Lens posterior capsule protection pad used in cataract super-breast surgery

Abstract

The utility model relates to a lens posterior capsule protection pad used in cataract super breast surgery, which comprises a folding intraocular lens protection pad and a traction rope, the folding intraocular lens protection pad is arc-shaped, can be folded and curled and is injected between a lens nucleus and a posterior capsule through an intraocular lens injector, and the traction rope is arranged between the lens nucleus and the posterior capsule. One end of the traction rope is fixedly connected with the folding intraocular lens protection pad, and the other end of the traction rope is fixed outside the eye. The foldable intraocular lens protection pad can be folded and curled and injected between a lens nucleus and a posterior capsule through the intraocular lens injector, the intraocular lens injector is an existing device, a special implanter is not needed, the production cost is greatly reduced, after the foldable intraocular lens protection pad is implanted, the injector does not need to be continuously used, and the production cost is greatly reduced. The surgical operation time is shortened, the risk that the protection pad cannot be smoothly recycled through an injector is reduced, and the foldable intraocular lens protection pad can be taken out from the anterior chamber through a traction rope after ultrasonic emulsification is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of posterior capsule protection pads, and particularly relates to a lens posterior capsule protection pad used in phacoemulsification cataract surgery. Background Art

[0002] Cataract refers to the turbidity of the lens, resulting in a decrease in light transmittance and color change, which is the main cause of moderate to severe visual impairment in humans. Cataract is the leading cause of blindness globally. With the aging of the global population, the incidence rate and the total number of affected people of cataract are both increasing continuously. The number of cataract patients is increasing year by year, so the problem of cataract cannot be ignored.

[0003] Phacoemulsification cataract extraction is currently the main surgical method for treating cataract diseases. The most common complication of the surgery is the rupture of the posterior lens capsule during the operation. The lens capsule is a vitreous membrane that completely surrounds the lens, with uneven thickness, transparent and elastic, which is secreted by lens epithelial cells, and the average thickness is about 15 micrometers. The most common cause of posterior lens capsule rupture is that the phacoemulsification needle touches the posterior capsule during the operation, resulting in posterior capsule rupture. It may also be caused by a surge in the anterior chamber during the operation, or the patient being highly nervous, resulting in spontaneous rupture. After the posterior capsule ruptures, the lens residue may fall into the vitreous cavity, and the vitreous overflows, making it impossible to continue phacoemulsification. A vitrectomy needs to be performed instead, which prolongs the patient's operation time, significantly increases the operation cost, and the postoperative visual prognosis may be poor. Therefore, avoiding the rupture of the posterior lens capsule during the operation is the key to the success of phacoemulsification cataract surgery.

[0004] The Chinese utility model patent with the authorization announcement number of CN218852942U discloses a cataract lens nucleus block support device, which adopts a deformable support ring and a nucleus block supporting surface on the deformable support ring to protect the posterior capsule, prevent the posterior capsule from being damaged, and can prevent the nucleus block from falling; the Chinese invention patent application with the application publication number of CN111973339A discloses a cataract compensation and salvage device, which adopts an elastic rod and a protective film on the elastic rod to protect the posterior capsule. Both of the above two schemes use a support film and a support body arranged at the edge of the support film for support. The support body and the support film need to be placed into the anterior chamber using a special implantator. The structure of the special implantator is relatively complex, the production cost is relatively high, and the implantator needs to be fixed before the support body and the support film are taken out. There may also be a situation where the protection device cannot be taken out smoothly due to mechanical failure. Summary of the Utility Model

[0005] The purpose of the present utility model is to address the deficiencies of the prior art and provide a lens posterior capsule protection pad used in phacoemulsification cataract surgery. A foldable intraocular lens protection pad is adopted. This foldable intraocular lens protection pad can be folded and curled and injected between the lens nucleus and the posterior capsule through an intraocular lens injector. The intraocular lens injector is an existing device, eliminating the need for a specially designed implantor, significantly reducing production costs. Moreover, after the foldable intraocular lens protection pad is implanted, there is no need to continue using the intraocular lens injector, reducing the surgical time. After phacoemulsification is completed, the foldable intraocular lens protection pad can be removed from the anterior chamber using a traction cord.

[0006] To solve the above technical problems, the present utility model provides a lens posterior capsule protection pad used in phacoemulsification cataract surgery, including a foldable intraocular lens protection pad and a traction cord. The foldable intraocular lens protection pad is disc-shaped. The foldable intraocular lens protection pad can be folded and curled and injected between the lens nucleus and the posterior capsule through an intraocular lens injector. One end of the traction cord is fixedly connected to the foldable intraocular lens protection pad, and the other end of the traction cord is fixed outside the eye.

