Preparation device and preparation method of silica gel sponge strip for posterior sclera reinforcement

Abstract

The invention relates to the technical field of medical instruments, in particular to a preparation device and a preparation method of a silica gel sponge strip for posterior sclera reinforcement. Comprising a glue injection robot, 3D printing equipment, a glue injection platform and sponge strip preparation equipment, the glue injection robot is arranged behind the glue injection platform, the 3D printing equipment and the sponge strip preparation equipment are arranged on the two sides of the glue injection robot correspondingly, and the 3D printing equipment, the sponge strip preparation equipment and the glue injection robot are all connected with a control computer. According to the device and method, the silica gel sponge strip can be customized according to the eyeball form of a patient, the operation effect is improved, meanwhile, the silica gel material is used for ophthalmologic operations for many years, rejection reaction is low, safety is high, the antibacterial performance is excellent, and the postoperative infection risk is reduced. The preparation method is mainly applied to preparation of the silica gel sponge strip for reinforcing the posterior sclera.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically to a device and a method for preparing a silicone sponge strip for reinforcing the posterior sclera. Background Art

[0002] Posterior scleral reinforcement surgery is a key procedure for treating degenerative eye diseases such as high myopia and posterior scleral staphyloma. Its core is to enhance the mechanical strength of the posterior sclera by implanting biocompatible materials and inhibit abnormal growth of the eye axis.

[0003] At present, there are several prominent difficulties in the implementation of posterior scleral reinforcement surgery: Limited supply of surgical materials: Currently, the commonly used material for posterior scleral reinforcement surgery is allogeneic sclera, which has limited sources and is difficult to meet clinical needs; non-adjustable morphology: Allogeneic sclera cannot be personalized according to the patient's eye shape, limiting the surgical effect; rejection reaction: Allogeneic materials may induce immune rejection reactions, or are not sterilized enough, increasing the risk of surgical complications; insufficient mechanical properties: The mechanical properties of existing materials (such as elastic modulus, tensile strength) are less compatible with scleral tissue, affecting the surgical effect. Summary of the invention

[0004] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a device for preparing silicone sponge strips for posterior sclera reinforcement and a preparation method thereof. The device and method can customize the silicone sponge strips according to the patient's eye shape to improve the surgical effect. At the same time, silicone materials have been used in ophthalmic surgery for many years, with low rejection reaction, high safety, excellent antibacterial properties, and reduced the risk of postoperative infection.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A device for preparing a silicone sponge strip for reinforcing the posterior sclera comprises a glue injection robot, a 3D printing device, a glue injection platform and a sponge strip preparation device, wherein the glue injection robot is arranged behind the glue injection platform, the 3D printing device and the sponge strip preparation device are respectively arranged on both sides of the glue injection robot, and the 3D printing device, the sponge strip preparation device and the glue injection robot are all connected to a control computer.

[0006] The glue injection platform includes a glue injection base frame, a glue injection table and a glue injection box. The glue injection table is fixedly arranged on the glue injection base frame, the glue injection table is horizontally arranged, and the glue injection box is fixedly arranged on the glue injection table. The glue injection box adopts a rectangular box structure with an open top, and a mold clamping assembly and a mold sealing assembly are arranged in the glue injection box.

[0007] The mold clamping assembly includes a groove, a clamping motor, a bidirectional lead screw, a sliding block and a clamping plate. The groove is opened on the inner bottom surface of the injection box, the clamping motor is arranged in the groove, the output end of the clamping motor is connected to the bidirectional lead screw, and the sliding block is symmetrically arranged in two groups at both ends of the bidirectional lead screw. The sliding block is threadedly connected to the bidirectional lead screw, the bottom of the sliding block is fitted with the bottom of the groove, and the clamping plate is fixedly arranged on the top of the sliding block.

[0008] The mold sealing assembly includes a fixed top plate, a sealing motor, a sealing screw, a movable sealing plate and a limiting slide groove, the fixed top plate and the movable sealing plate are respectively arranged on both sides of the groove, the fixed top plate and the movable sealing plate are both arranged parallel to the groove, the fixed top plate is fixedly arranged on the inner bottom surface of the injection box, the sealing motor is fixedly arranged on the side of the movable sealing plate away from the fixed top plate, the output end of the sealing motor is connected with the sealing screw, a threaded hole matching the sealing screw is opened on the movable sealing plate, the movable sealing plate is threadedly connected with the sealing screw through the threaded hole, the limiting slide groove is opened on the bottom surface of the injection box, the limiting slide groove is arranged parallel to the sealing screw, and the end of the movable sealing plate away from the sealing screw is slidably arranged in the limiting slide groove.

