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  • Poster presentation
  • Open Access

In vitro testing of titanium knot fastener used in cardiac and general surgery with pull apart force

Journal of Cardiothoracic Surgery20138 (Suppl 1) :P64

  • Published:


  • Public Health
  • Titanium
  • Tensile Strength
  • High Tensile Strength
  • Minimal Average


To test 2-0 B. Braun PremiCron Suture Knot Pull Apart Force of Two Suture Lots fastened with Titanuim fastener Cor Knot® and compare them with USP Class I Min. Avg. 2-0 Suture Knot-Pull Tensile Strength (Doubled for Loop Test) – (USP).


Two Suture Lots of 2-0 B. Braun PremiCron Suture: Lot # 1-9364 (24 sutures) and Lot # 110095 (24 sutures) were used and fastened with titanium fastener Cor Knot®. The pull apart force was measured for both of the suture lots.


The USP Class I Min. Avg. 2-0 Suture Knot-Pull Tensile Strength (Doubled for Loop Test) is defined as 2.88 kgf. The Tensile Strength of Lot # 1-9364 was 4,7761 ± 0,2005 kgf (mean ± std dev) - min 4.2282, max 5.2289, and for Lot # 1-9364 was 5,5151 ± 0,2625 kgf (mean ± std dev) - min 4,0044, max 5,1356, respectively. There were no statistically signiffcant differences between the both lots (F- test, p = 0,102). Comparing tensile strenght for both lots fastened with Cor Knot® with USP tensile strength, knots fatened with Cor Knot® showed higher tensile strengths for all the 48 knots. The minimall tensile strength was in the lot 2-0 PremiCron P/N M0027845, Lot # 110095, and was 4,0044 kgf, which is 1 kgf above the recommended USP strength.


Titanium fastened 2-0 B. Braun PremiCron Sutures of two tested lots showed much higher Knot Pull Apart Force compared with recommended minimal average USP Class I Min. Avg. 2-0 Suture Knot-Pull Tensile Strength (Doubled for Loop Test). The use of Cor Knot® is safe, fast and stong and may be recommended as a routine knot fastener for general and cardiovascular surgery, especially in combination with endoscopic surgery.

Authors’ Affiliations

LSI SOLUTIONS, 7796 Victor-Mendon Rd., Victor, NY 14564, USA


© Gersak and Sauer; licensee BioMed Central Ltd. 2013

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.