CN210494319U - Double-optical-department artificial crystal kit - Google Patents
Double-optical-department artificial crystal kit Download PDFInfo
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- CN210494319U CN210494319U CN201920924254.0U CN201920924254U CN210494319U CN 210494319 U CN210494319 U CN 210494319U CN 201920924254 U CN201920924254 U CN 201920924254U CN 210494319 U CN210494319 U CN 210494319U
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Abstract
The utility model provides a two optical department intraocular lens external members, include: a main crystal and an additional crystal; the main crystal includes: the positioning part is arranged on the first optical part and/or the haptics; the additional crystal includes: the first optical part is connected with the first optical part, and the second optical part is connected with the first optical part. The utility model provides a two optical department's intraocular lens external members adopt the supporting connection structure of dismantling of main crystal and additional crystal, carry out effectual refraction correction.
Description
Technical Field
The utility model relates to an intraocular lens technical field especially relates to a two optical department intraocular lens external members.
Background
At present, cataract is the blindness eye disease with the highest incidence rate worldwide, and the main means for treating cataract is to carry out phacoemulsification and intraocular lens implantation surgery. This procedure typically entails removing a portion of the central approximately 5.5mm of the anterior lens capsule (e.g., manual tear-off or femtosecond laser assisted resection to prepare a circular anterior capsule opening of 5.5mm diameter), phacoemulsification to completely remove the nucleus mass of the opacified lens and to aspirate the lens cortex while leaving the posterior capsule intact, and then implanting an intraocular lens into the lens capsule.
Intraocular lens structures of conventional design include: an optic (circular of about 6 mm) acting as a dioptric lens in the center and haptics supporting the periphery, usually two or more in number (for example, two haptics are mostly bilaterally symmetrical in design and about 12mm in total length, C-shaped, L-shaped or flat plate type), and after the intraocular lens is implanted in the capsular bag, the haptics having a certain elasticity support the peripheral part of the capsular bag, thereby ensuring centering and stabilization of the optic in the capsular bag.
However, there are a significant number of problems with residual partial refractive errors (e.g., myopia, hyperopia, astigmatism) or near vision difficulties in patients following cataract extraction in combination with intraocular lens implantation, for reasons including: the measurement and calculation error of the degree of the artificial lens before the operation, the astigmatism caused by the operation, the design of the implanted artificial lens without correction astigmatism, the design without multi-focus and the like. Existing solutions include: (1) the correction is carried out by wearing frame glasses, but the frame glasses bring inconvenience to the life of a patient; (2) the replacement of the artificial lens has the problems of complicated operation and serious eye injury, and is difficult to accept by patients; (3) the cornea is cut through the excimer laser surgery for correction, but the surgery is irreversible, and the refractive state of some patients exceeds the laser correction range; (4) another conventional intraocular lens is implanted into the ciliary sulcus for correction (for example, piggyback intraocular lens implantation), but the conventional intraocular lenses are outward extended haptics having a total length of about 12mm except for an optical portion having a size of about 6mm at the center, so that iritis and complications of ocular hypertension are likely to occur due to stimulation of the iris by the haptics, and there is a problem that the position of the lens in the ciliary sulcus is difficult to be stably and centrally positioned. In addition, if discomfort symptoms such as glare occur to a patient after a part of multifocal intraocular lenses are implanted, the intraocular lenses need to be taken out and replaced with new ones, which easily causes the problems of serious eye damage and excessive economic loss.
SUMMERY OF THE UTILITY MODEL
The utility model provides a double-optical department artificial crystal external member, which adopts the detachable matching connection structure of a main crystal and an additional crystal to carry out effective refractive correction.
The utility model provides a two optical department intraocular lens external members, include: a main crystal and an additional crystal; the main crystal includes: the positioning part is arranged on the first optical part and/or the haptics; the additional crystal includes: the first optical part is connected with the first optical part, and the second optical part is connected with the first optical part.
Optionally, the positioning part is a positioning hole, and a groove is arranged on the inner surface of the positioning hole; the connecting part is a positioning column, and a boss corresponding to the groove is arranged on the outer surface of the positioning column; the section of the groove is arc-shaped, and the arc-shaped groove is an unsealed fan-shaped ring or a sealed ring.
