A type of eyelid opener with built-in drainage

Abstract

This utility model provides a self-draining eyelid speculum, belonging to the field of drainage-type eyelid speculum. It includes a main support frame with side frames fixedly connected to both ends. A threaded rod is rotatably connected within the side frames, and two movable blocks are mounted on the threaded rod. A support arm is fixedly connected to the end of each movable block, and a support plate is fixedly connected to the end of each support arm. The support plate is U-shaped, with rounded corners at its bottom. A drainage channel is formed on the inner side of the support arm, and a plug is provided at the end of the support arm. A spiral groove is formed on the side wall of the drainage channel, with a semi-circular cross-section. Multiple diversion channels are formed on the inner side of the support plate, with one end of each diversion channel located inside the drainage channel and the other end having an inlet. Compared to traditional linear drainage channels, this design, through a spatially staggered layout and fluid-optimized structure, reduces the likelihood of drainage channel blockage during ophthalmic surgery.

Description

Technical Field

[0001] This utility model relates to the field of drainage-type eyelid openers, and more specifically, to an eyelid opener with built-in drainage. Background Technology

[0002] Eyelid speculum are crucial instruments used in ophthalmic surgery to open the patient's eyelids. They maintain eyelid opening through mechanical structures, providing a stable surgical field. Traditional eyelid speculum typically consists of symmetrical upper and lower arms and an adjustment mechanism, relying on elastic or threaded locking to fix the eyelid. However, in surgeries requiring continuous irrigation, such as vitrectomy and phacoemulsification, intraoperative fluids (such as irrigation fluid, blood, or viscoelastic agents) can easily accumulate in the conjunctival sac, interfering with microscopic vision and potentially leading to complications such as corneal edema. Therefore, current technologies incorporate drainage grooves or side holes in the arms of the eyelid speculum to drain accumulated fluid through passive drainage or external negative pressure suction.

[0003] However, eyelid openers with built-in drainage still have significant drawbacks in actual use: because the fluids used in ophthalmic surgery often contain blood clots, viscoelastic agents, or tissue debris, these substances can easily block the narrow grooves or channels of the drainage channel, leading to drainage failure.

[0004] How to design a self-draining eyelid opener to improve these problems has become an urgent issue for those skilled in the art. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a self-contained eyelid opener, which aims to improve the problems mentioned in the background.

[0006] This utility model is implemented as follows: This utility model provides a self-contained drainage eyelid opener, including a main support, with side frames fixedly connected to both ends of the main support. A threaded rod is rotatably connected within each side frame, and two movable blocks are mounted on the threaded rod. A support arm is fixedly connected to the end of each movable block, and a support plate is fixedly connected to the end of each support arm. The support plate is U-shaped, with rounded corners at its bottom. A drainage channel is formed on the inner side of the support arm, and a plug is provided at the end of the support arm. A spiral groove is formed on the side wall of the drainage channel, with a semi-circular cross-section. Multiple diversion channels are formed on the inner side of the support plate, with one end of each diversion channel located inside the drainage channel and the other end of each diversion channel having an inlet located on the side wall of the support plate.

[0007] Preferably, the plug seals the end of the support arm, the diversion channels are equidistant along the length of the support arm, and the inlets are staggered in the horizontal direction.

[0008] Preferably, the inlet is provided with an anti-clogging groove that extends to the outside of the inlet.

[0009] Preferably, the threaded rod is fixedly connected to a rotating handle at both ends, and the two sides of the threaded rod are provided with threads in opposite directions of rotation. The threads are located between the rotating handles at both ends, and the threaded rod is connected to two moving blocks through the threads.

[0010] Preferably, a connection port is fixedly connected to the support arm, the connection port is located between the diversion channel and the main support, and the connection port is connected to the drainage channel.

[0011] Preferably, a connecting pipe is provided on the connection port, two connecting pipes are connected, a negative pressure pipe is provided on the connecting pipe, and the negative pressure pipe is connected to an external negative pressure device.

