CN111481322A - Adjustable bag inner ring - Google Patents
Adjustable bag inner ring Download PDFInfo
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- CN111481322A CN111481322A CN202010312600.7A CN202010312600A CN111481322A CN 111481322 A CN111481322 A CN 111481322A CN 202010312600 A CN202010312600 A CN 202010312600A CN 111481322 A CN111481322 A CN 111481322A
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- China
- Prior art keywords
- annular main
- adjustable
- capsular
- boss
- main body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
- A61F2002/16901—Supporting structure conforms to shape of capsular bag
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/0097—Coating or prosthesis-covering structure made of pharmaceutical products, e.g. antibiotics
Abstract
The invention belongs to the technical field of ophthalmologic implantation instruments, and particularly relates to an adjustable capsular inner ring which comprises an annular main body and a boss for assembling an intraocular lens, wherein the boss is arranged on the inner side surface of the annular main body, the annular main body is of a closed-loop structure or a C-shaped open-loop structure, and after the adjustable capsular inner ring is implanted into a capsular bag, the outer circumference of the annular main body can be contacted with the inner side surface of the capsular bag. The adjustable capsular inner ring is a size-adjustable ring, after the adjustable capsular inner ring is implanted into a capsular bag, the outer surface of the capsular inner ring is smooth, the inner side surface of the equator of the adjustable capsular inner ring is in full contact to form a 360-degree barrier, and the periphery of the adjustable capsular inner ring is tightly attached to a capsular bag membrane, so that the safety of phacoemulsification and posterior atrial intraocular lens implantation can be improved, the circular contour of the capsular bag of the crystalline lens is maintained, the normal physiological position of the capsular bag of the crystalline lens is maintained, the loss of vitreous body can be reduced, the eccentricity of an intraocular lens is prevented, and the contact of the anterior capsular membrane and the posterior capsular membrane is effectively avoided.
Description
Technical Field
The invention belongs to the technical field of ophthalmologic implantation instruments, and particularly relates to an adjustable intracapsular ring.
Background
Hara et al, as early as 1991, invented a capsular bag equatorial ring made of silicone material intended to maintain the circular contour of the capsular bag after cataract surgery with grooves on the inner surface for placement of haptics of an intraocular lens, which equatorial ring can both maintain the circular contour of the capsular bag and place an intraocular lens on the equatorial ring. Later, a foldable closed ring formed by alternately connecting PMMA material and copolymer material polymerized by HEMA and MMA in a segmented mode is manufactured, the number of the segments is 16, the front edge and the rear edge of the ring are designed to be sharp square edges, a 360-degree barrier is formed around the equator of the capsular bag, the incidence rate of posterior cataract is effectively reduced, the height of the ring is 0.8mm, contact of front capsular membrane and rear capsular membrane is effectively avoided, and the opening state of the capsular bag is kept. However, the closed equatorial ring has the disadvantage of not being compressible and therefore not being adjustable in size, not being able to accommodate different sized pockets, not being able to be centered naturally and causing eccentricity.
In 1994, Nagamoto designed an open-loop type capsular tension ring made of PMMA, which can support the zonules during and after cataract surgery, reduce the risk of tearing the zonules during surgery, support the equator of the capsular bag at an angle of nearly 360 °, and prevent decentration of the intraocular lens caused by excessive contraction of the capsular bag of the lens due to the zonules. In order to adapt to lens capsules of different sizes, the MORCHER company designs capsule tension rings of different specifications, the closed diameter and the open diameter of which can be freely selected by the operator. China has more commonly used capsular tension rings to treat weakening or damage of the zonules due to high myopia. In cataract surgery, the capsular tension ring may even out the tension of the zonules on the surrounding capsular bag to maintain the capsular bag centered during cataract surgery, preventing intraocular lens tilt and decentration.
Gimbel reported in 1997 the advantages of the capsular tension ring: (1) the safety of cataract ultrasonic emulsification and excision and posterior atrial intraocular lens implantation is improved; (2) the loss of the vitreous body is reduced; (3) maintaining a circular contour of the capsular bag; (4) the artificial lens is prevented from being eccentric; (5) inhibit proliferation and migration of lens epithelial cells, and reduce occurrence of after cataract. Nishi also changed the capsular tension ring to a capsular zigzag ring in 1998, which differs from the capsular tension ring the most in that all turns are sharp right angles without grinding, to enhance its effect in preventing posterior disorders.
