CN210170229U

CN210170229U - Sclera fixed artificial lens and its lock catch

Info

Publication number: CN210170229U
Application number: CN201920321872.6U
Authority: CN
Inventors: Shunhua Zhang; 张顺华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2020-03-24
Anticipated expiration: 2029-03-13

Abstract

The utility model relates to the technical field of medical equipment, specifically disclose a fixed type intraocular lens of sclera and hasp thereof, including optics lens portion, be equipped with on the optics lens portion or have fixed knot structure, be equipped with on the fixed knot structure or have be suitable for with the fixed hasp of eyeball sclera, the hasp be used for with the fixed part of eyeball sclera be located one side of keeping away from optics lens portion of fixed knot structure. The utility model discloses still relate to a hasp that is used for sclera fixed intraocular lens, including be used for with intraocular lens's fixed knot construct be connected fixed sticking department and be used for with the fixed part of eyeball sclera, sticking department and fixed part fixed connection or even as an organic whole. The utility model discloses can fix intraocular lens directly effectively on the sclera, the easy scheduling problem that ties, the operation degree of difficulty is big that exists after effectively solving suture and eyeball in the liquid mixture is applicable to the fixing of present various types of intraocular lens, and stable and have better living in the middle of, simple structure, application scope extensively.

Description

Sclera fixed artificial lens and its lock catch

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to sclera fixed intraocular lens and hasp thereof.

Background

The structure of a human eyeball is shown in fig. 1, and the eyeball consists of an eyeball wall and intraocular contents. The eyeball wall is divided into three layers, which are sequentially a fibrous membrane, a grape membrane and a retina O from outside to inside, the fibrous membrane consists of a cornea and a sclera M, the grape membrane consists of an iris E, a ciliary body K and a choroid N, the front part of the ciliary body K is raised into a ciliary crown, the inner surface of the ciliary body K is provided with more than 70 radially arranged bulges which are ciliary processes H, the iris E is the continuation of the ciliary body K to the front inner side and is an annular thin film, and the center of the iris E is provided with a circular pupil D. The eye content comprises aqueous humor, a crystalline lens A and a vitreous body G, wherein the three are transparent and have certain refractive indexes, and generally form a refractive medium of the eye together with a cornea C, and the crystalline lens A is a biconvex transparent tissue and is fixedly suspended behind an iris E and in front of the vitreous body G by a crystalline lens suspensory ligament J. The eye chamber is a cavity space between the crystalline lens A and the cornea C, contains aqueous humor, is divided into an anterior chamber B and a posterior chamber I by the iris E, and the optic disc L is a convergence of retinal nerve fibers and is positioned at the posterior pole of the eyeball. The eye appendage comprises an eyelid, a lacrimal apparatus, a conjunctiva, an extraocular muscle and an orbit, and the eyeball muscle has the functions of protecting, moving and supporting the eyeball, wherein the superior rectus muscle F1 can lead the pupil D to turn upwards, the inferior rectus muscle F2 can lead the pupil D to turn downwards and inwards, the internal rectus muscle can lead the pupil to turn inwards, and the external rectus muscle can lead the pupil to turn outwards.

The lens A is responsible for focusing light rays entering an eye on a retina O so as to form an image, the lens A is positioned in the capsular bag, the zonules J outside the capsular bag surround the lens A in 360 degrees and suspend the lens A behind a pupil D, and the fixing mode not only enables the central axis position of the lens A to be almost consistent with the visual axis, but also can adjust the adjusting capacity of the lens through the tension and the relaxation of the zonules J, so that the accurate focusing of the light rays is ensured. When lens a is diseased to affect vision, the patient may need to undergo a lens removal procedure. Normally, if the crystalline lens A is removed, an intraocular lens is implanted to replace the refractive function of the crystalline lens A, otherwise the patient would need to wear over 1000 degree presbyopic glasses to see the image. The intraoperative intraocular lens needs to be of the correct power, preferably in the capsular bag, to help reduce the risk of later lens deflection and to reduce the effects of the lens on other tissues in the eye, thereby reducing intraocular reactions.

