Due to the softness, small size, light weight and high sensitivity of optical fibers, the application range of optical fibers in medicine is also very wide, mainly for the production of various endoscopes. The optical fiber is mainly based on the total reflection of light in the optical fiber, and the light emitted from the external light source is introduced into the body through the fiber bundle to illuminate the part of the human body that needs to be inspected, and then the observed image of the internal organ is transmitted out of the body through the fiber bundle. Endoscopes widely used in hospitals, such as gastroscopes, proctoscopes, bronchoscopes, etc., are based on the principle that light is totally reflected multiple times on the surface of the glass fiber. In addition, high-power laser fiber has the following applications in medical applications:

 Laser beauty

Laser cosmetology is a new laser medical technology that has emerged in recent years. It uses optical fiber to transmit lasers to remove and improve flaws or defects that affect aesthetics, such as laser removal of port wine stains, tattoos and laser wrinkles.

 Laser treatment of disc herniation

Percutaneous laser disc decompression is the use of laser thermal energy effect, which causes the prominent nucleus pulposus of the intervertebral disc to vaporize and form a cavity, reducing the pressure in the intervertebral disc, thereby reducing or eliminating the compression of the nerve, thereby achieving the purpose of treatment.

 Laser treatment of varicose veins

The fiber is introduced into the varicose vein, the laser wall is used to shrink the vein wall, and the lumen is closed. It is not necessary to strip the vein as usual, so that the minimally invasive advantage can be maximized and the patient can get out of bed on the day after surgery.