Does the design of mini slings anchoring systems really matter? A biomechanical comparison between Mini Arc™ and Ophira™

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• 作者：R.S. Souza^a ; P.C.R. Palma^a ; F.G.F. Dias^a ; R.T. Siniscalchi^b ; C.L.Z. Riccetto^a ; ^{cassioriccetto@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; ^{Cassioriccetto@outlook.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：SUI ; stress urinary incontinence ; TVT ; tension-free vaginal tape ; TOT ; transobturator tape ; SIMS ; single incision mini sling ; ML ; maximum load ; SD ; standard deviation
• 刊名：Actas Urológicas Espa?olas (English Edition)
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：40
• 期：9
• 页码：564-569
• 全文大小：1090 K

文摘

Currently, a sling implant is the standard treatment for stress urinary incontinence in women. To be effective, they require an adequate anchoring system. The aim of this study is compare biomechanical features of fixation systems of two mini slings models available on the market (Ophira™ and Mini Arc™) through a tensile test.

Materials and methods

Anchoring devices of each sling were surgically implanted in abdominal wall of 15 rats divided into three groups of five animals which were arranged according to the date of post implant euthanasia on 7, 14 and 30 days. Abdominal walls of rats were extracted on bloc containing the anchoring system and were submitted to a tensile strength test to measure the maximum load and elongation until device avulsion from the tissue. The results were compared using Student's test t and a 5% cut off was considered significant.

Results

The Ophira™ mini sling fixation system demanded a greater maximum load and developed a longer stretch for avulsion from the implanted site at all moments evaluated (p value less than 0.05).

Conclusion

There were significant differences in fixation patterns of the anchoring systems, which were exclusively related to their designs. The Ophira™ mini sling fixation device provided better fixation to the abdominal wall of rats compared to the Mini Arc™ device, even in the late post-implant period.