A micro-amniotic ring drilling device for macular hole surgery

Abstract

The present application relates to the field of biomedical technology, and more particularly to a micro-amniotic ring drilling device for macular hole surgery. The device comprises a bearing shell, a ring-shaped array of blades is slidably connected to one side of the bearing shell, and the ring-shaped array of blades will not exceed the adjacent side of the bearing shell when fully extended. A power assembly is arranged in the bearing shell to drive the movement of the ring-shaped array of blades. A support assembly is arranged in the bearing shell to temporarily support the surgical site. Two ring-shaped inclined plates and two ring-shaped guide plates are fixed to one side of the bearing shell near the ring-shaped array of blades. The ring-shaped array structure formed by multiple blades forms a standardized cutting profile, ensuring that the size of the amniotic membrane obtained each time is within the predetermined range and the shape is regular, thereby avoiding the problem of unstable quality caused by existing operation differences.

Description

Technical Field

[0001] This invention relates to the field of biomedical technology, and in particular to a miniature amniotic trephine device for macular hole surgery. Background Technology

[0002] Macular holes and related retinal detachment are serious complications of posterior pole tractional lesions in high myopia. Surgical treatment is challenging, and the retinal reattachment rate and hole closure rate are core clinical concerns. In recent years, amniotic membrane transplantation has become an effective treatment for refractory macular holes due to its good biocompatibility and ability to promote tissue repair. The amnion is the innermost layer of the fetal membranes, located inside the chorion and facing the amniotic fluid cavity. Its tissue is thin and elastic, with a smooth, translucent surface, and it lacks blood vessels, nerves, and lymphatic vessels. The amnion possesses anti-inflammatory, anti-scarring, and tissue repair / epithelial regeneration-promoting biological properties, and has low immunogenicity, resulting in relatively rare rejection reactions in clinical applications. Common amniotic membrane transplantation methods for treating macular holes include covering and tamponade.

[0003] In this type of surgery, the amniotic membrane, used as a transplant material, usually needs to be cut to the required size and shape by the surgeon during the operation. The currently commonly used manual cutting method has the following significant drawbacks: Difficulty in controlling size and shape: Manual operation makes it difficult to ensure the consistency of amniotic membrane diameter and the regularity of edges, which can easily lead to uneven morphology of transplanted materials; Impact on surgical rhythm: The cutting process is cumbersome and time-consuming, which can easily disrupt the continuity of the surgery, prolong the overall operation time, and increase the risk to the patient. Summary of the Invention

[0004] To address the problems mentioned in the background section, the present invention provides a miniature amniotic trephine device for macular hole surgery.

[0005] The technical solution of the present invention is as follows: a miniature amniotic trephine device for macular hole surgery, comprising a support shell, wherein a ring array of blades is slidably connected to one side of the support shell, the ring array of blades, when fully extended, will not exceed the adjacent side of the support shell, a power component for moving the ring array of blades is provided inside the support shell, a support component for temporarily supporting the surgical position is provided inside the support shell, and two annular inclined plates and two annular guide plates are fixedly connected to one side of the support shell near the ring array of blades, the ring array of blades sliding between the two annular inclined plates and the two annular guide plates.

[0006] Furthermore, the two annular guide plates have hook-shaped cross-sections to guide the blades distributed in an annular array.

[0007] Furthermore, the power assembly includes a first power transmission component, which is fixedly connected to the side of the bearing shell near the annular inclined plate. A second power transmission component is fixedly connected to the side of the bearing shell away from the annular inclined plate. The second power transmission component and the first power transmission component are connected by a connecting pipe. A sliding block, which is fixedly connected to the telescopic part of the second power transmission component, is slidably connected to the side of the bearing shell away from the annular inclined plate. A connecting rod is fixedly connected to the telescopic part of the first power transmission component. A U-shaped frame is fixedly connected to the side of the connecting rod away from the first power transmission component. A rotating shell is provided on the side of the bearing shell near the first power transmission component. The rotating shell is fixedly connected to the side of the blades distributed in the annular array away from the annular inclined plate.