[0009] A silica gel raw material storage rack is arranged on one side of the glue injection table.

[0010] The 3D printing device comprises a printer chassis and a 3D printer. The printer chassis is fixedly arranged on the ground, and the 3D printer is fixedly arranged on the printer chassis.

[0011] The 3D printer is provided with a printer cover on the outside. The printer cover is a cylindrical transparent shell. A material taking door is provided on the printer cover.

[0012] The glue injection robot comprises a robot chassis, a glue injection mechanical arm and a glue injection head. The robot chassis is fixedly arranged on the ground, the glue injection mechanical arm is fixedly arranged on the robot chassis, and the glue injection head is arranged at the front end of the glue injection mechanical arm.

[0013] The glue injection head includes a glue injection nozzle and a silicone feeding box. The silicone feeding box is fixedly arranged at the front end of the glue injection mechanical arm. The glue injection nozzle is arranged at the bottom of the silicone feeding box and is connected to the silicone feeding box. An infrared locator is also arranged at the bottom of the silicone feeding box. A method for preparing a device for preparing a silicone sponge strip for reinforcing the posterior sclera comprises the following steps: S1. Obtain the three-dimensional data of the New Zealand rabbit eyeball by scanning with a CT scanner, and perform three-dimensional reconstruction using Mimics software; S2, control the computer to design the shape of the silicone sponge strip, and use the 3D printing equipment to print out the injection mold; S3, manually placing the printed injection mold in the injection box, fixing the injection mold in the injection box by the mold clamping assembly and the mold sealing assembly, and sealing the two ends of the injection mold by using the fixed top plate and the movable sealing plate; S4. The glue injection robot arm is controlled by a control computer, and the injection line is accurately designed by an infrared positioning device. The silicone material is injected into the injection mold by a glue injection robot, and then the injection mold is transferred to the sponge strip preparation equipment. After cross-linking, curing and freeze-drying, the silicone sponge strip is prepared.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Through the integrated application of CT scanning and three-dimensional reconstruction technology, precise and personalized adaptation of silicone sponge strips is achieved. CT scanners can obtain high-precision three-dimensional data of the eyeball. Combined with the reconstruction function of Mimics software, the morphological parameters of the sponge strips can be designed according to the individual needs of patients, so that the finished product is highly matched with the anatomical structure of the posterior sclera, effectively improving surgical adaptability and treatment effects. The introduction of 3D printing technology further guarantees the morphological accuracy of the mold. Its transparent cover design and the setting of the material extraction door not only ensure the cleanliness of the printing environment, but also facilitate real-time observation and extraction by operators, significantly improving the efficiency of mold preparation; The mold clamping assembly achieves synchronous clamping through bidirectional lead screw drive, and cooperates with the linear moving sealing structure of the movable sealing plate to form a completely closed injection cavity, effectively preventing silicone leakage. The combination of infrared positioning instrument and injection path planning enables injection accuracy to reach sub-millimeter level, ensuring uniform distribution of silicone in complex molds and significantly reducing the defective rate; The device and method can customize silicone sponge strips according to the patient's eye shape to improve the surgical effect. At the same time, silicone materials have been used in ophthalmic surgery for many years, with low rejection reactions, high safety, excellent antibacterial properties, and reduced the risk of postoperative infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 A top view of the present invention; Figure 4 This is a schematic diagram of the interior of the glue injection box of the present invention; Figure 5 It is a side perspective view of the glue injection box; Figure 6 It is a schematic diagram of the glue injection head in the present invention; In the figure: 1 is a glue injection robot, 2 is a printer chassis, 3 is a 3D printer, 4 is a printer cover, 5 is a material taking door, 6 is a glue injection chassis, 7 is a glue injection table, 8 is a silicone raw material storage rack, 9 is a glue injection box, 10 is a groove, 11 is a clamping motor, 12 is a bidirectional screw, 13 is a sliding block, 14 is a clamping plate, 15 is a fixed top plate, 16 is a blocking motor, 17 is a blocking screw, 18 is a movable blocking plate, 19 is a limiting slide, 20 is a glue injection mold, 21 is a sponge strip preparation device, 22 is a robot chassis, 23 is a glue injection robotic arm, 24 is a glue injection head, 25 is a glue injection nozzle, 26 is a silicone feeding box, and 27 is an infrared locator. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from the description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figures 1 to 6 As shown, a device for preparing a silicone sponge strip for posterior sclera reinforcement includes a glue injection robot 1, a 3D printing device, a glue injection platform and a sponge strip preparation device 21. The glue injection robot 1 is arranged behind the glue injection platform, and the 3D printing device and the sponge strip preparation device 21 are respectively arranged on both sides of the glue injection robot 1. The 3D printing device, the sponge strip preparation device 21 and the glue injection robot 1 are all connected to a control computer.