Intraocular lenses are a clear, phaco-artificial substitute that provides near-natural normal vision, and are often surgically implanted in the eye to replace the removed, self-opacified lens, which is currently the most effective method for correcting ametropia in aphakic eyes. If the patient suffers from serious lesion of the zonule J or serious damage of the capsular bag, even some patients suffer from complete loss of the zonule J and the capsular bag, the intraocular lens cannot be placed at a normal position due to insufficient supporting force, and if the intraocular lens is implanted reluctantly, the intraocular lens is easy to shift and even falls behind the eyeball to influence the retina O, so that the risk is caused. In order to solve the problem, a sclera fixing intraocular lens (SF-IOL) can be adopted, a non-foldable lens is required to be used in a sclera fixing method, thread holes are formed in two supporting loops of the lens and used for threading and fixing, an incision is required to be made below a conjunctiva in an operation and used as a tunnel type inlet for implanting the lens, a suture is tied in the thread holes, the intraocular lens is slowly placed in the tunnel type inlet, the intraocular lens is placed in a ciliary sulcus, finally the suture is fixed at a sclera M position and is tied and fixed, the suture knot is finally turned into scleral tissues, or a conjunctival flap is used for covering the suture knot, irritation to the conjunctiva tissues is avoided, and finally the conjunctiva incision is closed, so that the operation is completed.

However, in the existing artificial lens implantation method, when threading, a thread needs to be threaded into an eyeball and mixed with liquid in the eyeball, so that the thread is easy to be wound and knotted, and the operation difficulty and the operation time are increased. In addition, when suture and intraocular lens are connected, can not control intraocular lens's direction, thereby the intraocular lens position easily takes place to deflect and leads to light can not focus on retina O, and the fracture phenomenon can appear in the postoperative to the suture simultaneously, causes certain risk.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiency that prior art exists, the utility model discloses the at first basic technical problem who solves provides a fixed type intraocular lens of sclera, and this intraocular lens can directly be fixed in on the sclera, and easy knot, the operation degree of difficulty that exist after effectively solving suture and eyeball liquid mixture is big, intraocular lens takes place to deflect scheduling problem easily.

The utility model discloses still provide a hasp for the fixed type intraocular lens of sclera, this hasp can effectively be used for the fixed of various types intraocular lens and sclera, facilitates for intraocular lens implantation operation, simple structure, application scope extensively.

In order to solve the above technical problem, the present invention provides a sclera-fixed intraocular lens, including an optical lens portion, the optical lens portion is provided with or has a fixing structure, the fixing structure is provided with or has a lock catch suitable for being fixed with the sclera of an eyeball, the lock catch is used for being located with the fixed part of the sclera of the eyeball one side of the optical lens portion is kept away from by the fixing structure.

Preferably, the lock catch further comprises a locking part for connecting and fixing with the fixing structure, and the locking part and the fixing part are fixedly connected or formed into a whole.

Preferably, the lock catch is detachably connected with the corresponding fixing structure; or the lock catch and the corresponding fixing structure are formed into an integral structure.

Preferably, the latch is detachably connected with the corresponding fixing structure, wherein the locking portion is a flexible locking portion capable of elastically deforming and is of a hollow structure, the size of the hollow structure is matched with that of the fixing structure, and the locking portion is sleeved and fixed on the outer peripheral surface of the fixing structure through the hollow structure.

Preferably, the latch is detachably connected to the corresponding fixing structure, wherein the locking portion is a U-shaped structure, a closed end of the U-shaped structure is connected to the fixing portion, and an open end of the U-shaped structure is detachably connected to the optical lens portion by a fixing pin engaged with the fixing structure.

Preferably, the fixing pin and the U-shaped structure are detachably connected, two ends of the fixing pin are elastic circular clamping heads, and clamping holes matched with the elastic circular clamping heads are formed in the inner surface, opposite to the U-shaped structure, of the U-shaped structure.