The present invention describes an adjustable capsular inner ring interposed between a capsular equatorial ring and a capsular tension ring, the capsular inner ring having a radial dimension that is adjustable and centered with respect to the size and tension of the capsular bag, as opposed to the capsular equatorial ring. Different from a tension ring, the capsular ring has a certain thickness, can maintain the outline of the capsular bag, effectively avoid the contact of the front capsular membrane and the rear capsular membrane, keep the opening state of the capsular bag, and meanwhile, the front edge and the rear edge of the ring adopt sharp right-angle edge designs, which are beneficial to forming a 360-degree barrier around the equator of the capsular bag and effectively reduce the incidence rate of the posterior cataract. In conclusion, the adjustable capsular inner ring integrates the advantages of an equatorial ring and a tension ring, can support weak zonules, keeps the basic shape of the capsular bag, prevents the capsular bag from excessively contracting, can form a 360-degree barrier around the equator of the capsular bag, and effectively reduces the incidence rate of after cataract. Moreover, because the inner ring structure of the capsule is provided with the lug boss for placing the artificial lens, and the straight design of the inner ring structure of the capsule can effectively prevent the epithelial cells of the lens from hyperplasia or migration, the probability of the artificial lens placed on the lug boss of the inner ring of the capsule for generating the posterior capsule failure is greatly reduced. Another potential effect of the capsular bag inner ring is that the implanted intraocular lens may be replaced. After traditional intraocular lens directly put into the capsular bag, because of the proliferation of capsular bag epithelial cell migration, capsular bag and intraocular lens probably stick together very much to increased the operation degree of difficulty when taking out original intraocular lens from the capsular bag, had the cracked risk of capsular bag moreover when taking out intraocular lens. The implantation of the capsular inner ring can support weak zonules, maintain the shape of the capsular bag, effectively prevent the generation of posterior capsule obstacles, provide convenience and possibility for taking out the crystalline lens after many years of implantation, and provide possibility for adjusting the focal power of the crystalline lens in the later period. The inner capsule ring can also be provided with through holes and/or blind holes with different shapes on the annular main body and/or the lug boss for placing slow-release medicines to effectively reduce and control postoperative inflammation.
Disclosure of Invention
The technical problems to be solved by the invention are as follows:
(1) the inner ring of the capsule has a certain thickness, the shape of the capsule can be maintained as the equatorial ring, the contact of front and rear capsule membranes is effectively avoided, the opening state of the capsule is kept, a 360-degree barrier is formed around the equator of the capsule, and the incidence rate of the after cataract can be effectively reduced by the opened capsule and the 360-degree barrier; meanwhile, the problem of eccentricity caused by the fact that the size of the equatorial ring cannot be adjusted is solved.
(2) The design of the projections on the capsular bag inner ring allows for the reception of intraocular lenses of different materials and different designs, which has the potential advantage that the intraocular lens can be easily replaced if it is desired to be replaced later for various reasons (e.g., the intraocular lens is severely flawed or calcified by the material, or various side effects such as multiple foci, and shifts in power, etc.). The structure of the capsular inner ring maintains the shape of the capsular bag and the flow of aqueous humor, reduces the adhesion of the traditional implanted intraocular lens and the capsular bag, reduces the operation difficulty of taking out the adhesion intraocular lens, and reduces the risk of capsular bag rupture caused by taking out the lens.
(3) The intracapsular ring can support weak zonules after operation like a tension ring, and solves the problem that the capsular bag deviates from the center due to the hemidislocation of crystalline lens caused by the weakness or the breakage of the zonules; providing a good centering condition for the posterior intraocular lens. While the capsular ring maintains the basic shape of the capsular bag, it also prevents excessive shrinkage of the capsular bag.
(4) The inner capsule ring can also be provided with through holes and/or blind holes with different shapes on the annular main body and/or the lug boss, and is used for placing slow-release medicines to effectively reduce and control postoperative inflammation and reduce the risk of inflammation caused by untimely administration of the medicines to patients.
(II) the implementation process of the invention is as follows:
the utility model provides an adjustable intracapsular ring, includes annular main part and the boss that is used for assembling intraocular lens, the boss sets up the medial surface at annular main part, annular main part is closed loop structure or C shape open loop structure, and after adjustable intracapsular ring implantation bag, the outer circumference of annular main part can contact with the bag medial surface.
Further, when the annular main body is of a C-shaped open-loop structure, the annular main body is formed by a section of circular arc structure; when the annular main body is of a closed-loop structure, the annular main body is formed by connecting two or more arc structures through a connecting part, the connecting part is of a V-shaped or U-shaped structure, and the opening of the V-shaped or U-shaped structure faces outwards.
Further, a plurality of bosses are arranged in the annular main body, and a gap groove is formed between every two adjacent bosses.
