Near-infrared laser welding of aortic and skin tissues and microscopic investigation of welding efficacy

Tapan K. Gayen M.D.; Alvin Katz; Howard E. Savage; John Lee; M. Paul; Rabindra K. Halder; Steven A. McCormick; Robert R. Alfano

doi:10.1117/12.476392

12 September 2003 Near-infrared laser welding of aortic and skin tissues and microscopic investigation of welding efficacy

Tapan K. Gayen M.D., Alvin Katz, Howard E. Savage, John Lee, M. Paul, Rabindra K. Halder, Steven A. McCormick, Robert R. Alfano

Author Affiliations +

Proceedings Volume 4949, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIII; (2003) https://doi.org/10.1117/12.476392
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

Ex vivo specimens of human and porcine aorta and skin were welded using either Cr⁴⁺:YAG or Erbium fiber lasers tuned to the water absorption band at 1440-1460 nm. Welding was performed without the use of protein solders or glues. Welding efficacy was monitored by measuring the tensile strength of the welded tissue and the extent of collateral tissue damage. Full thickness tissue bonding with no collateral damage was observed with porcine aorta samples. The optimum tensile strength for porcine and human aorta was 1.33 ± 0.15 kg/cm² and 1.13 ± 0.27 kg/cm² respectively for welding at 1460 nm, while that for porcine and human skin was 0.94 ± 0.15 kg/cm² and 1.05 ± 0.19 kg/cm² respectively achieved with welding at 1455 nm. The weld strength as a function of laser wavelength demonstrated a correlation with the absorption spectrum of native water suggests that absorption of light by water in the tissue plays a significant role in laser tissue welding.

Citation Download Citation

Tapan K. Gayen M.D., Alvin Katz, Howard E. Savage, John Lee, M. Paul, Rabindra K. Halder, Steven A. McCormick, and Robert R. Alfano "Near-infrared laser welding of aortic and skin tissues and microscopic investigation of welding efficacy", Proc. SPIE 4949, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIII, (12 September 2003); https://doi.org/10.1117/12.476392

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available