An eyelid speculum

Abstract

The application provides an eye lid opening device, and relates to the technical field of medical devices. The eye lid opening device comprises symmetrically distributed eye lid opening blades, one end of each of the eye lid opening blades is rotationally connected with a same connecting seat, one side of the connecting seat is fixedly connected with a supporting assembly, the supporting assembly is used for supporting the eye lid opening blades, and the supporting assembly is connected with the connecting seat; an expansion assembly is used for assisting in expanding the eye lid field of view, and the expansion assembly is connected with the eye lid opening blades. In the above scheme, the eye lid opening device is provided with the supporting assembly and the expansion assembly, the supporting assembly adds a support point, effectively offsets the lever pulling stress generated by the self weight of the instrument arm, and improves the eye lid opening stability; the expansion assembly can secondarily and progressively open the relaxed and drooping eye lid, and eliminates the problem of the lower eyelid covering the surgical field.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an eyelid opening device. Background Technology

[0002] In ophthalmic nursing procedures, it is necessary to open the eyelids to fix the eyelids, prevent blinking and closing of the eyeballs, and avoid eyelashes and eyelids from obstructing the operation area. This type of eyelid opener is also called an eyelid speculum. Medical eyelid openers are mostly made of stainless steel and adopt a screw-type self-fixing structure, which can stably open the eyelids for a long time.

[0003] Existing adjustable eyelid speculums can adjust the spacing of the eyelid flaps according to the patient's needs to meet the needs of different patients, but there are still some problems: First, for patients with loose eyelids and large palpebral fissures (especially the elderly), the eyelid flaps are prone to drooping or eversion after being opened, and the eyelid tissue cannot be completely covered. The drooping eyelids will cover the surgical field, interfere with eye care operations, and affect the accuracy of care. Second, for sensitive patients who are prone to blinking and trembling, the instrument arm of the eyelid speculum hangs naturally on the outer side of the eye. Its own weight will exert a continuous pull on the eyelid through the lever structure, which not only reduces the stability of eyelid opening, but also aggravates the patient's eye discomfort and may even cause stress blinking, further interfering with the operation. Summary of the Invention

[0004] This invention provides an eyelid opening device to solve the technical problems of eyelid drooping obstructing the field of vision in patients with loose eyelids and large palpebral fissures, and the impact of the instrument arm's own weight pulling on the eyelids on the stability of operation in sensitive patients.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] An eyelid opening device includes two symmetrically distributed eyelid opening blades. One end of the two eyelid opening blades is rotatably connected to a connecting seat, and an expansion component is installed on the other end. A clamp is installed on the expansion component, and the expansion component adjusts the distance between the clamp and the eyelid opening blade 1.

[0007] A support assembly is installed on the connecting seat. The support assembly includes a hinge fulcrum fixedly connected to the connecting seat. Two symmetrically distributed threaded clamps are rotatably connected through the hinge fulcrum. When the two threaded clamps are closed, they form an internal thread. A screw is inserted between the two threaded clamps, and the end of the screw is rotatably connected to one end of the bracket. The other end of the bracket is rotatably connected to the middle of the eyelid opening blade.

[0008] Optionally, the support assembly includes a hinge fulcrum fixedly connected to one side of the connecting seat, with symmetrically distributed threaded clamps hinged to the hinge fulcrum. The working ends of the threaded clamps form a circular structure with internal threads. The bottom of each threaded clamp is rotatably connected to a support plate, and the top of each threaded clamp is fixedly connected to a second fixing block. The same series rope is inserted into the second fixing block.

[0009] Optionally, a groove is provided at the center of the connecting seat, and a screw is inserted into the groove. The screw engages with the internal thread on the threaded clamp, and the inner wall diameter of the groove is larger than the outer contour diameter of the screw.

[0010] Optionally, one end of the screw is fixedly connected to an adjustment knob, the other end of the screw is hinged to a symmetrically distributed bracket, the other end of the bracket is hinged to the position of the eyelid opening blade near the center, and the top of the other end of the screw is fixedly connected to a first fixing block.

[0011] Optionally, a through groove is provided on the connecting seat corresponding to the position of the second fixing block, and the inner wall diameter of the through groove is larger than the outer contour diameter of the connecting rope.

[0012] Optionally, the connecting rope is a closed loop structure, and the connecting rope passes through the interior of the second fixing block, the through groove and the first fixing block in sequence.