[0019] The required three-dimensional data is obtained through a CT scanner, and three-dimensional reconstruction is performed using a control computer. The control computer controls the 3D printing equipment to print out a glue injection mold 20 based on the reconstructed information, which involves the shape of the silicone sponge strip. The printed glue injection mold 20 is placed on a glue injection platform and the glue injection robot 1 performs the glue injection operation. After the glue injection is completed, the glue injection mold 20 injected with silicone is placed in a sponge strip preparation device 21 to prepare a finished sponge strip.

[0020] Preferably, the glue injection platform includes a glue injection base frame 6, a glue injection table 7 and a glue injection box 9. The glue injection table 7 is fixedly arranged on the glue injection base frame 6, and the glue injection table 7 is arranged horizontally. The glue injection box 9 is fixedly arranged on the glue injection table 7. The glue injection box 9 adopts a rectangular box structure with an open top, and a mold clamping component and a mold blocking component are arranged in the glue injection box 9. The glue injection table 7 can adjust the horizontal height on the glue injection base frame 6 to adapt to operators of different heights.

[0021] Preferably, the mold clamping assembly includes a groove 10, a clamping motor 11, a bidirectional lead screw 12, a sliding block 13 and a clamping plate 14. The groove 10 is opened on the inner bottom surface of the injection box 9. The clamping motor 11 is arranged in the groove 10. The output end of the clamping motor 11 is connected to the bidirectional lead screw 12. The sliding block 13 is symmetrically arranged in two groups at both ends of the bidirectional lead screw 12. The sliding block 13 is threadedly connected to the bidirectional lead screw 12. The bottom of the sliding block 13 is in contact with the bottom of the groove 10. The clamping plate 14 is fixedly arranged on the top of the sliding block 13. When the clamping motor 11 is started, the clamping plate 14 moves inward synchronously under the action of the bidirectional lead screw 12 and the sliding blocks 13 on both sides to clamp and fix the injection mold 20.

[0022] Preferably, the mold sealing assembly includes a fixed top plate 15, a sealing motor 16, a sealing screw 17, a movable sealing plate 18 and a limiting slide 19, the fixed top plate 15 and the movable sealing plate 18 are respectively arranged on both sides of the groove 10, the fixed top plate 15 and the movable sealing plate 18 are both arranged parallel to the groove 10, the fixed top plate 15 is fixedly arranged on the inner bottom surface of the injection box 9, the sealing motor 16 is fixedly arranged on the side of the movable sealing plate 18 away from the fixed top plate 15, the output end of the sealing motor 16 is connected to the sealing screw 17, the movable sealing plate 18 is provided with a threaded hole matching the sealing screw 17, the movable sealing plate 18 is threadedly connected to the sealing screw 17 through the threaded hole, the limiting slide 19 is opened on the bottom surface of the injection box 9, the limiting slide 19 is arranged parallel to the sealing screw 17, and the end of the movable sealing plate 18 away from the sealing screw 17 is slidably arranged in the limiting slide 19. The blocking motor 16 is started, and under the action of the blocking screw 17, the movable blocking plate 18 is driven to move toward the fixed top plate 15. The movable blocking plate 18 is provided with an extension portion that extends into the limiting slide groove 19, thereby ensuring that the movable blocking plate 18 moves in a straight line.

[0023] The two sides of the glue injection groove in the glue injection mold 20 are open structures. Under the clamping of the fixed top plate 15 and the movable blocking plate 18, the openings on both sides are blocked to form a glue injection cavity with two sides closed.

[0024] Preferably, a silicone raw material storage rack 8 is provided on one side of the glue injection table 7, and the silicone raw material to be used can be placed in the silicone raw material storage rack 8 for easy access.

[0025] Preferably, the 3D printing device includes a printer chassis 2 and a 3D printer 3 , wherein the printer chassis 2 is fixedly arranged on the ground, and the 3D printer 3 is fixedly arranged on the printer chassis 2 .

[0026] Preferably, a printer cover 4 is disposed outside the 3D printer 3 . The printer cover 4 is a cylindrical transparent shell, and a material taking door 5 is provided on the printer cover 4 .

[0027] Preferably, the glue injection robot 1 includes a robot chassis 22 , a glue injection mechanical arm 23 and a glue injection head 24 . The robot chassis 22 is fixedly arranged on the ground, the glue injection mechanical arm 23 is fixedly arranged on the robot chassis 22 , and the glue injection head 24 is arranged at the front end of the glue injection mechanical arm 23 .

