CN114533341A

CN114533341A - Intraocular lens

Info

Publication number: CN114533341A
Application number: CN202210170241.5A
Authority: CN
Inventors: 马立威; 丁雨溪
Original assignee: Shenyang Aier Zhuoyue Ophthalmic Hospital Co ltd
Current assignee: Shenyang Aier Zhuoyue Ophthalmic Hospital Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-05-27

Abstract

The invention provides an intraocular lens which comprises a mounting part and an optical part, wherein the mounting part comprises a mounting part body and a supporting loop, a mounting groove is formed in the mounting part body, the supporting loop is connected with the mounting part body, the supporting loop extends towards the direction far away from the center of the mounting part body, and at least part of the supporting loop is positioned at the bottom of the mounting part body; the optical part is arranged in the mounting groove and detachably connected with the mounting part body. Compared with the prior art, the artificial lens provided by the invention can better guarantee the postoperative vision of a patient, and can facilitate the subsequent replacement of the optical part.

Description

Intraocular lens

Technical Field

The invention relates to the technical field of medical instruments, in particular to an artificial lens.

Background

With the rapid development of medical technologies at home and abroad, intraocular lens (IOL) implantation surgery is becoming more and more common. An intraocular lens is an artificial lens that can be implanted in the eye to replace the natural lens of the eye that has become clouded due to cataract disease or for refractive surgery to correct the vision of the eye.

However, posterior capsular opacification of the capsular bag of the prior art lens after implantation of the intraocular lens is an inevitable complication, which causes a further decrease in postoperative vision, requiring laser or another operation to remove the opacified capsular bag to restore transparency in the visual axis region and thereby improve vision. These secondary treatments increase the individual eye health risks and burden on medical resources of the patient.

And for the cataract operation of children, the refractive state of the operated eye can change along with the age increase of the sick children and the lengthening of the eye axis after the artificial lens is implanted, so that a larger refractive error occurs, and the children need to wear glasses for correction and even replace the artificial lens to accord with the prior diopter. Because of the special structure of children's eyes and the more obvious inflammatory reaction after operation, the peripheral part of the artificial lens implanted in early stage often adheres to the intraocular tissues such as lens capsule, iris, ciliary body and the like, and the whole artificial lens taken out by operation again has large damage and more complications.

Disclosure of Invention

The artificial lens aims at the technical problems that after the artificial lens in the prior art is implanted into a human body, the posterior capsule membrane is easy to be turbid, the postoperative vision of a patient is influenced, and the implanted artificial lens in the prior art is difficult to replace. The artificial lens provided by the invention can better guarantee the postoperative vision of a patient and can be conveniently replaced for the second time in the follow-up process.

An intraocular lens comprising a mounting portion and an optic portion;

the mounting part comprises a mounting part body and a supporting loop, the mounting part body is provided with a mounting groove, the supporting loop is connected with the mounting part body, the supporting loop extends towards the direction far away from the center of the mounting part body, and at least part of the supporting loop is positioned at the bottom of the mounting part body;

the optical part is arranged in the mounting groove and detachably connected with the mounting part body.

Preferably, the support tong "pan" includes first support tong "pan and second support tong" pan, first support tong "pan" the second support tong "pan all connect in the side of installation department body, just first support tong" pan "is located and is close to installation department body's bottom surface one side, the second support tong" pan "is located and is close to installation department body's top surface one side.

Preferably, the first support loop and the second support loop are respectively provided with three, the three first support loops are distributed in a circular array, the three second support loops are distributed in a circular array, and the edges of the two adjacent second support loops are connected with each other.

Preferably, the first support loop comprises a first inner loop and a first outer loop which are connected with each other, the first inner loop and the first outer loop are both in a circular arc shape, the first inner loop and the first outer loop are spaced from each other at the middle part, the second support loop comprises a second inner loop and a second outer loop which are connected with each other, the second inner loop and the second outer loop are both in a circular arc shape, and the second inner loop and the second outer loop are spaced from each other at the middle part.

Preferably, the cross section of installation department body is circular, just the diameter of installation department body is 6mm, first support tong "pan" outer end extremely the distance at installation department body center is 4.5mm, second support tong "pan" outer end extremely the distance at installation department body center is 6.5 mm.

