Simultaneous infrared laser sealing and cutting of blood vessels

Woheeb M. Saeed; Jude K. Yoshino; Alexandria J. Traynham; Nathaniel M. Fried

doi:10.1117/12.3000376

12 March 2024 Simultaneous infrared laser sealing and cutting of blood vessels

Woheeb M. Saeed, Jude K. Yoshino, Alexandria J. Traynham, Nathaniel M. Fried

Proceedings Volume 12817, Advanced Photonics in Urology 2024; 1281709 (2024) https://doi.org/10.1117/12.3000376
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Previous benchtop studies demonstrated infrared (IR) laser sealing and cutting of blood vessels, in a sequential, two-step approach. This study describes a smaller, laparoscopic device design, and simultaneous approach to sealing and bisection of vessels. A 1470-nm IR laser sealed and bisected 40 porcine renal arteries, ex vivo. A reciprocating, side-firing, optical fiber, housed in a transparent square quartz optical chamber (2.7 x 2.7 x 25mm OD), delivered laser energy over an 11mm scan length, with a wide range of powers (41 to 59W) and treatment times (5 to 21s). Vessel diameters ranged from 2.5 to 4.8mm. All vessel cut ends were successfully sealed (80/80), as indicated by burst pressures greater than 360mmHg. The highest power, 59W, resulted in short times of 5 to 6s. Peak temperatures on the external chamber surface reached 103 °C. Time to cool down to body temperature was 37s. Infrared lasers simultaneously sealed and bisected blood vessels, with treatment times comparable to, and temperatures and cooling times lower than conventional devices.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Woheeb M. Saeed, Jude K. Yoshino, Alexandria J. Traynham, and Nathaniel M. Fried "Simultaneous infrared laser sealing and cutting of blood vessels", Proc. SPIE 12817, Advanced Photonics in Urology 2024, 1281709 (12 March 2024); https://doi.org/10.1117/12.3000376

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