Ophthalmologic postoperative eye rubbing prevention safety protection device

Abstract

The invention relates to the technical field of medical instruments, in particular to an ophthalmologic postoperative eye rubbing prevention safety protection device which comprises a carrier, inner frames and outer frames are symmetrically arranged on the two sides of the carrier, elastic parts are arranged between the inner frames and the outer frames, the inner frames are fixedly connected with the carrier, and the outer frames are rotationally connected with the carrier; the sides, away from the carrier, of the inner frames are provided with attaching blocks, the sides, away from the inner frames, of the outer frames are rotationally connected with isolation hoods, and fixing mechanisms used for fixing the inner frames to the eye sockets of the patient are arranged between the attaching blocks. According to the invention, effective physical isolation can be realized, and meanwhile, the wearing comfort is improved, so that eye rubbing impulsion caused by discomfort of a patient is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a postoperative eye care safety device to prevent eye rubbing. Background Technology

[0002] Following various ophthalmic surgeries (such as phacoemulsification cataract surgery, corneal refractive surgery, corneal transplantation, vitreoretinal surgery, etc.), protecting the operated eye from external damage is crucial for ensuring surgical outcomes, promoting corneal or incision healing, and preventing complications (such as incision dehiscence, corneal flap displacement, graft detachment, infection, etc.). Postoperatively, patients often experience discomfort such as foreign body sensation, dryness, and itching after anesthesia wears off, or unconsciously rub their eyes while asleep, leading to a very high risk of mechanical damage. Therefore, effective physical protection measures are urgently needed clinically to isolate direct contact between hands and the operated eye during the critical postoperative recovery period (usually several days to several weeks).

[0003] Currently, the commonly used postoperative eye protection methods in clinical practice mainly include the following two categories:

[0004] Traditional rigid eye masks: These are mostly hemispherical covers made of plastic or metal, fixed to the outside of the eye socket by a headband. They mainly rely on a physical barrier to prevent direct hand contact, but the cover often does not fit tightly to the face, and the hard material can easily cause pressure or discomfort when the patient sleeps on their side.

[0005] Elastic bandage or gauze dressing: After covering the operated eye with sterile gauze, secure it with medical tape or an elastic bandage. While this method achieves complete coverage, it creates a closed environment, not only completely obstructing vision and affecting daily life and psychological adaptation, but also hindering the normal evaporation and balance of tears on the ocular surface. Prolonged wear can easily lead to increased dryness in the operated eye, or conversely, local dampness due to sweat accumulation, further aggravating discomfort for patients who may already be experiencing dry eyes or discomfort after surgery.

[0006] However, patients often experience normal reactions during the postoperative recovery period, such as a foreign body sensation, itching, or mild pain. If the protective device introduces additional discomfort such as persistent dryness, stuffiness, or dampness, it will significantly exacerbate the patient's overall discomfort. This complex discomfort can easily lead to patients subconsciously rubbing their eyes, scratching, or frequently adjusting or removing the protective device, thereby unintentionally increasing the risk of damage to the operated eye while awake or asleep.

[0007] Given the shortcomings of existing technologies, there is an urgent need for a new type of postoperative ophthalmic safety protection device to prevent eye rubbing. This device should not only ensure effective isolation of physical contact but also improve wearing comfort, reduce secondary risks caused by discomfort, and achieve safer and more humane postoperative care. Summary of the Invention

[0008] To address the aforementioned issues, this invention provides a postoperative eye-rubbing safety protection device that provides effective physical isolation while enhancing wearing comfort, thereby reducing the urge to rub the eyes caused by discomfort.

[0009] To achieve the above objectives, the technical solution of the present invention is as follows: a postoperative ophthalmic safety protection device for preventing eye rubbing, comprising a carrier, with an inner frame and an outer frame symmetrically arranged on both sides of the carrier, and an elastic element provided between the inner frame and the outer frame, the inner frame being fixedly connected to the carrier, and the outer frame being rotatably connected to the carrier; a patch is provided on the side of the inner frame away from the carrier, and an isolation cover is rotatably connected on the side of the outer frame away from the inner frame, and a fixing mechanism for fixing the inner frame to the patient's eye socket is provided between the patches.

[0010] The technical principles of the above solution are as follows:

[0011] The inner frame is securely and gently fixed to the bony orbital region around the patient's operated eye using a fixation mechanism.

[0012] The inner and outer frames are connected by an elastic element. Because the outer frame is rotatably connected to the carrier, it can shift under external force. When worn, the elastic element is in a naturally extended state, maintaining a flexible gap between the outer and inner frames. This gap forms a three-dimensional ventilation channel around the eyes, allowing air to circulate naturally within this space.