Preferably, the fixing pin comprises a plurality of cone structures connected in sequence, the large outer diameter end of the fixing pin is formed on the inner surface of one side of the opening end of the U-shaped structure, the small outer diameter end of the fixing pin is a clamping end, and a clamping hole matched with the small outer diameter end of the fixing pin is formed in the inner surface of the other side of the opening end of the U-shaped structure.

Preferably, the fixing part is an elastic fixing part and has a T-shaped structure or a ring-shaped structure.

Preferably, the T-shaped structure or the ring-shaped structure is parallel to or in the same plane as the mid-facet of the optical lens portion.

Preferably, the fixation structure is symmetrically arranged with respect to the optical lens portion.

A second aspect of the present invention provides a latch for a scleral fixing intraocular lens, comprising a locking portion for connecting a fixing structure of the intraocular lens to a fixing portion for fixing with the sclera of the eyeball, the locking portion being fixedly connected or integrated with the fixing portion.

Preferably, the locking part is a flexible locking part capable of elastic deformation, and has a hollow structure.

Preferably, the locking part is of a U-shaped structure, a closed end of the U-shaped structure is connected with the fixing part, and a fixing pin is arranged in an open end of the U-shaped structure.

Preferably, the locking part and the fixing part are formed as one body or detachably connected.

Through the technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a be equipped with the hasp on sclera fixed type intraocular lens's the fixed knot constructs, but the fixed part card of hasp directly goes into the scleral wall, fixes intraocular lens on the sclera, need not to use the suture, effectively avoids the mixture of suture and eyeball liquid, the risk that the suture fracture caused can not appear yet, and the hasp makes this intraocular lens fixed stable and have better in the middle of simultaneously.

2. The utility model discloses in be arranged in fixed type intraocular lens's of sclera hasp, can use with different grade type, unidimensional intraocular lens cooperation, have extensive application nature and adaptability, effectively solve various types of intraocular lens and implant the influence that seam or offset brought in the operation, also provide convenience for implanting the operation.

In addition, in the preferred embodiment of the present invention, the locking part and the fixing part of the latch are detachably connected, and the appropriate locking part and fixing part can be further selected for matching according to the type or size of the intraocular lens, and the design of the fixing pin is also suitable for matching connection with fixing structures of various sizes, which is more beneficial to connection and application of the latch and the intraocular lens.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The following drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the scope of the invention to the drawings and the embodiments described below. In the drawings:

FIG. 1 is a schematic view of a human eyeball;

FIG. 2 is a schematic diagram of a C-haptic scleral fixation intraocular lens in accordance with an embodiment of the present invention, wherein the fixation portion of the latch is a T-shaped structure;

FIG. 3 is a schematic diagram of another embodiment of a C-haptic scleral fixation intraocular lens of the present invention, wherein the fixation portion of the latch is of a loop configuration;

FIG. 4 is a schematic structural view of an embodiment of a multifocal scleral fixed intraocular lens of the present invention;

FIG. 5 is a schematic view of the locking device of the present invention used in the scleral fixing intraocular lens shown in FIG. 2;

FIG. 6 is a schematic diagram of an embodiment of a latch for a scleral holding intraocular lens of the present invention;

FIG. 7 is a schematic view of the structure of the latch of the present invention used in the multifocal scleral fixing intraocular lens shown in FIG. 4;

fig. 8 is a schematic diagram of an embodiment of a latch for a scleral holding intraocular lens shown in fig. 7.

Description of reference numerals:

anterior chamber of lens A and B

C cornea D pupil

E Iris F1 superior rectus muscle

F2 lower rectus G vitreous body

Posterior chamber of H-ciliary process I

J lens zonules K ciliary body

L optic disc M sclera

N choroidal O retina

1 optical lens part 2 fixing structure

3 locking part of lock catch 31

311 hollow structure 312U-shaped structure

313 fixed pin 314 elastic circular chuck

315 first connecting section 32 fixing part

321 second connecting segment

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are merely for purposes of illustration and explanation, and the scope of the present invention is not limited to the following embodiments.