Optionally, the positioning part is a hanging piece which is arranged on the loop part and forms an acute angle with the loop part, one end of the hanging piece is connected with the loop part and is close to the first optical part, and the other end of the hanging piece is far away from the first optical part; the connecting part is a lasso which is arranged on the periphery of the outer edge of the second optical part and connected with the second optical part, the lasso and the second optical part form a hollow structure, and the hanging pieces penetrate through the hollow structure to enable the connecting part to be detachably connected with the positioning part.
Optionally, the hanging piece is of a triangular structure, one side of the triangle is connected with the haptics and close to the first optical part, and an angular point opposite to the side connected with the haptics is far away from the first optical part.
Optionally, the positioning portion is a bridge bayonet provided on the haptic; the connecting part is a bolt which is arranged on the periphery of the outer edge of the second optical part and connected with the second optical part, and the bolt penetrates through the bridge-type bayonet so that the connecting part is detachably connected with the positioning part.
Optionally, the positioning part is a ferrule arranged on the loop part, and a positioning convex part facing to the center of the first optical part is arranged in the ferrule; the connecting part is a clamping core which is arranged on the periphery of the outer edge of the second optical part and connected with the second optical part, and the clamping core is provided with a positioning groove corresponding to the positioning convex part.
Optionally, the card core is of a plate structure, and a through cavity is formed in the middle of the card core.
Optionally, the ferrule is an L-shaped ferrule with an opening facing the center of the first optical portion, and the positioning boss is arranged at the bottom of the L-shaped ferrule; or the clamping sleeve is a pocket body with an opening facing to the center of the first optical part, and the positioning convex part is arranged at the bottom of the pocket body.
Optionally, the additional crystal is provided with a hole in the center, and the diameter of the hole is 0.2-0.5 mm.
The utility model has the advantages that: the double-optical-department intraocular lens kit adopts the detachable separation structure of the main lens and the additional lens, and realizes that the refractive error of the intraocular lens after the correction operation can be achieved only by replacing the additional lens without replacing the whole intraocular lens. In addition, the main lens and the replaceable additional lens can be implanted in sequence according to the requirement of staging treatment, so that repeated operation becomes safer, simpler and more convenient.
Drawings
FIG. 1 is an isometric view of the mating of a primary crystal and an additional crystal according to one embodiment.
FIG. 2 is a front view of the main crystal and the additional crystal in cooperation with each other in the first embodiment.
FIG. 3 is an isometric view of the mating of the primary and additional crystals of example two.
FIG. 4 is an isometric view of the mating of the master crystal and the additional crystal of example three.
FIG. 5 is an isometric view of the mating of the master crystal and the additional crystal of the fourth embodiment.
Fig. 6 is a partially enlarged view of fig. 5.
Detailed Description
The dual-optic intraocular lens assembly of an embodiment of the present invention is described in detail below with reference to fig. 1 to 6.
An embodiment of the utility model provides a two optical department intraocular lens external members, include: a main crystal (1) and an additional crystal (2).
The main crystal (1) comprises: the first optic (10), a positioning part (12) and a loop part (13), the loop part (13) is arranged on the periphery of the outer edge of the first optic (10) and connected with the first optic (10), and the positioning part (12) is arranged on the first optic (10) and/or the loop part (13).
Preferably, the number of the haptics (13) is two or more, and may be a C-shape, an L-shape or a plate shape.
By way of example, the number of haptics (13) is two, and the haptics are symmetrically arranged on both sides of the first optical portion (10) in the radial direction of the first optical portion (10) and are used for supporting the periphery of the capsular bag, so that the primary crystal (1) is ensured to be centered and stabilized in the capsular bag.
Preferably, the number of the positioning portions (12) is two or more.
In one embodiment, when the positioning portions (12) are provided on the haptics (13), the number of the positioning portions (12) is the same as the number of the haptics (13). As an example, one positioning portion (12) is provided on each haptic portion (13).
In another embodiment, the positioning portions (12) are provided at the junctions of the first optic (10) and haptics (13), such that the positioning portions (12) are provided on the first optic (10) and haptics (13).
