Development of laser diode otolaryngological intracavity procedures and its clinical practice

Qingguo Wang; Haitao Mao; Hongjian Bu; Xingfa Dong; Jikai Li; Fangzheng Li; Wenqing Zhang

doi:10.1117/12.317886

7 August 1998 Development of laser diode otolaryngological intracavity procedures and its clinical practice

Qingguo Wang, Haitao Mao, Hongjian Bu, Xingfa Dong, Jikai Li, Fangzheng Li, Wenqing Zhang

Proceedings Volume 3548, Biomedical Optics and Lasers: Diagnostics and Treatment; (1998) https://doi.org/10.1117/12.317886
Event: Photonics China '98, 1998, Beijing, China

Abstract

Because laser is diffusely reflected by the skin as well as scattered and absorbed by the subcutaneous tissue, the lasing intensity which enters into the tissue through the skin is exponentially attenuated with the increase in the depth. Therefore, when the medium-small energy laser is transmitted to the tissue depth through the skin, the lasing intensity is quite finite. However, a lot of diseases occur in the crooked and narrow tube, sinus or deep tissue, for these diseases, it is difficult to get the curative effect by normal laser radiation. As above, we have developed an otolaryngological intracavity therapeutic apparatus of laser diode. Visible GaAlAs laser diode is adopted on this apparatus, its lasing wavelength is 670 nm. The lasing beam is guided into the crooked and narrow tube, sinus or deep tissue, which passes through the optical fiber and the laser pins of different forms and sizes (such as straight, curved and sidelight etc.). Using the fiber-optic connector the laser pins can be changed conveniently. The lasing output power of laser pin can be adjusted from 0 to 20 mW. The lasing intensity may be modulated which changes the rectangular wave form 0 to 1 kHz. Five hundred patients were suffering from 35 kind of otolaryngological diseases were treated in the period of clinical test. The rate of efficiency (cure or improvement) is 89%. Nobody had the side effect or deteriorated. This apparatus has the best curative effect on the inflammation of the mucosa and shallow tissue, such as auris media dropsy, maxillary sinus inflammation, auris external inflammation, chronic laryngitis, otitis media, tinnitus, vertigo, and so on.

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Qingguo Wang, Haitao Mao, Hongjian Bu, Xingfa Dong, Jikai Li, Fangzheng Li, and Wenqing Zhang "Development of laser diode otolaryngological intracavity procedures and its clinical practice", Proc. SPIE 3548, Biomedical Optics and Lasers: Diagnostics and Treatment, (7 August 1998); https://doi.org/10.1117/12.317886

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KEYWORDS

Semiconductor lasers

Tissues

Skin

Inflammation

Fiber lasers

Laser development

Laser therapeutics

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