[0013] Optionally, the expansion component includes an arc-shaped groove formed at the top of the free end of the eyelid opening blade, a corrugated plate fixedly connected to the eyelid opening blade at a position corresponding to the arc-shaped groove, a push rod inserted between the corrugated plate and the arc-shaped groove, the push rod having a U-shaped rod structure, a clamp fixedly connected to the push rod, a buffer pad fixedly connected to the bottom of the clamp, and symmetrically distributed C-shaped grooves fixedly connected to the top of the eyelid opening blade at a position corresponding to the push rod.

[0014] Optionally, the arc-shaped groove and the wave plate are interlocked to form a circular structure, and the inner wall diameter of the circular structure is adapted to the outer contour diameter of the push rod.

[0015] Optionally, the corrugated plate has uniformly distributed weakening grooves in its recessed area, and the distance between the bottom of the corrugated plate and the top of the arc-shaped groove is smaller than the diameter of the push rod.

[0016] Optionally, the inner wall dimension of the C-shaped groove is larger than the outer contour diameter of the push rod, and the opening spacing dimension of the C-shaped groove is smaller than the outer contour diameter of the push rod.

[0017] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0018] In the above solution, by setting up a support component and an expansion component, the support component adds support points, making the device more closely fit the contour of the eye, effectively offsetting the leverage tension generated by the weight of the instrument arm, improving the stability of eyelid opening, avoiding patient discomfort and stress-induced blinking caused by traction, and ensuring smooth operation; the expansion component can perform a secondary progressive opening of the loose and drooping eyelid, covering and fixing the everted eyelid margin and drooping tissue, eliminating the problem of eyelid eversion obstructing the surgical field, improving the accuracy and visual clarity of eye care operations, and adapting to the needs of elderly patients, patients with large palpebral fissures, and sensitive patients.

[0019] By combining the threaded clamp and the support plate, the support plate can rotate omnidirectionally around the bottom of the threaded clamp, adapting to different patients' periorbital contours and operating angles, thus improving fit and comfort. The support plate is made of medical-grade matte silicone, which effectively prevents the threaded clamp from slipping or loosening, counteracts the tensile stress generated by the weight of the threaded clamp, and improves the stability of eyelid opening. In addition, the ball joint structure can buffer the vibration of operation, avoid continuous pressure on the eyelid, and is suitable for sensitive and easily trembling patients, ensuring accurate and smooth nursing operations.

[0020] By using a threaded clamp and a connecting rope, and relying on the linkage traction of the ring-shaped micro-elastic connecting rope, the threaded clamp can be quickly unlocked by pinching it, allowing the screw to slide freely. At the same time, the connecting rope is passively stretched as the clamp opens, which in turn drives the bracket to retract and reduce the eyelid opening distance, enabling one-click quick removal of the device. This simplifies the disassembly process, improves operational efficiency, reduces eyelid traction during disassembly, and reduces eye discomfort. It is suitable for all types of patients, especially for sensitive individuals and elderly patients.

[0021] By combining an arc-shaped groove, a wave plate, and a push rod, a circular clamping cavity with elastic clamping can be formed. The weakened groove and thinned structure enhance the deformation capability, making the push rod adjustment smoother and less strenuous. It can flexibly change the distance between the clamp and the eyelid opening blade to adapt to different eyelid sizes and loose, drooping eyelids, achieving targeted opening and fixation. The C-shaped groove can accommodate the limiting push rod, and it can switch between sliding adjustment and rotational opening modes to ensure flexible and stable operation. Attached Figure Description

[0022] Figure 1 This is a first-view three-dimensional structural diagram of the eyelid opening device of the present invention;

[0023] Figure 2 For the present invention Figure 1 Enlarged 3D structural diagram at point A in the middle;

[0024] Figure 3 This is a second-view three-dimensional structural diagram of the eyelid opening device of the present invention;

[0025] Figure 4 For the present invention Figure 3Enlarged 3D structural diagram at point B;

[0026] Figure 5 This is a third-view perspective three-dimensional structural diagram of the eyelid opening device of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged 3D structural diagram at point C;

[0028] Figure 7 This is a schematic diagram of the three-dimensional structure of the eyelid leaf of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged 3D structural diagram at point D;

[0030] Figure 9 This is a partial cross-sectional three-dimensional structural diagram of the eyelid opening blade and clamp of the present invention;

[0031] Figure 10 For the present invention Figure 9 Enlarged 3D structural diagram at point E;

[0032] Figure 11 This is a first-view three-dimensional structural diagram of the threaded clamp of the present invention;

[0033] Figure 12 This is a two-dimensional structural diagram of the threaded clamp of the present invention from a second perspective.

