CN216168088U - Artificial lens fixed in posterior capsule hole - Google Patents

Abstract

The utility model relates to an artificial lens fixed in a posterior capsule hole in the field of medical ophthalmology implanting devices, which comprises an anterior optical part and a posterior optical part and is characterized in that the anterior optical part and the posterior optical part are connected through a transition neck, a pair of connecting climbers are arranged in the radial symmetrical direction of the periphery of the anterior optical part, a pair of arc-shaped flanges which are outwards protruded radially are arranged in the radial symmetrical direction of the periphery of the posterior optical part, after the artificial lens is implanted into a lens capsule, the transition neck is clamped in the posterior capsule hole at the arc center of a posterior capsule, the posterior optical part is positioned at the rear side of the posterior capsule hole, and the arc-shaped flanges are adhered to the rear side of the posterior capsule. The artificial lens is particularly suitable for correcting the light bending error after various cataract operations of children, old people and the like, can prevent the occurrence of posterior cataract to the maximum extent, and keeps the transparency of the visual axis for the whole life.

Description

An intraocular lens fixed in the posterior capsular hole

technical field

The utility model relates to the field of medical ophthalmic implant devices, in particular to an artificial lens fixed to a posterior capsule hole.

Background technique

In the prior art, conventional intraocular lenses are single-piece convex lens optical zones, which are implanted in the lens capsular bag of cataract patients to replace the original cloudy lens, so that patients can see clearly and regain light. This single-piece intraocular lens has poor applicability for patients with posterior cataracts and children with cataracts. Generally, there are 2-3 connecting climbers around the optic zone of the single-piece lens for fixing with the capsular bag, and the fixation effect is not ideal. , It is easy to move the optical zone during postoperative exercise, so that the focus of the lens in the optical zone moves back and forth and the vision is unclear. In addition, the single-piece intraocular lens is implanted into the capsular bag as a whole. When the failure occurs after a period of surgery, the posterior capsular area is cloudy, and the surgical operation is very inconvenient to observe. At the same time, the operation needs to be performed from the vitreous side during the operation. , It is more traumatic to the patient, and the postoperative effect is unstable, especially for children with cataract.

Utility model content

Aiming at the problem of unstable fixation after implantation of the intraocular lens in the prior art and being unsuitable for post-traumatic surgery, the utility model provides an intraocular lens fixed in the posterior capsular hole, so as to prevent the occurrence of postoperative post-traumatic disorder and prevent the occurrence of optical defects. Area focus is unstable.

The purpose of the present utility model is achieved in this way, an intraocular lens fixed to the posterior capsular hole, including an anterior optical part and a posterior optical part, characterized in that the anterior optical part and the posterior optical part are connected by a transition neck , a pair of connecting flaps are arranged in the radially symmetrical direction of the outer periphery of the front optical part, and a pair of radially outwardly convex arc flashes are arranged in the radially symmetrical direction of the outer periphery of the rear optical part. After the intraocular lens is implanted in the lens capsular bag , the transition neck is clamped in the posterior capsular hole in the center of the posterior capsular arc, the rear optical part is located at the rear side of the posterior capsular hole, and the arc-shaped flashing edge is attached to the rear of the posterior capsular membrane.

The intraocular lens of the utility model is provided with a front optical part and a rear optical part, and a transition neck is arranged between the two optical parts. For the fixation of the optical part in the capsular bag, the flash at the periphery of the posterior optical part lifts the posterior capsular bag, so that the posterior capsular hole is stably stuck in the periphery of the transition neck, preventing the focus of the optical part from moving. And the transition neck is always fixed in the posterior capsular hole, so that the posterior capsular bag corresponding to the transition neck is always transparent. The central area is always transparent, so as to avoid the occurrence of postoperative complications to the greatest extent. The optical part is located in front of the vitreous behind the posterior capsular bag. Even if the posterior capsular bag is surrounded by posterior obstruction and is turbid, the central area is always transparent, and the patient can still have a certain visual ability. The operation of excising the glass ensures the integrity of the vitreous body. Therefore, the intraocular lens of the present utility model is particularly suitable for correcting refractive errors after various types of cataract operations for children and the elderly, and can prevent the occurrence of later cataracts to the greatest extent, and maintain the transparency of the visual axis for life.

As an improvement of the present utility model, the connecting pads and the arc-shaped flash are staggered along the circumferential direction.

Further, each of the arc-shaped flash edges protrudes outward by 1.5-2.0 mm.

In order to facilitate the fixation with the posterior capsular hole, the outer periphery of the transition neck is provided with a concave arc groove, and the arc groove has a concave depth of 0.8-1.0 mm toward the radial center direction of the lens.

Further, the front side of the front optical portion is provided with a forward convex arc-shaped optical surface, the rear optical portion is provided with a backward convex arc-shaped optical surface, and the curvature of the optical surface of the front optical portion is The radius is larger than the radius of curvature of the optical surface of the rear optical portion.

Description of drawings

FIG. 1 is a rear view of the intraocular lens fixed to the posterior capsular hole of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 .

FIG. 3 is a cross-sectional view taken along the line BB in FIG. 1 .

Among them, 1 front optical part; 1A front optical surface; 2 rear optical part; 2A rear optical surface; 3 connecting climbing; 4 arc flash; 5 transition neck.