[0007] Furthermore, the cross-section of the foldable intraocular lens protection pad is arc-shaped.

[0008] Furthermore, the radius of curvature of the arc corresponding to the cross-section of the foldable intraocular lens protection pad is 6 mm.

[0009] Furthermore, the diameter of the foldable intraocular lens protection pad is 6 mm. A size of 6 mm is sufficient to support the lens nucleus and protect the central posterior capsule.

[0010] Furthermore, the thickness of the foldable intraocular lens protection pad is 0.6 mm. A thickness of 0.6 mm is not only convenient for producing finished products but also has sufficient supporting force, and the placement of the traction cord at the main corneal incision has little impact on surgical operations.

[0011] Furthermore, the length of the traction cord is 20 mm. This length can ensure that the traction cord will not be completely drawn into the eye due to surgical operations, affecting subsequent extraction.

[0012] Furthermore, the diameter of the traction cord is 0.6 mm.

[0013] Furthermore, one end of the traction cord is integrated with the foldable intraocular lens protection pad.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model adopts a foldable intraocular lens protection pad, which can be attached to the surface of the posterior capsule of the lens to protect the posterior capsule of the lens, avoiding the phacoemulsification needle touching the posterior capsule of the lens during the operation and solving the problem of posterior capsule rupture during the operation. Even if the posterior capsule ruptures spontaneously, with the protection pad, the lens nucleus will not instantly fall into the vitreous cavity, giving the surgeon time to handle the problem in a timely manner.

[0016] 2. The foldable intraocular lens protection pad of the present utility model can be folded and curled and injected between the lens nucleus and the posterior capsule through an intraocular lens injector. The intraocular lens injector is an existing device and does not require a special implantor, greatly reducing the production cost. And after the foldable intraocular lens is implanted, there is no need to continue using the intraocular lens injector for recovery, reducing the operation time and the risk of the protection pad not being successfully recovered.

[0017] 3. The traction rope of the present utility model can be used to fix the foldable intraocular lens protection pad and to take out the foldable intraocular lens protection pad from the anterior chamber. That is, after the foldable intraocular lens protection pad is implanted between the lens nucleus and the posterior capsule, one end of the traction rope can be adhered outside the patient's eye, so as to traction one end of the foldable intraocular lens protection pad, preventing or reducing the displacement and fall of the foldable intraocular lens protection pad. After the phacoemulsification of the lens nucleus is completed, the foldable intraocular lens protection pad can be pulled out from the anterior chamber by using the traction rope.

[0018] 4. The foldable intraocular lens protection pad of the present utility model is set to be arc-shaped so that it can be completely attached to the surface of the posterior capsule of the lens.

[0019] 5. The diameter of the foldable intraocular lens protection pad of the present utility model is 6 mm. Generally, the central diameter of the posterior capsule of the lens is about 5.5 mm. The foldable intraocular lens protection pad can effectively protect the central posterior capsule of the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view of the present utility model;

[0021] Figure 2 is the top view of the present utility model.

[0022] Reference numerals: 1 - foldable intraocular lens protection pad; 2 - traction rope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] Such as Figure 1 and2 As shown, this embodiment provides a posterior capsule protection pad for use in phacoemulsification cataract surgery, which includes a foldable intraocular lens protection pad 1 and a traction cord 2. The foldable intraocular lens protection pad 1 is disc-shaped, such as Figure 2 shown. The cross-section of the foldable intraocular lens protection pad 1 is arc-shaped. The radius of curvature of the arc corresponding to the cross-section of the foldable intraocular lens protection pad 1 is 6 mm. The diameter of the foldable intraocular lens protection pad 1 is 6 mm and the thickness is 0.6 mm. The foldable intraocular lens protection pad 1 can be folded or curled and placed into the intraocular lens chamber of an intraocular lens injector, and is injected between the lens nucleus and the posterior capsule through the intraocular lens injector.

[0025] One end of the traction cord 2 is fixedly connected to the foldable intraocular lens protection pad 1. The traction cord 2 is used to take out the foldable intraocular lens protection pad 1 from the anterior chamber. The length of the traction cord 2 is 20 mm and the diameter is 0.6 mm.

[0026] In this embodiment, the traction cord 2 is made of the same material as the foldable intraocular lens protection pad 1, and one end of the traction cord 2 is integrated with the foldable intraocular lens protection pad 1.

