What is the function of a ratchet in surgical instruments?

• A. To adjust the length of the instrument
• B. To lock the handles in place
• C. To measure pressure
• D. To provide sterile access

Answer: (B)

The function of a ratchet in surgical instruments is to lock the handles in place, which is crucial for controlling and maintaining the position of the instrument during a surgical procedure. When the handles of an instrument are squeezed together, the ratchet mechanism engages and holds them without requiring constant pressure from the surgeon. This allows for stability and precision when manipulating tissues or performing surgical tasks.

By securely locking the handles, the ratchet enables the surgeon to focus on the procedure without needing to maintain force on the handles. This feature is particularly important in delicate surgeries where both hands are often needed to perform intricate maneuvers. The ratchet enhances safety and efficiency, reducing the risk of accidental release or movement of the instrument during critical moments in surgery.