[0008] Furthermore, several inclined elastic ropes are fixedly connected to the side of the bearing shell near the annular inclined plate, and the side of several elastic ropes away from the bearing shell is fixedly connected to the rotating shell.

[0009] Furthermore, at least two fixed rods are fixedly connected to the side of the bearing shell near the rotating shell. The rotating shell is located between the elastic rope and the fixed rods. The rotating shell is provided with at least two sliding grooves, each corresponding to one of the fixed rods. The fixed rods slide along the corresponding sliding grooves.

[0010] Furthermore, the support assembly includes an L-shaped frame, which is fixedly connected to the side of the bearing shell near the rotating shell. A fixed seat is fixedly connected to the side of the L-shaped frame away from the rotating shell. A ring array of swing rods is hinged to the fixed seat. The ring inclined plate near the ring guide plate is used to limit the swing range of the ring array of swing rods. An elastic membrane is fixedly connected between two adjacent swing rods.

[0011] Furthermore, the inner sides of the swing rods distributed in a circular array are all hinged with hinge rods, and the opposing sides of the hinge rods distributed in the circular array are all hinged with hinge seats that slide along the L-shaped frame. The connecting rod is slidably connected to a sliding frame that is fixed to the hinge seat, and a spring sleeved on the connecting rod is fixed between the sliding frame and the U-shaped frame.

[0012] Furthermore, the connecting rod is fixedly connected to a sliding plate, and an airbag for tightly fitting the bearing shell is fixedly connected to the outside of the sliding plate.

[0013] Furthermore, an annular cavity is provided on the side of the bearing shell near the sliding plate, and the annular cavity is located between the rotating shell and the first power transmission component.

[0014] Furthermore, a sliding shell is slidably connected to the side of the supporting shell near the rotating shell, the airbag is located between the sliding shell and the rotating shell, the sliding plate is used to squeeze the sliding shell, and a protective film is fixedly connected between the interior of the sliding shell and the adjacent side of the supporting shell.

[0015] The beneficial effects of the present invention are as follows: The present invention utilizes a ring array structure composed of multiple blades to form a standardized cutting profile, ensuring that the size of the amniotic membrane slices obtained each time is within a predetermined range and the shape is regular, thereby avoiding the quality instability problem caused by existing operational differences. By opening all the hinge rods, all the elastic membranes generate progressive contact force during the unfolding process, thereby gradually stretching the part that needs to be cut out, reducing the risk of tearing, and enhancing the predictability and safety of the surgical procedure. By coordinating the movement of the sliding plate and the airbag, a negative pressure extraction environment is created inside the support shell, causing the amniotic membrane to adhere tightly to the outer surface of all elastic membranes and the outer surface of the upper annular inclined plate, maintaining the flatness of the amniotic membrane sheet during the cutting process. On this basis, all blades rotate while being fed axially, achieving continuous, low-resistance cutting of the amniotic membrane. This not only improves the regularity and consistency of the cut edges, but also reduces cutting deviations caused by tissue loosening or local deformation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is an exploded view of the three-dimensional structure of the protective film of the present invention; Figure 3 This is a three-dimensional structural cross-sectional view of the bearing shell of the present invention; Figure 4 This is a three-dimensional structural diagram showing the positional relationship of the sliding plates in this invention; Figure 5 This is a three-dimensional structural diagram showing the positional relationship of the rotating shell of the present invention; Figure 6 This is a three-dimensional structural diagram of the fixed base and the swing rod of the present invention; Figure 7 This is a three-dimensional structural cross-sectional view of the mounting positions of the bearing shell and the blade in this invention; Figure 8 This is a three-dimensional structural diagram illustrating the positional relationship of the sliding blocks in this invention; Figure 9 This is a three-dimensional structural diagram showing the positional relationship between the hinge rod and the hinge seat of the present invention; Figure 10 This is an exploded three-dimensional view of the hinge seat and sliding frame of the present invention.