The additional crystal (2) comprises: a second optical portion (20) corresponding to the first optical portion (10), and a connecting portion (22) corresponding to the positioning portion (12), wherein the connecting portion (22) is connected to the second optical portion (20).
Specifically, the connecting part (22) is detachably connected with the positioning part (12), so that the main crystal (1) and the accessory crystal (2) are positioned and fixed, the accessory crystal (2) is positioned in front of the main crystal (1), and effective refractive correction is performed.
It is understood that the positions of the positioning portion (12) and the connecting portion (22) correspond to each other.
Preferably, the number of the positioning portions (12) is the same as the number of the connecting portions (22). That is, the positioning portions (12) and the connecting portions (22) correspond one to one.
Preferably, the size of the second optic (20) is greater than or equal to the size of the first optic (10).
It can be understood that the first optical part (10) and the second optical part (20) have different diopters, and the diopter of the first optical part (10) is larger than that of the second optical part (20). That is, the first optical portion (10) has a large diopter, and mainly functions as a refractive correction (which may be a simple sphere or an astigmatism correction type or a multifocal type); the second optical portion (20) has a low power and has the main function of correcting the effect of residual sphere (myopia or hyperopia) or cylinder (astigmatism) and/or of providing an additional focus.
As an example, the additional crystal (2) is an ultra-thin sheet lens.
For example, when the first optical part (10) and the second optical part (20) are the same in size, the first optical part (10) and the second optical part (20) are both circular and have the same diameter.
It is understood that when the positioning portion (12) is provided on the first optical portion (10), the connecting portion (22) is provided on the second optical portion (20). When the positioning portions (12) are provided on the haptics (13), the connecting portions (22) are provided on the outer circumference of the second optical portion (20) and connected to the second optical portion (20).
In addition, the additional crystal (2) of the embodiment of the present invention has a hole (24) in the center for ensuring the flow of aqueous humor between the main crystal (1) and the additional crystal (2) and preventing the accumulation of interlaminar proteins and the occurrence of turbidity.
As an example, the holes (24) are through holes with the diameter of 0.2-0.5 mm.
The following describes in detail the "dual optic intraocular lens kit" in connection with various embodiments.
The first embodiment.
As shown in fig. 1 and 2, embodiments of the present invention provide a dual-optic intraocular lens kit comprising: a main crystal (1) and an additional crystal (2). The main crystal (1) comprises: the positioning device comprises a first optical part (10), a positioning part (12) and a loop part (13), wherein the loop part (13) is arranged on the periphery of the outer edge of the first optical part (10) and is connected with the first optical part (10). The additional crystal (2) comprises: a second optical portion (20) corresponding to the first optical portion (10), and a connecting portion (22) corresponding to the positioning portion (12), wherein the connecting portion (22) is connected to the second optical portion (20).
The number of the loop parts (13) is two, and the loop parts are symmetrically arranged on two sides of the first optical part (10) along the radial direction of the first optical part (10).
The positioning parts (12) are positioning holes (120), the number of the positioning holes is two, and the positioning holes are respectively arranged on the first optical part (10) and close to the connection part of the first optical part (10) and the haptic (13).
By way of example, the positioning hole (120) can be a cylindrical hole, a rectangular or irregular hole, and the like.
Preferably, the inner surface (e.g., inner wall circumference) of each locating hole (120) is provided with a groove (122). By way of example, the cross section of the groove (122) is arc-shaped, and the arc-shaped groove is an unsealed fan-shaped ring or a closed ring.
The connecting parts (22) are positioning columns (220), and the number of the positioning columns is two. It can be understood that the shape and position of the positioning post (220) correspond to the shape and position of the positioning hole (120).
Preferably, a boss (222) corresponding to the groove (122) is provided on an outer surface (e.g., outer circumference) of each positioning column (220). For example, the boss (222) is arcuate.
The positioning column (220) in the embodiment is inserted into the positioning hole (120), and the boss (222) is matched and connected with the groove (122) to realize the detachable matching and connection between the main crystal (1) and the additional crystal (2), so that effective refractive correction is carried out.
Example two.
Referring to fig. 3 in combination with fig. 1, embodiments of the present invention provide a dual-optic intraocular lens kit comprising: a main crystal (1) and an additional crystal (2).