[0034] [Figure Labels]

[0035] 1. Eyelid opening blade; 2. Connecting seat; 3. Screw; 4. Adjusting knob; 5. First fixing block; 6. Bracket; 7. Threaded clamp; 8. Support plate; 9. Second fixing block; 10. Connecting rope; 11. Slide groove; 12. Through groove; 13. Hinge fulcrum; 14. Arc groove; 15. Wave plate; 16. Weakening groove; 17. Push rod; 18. Clamp; 19. Buffer pad; 20. C-shaped groove; 21. Rotating seat. Detailed Implementation

[0036] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0037] like Figures 1 to 12As shown, an embodiment of the present invention provides an eyelid retractor, comprising symmetrically distributed eyelid retractors 1, one end of which is rotatably connected to a common connecting seat 2. A support component is fixedly connected to one side of the connecting seat 2, the support component being used to support the eyelid retractors 1, and the support component being connected to the connecting seat 2; and an expansion component, which is used to assist in expanding the field of vision after eyelid retraction, and the expansion component being connected to the eyelid retractors 1. The eyelid retractor of this embodiment can be used for routine eye examinations and slit-lamp observation, retracting the eyelids to expose the ocular surface and avoiding interference from blinking; it is also suitable for ocular drug administration, conjunctival sac irrigation, corneal foreign body removal, and other operations, fixing the eyelids to ensure smooth operation and providing stable eyelid retraction support for various ophthalmic operations. This device is an optimization based on the existing medical eyelid opener. The specific structure and working principle of the medical eyelid opener are disclosed as existing technology and will not be described in detail. In the actual product, the two eyelid opener blades 1 are fulcrumd with the connecting seat 2. Rotating the screw 3 can drive the bracket 6 to rotate, which opens and fixes the upper and lower eyelid opener blades 1 to prevent blinking. Adjusting the screw 3 can also precisely control the eyelid opening range to adapt to different eye shapes.

[0038] This embodiment incorporates a support component and an expansion component. The support component adds support points, making the device more closely conform to the contours of the eye, effectively counteracting the leverage stress generated by the weight of the instrument arm, improving the stability of eyelid opening, avoiding patient discomfort and stress-induced blinking caused by traction, and ensuring smooth operation. The expansion component can perform a secondary progressive opening of the loose and drooping eyelid, covering and fixing the everted eyelid margin and drooping tissue, eliminating the problem of eyelid eversion obstructing the surgical field, improving the accuracy and visual clarity of eye care operations, and meeting the needs of elderly patients, patients with large palpebral fissures, and sensitive patients.

[0039] like Figure 11 and Figure 12 As shown, the support assembly includes a hinge fulcrum 13 fixedly connected to one side of the connecting seat 2. Two symmetrically distributed threaded clamps 7 are rotatably connected through the hinge fulcrum 13. A torsion spring is fitted onto the hinge fulcrum 13, and both ends of the torsion spring are respectively connected to the two threaded clamps 7. The working ends of the threaded clamps 7 form a circular structure with internal threads. Figure 5 As shown, a groove 11 is provided at the center of the connecting seat 2, and a screw 3 is inserted into the groove 11. The screw 3 mates with the internal thread on the threaded clamp 7. The inner diameter of the groove 11 is larger than the outer diameter of the screw 3. An adjusting knob 4 is fixedly connected to one end of the screw 3. Figure 1 As shown, the other end of the screw 3 is rotatably engaged with a rotating seat 21, and the rotating seat 21 is hinged to symmetrically distributed brackets 6. The other end of the brackets 6 is hinged to the eyelid-opening blade 1 near its center. A first fixing block 5 is fixedly connected to the top of the rotating seat 21. Figure 11 and Figure 12As shown, each threaded clamp 7 has a support plate 8 rotatably connected to its bottom, and a second fixing block 9 is fixedly connected to its top. A connecting rope 10 is inserted into the second fixing block 9. Figure 6 As shown, a through groove 12 is provided on the connecting seat 2 at the position corresponding to the second fixing block 9. The inner wall diameter of the through groove 12 is larger than the outer contour diameter of the connecting rope 10. The connecting rope 10 is a closed loop rope structure. The connecting rope 10 passes through the interior of the second fixing block 9, the through groove 12 and the first fixing block 5 in sequence.

