Forceps are gripping tools used across medicine, dentistry, childbirth, and laboratory science to hold, move, or extract things that hands alone can’t manage with enough precision or control. They work on the same principle as a lever: two arms joined at a pivot point let you grasp objects firmly while controlling exactly how much pressure you apply. The specific design varies dramatically depending on the job, from delicate tweezers that handle microscope slides to heavy steel instruments that deliver babies.
How Forceps Work
All forceps share the same basic mechanics, but they come in two broad categories. Non-locking forceps (think of tweezers) are hinged at one end and stay open unless you squeeze them. Locking forceps look more like scissors, with a hinge in the middle and finger loops at one end. A small ratchet mechanism near the finger loops lets you clamp them shut and walk away; the jaws stay closed on their own, which is essential when a surgeon needs to hold something in place for minutes at a time.
The tips of forceps determine how gently or aggressively they grip. Smooth tips cause less damage to whatever they’re holding. Serrated or toothed tips bite into tissue more securely but cause more crushing. Surgeons choose the right forceps for the job based on that tradeoff: secure hold versus tissue damage.
Surgical Uses
In an operating room, forceps are everywhere. Thumb forceps, the non-locking kind held like a pencil, let a surgeon grip and reposition tissue with one hand while cutting or suturing with the other. The pencil grip gives fine control over pressure, which matters because squeezing too hard crushes tissue and slows healing. These are the most basic surgical forceps, and a surgeon’s non-dominant hand is rarely without one during a procedure.
For tasks that require a longer, hands-free hold, surgeons switch to ratcheted ring forceps. Allis forceps, for instance, have interlocking teeth along their tips that clamp down securely for extended periods. They’re effective but traumatic to tissue, so they’re typically reserved for tissue that’s already being removed. When gentler handling is needed, Babcock forceps use a series of grooves instead of teeth. They don’t grip as tightly, but they cause far less damage, making them better for tissue the patient is keeping.
Hemostatic forceps serve a different purpose entirely: clamping blood vessels to stop bleeding during surgery. These lock shut with a ratchet and stay in place until the surgeon is ready to tie off or cauterize the vessel.
Forceps in Childbirth
Obstetric forceps are curved metal instruments placed around a baby’s head during vaginal delivery to help guide the baby through the birth canal. About 1 in 8 births requires some form of assisted delivery, either with forceps or a vacuum device. A doctor may reach for forceps when the baby’s heart rate raises concern, the baby is positioned awkwardly (facing upward or turned to one side), the mother has a health condition like very high blood pressure that makes prolonged pushing risky, or labor has stalled and the baby shows signs of distress.
Some obstetric forceps are specifically designed to rotate a baby into the correct position before delivery. For premature births (before 36 weeks), forceps are generally preferred over vacuum extraction because they’re less likely to damage the baby’s softer skull. In fact, forceps are more likely than vacuum to achieve vaginal delivery on the first attempt. However, vacuum extraction has become the more popular instrument worldwide because it tends to cause less perineal tearing and fewer episiotomies for the mother.
The skill of the delivery team matters enormously. Hospitals that perform a high volume of assisted deliveries see significantly lower complication rates: severe perineal tears occur in about 8% of cases at high-volume hospitals compared to nearly 13% at low-volume ones. Neonatal injury rates follow a similar pattern, dropping from 4.6% to 3.1% at experienced centers. Before using forceps, the medical team discusses the reasons for an assisted delivery with the mother and gets her consent. If there’s any doubt about safety, the delivery may be moved to an operating theater where a cesarean section can be performed quickly if needed.
Dental Extraction Forceps
Dentists use a completely different family of forceps to remove teeth. These are heavy, plier-like instruments with beaks shaped to match specific teeth in specific locations. The design differences are precise. Forceps for upper front teeth have straight beaks that close flat together. Forceps for lower front teeth have beaks bent at nearly 90 degrees so the dentist can reach downward into the jaw. Canine and bicuspid forceps sit somewhere in between, with a 20-degree bend for upper teeth and a 45-degree bend for lowers.
Molar forceps are the most specialized. Upper molar forceps have two bends in their stem to reach the back of the mouth, and one beak features a narrow hook that fits into the natural fork between the tooth’s roots. Lower molar forceps are built heavier, with projections on both beaks and curved grips for stronger clamping force. Their design lets the dentist lift the tooth upward out of its socket during extraction.
Beak shape also affects success. Forceps with dramatically curved beaks tend to pinch the tooth only at the gum line, which can snap the crown off and leave the root behind. Parallel beak designs grip more of the tooth’s surface, giving a more secure hold and a cleaner extraction.
Laboratory and Scientific Uses
Outside of clinical settings, forceps are one of the most frequently used tools in research laboratories. Biologists use them to dissect small organisms, place microscopic samples onto slides, and transfer delicate plant tissues without crushing them. In cellular biology, forceps handle membranes and other materials too fragile for gloved fingers to manage reliably. Chemistry and analytical labs rely on them for placing filter papers, dropping small samples into test tubes, and positioning materials inside reaction vessels. In all of these cases, the value of forceps comes down to the same thing: they provide finer control and more precision than human fingers can achieve alone, especially when the objects involved are tiny, fragile, or hazardous to touch directly.