[0012] Preferably, the main support is provided with a slide rail, the movable block is provided with a sliding plate, the sliding plate is located on both sides of the slide rail, and the movable block is slidably connected to the main support through the slide rail and the sliding plate.

[0013] The beneficial effects of this invention are as follows: By increasing the drainage range through multiple staggered inlets on the inner side of the support plate, even if some inlets are temporarily blocked by eyelid tissue, the remaining inlets 9 can still maintain unobstructed drainage; the anti-blocking grooves extending outward from each inlet form tissue avoidance space, preventing soft tissue from completely adhering to and blocking the inlet; by setting semi-circular spiral grooves on the inner wall of the drainage channel, the spiral grooves guide the internal liquid to form a swirling flow, avoiding mucus deposition; the semi-circular groove surface provides a smooth transition, eliminating potential dead angles of retention in right-angle areas. These features work together to keep the drainage area open throughout the operation. Compared with traditional straight drainage channels, this design, through its staggered spatial layout and fluid-optimized structure, reduces the problem of easy blockage of drainage channels during ophthalmic surgery. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of a self-draining eyelid opener provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of a self-draining eyelid opener support arm structure provided by an embodiment of this utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of a connecting tube structure for a self-draining eyelid opener provided by an embodiment of this utility model; Figure 5 This is a schematic diagram of the main support structure of a self-draining eyelid opener provided by an embodiment of this utility model.

[0016] In the diagram: 1. Main support; 2. Side frame; 3. Threaded rod; 4. Moving block; 5. Support arm; 6. Support plate; 7. Plug cap; 8. Spiral groove; 9. Inlet; 10. Anti-clogging groove; 11. Connection port; 12. Connecting pipe; 13. Negative pressure pipe; 14. Slide plate; 15. Slide track; 51. Drainage channel; 61. Diversion channel. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Example, refer to Figures 1-5 A self-draining eyelid opener includes a main support 1. Side frames 2 are fixedly connected to both ends of the main support 1. A threaded rod 3 is rotatably connected inside the side frame 2. Two movable blocks 4 are provided on the threaded rod 3. A support arm 5 is fixedly connected to the end of the movable block 4. A support plate 6 is fixedly connected to the end of the support arm 5. The support plate 6 is U-shaped and the bottom corners of the support plate 6 are rounded. A drainage channel 51 is opened on the inner side of the support arm 5. A plug cap 7 is provided at the end of the support arm 5. A spiral groove 8 is provided on the side wall of the drainage channel 51. The spiral groove 8 is semi-circular in cross-section. Multiple diversion channels 61 are opened on the inner side of the support plate 6. One end of the diversion channel 61 is opened on the inner side of the drainage channel 51, and the other end of the diversion channel 61 is provided with an inlet 9, which is located on the side wall of the support plate 6.

[0019] The plug cap 7 seals the end of the support arm 5. The diversion channels 61 are equidistantly arranged along the length of the support arm 5. The inlets 9 are staggered in the horizontal direction. The inlets 9 are provided with anti-blocking grooves 10, which extend to the outside of the inlets 9. The threaded rod 3 is fixedly connected to the two ends with rotating handles. The two sides of the threaded rod 3 are provided with threads in opposite directions. The threads are located between the rotating handles at both ends. The threaded rod 3 is connected to two moving blocks 4 through the threads. The support arm 5 is fixedly connected with a connection port 11, which is located between the diversion channel 61 and the main support 1. The connection port 11 is connected to the drainage channel 51. The connection port 11 is connected to the connection pipe 12, and the two connection pipes 12 are connected. The connection pipe 12 is connected to the negative pressure pipe 13, which is connected to the external negative pressure equipment. The main support 1 is provided with a slide rail 15, and the moving block 4 is provided with a sliding plate 14. The sliding plate 14 is located on both sides of the slide rail 15. The moving block 4 is slidably connected to the main support 1 through the slide rail 15 and the sliding plate 14.

