Heat management prevents tissue buckling and collateral damage in NIR-laser welding

Vidyasagar Sriramoju; Howard E. Savage; Rabindra Halder; Richard B. Rosen M.D.; A. Katz; R. R. Alfano

doi:10.1117/12.649830

22 February 2006 Heat management prevents tissue buckling and collateral damage in NIR-laser welding

Vidyasagar Sriramoju, Howard E. Savage, Rabindra Halder, Richard B. Rosen M.D., A. Katz, R. R. Alfano

Proceedings Volume 6078, Photonic Therapeutics and Diagnostics II; 60780Y (2006) https://doi.org/10.1117/12.649830
Event: SPIE BiOS, 2006, San Jose, California, United States

Abstract

In this study, a NIR erbium fiber laser tuned to a water vibrational overtone absorption band at 1455 nm was used to weld directly, in vitro, seventy-six porcine aorta tissues without the need for extrinsic solder materials. The tissues were divided into eleven groups based on the multiple and variable parameters that were used to weld the tissues. The effectiveness of the parameters used in each of the weld groups was evaluated directly at the time of the weld and also by tensile strength measurements done at the termination of the weld. Management of heat produced in tissues is of critical importance for good laser tissue welding (LTW). To address heat management issues, we report LTW using a transparent cover over the tissue specimen as a heat sink. Multiple scanning helps distribute the laser-generated heat and allows the tissue to cool between scans, reducing thermal damage. Better heat management using a transparent cover slide enhances the welding success. It reduces collateral damage and limits water evaporation and control the buckling of tissue around the line of apposition so that the two pieces that are welded do not move apart along the line of apposition due to buckling pressure and ensure a full-length weld.

Citation Download Citation

Vidyasagar Sriramoju, Howard E. Savage, Rabindra Halder, Richard B. Rosen M.D., A. Katz, and R. R. Alfano "Heat management prevents tissue buckling and collateral damage in NIR-laser welding", Proc. SPIE 6078, Photonic Therapeutics and Diagnostics II, 60780Y (22 February 2006); https://doi.org/10.1117/12.649830

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
4 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Laser tissue interaction

Tissues

Laser welding

Near infrared

Collagen

Diamond

Fiber lasers

Show All Keywords

Keywords/Phrases

Search In:

Publication Years