Halsted Mosquito Forceps, Straight or Curved, 12.5 cm and 14.5 cm

What mosquito forceps are

Mosquito forceps are the smallest hemostats on a standard tray. They close on a bleeding vessel and hold it shut while the surgeon ties or coagulates, and the Halsted pattern is the one most people mean when they say the name. The jaws are short and narrow, the shanks are slender, and the ring handles carry a ratchet that holds the clamp closed once it is set. Surgeons also list the pattern as mosquito hemostatic forceps, as Halsted artery clamps, and simply as mosquito clamps.

The name is not a brand. It describes the shape: the jaws taper to a point fine enough that somebody in the last century thought of a mosquito, and the word stuck across every catalogue in the trade. William Halsted put his name to the pattern, which is why the same instrument turns up under both spellings, Halsted and halstead mosquito forceps, on roughly as many pages.

Key design features of the Halsted pattern

Three things make the pattern behave the way it does, and all three are visible in the hand.

• Serrations the full length of the jaw. The bite is spread along the whole working surface rather than concentrated at the tip, so a vessel is held rather than cut.
• A ratchet on the ring handle. The clamp stays shut with no hand on it, which frees both hands for the tie.
• A box lock joint. The two halves pass through each other rather than sitting side by side, so the jaws meet squarely and stay aligned after years of use.

You can order the jaws straight or curved. Straight jaws give a direct line onto a vessel you can see. Curved jaws let you reach around a tissue edge and still close square, which is why most trays carry both.

Halsted mosquito forceps sizes and build options

Two lengths, each in a straight and a curved tip. The chart below is the full range and nothing is listed that we do not build.

Where mosquito forceps are used

What the specialties below share is scale. Every one of them works in a field where a full size artery clamp would fill the wound and hide the target.

What the jaws hold

A hemostat is judged on what it can take hold of without damaging it. This pattern is built for the small end of that range.

How mosquito forceps compare with other clamps

The question surgeons ask most often is where this pattern stops and the next one starts. Length and jaw weight answer it.

Materials and finish

Each pair is made from high quality medical grade stainless steel, hardened at the jaws and box lock so the serrations keep their edge and the joint stays tight. The steel itself is made to a German specification. The finish is satin rather than mirror, because a satin surface does not throw operating light back into the surgeon’s eyes.

Care and sterilization

Open the ratchet before cleaning and before sterilizing. A clamp autoclaved in the closed position traps soil in the box lock and puts the joint under load at temperature. Rinse cool first, because hot water sets protein. Use a soft brush along the serrations rather than across them, dry fully, and store open. A drop of instrument milk on the joint once a week keeps the action smooth.

Ordering and wholesale

Order by item code ADM-220.12, naming the length and the tip you want. Adas Instruments supplies hospitals, surgery centers, distributors and instrument resellers across the United States, and wholesale quantities are quoted on the set rather than the piece. Backorder items dispatch in 10 to 12 working days. Every instrument carries a three year replacement against manufacturing defects. Production is controlled under an ISO 13485 quality management system.

Frequently asked questions

Why is it called a mosquito forceps?

The jaws taper to a fine point that reminded earlier surgeons of a mosquito, and the name has stayed in the catalogues ever since. It describes the shape of the tip, not the maker and not the material. The pattern is also named after William Halsted, so the same instrument is sold as halsted mosquito hemostatic forceps and as a mosquito hemostat.

What is the difference between Kelly and mosquito forceps?

Size and serration. This pattern runs 12.5 cm to 14.5 cm with fine jaws serrated their full length. A Kelly is longer and heavier and its serrations cover only part of the jaw, so it is chosen for larger vessels and deeper planes. We build the mosquito pattern and the Crile pattern; we do not make a Kelly.

Are mosquito forceps the same as hemostats?

A hemostat is any clamp used to stop bleeding, so every mosquito is a hemostat but not every hemostat is a mosquito. Mosquito is the small end of the family. When a supplier lists mosquito hemostatic forceps or a mosquito clamp, it is this instrument under another name.

Should I order straight or curved?

Straight for a vessel you can see and reach in a direct line, curved for one that sits behind a tissue edge. Most trays carry both in each length, and surgeons who buy a set usually take two straight to one curved. Both tips are available in 12.5 cm and 14.5 cm.

What are mosquito forceps used for?

They clamp a small blood vessel and hold it shut while the surgeon ties or coagulates, and they hold delicate tissue, suture tags and small tubing in a confined field. On a general tray this is the first clamp reached for on a small bleeder. The 12.5 cm and 14.5 cm lengths cover most of that work.

Related products and categories

Surgeons who work with mosquito forceps usually set them beside the Hartmann mosquito forceps at 10 cm, the micro pattern for work under magnification, and the 18 cm delicate clamp when the bleeding point sits deep. The whole family sits in hemostats and grasping forceps, and this pattern is also listed under breast surgery instruments.