Allis tissue forceps, also known as Allis clamps, are surgical instruments used to grasp and manipulate tissues during surgery. They are named after Oscar Huntington Allis, an American surgeon who designed them in the late 19th century.
 
Allis tissue forceps have a number of features that make them well-suited for their intended use:
Finger-ring handles: These provide a comfortable grip and allow for good control of the instrument.
Ratchet locking mechanism: This allows the forceps to be locked in a closed position, which is helpful for holding tissues securely.
Longitudinal serrated tips: These teeth help to grip tissues firmly without causing damage.
Blunt tips: These prevent the forceps from piercing delicate tissues.
Allis tissue forceps are available in a variety of sizes and styles to meet the specific needs of different surgical procedures. They are commonly used in general surgery, gynecology, urology, and other specialties.