The main crystal (1) comprises: the positioning device comprises a first optical part (10), a positioning part (12) and a loop part (13), wherein the loop part (13) is arranged on the periphery of the outer edge of the first optical part (10) and is connected with the first optical part (10).
The number of the loop parts (13) is two, and the loop parts are symmetrically arranged on two sides of the first optical part (10) along the radial direction of the first optical part (10).
The positioning parts (12) are two hanging pieces (124), the hanging pieces (124) are respectively arranged on the loop parts (13) and form an acute angle with the loop parts (13), and it can be understood that each loop part (13) is provided with one hanging piece (124). Specifically, one end of the hanging piece (124) is connected with the loop part (13) and close to the first optical part (10), and the other end of the hanging piece (124) is far away from the first optical part (10).
Preferably, the hanging piece (124) is triangular, rectangular, trapezoidal, etc.
As an example, the hanging piece (124) is a triangle structure, one side of the triangle is connected with the haptic part (13) and close to the first optical part (10), and an angular point opposite to the side connected with the haptic part (13) is far away from the first optical part (10).
The connecting parts (22) are lassos (224), and the number of the connecting parts is two. The noose (224) is arranged on the periphery of the outer edge of the second optical part (20) and connected with the second optical part (20), the noose (224) and the second optical part (20) form a hollow structure, the position of the noose (224) corresponds to the position of the hanging piece (124), and the hanging piece (124) penetrates through the hollow structure to detachably connect the connecting part (22) and the positioning part (12).
By way of example, the shape of the noose (224) is an ear contour, an arc, a semi-circle, or the like.
The hanging piece (124) in the embodiment is inserted into the lasso (224), so that the lasso (224) is sleeved on the hanging piece (124), and the detachable matching connection between the main crystal (1) and the additional crystal (2) is realized, thereby performing effective refraction correction.
Example three.
Referring to fig. 4 in combination with fig. 1, embodiments of the present invention provide a dual-optic intraocular lens kit comprising: a main crystal (1) and an additional crystal (2).
The main crystal (1) comprises: the positioning device comprises a first optical part (10), a positioning part (12) and a loop part (13), wherein the loop part (13) is arranged on the periphery of the outer edge of the first optical part (10) and is connected with the first optical part (10).
The number of the loop parts (13) is two, and the loop parts are symmetrically arranged on two sides of the first optical part (10) along the radial direction of the first optical part (10).
The positioning parts (12) are bridge-shaped bayonets (126), the number of the bridge-shaped bayonets is two, and the bridge-shaped bayonets are respectively arranged on the loop parts (13). It will be appreciated that a bridge bayonet (126) is provided on each haptic (13), the bridge bayonet (126) being located adjacent the junction of the first optic (10) and the haptic (13).
The connecting parts (22) are two locking tongues (226), the locking tongues (226) are arranged on the periphery of the outer edge of the second optical part (20) and connected with the second optical part (20), and the shape and the position of the bridge-type bayonet (126) correspond to the shape and the position of the locking tongues (226).
The lock tongue (226) in the embodiment is inserted into the bridge type bayonet (126), and the lock tongue (226) penetrates through the bridge type bayonet (126) to realize the detachable matching connection between the main crystal (1) and the additional crystal (2), so that effective refractive correction is carried out.
Example four.
As shown in fig. 5 and 6, embodiments of the present invention provide a dual-optic intraocular lens kit comprising: a main crystal (1) and an additional crystal (2).
The main crystal (1) comprises: the positioning device comprises a first optical part (10), a positioning part (12) and a loop part (13), wherein the loop part (13) is arranged on the periphery of the outer edge of the first optical part (10) and is connected with the first optical part (10).
The number of the loop parts (13) is two, and the loop parts are symmetrically arranged on two sides of the first optical part (10) along the radial direction of the first optical part (10).
The positioning parts (12) are L-shaped clamping sleeves (128) with openings facing the center of the first optical part (10), the number of the clamping sleeves is two, and the two clamping sleeves are respectively arranged on the haptics (13) and close to the junctions of the first optical part (10) and the haptics (13). It will be appreciated that an L-shaped ferrule (128) is provided on each haptic (13).