[0040] In this embodiment, the eyelid-opening blades 1 are respectively hinged to both sides of the connecting seat 2, and the connecting seat 2 has a smooth inner wall groove 11 at its center (e.g., Figures 5 to 6 As shown), a screw 3 is inserted into the slide groove 11. The screw 3 can slide freely inside the slide groove 11. The position of the sliding screw 3 can change the relative position between the two supports 6, thereby causing the distance between the two eyelid opening blades 1 to increase or decrease, so as to adapt to the eyelid opening needs of different people.

[0041] In this embodiment, a hinge fulcrum 13 is fixedly connected to the side of the connecting seat 2 away from the bracket 6, and symmetrically distributed threaded clamps 7 (such as...) are hinged to the hinge fulcrum 13. Figures 5 to 6 As shown), a torsion spring is also fitted onto the hinge fulcrum 13. The threaded clamp 7 rotates around the hinge fulcrum 13, and the torsion spring is fitted onto the hinge fulcrum 13. When the handle at the bottom of the threaded clamp 7 is pressed, the threaded clamp 7 rotates around the hinge fulcrum 13, overcoming the torque of the torsion spring and opening the clamp. After the external force is removed, the torsion spring releases its elastic potential energy, driving the two threaded clamps 7 to return to their original position and fit together. The object is securely clamped by the clamping force continuously applied by the torsion spring. The structure is simple and the opening and closing is convenient. The cooperation principle of the threaded clamp 7, the hinge fulcrum 13, and the torsion spring is similar to the working principle of the torsion spring hinged spring clamp. The working principle of the torsion spring hinged spring clamp is disclosed as prior art, so it will not be described in detail. The working end of the threaded clamp 7 forms a circular structure with internal threads, which cooperates with the external threads on the outer wall of the screw 3 to form a helical transmission pair. By manually rotating the adjustment knob 4, the inclined surfaces of the thread profiles between the threaded clamp 7 and the screw 3 are engaged (e.g., ...). Figures 11 to 12 As shown, the rotational motion of the adjustment knob 4 is converted into the axial linear motion of the screw 3, thereby controlling the spacing between the opening blades 1. One end of the hinge fulcrum 13 is fixedly connected to the connecting seat 2, and symmetrically distributed threaded clamps 7 are hinged on the hinge fulcrum 13. Without affecting the opening and closing action of the threaded clamps 7 around the hinge fulcrum 13, the friction between the threaded clamps 7 and the hinge fulcrum 13 is increased to counteract the rotational torque generated by the weight of the threaded clamps 7, so that the threaded clamps 7 can keep the clamp opening facing upward. In this way, when the screw 3 rotates inside the threaded clamps 7, the threaded clamps 7 and the connecting seat 2 maintain a relatively stationary relationship, ensuring the stability of the overall relationship.

[0042] In this embodiment, a support plate 8 is rotatably connected to the bottom of the threaded clip 7. A ball head is fixedly installed at the bottom of the threaded clip 7, and the support plate 8 is hinged to the ball head via a ball socket at the top, allowing the support plate 8 to rotate freely around the bottom of the threaded clip 7. The support plate 8 is made of medical-grade silicone, which can directly adhere to the skin around the eyes, exhibiting good biocompatibility and no allergic irritation. The matte surface of the support plate 8 increases friction with the skin, preventing slippage or loosening of the threaded clip 7 and improving the stability of the support plate 8's fit. By combining the threaded clip 7 and the support plate 8, the support plate 8 can rotate omnidirectionally around the bottom of the threaded clip 7, adapting to different patients' eye contours and operating angles, improving fit and comfort. The support plate 8, made of medical-grade matte silicone, effectively prevents slippage and loosening of the threaded clip 7, counteracts the tensile stress generated by the weight of the threaded clip 7, improves eyelid opening stability, and the ball joint structure buffers operational vibrations, avoiding continuous pressure on the eyelids, making it suitable for sensitive and easily trembling patients, and ensuring precise and smooth nursing procedures.

