Crystal capsular bag anchor

Abstract

The invention discloses a crystal capsular bag anchor for fixing the position of a crystal capsular bag during and after an operation. The crystal capsular bag anchor comprises a first anchor section and a second anchor section, the first anchor section is in an arc shape, the second anchor section is fixedly connected to the middle point of the inner side of the arc of the first anchor section, the curvature radius of the arc is 6 mm, the tangential direction of the middle point of the first anchor section is perpendicular to the central axis of the second anchor section, and the first anchor section and the second anchor section are integrally formed in an injection mode through medical-grade polymethyl methacrylate. The intraocular lens bag fixing device is simple in structure, good in fixing effect, excellent in biocompatibility, smooth in surface and convenient to operate, can effectively stabilize the lens bag in and after an operation, keeps the lens bag diaphragm to the maximum extent, reduces the risk of postoperative intraocular lens dislocation, and is suitable for fixing the lens bag in an ophthalmic operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a lens capsule anchor. Background Art

[0002] The capsular bag anchor is a medical device used in ophthalmic surgery, primarily during cataract surgery and intraocular lens implantation. It secures the capsular bag to ensure the stable position of the intraocular lens during and after surgery. In recent years, with the continuous advancement of cataract surgery techniques, capsular bag anchoring technology has garnered widespread attention.

[0003] In existing technologies, fixation of a lens capsular bag that is at risk of dislocation or has already dislocated is usually achieved through methods such as capsular tension rings or suture suspension. However, tension ring fixation is only suitable for patients with a small range of subluxation, and there is still a risk of dislocation of the intraocular lens-capsular bag complex after surgery. If the tension ring is fixed to the eyeball wall with non-absorbable sutures during surgery, the sutures have the potential to cut the anterior capsule of the lens, increasing the surgical risk. In addition, the non-absorbable sutures used to fix the tension ring or intraocular lens to the eyeball wall also have the risk of the knot loosening or being exposed after surgery, and the surgical method is complex and the operation time is long.

[0004] To address these issues, some improved solutions have emerged on the market, such as sutureable capsular tension rings. However, these devices still have design flaws, such as loosening of the sutures and inconvenient manipulation after IOL implantation, making them difficult to meet the high precision and safety requirements of ophthalmic surgery.

[0005] Therefore, there is an urgent need for a lens capsular bag fixation device with a simple structure, good fixation effect, excellent biocompatibility, and easy operation to address the shortcomings of the existing technology and improve the safety and success rate of ophthalmic surgery. The present invention addresses the above-mentioned problems and proposes a new lens capsular bag anchor. Summary of the Invention

[0006] The object of the present invention is to provide a lens capsule fixation device to solve the problems raised by the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a lens capsular anchor, comprising anchor section one and anchor section two, wherein: anchor section two is fixedly connected to the inner midpoint of the arc of anchor section one, anchor section one is arc-shaped, with a blunt end and a curvature radius of 6 mm, the tangent direction of the midpoint of anchor section one is perpendicular to the central axis of anchor section two, anchor section one and anchor section two are integrally injection molded, and the material is both medical-grade polymethyl methacrylate.

[0008] As a preferred technical solution of the present invention, the structure of the second anchor section includes a connecting portion and a reflected portion, the connecting portion is a straight segment with a length of 3 mm, and transitions to the first anchor section through an upward rounded corner; the reflected portion is a straight segment with a length of 6-8 mm, and the connecting portion and the reflected portion transition through a rounded corner, and the rounded corner radius is 1 mm.

[0009] As a preferred technical solution of the present invention, the second anchor section is a cylindrical structure with a diameter of 0.2 mm, and the end of the second anchor section is arc-shaped with a length of about 4 mm.

[0010] As a preferred technical solution of the present invention, the total length of the first anchor section is 9.5-11.5 mm, and the total length of the second anchor section is 14-16 mm (including the connecting portion, the inflected portion and the end).

[0011] Compared with the prior art, the present invention has the following beneficial effects: The lens capsular bag anchor provided by the present invention is designed by integral injection molding of anchor section one and anchor section two, and adopts medical-grade polymethyl methacrylate material, which has excellent elasticity and biocompatibility. The arc-shaped structure of anchor section one combined with the vertical design of anchor section two can effectively anchor the lens capsular bag, with a stable fixation effect, reducing the risk of postoperative dislocation or displacement of the intraocular lens, and is suitable for the ocular anatomical structure of different patients. In addition, the lens capsular bag anchor can be combined with 1-3 pieces depending on the risk level of capsular bag dislocation or in combination with a capsular bag tension ring to fix the capsular bag. The arc-shaped design of the end of the folded part can be used to guide out of the eyeball wall with a 1ml needle during surgery, and the end material is vitrified by a burner and then fixed under the conjunctiva, avoiding the risk of postoperative suture loosening and exposure.

[0012] In addition, the preparation method of the present invention has a simple process. By optimizing the injection molding parameters and mold accuracy, high-precision dimensional control can be achieved, and the finished product has high consistency. The overall structural design simplifies surgical operations, improves the safety and success rate of ophthalmic surgery, and has good clinical application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the lens capsular anchor proposed in the present invention; Figure 2 This is a schematic diagram of the partial structure of the lens capsular anchor proposed in the present invention; Figure 3 A side view of the lens capsular anchor proposed by the present invention; Figure 4 A top view of the lens capsular bag anchor proposed in the present invention.

