Inflatable sclera external pad device

Abstract

The utility model belongs to the field of medical instruments, and particularly relates to an inflatable sclera external pad device. The device comprises a guide plate, a plurality of positioning grooves used for clamping suture lines are formed in the side wall of the guide plate, an air bag is fixed to the guide plate in the direction facing an eyeball, a through hole communicated with the air bag is formed in the guide plate, a plug block is independently installed in the through hole in a penetrating mode, and an air conveying hole used for communicating the interior and the exterior of the air bag is formed in the plug block. The section, located in the air bag, of the plug block is sleeved with a sealing sleeve, the two ends of the sealing sleeve are fixed to the plug block and the guide plate respectively, a sealing assembly used for sealing the air conveying hole is arranged between the guide plate and the plug block, and a positioning assembly is arranged between the guide plate and the plug block. A suture line is clamped into the positioning groove, and the suture line is positioned and fixed through the positioning groove, so that the guide plate can be fixed more firmly; by controlling the air inflation amount in the air bag, the jacking depth is effectively controlled, and the operation effect and the operation success rate are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical devices, especially relates to a inflatable scleral external pad device. BACKGROUND

[0002] Retinal detachment is a serious eye disease, which refers to the separation of retinal neuroepithelium and pigment epithelium, resulting in liquid accumulation between the two layers to form subretinal fluid; according to the causes, retinal detachment can be divided into three categories: hole source retinal detachment, traction retinal detachment and exudative retinal detachment. Most hole source retinal detachment needs surgical intervention, and common surgical methods include laser retinal fixation, inflatable retinal fixation, pars plana vitrectomy and scleral external pad.

[0003] Scleral external pad device is needed in scleral external pad surgery, and currently used in clinical practice is mostly silicone or silica sponge. Scleral external pad surgery places scleral external pad device on the scleral surface corresponding to the retinal hole, pressurizes the scleral surface inward, makes the retina adhere to the scleral external pad device, so as to close the hole and avoid liquid from the vitreous cavity from entering the subretinal space again. However, the expansion coefficient of the silicone or silica sponge used in the existing scleral external pad device is limited, it is not easy to fix it firmly during implantation, and the depth of the pressure is fixed. During surgery, the depth of the pressure may not be enough, which often leads to poor sealing of the intraocular hole, resulting in surgical failure and reducing the success rate of surgery. UTILITY MODEL CONTENTS

[0004] In view of the above deficiencies in the prior art, the utility model solves the technical problem of providing an inflatable scleral external pad device that can be fixed more firmly and can adjust different scleral pressure depths as needed to improve the success rate of surgery.

[0005] The inflatable scleral external pad device comprises a guide plate, a plurality of positioning grooves for clamping suture lines are formed in the side wall of the guide plate, a gas bag is fixed to the direction of the eyeball of the guide plate, a through hole communicating with the gas bag is formed in the guide plate, a plug is independently arranged in the through hole, a gas inlet is formed in the plug for communication between the inside and outside of the gas bag, a sealing sleeve is sleeved on the part of the plug in the gas bag, the two ends of the sealing sleeve are fixed on the plug and the guide plate respectively, a sealing assembly for sealing the gas inlet is arranged between the guide plate and the plug, and a positioning assembly for positioning the moved plug is arranged between the guide plate and the plug.

[0006] Further, the sealing assembly comprises a reset pad, the cross section of the plug block is in the shape of an isosceles trapezoid, the smaller end of the plug block is towards the air bag, the hole wall of the through hole is in the shape of an inclination which is matched with the slope of the plug block, the surface of the guide plate which is away from the air bag is provided with a groove, the reset pad is located in the groove, one end of the reset pad is fixed on the groove wall, and a sealing layer is arranged between the reset pad and the groove bottom.

[0007] Further, the positioning assembly comprises two clamping blocks, the two clamping blocks are fixed on two opposite side walls of the plug block respectively, and the hole wall of the through hole is provided with a clamping groove for clamping the clamping blocks.

