Double-ring iris expander for intraocular surgery

Abstract

The invention relates to a double-ring iris expander for an intraocular surgery. The double-ring iris expander consists of an upper ring, a lower ring and an elastic macromolecule film which is connected with the upper ring and the lower ring, wherein the diameter of the upper ring is smaller than that of the lower ring; a plurality of annular small ears which are distributed in an equal distanceare arranged on the inner side of the macromolecule film which is connected with the upper ring and the lower ring; the upper ring and the lower ring can be folded to be placed in the same plane; a groove of which the concave surface faces the center of a ring is formed through the plane and the elastic macromolecule film; and the diameter difference between the upper ring and the lower ring can enable the upper ring to be embedded in the lower ring. According to the double-ring iris expander disclosed by the invention, under the situation that a conventional cataract surgery incision is not increased or extended, a pupil of a patient suffering from a cataract surgery or a vitreous body surgery can be sufficiently, quickly, softly and minimally invasively extended, the surgery field can besufficiently exposed, the possibility of accidentally sucking and accidentally injuring the iris is reduced, the surgery time is shortened, postoperative reactions and complications are alleviated, and prognosis of the patient subjected to the cataract surgery and the patient subjected to the vitreous body surgery is improved.

Description

technical field [0001] The invention belongs to a kind of iris dilation surgical instrument of clinical medical ophthalmology. It is used to realize minimally invasive, fast and safe pupil dilation in cataract and vitreoretinal surgery. Background technique [0002] Cataract is currently the leading cause of blindness in the world. As the only effective treatment for cataract, cataract surgery is currently the largest operation in ophthalmology; vitreoretinal surgery can solve many common blinding eye diseases, such as retinal detachment, vitreous hemorrhage, diabetic retina The number of surgeries is also increasing day by day as the only means of treatment for lesions, macular holes, etc. In these two types of operations, a prerequisite is sufficient dilation of the pupil to expose the surgical field and facilitate the operation, while also reducing the chance of accidental damage to the iris tissue during the operation. [0003] However, with the aging of the population...

AI Technical Summary

Problems solved by technology

However, most of the current pupil dilation devices have obvious disadvantages, such as the need to make multiple incisions to meet the needs of the implanted device, which increases surgical trauma (iris retractor, Assia), and the multi-faceted three-dimensional design of the device is complicated to retract and deploy. Difficulty, inability to insert through smaller incisions thus increasing surgically induced astigmatism (Malyugin ring, NT xpander) and non-adjustable size resulting in limited application (all but Greater), etc.

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