In the description of the present invention, it should be understood that the terms "connected" and "connected" should be interpreted broadly, and for example, the connection may be a direct connection or an indirect connection through an intermediate medium. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of said features. The bisector of the optical lens portion in the present invention means a plane that is equidistant or approximately equidistant from the front and back surfaces of the optical lens portion, and that bisects or approximately bisects the optical lens portion from the middle of the optical lens portion.

The utility model discloses the sclera fixed intraocular lens that the first aspect provided, as shown in fig. 2-4, including optical lens portion 1, be equipped with on the optical lens portion 1 or have fixed knot structure 2, be equipped with on the fixed knot structure 2 or have be suitable for with the fixed hasp 3 of eyeball sclera, the fixed knot 32 that is used for with the eyeball sclera is fixed of hasp 3 is located one side of keeping away from optical lens portion 1 of fixed knot structure 2.

It should be noted that the middle sclera fixed intraocular lens of the utility model can be a monofocal intraocular lens, a multifocal intraocular lens or an electrodeless variable focal intraocular lens; the fixation structure 2 may be the haptics themselves (see fig. 2 and 3) provided or formed on the optical lens portion 1, fixation holes in the haptics, or fixation holes in the peripheral support portion of the optical lens portion 1 (see fig. 4). The sclera fixing type artificial lens adopting the basic technical scheme of the utility model adopts the following specific method when in use: placing the sclera fixed artificial lens into an implanter, implanting into an eye and placing in the anterior chamber; making an incision perpendicular to the limbus at a position 2.5-3.5mm behind the limbus by using a sclera puncture knife, and making sclera notches (only notches and not penetrating through the sclera M) perpendicular to the incision (parallel to the limbus) at the central position of the incision by using a 15-degree puncture knife; extending the foreign body forceps for retinal surgery into the eyeball from the incision, pulling one of the lock catches 3 on the intraocular lens out of the incision from the back of the iris, and clamping the fixing part 32 of the lock catch 3 in the slotted hole of the sclera M so as to fix one end of the intraocular lens on the sclera M; the same operation is performed at the positions corresponding to the other lock catches 3 on the intraocular lens, so that the other ends of the intraocular lens are fixed on the sclera M in sequence.

As a preferred embodiment of the middle sclera fixed intraocular lens of the present invention, the fixing structure 2 is symmetrically arranged relative to the optical lens part 1, which increases the structural stability of the intraocular lens when fixed after implantation.

Referring to fig. 2-7, fig. 5-7 are schematic structural views of the latch 3 of the present invention, and within the technical scope of the present invention, the latch 3 of the present invention has a locking portion 31 for connecting and fixing with the fixing structure 2 of the intraocular lens and a fixing portion 32 for fixing with the sclera M of the eyeball, and the locking portion 31 and the fixing portion 32 are integrally connected. The locking portion 31 and the fixing portion 32 may be fixedly connected, or detachably connected, or integrally formed, or directly connected, or indirectly connected through a connecting rod, or the locking portion 31 and/or the fixing portion 32 are provided with a connecting portion to achieve connection therebetween.

The utility model discloses an above-mentioned basic embodiment's hasp 3 preferably can form the fixing device who is used for intraocular lens to implant the operation to locking portion 31 is connected fixedly with intraocular lens's fixed knot structure 2, and fixed part 32 is used for intraocular lens to implant behind the eyeball fixed with sclera M, under this situation, the utility model discloses a hasp 3 will form the product that can market independent sale, can be directly with hasp 3 and different grade type, not unidimensional intraocular lens cooperation use in intraocular lens's implantation process can, have extensive application and adaptability, effectively solve the influence that various types of intraocular lens implanted operation suture brought, also provide convenience for implanting the operation.

