Intraocular lenses

Abstract

The present invention provides an artificial lens, which includes a mounting portion and an optical portion, wherein the mounting portion includes a mounting portion body and a support loop, wherein a mounting portion body is provided with a mounting groove, wherein the support loop is connected to the mounting portion body, wherein the support loop extends in a direction away from the center of the mounting portion body, and at least a portion of the support loop is located at the bottom of the mounting portion body; wherein the optical portion is mounted in the mounting groove, and wherein the optical portion is detachably connected to the mounting portion body. Compared with the prior art, the artificial lens provided by the present invention can better guarantee the patient's postoperative vision, and can facilitate the subsequent replacement of the optical portion.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an artificial lens. Background Art

[0002] With the rapid development of medical technology 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 into the eye to replace the natural lens in the eye that has become cloudy due to cataract disease, or to be used in refractive surgery to correct the vision of the human eye.

[0003] However, in the prior art, the opacity of the posterior capsule of the lens bag after implantation of an artificial lens is an inevitable complication, which can cause a further decrease in vision after surgery, and requires laser or reoperation to remove the opaque capsule to restore the transparency of the visual axis area and improve vision. These secondary treatments increase the risk of personal eye health of patients and the burden of medical resources.

[0004] Moreover, for pediatric cataract surgery, after the artificial lens is implanted, the refractive state of the operated eye will change as the child ages and the eye axis lengthens, resulting in a large refractive error, which requires glasses to correct or even replace the artificial lens to match the existing refractive power. Due to the special structure of children's eyes and the more obvious inflammatory response after surgery than adults, the peripheral part of the artificial lens implanted early often adheres to the lens capsule, iris, ciliary body and other intraocular tissues. Reoperation to remove the entire artificial lens will cause great damage and many complications. Summary of the invention

[0005] Aiming at the technical problems that artificial lenses in the prior art are prone to posterior capsule opacification after being implanted in the human body, affecting the patient's postoperative vision, and that it is difficult to replace the implanted artificial lenses in the prior art, the present invention provides an artificial lens that can better protect the patient's postoperative vision and facilitate subsequent secondary replacement.

[0006] An artificial lens comprises a mounting portion and an optical portion;

[0007] The mounting portion includes a mounting portion body and a support loop, the mounting portion body is provided with a mounting groove, the support loop is connected to the mounting portion body, the support loop extends in a direction away from the center of the mounting portion body, and at least a portion of the support loop is located at the bottom of the mounting portion body;

[0008] The optical part is installed in the installation groove, and the optical part is detachably connected to the installation part body.

[0009] Preferably, the support loop includes a first support loop and a second support loop, the first support loop and the second support loop are both connected to the side of the mounting portion body, and the first support loop is located close to the bottom surface of the mounting portion body, and the second support loop is located close to the top surface of the mounting portion body.

[0010] Preferably, three of the first support loops and three of the second support loops are respectively provided, 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 two adjacent second support loops are connected to each other.

[0011] Preferably, the first supporting loop includes a first inner loop and a first outer loop connected to each other, the first inner loop and the first outer loop are both arc-shaped, and the middle portions of the first inner loop and the first outer loop are spaced apart from each other, and the second supporting loop includes a second inner loop and a second outer loop connected to each other, the second inner loop and the second outer loop are both arc-shaped, and the middle portions of the second inner loop and the second outer loop are spaced apart from each other.

[0012] Preferably, the cross-section of the mounting part body is circular, and the diameter of the mounting part body is 6 mm, the distance from the outer end of the first support loop to the center of the mounting part body is 4.5 mm, and the distance from the outer end of the second support loop to the center of the mounting part body is 6.5 mm.

[0013] Preferably, the mounting groove includes a groove body and a card slot which are interconnected, the groove body is located in the middle of the mounting part body, the card slot is located at the edge of the groove body, the optical part includes an optical part body and a snap part, the snap part is arranged at the edge of the optical part body, the optical part body is installed in the groove body, and the snap part is correspondingly snapped in the card slot.

[0014] Preferably, the groove body is recessed from the top surface of the mounting portion body toward the bottom surface, and the slot includes a first part and a second part that are interconnected, the first part is recessed from the top surface of the mounting portion body toward the bottom surface, the second part is located at the bottom of the first part, and the second part is extended circumferentially.