[0008] Further, the plug block is made of elastic material.

[0009] Further, the guide plate and the air bag are made of elastic material.

[0010] Further, the sealing sleeve is made of elastic material.

[0011] Further, the gas inlet hole is an oval hole.

[0012] Further, the guide plate is in the shape of an arc.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The suture is clamped into the positioning groove, the suture is positioned and fixed through the positioning groove, the guide plate can be fixed more firmly, the plug block is pulled out, the syringe needle or the gas inlet pipe is away from the air bag when the air bag is inflated through the syringe needle or the gas inlet pipe, and the air bag is prevented from being damaged, the guide plate can position the air bag when the air bag is inflated, the air bag expands towards the eyeball, the inflated air bag can better adhere to the eyeball wall, and the air bag is prevented from expanding in the opposite direction of the eyeball, the inflation volume of the air bag is adjusted by controlling the inflation amount in the air bag, the top pressure depth is effectively controlled, and the overall surgery effect and surgery success rate are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the utility model;

[0016] Figure 2 It is Figure 1 It is an enlarged schematic view of the a area in the figure;

[0017] Figure 3 It is a perspective view of the utility model;

[0018] Figure 4 It is a use schematic view of the end of the sealing plug for gas inlet and outlet;

[0019] Figure 5 Figure 2 is a use state diagram of the utility model on the eyeball;

[0020] The names of various components in the figure are: 1, guide plate; 2, reset pad; 3, sealing layer; 4, air bag; 5, sealing sleeve; 6, plug; 7, clamping block; 8, inclined surface; 9, gas inlet; 10, positioning groove. DETAILED DESCRIPTION

[0021] The utility model will be further described below by specific embodiments combined with the drawings, but it is not used to limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the invention.

[0022] Example 1

[0023] The air-filled scleral external padding device described in this example, as shown in Figure 1 , Figure 2 and Figure 3 , includes a guide plate 1, which is arc-shaped, so that the guide plate 1 can adapt to the curvature of the eyeball, allowing the air bag 4 on the guide plate 1 to fit the eyeball more closely, as shown in Figure 5 .

[0024] A plurality of positioning grooves 10 for clamping suture lines are provided on the side wall of the guide plate 1, as shown in Figure 3 . Positioning grooves 10 are provided on both ends of the front and rear side walls of the guide plate 1. During the operation, the suture line can be clamped into the positioning groove 10, and the suture line can be knotted. The positioning groove 10 positions the suture line, making it easier to fix the guide plate 1, as shown in Figure 5 . This makes it difficult for the suture line to fall off after the guide plate 1 is fixed, allowing the guide plate 1 to be fixed more firmly, avoiding the situation that the operation fails due to insecure fixation;

[0025] The air bag 4 is fixed to the direction of the eyeball, and the guide plate 1 and the air bag 4 are made of medical silicone, medical latex, etc. When the air bag 4 is not filled with air, it is in a flat state, at which time the entire padding device is thin, making it easier to implant on the surface of the sclera. When the air bag 4 is inflated, the air bag 4 expands towards the eyeball, pressing against the ball wall to form a padding effect. The retina and choroid inside the ball wall form a ridge due to external pressure. This ridge structure helps to close the hole, thereby resetting the retina. During the operation, the amount of air filled in the air bag 4 can be controlled to adjust the expansion volume of the air bag 4, thereby effectively controlling the pressure depth and avoiding poor closure of the intraocular hole due to insufficient pressure depth. The guide plate 1 fixed on the surface of the sclera can position the air bag 4, allowing the air bag 4 to expand towards the eyeball, and allowing the inflated air bag 4 to better fit on the ball wall, preventing the air bag 4 from expanding in the opposite direction of the eyeball.

[0026] The guide plate 1 is provided with a through hole communicated with the air bag 4, and a plug 6 is independently arranged in the through hole.

