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Experimental assay of a Dual Mesh® polytetrafluoroethylene prosthesis (non-porous on one side) in the repair of abdominal wall defects

Paper ID Volume ID Publish Year Pages File Format Full-Text
14008 1058 1996 6 PDF Available
Title
Experimental assay of a Dual Mesh® polytetrafluoroethylene prosthesis (non-porous on one side) in the repair of abdominal wall defects
Abstract

The porosity of the prosthetic biomaterials used to repair defects in the abdominal wall seems to influence the tissue repair process insofar as tissue integration of the prosthetic material and the formation of adhesions with abdominal viscera are concerned. We studied the behaviour of a new type of polytetrafluoroethylene prosthesis used for the repair of abdominal wall defects, Dual Mesh® (DM), which has two different faces; one face has a porosity between 30 and 60 μm, while the other is nonporous. In 20 New Zealand White rabbits, a full-thickness (except skin) 7cm × 5cm defect was created in the anterior abdominal wall that was repaired with DM. At 14, 30, 60 and 90 days, samples were obtained and studied by light and scanning electron microscopy. An immunohistochemical study was made with antibody anti-rabbit macrophages (RAM-11). Tensile strength was measured with an Instron tensiometer using 2-cm-wide strips obtained parallel to the shorter axis of the implant. DM induced little tissue adhesion to the material on the visceral peritoneum interface and was surrounded by organized repair tissue. The biomaterial was integrated in the repair tissue on the subcutaneous interface, but not on the peritoneal interface. The macrophage response decreased between days 14 and 90 (P < 0.001). Tensile strength increased significantly (P < 0.05) at every study period. We conclude that the DM prosthesis has little tendency to formation of visceral adhesions, the DM prosthesis was well tolerated by the receptor organism and the tensile strength of the prosthesis/ receptor tissue interface increased with time.

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Experimental assay of a Dual Mesh® polytetrafluoroethylene prosthesis (non-porous on one side) in the repair of abdominal wall defects
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 17, Issue 24, 1996, Pages 2367-2372
Authors
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us