Posterior scleral pad press-on implant

Abstract

The utility model relates to ophthalmic operation technical field discloses a kind of posterior sclera pad pressure implant, including silica gel piece, multiple suture holes are opened in both ends of silica gel piece, storage cavity is opened in silica gel piece, the silica gel piece located at the both sides in storage cavity is also opened and placed inlet, pressure block is movably installed in storage cavity, gasket is movably installed between the bottom of pressure block and storage cavity, the inboard of storage cavity is also coated with ion exchange coating.Place inlet design can place pressure block and gasket before suturing, convenient operation, and pressure block adopts hydrogel, can flexibly adapt to eye demand and cooperate with the silica gel material quality and limit protrusion of gasket, effectively limit pressure block movement, and reduce the pressure of pressure block to eye socket inside, simultaneously, the ion exchange coating in storage cavity, can accurately position hydrogel, improve support accuracy, near macular area Special arc-shaped structure and thickening design, enhanced the pertinence support to macular area, can effectively improve patient eye condition, improve operation effect.

Description

Technical Field

[0001] This utility model relates to the field of ophthalmic surgery technology, and in particular to a posterior scleral pad implant. Background Technology

[0002] Among many eye diseases, retinitis pigmentosa is a progressive, hereditary retinal disease that seriously threatens patients' vision. As the disease progresses, the retinal tissue gradually degenerates and atrophies, leading to a narrowed visual field, decreased vision, and eventually blindness.

[0003] Posterior scleral reinforcement surgery is of great significance for patients with retinitis pigmentosa. It can provide extra support for the eyeball by strengthening the posterior sclera, slowing down the elongation of the axial length of the eye, and thus delaying the progression of diseases such as retinitis pigmentosa. However, most existing posterior scleral pads are of fixed shape and size and cannot be adjusted according to the specific lesions of the patient's eyes and individual differences. This makes it difficult to provide precise and effective support to the lesion site, especially the fragile retinal tissue of patients with retinitis pigmentosa, during the operation. Not only is the surgical effect greatly reduced, but the mismatch between the pad and the eye tissue may also cause additional pressure on the intraocular tissues, aggravating the patient's condition. Furthermore, for patients with retinitis pigmentosa, the macula, as the area with the most acute vision, is extremely susceptible to the disease, but existing pads cannot provide the macula with special support that meets its physiological structure and mechanical requirements. Utility Model Content

[0004] The purpose of this invention is to provide a posterior scleral pad implant that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A posterior scleral pad implant includes a silicone sheet with multiple suture holes at both ends. A storage cavity is formed inside the silicone sheet, and insertion ports are also formed on both sides of the silicone sheet inside the storage cavity. A pressure block is movably installed inside the storage cavity, and a gasket is movably installed between the bottom of the pressure block and the storage cavity. An ion exchange coating is also applied to the inner side of the storage cavity.

[0007] As a further preferred embodiment of this utility model, one side of the insertion port is connected to the storage cavity, and the other side of the insertion port is connected to the external environment of the silicone sheet. Multiple suture holes are opened at both ends of the silicone sheet to facilitate the suture connection between the silicone sheet and the eyeball. The opening of the insertion port allows the pressure block and the pad to be placed into the storage cavity before the silicone sheet is sutured to the eyeball.

[0008] As a further preferred embodiment of this utility model, the ion exchange coating may be one of chitosan or polylactic acid-glycolic acid copolymer.

[0009] As a further preferred embodiment of this utility model, the pressure block is a hydrogel.

[0010] As a further preferred embodiment of this utility model, the gasket is made of silicone and its thickness is greater than the wall thickness of the silicone sheet. Multiple positioning protrusions are fixedly installed on the gasket. The positioning protrusions are made of resin. This coating can interact with ions in the hydrogel to form ionic bonds or other chemical bonds. By controlling the ionic composition and exchange capacity of the coating, the positioning of the hydrogel can be achieved.

[0011] As a further preferred embodiment of this utility model, the silicone sheet is designed as an arc-shaped structure that conforms to the curvature of the macular region on the side closest to the macula of the eyeball, and the thickness of the silicone sheet in this area is increased by 2mm relative to the wall thickness of the silicone sheet, thereby enhancing the targeted support for the macula.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the placement port design allows for the placement of pressure blocks and pads before suturing, facilitating operation. The pressure blocks, made of hydrogel, flexibly adapt to the needs of the eye and work in conjunction with the silicone material and limiting protrusions of the pads to effectively restrict the movement of the pressure blocks and reduce the pressure of the pressure blocks on the inside of the eye socket. Meanwhile, the ion exchange coating in the storage cavity can precisely position the hydrogel, improving the accuracy of support. The special arc-shaped structure and thickened design near the macula enhance targeted support for the macula, effectively improving the patient's eye condition and enhancing the surgical outcome. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the main structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the gasket structure of this utility model;

[0017] Figure 4 This is a schematic diagram of a partial layered structure of the silicone sheet of this utility model.