Preferably, the mounting groove comprises a groove body and a clamping groove which are mutually communicated, the groove body is located in the middle of the mounting part body, the clamping groove is located at the edge of the groove body, the optical part comprises an optical part body and a clamping part, the clamping part is arranged at the edge of the optical part body, the optical part body is mounted on the groove body, and the clamping part is correspondingly clamped in the clamping groove.

Preferably, the groove body certainly the top surface of installation department body is sunken to form towards the bottom surface direction, the draw-in groove includes first portion and the second portion that communicates each other, the first portion certainly the top surface of installation department body is sunken to form towards the bottom surface direction, the second portion is located the bottom of first portion, just the second portion extends the setting along circumference.

Preferably, the groove body has a diameter of 5.5mm, the groove body has a recess depth of 1mm, the first portion has a groove length of 0.5mm, the first portion has a groove width of 0.25mm, the first portion has a recess depth of 0.5mm, the optical portion body has a maximum diameter of 5.5mm, and the latch portion has a length of 0.5 mm.

Preferably, the clamping grooves are three and three, and are distributed in an annular array, and the buckling parts are three and three, and are distributed in an annular array.

Preferably, the optical part is provided with a positioning hole.

Compared with the prior art, the artificial lens provided by the invention comprises a mounting part and an optical part, wherein the mounting part comprises a mounting part body and a supporting loop, a mounting groove is formed in the mounting part body, the supporting loop is connected with the mounting part body, the supporting loop extends towards the direction far away from the center of the mounting part body, and at least part of the supporting loop is positioned at the bottom of the mounting part body; the optical part is arranged in the mounting groove and detachably connected with the mounting part body. Through setting up the support tong "pan" in the bottom of installation part body for the support tong "pan" can be connected with lens slot form edge, thereby can be more effective with the restriction of front and back capsule edge outside intraocular lens's optical part, prevent to remain lens epithelial cell and move to the lens optical part of visual axis district, better guarantee patient's postoperative eyesight. And the optical part is detachably connected with the mounting part body, so that the optical part can be only taken out and replaced when a secondary operation is needed in the follow-up process, the taking-out is simpler, and the damage to a patient is reduced as much as possible.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic plan view of an intraocular lens according to one embodiment;

FIG. 2 is a schematic plan view of the mounting portion and optical portion of FIG. 1;

FIG. 3 is a perspective view of the mounting portion shown in FIG. 1;

fig. 4 is a schematic plan view of the mounting part shown in fig. 3.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "secured to," "mounted to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The invention provides an intraocular lens which comprises a mounting part and an optical part, wherein the mounting part comprises a mounting part body and a supporting loop, a mounting groove is formed in the mounting part body, the supporting loop is connected with the mounting part body, the supporting loop extends towards the direction far away from the center of the mounting part body, and at least part of the supporting loop is positioned at the bottom of the mounting part body; the optical part is arranged in the mounting groove and detachably connected with the mounting part body. The artificial lens can better guarantee the postoperative vision of a patient, and can facilitate the subsequent replacement of the optical part.

Please refer to fig. 1-4. The present embodiment provides an intraocular lens 100, which is used to confine migrating and turbid lens epithelial cells in a closed space, reduce their migration, prevent the opacity of the visual axis region, and reduce the occurrence of posterior cataract; the intraocular lens 100 can replace the optical part of the intraocular lens, that is, the whole intraocular lens does not need to be taken out when the intraocular lens replacement operation is needed, and only the optical part of the intraocular lens needs to be replaced, so that the intraocular lens is a novel intraocular lens.

Intraocular lens 100 includes installation portion 10 and optical portion 20, installation portion 10 includes installation portion body 11 and support tong "pan" 12, installation portion body 11 is last to have seted up mounting groove 111, support tong "pan" 12 with installation portion body 11 is connected, support tong "pan" 12 orientation is kept away from installation portion body 11 central direction extends, and at least part support tong "pan" 12 is located the bottom of installation portion body 11. That is, the support tab 12 is connected to the mounting portion body 11 and extends radially outward. The optical part 20 is mounted in the mounting groove 111, and the optical part 20 is detachably connected to the mounting part body 11. The optical portion 20 may have a convex-round structure.