[0017] The labels in the diagram are as follows: 1-Bearing shell, 2-Blade, 3-Annular inclined plate, 4-Annular guide plate, 5-First power transmission component, 6-Second power transmission component, 7-Sliding block, 8-Connecting rod, 801-U-shaped frame, 9-Rotating shell, 10-Elastic rope, 11-Fixing rod, 12-Slide groove, 13-L-shaped frame, 14-Fixing seat, 15-Swing rod, 16-Elastic membrane, 17-Hinge rod, 18-Hinge seat, 19-Sliding frame, 21-Sliding plate, 22-Airbag, 23-Annular cavity, 26-Sliding shell, 27-Protective membrane. Detailed Implementation

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] To address the problem that existing manual cutting methods cannot guarantee consistent amniotic membrane size and regular edges, which affects implant quality and disrupts the surgical rhythm due to time-consuming operations, thus prolonging the total surgical time, this invention uses a ring array structure composed of multiple blades 2 to form a standard cutting contour. This ensures that the size of each amniotic membrane cut is kept within a controllable range and the shape is regular, thereby overcoming the quality fluctuations caused by human factors in traditional manual cutting.

[0020] Example 1: A miniature amniotic trephine device for macular hole surgery, such as Figures 1-7 As shown, the device includes a support shell 1, with a ring array of blades 2 slidably connected to one side of the support shell 1. When the ring array of blades 2 is fully extended, it will not exceed the adjacent side of the support shell 1. A power component for moving the ring array of blades 2 is provided inside the support shell 1. A support component for temporarily supporting the surgical position is provided inside the support shell 1. Two annular inclined plates 3 and two annular guide plates 4 are fixedly connected to the side of the support shell 1 near the ring array of blades 2. The ring array of blades 2 slides between the two annular inclined plates 3 and the two annular guide plates 4. The cross-section of the two annular guide plates 4 is hook-shaped to guide the ring array of blades 2.

[0021] In the above scheme, the blade 2 is made of strip steel, and all blades 2 can slide up and down within the bearing shell 1 while also sliding circumferentially. Figure 4For example, viewed from front to back, the projection of blade 2 is L-shaped, and the width of the upper and lower sides of blade 2 is smaller than the width of the middle part. By distributing blades 2 in a ring array to form a ring-shaped cutting head, the size of the cut amniotic membrane sheet is kept within a controllable range, thereby avoiding quality instability caused by existing operational differences. Two ring-shaped inclined plates 3 are located above two ring-shaped guide plates 4, and all blades 2 are sandwiched between the two ring-shaped inclined plates 3 and between the two ring-shaped guide plates 4.

[0022] like Figures 3-6 and Figure 8 As shown, the power assembly includes a first power transmission component 5, which is fixedly connected to the side of the bearing shell 1 near the annular inclined plate 3. A second power transmission component 6 is fixedly connected to the side of the bearing shell 1 away from the annular inclined plate 3. The second power transmission component 6 and the first power transmission component 5 are connected by a connecting pipe. A sliding block 7, which is fixedly connected to the telescopic part of the second power transmission component 6, is slidably connected to the side of the bearing shell 1 away from the annular inclined plate 3. A connecting rod 8 is fixedly connected to the telescopic part of the first power transmission component 5. A U-shaped frame 801 is fixedly connected to the side of the connecting rod 8 away from the first power transmission component 5. A rotating shell 9 is provided in the bearing shell 1 near the first power transmission component 5. The rotating shell 9 is fixedly connected to the side of the annular array distributed blades 2 away from the annular inclined plate 3.

[0023] In the above scheme, the second power transmission component 6 and the first power transmission component 5 are existing hydraulic transmission components. In actual use, the cross-sectional area of ​​the two can be adjusted so that the cross-sectional area of ​​the second power transmission component 6 is smaller than the cross-sectional area of ​​the first power transmission component 5, thereby achieving the effect of reducing the stroke and enhancing the stability during the working process.

