Orvieto Marcelo A, Lucioni Alvaro, Zorn Kevin C, Mikhail Albert A, Brendler Charles B, Shalhav Arieh L
Section of Urology, University of Chicago, Chicago, Illinois, USA.
J Endourol. 2007 Mar;21(3):310-4. doi: 10.1089/end.2006.0193.
The LapraTy clip (LTc) is a useful tool for supplementing knot-tying during reconstructive laparoscopic surgery. However, data regarding its safety and efficacy are scarce. We critically assessed the in-vitro performance of the LTc over different sizes of two suture materials commonly used during reconstructive procedures.
The gliding resistance (GR) of one or two LTcs was tested on various sizes of both Polysorb and Prolene sutures. The GR of each suture was then compared with its breaking strength. Forces were measured using a Vernier Force Sensor.
The GR of one LTc was significantly lower than the breaking strength of all Polysorb and Prolene suture sizes with the exception of 7-0 Prolene, with which the suture broke before the LTc slipped off. When two LTcs were placed sequentially, the GR increased significantly compared with a single LTc and was equal to or greater than the breaking strength for Polysorb 3-0 to 5-0 and Prolene 3-0 to 6-0. The percentage of GR over breaking strength was inversely related to suture size and was significantly greater with Prolene than with the Polysorb suture of the same size.
Our results provide a better understanding of the resistive force an LTc offers before slipping and therefore failing. The results observed with Prolene sutures are encouraging and must be further investigated in an animal study to confirm the safety of the LTc when used during reconstructive procedures.
LapraTy夹（LTc）是重建性腹腔镜手术中辅助打结的有用工具。然而，关于其安全性和有效性的数据却很少。我们严格评估了LTc在重建手术中常用的两种不同尺寸缝合材料上的体外性能。
在不同尺寸的聚乙醇酸缝线和聚丙烯缝线测试一或两个LTc的滑动阻力（GR）。然后将每种缝线的GR与其断裂强度进行比较。使用游标力传感器测量力。
除7-0聚丙烯缝线外，一个LTc的GR显著低于所有尺寸的聚乙醇酸缝线和聚丙烯缝线的断裂强度，对于7-0聚丙烯缝线，在LTc滑脱之前缝线就已断裂。当依次放置两个LTc时，与单个LTc相比，GR显著增加，并且等于或大于3-0至5-0聚乙醇酸缝线以及3-0至6-0聚丙烯缝线的断裂强度。GR相对于断裂强度的百分比与缝线尺寸呈负相关，并且相同尺寸下聚丙烯缝线的该百分比显著高于聚乙醇酸缝线。
我们的结果能让我们更好地理解LTc在滑脱并因此失效前提供的阻力。在聚丙烯缝线上观察到的结果令人鼓舞，必须在动物研究中进一步研究，以确认LTc在重建手术中使用时的安全性。
