Kelly clamp, invented by Howard Kelly, has similar functions but it can clamp larger vessels due to the slightly larger jaw.Accordingly, the nomenclature of surgical instruments follows certain patterns, such as a description of the action it performs (for example, scalpel, hemostat), the name of its inventor(s) (for example, the Kocher forceps), or a compound scientific name related to the kind of surgery (for example, a tracheotomy is a tool used to perform a tracheotomy). Classification
There are several classes of surgical instruments:
Graspers, such as forceps (non-locking forceps/ grasping forceps, thumb forceps, pick-ups) Used for tissue or object grasping. Forceps are categorized into toothed or non-toothed at the tip. (e.g.,Tissue forceps, Adson forceps, Bonney forceps, DeBakey forceps, Russian forceps) 
Clamps (locking forceps)
Clamps stabilize or hold tissue and objects in place. They can be used for traumatic or atraumatic purposes. (e.g., Crile hemostat, Kelly clamp, Kocher clamp)
Surgical scissors
Tool for tissue cutting, dissection, and suture. Straight and curved scissors are used for cutting different structures. (e.g. Mayo scissors, Metzenbaum scissors, Pott’s scissors, Iris Scissors). Bone cutters: unpowered or powered saws, drills and pliers-like devices
Needles/Sutures
Tools used for suturing dissection sites or closing cuts. Needles have different shapes (e.g. j shape, ½ circle, straight) and cutting edges (tapered - round, conventional cutting - triangular) depending on the application and areas of the suture. Sutures can be categorized based on different sizes (e.g.#5-#11, higher numbers represent larger suture diameter) and types (absorbable and nonabsorbable and braided and non-braided) as well.
The vascular atraumatic forceps (DeBakey)were widely used for grasping vascular tissue and causing minimal damage to the vessels. This invention led to the development of the Dacron aortic graft for the repair of aortic aneurysms. Around the mid 1900s, Alfred Washington Adson, a pioneer in neuroscience at Mayo Clinic, invented Adson forceps that allows the lifting and removal of neural tissue. Hemostat/clamp
Hemostats are forceps that aim to obliterate the lumen of vessels and to obtain adherence to the crushed surfaces and vascular hemostasis. Originally, this notion of crushing did not exist and arterial catch forceps simply clamped vessels temporarily prior to ligature or cautery. In 1867, Eugene Koeberle, who accidentally found arterial forceps with a catch closure came away spontaneously without the need for ligature, and invented “pince hémostatique,” which have pin and hole catches. In 1882, the Kocher clamp was created by Emil Theodor Kocher, who significantly contributed to thyroidectomies (removal of all or a part of the thyroid gland) and decompressive craniotomy. This invention decreases the risk of contamination while cutting dense tissue. Later, Dr. William Henry Welch and William Stewart Halsted contributed to the invention of clamps and Halsted-Mosquito Hemostats, which were used to clamp small blood vessels.