[0024] like Figure 5 As shown, several inclined elastic ropes 10 are fixedly connected to the side of the bearing shell 1 near the annular inclined plate 3. The side of the elastic ropes 10 away from the bearing shell 1 is fixedly connected to the rotating shell 9. At least two fixed rods 11 are fixedly connected to the side of the bearing shell 1 near the rotating shell 9. The rotating shell 9 is located between the elastic ropes 10 and the fixed rods 11. The rotating shell 9 is provided with at least two sliding grooves 12. The sliding grooves 12 correspond one-to-one with the fixed rods 11. The fixed rods 11 slide along the corresponding sliding grooves 12.

[0025] In the above scheme, the slide 12 is composed of an inclined groove and a straight groove connected to each other. The inclined groove is located on the upper side of the straight groove. When the straight groove contacts the fixed rod 11, it causes the rotating shell 9 to move vertically. When the inclined groove contacts the fixed rod 11, the rotating shell 9 moves vertically and rotates at the same time.

[0026] like Figure 5 , Figure 6 , Figure 9 and Figure 10As shown, the support assembly includes an L-shaped frame 13, which is fixed inside the bearing shell 1 on the side near the rotating shell 9. A fixed seat 14 is fixed on the side of the L-shaped frame 13 away from the rotating shell 9. A ring array of swing rods 15 is hinged to the fixed seat 14. An annular inclined plate 3 near the annular guide plate 4 is used to limit the swing range of the ring array of swing rods 15. An elastic membrane 16 is fixed between two adjacent swing rods 15.

[0027] In the above scheme, when the swing rods 15 distributed in the ring array swing to their limit position, the back side of the swing rods 15 distributed in the ring array contacts the lower ring inclined plate 3. After all the swing rods 15 are fully extended, the back side of all the elastic membranes 16 does not contact the lower ring inclined plate 3, so as to achieve the effect of not sealing the upper part of the bearing shell 1.

[0028] like Figure 5 , Figure 6 and Figure 9 As shown, the inner side of the circular array distributed swing rod 15 is hinged with a hinge rod 17, and the opposing sides of the circular array distributed hinge rod 17 are hinged with a hinge seat 18 that slides along the L-shaped frame 13. The connecting rod 8 is slidably connected to a sliding frame 19 that is fixed to the hinge seat 18. A spring sleeved on the connecting rod 8 is fixed between the sliding frame 19 and the U-shaped frame 801.

[0029] In the above scheme, as the sliding frame 19 moves downward, it pulls the hinge rod 17 through the hinge seat 18, so that the hinge rod 17 supports the swing rod 15. During the process of the swing rod 15 being supported, all the elastic membranes 16 generate a progressive contact force during the unfolding process, thereby gradually stretching the part that needs to be cut out, reducing the risk of tearing, and enhancing the predictability and safety of the surgical process.

[0030] like Figures 3-5 As shown, the connecting rod 8 is fixedly connected to the sliding plate 21, and the sliding plate 21 is fixedly connected to the outside of the airbag 22 for tightly fitting with the bearing shell 1. The bearing shell 1 is provided with an annular cavity 23 on the side near the sliding plate 21, and the annular cavity 23 is located between the rotating shell 9 and the first power transmission member 5.

[0031] In the above scheme, an inclined annular surface is provided at the connection position between the lower side of the annular cavity 23 and the inner side of the bearing shell 1. The inclined annular surface is used to compress the airbag 22. The airbag 22 is initially located in the annular cavity 23, so that the connecting rod 8 does not trigger the sliding plate 21 to extract the negative pressure in the upper part of the bearing shell 1 when it first starts to move. When the sliding plate 21 slides out of the annular cavity 23, a negative pressure environment is formed in the upper part of the bearing shell 1, which causes the amniotic membrane to adhere tightly to the outer surface of all the elastic membranes 16 and the outer surface of the upper annular inclined plate 3, maintaining the flatness of the amniotic membrane during the cutting process.

