Corneal trephine

A corneal trephine and ring-shaped technology, which is applied in ophthalmic surgery and other directions, can solve the problems of inability to flexibly adjust and control the drill and bottom, cannot be used stably, and cannot expand and support the eyelids, etc. It is convenient for observation and surgery, easy to operate, and stable placement Effect

Active Publication Date: 2021-12-03
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the above solution can fit the shape of the lesion when drilling and cutting the cornea and is not easy to be destroyed, its effect i...

Method used

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  • Corneal trephine
  • Corneal trephine
  • Corneal trephine

Examples

Experimental program
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Effect test

Embodiment Construction

[0027] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0028] Such as figure 1 , figure 2 , image 3 and Figure 4 As shown, a corneal trephine includes a sleeve 1, a transmission cylinder 2 is arranged inside the sleeve 1, a snap ring 3 connected to the sleeve 1 is installed on the outside of the transmission cylinder 2, an eyepiece 4 is installed on the upper end of the transmission cylinder 2, The outer side of the eyepiece 4 is provided with a vertical edge, the outer side of the lower part of the transmission cylinder 2 is slidingly connected with an inner cylinder 5, and the outer side of the lower end of the transmission cylinder 2 is fixedly connected with four stoppers 6, and the inner side of the inner cylinder 5 is provided with a limiter that fits with the stopper 6. The bit groove 7, the lower end of the inner cylinder 5 is threadedly connected with an annular cutting head 8, t...

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Abstract

The invention discloses a corneal trephine, and relates to the technical field of ophthalmology medical instruments. The corneal trephine comprises a sleeve, wherein a transmission cylinder is rotationally connected to the inner part of the sleeve, an eyepiece is arranged on the transmission cylinder, an inner cylinder is slidably connected to the outer side of the transmission cylinder, limiting blocks are arranged at the lower end of the transmission cylinder, limiting grooves are formed in the inner side of the inner cylinder, an annular cutting head is arranged at the lower end of the inner cylinder, and a sawtooth ring face is formed on the outer side of the inner cylinder; a through groove is formed in the outer side of the sleeve, and baffles and a rotating shaft are arranged on the through groove; and a gear meshed with the sawtooth ring face is arranged on the rotating shaft, a fixing mechanism is arranged on the baffles, two supporting rods are rotationally connected to the lower end of the sleeve, a screwing bolt is arranged on the supporting rods, expanding and supporting plates are arranged at the lower ends of the supporting rods, and a lamp panel is arranged at the bottom of the sleeve. The cornea trephine can stably and conveniently drill and cut the cornea of a patient.

Description

technical field [0001] The invention belongs to the technical field of ophthalmic medical instruments, and in particular relates to a corneal trephine. Background technique [0002] Blinding corneal disease, diabetic retinopathy, and glaucoma have become the three leading blind eye diseases in the world today. Blinding keratopathy is mostly caused by infectious keratitis, corneal dystrophy, corneal degeneration, or corneal trauma. Currently, the only way to restore sight to patients with blinding corneal disease is a corneal transplant. According to statistics, there are more than 1,500,000 blinding corneal disease patients in my country, but because the source of corneal donors is very limited, there are only about 10,000 patients who can accept corneal transplantation every year. [0003] Therefore, improving the survival rate of corneal donors, perfecting corneal transplantation, and reducing intraoperative and postoperative complications are crucial to the success of c...

Claims

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Application Information

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IPC IPC(8): A61F9/007
CPCA61F9/007
Inventor 唐静邓应平
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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