[0027] The plug 6 is provided with a gas inlet hole 9 for communicating the inside and outside of the air bag 4, and a sealing sleeve 5 is sleeved on a section of the plug 6 in the air bag 4. The two ends of the sealing sleeve 5 are fixed on the plug 6 and the guide plate 1 respectively, and the sealing sleeve 5 is made of medical silica gel, medical latex or the like. The sealing sleeve 5 is used for sealing the gap between the plug 6 and the through hole, so as to avoid the gas in the air bag 4 from leaking from the gap. When the plug 6 moves, the sealing sleeve 5 will be deformed, so as to adapt to the length of the plug 6 entering the air bag 4, and the air bag 4 is completely inserted into the through hole for storage. After the one end of the plug 6 is inserted out of the through hole, a syringe needle or a gas inlet pipe is inserted into the gas inlet hole 9 for inflation, so that the syringe needle or the gas inlet pipe can be away from the air bag 4, and the air bag 4 is prevented from being damaged and broken during use.

[0028] Further, as shown in Figure 2 and Figure 4 , the preferred embodiment includes a reset pad 2, the cross section of the plug 6 is in the shape of isosceles trapezoid, the smaller end of the plug 6 faces the air bag 4, and the hole wall of the through hole is in the shape of inclination which is in contact with the inclined surface of the plug 6. When the plug 6 moves into the through hole, the inclined surface of the plug 6 is in contact with the inclined hole wall, the plug 6 is extruded and deformed, and the gas inlet hole 9 is deformed and closed, so as to seal the gas inlet hole 9 and prevent the gas in the air bag 4 from leaking. In the embodiment, the gas inlet hole 9 is an oval hole, so that the gas inlet hole 9 is not easy to have a gap after being closed. The surface of the guide plate 1 away from the air bag 4 is provided with a groove, the reset pad 2 is located in the groove, one end of the reset pad 2 is fixed on the groove wall, and a sealing layer 3 is arranged between the reset pad 2 and the groove bottom. In the embodiment, the reset pad 2 is made of medical silica gel, medical latex or the like. When the reset pad 2 is opened by external force, it will be deformed, and after the external force disappears, it will return to the groove bottom by its elasticity, so as to block the plug 6 and prevent it from being taken out of the through hole. The sealing layer 3 is made of medical natural component sealing glue, medical semi-synthetic glue, medical full synthetic glue or the like. The gap between the reset pad 2 and the groove bottom can be sealed by the sealing layer 3, so as to prevent the gas in the air bag 4 from leaking. The whole scheme constitutes a sealing assembly for sealing the gas inlet hole 9. Of course, the sealing assembly can also adopt a plug rod. The surface of the guide plate 1 away from the air bag 4 is provided with a groove, the reset pad 2 is located in the groove, one end of the reset pad 2 is fixed on the groove wall, a sealing layer 3 is arranged between the reset pad 2 and the groove bottom, and the plug rod is arranged in the gas inlet hole 9 to seal it.

[0029] Further, as shown in Figure 2 andFigure 4 As shown, the preferred embodiment in this embodiment includes two blocks 7, two blocks 7 are fixed on the side wall of the plug block 6 in two opposite directions respectively, the hole wall of the through hole is provided with a clamping groove for clamping the block 7; in this embodiment, the block 7 is made of medical silica gel, medical latex and other materials, when the plug block 6 is inserted into the through hole, the plug block 6 is deformed to close and seal the gas inlet hole 9, the block 7 is extruded by the hole wall and deformed, after the plug block 6 moves to the appropriate position, each block 7 will be clamped in the corresponding clamping groove, so as to position the plug block 6 inserted into the through hole, avoid the plug block 6 moving in the process of use, prevent the gas inlet hole 9 from being opened and the gas in the air bag 4 from leaking; the whole scheme constitutes a positioning assembly for positioning the moved plug block 6; of course, the positioning assembly can also use a protrusion, the protrusion is fixed on the side wall of the plug block 6, when one end of the plug block 6 is inserted into the through hole, the protrusion is extruded by the hole wall and deformed, after the plug block 6 moves to the appropriate position, the protrusion is located in the air bag 4, the guide plate 1 plate body at the through hole will block the protrusion, so as to prevent the plug block 6 from coming out of the through hole.

