24-hour intraocular pressure monitoring sensor based on fiber gratings

Abstract

The invention discloses a 24-hour intraocular pressure monitoring sensor based on fiber gratings. The 24-hour intraocular pressure monitoring sensor based on the fiber gratings comprises a soft corneal contact lens, an optical fiber and a plurality of fiber gratings, wherein the corneal contact lens is spherical crown-shaped and used for fitting with the eyeball of a patient in a shape matching mode when wearing; the optical fiber is embedded in the lens layer of the corneal contact lens, the body is arrayed in an Achimedean spiral mode around the center of the contact lens, and the tail end thereof is led out to serve as an interaction port; the fiber gratings are arranged on the optical fiber at intervals, when the eyeball is deformed due to intraocular pressure undulation, the fiber gratings bear the corresponding stress change, and corresponding feedback optical wave signals are output through the tail port of the optical fiber. The 24-hour intraocular pressure monitoring sensor based on the fiber gratings is capable of realizing real-time high-precision measurement for the pressure of multiple sites according to the reflection wavelength change, and meanwhile, the 24-hour intraocular pressure monitoring sensor based on the fiber gratings has advantages of high sensitivity, large dynamic range, good stability, comfortable use, small volume, light weight and the like.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and more specifically relates to a 24-hour intraocular pressure monitoring sensor based on a fiber grating. Background technique [0002] Glaucoma is the world's first irreversible blinding eye disease. Medical practice has found that elevated intraocular pressure is not the only risk factor for glaucoma damage. Pathological intraocular pressure fluctuations also play an important role in the development of glaucoma, and its manifestations are more hidden. Therefore, it is more important to pay attention to the 24-hour fluctuation of intraocular pressure than to only pay attention to the absolute value of intraocular pressure. This view has become the consensus of glaucoma experts all over the world. [0003] The current clinical method for monitoring 24-hour intraocular pressure fluctuations is usually measured every 2 hours, but this way of replacing the whole process of 24-hour fluctu...

AI Technical Summary

Problems solved by technology

However, further in-depth research shows that the product still has the following defects or deficiencies in the clinical trial process: 1) The repeatability is controversial; 2) Some output signals of the sensor cannot be resolved; 3) The detection accuracy is not high and the sensitivity is not enough; 4) The output voltage signal can only reflect pressure fluctuations and cannot be converted into the real intraocular pressure amplitude; 5) Poor comfort, complex manufacturing process, and high cost lead to certain limitations in clinical promotion

Images