Retractor (medicine)

A retractor is a surgical instrument used to separate the edges of a surgical incision or wound, or to hold back underlying organs and tissues, so that body parts under the incision may be accessed. Retractors are essential tools in surgery, providing surgeons with a clear view and access to the surgical site.

A typical surgical retractor

Types of Retractors

Retractors can be classified into two main categories: hand-held and self-retaining.

Hand-held Retractors

Hand-held retractors require manual operation by a surgical assistant. They come in various shapes and sizes, each designed for specific types of surgery. Common hand-held retractors include:

• Deaver retractor: A large, flat retractor used to hold back the abdominal wall.
• Army-Navy retractor: A double-ended retractor with different lengths on each end, used in shallow incisions.
• Senn retractor: A small, double-ended retractor with one end being a small, sharp rake.

Self-retaining Retractors

Self-retaining retractors have a locking mechanism that allows them to hold tissue apart without the need for a surgical assistant. Examples include:

• Weitlaner retractor: A self-retaining retractor with ratchet locks, often used in orthopedic surgery.
• Balfour retractor: Used in abdominal surgery, it has a central blade and two side blades.

A retractor used in thyroid surgery

Uses in Surgery

Retractors are used in various surgical procedures to improve visibility and access to the surgical site. They are crucial in:

• Abdominal surgery: To hold back the abdominal wall and organs.
• Orthopedic surgery: To expose bones and joints.
• Neurosurgery: To retract brain tissue and provide access to the cranial cavity.

Design and Material

Retractors are typically made from stainless steel, which is durable and can be sterilized. Some retractors have plastic or rubber components for comfort and grip. The design of a retractor is often specific to its intended use, with variations in blade shape, size, and handle design.

Various surgical retractors

Innovations and Developments

Recent advancements in retractor design include the use of lightweight materials and ergonomic handles to reduce fatigue during long surgeries. Some modern retractors are equipped with fiber optic lights to illuminate the surgical field.

Related Pages

• Surgical instrument
• Surgery
• Operating room

A Deaver retractor

Conclusion

Retractors are indispensable tools in the surgical field, providing the necessary exposure and access to perform complex procedures. Their design and functionality continue to evolve, enhancing surgical outcomes and patient safety.

Doyen's retractor