Intraocular lens capsular bag

Abstract

The invention relates to an artificial lens capsular bag which is provided with a body and a strip rope fixing loop connected to the periphery of the body, the body is a tire-like structural body and is provided with a front wall, a rear wall and an edge, a body front opening is formed in the center of the front wall, a body rear opening is formed in the center of the rear wall, the front wall and the rear wall are connected with the edge of the body respectively, and a gap is formed between the front wall and the rear wall. The front wall and the rear wall are both composed of spokes, gaps are formed between the spokes on the same wall for liquid circulation, the spokes are transparent or opaque, and the spokes on the front wall and the rear wall and the gaps are arranged in a staggered mode when the spokes are opaque. By adopting the latticed tire-like structure with the strip rope fixing loop, the traction loop is fixed between sclera layers, so that the traction loop is convenient to guide and small in wound, and dislocation and deflection are not easily caused after an operation; the latticed structure is light, the anterior chamber and the posterior chamber are smoothly communicated, and the artificial lens is convenient to implant, stable to fix and wide in selection range.

Description

Technical Field

[0001] This invention relates to a special device for ophthalmic surgery, specifically an artificial lens capsule. Background Technology

[0002] Currently, in surgeries for traumatic cataracts caused by war injuries or other external trauma, intraocular lenses (IOLs) often cannot be placed in the capsular bag and ciliary sulcus due to problems with the suspensory ligaments or capsule. Existing methods mostly involve suspending the IOL with sutures or clamping it between the scleral layers, which often have limitations in IOL selection. To address this issue, some materials similar to artificial capsular bags for fixing the lens have emerged. For example, there is a utility model patent, CN218784470U, which uses a transparent medical film to form a circular sleeve with anterior and posterior walls. The anterior wall of the sleeve has an implantation hole, while the posterior wall does not. To allow the lens to be inserted into the sleeve, a tension ring is inserted after the sleeve is injected into the eyeball to shape and fix the sleeve with sutures. Finally, the IOL is implanted. To allow fluid circulation through the sleeve, several through holes are made on the anterior and posterior walls. The problems with this type of capsular structure are: firstly, the use of a tension ring to open the circular sleeve carries significant surgical risks; secondly, controlling the material and elasticity parameters of the tension ring is difficult, easily leading to uncontrollable problems and increasing the risk of surgical failure; thirdly, the tension ring and the circular sleeve are made of different materials, making it difficult to standardize their lifespan; fourthly, the multiple openings in the anterior and posterior walls make it difficult to ensure the circulation of fluid between the lens and the eye, and can easily cause blockage within the sleeve; fifthly, the transparent membrane has low strength, making it difficult to ensure the fixation of the lens; and finally, when encountering iris defects, it cannot block the light that would normally be blocked by the iris from entering the lens, causing blurred focusing and ultimately resulting in poor visual recovery or even failure. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by proposing an artificial lens capsule that allows for the smooth insertion of an artificial lens during surgery, reduces the risk of artificial lens deflection and displacement, and ensures that it can function as a substitute for the iris in cases of iris defects, thereby overcoming the problems of the prior art.

[0004] The artificial lens capsule proposed in this invention is characterized by having a body and a cable-like fixing loop connected to the periphery of the body. The body is a tire-like structure with a front wall, a rear wall, and edges. The front wall has an anterior opening in the center for lens implantation, and the rear wall has a posterior opening in the center. The front and rear walls are respectively connected to the edges of the body, and there is a gap between the front and rear walls. Both the front and rear walls are made of spokes, and there are gaps between the spokes on the same wall for fluid circulation. The spokes are transparent or opaque. When opaque, the spokes on the front and rear walls are misaligned with the gaps to block light except for the anterior opening of the body from passing through the body.

[0005] The spokes on the front and rear walls are connected by concentric rings as weft ribs, forming a grid structure between the front and rear walls to increase strength.

[0006] There are 3-4 evenly distributed cable fixing loops connected to the edge of the body.

[0007] After the strip fixation loop is inserted into the eye, it is guided by a needle to lie about 5mm between the scleral layers and then emerge from the scleral surface.

[0008] The cable fixing loop is a barbed stitch to prevent it from retracting or shifting after being fixed.

[0009] The front and rear walls have multiple weft stripes between the spokes.

[0010] The edge, front opening, and rear opening of the body are all circular ring structures with an edge diameter of 12-13.5 mm, a front opening diameter of 4.5-5 mm, and a rear opening diameter of 4-4.5 mm. The front and rear walls of the body are normally in a non-adhesive attached state, forming a gap when an artificial lens is implanted.