[0028] Preferably, the glue injection head 24 includes a glue injection nozzle 25 and a silicone feeding box 26. The silicone feeding box 26 is fixedly arranged at the front end of the glue injection robot arm 23. The glue injection nozzle 25 is arranged at the bottom of the silicone feeding box 26 and is connected to the silicone feeding box 26. An infrared locator 27 is also arranged at the bottom of the silicone feeding box 26.

[0029] Confirm that the 3D printing equipment, the glue injection platform, the glue injection robot 1 and the sponge strip preparation equipment 21 are powered on, start the control computer, and ensure that all devices are interconnected through the software. According to the height of the operator, adjust the glue injection table 7 on the glue injection chassis 6 to an appropriate height to ensure horizontal placement, check whether the mold clamping assembly and the sealing assembly in the glue injection box 9 are reset, and clean up the residue. Store the silicone raw material in the silicone raw material storage rack 8 on the side of the glue injection table 7 to ensure that the glue injection robot 1 can be easily accessed.

[0030] Place the New Zealand rabbit in a CT scanner, start the scanning program to obtain high-precision three-dimensional data of the eyeball, use the Mimics software of the control computer to perform three-dimensional reconstruction of the scanned data to generate an eyeball model, and design the morphological parameters of the silicone sponge strip in the control computer based on the reconstructed model. Open the material taking door 5 of the 3D printer housing 4, clean the printing platform, confirm the mold design parameters in the control computer, select the appropriate material, start the 3D printer 3, and after printing is completed, take out the injection mold 20 from the printer housing 4 to check the surface finish and dimensional accuracy. Place the glue injection mold 20 horizontally in the glue injection box 9, start the clamping motor 11, drive the clamping plate 14 to move inward synchronously through the bidirectional screw 12 to clamp the mold, start the blocking motor 16, drive the movable blocking plate 18 to move toward the fixed top plate 15, block the two ends of the mold, set the glue injection path through the control computer, start the infrared locator 27 of the glue injection robot 23, calibrate the relative position of the glue injection nozzle 25 and the mold glue injection port, and the glue injection robot 23 draws raw materials from the silicone feeding box 26 and injects them into the mold evenly along the preset path until the filling is completed.

[0031] After the injection is completed, the mold clamping and sealing components are released, and the injection mold 20 is transferred to the sponge strip preparation equipment 21, and the cross-linking program of the sponge strip preparation equipment 21 is started to allow the silica gel material to be fully cross-linked and solidified, and freeze-dried to remove residual moisture to obtain the final silica gel sponge strip product.

[0032] A method for preparing a device for preparing a silicone sponge strip for reinforcing the posterior sclera comprises the following steps: S1. Obtain the three-dimensional data of the New Zealand rabbit eyeball by scanning with a CT scanner, and perform three-dimensional reconstruction using Mimics software; S2, controlling the computer to design the shape of the silicone sponge strip, and using a 3D printing device to print out a glue injection mold 20; S3, manually placing the printed injection mold 20 in the injection box 9, fixing the injection mold 20 in the injection box 9 by the mold clamping assembly and the mold blocking assembly, and blocking both ends of the injection mold 20 by using the fixed top plate 15 and the movable blocking plate 18; S4. The glue injection robot 23 is controlled by a control computer, and the infrared positioning device 27 accurately designs the glue injection line. The glue injection robot 1 is used to inject the silicone material into the glue injection mold 20, and then the glue injection mold is transferred to the sponge strip preparation equipment 21. After cross-linking, curing and freeze-drying, the silicone sponge strip is prepared.

[0033] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A device for preparing a silicone sponge strip for posterior sclera reinforcement, characterized in that: The invention comprises a glue injection robot (1), a 3D printing device, a glue injection platform and a sponge strip preparation device (21), wherein the glue injection robot (1) is arranged behind the glue injection platform, the 3D printing device and the sponge strip preparation device (21) are arranged on both sides of the glue injection robot (1), respectively, and the 3D printing device, the sponge strip preparation device (21) and the glue injection robot (1) are all connected to a control computer.

2. The device for preparing a silicone sponge strip for posterior sclera reinforcement according to claim 1, characterized in that: The glue injection platform comprises a glue injection base frame (6), a glue injection table (7) and a glue injection box (9); the glue injection table (7) is fixedly arranged on the glue injection base frame (6); the glue injection table (7) is arranged horizontally; the glue injection box (9) is fixedly arranged on the glue injection table (7); the glue injection box (9) adopts a rectangular box structure with an open top; a mold clamping component and a mold sealing component are arranged inside the glue injection box (9).

