Scissor

Scissors are hand-operated cutting instruments consisting of a pair of metal blades connected in such a way that the sharpened edges slide against each other when the handles (bows) are closed. Scissors are used for cutting various thin materials, such as paper, cardboard, metal foil, cloth, rope, and wire. In the medical field, scissors are essential tools used in surgery, dissection, and other medical procedures.

History

The history of scissors dates back to ancient times. The earliest known scissors appeared in Mesopotamia around 3,000 to 4,000 years ago. These were of the "spring scissor" type, consisting of two bronze blades connected at the handles by a thin, flexible strip of curved bronze, which kept the blades apart until they were squeezed together.

The modern cross-blade design was invented by the Romans around AD 100. This design has been used in various forms ever since, with improvements in materials and manufacturing techniques over the centuries.

Types of Scissors

Scissors come in various types, each designed for specific tasks:

• Surgical Scissors: Used in medical procedures, these scissors are made of high-grade stainless steel and are designed to cut human tissue. They come in various forms, such as Mayo scissors, Metzenbaum scissors, and Iris scissors.

• Dissection Scissors: Used in biological and medical laboratories for cutting specimens during dissection.

• Craft Scissors: Used for cutting paper and other crafting materials. These often have plastic handles and are designed for comfort and ease of use.

• Pinking Shears: Used in sewing to cut fabric in a zigzag pattern to prevent fraying.

Anatomy of Scissors

Scissors consist of the following parts:

• Blades: The cutting edges of the scissors, which are sharpened to allow for precise cutting.
• Pivot: The point where the blades are joined, allowing them to pivot and cut.
• Handles (Bows): The part of the scissors that is held by the user. They are often ergonomically designed for comfort.
• Screw: The fastener that holds the blades together at the pivot point.

Use in Medicine

In the medical field, scissors are indispensable tools. They are used in various procedures, including:

• Surgical Procedures: For cutting tissues, sutures, and other materials during surgery.
• Dissection: For cutting and separating tissues in anatomical studies.
• Emergency Medicine: For cutting clothing or bandages in emergency situations.

Maintenance and Care

Proper maintenance of scissors is crucial to ensure their longevity and effectiveness. This includes regular cleaning, sharpening, and lubrication of the pivot point. In medical settings, sterilization is essential to prevent infection.

Also see

• Forceps
• Scalpel
• Surgical Instruments
• Dissection