Lens capsular bag anchoring device

Abstract

The utility model provides a lens capsular bag anchoring device. The lens capsular bag anchoring device comprises an anchoring body and an anchoring arm. The anchoring body is in an M shape, the two anchoring arms are connected to the two opposite ends of the anchoring body respectively, and fixing rings are arranged at the ends, away from the anchoring body, of the anchoring arms. In the operation process, a suture is used for knotting at the V-shaped tip end of the anchoring body, and the other end of the suture penetrates out of the sclera of the ciliary sulcus and is knotted outside the eye to be fixed between sclera layers. The middle V-shaped portion of the anchoring body is arranged in front of an anterior capsule, the two protrusions at the upper end of the M shape pull the edge of an anterior capsule ring, the anchoring arm is implanted into a capsule bag, the equator of the capsule bag is jacked, pressed and pulled, the crystal capsule bag is made to restore the shape, and when an operation is finished, the anchoring arm can be permanently fixed to the sclera, and the IOL and the capsule bag are prevented from deviating together. Secondly, for a patient with dislocation of the IOL-capsular complex, the IOL-capsular complex can be pulled to the normal position through the anchoring device and fixed to the sclera.

Description

Technical Field

[0001] This utility model relates to the field of ophthalmic surgical device technology, and in particular to a lens capsule anchoring device. Background Technology

[0002] The suspensory ligaments of the lens are a group of very fine fibers that extend from the ciliary processes and connect to the equator of the lens. Their main function is to maintain the normal position of the lens within the eye and to allow for shape changes during visual acuity adjustment. Due to trauma, congenital factors, or intraocular inflammation, rupture of the suspensory ligaments can cause lateral, superior, or inferior displacement of the lens or the intraocular lens-capsule complex, resulting in lens (partial) dislocation or intraocular lens misalignment.

[0003] However, current capsular tension ring (CTR) implantation provides a complete circular outline of the capsular equator, preventing displacement of the intraocular lens (IOL) along with the capsular bag. It is suitable for suspensory ligament tears <180°. An additional PMMA fixation hook is added to the standard CTR haptic, extending forward from the middle of the haptic to form a second plane, then turning outward, with a pre-placed eyelet at the end for easy suture placement. Based on this, CTRs with two fixation hooks have been developed. These modified CTRs can directly fix the lens capsular bag and are used to handle larger lens dislocations. They are suitable for suspensory ligament tears ≥180°. Both of these CTRs are suitable for primary surgery for lens subluxation, i.e., when the cloudy lens has been removed and the IOL has not yet been implanted or has just been implanted, at which point the capsular bag is relatively loose and soft. However, if the IOL-capsule complex becomes misaligned more than one month after cataract removal, the capsule has already shrunk and fibrosed, becoming tightly wrapped around the lens, making it difficult to implant a tension ring at this point. Summary of the Invention

[0004] This invention provides a lens capsule anchoring device to solve the above-mentioned technical problems.

[0005] A lens capsule anchoring device, the lens capsule anchoring device comprising:

[0006] Anchor body, which is "M" shaped; anchor arms, which are two arms connected to opposite ends of the anchor body respectively, with a fixing ring at the end of the anchor arm away from the anchor body.

[0007] Preferably, the lens capsule anchoring device is a rigid or plastic component.

[0008] Preferably, the angle between the anchoring arm and the axis of symmetry of the anchoring body is 30° to 90°.

[0009] Preferably, the ratio of the length of the anchoring arm to the length of the anchoring body is 0.1 to 1.

[0010] Preferably, the lens capsule anchoring device further includes an extension arm connected to a "V"-shaped tip at the center of the anchoring body.

[0011] Preferably, the anchoring body and the anchoring arm are connected in a smooth transition.

[0012] Preferably, the anchoring body and the anchoring arm are integrally formed.

[0013] Preferably, the anchoring body is an M-shaped structure with a smooth transition.

[0014] Preferably, the lens capsule anchoring device is made of polymer material.

[0015] Preferably, the anchoring arm has an arc-shaped structure.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the lens capsule anchoring device according to one embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the lens capsule anchoring device according to another embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram showing the placement of the lens capsule anchoring device according to one embodiment of the present invention.

[0022] In the figure: 100, lens capsule anchoring device; 110, anchoring body; 111, “V” shaped part; 112, protrusion; 113, side arm; 120, anchoring arm; 121, fixing ring; 130, extension arm. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this utility model.

[0025] This utility model embodiment provides a lens capsule anchoring device 100, such as Figure 1 As shown, the lens capsule anchoring device 100 includes an anchoring body 110 and anchoring arms 120. The anchoring body 110 is "M" shaped, and there are two anchoring arms 120, which are respectively connected to the opposite ends of the anchoring body 110. A fixing ring 121 is provided at the end of the anchoring arm 120 away from the anchoring body 110.