[0043] like Figure 11 and Figure 12 As shown, the connecting rope 10 is a closed loop structure. The connecting rope 10 passes sequentially through the second fixing block 9, the through groove 12, and the interior of the first fixing block 5. The connecting rope 10 has a slightly elastic structure, and its natural slack length is suitable for the standard eyelid opening distance of most patients. In daily use, after most patients open and fix the eyelids with the device, the loop connecting rope 10 can remain taut or slightly tensioned. When the nursing procedure is finished and the opening device needs to be removed, hold the handle of the threaded clamp 7, first separate the support plate 8 from the patient's skin, then pinch the handle of the threaded clamp 7 to open the working end of the threaded clamp 7. At this time, the threaded fit between the screw 3 and the threaded clamp 7 is broken (e.g., ...). Figure 12 As shown), the screw 3 can slide freely inside the slide groove 11. At the same time, when the working end of the threaded clamp 7 opens, the length of the connecting rope 10 between the second fixing blocks 9 increases (as shown). Figure 12 As shown in the figure, the first fixing block 5 moves closer to the connecting seat 2, thereby reducing the distance between the eyelid opening blades 1, so as to facilitate the quick removal of the opening device. The operation is simple and efficient. Just pinch the bottom handle of the threaded clip 7 to reduce the distance between the eyelid opening blades 1. There is no need to rotate the adjustment knob 4 in the opposite direction to reduce the distance between the eyelid opening blades 1, which improves the overall operation efficiency and patient comfort.

[0044] In this embodiment, a threaded clamp 7 and a connecting rope 10 are used together. Relying on the linkage traction of the annular micro-elastic connecting rope 10, the threaded clamp 7 can be squeezed to quickly unlock the threaded limit, allowing the screw 3 to slide freely. At the same time, the connecting rope 10 is passively stretched as the clamp opens, which in turn drives the bracket 6 to close and reduce the eyelid opening distance, realizing one-click quick removal of the device. This simplifies the disassembly process, improves operation efficiency, and reduces the pulling of the eyelids during disassembly, reducing eye discomfort. It is suitable for all types of patients, especially for sensitive people and elderly patients.

[0045] like Figure 4 As shown, the expansion component includes an arc-shaped groove 14 formed at the top of the free end of the eyelid opening blade 1. A corrugated plate 15 is fixedly connected to the eyelid opening blade 1 at a position corresponding to the arc-shaped groove 14. A push rod 17 is inserted between the corrugated plate 15 and the arc-shaped groove 14. The arc-shaped groove 14 and the corrugated plate 15 are interlocked to form a circular structure. The inner diameter of the circular structure is adapted to the outer diameter of the push rod 17. The push rod 17 is a U-shaped rod structure. Figure 8 As shown, the corrugated plate 15 has evenly distributed weakening grooves 16 in its recess, and the distance between the bottom of the corrugated plate 15 and the top of the arc-shaped groove 14 is smaller than the diameter of the push rod 17. Figure 9 As shown, a clamp 18 is fixedly connected to the push rod 17, and a buffer pad 19 is fixedly connected to the bottom of the clamp 18. The top of the eyelid opening blade 1 is fixedly connected with symmetrically distributed C-shaped grooves 20 corresponding to the position of the push rod 17. The inner wall dimension of the C-shaped grooves 20 is larger than the outer contour diameter of the push rod 17, and the opening spacing dimension of the C-shaped grooves 20 is smaller than the outer contour diameter of the push rod 17.

[0046] In this embodiment, the free end of the eyelid-opening blade 1 is provided with uniformly distributed arc-shaped grooves 14, and a corrugated plate 15 is fixedly connected to the eyelid-opening blade 1, corresponding to the position of the arc-shaped grooves 14. The cross-section between the uniformly distributed arc-shaped grooves 14 and the corrugated plate 15 forms a uniformly distributed circular clamping cavity, and a push rod 17 (such as...) is inserted into the inside of the circular clamping cavity. Figures 7 to 10(As shown). The push rod 17 can rotate freely within the circular clamping cavity. The distance between the bottom of the wave plate 15 and the top of the arc-shaped groove 14 is smaller than the diameter of the push rod 17. The wave plate 15 has evenly distributed weakening grooves 16 in its recessed area. When the push rod 17 is pulled outwards by hand, it can move between the evenly distributed circular clamping cavities, thereby changing the distance between the clamp 18 and the eyelid opening blade 1. The weakening grooves 16 thin the minimum distance between the wave plate 15 and the arc-shaped groove 14, making it easier for the wave plate 15 to bend and deform at the location of the weakening grooves 16 under external force, thus facilitating the movement of the push rod 17. In addition, a C-shaped groove 20 is fixedly connected to the top of the eyelid opening blade 1 at the position corresponding to the push rod 17, which facilitates the sliding of the push rod 17. When the push rod 17 is housed inside the C-shaped groove 20, the push rod 17 can only slide along the long axis of the C-shaped groove 20. The push rod 17 is a U-shaped rod with two parallel long rods, and both long rods are parallel to the long axis of the C-shaped groove 20. When it is necessary for the clamp 18 to move away from the eyelid blade 1, the push rod 17 is separated from the C-shaped groove 20, and the push rod can then be rotated. The lever 17 drives the clamp 18 to rotate towards the top of the eyelid opening leaf 1. When the clamp 18 is needed to open the eyelid, the lever 17 is stored inside the C-shaped groove 20 to maintain the stability of the clamp 18. Moreover, by moving the lever 17 between the circular clamping cavities, the distance between the clamp 18 and the eyelid opening leaf 1 is changed to accommodate different patients. The buffer pad 19 is made of silicone material that can directly contact the skin. The buffer pad 19 is used to avoid tissue damage and increase the friction with the eyelid to prevent slippage.