Further, the thickness H1 of the annular body is greater than the thickness H2 of the boss.
Further, the annular main body and the boss are of an integrally formed structure.
Further, the outer side surface of the annular main body is of a plane structure, an inward-concave arc structure or an outward-convex arc structure; the cross section of the boss is rectangular or trapezoidal.
Further, a first through hole is formed in the boss; the first through hole is a waist-shaped, polygonal or circular through hole, and the first through hole is used for ensuring the flow of front and back aqueous humor or placing sustained-release medicines.
Further, a second through hole is formed in the annular main body; the second through hole is a waist-shaped, polygonal or circular through hole, and the second through hole is used for ensuring the flow of front and back aqueous humor or placing sustained-release drugs.
Furthermore, the annular main body and/or the boss are/is provided with blind holes for placing slow-release medicines, and the blind holes are waist-shaped, polygonal or circular.
Further, the annular body and the boss are made of biocompatible materials; no or no polymerizable dye is added into the material with biocompatibility; the material with biocompatibility is silica gel, polymethyl methacrylate, hydrophobic acrylate or cross-linked polyolefin material.
(III) the invention has the positive effects:
the adjustable capsular inner ring is a ring with adjustable radial size, after the adjustable capsular inner ring is implanted into a capsular bag, the periphery of the capsular inner ring is tightly attached to the inner side of the capsular bag, the capsular inner ring has a certain thickness to maintain the shape of the capsular bag, contact between a front capsular membrane and a rear capsular membrane is effectively avoided, the opening state of the capsular bag is kept, meanwhile, a 360-degree barrier can be formed around the equator by the straight edge design of the upper outer side and the lower outer side of the capsular inner ring, and the incidence rate of after cataract is effectively reduced; the size of the capsular ring may be adjusted with the size and tension of the capsular bag and maintain a centered position. The capsular bag not only supports the zonules after surgery, but also is designed to receive different artificial lenses at the designed steps of the capsular bag, and the artificial lens placed on the capsular bag has a potential benefit that it can be easily replaced if it is necessary to replace the artificial lens at a later stage for various reasons (e.g., the lens is seriously glared or calcified due to materials, or various side effects such as multiple focuses, and power shifts). The adhesion between the intraocular lens and the capsular bag is reduced, so that the operation difficulty when the intraocular lens is taken out from the capsular bag is greatly reduced, and the risk of capsular bag rupture possibly caused when the intraocular lens is taken out is reduced. At least one intraocular lens may be placed on the anterior or posterior side of the capsular bag inner loop boss, depending on the patient's circumstances. The lens power can be adjusted. Meanwhile, the capsule inner ring can be provided with through holes and/or blind holes with different shapes on the annular main body and/or the boss, and the occurrence of postoperative inflammation can be effectively reduced and controlled by placing slow-release medicines in the holes.
Drawings
FIG. 1 is a schematic view of an adjustable capsular inner ring according to embodiment 3;
FIG. 2 is a schematic view of the adjustable capsular inner ring of embodiment 4;
FIG. 3 is a schematic view of the adjustable capsular inner ring of embodiment 5;
FIG. 4 is a schematic view of the adjustable capsular inner ring of embodiment 6;
FIG. 5 is a schematic view of the adjustable capsular inner ring of embodiment 7;
FIG. 6 is a schematic view of the adjustable capsular inner ring of embodiment 8;
FIG. 7 is a schematic view of the adjustable capsular inner ring of embodiment 9;
FIG. 8 is a schematic view of an adjustable capsular inner ring according to embodiment 10;
FIG. 9 is a partial enlarged view of the circular arc structure with the outer side surface of the annular body being concave;
FIG. 10 is a partial enlarged view of the outer side surface of the ring-shaped body having a convex arc structure;
FIG. 11 is an enlarged partial view of the ring-shaped body having a trapezoidal cross-sectional shape;
FIG. 12 is a schematic view of an adjustable capsular inner ring as described in example 17;
FIG. 13 is a schematic view of an adjustable capsular inner ring as described in embodiment 18;
FIG. 14 is a schematic view of an adjustable capsular inner ring as described in embodiment 19;
FIG. 15 is a schematic view of an adjustable capsular inner ring as described in embodiment 20;
FIG. 16 is a schematic view of an adjustable capsular inner ring according to embodiment 21;
FIG. 17 is a view of the anterior side of the boss with an adjustable capsular ring for an intraocular lens;
FIG. 18 is a view of the anterior and posterior sides of the boss with an adjustable capsular ring with an intraocular lens mounted thereon;
FIG. 19 is a schematic view of an adjustable capsular inner ring as described in embodiment 22;
FIG. 20 is a schematic representation of the meaning of the front, back and inner sides of the annular body and boss;
in the figure, 1 is a ring-shaped main body, 11 is a circular arc structure, 12 is a connecting part, 13 is a second through hole, 2 is a boss, 21 is a notch groove, 22 is a first through hole, 23 is a blind hole, the thickness of H1 is a ring-shaped main body, the thickness of H2 is a boss, the front side surface of A1 is a ring-shaped main body, the rear side surface of B1 is a ring-shaped main body, the inner side surface of C1 is a ring-shaped main body, the outer side surface of D1 is a ring-shaped main body, the front side surface of A2 is a boss.