Preferably, a positioning convex part (129) facing to the center of the first optical part (10) is arranged in the L-shaped clamping sleeve (128), namely, the positioning convex part (129) is arranged at the bottom of the L-shaped clamping sleeve (128), so that the positioning convex part (129) points to the axial center of the first optical part (10).
The connecting parts (22) are two clamping cores (228), and the clamping cores (228) are arranged on the periphery of the outer edge of the second optical part and connected with the second optical part. It is understood that the location of the core (228) corresponds to the location of the L-shaped ferrule (128).
Preferably, the clamping core (228) is provided with a positioning groove (229) corresponding to the positioning bulge part (129). The positioning groove (229) is arranged at one end of the card core (228) far away from the center of the second optical part (20).
Preferably, the card core (228) is of a plate type structure, and the middle part of the card core (228) is a through cavity (230). The clamping core (228) has certain elasticity through the cavity (230), so that the installation and fixation are convenient, and the deformation of the second optical part (20) in the use process is effectively reduced.
As an example, the shape of the cavity (230) may be rectangular, semicircular, or the like.
The card core (228) in the embodiment is inserted into the L-shaped card sleeve (128), and the detachable matching connection between the main crystal (1) and the additional crystal (2) is realized through the matching connection of the positioning convex part (129) and the positioning groove (229), so that the effective refraction correction is carried out. Particularly, the clamping core (228) is inserted into the L-shaped clamping sleeve (128), so that the back and forth movement of the main crystal (1) and the additional crystal (2) can be effectively prevented; the matching connection of the positioning convex part (129) and the positioning groove (229) can effectively prevent the up-and-down movement of the main crystal (1) and the additional crystal (2). In addition, the clamping process of the embodiment has micro deformation, so that the clamping strength can be effectively ensured.
In another embodiment (not shown), the positioning part is a ferrule formed by a pocket opening toward the center of the first optical part, and the positioning convex part is arranged at the bottom of the pocket and faces toward the center of the first optical part (10). Through the insertion of the card core (228) into the pocket groove and the matching connection of the positioning convex part (129) and the positioning groove (229), the detachable matching connection between the main crystal (1) and the additional crystal (2) is realized, thereby performing effective refractive correction.
The application of the dual-optic intraocular lens package of embodiments of the present invention is described below.
The main crystal (1) and the additional crystal (2) in the embodiment of the utility model are implanted synchronously or in stages.
As an example, the staging implant is: surgically implanting the primary lens (1) when the patient is routinely subjected to cataract surgery in combination with intraocular lens implantation; after operation, if a residual spherical lens or cylindrical lens exists, the additional crystal (2) with proper category and degree is selected for secondary implantation, and the additional crystal is detachably connected with the main crystal (1) in a matched manner, so that the function of tracking and correcting is achieved. The contemporaneous implantation is: when the patient has near and intermediate vision requirements, an additional lens (2) with a diffractive ring or refractive zone is selected to provide an additional focal point, said additional lens (2) being implanted contemporaneously with said main lens (1).
As another example, the contemporaneous implant is: when the patient has near and intermediate vision requirements, an additional lens (2) with a diffractive ring or refractive region is selected to provide an additional focal point, said additional lens (2) being implanted in the patient's eye contemporaneously with said main lens (1).
In addition, for the patient who can not tolerate the symptoms such as severe glare after operation, the additional crystal (2) can be taken out at any time, so that the eyes of the patient are changed into a common monofocal crystal state, and the glare caused by diffraction or refraction effect of the additional crystal is relieved.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A dual optic intraocular lens kit comprising: a main crystal (1) and an additional crystal (2);
the main crystal (1) comprises: a first optical part (10), a positioning part (12) and a loop part (13), wherein the loop part (13) is arranged on the periphery of the outer edge of the first optical part (10) and connected with the first optical part (10), and the positioning part (12) is arranged on the first optical part (10) and/or the loop part (13);
the additional crystal (2) comprises: a second optical part (20) corresponding to the first optical part (10) and a connecting part (22) corresponding to the positioning part (12), wherein the connecting part (22) is connected with the second optical part (20), and the connecting part (22) is detachably connected with the positioning part (12).