In the scope of the above-mentioned lock catch 3 of the present invention, referring to fig. 5, as a preferred embodiment of the lock catch of the present invention, the locking portion 31 is a flexible locking portion capable of elastic deformation, and is a hollow structure 311, the size of the hollow structure 311 matches with the fixed structure 2, and the locking portion 31 is sleeved on the outer peripheral surface of the fixed structure 2 through the hollow structure 311. The locking part 31 can be specifically selected from polyether urethane urea, polytetramethylene glycol with molecular weight of 2000, methylene diphenyl diisocyanate or methylene diamine, the size of the hollow structure 311 is reasonably set according to the size range of the fixing structure 2, and the lock catch 3 can be matched with artificial lenses of various types or sizes by combining the elasticity of the locking part 31, so that the artificial lenses of different types have certain compatibility during surgery, are more conveniently connected and locked with the artificial lenses, and have wide application range and strong universality.

Referring to fig. 6 and 7, as another preferred embodiment of the latch of the present invention, the latch 3 is detachably connected to the corresponding fixing structure 2, wherein the locking portion 31 is a U-shaped structure 312, the closed end of the U-shaped structure 312 is connected to the fixing portion 32, the open end of the U-shaped structure 312 is detachably connected to the optical lens portion 1 through the engagement of the fixing pin 313 and the fixing structure 2, and the latch 3 can be fixedly connected to the fixing structure 2 through the fixing pin 313 by using the U-shaped structure 312 to be engaged with the fixing structure 2. Further, as shown in fig. 6, the fixing pin 313 is detachably connected to the U-shaped structure 312, two ends of the fixing pin 313 are elastic circular chucks 314, and the opposite inner surfaces of the U-shaped structure 312 are provided with clamping holes matched with the elastic circular chucks 314. When the fixing structure 2 is a fixing hole, a fixing pin 313 slightly larger than the aperture of the fixing hole is selected to penetrate through and be clamped with the fixing hole, and meanwhile, elastic circular clamping heads 314 at two ends are clamped into clamping holes on the U-shaped structure 312 for fixing; when the fixing structure 2 is a support loop, a suitable U-shaped structure 312 can be clamped on the support loop, and then the fixing pin 313 is selected to clamp the elastic circular clamps 314 at the two ends into the clamping holes on the U-shaped structure 312 for fixing, thereby closing the opening of the U-shaped structure 312.

As another preferred embodiment of the fixing pin of the present invention, as shown in fig. 7, the fixing pin 313 includes a plurality of cone structures connected in sequence, the large outer diameter end of the fixing pin 313 is formed on the inner surface of one side of the open end of the U-shaped structure 312, the small outer diameter end of the fixing pin 313 is a clamping end, and the inner surface of the other side of the open end of the U-shaped structure 312 is provided with a clamping hole matched with the small outer diameter end of the fixing pin 313. When the fixing structure 2 is a fixing hole, the small outer diameter end of the fixing pin 313 is inserted into the fixing hole, the position of the fixing pin 313 is adjusted to enable the fixing pin 313 to be clamped in the fixing hole by utilizing the difference of the outer diameters of the conical structures, then the small outer diameter end of the fixing pin 313 is clamped in the clamping hole to be fixed, when the fixing structure 2 is a support loop, the proper U-shaped structure 312 can be clamped on the support loop, and then the small outer diameter end of the fixing pin 313 is clamped in the clamping hole to be fixed.

As a preferred embodiment of the latch of the present invention, the fixing portion 32 is an elastic fixing portion and has a T-shaped structure or a ring-shaped structure, as shown in FIG. 2, the T-shaped structure is convenient for directly being snapped into the slot of the sclera M for fixation after the intraocular lens is implanted into the eyeball; referring to fig. 3 and 4, the ring structure not only makes the intraocular lens easier to be implanted into the eyeball without the edges and corners irritating the eyeball, but also cuts the fixing portion 32 from the middle to increase the length of the fixing portion 32 inserted into the scleral slot after the fixing portion 32 is inserted into the slot of the sclera M. Further, when the latch 3 is used in cooperation with an intraocular lens, the T-shaped structure or the annular structure of the fixing portion 32 is parallel to or in the same plane as the mid-split plane of the optical lens portion 1, so as to meet the requirement of fixing direction when the intraocular lens is fixed to the sclera M in an implantation operation.

