A non-invasive intraocular pressure detection sensor based on microfluidic technology

Abstract

The invention discloses a non-invasive ocular pressure detection sensor based on a micro-fluidic technology. The detection sensor comprises a corneal contact lens, a spiral inductor, a fringing capacitor and an inner ring capacitor, wherein cavities and a micro-fluidic channel are arranged in the corneal contact lens; the cavities and the micro-fluidic channel communicate and are used for keeping fluid, and the fluid is conveyed into the micro-fluidic channel; the amount of the fluid which is conveyed into the micro-fluidic channel is affected by ocular pressure , and capacitance of the inner ring capacitor varies with the amount of the fluid which is conveyed into the micro-fluidic channel; and a CLC loop is constituted by the fringing capacitor, the spiral inductor and the inner ring capacitor, so that the ocular pressure is detected. With the application of the ocular pressure detection sensor disclosed by the invention, the problem that the ocular pressure sensor is inconvenient for night supervision is effectively solved, and the fluctuation of the ocular pressure can be measured with high precision in a whole course within 24h; and the detection sensor has the advantages of being simple in structure, convenient to manufacture, high in sensitivity and broad in dynamic scope.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and more specifically relates to a non-invasive intraocular pressure detection sensor based on microfluidic technology. The intraocular pressure detection sensor adopts a C-L-C structure and is a wireless passive non-invasive Eye pressure detection sensor. Background technique [0002] Glaucoma is the world's first irreversible blinding eye disease. Medical research shows that glaucoma is a disease characterized by optic nerve damage and visual field defects due to pathological elevated intraocular pressure. The increase in intraocular pressure is an important indicator for the diagnosis and treatment of glaucoma, and studies have shown that the intraocular pressure of glaucoma patients fluctuates greatly within 24 hours, and generally reaches the peak during sleep and early morning. No intraocular pressure measurement will be performed. Therefore, it is of great significance to realiz...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the purpose of the present invention is to provide a non-invasive intraocular pressure detection sensor based on microfluidic technology, wherein the structure, material and connection between the various components critical to it Compared with the existing technology, it can effectively solve the problem that the intraocular pressure sensor is not convenient for night monitoring, and realize high-precision, 24-hour full-range measurement of intraocular pressure fluctuations

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