Detailed Description
The present invention will be further described with reference to the following examples.
The annular main body 1 and the boss 2 of the adjustable capsule inner ring are made of materials with biocompatibility; the biocompatible material may be free of or have added thereto a polymerizable dye. When dyes with different colors are added, the prepared adjustable capsule inner ring presents different colors, so that the capsule inner ring can be clearly distinguished when the capsule is implanted in an operation. The material with biocompatibility is silica gel, polymethyl methacrylate, hydrophobic acrylate or cross-linked polyolefin material. The slow-release medicine provided by the invention can effectively reduce and control postoperative inflammation. In addition, the shapes of the first through hole 22, the second through hole 13 and the blind hole 23 according to the present invention may be other shapes than those listed in the present specification as long as the functions of the present invention can be achieved.
Example 1
The adjustable capsular inner ring comprises an annular main body 1 and a boss 2 used for assembling an intraocular lens, wherein the boss 2 is arranged on the inner side surface of the annular main body 1, when the adjustable capsular inner ring is implanted into a capsular bag, the outer circumference of the annular main body 1 can be in contact with the inner side surface of the capsular bag, the boss 2 is positioned on the lower portion of the thickness of the annular main body 1, the thickness H1 of the annular main body 1 is greater than the thickness H2 of the boss 2, the front side surface of the boss 2 is lower than the front side surface of the annular main body 1, the rear side surface of the boss 2 is higher than the rear side surface of the annular main body 1, the annular main body 1 is of a closed-loop structure, the annular main body 1 is formed by connecting two or more than two sections of circular arc structures 11 through a connecting part 12, the connecting part 12 is of a V-shaped or U-shaped structure.
Example 2
This embodiment adjustable capsular inner ring, including annular main part 1 and the boss 2 that is used for assembling intraocular lens, boss 2 sets up the medial surface at annular main part 1, and after adjustable capsular inner ring implanted the capsular bag, the outer circumference of annular main part 1 can contact with the capsular medial surface, and boss 2 is located the upper portion of annular main part 1 thickness, the thickness H1 of annular main part 1 is greater than the thickness H2 of boss 2, and the leading flank of boss 2 is less than the leading flank of annular main part 1, and the trailing flank of boss 2 is higher than the trailing flank of annular main part 1, annular main part 1 is C shape open loop structure, and annular main part 1 constitutes for one section circular arc structure 11, annular main part 1 and boss 2 are the integrated into one piece structure.
Example 3
This embodiment adjustable intracapsular ring, see fig. 1, including annular main part 1 and the boss 2 that is used for assembling intraocular lens, annular main part 1 and boss 2 be the integrated into one piece structure, annular main part 1 is C shape open loop structure, boss 2 sets up the medial surface at annular main part 1, and annular main part 1 constitutes for one section circular arc structure 11, the medial surface of annular main part 1 is provided with two bosss 2, is provided with breach groove 21 between two bosss 2, and thickness H1 of annular main part 1 is greater than the thickness H2 of boss 2, and boss 2 is located the middle part of annular main part 1 thickness, and the leading flank of boss 2 is less than the leading flank of annular main part 1, and the trailing flank of boss 2 is higher than the trailing flank of annular main part 1. When the adjustable capsular bag is implanted into the capsular bag, the outer circumference of the ring body 1 can contact with the inner side of the capsular bag. In this embodiment, the outer side surface of the annular body 1 has a planar structure, the cross-sectional shape of the annular body 1 is rectangular, and the cross-sectional shape of the boss 2 is rectangular.
