What is the primary purpose of using a ratchet mechanism in surgical instruments?

• A. To increase sharpness
• B. To provide a locking feature for instrument handles
• C. To enhance visibility
• D. To facilitate the application of heat

Answer: (B)

The primary purpose of using a ratchet mechanism in surgical instruments is to provide a locking feature for instrument handles. This mechanism allows the instrument to be securely locked in a closed position, which is crucial during surgery. When a surgeon or surgical assistant grips the handles, the ratchet engages, preventing the handles from slipping apart under tension. This ensures a stable and controlled grip on tissues or materials during surgical procedures, allowing for precision and safety.

By locking the handles, the instrument can remain in a closed position without requiring continuous pressure from the user, reducing fatigue and enhancing overall efficiency during lengthy operations. The ratchet mechanism also enables the user to easily release or adjust the instrument as necessary, maintaining flexibility while ensuring functionality.

Other options may address features of surgical instruments, but they do not represent the primary function of the ratchet mechanism specifically, which is centered on the aspect of locking and stability during surgical tasks.