CN216168088U

CN216168088U - Artificial lens fixed in posterior capsule hole

Info

Publication number: CN216168088U
Application number: CN202122512846.1U
Authority: CN
Inventors: 解正高; 蒋峰; 秦勤; 刘亚军; 张文文; 陈菲菲
Original assignee: Nanjing Drum Tower Hospital
Current assignee: Nanjing Drum Tower Hospital
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-05
Anticipated expiration: 2031-10-19

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

Artificial lens fixed in posterior capsule hole

Technical Field

The utility model relates to the field of medical ophthalmology implanting devices, in particular to an artificial lens fixed at a posterior capsular sac hole.

Background

In the prior art, conventional artificial lenses are all single-piece convex lens type optical areas and are implanted into a lens capsular bag of a cataract patient to replace an original turbid crystalline lens, so that the patient can see objects clearly again and obtain light. The single-chip artificial lens has poor applicability to patients with posterior cataract and children, 2-3 connecting climbers are arranged on the periphery of the optical area of the common single-chip artificial lens and are used for being fixed with the capsular bag, the fixing effect is not ideal, the optical area is easy to move when the artificial lens moves after operation, and the focus of the lens in the optical area moves back and forth, so that objects are not clearly seen. And the monolithic artificial lens is integrally implanted into the capsular bag, when the posterior capsule membrane area is turbid after the operation happens for a period of time, the operation is inconvenient to observe, and meanwhile, the operation needs to be carried out from the vitreous body side in the operation, the vitreous body behind the excision part has large trauma to a patient and unstable postoperative effect, and is not ideal particularly for children cataract patients.

SUMMERY OF THE UTILITY MODEL

The utility model provides an artificial lens fixed in a posterior capsule membrane hole, aiming at the problems that the fixation of the artificial lens after implantation is unstable and the artificial lens is not suitable for a posterior capsule operation patient in the prior art, so as to prevent the occurrence of postoperative cataract and unstable focus of an optical area.

The utility model aims to realize the artificial lens fixed in the posterior capsule hole, 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 in the radial symmetrical direction of the periphery of the posterior optical part are arranged in the radial symmetrical direction of the periphery of the posterior optical part, after the artificial lens is implanted into the lens capsule bag, the transition neck is clamped in the posterior capsule hole in the arc center of the 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 provided with an anterior optical part and a posterior optical part, a transition neck is arranged between the two optical parts, the transition neck is fixed in a posterior capsule membrane hole after being implanted into a capsule bag and is connected and fixed in the capsule bag in a climbing manner to ensure the fixation of the anterior optical part in the capsule bag, the rear capsule bag is lifted by the flash at the periphery of the posterior optical part, so that the posterior capsule membrane hole is stably clamped at the periphery of the transition neck to prevent the focus of the optical part from moving. And the transition neck is fixedly sleeved in the posterior capsule membrane hole all the time, so that the posterior capsule membrane part corresponding to the transition neck is kept transparent all the time, even if posterior capsule membrane is turbid after operation, the central area corresponding to the posterior capsule membrane hole is transparent all the time, thereby avoiding the occurrence of postoperative posterior capsule barrier to the maximum extent. The optical part is positioned in front of the vitreous body behind the posterior capsule bag, even if the peripheral of the posterior capsule bag generates posterior barrier and is muddy, the central area of the posterior capsule bag is always transparent, the patient still has certain object viewing capability, and finally, the operation of cutting the vitreous body is not needed when the posterior barrier operation is performed, so that the integrity of the vitreous body is ensured. Therefore, 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 capsule to the maximum extent, and keeps the transparency of the visual axis for the whole life.

As an improvement of the utility model, the connecting climbers and the arc-shaped flying edges are arranged in a staggered mode in the circumferential direction.

Further, each arc-shaped flash protrudes outwards by 1.5-2.0 mm.

In order to be convenient for being fixedly sleeved with the posterior capsular sac hole, the periphery 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 direction of the crystalline lens is 0.8-1.0 mm.

Further, an arc-shaped optical surface protruding forwards is arranged on the front side of the front optical portion, an arc-shaped optical surface protruding backwards is arranged on the rear optical portion, and the curvature radius of the optical surface of the front optical portion is larger than that of the optical surface of the rear optical portion.

Drawings

FIG. 1 is a posterior view of an intraocular lens of the utility model secured to the posterior capsular bag opening.

Fig. 2 is a cross-sectional view taken along a-a of fig. 1.

Fig. 3 is a cross-sectional view taken along B-B of fig. 1.