[0032] Working principle: When the amniotic membrane needs to be cut, the user places the front side of the support shell 1 and the fixing seat 14 against the surgical position, and then controls the sliding block 7 to move downward. During the downward movement of the sliding block 7, the telescopic part of the second power transmission component 6 moves synchronously, thereby allowing the liquid in the first power transmission component 5 to enter the second power transmission component 6 through the connecting tube. After the liquid in the first power transmission component 5 is depleted, its telescopic part drives the connecting rod 8 to move downward. The connecting rod 8 drives the U-shaped frame 801 and the sliding plate 21 to move downward synchronously (the sliding plate 21 slides in the annular cavity 23 at this time). The connecting rod 8 drives the sliding frame 19 to move downward through the spring (the telescopic part of the sliding frame 19 is pulled during the movement to store force). The sliding frame 19 drives the hinge seat 18 to move synchronously. During the movement of the hinge seat 18, the hinge rod 17 opens the adjacent swing rod 15. Through the opening of all the swing rods 15, all the swing rods 15 and the elastic membrane 16 gradually come into contact with the surgical position. In this process, the part to be cut is gradually stretched, reducing the risk of tearing and enhancing the predictability and safety of the surgical process.

[0033] When the U-shaped frame 801 moves to its lower side and fits against the upper side of the rotating shell 9, all the swing rods 15 are extended and their opposite sides are in contact with the annular inclined plate 3 located on the lower side (since all the sliding frames 19 have swung to their limit positions, the connecting rod 8 will cause the spring between the U-shaped frame 801 and the sliding frame 19 to be compressed and contracted during its continued movement, and at this time the sliding plate 21 has slid out of the annular cavity 23). The connecting rod 8 continues to move downward (during the movement of the connecting rod 8, the sliding plate 21 and the airbag 22 move within the bearing shell 1, and the airbag 22 is now tightly fitted with the bearing shell 1, and the continuous movement of the airbag 22 creates a negative pressure state in the upper part of the bearing shell 1). At that time, the connecting rod 8 drives the rotating shell 9 to move downward through the U-shaped frame 801. During the downward movement of the rotating shell 9, all the elastic ropes 10 are stretched first, and the straight groove in the sliding groove 12 on the rotating shell 9 slides relative to the fixed rod 11. When the fixed rod 11 switches from contacting the straight groove in the sliding groove 12 to contacting the inclined groove, the rotating shell 9 moves downward while rotating (elastic rope 10 deforms). During the movement, the rotating shell 9 drives the lower part of all the blades 2 to move, so that all the blades 2 move along the bearing shell 1 under the guidance of the two annular guide plates 4, pushing the upper part of all the blades 2 upward and gradually pushing them out from the two annular inclined plates 3. Through the movement of the sliding plate 21 and the airbag 22, a negative pressure extraction environment is created in the upper part of the bearing shell 1, so that the amniotic membrane actively adheres to the outer surface of all the elastic membranes 16 and the outer surface of the upper annular inclined plate 3, so that the amniotic membrane remains flat during the cutting process and facilitates the cutting of the amniotic membrane by all the blades 2 during the movement. With the help of the rotation of all the blades 2, the amniotic membrane is rotated and cut, improving the regularity of the cutting edge and reducing the cutting deviation caused by tissue loosening or local deformation.

[0034] After the amniotic membrane is cut, the user can remove the device and process the amniotic membrane. Then, the device is reset. The reset process is as follows: The user pushes the sliding block 7 upward, which drives the telescopic part of the second power transmission component 6 to move upward. This allows the liquid in the second power transmission component 6 to enter the first power transmission component 5 through the connecting pipe. This causes the telescopic part of the first power transmission component 5 to drive the connecting rod 8 upward. During the reset process, the connecting rod 8 drives the U-shaped frame 801 and the sliding plate 21 to move upward synchronously. During the upward movement of the U-shaped frame 801, it no longer squeezes the rotating shell 9. The rotating shell 9 moves upward under the action of all the elastic ropes 10. Under the action of the contact between the fixed rod 11 and the slide groove 12, the rotating shell 9 rotates while moving upward.

