Preparation method of collar button type artificial cornea

Abstract

The invention particularly discloses a preparation method of a collar button type artificial cornea. The method is applied to the production process of the collar button type artificial cornea comprising a lens column, a rear plate and a clamping ring. The method comprises the following steps: S1, preparing a processing blank, and inputting the processing blank into a numerical control lathe; S2,machining into the lens column, the rear plate and the clamping ring by using the numerical control lathe, deburring and cleaning; S3, drying; S4, combining and packaging the lens column, the rear plate and the clamping ring by using a cleaned packaging material to form a collar-type artificial cornea preoperative packaging kit; and S5, sterilizing the collar-type artificial cornea preoperative packaging suite provided with the lens column, the rear plate and the clamping ring. The precision and definition of the collar button type artificial cornea can be improved, batch and standardized production of the collar button type artificial cornea can be achieved, the production efficiency and the finished product percent of pass are greatly improved, and the risk that the collar button type artificial cornea is polluted in the preparation process and the risk that accessories are not unified are reduced.

Description

technical field [0001] The invention relates to the technical field of biomedical engineering and artificial cornea production, in particular to a method for preparing a collar button artificial cornea. Background technique [0002] In July 2019, according to "People's Daily Online" and "Southern Metropolis Daily" and other media reports: "my country's first self-developed collar button artificial cornea clinical trial was successful." This means that the medical application of the domestic collar button artificial cornea has taken an important step, and it has initially adapted to clinical applications, but its structure optimization and industrial production still need research and development breakthroughs. The collar button type artificial cornea comprises a mirror column, a rear plate serving as a mounting bracket for the mirror column, and a collar clamped on the outside of one end of the mirror column. The mirror column is made of transparent materials with excellent...

AI Technical Summary

Problems solved by technology

The back plate is made of hard material with better biocompatibility. The back plate has a central through hole for installing the mirror column. Its function is to support the carrier cornea. Therefore, the back plate needs to have a certain curvature to be attached. For the cornea, the traditional processing method is to process it into a flat metal disc first, and then punch it into a curved surface with a certain curvature by punching. The problem with this processing method is that after stamping, internal stress will be generated inside the metal. Long-term The curvature of the back plate is easy to change, resulting in pressure on the carrier cornea, resulting in dissolution and necrosis of the carrier cornea. In addition, the method of punching the titanium back plate will also cause the joint between the back plate and the mirror column to not completely match, increasing the leakage of aqueous humor and the risk of intraocular infection

In addition, the common artificial cornea preparation methods include 3D printing molding or mold casting integrated molding. The preparation process is relatively cumbersome and difficult to adapt to mass production and standardized production. Large and reduced visual clarity

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