The angle of radiation of CO2 laser is very small and its energy density is high. Output power density will reach several kilowatts per square cm. If it is focused. So the boiloff and cautery of focus tissue can be used in the therapy. Also if it isn't focused, the laser radiating focus tissue can bring about concretion effect.

CO2 laser outputs infrared rays. Whose wavelength is 10.6nm. Its penetrability is comparative large. If it is enlarged, it is good for the heating-up physical therapy of the deepest tissue. Because it can incise focus tissue after focusing, CO2 laser therapy instrument is also considered as laser scalpel.

1. Dermatology: Facial cosmetology, body freckle, nevus, tumour, wart, skin cancer, the instrument can excise anything superfluous or unless in order to make people strong and handsome and to prevent pathological changing.
2. E. N. T: All kinds of rhinitises, nose polyps, pharyngitises, oral hemangiomas.
3. Ophthalmology: Orbit tumour, eyelid, sty, double blood skin.
4. Gynecology: Chronic cervicitis, valvar angiofibromata, cervical erosion, leukoplakiavulvae, excesion uterus polyp, cervical carcinoma in situs, etc.
5. General surgery: Haemorrhoids, aal fissure and anal fistula, phimosis, V. D. etc.
6. Others: Underarm odour, corn, ulcer.