[0047] In this embodiment, by setting up an arc-shaped groove 14, a wave plate 15 and a push rod 17 to cooperate, a circular clamping cavity with elastic clamping can be formed. The thinning structure of the weakening groove 16 enhances the deformation capability, making the push rod 17 push and pull adjustment smoother and less effort. It can flexibly change the distance between the clamp 18 and the eyelid opening blade 1 to adapt to different eyelid sizes and loose and drooping eyelids, and achieve targeted opening and fixation. With the C-shaped groove 20, the push rod 17 can be stored and limited. It can switch between sliding adjustment and rotation unfolding states to ensure flexible and stable operation.

[0048] The working process of the eyelid opening device provided by this invention is as follows:

[0049] During use, medical staff first complete the initial adjustment based on the patient's eye shape, eyelid laxity, and palpebral fissure size. By rotating the adjustment knob 4, the screw 3 is rotated. Utilizing the helical transmission pair between the screw 3 and the threaded clamp 7, the screw 3 moves smoothly within the slide groove 11, simultaneously pulling the hinged bracket 6 to deflect at an angle, thereby causing the eyelid opening blades 1 to open and close synchronously. The initial distance between the two eyelid opening blades 1 is precisely adjusted to match the patient's basic eye size. The threaded clamp 7 always maintains a stable state with the clamp opening facing upwards, avoiding structural displacement or loosening during thread adjustment.

[0050] After adjustment, the operator holds the eyelid opener and gently places it on the edge of the patient's eyelid, slowly opening the upper and lower eyelids. The opening range is adjusted until the surgical area is fully exposed without excessive traction. Because the support plate 8 forms a universal rotating structure through the ball head and the threaded clamp 7, it can flexibly adapt to different patients' periorbital contours and facial angles, achieving all-round fit. The support plate 8 is used to support the device by adhering to the skin, reducing the device's own weight. Through the lever structure, it generates continuous traction on the eyelids. For patients with loose eyelids and large palpebral fissures, the push rod 17 is housed inside the C-shaped groove 20. Medical staff pull the push rod 17, and with the help of the elastic circular clamping cavity formed by the arc groove 14 and the wave plate 15, and the slight deformation of the weakening groove 16, the push rod 17 can be easily pushed and pulled to move. The distance between the clamp 18 and the eyelid opening blade 1 can be flexibly adjusted to perform secondary opening and fixation of loose and drooping eyelids. The buffer pad 19 directly contacts the eyelid tissue, which can not only avoid scratching the eye mucosa with hard instruments, but also increase the clamping friction, firmly fix the everted eyelid, and completely eliminate the problem of obstruction of the surgical field. After the device is opened and fixed, the connecting rope 10 remains taut or slightly tensioned, which can also slightly pull the top of the threaded clamp 7, improve the fit and tightness of the device, and prevent accidental loosening and displacement during operation.