[0011] The front wall, rear wall, edge, front opening, and rear opening of the body are made of the same material, selected from silicone rubber, silicone gel, hydrogel, or other medical polymer materials.

[0012] When the spoke material of the front and rear walls is opaque, this is achieved by adding pigment to the selected transparent material.

[0013] The barbed structure of the body fixing loop refers to the serrated edge, single-sided or double-sided serrations on the rope loop.

[0014] This invention employs a tire-like structure with a mesh-like surface and cable-stayed fixation loops to simulate the normal lens capsule. The cable-stayed traction loops are fixed within the scleral layer. The cable-like traction loop design facilitates guidance, minimizes trauma, and greatly reduces the possibility of postoperative dislocation; the fixation point can be accurately located outside the eye; the multi-loop design reduces lens deflection; the mesh-like surface and tire-like structure can accommodate various intraocular lenses, resulting in a lightweight structure, unobstructed communication between the anterior and posterior chambers, convenient and stable intraocular lens implantation, and a wide range of selection options. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention with the front wall mesh omitted.

[0016] Figure 2 This is a three-dimensional schematic diagram of the present invention when the front and rear wall meshes are omitted.

[0017] Figure 3 This is a schematic diagram of the connection relationship when the artificial lens of the present invention is implanted (front cross-section view, omitting the capsular fixation loop).

[0018] Figure 4 This is the main view of the invention (blue grid represents the front wall, green grid represents the rear wall).

[0019] Figure 5 This is a schematic diagram of the structure of the front and rear wall spokes and gaps when the material is opaque (partially omitted).

[0020] Figure 6 This is a schematic diagram showing the connection between the present invention and the artificial lens and intraocular tissues after it is inserted into the eye.

[0021] Figure 1-6 The component numbers are as follows: 1-Capsule loop; 2-Capsule body; 3-Anterior opening of the body; 4-Posterior opening of the body; 5-Artificial lens; 6-Lens loop or wing of the artificial lens; 7-Limb of the cornea; 8-Dilated pupillary margin; 9-Scleral wall; 101-Part of the capsule loop fixed to the scleral wall; 201-Anterior wall of the body; 202-Edge of the body; 203-Posterior wall of the body; 204-Posterior wall slit; 205-Anterior wall slit; 206-Opaque posterior wall spokes; 207-Opaque anterior wall spokes; 208-Weft stripes (present on both anterior and posterior walls, facing each other); 209-Anterior wall spokes; 210-Posterior wall spokes. Detailed Implementation

[0022] The structure of the present invention and its beneficial technical effects are further described below with reference to the accompanying drawings.

[0023] like Figure 1-6 As shown, the capsule body 2 is a tire-like structure with an anterior wall 201 and a posterior wall 203. The anterior and posterior walls each have an anterior opening 3 and a posterior opening 4, respectively, for implanting and supporting the artificial lens 5. Both the anterior and posterior walls have a mesh-like structure to facilitate intraocular fluid circulation. The mesh of the anterior and posterior walls is composed of spokes extending from the anterior and posterior openings to the edge of the body, respectively, and is reinforced by weft strips 208. There are gaps between the spokes on the same wall surface. Normally, the anterior and posterior walls remain in a non-adhesive, attached state. When in use, they open to form a tire-like annular groove to support the artificial lens (see details). Figure 4 ).

[0024] When encountering iris defects, the front and rear walls of the body are made of non-transparent material. Furthermore, the non-transparent front wall spokes 207 cover the rear wall gap 204, and the non-transparent rear wall spokes 206 cover the front wall gap 205. That is, the front and rear wall spokes are misaligned with the gap (see details). Figure 5 This design blocks direct sunlight, allowing only light to enter the artificial lens through the anterior opening of the lens body for focusing and imaging. This effectively shields the iris from light while simultaneously allowing intraocular fluid to circulate around the artificial lens through the slits, preventing increased intraocular pressure. Due to the numerous slits and low resistance, fluid flow is smooth and less prone to blockage.

[0025] For patients with normal irises, a capsular bag can be used. Figure 4 The structure has circular spokes and weft strips.

[0026] like Figure 5 As shown, the anterior and posterior openings of the body, as well as the body edge, are circular. The spokes and weft strips on the anterior and posterior walls are flat strips connected as a single unit. The material is selected from silicone rubber, silicone gel, hydrogel, or other medical polymer materials, such as polyacrylate, optically transparent polymethyl methacrylate, and optically transparent silicone materials. Transparent materials can be made opaque by adding pigments, and can be used for patients with iris defects.

[0027] The capsular loop 1, also known as the cord fixation loop, is generally a surgical suture with a perforation at the edge of the body. However, some barbs can be attached to the suture. For the specific structure, please refer to the instructions and drawings of the applicant's application "Cable Index Loop Intraocular Lens" under application number 2025119842175.

