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Proceedings Paper

Hemostatic properties of a new cw 2µm laser scalpel for laparoscopic surgery
Author(s): D. Theisen-Kunde; V. Ott; R. Brinkmann; R. Keller
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Paper Abstract

Background: Laparoscopic surgery especially relies on hemostatic dissection. In this study, a new laser scalpel suitable for laparoscopic surgery due to its rapid dissection and adequate hemostatic properties is presented. Methods: A Thulium YAG laser system (λ= 2.01 μm) was used at power levels of 15- 20 W transmitted via 365μm core diameter quartz fiber. Arteries and veins of 0.25-3.2 mm inner diameter were coagulated and transected with the laser scalpel in anesthetized pigs, followed by ex vivo measurement of resistance to pressures up to 375 mmHg. Results: Small vessels (<0.5 mm) were successfully occluded up to 100% (arteries) and 89% (veins), larger vessels (1- 2.3 mm) to 74% (arteries) and 65% (veins). At 375 mmHg, 30% of veins and 35% of arteries stayed closed during external pressure measurement. Conclusion: The laser scalpel proved satisfying hemostatic properties for small vessels, for medium-sized vessels alternative coagulating devices must serve as possible back-up.

Paper Details

Date Published: 26 August 2005
PDF: 5 pages
Proc. SPIE 5863, Therapeutic Laser Applications and Laser-Tissue Interactions II, 58630G (26 August 2005); doi: 10.1117/12.633082
Show Author Affiliations
D. Theisen-Kunde, Institute of Biomedical Optics, Univ. of Lubeck (Germany)
V. Ott, Univ. Hospital Schleswig Holstein (Germany)
R. Brinkmann, Institute of Biomedical Optics, Univ. of Lubeck (Germany)
R. Keller, Univ. Hospital Schleswig Holstein (Germany)

Published in SPIE Proceedings Vol. 5863:
Therapeutic Laser Applications and Laser-Tissue Interactions II
Hubert van den Bergh; Alfred Vogel, Editor(s)

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