| "Effect of robotic manipulation on unidirectional barbed suture integrity: evaluation of tensile strength and sliding force." | |
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MedLine Citation:
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PMID: 22141354 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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ABSTRACT: Introduction: One of the more challenging portions of robotic assisted radical prostatectomy (RARP) is the urethrovesical anastomosis. Because of this, a unidirectional absorbable barbed suture (V-LocTM 180, Covidien, Mansfield, MA) has been used to complete the anastomosis with better efficiency and less tension. The effect of robotic needle driver manipulation on barbed suture is unknown. Therefore, the aim of this study is to determine whether robotic manipulation decreases the tensile strength and peak-sliding force of V-Loc TM barbed suture. Materials and Methods: Fifty-six V-LocTM sutures were compared to 56 MaxonTM sutures. Half of the sutures in each group were manipulated with a DaVinci (Intuitive Surgical, Sunnyvale, CA) robot large needle driver five times over a 5cm length of suture. The other half was not manipulated. Breaking force was determined by placing sutures in a Bose® Electroforce load testing device. For sliding force testing, 28 V-LocTM sutures were manipulated in the same fashion and compared to 28 non-manipulated V-LocTM sutures. Peak force required to make the suture slip backwards in porcine small intestine was determined to be the sliding force. Scanning electron microscopy of the barbs before and after robotic manipulation was also performed. Results: The mean difference in breaking forces for manipulated vs. non-manipulated MaxonTM sutures was 4.52 N (p=0.004). The mean difference in breaking forces for manipulated vs. non-manipulated V-LocTM sutures was 1.30 N (p=0.046). The manipulated V-LocTM group demonstrated a lower peak sliding force compared to the non-manipulated group (0.76 vs. 0.88 N, p=0.199). Electron microscopy revealed structural damage to the barbs. Conclusions: Tensile strength and peak sliding force of V-LocTM suture is decreased by robotic manipulation. This is likely due to structural damage to the suture and barbs. However, this structural damage is likely not clinically significant. |
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Authors:
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Chad A Lagrange; Dharam Kaushik; Kevin Clay; Eugene Park; Carl A Nelson; S G M Hossain |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-6 |
Journal Detail:
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Title: Journal of endourology / Endourological Society Volume: - ISSN: 1557-900X ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8807503 Medline TA: J Endourol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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university of nebraska medical center, Surgery/Urology, 982360 Nebraska Medical Center, Omaha, Nebraska, United States, 68198; clagrange@unmc.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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