As a preferred embodiment of the middle lock catch of the present invention, the locking portion 31 and the fixing portion 32 are detachably connected, so that the locking portion 31 and the fixing portion 32 with different sizes can be flexibly assembled into the lock catch 3, and the application range of the lock catch 3 is further expanded.

Specifically, in the embodiment shown in fig. 8, the locking portion 31 is detachably connected to the fixing portion 32 in such a manner that: the locking portion 31 is provided with a first connecting section 315, the fixing portion 32 is provided with a second connecting section 321, and the first connecting section 315 and the second connecting section 321 are in threaded connection, so that the locking portion 31 and the fixing portion 32 are firmly and stably connected, and matching and assembling between the locking portion 31 and the fixing portion 32 with different sizes are facilitated. Further, the length of the connecting handle formed by connecting the first connecting section 315 and the second connecting section 321 is 3-4mm, so as to meet the requirement of normal-size intraocular lens surgery.

When the latch 3 of the embodiment shown in fig. 8 is applied to the intraocular lens shown in fig. 4, in use, the locking part 31 matching with the fixing structure 2 of the intraocular lens is selected to be connected with the fixing part 32 with the appropriate size in a threaded manner to assemble the latch 3, then the locking part 31 of the latch 3 is clamped and fixed on the fixing structure 2 on the sclera fixing type intraocular lens, and then the intraocular lens is placed into the implanter to be implanted into the eye and placed in the anterior chamber B; making an incision perpendicular to the limbus at a position 2.5-3.5mm behind the limbus by using a sclera puncture knife, making a sclera notch perpendicular to the incision at the central position of the incision by using a 15-degree puncture knife, extending into an eyeball from the incision by using a retina surgery foreign body forceps, pulling out a fixing part 32 of one lock catch 3 on the intraocular lens from the incision from the back of an iris E, and clamping the fixing part 32 in a slotted hole of the sclera M so as to fix one end of the intraocular lens on the sclera M; the same operation is performed at the positions corresponding to the other lock catches 3 on the intraocular lens, so that the other ends of the intraocular lens are fixed on the sclera M in sequence.

As can be seen from the above description, the utility model has the advantages that the latch 3 is arranged on the fixing structure 2 of the sclera fixing type intraocular lens, the fixing part 32 of the latch 3 can be directly clamped into the scleral wall to fix the intraocular lens on the sclera M without using suture, thereby effectively avoiding the mixing of the suture and eyeball liquid, avoiding the risk caused by the fracture of the suture, and simultaneously, the latch 3 ensures that the intraocular lens is stably fixed and has better neutrality; the utility model discloses in be arranged in fixed type intraocular lens's of sclera hasp, can use with different grade type, unidimensional intraocular lens cooperation, have extensive application nature and adaptability, effectively solve various types of intraocular lens and implant the influence that seam or offset brought in the operation, also provide convenience for implanting the operation.

In addition, in the preferred embodiment of the present invention, the locking portion 31 and the fixing portion 32 of the latch 3 are detachably connected, and the locking portion 31 and the fixing portion 32 can be selected to be suitable for matching according to the type or size of the intraocular lens, and the design of the fixing pin 313 is also suitable for matching with fixing structures 2 of various sizes, which is more beneficial for the connection and application of the latch 3 and the intraocular lens.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. Intraocular lens of the scleral fixation type, comprising an optical lens portion (1), on which or having a fixation structure (2) is provided on the optical lens portion (1), characterized in that on or having a catch (3) adapted to be fixed with the sclera of the eyeball, on which side of the fixation structure (2) the fixation portion (32) of the catch (3) for fixation with the sclera of the eyeball is located, which is remote from the optical lens portion (1).

2. Scleral fixing intraocular lens according to claim 1, characterized in that the catch (3) further comprises a locking portion (31) for connection fixation with the fixation structure (2), the locking portion (31) and the fixation portion (32) being fixedly connected or formed in one piece.

3. Scleral fixing intraocular lens according to claim 2, characterized in that the catch (3) is detachably connected with the corresponding fixing structure (2); or

The lock catch (3) and the corresponding fixing structure (2) form an integral structure.

