Mesh implants

Mesh implant is a material for surgical treatment of hernia ( hernioplasty ), which is a lightweight mesh stretched over a nitinol frame. A new generation of hernia repair nets was invented by the American company MMDI in 2001 under the brand name Rebound HRD (Hernia Repair Device). The devices are designed to treat both inguinal and ventral hernias.

Content

Nitinol frame

An innovative innovation is the use of an alloy of titanium nickel ( nitinol ) to support a synthetic mesh. A synthetic mesh has been used to reposition soft tissue for many years, but has never been previously supported by nitinol. Nitinol is a biologically inert ( biocompatible ) alloy with a shape memory effect and superelasticity that can be deformed beyond recognition and then returned to its original shape.

The nitinol structure also influences the peripheral edge of the mesh, adapting it to adjacent tissue. This feature leads to a "Velcro" - an effect that stabilizes the device in place and helps to secure the device.

Features of use

An operation using a mesh implant can be performed both laparoscopically and by an open method.

Self-expanding. The mesh itself is easily straightened in the abdominal cavity. Due to the nitinol frame, it tightly abuts its edges in the tissue, congruently repeating the anatomy of the installation zone.
No need for fixation. Additional fixation by tackers is not required, which minimizes pain after surgery and the likelihood of nerve infringement.
X-ray contrast. In the postoperative period, using the X-ray examination, you can control the location of the mesh.

Inguinal hernia

Mesh implants for inguinal hernias are made of modern condensed cellular polypropylene with a thickness of 0.017 mm and a porosity of 2000 μm. The cellular structure of the material has optimal lightness and biocompatibility properties. The mesh itself is easily straightened in the abdominal cavity, then with the help of clamps it is installed in the peritoneal space without additional fixation by tackers.

Ventral hernias

In mesh implants for ventral hernias, condensed polytetrafluoroethylene (cPTFE) implant material is used, combining properties that promote tissue "ingrowth" and healing abilities of large-pore surgical polypropylene monofilaments with biocompatibility of expanding polytetrafluoroethylene. The use of polytetrafluoroethylene (cPTFE) as an implant material minimizes tissue adhesion and promotes rapid tissue repair and effective tissue integration (within 6 days after implantation). Fixation of these implants to the muscles of the anterior abdominal wall consists in the application of 3-4 transfascial sutures.

Relapse Probability

The use of mesh implants eliminates certain causes of relapse:

using mesh not large enough
twisting mesh when suturing
wrinkling of nets in the postoperative period when they grow through tissues