[0030] In actual use, the air bag 4 is in a flat state without inflation, at this time the whole pad device is thin, which is more convenient to implant on the surface of the sclera, the suture is clamped into the positioning groove 10, and the suture is knotted, positioned by the positioning groove 10, so as to more conveniently fix the guide plate 1, such as Figure 5 As shown, the suture is not easy to fall off after the guide plate 1 is fixed, and the guide plate 1 can be fixed more firmly; when the air bag 4 is inflated, the plug block 6 is pulled out of the through hole, the syringe needle or gas inlet pipe is inserted into the gas inlet hole 9 for inflation, so that air enters the air bag 4, the air bag 4 expands towards the eyeball, and the sclera wall is pressed to form a pad effect, the retina and choroid in the sclera wall form a ridge due to external pressure, which helps to close the hole, and then the retina is reset, by controlling the inflation of the air bag 4, the expansion volume of the air bag 4 is adjusted, and then the pressure depth is effectively controlled, so as to avoid poor closure of the intraocular hole due to insufficient pressure depth; after inflation is completed, the plug block 6 is clamped by the surgical forceps, the syringe needle or gas inlet pipe is pulled out, and the plug block 6 is pushed into the through hole, so that the plug block 6 is deformed and the gas inlet hole 9 is closed and sealed, the reset pad 2 covers the plug block 6, and the sealing layer 3 is pasted to seal the gap, so as to prevent the air in the air bag 4 from leaking, which can effectively improve the surgical effect and success rate.

Claims

1. An inflatable scleral explant pad device comprising a guide plate (1), characterized in that: The side wall of the guide plate (1) is provided with a plurality of positioning grooves (10) for clamping suture lines, the guide plate (1) is fixed with an air bag (4) towards the direction of the eyeball, the guide plate (1) is provided with a through hole communicating with the air bag (4), the through hole is independently provided with a plug (6), the plug (6) is provided with a gas conveying hole (9) for communicating inside and outside of the air bag (4), a sealing sleeve (5) is sleeved on a section of the plug (6) in the air bag (4), the two ends of the sealing sleeve (5) are fixed on the plug (6) and the guide plate (1) respectively, a sealing assembly for sealing the gas conveying hole (9) is arranged between the guide plate (1) and the plug (6), and a positioning assembly for positioning the moved plug (6) is arranged between the guide plate (1) and the plug (6).

2. An inflatable extra-scleral padding device according to claim 1, characterized in that: The sealing assembly comprises a reset pad (2), the cross section of the plug (6) is isosceles trapezoidal structure, the smaller end of the plug (6) faces the air bag (4), the hole wall of the through hole is inclined to match the slope of the plug (6), the surface of the guide plate (1) away from the air bag (4) is provided with a groove, the reset pad (2) is located in the groove, one end of the reset pad (2) is fixed on the groove wall, and a sealing layer (3) is arranged between the reset pad (2) and the groove bottom.

3. An inflatable extra-scleral padding device according to claim 1, characterized in that: The positioning assembly comprises two clamping blocks (7), the two clamping blocks (7) are fixed on the two opposite side walls of the plug (6) respectively, and the hole wall of the through hole is provided with a clamping groove for clamping the clamping block (7).

4. An inflatable extra-scleral padding device according to claim 3, characterized in that: The plug (6) is made of elastic material.

5. An inflatable extra-scleral padding device according to claim 1, characterized in that: The guide plate (1) and the air bag (4) are made of elastic material.

6. An inflatable extra-scleral padding device according to claim 1, characterized in that: The sealing sleeve (5) is made of elastic material.

7. An inflatable extra-scleral padding device according to claim 1, characterized in that: The gas conveying hole (9) is an oval hole.

8. An inflatable extra-scleral padding device according to claim 1, characterized in that: The guide plate (1) is in arc structure.

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