[0026] The working principle and beneficial effects of the above technical solution are as follows: During the operation, a suture is knotted at the "V"-shaped tip of the anchoring body 110, and the other end of the suture passes through the sclera of the ciliary sulcus and is knotted and fixed between the scleral layers outside the eye. The middle "V"-shaped part of the anchoring body 110 is placed in front of the anterior capsule, and the two protrusions 112 at the upper end of the "M" shape pull the edge of the anterior capsule ring. The anchoring arm 120 is then implanted into the capsular bag, pressing and pulling the equatorial part of the capsular bag to restore the shape of the lens capsular bag. The existing tension ring technology is more suitable for implantation in stage I surgery, but it is difficult to implant the CTR into the capsular bag when the IOL-capsular bag complex is displaced. This application can not only be implanted in stage I, but also act as a capsular bag hook during surgery. At the end of the surgery, it can be permanently fixed to the sclera to prevent the IOL and capsular bag from displaced together. Secondly, in patients with IOL-capsular bag complex dislocation, the anchoring device in this application can be used to pull the IOL-capsular bag complex back to the correct position and fix it to the sclera.

[0027] Optionally, the lens capsule anchoring device 100 is a rigid or plastic component.

[0028] The working principle and beneficial effects of the above technical solution are as follows: when the device is a plastic part, external force can be used to deform the structure, thereby adjusting the setting and traction position and improving the bag fixation effect.

[0029] Preferably, the angle between the anchoring arm 120 and the axis of symmetry of the anchoring body 110 is 30° to 90°.

[0030] The working principle and beneficial effects of the above technical solution are as follows: it is applicable to lens openings of different sizes, which helps to improve surgical outcomes.

[0031] Preferably, the ratio of the length of the anchoring arm 120 to the length of the anchoring body 110 is 0.1 to 1.

[0032] The working principle and beneficial effects of the above technical solution are as follows: by setting anchoring arms 120 of different lengths, the anchoring area can be increased and the traction and anchoring effects can be adjusted.

[0033] Preferably, the lens capsule anchoring device 100 further includes an extension arm 130, which is connected to a "V"-shaped tip at the center of the anchoring body 110.

[0034] The working principle and beneficial effects of the above technical solution are as follows: Using a syringe needle of the appropriate type, the extension arm 130 is guided to the outside of the eye. Electrocautery is used to bend the extension arm 130 by 90°, and it is then embedded and fixed within the scleral layer. The middle "V"-shaped portion 111 of the anchoring body 110 is positioned anterior to the anterior capsule, and the two protrusions 112 above it pull on the edge of the anterior capsule ring. The anchoring arm 120 and the two side arms 113 of the anchoring body 110 are implanted into the capsular bag. The anchoring arm 120 presses against and pulls the equatorial portion of the capsular bag, restoring the shape of the lens capsular bag.

[0035] Preferably, the anchoring body 110 and the anchoring arm 120 are connected in a smooth transition.

[0036] The working principle and beneficial effects of the above technical solution are: to avoid sharp angles causing trauma to the eyes.

[0037] Preferably, the anchoring body 110 and the anchoring arm 120 are integrally formed.

[0038] The working principle and beneficial effects of the above technical solution are: it facilitates production and manufacturing, and ensures structural stability.

[0039] Preferably, the anchor body 110 is an M-shaped structure with a smooth transition.

[0040] The working principle and beneficial effects of the above technical solution are: to further avoid sharp angles causing trauma to the eyes.

[0041] Preferably, the lens capsule anchoring device 100 is made of a polymer material, such as PMMA, polyvinylidene fluoride, or polymers made of methyl methacrylate, ethylene glycol dimethacrylate, or 2,2'-azo (isobutyl cyanide).

[0042] The working principle and beneficial effects of the above technical solution are as follows: the material is hygienic, providing both intraocular stability and excellent support. When it is a plastic material, it can accommodate plastic deformation.

[0043] Preferably, the anchor arm 120 has an arc-shaped structure.

[0044] The working principle and beneficial effects of the above technical solution are: it helps to avoid stress concentration that could cause the anchor arm 120 to break, thus improving structural stability.

[0045] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A lens capsule anchoring device (100), characterized in that, The lens capsule anchoring device (100) includes: Anchor body (110), the anchor body (110) being "M" shaped; Anchor arms (120), there are two anchor arms (120) and they are respectively connected to the opposite ends of the anchor body (110). The end of the anchor arm (120) away from the anchor body (110) is provided with a fixing ring (121).

2. The lens capsule anchoring device (100) according to claim 1, characterized in that, The lens capsule anchoring device (100) is a rigid or plastic component.

3. The lens capsule anchoring device (100) according to claim 1, characterized in that, The angle between the anchoring arm (120) and the anchoring body (110) is 30° to 90°.

4. The lens capsule anchoring device (100) according to claim 1, characterized in that, The ratio of the length of the anchoring arm (120) to the length of the anchoring body (110) is 0.1 to 1.

5. The lens capsule anchoring device (100) according to claim 1, characterized in that, The lens capsule anchoring device (100) further includes an extension arm (130) connected to a "V"-shaped tip at the center of the anchoring body (110).

6. The lens capsule anchoring device (100) according to claim 1, characterized in that, The anchoring body (110) and the anchoring arm (120) are connected by a smooth transition.

7. The lens capsule anchoring device (100) according to claim 1, characterized in that, The anchoring body (110) and the anchoring arm (120) are integrally formed.

8. The lens capsule anchoring device (100) according to claim 1, characterized in that, The anchoring body (110) is a smoothly transitioned "M" shaped structure.

9. The lens capsule anchoring device (100) according to claim 1, characterized in that, The lens capsule anchoring device (100) is made of polymer material.

10. The lens capsule anchoring device (100) according to any one of claims 1-9, characterized in that, The anchoring arm (120) has an arc-shaped structure.

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