Surgical device for curing glaucoma by femtosecond laser transmitted by energy transmission optical fiber

Abstract

The invention provides a surgical device for curing glaucoma by femtosecond laser transmitted by an energy transmission optical fiber. The surgical device comprises a femtosecond laser (1), a femtosecond laser output tail fiber (2) and an energy transmission optical fiber (4). One end of the energy transmission optical fiber (4) is fused with the femtosecond laser output tail fiber (2) so as to transmit laser, and the other end of the energy transmission optical fiber (4) is connected with a convex lens (5) through a lens seat (6), or the end face of the other end of the energy transmission optical fiber (4) is of a spherical structure (7) so as to realize the spherical refraction effect to focus laser light. The surgical device can be operated more finely in the water environment, can perform filtration surgery by substituting a scalpel, and has the advantages that hurts to surrounding tissues from the surgery and postoperation fibrosis effect can be effectively reduced, postoperation scarring is alleviated, and effect time is long and the like.

Description

technical field [0001] The invention belongs to the field of medical instruments, and relates to a laser surgery treatment device, in particular to a laser surgery device for treating glaucoma. Background technique [0002] At present, glaucoma is a group of diseases characterized by optic nerve atrophy and visual field defect. The damage is irreversible. It is currently the second leading cause of blindness in the world and seriously threatens human visual health. The main mechanism is: the outflow of aqueous humor is blocked, resulting in the accumulation of aqueous humor in the eye, increasing intraocular pressure, thereby compressing and damaging the optic nerve, causing a series of clinical manifestations mainly including decreased vision and narrowing of the field of vision, and eventually blindness. The most common surgical method for treating glaucoma is filtering surgery. That is to establish a new way of drainage of aqueous humor outside the eye, and to create a f...

AI Technical Summary

Problems solved by technology

Method 1 determines that femtosecond laser transmission is carried out in an open space, which brings unsafe factors to users. At the same time, various optical lenses need to be adjusted to meet the conditions of use of femtosecond laser, resulting in extremely inconvenient use, especially for Non-professionals, in addition, this method is only suitable for linear transmission, not for operations such as subconjunctival or anterior chamber

In the second method, the photonic crystal fiber has a porous structure, which determines that it has the following disadvantages in application: 1. The photonic crystal fiber with a porous structure is not suitable for end-face treatment, and the pore structure will be closed and collapsed during cutting and welding, which will damage the photonic crystal. Optical fiber structure, resulting in decreased transmission performance

2. Photonic crystal fibers with a porous structure cannot enter liquid-containing materials such as biological tissues, otherwise the liquid will penetrate into the fiber hole structure and cause femtosecond laser transmission failure

3. At present, there is no technology that can make a lens on the end face of a photonic crystal fiber to focus the laser energy to achieve the corresponding effect on the tissue

Therefore, the focus needs to pass through the external lens, which has higher requirements on the environment

4. The femtosecond laser energy transmitted by the optical fiber is proportional to the diameter of the optical fiber, while the diameter of the photonic crystal optical fiber is small, and the transmission energy is not large enough to make an incision on the sclera

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