[0018] In the diagram: 1. Silicone sheet; 2. Suture hole; 3. Storage cavity; 4. Insertion port; 5. Pressure block; 6. Gasket; 7. Limiting protrusion; 8. Ion exchange coating. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figures 1-4 As shown, the present invention provides a posterior scleral pad implant, including a silicone sheet 1, with multiple suture holes 2 at both ends of the silicone sheet 1, a storage cavity 3 inside the silicone sheet 1, and insertion inlets 4 on both sides of the silicone sheet 1 inside the storage cavity 3, a pressure block 5 movably installed inside the storage cavity 3, a gasket 6 movably installed between the bottom of the pressure block 5 and the storage cavity 3, and an ion exchange coating 8 coated on the inner side of the storage cavity 3.

[0021] like Figures 1-2 , Figure 4 As shown, one side of the insertion port 4 is connected to the storage cavity 3, and the other side of the insertion port 4 is connected to the external environment of the silicone sheet 1. Multiple suture holes 2 are opened at both ends of the silicone sheet 1 to facilitate the suture connection between the silicone sheet 1 and the eyeball. The opening of the insertion port 4 allows the pressure block 5 and the pad 6 to be placed into the storage cavity 3 before the silicone sheet 1 is sutured to the eyeball. The ion exchange coating 8 can be one of chitosan and polylactic acid-glycolic acid copolymer.

[0022] like Figures 2-3 As shown, pressure block 5 is hydrogel, and gasket 6 is made of silicone with a thickness greater than that of silicone sheet 1. Multiple limiting protrusions 7 are fixedly installed on gasket 6. The limiting protrusions 7 are made of resin. This coating can interact with ions in the hydrogel to form ionic bonds or other chemical bonds. By controlling the ionic composition and exchange capacity of the coating, the hydrogel can be positioned. The silicone sheet 1 is designed as an arc-shaped structure that conforms to the curvature of the macula on the side close to the macula of the eyeball. The thickness of silicone sheet 1 in this area is increased by 2 mm relative to the wall thickness of silicone sheet 1 to enhance the targeted support for the macula.

[0023] It should be noted that this utility model is a posterior scleral pad implant. Before the surgical procedure, the silicone sheet 1 is placed on the posterior sclera, and one end of the silicone sheet 1 is carefully lifted using micro-forceps. A suture needle is passed through the pre-drilled suture hole 2 on the silicone sheet 1 and exits from the predetermined position on the posterior sclera. After exiting, the suture is tightened appropriately to allow the silicone sheet 1 to initially adhere to the posterior sclera. Then, through the suture hole 2 at the other end, the position of the combination of pressure block 5 and pad 6 can be adjusted within the storage cavity 3 using surgical machinery. The hydrogel pressure block 5 will adjust its position within the storage cavity 3 according to the physiological condition of the eye and the pressure... The force required to expand or deform provides flexible support for the eye. Furthermore, the ion exchange coating 8 coated on the inner side of the storage cavity 3 interacts with the ions in the hydrogel pressure block 5 to form ionic bonds or other chemical bonds. By adjusting the ion composition and exchange capacity of the ion exchange coating 8, the pressure block 5 can be positioned more precisely, enhancing the accuracy of support. After the positions of the pressure block 5 and the pad 6 are adjusted, the other end of the silicone sheet 1 can be sutured and fixed. After suturing, the tightness of the sutures and the fixation of the silicone sheet 1 should be checked again, and fine adjustments should be made if necessary to ensure the stability of the implant.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A posterior scleral pad implant, characterized in that: The device includes a silicone sheet (1), which has multiple suture holes (2) at both ends. A storage cavity (3) is provided inside the silicone sheet (1). The silicone sheet (1) located on both sides of the storage cavity (3) also has an insertion port (4). A pressure block (5) is movably installed inside the storage cavity (3). A gasket (6) is movably installed between the bottom of the pressure block (5) and the storage cavity (3). An ion exchange coating (8) is also coated on the inside of the storage cavity (3).

2. The posterior scleral pad implant according to claim 1, characterized in that: One side of the insertion port (4) is connected to the storage cavity (3), and the other side of the insertion port (4) is connected to the external environment of the silicone sheet (1).

3. The posterior scleral pad implant according to claim 1, characterized in that: The ion exchange coating (8) can be one of chitosan or polylactic acid-glycolic acid copolymer.

4. The posterior scleral pad implant according to claim 1, characterized in that: The pressure block (5) is a hydrogel.

5. A posterior scleral pad implant according to claim 4, characterized in that: The gasket (6) is made of silicone and its thickness is greater than that of the silicone sheet (1). Multiple limiting protrusions (7) are fixedly installed on the gasket (6). The limiting protrusions (7) are made of resin.

6. The posterior scleral pad implant according to claim 1, characterized in that: The silicone sheet (1) is designed as an arc-shaped structure that conforms to the curvature of the macula on the side close to the macula of the eyeball, and the thickness of the silicone sheet in this area is increased by 2 mm relative to the wall thickness of the silicone sheet (1).

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