[0015] Preferably, the diameter of the groove body is 5.5 mm, the recessed depth of the groove body is 1 mm, the groove length of the first part is 0.5 mm, the groove width of the first part is 0.25 mm, the recessed depth of the first part is 0.5 mm, the maximum diameter of the optical part body is 5.5 mm, and the length of the buckle part is 0.5 mm.

[0016] Preferably, three card slots are provided, and the three card slots are distributed in a ring array, and three buckle parts are provided, and the three buckle parts are distributed in a ring array.

[0017] Preferably, a positioning hole is provided on the optical part.

[0018] Compared with the prior art, the intraocular lens provided by the present invention includes a mounting portion and an optical portion, wherein the mounting portion includes a mounting portion body and a support loop, wherein a mounting groove is provided on the mounting portion body, wherein the support loop is connected to the mounting portion body, wherein the support loop extends in a direction away from the center of the mounting portion body, and at least part of the support loop is located at the bottom of the mounting portion body; wherein the optical portion is installed in the mounting groove, and the optical portion is detachably connected to the mounting portion body. By arranging the support loop at the bottom of the mounting portion body, the support loop can be connected to the groove-shaped edge of the lens, thereby more effectively limiting the anterior and posterior capsule edges outside the optical portion of the intraocular lens, preventing the residual lens epithelial cells from migrating to the optical portion of the lens in the visual axis area, and better protecting the patient's postoperative vision. Moreover, the optical portion is detachably connected to the mounting portion body, and when a secondary operation is required later, only the optical portion can be removed and replaced, making the removal simpler and also minimizing the damage to the patient as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the planar structure of an intraocular lens provided in an embodiment;

[0021] Figure 2 for Figure 1 A schematic diagram of the planar structure of the mounting portion and the optical portion shown;

[0022] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the mounting portion shown;

[0023] Figure 4 for Figure 3 Schematic diagram of the planar structure of the installation part shown. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] It should be noted that when an element is referred to as being "fixed on", "installed on" or "set on" another element, it can be directly on the other element or indirectly set 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 indirectly connected to the other element.

[0026] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0027] The present invention provides an artificial lens, which includes a mounting portion and an optical portion, wherein the mounting portion includes a mounting portion body and a support loop, wherein a mounting groove is provided on the mounting portion body, wherein the support loop is connected to the mounting portion body, wherein the support loop extends in a direction away from the center of the mounting plate body, and at least a portion of the support loop is located at the bottom of the mounting portion body; wherein the optical portion is mounted in the mounting groove, and the optical portion is detachably connected to the mounting portion body. The artificial lens can better guarantee the patient's postoperative vision and facilitate the subsequent replacement of the optical portion.

[0028] Please refer to Figures 1 to 4 . This embodiment provides an artificial lens 100, which is used to confine lens epithelial cells that are prone to migration and turbidity in a closed space, reduce their migration, and thus prevent turbidity in the visual axis area and reduce the occurrence of secondary cataracts; and the artificial lens 100 can replace the optical part of the artificial lens, that is, when an artificial lens replacement operation is required, it is not necessary to remove the entire artificial lens, and only the optical part of the artificial lens can be replaced. It is a new type of artificial lens.

[0029] The intraocular lens 100 includes a mounting portion 10 and an optical portion 20. The mounting portion 10 includes a mounting portion body 11 and a support loop 12. The mounting portion body 11 is provided with a mounting groove 111. The support loop 12 is connected to the mounting portion body 11. The support loop 12 extends away from the center of the mounting portion body 11, and at least part of the support loop 12 is located at the bottom of the mounting portion body 11. That is, the support loop 12 is connected to the mounting portion body 11 and extends radially outward. The optical portion 20 is installed in the mounting groove 111, and the optical portion 20 is detachably connected to the mounting portion body 11. Among them, the optical portion 20 can be a two-sided convex circular structure.

[0030] It is understandable that most of the artificial lens implantation surgeries in the prior art place the artificial lens in the capsule bag left after the lens is removed. Except for the annular tear of the anterior capsule when the lens is removed, the outer capsule bag is basically intact. The remaining lens epithelial cells can migrate along the posterior capsule, proliferate to form posterior capsule opacity, cause vision loss, and thus affect the patient's postoperative vision. This leads to the need to remove the opaque capsule through laser or reoperation to restore the transparency of the visual axis area and improve vision. These secondary treatments increase the patient's personal eye health risks and the burden on medical resources.

