Delicate Work
Metzenbaum scissors look similar to Mayo scissors at first glance, but they’re noticeably finer and have a longer handle relative to their blade length. That longer handle gives the surgeon better control and reach when working with delicate tissue like the fat layer beneath the skin or thin connective tissue. They’re one of the most widely used surgical scissors, standard in abdominal surgery and many other specialties. A heavier variant exists for orthopedic and gynecological procedures where a bit more cutting force is needed without sacrificing the Metzenbaum’s precision.
Iris Scissors: Precision in Small Spaces
Iris scissors were originally designed for eye surgery, as the name suggests. They’re small, with short, sharp blades built for intricate cuts. Over time their use expanded well beyond ophthalmology. They’re now the most commonly used scissors for dissecting and undermining tissue on the head and neck, where precision matters and the working space is tight.
Stevens Tenotomy Scissors: Microsurgery Staple
Stevens tenotomy scissors are another fine-tipped instrument, with narrow blades and delicate jaws designed for dissecting small, sensitive structures. They’re commonly used in neurological, eye, and plastic surgeries. The straight version works well for superficial dissection near the skin surface, while the curved version reaches deeper tissue planes. They come with either rounded or pointed tips depending on the task.
Lister Bandage Scissors: Safe Against Skin
Lister bandage scissors are the ones you’ll most often see outside the operating room, in emergency departments, clinics, and first-aid kits. Their defining feature is a blunt, flattened tip on the bottom blade that slides safely between a bandage or dressing and the patient’s skin. The bottom blade is slightly longer than the angled upper blade, creating a design that lifts the material away from the body as it cuts. This makes it nearly impossible to accidentally nick the skin underneath, which is why paramedics and nurses reach for them when they need to quickly remove dressings, clothing, or tape.
Spencer Stitch Scissors: Removing Sutures
Spencer stitch scissors (also just called suture scissors) have a very specific job: removing stitches after a wound has healed. One blade has a small hook-shaped tip that slides under a suture and lifts it slightly before cutting. The hook also holds the suture in place so it doesn’t slip off the blade, making the removal quicker and more comfortable for the patient. These are common in outpatient clinics and wound-care settings.
How Surgical Scissors Are Classified
Beyond their named types, medical scissors follow a classification system based on three features:
- Tip shape: sharp-sharp, blunt-blunt, or sharp-blunt. Two sharp tips allow precise cuts into tissue. A blunt tip on one or both blades reduces the risk of accidentally puncturing something.
- Blade shape: straight or curved. Straight blades work for surface-level cutting and suture removal. Curved blades let surgeons work around structures and dissect deeper tissue planes.
- Cutting edge: smooth or serrated. Serrated edges grip slippery tissue to prevent it from sliding away during a cut.
So when a surgeon asks for “curved Metzenbaum scissors,” the name tells the team exactly what instrument to hand over: fine, curved blades on a long handle, meant for delicate tissue work. A separate pair of general-purpose scissors stays on the instrument tray for cutting sutures and non-tissue materials, because using tissue scissors on anything other than tissue dulls them quickly.
Specialty Scissors
Beyond the common types, highly specialized scissors exist for specific surgical fields. Vascular scissors have finely angled blades for working on blood vessels. Microscissors are miniaturized instruments used in neurosurgery under magnification. Rib scissors, as the name implies, are heavy enough to cut through bone and cartilage in the chest wall. Each is engineered for a narrow purpose, which is how the total count reaches roughly 2,000 distinct types across all of surgery.