3. The device for preparing a silicone sponge strip for posterior sclera reinforcement according to claim 2, characterized in that: The mold clamping assembly comprises a groove (10), a clamping motor (11), a bidirectional lead screw (12), a sliding block (13) and a clamping plate (14); the groove (10) is opened on the inner bottom surface of the injection box (9); the clamping motor (11) is arranged in the groove (10); the output end of the clamping motor (11) is connected to the bidirectional lead screw (12); two groups of sliding blocks (13) are symmetrically arranged at both ends of the bidirectional lead screw (12); the sliding block (13) is threadedly connected to the bidirectional lead screw (12); the bottom of the sliding block (13) is in contact with the bottom of the groove (10); and the clamping plate (14) is fixedly arranged on the top of the sliding block (13).

4. The device for preparing a silicone sponge strip for posterior sclera reinforcement according to claim 3, characterized in that: The mold plugging assembly comprises a fixed top plate (15), a plugging motor (16), a plugging screw (17), a movable plugging plate (18) and a limiting slide groove (19); the fixed top plate (15) and the movable plugging plate (18) are respectively arranged on both sides of the groove (10); the fixed top plate (15) and the movable plugging plate (18) are both arranged parallel to the groove (10); the fixed top plate (15) is fixedly arranged on the inner bottom surface of the injection box (9); the plugging motor (16) is fixedly arranged on the movable plugging plate (18) away from the fixed top plate On one side of the injection box (9), the output end of the blocking motor (16) is connected to the blocking screw (17), a threaded hole matching the blocking screw (17) is provided on the movable blocking plate (18), the movable blocking plate (18) is threadedly connected to the blocking screw (17) through the threaded hole, a limiting slide groove (19) is provided on the bottom surface of the injection box (9), the limiting slide groove (19) is arranged parallel to the blocking screw (17), and the end of the movable blocking plate (18) away from the blocking screw (17) is slidably arranged in the limiting slide groove (19).

5. The device for preparing a silicone sponge strip for reinforcing the posterior sclera according to claim 4, characterized in that: A silica gel raw material storage rack (8) is provided on one side of the glue injection table (7).

6. The device for preparing a silicone sponge strip for reinforcing the posterior sclera according to claim 1, characterized in that: The 3D printing device comprises a printer chassis (2) and a 3D printer (3), wherein the printer chassis (2) is fixedly arranged on the ground, and the 3D printer (3) is fixedly arranged on the printer chassis (2).

7. The device for preparing a silicone sponge strip for posterior sclera reinforcement according to claim 6, characterized in that: The 3D printer (3) is provided with a printer housing (4) on the outside. The printer housing (4) is a cylindrical transparent shell. A material taking door (5) is provided on the printer housing (4).

8. The device for preparing a silicone sponge strip for reinforcing the posterior sclera according to claim 1, characterized in that: The glue injection robot (1) comprises a robot base frame (22), a glue injection mechanical arm (23) and a glue injection head (24); the robot base frame (22) is fixedly arranged on the ground; the glue injection mechanical arm (23) is fixedly arranged on the robot base frame (22); and the glue injection head (24) is arranged at the front end of the glue injection mechanical arm (23).

9. The device for preparing a silicone sponge strip for reinforcing the posterior sclera according to claim 8, characterized in that: The glue injection head (24) comprises a glue injection nozzle (25) and a silica gel feeding box (26). The silica gel feeding box (26) is fixedly arranged at the front end of the glue injection mechanical arm (23). The glue injection nozzle (25) is arranged at the bottom of the silica gel feeding box (26) and is connected to the silica gel feeding box (26). An infrared locator (27) is also arranged at the bottom of the silica gel feeding box (26).

10. A method for preparing a device for preparing a silicone sponge strip for reinforcing the posterior sclera using any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Obtain the three-dimensional data of the New Zealand rabbit eyeball by scanning with a CT scanner, and perform three-dimensional reconstruction using Mimics software; S2, controlling the computer to design the shape of the silicone sponge strip, and using a 3D printing device to print out a glue injection mold (20); S3, manually placing the printed injection mold (20) in the injection box (9), fixing the injection mold (20) in the injection box (9) by means of a mold clamping assembly and a mold sealing assembly, and sealing both ends of the injection mold (20) by means of a fixed top plate (15) and a movable sealing plate (18); S4. The injection robot arm (23) is controlled by a control computer, and the injection line is accurately designed by an infrared positioning device (27). The silicone material is injected into the injection mold (20) by using the injection robot (1), and then the injection mold is transferred to the sponge strip preparation device (21). After cross-linking, curing and freeze-drying, the silicone sponge strip is prepared.

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