It will be appreciated that most prior art intraocular lens implantation procedures place the intraocular lens within the capsular bag left after lens removal, with the outer capsular bag being substantially intact except for the annular tear in the anterior capsule when the lens is removed. And the residual lens epithelial cells can migrate along the posterior capsule, proliferate to form posterior capsule turbidity and cause vision deterioration, thereby affecting the postoperative vision of the patient. Resulting in the need to restore the visual transparency of the visual axis region by laser or re-surgical removal of the turbid capsular sac to improve vision, these secondary treatments increase the individual eye health risks and burden on medical resources of the patient.

Moreover, after the intraocular lens implantation operation is performed by some special people, the intraocular lens needs to be taken and replaced for the second time. For example, for cataract surgery of children, after an intraocular lens is implanted, the refractive state of an operative eye changes along with the age of a child patient and the length of an eye axis, so that a large refractive error occurs, and the child needs to wear glasses for correction or even replace the intraocular lens to conform to the existing diopter. Because of the special structure of children's eyes and the more obvious inflammatory reaction after operation, the peripheral part of the artificial lens implanted in early stage often adheres to the intraocular tissues such as lens capsule, iris, ciliary body and the like, and the whole artificial lens taken out by operation again has large damage and more complications. That is, after the artificial lens in the prior art is implanted into a human body, the posterior capsule membrane is easy to be turbid, so that the vision is reduced again, and the postoperative vision of a patient is affected. In addition, the artificial lens in the prior art is difficult to extract, other tissues of the eyes of a patient are easily damaged during extraction, and the safety risk of secondary operation is high.

And part of the artificial lens adopts a sheet-shaped or disc-shaped design, and diopter is fixed. The present embodiment provides the intraocular lens 100 (which changes the conventional concept that the lens must be implanted into the capsular bag of the lens, but rather, the lens is button-like and the capsular sac is eye-like fixed to the periphery of the lens. The artificial lens with the disc-shaped design is only supported by the capsular sac, the pressure on the zonules of the capsular sac is overlarge, the capsular sac-artificial lens complex is easy to dislocate, and serious posterior segment complications are generated. The integrated (sheet) design makes the replacement of the lens difficult to operate, and when the artificial lens is taken out, the capsular bag adhered to the lens is damaged, so that the subsequent implantation and fixation of the artificial lens are more difficult.

The intraocular lens 100 provided in this embodiment is divided into the mounting portion 10 and the optical portion 20, and the supporting loop 12 located at the bottom of the mounting portion body 11 can be connected to the groove-shaped edge of the lens, so that the edges of the anterior and posterior capsule membranes can be more effectively limited outside the optical portion 20, and the residual lens epithelial cells are prevented from migrating to the optical portion 20 in the visual axis region and further proliferating to cause the visual axis region to be turbid again. Namely, at least part of the supporting loop 12 is used for being connected with the groove-shaped edge of the lens to block the residual lens epithelial cells, and the supporting loop 12 can better prevent the residual lens epithelial cells from migrating to the mounting part body 11 and the optical part 20, thereby better ensuring the postoperative vision. Because the optical part 20 is detachably connected with the mounting part body 11, when the intraocular lens needs to be replaced, the optical part 20 only needs to be removed and replaced by a new optical part 20. Not only effectively reduce the operation difficulty, but also be difficult to cause the damage to other tissues of the eyes of the patient, and reduce the safety risk of the secondary operation.

Preferably, the support tab 12 includes a first support tab 121 and a second support tab 122, the first support tab 121 and the second support tab 122 are both connected to the side surface 112 of the mounting portion body 11, the first support tab 121 is located near the bottom surface 113 side of the mounting portion body 11, and the second support tab 122 is located near the top surface 114 side of the mounting portion body 11. That is to say, in this embodiment, the intraocular lens 100 is a double-layer supporting loop structure, the first supporting loop 121 can be connected to the sulcus-like edge of the lens, and the second supporting loop 122 can reach the sulcus position to fix the sulcus, so as to reduce the pressure on the capsular bag and better ensure the fixation effect.

Preferably, the side surfaces 112 are curved and concave inwardly to facilitate fixation of the anterior and posterior lens capsule.

Preferably, three first support tabs 121 and three second support tabs 122 are respectively arranged, three first support tabs 121 are distributed in an annular array, three second support tabs 122 are distributed in an annular array, and the edges of two adjacent second support tabs 122 are connected with each other. That is, the three first support tabs 121 are sequentially arranged along the circumferential direction of the mounting portion body 11, and the spacing distance between two adjacent first support tabs 121 is equal. Similarly, the three second support tabs 122 are sequentially arranged along the circumferential direction of the mounting portion body 11, and the spacing distance between two adjacent second support tabs 122 is equal. Therefore, the stress can be more balanced, and the reliability of the artificial lens 100 implanted into a human body can be better ensured. And the edges of two adjacent second support tabs 122 are connected with each other, so that the reliability of the second support tabs 122 can be better guaranteed.

