Microscopic flap lifting device used in LASIK (laser-assisted in situ keratomileusis) operation for femtosecond flap making

Abstract

The invention relates to a microscopic flap lifting device used in LASIK (laser-assisted in situ keratomileusis) operation for femtosecond flap making, comprising a flap lifting part and a handle, wherein the flap lifting part is fixedly arranged on the upper end of the handle; the flap lifting part includes a straight rod section, an arc section and a flat spade section which are manufactured integrally and connectedly; the lower end of the straight rod section is coaxially connected with the upper end of the handle, the upper blunt angle turning of the straight rod section is connected with the arc section, the section diameter and conical degree of the arc section become smaller gradually, the terminal end of the arc section is connected with the flat spade section with oval tips, and the cross section of the flat spade section is centrally thick and peripherally thin in shape. The microscopic flap lifting device disclosed by the invention can thoroughly separate corneal stroma flaps and reduce corneal flap damage, corneal flap dissociation and other complications during separation process, and is helpful for completely lifting the flap; meanwhile, the oval flat chisel section can reduce separation difficulty caused by opaque bubble layer (OBL) and reduce the damage on corneal tissue caused by repeated operation, and is helpful for post-operative wound recovery.

Description

technical field [0001] The invention belongs to the field of medical instruments, and relates to microsurgical instruments related to corneal refractive surgery, in particular to a microscopic flap lifter for femtosecond flap-making LASIK surgery. Background technique [0002] Excimer laser in situ keratomileusis (laser in situ keratomileusis, LASIK) is currently the mainstream of corneal refractive surgery, and its safety and effectiveness have gradually been widely recognized by the majority of patients with refractive errors. The production of the corneal flap is one of the key steps. At present, the microkeratome is widely used to complete the production of the corneal flap, but it has a relatively high risk, and some serious complications related to the flap are prone to occur, such as incomplete flap, broken flap, free flap, etc. Flaps, button flaps, etc., have seriously affected the operation and the recovery of postoperative vision, resulting in a decline in visual q...

AI Technical Summary

Problems solved by technology

However, the thinner corneal flap makes it more difficult to lift the flap. The thinner corneal flap is prone to microfolds after surgery, which affects postoperative vision. For this reason, the width of the pedicle can be appropriately increased, but at the same time, it is necessary to prepare for the next step of excimer laser ablation. Provides sufficient optic zone, thus requires sufficient separation of the peripheral corneal flap below the pedicle

[0003] Through searching, no published patent documents related to this patent application have been found

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