Laser biotissue bonding by 980 nm laser radiation
Vladislav M. Ermolaev,1 Yulia V. Fedorova,1 Andrey V. Belikov,1,2 1 ITMO University, Saint Petersburg, Russia 2 The First Pavlov State Medical University of St. Petersburg, Saint Petersburg, Russia
Abstract
The use of laser technologies for biotissue bonding is a very promising area of modern medicine. An example of laser biotissue bonding in surgery is laser soft biotissue bonding after incision. At present study the experiments in vitro on the bonding of pieces of chicken breast imitating human mucosa by continuous 980 nm laser radiation were carried out. The bonding was performed both with solder, biocompatible bovine serum albumin, and without it. Dependencies of depth, width and volume of coagulated biotissue on laser treatment parameters were obtained. Moreover, tension tests with specimens were made. Application of solder allowed to decrease the biotissue thermal damage volume and to reach higher bonding strength. It was found that bonding of chicken breast and consequently human mucosa should be carried out with solder, parameters for achieving maximum bonding strength were derived. An example of laser biotissue bonding in cosmetology is laser hair extension. For preliminary evaluation of optimal parameters of laser bonding procedure, computer optical and thermophysical modelling was performed. As a result of modelling, dependencies of temperature and biotissue thermal damage volume on laser treatment parameters were obtained. Experiments on the bonding of human hair for extension with continuous 980 nm laser radiation were carried out. Results of modelling and experiments showed a satisfactory match. The possibility of 980 nm laser hair extension was demonstrated and optimal working parameters were determined.
Speaker
Vladislav M. Ermolaev
ITMO University
Russia
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