Wherein, 1 an anterior optic; 1A front optical face; 2a posterior optic portion; 2A rear optical surface; 3, connecting and climbing; 4, arc flash; 5 transition neck.

Detailed Description

As shown in fig. 1-2, the intraocular lens fixed to the posterior capsule aperture of the present invention comprises an anterior optical portion 1 and a posterior optical portion 2, wherein the anterior optical portion 1 is provided with an anterior optical surface 1A of an arc shape which is convex forward on the anterior side, the posterior optical portion 2 is provided with a posterior optical surface 2A of an arc shape which is convex backward, and the radius of curvature of the anterior optical surface 1A is larger than that of the posterior optical surface 2A; the front optical part 1 and the rear optical part 2 are connected through a transition neck 5, a pair of connecting climbers 3 are arranged in the radial symmetrical direction of the periphery of the front optical part 1, a pair of arc-shaped flanges 4 protruding outwards in the radial direction are arranged in the radial symmetrical direction of the periphery of the rear optical part 2, and the connecting climbers 3 and the arc-shaped flanges 4 are arranged in a staggered mode in the circumferential direction. After the artificial lens is implanted into the lens capsular bag, the transition neck 5 is clamped in a posterior capsular hole at the arc center of the posterior capsular bag, the posterior optical part 2 is positioned at the rear side of the posterior capsular hole, and the arc-shaped flash 4 is fixedly attached to the rear side of the posterior capsular bag.

In order to adapt to the intraocular structure and the implantation operation, in the artificial lens, each arc-shaped flash edge 4 protrudes outwards by 1.5-2.0 mm; the periphery of transition neck 5 is equipped with the arc groove of indent, and the degree of depth that the arc groove is to the radial central direction indent of crystalline lens is 0.8 ~ 1.0 mm.

When the artificial lens implantation of the utility model is carried out, firstly, after a main corneal incision and a side corneal incision are made, a proper amount of viscoelastic agent is injected into the anterior chamber, anterior capsule membrane holes which are adaptive to the outer diameter of an anterior optical part (about 7.0 mm) are made by using capsulorhexis forceps, water separation and water stratification are respectively carried out, a crystalline lens nucleus and a part of cortex are removed by ultrasonic emulsification suction, and residual crystalline lens cortex is completely sucked by an injection/suction needle head. Discharging a proper amount of perfusion fluid in the anterior chamber, injecting a proper amount of viscoelastic agent into the anterior chamber and the posterior chamber to enable the posterior capsule of the lens to be in a horizontal position, and manufacturing a posterior capsule membrane hole (about 5.0 mm) which is adaptive to the diameter of the transition neck by using capsule tearing forceps; injecting viscoelastic agent into the capsular bag to open the capsular bag completely; inserting the head of the injector with the intraocular lens of the utility model into the capsular bag, slowly pushing out the intraocular lens, directing the anterior optical part 1 to the anterior chamber, and implanting the intraocular lens into the capsular bag of the lens by using the lens positioning hook; and then the positioning hook is used for jacking and pressing the front edge of the front optical part 1 to enable the rear optical part 2 to pass through the posterior capsule hole, and two arc-shaped flanges 4 of the front optical part are placed behind the posterior capsule hole. The injection/suction needle head sucks the bullet in the bag and the anterior chamber, balanced salt solution is injected between the corneal layers to seal the main incision and the side incision of the cornea, and the operation is finished.

After implantation, the front optical part 1 of the artificial lens is positioned in the capsular bag, the connecting flap 3 is supported in the front capsular sac, the rear optical part 3 is positioned at the rear side of the rear capsular sac, the transition neck 5 is fixedly sleeved with the rear capsular sac hole, and the arc-shaped flash 4 is supported at the rear side of the rear capsular sac, so that stable support of the artificial lens is realized, and displacement of the optical focus of the lens during movement is avoided. And the transition neck 5 is fixedly sleeved in the posterior capsule membrane hole all the time, so that the posterior capsule membrane part corresponding to the transition neck is kept transparent all the time, even if posterior capsule membrane is turbid after operation, the central area corresponding to the posterior capsule membrane hole is transparent all the time, thereby ensuring the observation and laser operation of posterior capsule barrier operation. After implantation, the posterior optical part 2 is positioned in front of the posterior vitreous body of the posterior capsule, and the operation of cutting off the vitreous body is not needed when the posterior cataract surgery is performed, so that the integrity of the vitreous body is ensured. The artificial lens with the structure is particularly suitable for the patient with easy after-cataract or the patient with children cataract.

Claims

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.