Example 4
This embodiment adjustable intracapsular ring, see fig. 2, including annular main part 1 and the boss 2 that is used for assembling intraocular lens, annular main part 1 and boss 2 be the integrated into one piece structure, annular main part 1 is closed loop structure, boss 2 sets up the medial surface at annular main part 1, and annular main part 1 is formed by connecting through connecting portion 12 two sections circular arc structures 11, connecting portion 12 is the V-arrangement structure, the opening of V-arrangement structure is outwards, the medial surface of annular main part 1 is provided with two boss 2, is provided with breach groove 21 between two boss 2, and the thickness H1 of annular main part 1 is greater than the thickness H2 of boss 2, and boss 2 is located the middle part of annular main part 1 thickness, and the leading flank of boss 2 is less than the leading flank of annular main part 1, and the trailing flank of boss 2 is higher than the trailing flank of annular main part 1. The boss 2 is provided with a first through hole 22; the first through hole 22 is a waist-shaped through hole, and the first through hole 22 is used for ensuring the flow of front and back aqueous humor or placing sustained-release drugs. When the adjustable capsular bag is implanted into the capsular bag, the outer circumference of the ring-shaped body 1 may contact the inner side of the capsular bag. In this embodiment, the cross-sectional shape of the annular body 1 is rectangular, and the cross-sectional shape of the boss 2 is rectangular.
Example 5
This embodiment adjustable intracapsular ring, see fig. 3, including annular main part 1 and the boss 2 that is used for assembling intraocular lens, annular main part 1 and boss 2 be the integrated into one piece structure, annular main part 1 is C shape open loop structure, boss 2 sets up the medial surface at annular main part 1, and annular main part 1 constitutes for one section circular arc structure 11, the medial surface of annular main part 1 is provided with two bosss 2, is provided with breach groove 21 between two bosss 2, and thickness H1 of annular main part 1 is greater than the thickness H2 of boss 2, and boss 2 is located the middle part of annular main part 1 thickness, and the leading flank of boss 2 is less than the leading flank of annular main part 1, and the trailing flank of boss 2 is higher than the trailing flank of annular main part 1. The boss 2 is provided with a first through hole 22; first through-hole 22 is the circular shape through-hole, be provided with second through-hole 13 on the annular main part 1, second through-hole 13 is the circular shape through-hole, first through-hole 22 and second through-hole 13 are used for guaranteeing the flow of front and back aqueous humor or are used for placing the slow-release medicine. When the adjustable capsular bag is implanted into the capsular bag, the outer circumference of the ring-shaped body 1 may contact the inner side of the capsular bag. In this embodiment, the cross-sectional shape of the annular body 1 is rectangular, and the cross-sectional shape of the boss 2 is rectangular.
Example 6
This embodiment adjustable intracapsular ring, see fig. 4, including annular main part 1 and the boss 2 that is used for assembling intraocular lens, annular main part 1 and boss 2 be the integrated into one piece structure, annular main part 1 is C shape open loop structure, boss 2 sets up the medial surface at annular main part 1, the arc of boss 2 is different with embodiment 3, and annular main part 1 is one section circular arc structure 11 and constitutes, the medial surface of annular main part 1 is provided with two boss 2, is provided with breach groove 21 between two boss 2, and the thickness H1 of annular main part 1 is greater than the thickness H2 of boss 2, and boss 2 is located the middle part of annular main part 1 thickness, and the leading flank of boss 2 is less than the leading flank of annular main part 1, and the trailing flank of boss 2 is higher than the trailing flank of annular main part 1. The boss 2 is provided with a first through hole 22; the first through hole 22 is a waist-shaped through hole, and the first through hole 22 is used for ensuring the flow of front and back aqueous humor or placing sustained-release drugs. When the adjustable capsular bag is implanted into the capsular bag, the outer circumference of the ring-shaped body 1 may contact the inner side of the capsular bag. In this embodiment, the cross-sectional shape of the annular body 1 is rectangular.
Example 7
Referring to fig. 5, the difference between the adjustable intracapsular ring of this embodiment and embodiment 6 is that a second through hole 13 is formed in the annular body 1, the second through hole 13 is a circular through hole, and the second through hole 13 is used for ensuring the flow of front and back aqueous humor or for placing sustained-release drugs. The remaining features were as described in example 6.
