Laser-surgery in the veterinary medicine
In the surgical area, the laser ray can be used for the cut of tissue like a scalpel. Through the high temperatures of up to 300 °C, the cells of the treated tissue pop open and evaporate. This process is called vaporization.
The vaporization can be very well controlled through the selection of the parameters for laser performance, focussing of the laser ray, distance between the tissue and reaction time and therefore point-exactly applied. The strength of the used fiber-optic decides furthermore how fine the executed cut becomes.
The influence of the laser causes a coagulation of the surrounding blood vessels so that the field remains freely from bleedings. After-bleeding in the cut area is avoided.
(Graph “Vaporization/Coagulation”)
With the diode laser up to 99 % of the bacterias and viruses in the operation area are destroyed, so that the laser ray in the sore area develops also a disinfectant effect. This leads to a faster cure of the tissue and to a reduction of recidivous effects. Surgical interventions in the cure phase are clearly less painful in the comparison to conventional surgical interventions.
One distinguishes two methods of work:
- CONTACT MODE
The end of the fiber-optic is held directly at the tissue, passing back and forth along the tissue that has to be separated..
=> The cells evaporate and the tissue is detached.
- NON-CONTACT MODE (Free-beam mode)
The laser ray is focuses, in a distance of approximately 3 cm (distance holder) at the treatment point (0,5 mm).
After the operation, melted down or carbonized tissues should be wiped off with a moist swab.
Graph:
a) Vaporization cone
b) Carbonized tissue
c) Thermal reversible tissue
d) Vital environment tissue
Endoscopy with the Diode laser
With the diode laser, the laser ray is guided from the diode inside the appliance over a thin fiber-optic to the end of the fiber and leaves there. Unlike the CO2-Laser, with which the laser ray is guided over mirrors, which are accommodated in a hinged arm, the diode laser therefore is optimally suitable for the endoscopic use.
The fiber-optic can be led through the work canal of the endoscope. Under endoscopic view control, it therefore can be worked very aimed.
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