Röder knot
| Röder knot | |
|---|---|
|
|
| Type | loop |
| application | Suture for minimally invasive surgery |
| Ashley No. | - |
| English | Roeder knot |
| List of nodes | |
The Röder knot is a surgical knot used to tie ligatures in minimally invasive surgery .
history
The knot originally comes from veterinary medicine . Professor Oskar Röder from the University of Veterinary Medicine Dresden invented the knot and described it in 1913 in his work Surgical Technique for Vets and Students . However, the knot was then forgotten. Only with the introduction of endoscopic surgery was the lump rediscovered. Sliding knots are indispensable there today and the Röder knot is one of the basic techniques. However, the knot also offers advantages in non-endoscopic interventions.
Suture material manufacturers also offer ready-made knots with already threaded knot sliders, often called "Röder loops". These go back to an invention of the pioneer of laparoscopy Kurt Semm . When Semm performed a sterilization around 1975, there was a bleeding. To breastfeed her, Semm wanted to set a Röder knot that had been used in other operations for years. At that time, however, there were no instruments to push the snare into the abdomen . So he improvised and threaded the knot into a trocar . Semm described the method in numerous publications and it has been routine since 1977.
Knot
After the surgeon has set the suture , he places the knot extracorporeally (outside the body). To do this, he ties the thread in half a loop . He makes two round trips around the created eye . With a half turn around the part of the loop facing the body , he closes the knot.
The surgeon then advances the knot in stages for the ligature. There he pulls it tight by pulling on the loose end while simultaneously applying counterpressure to the knot itself. The thread swelling in situ supports the tight fit.
Alternatives
Further extracorporeal sliding knots in minimally invasive surgery are the Melzer-Buess, Weston and Von Leffern knots .
The surgeon's knot is often used in open operations .
Web links
Individual evidence
- ↑ Dieter Müller: Röder sliding knot in small animal surgery . In: Small Animal Medicine . No. 3 , 2000, pp. 115–122 ( PDF [accessed February 3, 2020]).
- ^ Grzegorz S. Litynski: Kurt Semm and the Fight against Skepticism: Endoscopic Hemostasis, Laparoscopic Appendectomy, and Semm's Impact on the "Laparoscopic Revolution" . In: Journal of the Society of Laparoendoscopic Surgeons . No. 2 , 1998, p. 309-313 , PMC 3015306 (free full text).