[0014] In the figure: 1 anchor section 1; 2 anchor section 2; 21 connecting portion; 22 inflected portion. DETAILED DESCRIPTION

[0015] The following is a combination of the embodiments of the present invention Figure 1 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] Example 1: Structure of the lens capsular anchor; See Figure 1-4 This embodiment provides a lens capsular bag anchor, including an anchor section 1 and an anchor section 2, which are integrally injection molded and made of medical-grade polymethyl methacrylate.

[0017] Wherein: the second anchor section is fixedly connected to the inner midpoint of the arc of the first anchor section. The first anchor section is arc-shaped, with a blunt end and a curvature radius of 6 mm. The tangent direction of the midpoint of the first anchor section is perpendicular to the central axis of the second anchor section. The first and second anchor sections are integrally injection molded, and the material is medical-grade polymethyl methacrylate.

[0018] The structure of the second anchor section includes a connecting portion and a folded portion. The connecting portion is a straight segment with a length of 3 mm, and transitions to the first anchor section through an upward rounded corner. The folded portion is a straight segment with a length of 6-8 mm, and transitions to the connecting portion through a rounded corner with a rounded corner radius of 1 mm.

[0019] The second anchor section is a cylindrical structure with a diameter of 0.2 mm. The end of the second anchor section is arc-shaped with a length of about 4 mm.

[0020] The total length of the first anchor section is 9.5-11.5 mm, the total length of the second anchor section is 14-16 mm (including the connecting portion, the inflected portion and the end), and the total weight of the lens capsular anchor is 0.015-0.025 g.

[0021] The anchor section 1 is arc-shaped with a blunt end, a curvature radius of 6 mm, and an arc length of 9.5-11.5 mm.

[0022] The second anchor section 2 is cylindrical and includes a connecting portion and a folded portion. The connecting portion is a straight segment, 3 mm long, transitioning to the first anchor section via an upwardly rounded corner. The folded portion is a straight segment, 6-8 mm long, with an arc-shaped end approximately 4 mm long. The connecting portion and the folded portion transition via a rounded corner with a radius of 1 mm. The total length of the second anchor section (including the connecting portion, folded portion, and end) is 14-16 mm. The tangent line at the midpoint of the first anchor section is perpendicular to the central axis of the second anchor section.

[0023] The structure of the lens capsular anchor: Anchor segment 1: Shape and size: Anchor segment 1 is curved with a radius of curvature of 6 mm and a total length of 9.5-11.5 mm, adapted to the anatomical structure of the capsular bag.

[0024] End design: The end of one section of the anchor is blunt and rounded to prevent damage to the capsular tissue during implantation.

[0025] Function: The curved design allows one section of the anchor to fit the inner curvature of the bladder bag, providing stable support and evenly distributing pressure.

[0026] Anchor section 2: Connection method: Anchor section 2 is fixedly connected to the inner midpoint of the arc of anchor section 1. The tangent direction of the midpoint of anchor section 1 is perpendicular to the central axis of anchor section 2 to ensure the best force distribution.

[0027] Structure: Connecting portion 21: a straight segment, 3 mm in length, connecting the anchor segment and the inflected portion.

[0028] The inflected portion 22 is a straight segment with a length of 6-8 mm, used to fix the entire structure on the wall of the eyeball.

[0029] Transition: The connecting part and the reflected part are transitioned through rounded corners with a radius of 1 mm to reduce the pressure and shearing effect on the residual anterior capsule tissue.

[0030] Shape and size: The second section of the anchor is a cylindrical structure with a diameter of 0.2 mm and a total length of 14-16 mm (including the connecting part, the inflected part and the end).

[0031] End design: The end of the second section of the anchor is curved and about 4 mm long, which is convenient for guidance and fixation outside the eyeball.

[0032] Function: The cylindrical design and the inflected part enable the second section of the anchor to be firmly anchored in the capsular bag to prevent displacement.

[0033] Material: Anchor section 1 and anchor section 2 are made of medical-grade polymethyl methacrylate through integral injection molding.

[0034] Biocompatibility: The material complies with ISO 10993 standards, ensuring safety for intraocular use, reducing the risk of inflammation or rejection, and is suitable for fixation of the lens capsular bag during ophthalmic surgery.

[0035] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lens capsular bag anchor, characterized in that: The invention comprises an anchor section (1) and an anchor section (2), wherein the anchor section (2) is fixedly connected to the inner midpoint of the arc of the anchor section (1); the anchor section (1) is arc-shaped, with a blunt end and a curvature radius of 6 mm; the midpoint tangent direction of the anchor section (1) is perpendicular to the central axis of the anchor section (2); the anchor section (1) and the anchor section (2) are integrally injection molded, and the material is medical grade polymethyl methacrylate.

2. The lens capsular anchor according to claim 1, wherein: The structure of the second anchor section (2) includes a connecting portion (21) and a folded portion (22). The connecting portion (21) is a straight segment with a length of 3 mm and transitions to the first anchor section through an upward rounded corner. The folded portion (22) is a straight segment with a length of 6-8 mm and transitions to the connecting portion (21) and the folded portion (22) through a rounded corner with a radius of 1 mm.

3. The lens capsular bag anchor according to claim 2, wherein: The second anchor section (2) is a cylindrical structure with a diameter of 0.2 mm. The end of the second anchor section (2) is arc-shaped with a length of about 4 mm.

4. The lens capsular anchor according to claim 1, wherein: The total length of the first anchor section (1) is 9.5-11.5 mm, and the total length of the second anchor section (2) is 14-16 mm (including the connecting portion, the inflected portion and the end).

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