[0035] When the fixed rod 11 slides from the inclined groove in the sliding groove 12 to the vertical groove, the rotating shell 9 moves upward (during the movement of the rotating shell 9, all the blades 2 move and reset). During the upward movement of the connecting rod 8 and the U-shaped frame 801, the connecting rod 8 no longer compresses the spring. At that time, the connecting rod 8 drives the sliding frame 19 to move upward and reset through the spring. The sliding frame 19 drives the hinge seat 18 to move synchronously. The hinge seat 18 drives the adjacent swing rod 15 to swing inward through the hinge rod 17. During the swing of the swing rod 15, it no longer contacts the adjacent annular inclined plate 3. When all the swing rods 15 swing to the basic state shown in the figure, and the sliding plate 21 moves to the annular cavity 23 (at this time, the airbag 22 and the bearing shell 1 are no longer in contact), the reset process of the present invention has ended. When the device needs to be used again, the above can be repeated.

[0036] Example 2: Based on Example 1, such as Figures 2-4 As shown, a sliding shell 26 is slidably connected to the side of the bearing shell 1 near the rotating shell 9. An airbag 22 is located between the sliding shell 26 and the rotating shell 9. A sliding plate 21 is used to squeeze the sliding shell 26. A protective film 27 is fixedly connected between the interior of the sliding shell 26 and the adjacent side of the bearing shell 1.

[0037] In the above scheme, an easy-tear part is provided at the fixed position between the upper side of the protective film 27 and the support shell 1, so as to facilitate the tearing off of the protective film 27. The protective film 27 is used to protect the contact position between the device and the amnion. When the sliding plate 21 squeezes the sliding shell 26, the sliding shell 26 pulls the lower side of the protective film 27, so that the upper side of the protective film 27 gradually separates from the contact with the upper inner side of the support shell 1. At the same time, during the process of the protective film 27 being pulled, it drives the surrounding amnion to spread in all directions, reducing the degree of adhesion between the amnion and the device.