[0027] It should be noted that intraocular lenses include various intraocular lenses such as rigid intraocular lenses and foldable intraocular lenses. Foldable intraocular lenses are generally made of materials such as silicone, hydrogel, acrylic, and polyacrylate. They are soft in texture and will automatically unfold after being folded and curled. This embodiment uses a foldable intraocular lens as the protection pad for the posterior capsule. The foldable intraocular lens protection pad 1 of this embodiment can be folded and curled and then placed into an intraocular lens injector and directly pushed into the anterior chamber. The foldable intraocular lens protection pad 1 can automatically unfold and adhere to the surface of the lens posterior capsule, thereby protecting the lens posterior capsule.

[0028] Among them, the intraocular lens injector is an existing device, and there is no need to use a special implantor, which greatly reduces the production cost. And after the foldable intraocular lens protection pad 1 is implanted, there is no need to continue using the intraocular lens injector, which reduces the operation time and reduces the risk that the protection pad cannot be normally retrieved through the injector.

[0029] The method for using the posterior capsule protective pad used in cataract phacoemulsification is as follows: after completing the water separation and water layering during the cataract phacoemulsification procedure, the lens nucleus is completely or partially removed into the anterior chamber, a viscoelastic agent is injected between the posterior capsule and the lens nucleus to form a holding space, and an intraocular lens injector equipped with a foldable intraocular lens protective pad 1 is inserted into the anterior chamber through the main corneal incision (the incision size is generally 2.8mm-3.2mm) and slowly pushed out to the surface of the posterior capsule. The foldable intraocular lens protective pad 1 naturally unfolds, and the traction rope 2 is pulled out from the intraocular lens injector. The tail of the traction rope 2 is placed outside the eye and fixed with adhesive. After the phacoemulsification of the lens nucleus is completed, the protective pad is removed. Since the foldable intraocular lens protective pad 1 is very soft, the foldable intraocular lens protective pad 1 can be completely removed by the traction rope 2, or the foldable intraocular lens protective pad 1 can be clamped in half or cut in half and removed, and the subsequent cataract surgery steps can be continued.

[0030] To reduce the risk of posterior capsule rupture and subsequent nucleus drop during phacoemulsification surgery, the present invention utilizes an existing foldable intraocular lens (IOL) as a protective pad for the posterior capsule. During surgery, an existing IOL injector is used to implant the lens in front of the posterior capsule, preventing the phacoemulsification needle from contacting the posterior capsule and protecting the posterior capsule. A traction cord (2) is then used to secure the foldable IOL protective pad (1) and assist in its removal from the anterior chamber. Both the foldable IOL and IOL injector are mature, readily manufactured, and significantly less expensive than prior art.

[0031] Phacoemulsification allows doctors to operate more confidently during phacoemulsification, further reducing the risk of posterior capsular rupture. This fully ensures patient safety, reduces the risk of high hospitalization costs, ensures visual recovery, and reduces patient complaints. Furthermore, this technology not only reduces the national economic burden but also facilitates the rapid development of a large number of young ophthalmologists, enabling them to quickly master cataract phacoemulsification techniques.

[0032] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A posterior capsular protection pad used in phacoemulsification surgery for cataract, characterized in that: It includes a foldable intraocular lens protection pad and a traction cord. The foldable intraocular lens protection pad is disc-shaped. The foldable intraocular lens protection pad can be folded and curled and injected between the lens nucleus and the posterior capsule through an intraocular lens injector. One end of the traction cord is fixedly connected to the foldable intraocular lens protection pad, and the other end of the traction cord is fixed outside the eye.

2. The posterior capsular protection pad for use in phacoemulsification cataract surgery according to claim 1, wherein: The cross-section of the foldable intraocular lens protection pad is arc-shaped.

3. The posterior capsular protection pad for use in phacoemulsification surgery for cataract according to claim 2, wherein: The radius of curvature of the arc corresponding to the cross-section of the foldable intraocular lens protection pad is 6 mm.

4. The posterior capsular protection pad for use in phacoemulsification cataract surgery according to any one of claims 1 to 3, characterized in that: The diameter of the foldable intraocular lens protection pad is 6 mm.

5. The posterior lens capsule protection pad used in phacoemulsification cataract surgery according to any one of claims 1 to 3, characterized in that: The thickness of the foldable intraocular lens protection pad is 0.6 mm.

6. The posterior lens capsule protection pad used in phacoemulsification for cataract according to any one of claims 1 to 3, characterized in that: The length of the traction cord is 20 mm.

7. The posterior lens capsule protection pad used in phacoemulsification for cataract according to any one of claims 1 to 3, characterized in that: The diameter of the traction cord is 0.6 mm.

8. The posterior capsular protection pad for use in phacoemulsification cataract surgery according to any one of claims 1 to 3, characterized in that: One end of the traction cord is integrated with the foldable intraocular lens protection pad.

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