[0028] In use, the tire-shaped artificial lens capsule with a mesh-like wall and a strap-fixing loop of the present invention is inserted into the eye through a lens surgery incision by injection. After preoperative examination and intraoperative positioning to determine the scleral puncture point, a hollow puncture needle is inserted into the eyeball, and the corresponding strap-fixing loop is inserted into the puncture needle core. The strap is then guided out of the scleral wall 9, and the puncture needle guides the strap to lie about 5mm between the scleral layers before it emerges from the scleral surface. All strap-fixing loops are treated in the same way. The selected artificial lens 5 is implanted or embedded in the annular groove between the anterior and posterior walls of the tire-shaped structure. Each strap is tightened and adjusted until the artificial lens is centered. The excess straps exposed outside the scleral tunnel are then cut off, forming part 101 of the capsule loop fixed to the scleral wall.

[0029] The beneficial effects of the present invention can be further summarized as follows: This invention employs a tire-like structure with a mesh-like surface and cable-stayed fixation loops to simulate a normal lens capsule. It consists of two parts: the cable-stayed fixation loops and the mesh-like tire body. The capsule loops are 3-4 flexible cables connected to the periphery of the body. These cable loops can have various designs to increase friction, such as serrated edges, single-sided / double-sided serrations, or holes in the center. During fixation, the cable loops are passed through the sclera and fixed within the scleral layer. The mesh-like tire body has a diameter of 12-13.5 mm, an anterior diameter of 4.5-5 mm, and a posterior diameter of 4-4.5 mm. The anterior and posterior walls are normally in a non-adhesive, attached state, allowing for convenient implantation and stable fixation of various intraocular lenses. This attached state allows for easy rotation and adjustment of the intraocular lens angle while preventing spontaneous rotation after adjustment. For individuals with normal irises, the tire structure can be made of transparent materials; for individuals with iris defects, the tire structure can be made of opaque materials, serving as a light-blocking mechanism for the artificial iris.

[0030] After the intraocular lens 5 is implanted into the capsule, its position is adjusted, and then it is fixed to the sclera by its own intraocular lens loop 6, so that it will not flip or shift.

[0031] The remaining unmentioned parts and labels are as described above, such as Figure 6 As stated above.

Claims

1. An artificial lens capsule, characterized in that... It has a main body and cable-stayed loops connected around the main body. The main body is a tire-like structure with a front wall, a rear wall, and edges. The front wall has an anterior opening in the center for lens implantation, and the rear wall has a posterior opening in the center. The front and rear walls are connected to the edges of the main body, and there is a gap between the front and rear walls. Both the front and rear walls are made of spokes, and there are gaps between the spokes on the same wall for fluid circulation. The spokes are transparent or opaque. When opaque, the spokes on the front and rear walls are misaligned with the gaps to block light except for the anterior opening of the main body.

2. The artificial lens capsule according to claim 1, characterized in that... The spokes on the front and rear walls are connected by concentric rings as weft ribs, forming a grid structure between the front and rear walls.

3. The artificial lens capsule according to claim 1, characterized in that... There are 3-4 evenly distributed cable fixing loops connected to the edge of the body.

4. The artificial lens capsule according to claim 1, characterized in that... After the cord fixation loop is inserted into the eye, it is guided by a needle to lie about 5mm between the scleral layers and then emerge from the scleral surface.

5. The artificial lens capsule according to claim 1, characterized in that... The cord fixing loop is a stitch with barbs.

6. The artificial lens capsule according to claim 1 or 2, characterized in that... There are multiple weft stripes between the spokes on the front and rear walls.

7. The artificial lens capsule according to claim 1, characterized in that... The edge, anterior opening, and posterior opening of the body are all circular ring structures with an edge diameter of 12-13.5 mm, an anterior opening diameter of 4.5-5 mm, and a posterior opening diameter of 4-4.5 mm. The anterior and posterior walls of the body are normally in a non-adhesive attached state, forming a gap when an artificial lens is implanted.

8. The artificial lens capsule according to claim 1, characterized in that... The front wall, rear wall, edge, front opening, and rear opening of the body are made of the same material, selected from silicone rubber, silicone gel, hydrogel, or other medical polymer materials.

9. The artificial lens capsule according to claim 1, characterized in that... When the spoke material of the front and rear walls is opaque, this is achieved by adding pigment to the selected transparent material.

10. The artificial lens capsule according to claim 1, characterized in that... The barbed structure of the body fixing loop refers to the serrated edge, single-sided or double-sided serrations on the rope loop.

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