[0031] In addition, some special groups of people need to remove and replace the artificial lens for the second time after the artificial lens implantation surgery. For example, for pediatric cataract surgery, after the artificial lens is implanted, the refractive state of the operated eye will change as the child grows older and the eye axis becomes longer, resulting in a large refractive error, which requires glasses to be worn for correction or even replacement of the artificial lens to meet the existing refractive power. Due to the special structure of children's eyes and the more obvious inflammatory response after surgery than adults, the peripheral part of the artificial lens implanted early often adheres to the intraocular tissues such as the lens capsule, iris, and ciliary body. Reoperation to remove the entire artificial lens will cause great damage and many complications. In other words, after the artificial lens in the prior art is implanted in the human body, it is easy to cause posterior capsule opacity, resulting in a further decrease in vision and affecting the patient's postoperative vision. In addition, the artificial lens in the prior art is difficult to remove, and it is easy to cause damage to other tissues of the patient's eye during removal, and the safety risk of secondary surgery is high.

[0032] Some intraocular lenses adopt a sheet or disc-shaped design, and the refractive power is fixed. The intraocular lens 100 (it) provided in this embodiment changes the previous concept that intraocular lenses must be implanted in the lens capsule. Instead, the intraocular lens is like a button, and the capsule is fixed to the periphery of the intraocular lens like a buttonhole. The intraocular lens with a disc-shaped design is only supported by the capsule, which puts too much pressure on the suspension ligaments of the capsule, and can easily cause the capsule-intraocular lens complex to dislocate, resulting in serious complications of the posterior segment of the eye. The one-piece (sheet) design makes it difficult to replace the lens. When the entire intraocular lens is removed, the capsule that has adhered to the lens will be damaged, making the subsequent implantation and fixation of the intraocular lens more difficult.

[0033] The artificial lens 100 provided in this embodiment is divided into two parts, the mounting part 10 and the optical part 20. The support loop 12 located at the bottom of the mounting part body 11 can be connected to the grooved edge of the lens, which can more effectively limit the anterior and posterior capsule edges outside the optical part 20, preventing the residual lens epithelial cells from migrating to the optical part 20 in the visual axis area, and then proliferating to cause the visual axis area to become turbid again. That is, at least part of the support loop 12 is used to connect with the grooved edge of the lens to block the residual lens epithelial cells. The support 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 postoperative vision. Since the optical part 20 is detachably connected to the mounting part body 11, when it is necessary to remove and replace the artificial lens, it is only necessary to remove the optical part 20 and replace it with a new optical part 20. It not only effectively reduces the difficulty of the operation, but also is not likely to cause damage to other eye tissues of the patient, thus reducing the safety risk of secondary surgery.

[0034] Preferably, the support loop 12 includes a first support loop 121 and a second support loop 122, the first support loop 121 and the second support loop 122 are both connected to the side 112 of the mounting body 11, and the first support loop 121 is located on the side close to the bottom surface 113 of the mounting body 11, and the second support loop 122 is located on the side close to the top surface 114 of the mounting body 11. That is, in this embodiment, the intraocular lens 100 is a double-layer support loop structure, the first support loop 121 can be connected to the groove-shaped edge of the lens, and the second support loop 122 can reach the ciliary sulcus and achieve ciliary sulcus fixation, which reduces the pressure on the capsular bag and better ensures the fixation effect.

[0035] More preferably, the side surface 112 is an inwardly concave curved surface, so as to be more conducive to fixing the anterior and posterior capsules of the lens.

[0036] Preferably, three of the first support loops 121 and the second support loops 122 are respectively provided, the three first support loops 121 are distributed in a circular array, the three second support loops 122 are distributed in a circular array, and the edges of two adjacent second support loops 122 are connected to each other. That is, the three first support loops 121 are arranged in sequence along the circumference of the mounting portion body 11, and the interval distance between two adjacent first support loops 121 is equal. Similarly, the three second support loops 122 are arranged in sequence along the circumference of the mounting portion body 11, and the interval distance between two adjacent second support loops 122 is equal. Thereby, the force can be more balanced, and the reliability of the artificial lens 100 after implantation in the human body is better guaranteed. In addition, the edges of two adjacent second support loops 122 are connected to each other, which can also better guarantee the reliability of the second support loops 122.