4. Scleral fixing intraocular lens according to claim 3, characterized in that the catch (3) is detachably connected to the corresponding fixing structure (2), wherein the locking portion (31) is an elastically deformable flexible locking portion and is a hollow structure (311), the size of the hollow structure (311) matches the fixing structure (2), and the locking portion (31) is fixed on the outer circumferential surface of the fixing structure (2) by the hollow structure (311) in a sleeved manner.

5. Scleral fixing intraocular lens according to claim 3, characterized in that the catch (3) is detachably connected with the corresponding fixing structure (2), wherein the locking portion (31) is a U-shaped structure (312), the closed end of the U-shaped structure (312) is connected with the fixing portion (32), and the open end of the U-shaped structure (312) is detachably connected to the optical lens portion (1) by the engagement of a fixation pin (313) with the fixing structure (2).

6. The scleral fixed intraocular lens of claim 5, wherein the fixing pin (313) is detachably connected to the U-shaped structure (312), the fixing pin (313) has elastic circular clamps (314) at both ends, and the opposite inner surfaces of the U-shaped structure (312) are provided with clamping holes matched with the elastic circular clamps (314).

7. The scleral fixing intraocular lens according to claim 5, wherein the fixing pin (313) comprises a plurality of cone structures connected in sequence, the large outer diameter end of the fixing pin (313) is formed on the inner surface of one side of the open end of the U-shaped structure (312), the small outer diameter end of the fixing pin (313) is a clamping end, and the inner surface of the other side of the open end of the U-shaped structure (312) is provided with a clamping hole matched with the small outer diameter end of the fixing pin (313).

8. Scleral fixing intraocular lens according to one of claims 1 to 7, characterized in that the fixing part (32) is an elastic fixing part and is of a T-shaped or ring-shaped configuration.

9. The scleral fixing intraocular lens according to claim 8, wherein the T-shaped structure or the ring-shaped structure is parallel or in the same plane as the mid-facet of the optical lens part (1).

10. Scleral fixing intraocular lens according to one of claims 1 to 7, characterized in that the fixing structure (2) is arranged symmetrically with respect to the optical lens part (1).

11. A lock catch for a sclera-fixation intraocular lens, characterized by comprising a locking part (31) for connecting and fixing with a fixation structure of the intraocular lens and a fixation part (32) for fixing with the sclera of an eyeball, wherein the locking part (31) and the fixation part (32) are fixedly connected or integrated.

12. Catch for a scleral fixing intraocular lens according to claim 11, characterized in that the fixing part (32) is an elastic fixing part and is of a T-shaped or ring-shaped construction.

13. A catch for a scleral fixing intraocular lens according to claim 11, characterized in that the locking part (31) is an elastically deformable flexible locking part and is of hollow construction (311).

14. A catch for a scleral fixing intraocular lens according to claim 11, characterized in that the locking portion (31) is a U-shaped structure (312), the closed end of the U-shaped structure (312) being connected to the fixing portion (32), the open end of the U-shaped structure (312) being provided with a fixing pin (313).

15. A clasp for a scleral fixing intraocular lens according to claim 14, characterized in that the fixing pin (313) is detachably connected to the U-shaped structure (312), the fixing pin (313) has elastic circular clamps (314) at both ends, and the U-shaped structure (312) has clamping holes on its opposite inner surface for mating with the elastic circular clamps (314).

16. The clasp for a scleral fixing type intraocular lens according to claim 14, wherein the fixing pin (313) comprises a plurality of cone structures connected in series, the large outer diameter end of the fixing pin (313) is formed on the inner surface of one side of the open end of the U-shaped structure (312), the small outer diameter end of the fixing pin (313) is a clamping end, and the inner surface of the other side of the open end of the U-shaped structure (312) is provided with a clamping hole matched with the small outer diameter end of the fixing pin (313).

17. A catch for a scleral fixing intraocular lens according to any one of claims 11 to 16, characterized in that the locking part (31) and the fixing part (32) are formed as one piece or detachably connected.