Detailed ways

As shown in Fig. 1-Fig. 2, the intraocular lens fixed to the posterior capsular hole of the present invention includes an anterior optical portion 1 and a posterior optical portion 2. The front side of the anterior optical portion 1 is provided with a forward convex arcuate The front optical surface 1A and the rear optical part 2 are provided with a rear optical surface 2A that is convex to the rear, and the curvature radius of the front optical surface 1A is greater than the curvature radius of the rear optical surface 2A; the front optical part 1 and the rear optical part 2 They are connected by a transition neck 5, a pair of connecting flanges 3 are arranged on the outer circumference of the front optical part 1 in a radially symmetrical direction, and a pair of radially outward convex arc flashes 4 are arranged on the outer circumference of the rear optical part 2 in a radially symmetrical direction, and the connecting flanges are connected. 3 and arc-shaped flash edges 4 are staggered in the circumferential direction. After the intraocular lens of this structure is implanted into the lens capsular bag, the transition neck 5 is clamped in the posterior capsular hole in the center of the arc of the posterior capsular bag, the posterior optical part 2 is located behind the posterior capsular hole, and the arc-shaped flash 4 is fixed after the the posterior side of the capsule.

In order to adapt to the intraocular structure and implantation operation, in the intraocular lens of the present invention, each arc-shaped flash 4 protrudes outward by 1.5-2.0 mm; The concave depth of the lens in the radial center direction is 0.8-1.0 mm.

When performing the intraocular lens implantation of the present invention, first, after making the main incision and side incision of the cornea, inject an appropriate amount of viscoelastic into the anterior chamber, and use capsulorhexis forceps to make the outer diameter of the anterior optic (about 7.0 mm) of the anterior capsular hole, water separation and water stratification were performed, respectively, the lens nucleus and part of the cortex were removed by phacoemulsification, and the residual lens cortex was cleaned with an injection/suction needle. Release an appropriate amount of perfusate in the anterior chamber, inject an appropriate amount of viscoelastic agent into the anterior chamber and posterior chamber to make the posterior lens capsule in a horizontal position, and use capsulorhexis forceps to make a posterior capsule suitable for the diameter of the transition neck (about 5.0mm). film hole; inject viscoelastic agent into the capsular bag to fully open the capsular bag; insert the head of the injector equipped with the intraocular lens of the present utility model into the capsular bag, slowly push out the intraocular lens, and insert the front optical lens into the capsular bag. Part 1 is facing the anterior chamber, and the intraocular lens is implanted into the lens capsular bag with the lens positioning hook; then use the positioning hook to press the anterior edge of the anterior optical part 1 to make the posterior optical part 2 pass through the posterior capsular hole, and make the two arcs. Flash 4 is placed behind the posterior capsular hole. The injection/suction needle sucked the viscoelastic agent in the capsular bag and the anterior chamber, and injected balanced salt solution between the corneal layers to seal the main incision and lateral incision of the cornea, and the operation was ended.

After the implantation is completed, the anterior optic portion 1 of the IOL is located in the capsular bag, the connecting limb 3 is supported in the anterior capsule, the posterior optic portion 3 is located at the back side of the posterior capsule, and the transition neck 5 is fixed with the posterior capsular hole. , the arc-shaped flash edge 4 is supported on the back side of the posterior capsule, so as to realize the stable support of the intraocular lens and avoid the optical focus shift of the lens during movement. And the transition neck 5 is always fixed in the posterior capsular hole, so that the posterior capsular bag part corresponding to the transition neck is always kept transparent. The central area of is always transparent, thus ensuring the observation and laser manipulation of the posterior barrier surgery. After implantation, the posterior optical part 2 is located in front of the posterior vitreous body of the posterior capsule, and the operation of excising the glass is not required during the posterior barrier surgery, so as to ensure the integrity of the vitreous body. The intraocular lens of this structure is especially suitable for those who are prone to post-complication or children with cataracts.

Claims (5)

1. The artificial lens fixed in the posterior capsular sac hole comprises an anterior optical part and a posterior optical part and is characterized in that the anterior optical part and the posterior optical part are connected through a transition neck, a pair of connecting climbers are arranged in the radial symmetric direction of the periphery of the anterior optical part, a pair of arc-shaped flanges which protrude outwards in the radial symmetric direction of the periphery of the posterior optical part are arranged in the radial symmetric direction of the periphery of the posterior optical part, after the artificial lens is implanted into the lens capsular sac, the transition neck is clamped in the posterior capsular sac hole in the arc center of the posterior capsular sac, the posterior optical part is positioned on the rear side of the posterior capsular sac hole, and the arc-shaped flanges are attached to the rear side of the posterior capsular sac.

2. The intraocular lens affixed to the posterior capsule aperture of claim 1, wherein the attachment tabs are circumferentially staggered from the arcuate flyers.

3. The intraocular lens fixed to the posterior capsular sac hole according to claim 1, wherein each of the arcuate flashes protrudes outwardly by 1.5 to 2.0 mm.

4. The intraocular lens fixed on the posterior capsular sac hole according to claim 1, wherein the outer circumference of the transition neck is provided with an inward-concave arc groove, and the depth of the inward concave arc groove towards the radial center of the lens is 0.8-1.0 mm.

5. The intraocular lens fixed to the posterior capsule aperture according to claim 1, wherein the anterior optical portion has an anterior convexly curved optical surface on the anterior side thereof, the posterior optical portion has a posteriorly convexly curved optical surface, and the anterior optical portion has a larger radius of curvature than the posterior optical portion.

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