🟡The yellow area is the wound area,
🔴The red area is the hernia mesh placement area.
🔵The blue arrow indicates that the edge of the hernia mesh should extend at least 8 mm beyond the edge of the incision.
What is a hernia?
To put it in the simplest terms: a hernia occurs when an organ from inside the abdominal cavity—such as the intestines, omentum, liver, or bladder—protrudes through an “abnormal opening” or “weak spot” in the abdominal wall, pushing its normal position outward and forming a soft swelling or bulge beneath the skin. This “abnormal opening” can be:
Congenital: developmental defects or vulnerabilities present at birth (most common).
Acquired: resulting from trauma, surgery, or other factors that cause tearing or weakening of the abdominal wall muscles.
Types and Common Causes of Hernias
Types of Hernia | Common locations | Main Causes | High-incidence pets |
Umbilical hernia | navel | Congenital (common) | Puppies, kittens |
Inguinal hernia | Between the hind legs and the abdomen | Congenital/Acquired | Unspayed female dogs, obese dogs |
Perineal hernia | Around the anus | Acquired (muscle atrophy) | Unneutered senior male dog |
Diaphragmatic hernia | Diaphragm (within the body) | Acquired (severe trauma) | Any pets (especially cats and dogs that go outdoors) |
Incisional hernia | Old surgical scar | Acquired (postoperative issues) | Any pet that has undergone surgery |
Current Major Challenges in Clinical Hernia Repair in Veterinary Medicine
1. High postoperative recurrence rate: This is a major drawback of traditional suture-based repair techniques.
2. Risk of surgical complications: Traditional surgery may be associated with a range of complications, including but not limited to:
Wound infection or dehiscence: the incidence is relatively high.
Nerve injury: For example, during perineal hernia repair, improper suturing can injure the sciatic nerve, leading to sciatic nerve palsy—a complication that requires urgent management.
Bowel and bladder dysfunction: Postoperatively, patients may experience tenesmus (a frequent urge to defecate), difficulty urinating, urinary incontinence, or fecal incontinence. These complications are typically associated with the proximity of the surgical site to the anal and urethral sphincters.
Pain Management: Inadequate postoperative pain control can impair a pet’s recovery and quality of life.
3. Weakness and atrophy of the supporting tissues: In particular, in older unneutered male dogs, the pelvic floor muscles—such as the obturator internus—may already be atrophied or weakened. When these already atrophied tissues are used for repair, the strength and durability of the repair are compromised, increasing both the difficulty of the procedure and the risk of recurrence.
Hernia mesh
Structural Composition
a) A mesh implant designed to reinforce connective tissue structures. It is made of monofilament polypropylene and woven into a thin, elastic, shape-stable mesh. Polypropylene exhibits excellent biostability and does not degrade in vivo.
b) The polypropylene mesh is coated with collagen and PHMB (an antimicrobial agent), endowing it with regenerative and antimicrobial properties to reduce the risk of infection and inflammation.
Advantages of Using a Hernia Mesh
1. Significantly reduces the recurrence rate: The core advantage of mesh repair lies in its ability to provide robust and durable mechanical support, effectively reinforcing weakened abdominal wall or pelvic floor tissues and thereby minimizing recurrence caused by inadequate local tissue tension.
2. Reduction of surgical complications: The use of mesh, particularly when combined with advanced surgical techniques such as obturator internus muscle transposition, can: – Lower the risk of nerve injury by achieving more rational mechanical distribution and secure fixation, thereby reducing the need for suturing in sensitive areas and minimizing the likelihood of nerve damage; – Improve postoperative function, as robust support helps restore normal anatomical positioning and reduces adverse effects on bowel and bladder function.
3. In cases with weak or atrophic tissue: For patients whose native muscle tissue is weak, atrophic, or has previously failed repair, mesh provides a reliable “reinforcing material” that compensates for the deficiencies of the native tissue and broadens the surgical indications.
Product Performance
1. Manufactured using a braiding process, it exhibits high tensile strength, appropriate flexibility and rigidity, excellent tissue compatibility, and biocompatibility;
2. The mesh has large interstitial pores, making it unsuitable for bacterial harboring within the mesh fibers and providing strong resistance to infection;
3. Collagen effectively stimulates fibrous tissue proliferation, facilitating tissue ingrowth and promoting healing.
4. PHMB reduces the risk of infection and inflammation during patch implantation.
The full chemical name of PHMB is polyhexamethylene biguanide hydrochloride, with the chemical formula (C₈H₁₇N₅)n·xHCl. It is a broad-spectrum cationic polymer antimicrobial agent widely used in disinfection, healthcare, and industrial applications.
Scope of Application
Surgical procedures such as gastrointestinal soft-tissue repair, thoracic repair, and hernia repair.
Instructions for Use
1. This product is sterilized by electron-beam irradiation, supplied in a sterile condition, and intended for single use only.
2. Only pet veterinarians and veterinary surgeons who are qualified in the relevant surgical techniques for hernias and defects of the abdominal wall may use this mesh in patients.
3. It is recommended to use non-absorbable sutures to secure the mesh in the appropriate position, maintaining a minimum distance of 8 mm from the margins.
Keywords
Faun®️ Hernia Patch
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