[0037] Preferably, the first support loop 121 includes a first inner loop 1211 and a first outer loop 1212 connected to each other, the first inner loop 1211 and the first outer loop 1212 are both arc-shaped, and the middle parts of the first inner loop 1211 and the first outer loop 1212 are spaced from each other. Thus, the connection stability between the first support loop 121 and the mounting body 11 can be better guaranteed, and the installation difficulty of the artificial lens 100 can also be better reduced. The second support loop 122 includes a second inner loop 1221 and a second outer loop 1222 connected to 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. Thereby, the connection stability between the second support loop 122 and the mounting body 11 can be better guaranteed, and the difficulty of installing the intraocular lens 100 can be better reduced.

[0038] Preferably, the cross section of the mounting body 11 is circular, and the diameter of the mounting body 11 is 6 mm, the distance from the outer end of the first support loop 121 to the center of the mounting body 11 is 4.5 mm, and the distance from the outer end of the second support loop 122 to the center of the mounting body 11 is 6.5 mm. That is, the distance from the outermost surface of the first support loop 121 to the center of the mounting body 11 is 4.5 mm, so that the diameter of the outer support circle A formed by the three first support loops 121 is 9 mm; the distance from the outermost surface of the second support loop 122 to the center of the mounting body 11 is 6.5 mm, so that the diameter of the outer support circle B formed by the three second support loops 122 is 13 mm. The second support loop 122 can better reach the ciliary sulcus and fix the ciliary sulcus, thereby reducing the pressure on the capsular bag. The first support loop 121 can better connect with the grooved edge of the lens, and can more effectively restrict the anterior and posterior capsule edges outside the optical part 20, thereby preventing residual lens epithelial cells from migrating to the optical part 20 in the visual axis area, and then proliferating to cause the visual axis area to become cloudy again.

[0039] Preferably, the mounting groove 111 includes a groove body 1111 and a clamping groove 1112 which are interconnected, the groove body 1111 is located in the middle of the mounting body 11, and the clamping groove 1112 is located at the edge of the groove body 1111. The optical part 20 includes an optical body 21 and a buckle part 22, the buckle part 22 is arranged at the edge of the optical body 21, the optical body 21 is mounted on the groove body 1111, and the buckle part 22 is correspondingly buckled in the clamping groove 1112. That is, the detachable connection between the optical part 20 and the mounting body 11 is specifically snapped in a buckle manner, thereby better reducing the difficulty of installing and disassembling the optical part 20, and also ensuring the stability of the optical part 20 after installation.

[0040] Preferably, the slot body 1111 is formed by being recessed from the top surface 114 of the mounting body 11 toward the bottom surface 113, and the slot 1112 includes a first portion 1113 and a second portion 1114 that are connected to each other, wherein the first portion 1113 is recessed from the top surface 114 of the mounting body 11 toward the bottom surface 113, and the second portion 1114 is located at the bottom of the first portion 1113, and the second portion 1114 is extended along the circumferential direction. Thus, when installing the optical part 20, the buckle portion 22 can be aligned with the first portion 1113 first, and then the buckle portion 22 can be pushed into the first portion 1113. After being pushed into the bottom, the optical part 20 is rotated clockwise or counterclockwise as a whole, so that the buckle portion 22 is snapped into the second portion 1114, and the optical part 20 is fixed to the mounting body 11. Not only is the installation simple, but also the fastening effect of the optical part 20 can be well guaranteed.

[0041] Preferably, the diameter of the groove body 1111 is 5.5 mm, the recessed depth of the groove body 1111 is 1 mm, the groove length of the first part 1113 is 0.5 mm, the groove width of the first part 1113 is 0.25 mm, and the recessed depth of the first part 1113 is 0.5 mm. That is, the groove body 1111 is a circular groove, and the first part 1113 is a rectangular groove. The maximum diameter of the optical part body 21 is 5.5 mm, and the length of the buckle part 22 is 0.5 mm. Thereby, the connection stability of the optical part 20 after installation is better guaranteed.