Example 8
The adjustable intracapsular ring of the present embodiment, fig. 6, comprises a ring-shaped body 1 and a boss 2 for fitting an intraocular lens, the annular main body 1 and the boss 2 are of an integrally formed structure, the annular main body 1 is of a closed loop structure, the boss 2 is arranged on the inner side surface of the annular main body 1, the annular main body 1 is formed by connecting two sections of circular arc structures 11 through a connecting part 12, connecting portion 12 is the U-shaped structure, the opening of U-shaped structure is outwards, the medial surface of cyclic annular main part 1 is provided with two bosss 2, and the arc of boss 2 is different with embodiment 3, is provided with breach groove 21 between two bosss 2, and the thickness H1 of cyclic annular main part 1 is greater than the thickness H2 of boss 2, and boss 2 is located the middle part of cyclic annular main part 1 thickness, and the leading flank of boss 2 is less than the leading flank of cyclic annular main part 1, and the trailing flank of boss 2 is higher than the trailing flank of cyclic annular main part 1. When the adjustable capsular bag is implanted into the capsular bag, the outer circumference of the ring-shaped body 1 may contact the inner side of the capsular bag. In this embodiment, the cross-sectional shape of the annular body 1 is rectangular, and the cross-sectional shape of the boss 2 is rectangular.
Example 9
Referring to fig. 7, the adjustable capsular inner ring of this embodiment is different from embodiment 8 in that a first through hole 22 is formed in the boss 2; first through-hole 22 is the circular shape through-hole, be provided with second through-hole 13 on the annular main part 1, second through-hole 13 is the circular shape through-hole, first through-hole 22 and second through-hole 13 are used for guaranteeing the flow of front and back aqueous humor or are used for placing the slowly-releasing medicine, effectively guarantee the flow of front and back aqueous humor. The remaining features were as described in example 8.
Example 10
Referring to fig. 8, the difference between the adjustable intracapsular ring of this embodiment and embodiment 4 is that a second through hole 13 is formed in the annular body 1, the second through hole 13 is a circular through hole, and the second through hole 13 is used for ensuring the flow of front and back aqueous humor or for placing sustained-release drugs. The remaining features were as described in example 4.
Example 11
The difference between the adjustable intracapsular ring of the present embodiment and embodiment 4 is that the annular main body 1 is provided with a second through hole 13, and the second through hole 13 is a waist-shaped through hole, so as to effectively ensure the flow of aqueous humor front and back. The remaining features were as described in example 4.
Example 12
The difference between the adjustable intracapsular ring of the present embodiment and embodiment 4 is that the annular main body 1 is provided with a second through hole 13, and the second through hole 13 is a polygonal through hole, so as to effectively ensure the flow of aqueous humor front and back. The remaining features were as described in example 4.
Example 13
The adjustable inner bag ring of the present embodiment is different from embodiment 8 in that a first through hole 22 is formed in the boss 2; the first through holes 22 are polygonal through holes, so that the flow of front and rear aqueous humor is effectively ensured. The remaining features were as described in example 8.
Example 14
The adjustable capsular inner ring of this embodiment is different from embodiment 4 in that the outer side surface of the annular main body 1 is a concave arc structure, as shown in the partially enlarged view of fig. 9. The remaining features were as described in example 4.
Example 15
The difference between the adjustable capsular inner ring of this embodiment and embodiment 4 is that the outer side surface of the ring main body 1 is a convex arc structure, as shown in the enlarged partial view of fig. 10. The remaining features were as described in example 4.
Example 16
The adjustable capsular inner ring of the present embodiment is different from embodiment 3 in that the cross-sectional shape of the annular main body 1 is a trapezoid, see fig. 11, which is a partially enlarged view, and the cross-sectional shape of the boss 2 is a trapezoid. The remaining features were as described in example 4.
Example 17
The adjustable intracapsular ring of this embodiment, see fig. 12, with embodiment 4 difference lies in, still be provided with the blind hole 23 that is used for placing the slowly-releasing medicine on the leading flank of boss 2, the blind hole is circular, the medial surface of boss 2 is provided with the blind hole 23 that is used for placing the slowly-releasing medicine, the blind hole is the kidney slot, also be provided with the blind hole 23 that is used for placing the slowly-releasing medicine on the leading flank of cyclic annular main part 1, the blind hole is circular. The remaining features were as described in example 4.
Example 18
The adjustable capsular inner ring of this embodiment, see fig. 13, is different from embodiment 17 in that the outer side surface of the ring-shaped main body 1 is a concave circular arc structure. The remaining features were as described in example 17.
Example 19
The adjustable capsular inner ring of the present embodiment, as shown in fig. 14, is different from embodiment 10 in that the outer side surface of the annular main body 1 is an outwardly convex circular arc structure; the front side face of the boss 2 is also provided with a blind hole 23 for placing slow-release medicines, the blind hole is circular, the inner side face of the boss 2 is provided with the blind hole 23 for placing the slow-release medicines, and the blind hole is a kidney-shaped groove. The remaining features were as described in example 10.
