![]() ![]() Prior to cutting a vessel, a Constrictor Knot can be slipped over each of two forceps, which can then both be clamped onto the vessel, and the vessel cut between them.ĭisadvantages: The Constrictor Knot requires two passes around the vessel or pedicle and the knot itself requires learning. ![]() Other techniques exist, including Using the End and Folding. Once perfected, it is by far the quickest method. More commonly the two sides of the first loop benefit from a little push. In some materials, the knot actually forms just by twisting the ends. Technique: In this animation, the Constrictor Knot is formed using the Twisting Method. Our paper has generated interest and, as a result, the Royal College of Surgeons has kindly made it Available On Line. For our research we used a modification of his test bench to confirm that the Constrictor Knot is the most secure ligature by a large margin because of its ability to stay tight 1. Research on the Constrictor Knot: Howard Taylor, a veterinary surgeon in Salisbury, England pioneered the use of the Constrictor Knot to ligate the uterine pedicle in a canine hysterectomy and prefers his Instrument Technique. Sliding the Constrictor Down the Forceps (shown here).Options: Four ways of tying it in surgery are compared: This Sliding Technique is one way to facilitate tying it. Uses: The Constrictor Knot ( ABOK # 1188, p 216.) is uniquely suitable for use as a surgical ligature: it has superior binding properties, tightening smoothly and holding tight. ![]()
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