Surgical Mesh and Its Application in Hernia Repair

The technology is rapidly advancing worldwide, and the field of medicine is no exception. Quick relief, faster recovery, and shorter hospital stays are among the benefits brought by modern medical advancements. One of the most common health conditions, especially with increasing age, is a hernia. In this article, we introduce the most important treatment method for hernia, the use of surgical meshes. We will also explain different types of surgical meshes, such as dual-layer and three-dimensional meshes, and discuss their differences.

What Is a Hernia and How Does It Occur?

A hernia occurs when weakness in the muscles or connective tissues allows fat, muscle, or abdominal organs, such as the intestine, to protrude through the fascia (connective tissue wall).

Hernias can occur in both men and women at any age. Some of the main factors that contribute to the development or worsening of a hernia include muscle weakness, heavy lifting, increased intra-abdominal pressure, chronic constipation, severe coughing, congenital factors, and more.

Methods for Hernia Repair

Once a hernia is diagnosed, patients are closely monitored to prevent progression, or they may undergo surgical repair. Hernia surgeries are usually performed by general surgeons and, in some cases, urologists.

One of the most common procedures in hernia repair is implanting a surgical mesh. In this surgery, an artificial mesh is used to reinforce the hernia site and prevent recurrence.

What Is Surgical Mesh?

Since a hernia occurs due to weakness in the abdominal wall, repairing it solely with sutures may not sufficiently restore strength. Therefore, surgical mesh is used to reinforce the abdominal wall and fascia and reduce the risk of recurrence.

A surgical mesh is a medical implant placed over the hernia defect and secured with sutures. Over time, the patient’s tissue grows into the small pores of the mesh, strengthening the muscular wall and stabilizing the repair.

Types of Surgical Mesh

The main types of surgical mesh include:

Absorbable Mesh

Absorbable meshes gradually degrade over time and lose their strength. Therefore, they are not suitable when long-term reinforcement is required. These meshes are typically made from polymers such as polyglycolic acid or polycaprolactone.

Non-Absorbable Mesh

Non-absorbable meshes remain permanently in the body and are designed for long-term strength. Most non-absorbable surgical meshes are made of polypropylene, commonly known as prolene mesh.

Asia Jarah Pishro proudly provides high-quality polypropylene meshes for medical centers.

Dual Mesh

In some hernia repairs, the surgical mesh comes into direct contact with internal organs, increasing the risk of adhesions and serious complications.

To prevent this, dual-layer meshes were developed. These meshes are polymer-based and coated with non-adhesive materials such as silicone or PTFE (polytetrafluoroethylene). In some cases, absorbable fatty acids, cellulose, or collagen are used. These coatings help reduce the risk of adhesion.

Asia Jarah Pishro Company produces dual meshes in the following sizes:

• 20*30 cm
• 15*15 cm
• 10*15 cm (oval)
• 10*15 cm
• 7.5*15 cm
• 6*11 cm

Three-Dimensional Mesh

While most meshes are woven in a two-dimensional structure, some repairs require three-dimensional meshes that offer greater volume and thickness.

3D meshes are particularly useful in regions where 2D meshes cannot cover the defect adequately, such as the groin. They reinforce the hernia site from above, below, and through the center. They are also used in certain cosmetic procedures for volume augmentation.

Differences Between Dual Mesh and Single-Layer Mesh

Single-layer meshes have the same structure on both sides, whereas dual meshes have two distinct surfaces:

• One side is porous, allowing fibroblast growth, tissue integration, and firm fixation to the fascia and muscular wall. This side faces the hernia defect.
• The other side is smooth and non-adhesive, preventing contact, sticking, or damage to internal organs.

Because of these properties, dual meshes are the preferred choice for surgeries where there is a high risk of adhesion.

Essential Features of Surgical Mesh

A high-quality surgical mesh should be:

• Chemically neutral
• Stable against body fluids and ions
• Non-inflammatory and non-allergenic
• Mechanically strong enough to maintain structure
• Flexible for easy placement
• Sterilizable
• Designed with an appropriate pore size

Surgical Mesh and Pore Size Variations

Pore size is a key factor in mesh design. Generally, larger pores result in a lighter mesh, which enhances patient comfort, while smaller pores lead to a heavier mesh and a higher risk of postoperative pain. Research indicates that lightweight meshes with sufficient strength are associated with reduced discomfort and pain.

Another important consideration is cellular penetration. Pores smaller than 75 micrometers can promote bacterial growth and elevate infection risk. Conversely, macroporous meshes with pore sizes greater than 100 micrometers allow better macrophage activity, blood vessel formation, and tissue integration. Further increasing the pore size from 100 to 300 micrometers has been shown to improve vascular growth and healing outcomes.

However, pore size cannot be increased indefinitely because overly large pores may compromise the structural integrity and mechanical strength of the mesh. Therefore, for optimal performance, the mesh must achieve an appropriate balance between strength, pore size, and flexibility to ensure reliable tissue reinforcement.

Conclusion

Surgical meshes play a vital role in modern hernia repair by providing reliable reinforcement, reducing recurrence, and improving patient outcomes. With advancements in material science and design, today’s meshes offer greater safety, flexibility, and long-term performance in hernia treatment. Looking for high-quality prolene mesh? Consult the experts at Asia Jarah Pishro today.