Example 20
Referring to fig. 15, the adjustable intracapsular ring of the present embodiment is different from embodiment 3 in that the outer side surface of the annular main body 1 is a concave circular arc structure; the inner side surface of the boss 2 is provided with a blind hole 23 for placing slow-release medicines, and the blind hole is a kidney-shaped groove. The remaining features were as described in example 3.
Example 21
This embodiment adjustable bag inner ring, see fig. 16, with embodiment 6 difference lies in, still be provided with the blind hole 23 that is used for placing the slowly-releasing medicine on the leading flank of boss 2, the blind hole is circular, the medial surface of boss 2 is provided with the blind hole 23 that is used for placing the slowly-releasing medicine, the blind hole is the kidney slot, be provided with second through-hole 13 on the cyclic annular main part 1, second through-hole 13 is circular shape through-hole, second through-hole 13 is used for guaranteeing the flow of aqueous humor around or is used for placing the slowly-releasing medicine, the lateral surface of cyclic annular main part 1 is the circular arc structure of evagination. The remaining features were as described in example 6.
Example 22
This embodiment adjustable capsular inner ring, see fig. 19, including annular main part 1 and the boss 2 that is used for assembling intraocular lens, annular main part 1 and boss 2 are integrated into one piece structure, annular main part 1 is closed loop structure, boss 2 sets up the medial surface at annular main part 1, and annular main part 1 is formed by connecting through connecting portion 12 two sections circular arc structures 11, connecting portion 12 is the V-arrangement structure, the opening of V-arrangement structure is outwards, the thickness of connecting portion 12 is the same with annular main part 1's thickness. The inner side surface of the annular main body 1 is provided with two bosses 2, a notch groove 21 is arranged between the two bosses 2, the thickness H1 of the annular main body 1 is larger than the thickness H2 of the bosses 2, the bosses 2 are positioned at the lower part of the thickness of the annular main body 1, the front side surface of each boss 2 is lower than that of the annular main body 1, and the rear side surface of each boss 2 and the rear side surface of the annular main body 1 are positioned on the same plane. The boss 2 is provided with a first through hole 22; the first through hole 22 is a waist-shaped through hole, and the first through hole 22 is used for ensuring the flow of front and back aqueous humor or placing sustained-release drugs. When the adjustable capsular bag is implanted into the capsular bag, the outer circumference of the ring-shaped body 1 may contact the inner side of the capsular bag.
Example 23
The adjustable intracapsular ring of this embodiment, see fig. 20, with embodiment 10 difference lies in, still be provided with the blind hole 23 that is used for placing the slowly-releasing medicine on the leading flank of boss 2, the blind hole is circular, the medial surface of boss 2 is provided with the blind hole 23 that is used for placing the slowly-releasing medicine, the blind hole is the kidney slot, the lateral surface of cyclic annular main part 1 is the circular arc structure of indent. The remaining features were as described in example 10.
The use method of the adjustable intracapsular ring comprises the following steps:
(1) selecting a capsular inner ring suitable for a patient, slowly pushing the capsular inner ring into the patient capsular bag by using a special capsular inner ring injector, and adjusting the position of the capsular inner ring;
(2) the state diagrams of the adjustable capsular inner ring with an intraocular lens mounted thereon are shown in fig. 17-18, depending on the actual situation of the patient, by placing an intraocular lens on the anterior or posterior side of the boss 2 of the capsular inner ring, or by placing an intraocular lens on both sides of the same.
The innovation points of the invention are as follows:
(1) the adjustable capsular inner ring has unique structural design, so that the capsular inner ring can be automatically adjusted according to the size of the capsular bag of a patient, the circular contour of the lens capsular bag is kept, the normal physiological position of the lens capsular bag is maintained, and the artificial lens is prevented from inclining and decentering.
(2) The boss 2 may be used as an implant for subsequent placement of an intraocular lens, which may be placed on the anterior or posterior side of the boss 2, or on both the anterior and posterior sides. Because the artificial lens is contacted with the inner side surface of the adjustable capsular inner ring instead of the capsular bag, the operation difficulty that the artificial lens is possibly adhered with the capsular bag and is not easy to take out is reduced.
(3) The outer edge of the annular main body 1 is fully contacted with the capsular bag, so that the barrier effect and the contact inhibition effect can be exerted, the proliferation and migration of lens epithelial cells can be prevented, the occurrence of posterior cataract can be reduced, and the front and back capsular opacification can be prevented.