[0020] The working principle of this self-draining eyelid opener is as follows: First, the operator drives the threaded rod 3 to rotate by rotating the handle, causing the two moving blocks 4 to move synchronously towards each other along the slide 15 of the main support 1, which drives the support arm 5 and the support plate 6 to smoothly open the eyelid. During the operation, the irrigation fluid and eye secretions first enter the diversion channel 61 through multiple inlets 9 arranged in an alternating pattern on the inner side of the support plate 6. This multi-directional inlet design ensures that the drainage function can still be maintained even if some inlets 9 are blocked by the eyelid. Then, the liquid gathers into the drainage channel 51, and the semi-circular spiral groove 8 on its inner wall accelerates the flow of liquid and prevents mucus deposition through the spiral guiding effect. Finally, under the action of the external negative pressure device, the liquid is continuously suctioned out through the connection port 11, the connection tube 12 and the negative pressure tube 13 in sequence. The entire drainage process achieves uninterrupted liquid removal through the multi-stage anti-blockage design, while the U-shaped structure and rounded corners of the support plate 6 ensure non-invasive support for the eyelid tissue.

[0021] Multiple inlets 9 arranged in a staggered pattern on the inner side of the support plate 6 increase the drainage range. Even if some inlets 9 are temporarily blocked by eyelid tissue, the remaining inlets 9 can still maintain unobstructed drainage. Secondly, the anti-blocking grooves 10 extending outward from each inlet 9 form a tissue avoidance space to prevent soft tissue from completely adhering to and blocking the inlet 9. By setting a semi-circular spiral groove 8 on the inner wall of the drainage channel 51, the spiral groove guides the internal liquid to form a swirling flow, avoiding mucus deposition. The semi-circular groove surface provides a smooth transition, eliminating the dead corners that may be formed in right-angle areas.

[0022] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-draining eye speculum comprising a main support (1), characterized in that, Both ends of the main support (1) are fixedly connected with side frames (2), the side frames (2) are rotationally connected with threaded rods (3) inside, two moving blocks (4) are arranged on the threaded rods (3), the end portions of the moving blocks (4) are fixedly connected with support arms (5), the end portions of the support arms (5) are fixedly connected with support plates (6), the support plates (6) are arranged in a "U" shape, the corners of the bottom of the support plates (6) are arranged in a circular arc shape, the inner sides of the support arms (5) are provided with drainage channels (51), the end portions of the support arms (5) are provided with plug caps (7), the side walls of the drainage channels (51) are provided with helical grooves (8), the cross sections of the helical grooves (8) are arranged in a semicircular shape, the inner sides of the support plates (6) are provided with a plurality of shunt channels (61), one end of the shunt channels (61) is arranged on the inner side of the drainage channel (51), the other end of the shunt channels (61) is provided with an inlet (9), the inlet (9) is arranged on the side wall of the support plate (6), The plug caps (7) block the end portions of the support arms (5), the shunt channels (61) are equidistantly arranged in the length direction of the support arms (5), the inlets (9) are staggered arranged in the horizontal direction, The inlets (9) are provided with anti-blocking grooves (10) extending to the outside of the inlets (9).

2. The self-draining speculum according to claim 1, wherein, Both ends of the threaded rods (3) are fixedly connected with rotating handles, the threaded rods (3) are provided with threads rotating in opposite directions on the two sides, the threads are located between the rotating handles at both ends, and the threaded rods (3) are connected with the two moving blocks (4) in a threaded manner.

3. The self-draining speculum of claim 1, wherein, The support arms (5) are fixedly connected with connecting ports (11), the connecting ports (11) are located between the shunt channels (61) and the main support (1), and the connecting ports (11) are in communication with the drainage channels (51).

4. The self-draining speculum of claim 3, wherein, The connecting ports (11) are in communication with connecting pipes (12), two connecting pipes (12) are in communication, the connecting pipes (12) are in communication with negative pressure pipes (13), and the negative pressure pipes (13) are in communication with external negative pressure equipment.

5. The self-draining speculum of claim 1, wherein, The main support (1) is provided with a slide (15), the moving blocks (4) are provided with sliding plates (14), the sliding plates (14) are located on the two sides of the slide (15), and the moving blocks (4) are slidingly connected with the main support (1) through the slide (15) and the sliding plates (14).

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