Preferably, the first support tab 121 comprises a first inner tab 1211 and a first outer tab 1212 which are connected with each other, the first inner tab 1211 and the first outer tab 1212 are both arc-shaped, and the first inner tab 1211 and the first outer tab 1212 are spaced from each other at the middle part. Therefore, the stability of the connection between the first support loop 121 and the mounting part body 11 can be better ensured, and the difficulty of mounting the intraocular lens 100 can be better reduced. The second support loop 122 comprises a second inner loop 1221 and a second outer loop 1222 which are connected with each other, the second inner loop 1221 and the second outer loop 1222 are both arc-shaped, and the middle parts of the second inner loop 1221 and the second outer loop 1222 are spaced from each other. Therefore, the stability of the connection between the second support tab 122 and the mounting portion body 11 can be better ensured, and the difficulty of mounting the intraocular lens 100 can be better reduced.

Preferably, the cross section of installation portion body 11 is circular, just the diameter of installation portion body 11 is 6mm, first support tong "pan" 121 outer end extremely the distance at installation portion body 11 center is 4.5mm, second support tong "pan" 122 outer end extremely the distance at installation portion body 11 center is 6.5 mm. Namely, the distance from the outermost surface of the first support tab 121 to the center of the mounting part body 11 is 4.5mm, so that the diameter of the outer support ring a formed by three first support tabs 121 is 9 mm; the distance from the outermost surface of the second support tab 122 to the center of the mounting part body 11 is 6.5mm, so that the diameter of the outer support ring B formed by the three second support tabs 122 is 13 mm. The second support loop 122 can better reach the ciliary sulcus position, realize ciliary sulcus fixation and better reduce the pressure on the capsular bag; the first support loop 121 can be better connected with the groove-shaped edge of the lens, the edges of the front and the back capsule membranes can be more effectively limited outside the optical part 20, and residual lens epithelial cells are prevented from moving to the optical part 20 in the visual axis area and further proliferating to cause the visual axis area to be turbid again.

Preferably, the mounting groove 111 includes a groove body 1111 and a slot 1112 that are connected to each other, the groove body 1111 is located in the middle of the mounting portion body 11, and the slot 1112 is located at the edge of the groove body 1111. The optical portion 20 comprises an optical portion body 21 and a buckling portion 22, the buckling portion 22 is arranged at the edge of the optical portion body 21, the optical portion body 21 is mounted on the groove body 1111, and the buckling portion 22 is correspondingly buckled in the clamping groove 1112. Namely, the detachable connection between the optical part 20 and the mounting part body 11 is specifically clamping connection in a buckling mode, so that the mounting and dismounting difficulty of the optical part 20 is better reduced, and the stability of the optical part 20 after mounting is ensured.

Preferably, the slot body 1111 is concavely formed from the top surface 114 of the mounting portion body 11 toward the bottom surface 113, the slot 1112 includes a first portion 1113 and a second portion 1114 that are communicated with each other, the first portion 1113 is concavely formed from the top surface 114 of the mounting portion body 11 toward the bottom surface 113, the second portion 1114 is located at the bottom of the first portion 1113, and the second portion 1114 is arranged to extend along the circumferential direction. Therefore, when the optical part 20 is mounted, the buckling parts 22 can be aligned with the first part 1113, then the buckling parts 22 are pushed into the first part 1113, and after the buckling parts are pushed to the bottom, the optical part 20 is integrally rotated clockwise or counterclockwise, so that the buckling parts 22 are buckled into the second part 1114, and the fixation between the optical part 20 and the mounting part body 11 is realized. Not only is the installation simple, but also the fastening effect to the optical part 20 can be well ensured.

Preferably, the diameter of the slot body 1111 is 5.5mm, the recess depth of the slot body 1111 is 1mm, the slot length of the first portion 1113 is 0.5mm, the slot width of the first portion 1113 is 0.25mm, and the recess depth of the first portion 1113 is 0.5 mm. That is, the slot body 1111 is a circular groove and the first portion 1113 is a rectangular groove. The maximum diameter of the optical part body 21 is 5.5mm, and the length of the buckling part 22 is 0.5 mm. Thereby better ensuring the connection stability of the optical part 20 after installation.

