Ultrasonic capsulorhexis needle, ultrasonic operation tool and using method

Abstract

The invention discloses an ultrasonic capsulorhexis needle for cataract suction, which comprises a metal connector and a needle body. The metal connector and the needle body are of a split structure; the needle body is connected to the rear of the metal connector; the metal connector is fixedly connected to the far end of an ultrasonic emulsification handle; and the furthest end of the needle body is the tip end. The ultrasonic capsulorhexis needle has the beneficial effects that weaknesses of burning a capsule by an electrode are avoided; by the tip end of the capsulorhexis needle which is driven ultrasonically, a lens capsule bag can be more effectively and softly torn; and moreover, the ultrasonic frequency can be flexibly reduced and even not started according to conditions and only the conventional step of manually tearing the capsule is adopted, so that great flexibility is brought to a doctor. According to the ultrasonic capsulorhexis needle for cataract suction, the pressure applied to eyes in the process of tearing the capsule can be reduced, the capsulorhexis process is easier to operate, safety is improved, and the ultrasonic capsulorhexis needle is particularly further required by patients suffering from special conditions, such as cataract patients of which ciliary suspensory ligaments are weak, extra-hard or excessively soft.

Description

technical field [0001] The invention relates to an ultrasonic capsulorhexis needle for cataract suction surgery, which belongs to the field of medical equipment, in particular to the field of ophthalmic cataract phacoemulsification surgery. Background technique [0002] In the past two decades, the application of ultrasonic surgery has become more and more extensive, both in the type of surgery and in the number of patients. Especially in ophthalmic cataract surgery, phacoemulsification surgery is widely used due to its unique advantages. Favored by doctors and patients. [0003] During ultrasonic cataract extraction, before the phacoemulsification needle is inserted into the lens capsular bag, a circular opening with a diameter of about 5 mm must be torn in the anterior chamber capsular bag. At present, the commonly used technique is manual continuous circular capsulorhexis. First, a small opening is poked with a capsulorhexis needle or tweezers, and then the edge of the c...

AI Technical Summary

Problems solved by technology

The disadvantage of this technique is that there is an electric field and high heat are introduced into the eye, and the edge of the capsulorhexis is weakened due to thermal damage, which reduces the safety of the operation.

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