2. A dual optic intraocular lens kit according to claim 1 wherein the locating portion (12) is a locating hole (120), the locating hole (120) having a recess (122) on an inner surface thereof;
the connecting part (22) is a positioning column (220), and a boss (222) corresponding to the groove (122) is arranged on the outer surface of the positioning column (220);
the section of the groove (122) is arc-shaped, and the arc-shaped groove is an unsealed fan-shaped ring or a sealed ring.
3. A dual-optic intraocular lens package according to claim 1, wherein the positioning portion (12) is a hanging piece (124) provided on the haptic portion (13) and forming an acute angle with the haptic portion (13), one end of the hanging piece (124) being connected to the haptic portion (13) and being close to the first optical portion (10), the other end of the hanging piece (124) being remote from the first optical portion (10);
the connecting part (22) is a noose (224) which is arranged on the periphery of the outer edge of the second optical part (20) and connected with the second optical part (20), the noose (224) and the second optical part (20) form a hollow structure, and the hanging piece (124) penetrates through the hollow structure to detachably connect the connecting part (22) and the positioning part (12).
4. A dual optic intraocular lens package according to claim 3, wherein the suspension tabs (124) are of triangular configuration with one side of the triangle being connected to the haptic (13) and adjacent the first optic (10) and the corner point opposite the side connected to the haptic (13) being remote from the first optic (10).
5. A dual optic intraocular lens assembly according to claim 1 wherein the positioning portion (12) is a bridge bayonet (126) provided on the haptic portion (13);
the connecting part (22) is a locking tongue (226) which is arranged on the periphery of the outer edge of the second optical part (20) and connected with the second optical part (20), and the locking tongue (226) penetrates through the bridge-type bayonet (126) to enable the connecting part (22) to be detachably connected with the positioning part (12).
6. A dual optic intraocular lens package according to claim 1 wherein the positioning portion (12) is a ferrule (128) provided on the haptic portion (13), a positioning boss (129) being provided in the ferrule (128) toward the center of the first optic portion (10);
the connecting part (22) is a clamping core (228) which is arranged on the periphery of the outer edge of the second optical part (20) and connected with the second optical part (20), and a positioning groove (229) corresponding to the positioning convex part (129) is arranged on the clamping core (228).
7. A dual optic intraocular lens kit according to claim 6 wherein the core (228) is of plate construction and the core (228) has a central through cavity (230).
8. A dual optic intraocular lens kit according to claim 6 wherein the ferrule (128) is an L-shaped ferrule opening towards the centre of the first optic (10), the locating boss (129) being provided at the base of the L-shaped ferrule;
or the clamping sleeve (128) is a pocket body with an opening facing to the center of the first optical part (10), and the positioning convex part (129) is arranged at the bottom of the pocket body.
9. A dual optic intraocular lens kit as claimed in any one of claims 1 to 8, characterised in that the additional lens (2) is provided with an aperture (24) in the centre thereof, the aperture (24) having a diameter of 0.2 to 0.5 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920924254.0U CN210494319U (en) | 2019-06-19 | 2019-06-19 | Double-optical-department artificial crystal kit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920924254.0U CN210494319U (en) | 2019-06-19 | 2019-06-19 | Double-optical-department artificial crystal kit |
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| CN210494319U true CN210494319U (en) | 2020-05-12 |
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| CN201920924254.0U Active CN210494319U (en) | 2019-06-19 | 2019-06-19 | Double-optical-department artificial crystal kit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151358A (en) * | 2019-06-19 | 2019-08-23 | 沈阳眼产业技术研究院有限公司 | A kind of double optics portion artificial lens external member and its application |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110151358A (en) * | 2019-06-19 | 2019-08-23 | 沈阳眼产业技术研究院有限公司 | A kind of double optics portion artificial lens external member and its application |
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Effective date of registration: 20231024 Address after: 110163 Surabaya street, Hunnan District, Shenyang, Liaoning 66 Patentee after: SHENYANG BAIAO MEDICAL DEVICES CO.,LTD. Address before: 110163 Surabaya street, Hunnan District, Shenyang, Liaoning 66 Patentee before: SHENYANG EYE INDUSTRY TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
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