(4) Be provided with first through-hole 22 on the boss 2, be provided with second through-hole 13 on the cyclic annular main part 1, first through-hole 22 and second through-hole 13 are used for guaranteeing the flow of front and back aqueous humor or are used for placing the slowly-releasing medicine, effectively guarantee the flow of front and back aqueous humor, further reduce the hyperplasia and the migration of lens epithelial cell, can also be provided with the blind hole 23 that is used for placing the slowly-releasing medicine on annular main part 1 and/or the boss 2, the slowly-releasing medicine is used for reducing the emergence of inflammation.
(5) The annular main body 1 and the boss 2 are both made of biocompatible materials; the material with biocompatibility can be added with no or no polymerizable dye, and when the material with biocompatibility is added with the polymerizable dye according to needs, the adjustable capsular inner ring presents different colors, so that the capsular inner ring can be clearly distinguished during surgical implantation.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and is not intended to limit the invention to the particular forms disclosed. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. An adjustable intracapsular ring, which is characterized in that: including annular main part (1) and boss (2) that are used for assembling intraocular lens, boss (2) set up the medial surface at annular main part (1), annular main part (1) is closed loop structure or C shape open loop structure, and after the capsular bag was implanted to adjustable intracapsular ring, the outer circumference of annular main part (1) can be with the contact of capsular bag medial surface.
2. The adjustable intravesicular ring according to claim 1, wherein: when the annular main body (1) is in a C-shaped open-loop structure, the annular main body (1) is formed by a section of circular arc structure (11); when the annular main body (1) is of a closed-loop structure, the annular main body (1) is formed by connecting two or more arc structures (11) through connecting parts (12), the connecting parts (12) are of V-shaped or U-shaped structures, and the openings of the V-shaped or U-shaped structures face outwards.
3. The adjustable intravesicular ring according to claim 1, wherein: a plurality of bosses (2) are arranged in the annular main body (1), and a gap groove (21) is formed between every two adjacent bosses (2).
4. The adjustable intravesicular ring according to claim 1, wherein: the thickness (H1) of the annular body (1) is greater than the thickness (H2) of the boss (2).
5. The adjustable intravesicular ring according to claim 1, wherein: the annular main body (1) and the boss (2) are of an integrally formed structure.
6. The adjustable intravesicular ring according to claim 1, wherein: the outer side surface of the annular main body (1) is of a plane structure, an inward-concave arc structure or an outward-convex arc structure; the cross section of the boss (2) is rectangular or trapezoidal.
7. The adjustable intravesicular ring according to claim 1, wherein: a first through hole (22) is formed in the boss (2); the first through hole (22) is a waist-shaped, polygonal or circular through hole, and the first through hole (22) is used for ensuring the flow of front and back aqueous humor or placing slow-release medicines.
8. The adjustable intravesicular ring according to claim 1, wherein: a second through hole (13) is formed in the annular main body (1); the second through hole (13) is a waist-shaped, polygonal or circular through hole, and the second through hole (13) is used for ensuring the flow of front and back aqueous humor or placing slow-release drugs.
9. The adjustable intravesicular ring according to claim 1, wherein: the annular main body (1) and/or the boss (2) are/is provided with blind holes (23) for placing slow-release medicines, and the blind holes are waist-shaped, polygonal or circular.
10. The adjustable intravesicular ring according to claim 1, wherein: the annular main body (1) and the lug boss (2) are made of materials with biocompatibility; no or no polymerizable dye is added into the material with biocompatibility; the material with biocompatibility is silica gel, polymethyl methacrylate, hydrophobic acrylate or cross-linked polyolefin material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010312600.7A CN111481322B (en) | 2020-04-20 | 2020-04-20 | Adjustable bag inner ring |
| PCT/CN2021/088302 WO2021213362A1 (en) | 2020-04-20 | 2021-04-20 | Adjustable intracapsular ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010312600.7A CN111481322B (en) | 2020-04-20 | 2020-04-20 | Adjustable bag inner ring |
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| Publication Number | Publication Date |
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| CN111481322A true CN111481322A (en) | 2020-08-04 |
| CN111481322B CN111481322B (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010312600.7A Active CN111481322B (en) | 2020-04-20 | 2020-04-20 | Adjustable bag inner ring |
Country Status (2)
| Country | Link |
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| CN (1) | CN111481322B (en) |
| WO (1) | WO2021213362A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021213362A1 (en) * | 2020-04-20 | 2021-10-28 | 西安眼得乐医疗科技有限公司 | Adjustable intracapsular ring |
| CN117425450A (en) * | 2021-06-03 | 2024-01-19 | 杰利西眼科股份有限公司 | Intraocular lens with anamorphic optics and stabilization |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2021213362A1 (en) | 2021-10-28 |
| CN111481322B (en) | 2022-02-15 |
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