[0038] After the amniotic membrane is cut, the connecting rod 8 continues to drive the sliding plate 21 to move downward. When the sliding plate 21 moves to contact the sliding shell 26, it drives the sliding shell 26 to move synchronously. During the movement of the sliding shell 26, the protective film 27 is pulled. As the upper side of the protective film 27 gradually separates from the inner surface of the upper side of the bearing shell 1, it causes the surrounding amniotic membrane to stretch and extend in all directions during the pulling process, reducing the adhesion stress between the amniotic membrane and the device, thereby reducing the degree of adhesion and facilitating subsequent separation and operation. When the amniotic membrane needs to be cut again, a new protective film 27 can be replaced.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A micro-amniotic ring drilling device for macular hole surgery, characterized in that, The device includes a support shell (1), on one side of which a ring array of blades (2) is slidably connected. When the ring array of blades (2) is fully extended, it will not exceed the adjacent side of the support shell (1). The support shell (1) is provided with a power component for moving the ring array of blades (2). The support shell (1) is provided with a support component for temporarily supporting the surgical position. Two ring inclined plates (3) and two ring guide plates (4) are fixedly connected to the side of the support shell (1) near the ring array of blades (2). The ring array of blades (2) slides between the two ring inclined plates (3) and the two ring guide plates (4). The power assembly includes a first power transmission component (5), which is fixedly connected to the side of the bearing shell (1) near the annular inclined plate (3). A second power transmission component (6) is fixedly connected to the side of the bearing shell (1) away from the annular inclined plate (3). The second power transmission component (6) and the first power transmission component (5) are connected by a connecting pipe. A sliding block (7) is slidably connected to the side of the bearing shell (1) away from the annular inclined plate (3) and fixedly connected to the telescopic part of the second power transmission component (6). A connecting rod (8) is fixedly connected to the telescopic part of the first power transmission component (5). A U-shaped frame (801) is fixedly connected to the side of the connecting rod (8) away from the first power transmission component (5). A rotating shell (9) is provided on the side of the bearing shell (1) near the first power transmission component (5). The rotating shell (9) is fixedly connected to the side of the blades (2) distributed in an annular array away from the annular inclined plate (3). Several inclined elastic ropes (10) are fixedly connected to the side of the bearing shell (1) near the annular inclined plate (3), and the side of the several elastic ropes (10) away from the bearing shell (1) is fixedly connected to the rotating shell (9). At least two fixed rods (11) are fixedly connected to the side of the bearing shell (1) near the rotating shell (9). The rotating shell (9) is located between the elastic rope (10) and the fixed rods (11). The rotating shell (9) is provided with at least two sliding grooves (12). The sliding grooves (12) correspond one-to-one with the fixed rods (11). The fixed rods (11) slide along the corresponding sliding grooves (12). The sliding grooves (12) are composed of inclined grooves and straight grooves connected to each other. The inclined grooves are located on the upper side of the straight grooves. The support assembly includes an L-shaped frame (13), which is fixed to the side of the bearing shell (1) near the rotating shell (9). A fixed seat (14) is fixed to the side of the L-shaped frame (13) away from the rotating shell (9). A ring array of swing rods (15) is hinged to the fixed seat (14). The ring inclined plate (3) near the ring guide plate (4) is used to limit the swing range of the ring array of swing rods (15). An elastic membrane (16) is fixed between two adjacent swing rods (15). The inner sides of the swing rods (15) in the circular array are all hinged with hinge rods (17). The opposing sides of the hinge rods (17) in the circular array are all hinged with hinge seats (18) that slide along the L-shaped frame (13). The connecting rod (8) is slidably connected to a sliding frame (19) that is fixed to the hinge seat (18). A spring sleeved on the connecting rod (8) is fixed between the sliding frame (19) and the U-shaped frame (801). During use, when the U-shaped frame (801) moves to its lower side and fits against the upper side of the rotating shell (9), all the swing rods (15) are unfolded and their back sides are in contact with the annular inclined plate (3) located on the lower side. The connecting rod (8) continues to move downward, driving the rotating shell (9) to move downward. The straight groove in the sliding groove (12) on the rotating shell (9) slides relative to the fixed rod (11). When the fixed rod (11) switches from contacting the straight groove in the sliding groove (12) to contacting the inclined groove in the sliding groove (12), the rotating shell (9) moves downward while rotating. During the movement, the rotating shell (9) drives the lower part of all the blades (2) to move, so that the upper part of all the blades (2) is pushed upward and gradually pushed out from the two annular inclined plates (3). With the help of the rotation of all the blades (2), the amniotic membrane is rotated and cut.

2. The micro-macula hole ring drilling device according to claim 1, wherein the micro-macula hole ring drilling device is characterized in that, The two annular guide plates (4) have hook-shaped cross sections for guiding the blades (2) distributed in an annular array.

3. The miniature amniotic trephine device for macular hole surgery according to claim 1, characterized in that, The connecting rod (8) is fixedly connected to a sliding plate (21), and an airbag (22) for tightly fitting the bearing shell (1) is fixedly connected to the outside of the sliding plate (21).

4. A miniature amniotic trephine device for macular hole surgery according to claim 3, characterized in that, The bearing shell (1) has an annular cavity (23) on the side near the sliding plate (21), and the annular cavity (23) is located between the rotating shell (9) and the first power transmission member (5).

5. A miniature amniotic trephine device for macular hole surgery according to claim 4, characterized in that, The supporting shell (1) is slidably connected to a sliding shell (26) on the side near the rotating shell (9). The airbag (22) is located between the sliding shell (26) and the rotating shell (9). The sliding plate (21) is used to squeeze the sliding shell (26). A protective film (27) is fixedly connected between the interior of the sliding shell (26) and the adjacent side of the supporting shell (1).

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