Preferably, three of the locking grooves 1112 are arranged, the three locking grooves 1112 are distributed in an annular array, the three buckling parts 22 are arranged, and the three buckling parts 22 are distributed in an annular array, so that each buckling part 22 can be correspondingly buckled in one locking groove 1112, and the connection stability between the optical part 20 and the mounting part body 11 can be further ensured.

Preferably, the edge of the optical part body 21 is provided with a positioning hole 23, so that the optical part 20 can be mounted, dismounted and taken conveniently. Specifically, in this embodiment, the positioning holes 23 are formed in the fastening portions 22, and each fastening portion 22 is formed with the positioning hole 23, so that the optical portion 20 is further convenient to mount and dismount.

The present embodiment provides that the intraocular lens 100 may be made of any intraocular lens material that is currently available and does not need to be re-developed. The artificial lens 100 can fix the capsular sac edge outside the optical part 20 through the supporting loop 12, and the capsular opacification is effectively reduced. The artificial lens 100 is provided with the mounting part 10 and the detachable optical part 20, so that when a secondary operation is required, only the optical part 20 needs to be replaced, the operation difficulty is reduced, and the trauma of the operation to a patient is reduced. The optical part 20 is easy to assemble and disassemble, and 3 buckling parts 22 on the periphery of the optical part 20 can be fixed by rotating clockwise along the inner side wall of the first part 1113 and the second part 1114; when the lens needs to be replaced, the lens positioning hook is inserted into a positioning hole of 0.3 mm on the edge of the optical part 20, and the optical part 20 can be detached by rotating anticlockwise.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. An intraocular lens comprising a mounting portion and an optic portion;

2. The intraocular lens of claim 1 wherein the support tab comprises a first support tab and a second support tab, the first support tab and the second support tab each being attached to a side of the mounting body, and the first support tab being located adjacent a bottom surface side of the mounting body and the second support tab being located adjacent a top surface side of the mounting body.

3. The intraocular lens of claim 2 wherein there are three first support tabs and three second support tabs, three first support tabs are distributed in an annular array, three second support tabs are distributed in an annular array, and the edges of two adjacent second support tabs are connected to each other.

4. The intraocular lens of claim 3, wherein the first support tab comprises a first inner tab and a first outer tab that are interconnected, the first inner tab and the first outer tab each having a circular arc shape and the first inner tab being spaced apart from a central portion of the first outer tab, the second support tab comprises a second inner tab and a second outer tab that are interconnected, the second inner tab and the second outer tab each having a circular arc shape and the second inner tab being spaced apart from a central portion of the second outer tab.

5. The intraocular lens of claim 3 wherein the mounting body is circular in cross section and has a diameter of 6mm, the first support tab outer end is spaced 4.5mm from the mounting body center, and the second support tab outer end is spaced 6.5mm from the mounting body center.

6. The intraocular lens of claim 1 wherein the mounting groove comprises a groove body and a groove, the groove body is located in the middle of the mounting portion body, the groove is located at the edge of the groove body, the optical portion comprises an optical portion body and a latch portion, the latch portion is located at the edge of the optical portion body, the optical portion body is mounted to the groove body, and the latch portion is correspondingly latched in the groove.

7. The intraocular lens of claim 6 wherein the channel body is recessed from the top surface of the mounting portion body toward the bottom surface, the channel comprising a first portion and a second portion in communication with each other, the first portion being recessed from the top surface of the mounting portion body toward the bottom surface, the second portion being located at a bottom of the first portion, and the second portion extending circumferentially.

8. The intraocular lens of claim 7 wherein the groove body has a diameter of 5.5mm, the groove body has a depression depth of 1mm, the first portion has a groove length of 0.5mm, the first portion has a groove width of 0.25mm, the first portion has a depression depth of 0.5mm, the optical body has a maximum diameter of 5.5mm, and the clasp has a length of 0.5 mm.

9. The intraocular lens of claim 6 wherein there are three of said detents, three of said detents being in an annular array, and three of said detents being in an annular array.

10. The intraocular lens of any one of claims 1 to 9, wherein the optic has locating holes formed therein.