The semi-solid coating
is carefully formulated to provide controlled incorporation and penetration
of cellular remodeling as a soft tissue repair material. Animal studies
have shown resorption of the coating occurring upon implantation
and continuing over a 3 to 6 month period. The animal studies indicate
that bio-resorption occurs with decreased inflammation as evidenced
by decreased presence of mononuclear cells (morphologically characterized
by macrophages and foreign body giant cells) and was consistently
less intense when compared with other commercially available non-coated
polypropylene mesh.
Excellent tissue incorporation was evident at all comparable time
points to uncoated controls of Atrium ProLite™ and ProLite
Ultra™ Mesh. In three different animal models (rabbit, pig
and rat, hernia patch model, a subcutaneous implant model, an adipose
implant model, a peritoneal wall implant model), CQUR mesh has shown
fibrotic tissue incorporation, specifically on the abdominal wall
side of the implant. The same degree of incorporation and penetration
in and around the polypropylene monofilaments was demonstrated by
detailed histological evaluation and testing. This evidence of encapsulation
and reinforcement, i.e. not retardation or lack of fibrotic attachment
was advantageous in the animal model because it promoted wound defect
buttressing and healing to the same degree as other commercially
available products. At the same time there was consistent evidence
of excellent tissue incorporation when placed as a patch, spanning
an abdominal wall defect. Evidence of extensive mesothelial cell
coverage was observed with concomitant reduction in peritoneal adhesions.
The promotion of a mesothelial lining is intended to act as a neo-peritoneum
to minimize attachment of tissues and organs. This was
adequately demonstrated in all animal tests compared to non-coated
controls.
The thin semi-solid layer of Omega 3 oil did not impede normal
healing or incorporation in and around the individual polypropylene
fibers. At the same time, it demonstrated a membrane or layering
effect, reducing inflammation and
promoting a slip layer that formed on the peritoneal cavity side
minimizing attachment of the organs and underlying viscera in the
peritoneum.
There was no evidence demonstrating adverse events in these animal
studies. It is expected that the C-QUR mesh will not impact adverse
events which can occur in the human condition, such as malignancies,
obstructions, abscess, fistulas, or other abdominopelvic conditions.
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