[0051] After all eye care and examination procedures are completed, there is no need to reverse the adjustment knob 4 to narrow the eyelid opening distance, simplifying the traditional cumbersome adjustment steps. Medical staff first separate the support plate 8 from the patient's skin around the eyes, and then squeeze the operating handle at the bottom of the threaded clamp 7, so that the threaded clamp 7 opens its jaws against the torsion spring torque with the hinge fulcrum 13 as the fulcrum. At this time, the threaded engagement structure between the screw 3 and the threaded clamp 7 is automatically released, and the screw 3 can slide freely in the slide groove 11. At the same time, the opening of the threaded clamp 7 will increase the distance between the two second fixing blocks 9, pull the connecting rope 10 to extend the force, and simultaneously pull the first fixing block 5 towards the connecting seat 2, quickly driving the bracket 6 to close, automatically narrowing the distance between the two eyelid opening blades 1, and easily removing the device from the patient's eyes. The entire disassembly process can be completed by simply pressing the handle, which saves time and effort, reduces the pain caused by pulling the eyelids during disassembly, and improves the patient's medical comfort.

[0052] In the above solution, by setting up this device and adding support points, the device as a whole fits the contour of the eye better, effectively counteracting the leverage stress generated by the weight of the instrument arm, improving the stability of eyelid opening, avoiding patient discomfort and stress-induced blinking caused by traction, and ensuring smooth operation; it performs a secondary progressive opening of the loose and drooping eyelid, covering and fixing the everted eyelid margin and drooping tissue, eliminating the problem of eyelid eversion obstructing the surgical field, improving the accuracy and visual clarity of eye care operations, and adapting to the needs of elderly patients, patients with large palpebral fissures, and sensitive patients.

[0053] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An eyelid opening device, characterized in that, It includes two symmetrically distributed eyelid opening blades, one end of the two eyelid opening blades is rotatably connected to a connecting seat, and an expansion component is installed on the other end. A clamp is installed on the expansion component, and the expansion component adjusts the distance between the clamp and the eyelid opening blade. A support assembly is installed on the connecting seat. The support assembly includes a hinge fulcrum fixedly connected to the connecting seat. Two symmetrically distributed threaded clamps are rotatably connected through the hinge fulcrum. When the two threaded clamps are closed, they form an internal thread. A screw is inserted between the two threaded clamps, and the end of the screw is rotatably connected to one end of the bracket. The other end of the bracket is rotatably connected to the middle of the eyelid opening blade.

2. The eyelid opening device according to claim 1, characterized in that, The bottom of each threaded clamp is rotatably connected to a support plate, and the top of each threaded clamp is fixedly connected to a second fixing block, with the same series rope inserted into the second fixing block.

3. The eyelid opening device according to claim 2, characterized in that, A groove is provided at the center of the connecting seat, and a screw is inserted into the groove. The screw engages with the internal thread on the threaded clamp, and the inner diameter of the groove is larger than the outer diameter of the screw.

4. The eyelid opening device according to claim 3, characterized in that, One end of the screw is fixedly connected to an adjustment knob, and the other end of the screw is hinged to a symmetrically distributed bracket. The other end of the bracket is hinged to the eyelid opening blade near the center. The top of the other end of the screw is fixedly connected to a first fixing block.

5. The eyelid opening device according to claim 4, characterized in that, A through groove is provided on the connecting seat corresponding to the position of the second fixing block, and the inner diameter of the through groove is larger than the outer diameter of the connecting rope.

6. The eyelid opening device according to claim 5, characterized in that, The connecting rope is a closed loop structure, and the connecting rope passes through the interior of the second fixing block, the through groove and the first fixing block in sequence.

7. The eyelid opening device according to claim 1, characterized in that, The expansion component includes an arc-shaped groove formed at the top of the free end of the eyelid opening blade. A wave plate is fixedly connected to the eyelid opening blade at the position corresponding to the arc-shaped groove. A push rod is inserted between the wave plate and the arc-shaped groove. The push rod has a U-shaped rod structure. A clamp is fixedly connected to the push rod. A buffer pad is fixedly connected to the bottom of the clamp. Symmetrically distributed C-shaped grooves are fixedly connected to the top of the eyelid opening blade at the position corresponding to the push rod.

8. The eyelid opening device according to claim 7, characterized in that, The arc-shaped groove and the wave plate are interlocked to form a circular structure, and the inner diameter of the circular structure is adapted to the outer diameter of the push rod.

9. The eyelid opening device according to claim 7, characterized in that, The wave plate has evenly distributed weakening grooves in its recessed area, and the distance between the bottom of the wave plate and the top of the arc-shaped groove is smaller than the diameter of the push rod.

10. The eyelid opening device according to claim 7, characterized in that, The inner wall dimension of the C-shaped groove is larger than the outer diameter dimension of the push rod, and the opening spacing dimension of the C-shaped groove is smaller than the outer diameter dimension of the push rod.

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