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Proceedings Paper

CO2 laser soldering of arteriotomy incisions in blood vessels of rats using a temperature-controlled fiber optic system
Author(s): David Leshem; Tamar Vasilyev; Avi Ravid; Andrea Gat; Naam Kariv; Abraham Katzir; Eyal Gur
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Paper Abstract

Background and objectives: Conventional methods for microvascular anastomosis are normally based on suturing, using special thin nylon sutures. These methods suffer from major drawbacks, which include: anastomosis, which is not watertight, and sutures or clips that cause an inflammatory response. In order to obtain better results, we introduced a procedure based on CO2 laser soldering. We tested the system on arteriotomy incisions in rat blood vessels, in vivo. Materials and methods: We used a fiber optic based laser soldering system, with a temperature control capability. Arteriotomy incisions of lengths 4±1mm were performed on the femoral arteries of 48 wistar rats: 24 rats in the control group (suture) and 24 rats in the test group (laser soldering). We conducted two follow-up periods: 7 days and 21 days after the surgical procedure, for each group. Flow tests and histology examination were done in order to evaluate the quality of the procedures. Results: The patency rate was 84% for both groups, soldered and sutured. The sutured group showed a significant foreign body reaction (p < 0.05), which was not observed in the soldered group. We found no evidence of thermal damage in the soldered blood vessels. Conclusions: We can conclude that laser soldering is a less traumatic procedure, compared with the conventional suturing technique. It is potentially a faster technique and easier to master.

Paper Details

Date Published: 27 June 2003
PDF: 8 pages
Proc. SPIE 4949, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIII, (27 June 2003); doi: 10.1117/12.485301
Show Author Affiliations
David Leshem, The Tel-Aviv Sourasky Medical Ctr. (Israel)
Tamar Vasilyev, Tel-Aviv Univ. (Israel)
Avi Ravid, Tel-Aviv Univ. (Israel)
Andrea Gat, The Tel-Aviv Sourasky Medical Ctr. (Israel)
Naam Kariv, Tel-Aviv Univ. (Israel)
Abraham Katzir, Tel-Aviv Univ. (Israel)
Eyal Gur, The Tel-Aviv Sourasky Medical Ctr. (Israel)

Published in SPIE Proceedings Vol. 4949:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIII
Eugene A. Trowers; Lawrence S. Bass; Udayan K. Shah; Reza S. Malek; David S. Robinson; Kenton W. Gregory; Lawrence S. Bass; Abraham Katzir; Nikiforos Kollias; Hans-Dieter Reidenbach; Brian Jet-Fei Wong; Timothy A. Woodward; Werner T.W. de Riese; Keith D. Paulsen, Editor(s)

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