Which instrument is primarily used for retracting tissues?

The TECA retractor is specifically designed for the purpose of retracting tissues during surgical procedures. Its structure typically includes a handle and one or more blades that can be adjusted to hold tissues away from the surgical site, thereby providing a clear view and access for the veterinarian. This instrument is particularly useful in surgeries where visibility and access to deeper tissues are crucial.

In contrast, other instruments listed serve different functions. The trephine is used primarily for cutting circular openings in tissue, often to remove bone or perform biopsies. The Volkman scoop is utilized to scoop out tissue, such as during debridement, rather than for retraction. Lastly, the laminectomy rongeur is aimed at removing bone and soft tissue during spinal surgeries, not for holding tissue back as retractors do. Understanding these specific functions and applications highlights why the TECA retractor is the correct choice for tissue retraction.