[0042] Preferably, there are three card slots 1112, which are distributed in a ring array, and there are three buckle parts 22, which are distributed in a ring array, so that each buckle part 22 can be buckled in one of the card slots 1112, thereby further ensuring the connection stability between the optical part 20 and the mounting part body 11.

[0043] Preferably, a positioning hole 23 is provided at the edge of the optical part body 21, so as to facilitate the installation and removal of the optical part 20. Specifically, in this embodiment, the positioning hole 23 is provided at the buckle part 22, and each of the buckle parts 22 is provided with the positioning hole 23, so as to further facilitate the installation and removal of the optical part 20.

[0044] The intraocular lens 100 provided in this embodiment can be made of any existing intraocular lens material without the need for redevelopment. The intraocular lens 100 can fix the capsule edge outside the optical part 20 through the support loop 12, effectively reducing the occurrence of posterior capsule opacity. In addition, the intraocular lens 100 is configured as two parts, namely, the mounting part 10 and the detachable optical part 20. When a second operation is required, only the optical part 20 needs to be replaced, which reduces the difficulty of the operation and also reduces the trauma of the operation to the patient. In addition, the optical part 20 is easy to disassemble and assemble. The three buckle parts 22 around 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 replacement is required, the lens adjustment hook is inserted into the 0.3 mm positioning hole on the edge of the optical part 20 and the optical part 20 can be disassembled by rotating counterclockwise.

[0045] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. An artificial lens, characterized in that: It includes a mounting part and an optical part; The mounting portion includes a mounting portion body and a support loop, the mounting portion body is provided with a mounting groove, the support loop is connected to the mounting portion body, the support loop extends in a direction away from the center of the mounting portion body, and at least a portion of the support loop is located at the bottom of the mounting portion body; The optical part is installed in the installation groove, and the optical part is detachably connected to the installation part body; The support loop includes a first support loop and a second support loop, the first support loop and the second support loop are both connected to the side of the mounting body, and the first support loop is located close to the bottom surface of the mounting body, and the second support loop is located close to the top surface of the mounting body.

2. The intraocular lens according to claim 1, characterized in that: The first support loops and the second support loops are respectively provided in three numbers, 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 two adjacent second support loops are connected to each other.

3. The intraocular lens according to claim 2, characterized in that: The first support loop includes a first inner loop and a first outer loop connected to each other, the first inner loop and the first outer loop are both arc-shaped, and the middle parts of the first inner loop and the first outer loop are spaced apart from each other, and the second support loop includes a second inner loop and a second outer loop connected to each other, the second inner loop and the second outer loop are both arc-shaped, and the middle parts of the second inner loop and the second outer loop are spaced apart from each other.

4. The intraocular lens according to claim 2, characterized in that: The cross section of the mounting portion body is circular, and the diameter of the mounting portion body is 6 mm. The distance from the outer end of the first support loop to the center of the mounting portion body is 4.5 mm, and the distance from the outer end of the second support loop to the center of the mounting portion body is 6.5 mm.

5. The intraocular lens according to claim 1, characterized in that: The mounting groove includes a groove body and a card slot which are interconnected, the groove body is located in the middle of the mounting body, the card slot is located at the edge of the groove body, the optical part includes an optical part body and a card buckle part, the card buckle part is arranged at the edge of the optical part body, the optical part body is installed in the groove body, and the card buckle part is correspondingly carded in the card slot.

6. The intraocular lens according to claim 5, characterized in that: The groove body is recessed from the top surface of the mounting body toward the bottom surface, and the slot includes a first part and a second part that are interconnected. The first part is recessed from the top surface of the mounting body toward the bottom surface, and the second part is located at the bottom of the first part, and the second part is extended along the circumferential direction.

7. The intraocular lens according to claim 6, characterized in that: The diameter of the groove body is 5.5mm, the recessed depth of the groove body is 1mm, the groove length of the first part is 0.5mm, the groove width of the first part is 0.25mm, the recessed depth of the first part is 0.5mm, the maximum diameter of the optical part body is 5.5mm, and the length of the buckle part is 0.5mm.

8. The intraocular lens according to claim 5, characterized in that: There are three card slots, which are distributed in a ring array; there are three buckle parts, which are distributed in a ring array.

9. The intraocular lens according to any one of claims 1 to 8, characterized in that: The optical part is provided with a positioning hole.

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