[0013] The isolation shield is rotatably connected to the inner frame and can cover the area in front of the eye during surgery. Its main function is to prevent fingers from directly touching the eyeball or eyelid. Because the inner frame is firmly fixed, the position of the isolation shield is relatively stable. When the patient unconsciously raises their hand near their eye, the hand will first touch the outer frame or the outside of the isolation shield. At this time, the outer frame can buffer and dissipate some of the contact force through rotation and deformation of elastic elements, preventing the impact from being directly transmitted to the inner frame and eye socket, thus achieving dynamic and flexible physical isolation.

[0014] The above approach has the following beneficial effects:

[0015] 1. In this design, the elastic gap between the inner and outer frames forms the core ventilation and heat dissipation zone, solving the problems of stuffiness associated with traditional rigid eye masks and the complete closure caused by bandages. Sweat around the eyes evaporates more easily, creating a tear film evaporation environment closer to normal physiological conditions, effectively reducing additional discomfort such as dryness, dampness, and stuffiness caused by the protective device itself, and greatly improving wearing comfort.

[0016] 2. In this design, the isolation shield acts as a direct barrier, reliably preventing direct contact between the operated eye and objects such as fingers or blankets. The rotating and elastic cushioning design of the outer frame disperses and buffers the pressure from accidental touches or when lying on one's side, rather than rigidly resisting or compressing the eyeball, thus providing protection while reducing pressure-related discomfort.

[0017] 3. This design incorporates elastic components and a rotating connection, allowing the device to adapt to different facial contours and swelling levels. The fixing mechanism ensures stability, while the elastic structure prevents excessive tightness.

[0018] Furthermore, the fixing mechanism includes an elastic band with pull wires on both sides; each of the blocks has a groove, and each groove has a slider slidably connected to it, with one end of each slider fixedly connected to the pull wire; each groove has several adsorption holes connected to the side away from the elastic band, and the adsorption holes are arranged along the inner contour of the inner frame.

[0019] Beneficial effects: When wearing the device, stretch the elastic band and secure it to the head. The elastic band's contraction and recovery force will simultaneously pull the two strings. The strings drive the sliders to slide away from the bridge of the nose (i.e., the outer side of the eye socket) within their respective grooves. Because the grooves are sealed except for the suction holes, the movement of the sliders creates a local vacuum in the space they originally occupied within the grooves, thereby generating a uniform negative pressure suction force on the skin contact surface through all the suction holes. This suction force allows the inner frame to adhere firmly and gently to the skin around the eye sockets, thus securing the device.

[0020] Furthermore, each of the blocks is equipped with a ventilation mechanism; the ventilation mechanism includes a bellows, with a cavity inside the bellows, and a rotating shaft rotatably connected inside the cavity. Several discs are coaxially fixedly connected to the rotating shaft, with a preset distance between adjacent discs. One end of the rotating shaft is equipped with a power mechanism for driving the rotating shaft to rotate. The rotating shaft has a hollow groove and several air inlets, which are located between adjacent discs and are all connected to the hollow groove. One end of the hollow groove is connected to a ventilation pipe, and the end of the ventilation pipe away from the hollow groove is located between the inner frame and the outer frame; the cavity is also connected to an air intake channel.

[0021] Beneficial effects: When the patient feels stuffy and uncomfortable, the power mechanism can be activated to drive the rotating shaft and disc to rotate at high speed. The rotating disc, through the viscous shearing action between its surface and the air, continuously pumps air from the edge of the disc towards the center of the rotating shaft, creating a localized low-pressure area. Under the pressure difference, fresh outside air is drawn into the cavity through the air inlet channel and, guided by the disc assembly, converges and enters the hollow groove of the rotating shaft through the air inlet, forming a concentrated airflow. This airflow is then directionally and evenly delivered through the ventilation duct to the surrounding ventilation channel between the inner and outer frames, thereby creating a continuous and controllable air circulation environment around the eyes.

[0022] Furthermore, the air intake channel is connected to the cavity along the tangential direction.

[0023] Beneficial effects: When the power mechanism starts and outside air is drawn in through the air intake channel, the airflow gains an initial rotational momentum along the circumference of the cavity the instant it enters due to the tangential design of the inlet. This causes the incoming air to not diffuse randomly, but rather to rapidly form a rotating vortex or cyclone within the cavity. This pre-organized rotating airflow, when it encounters the high-speed rotating disk assembly, creates a synergistic effect, greatly enhancing the efficiency of the disks in pumping air from the edge to the center (i.e., towards the shaft and air intake).

[0024] Furthermore, the preset distance is no more than twice the thickness of the air boundary layer.

[0025] Beneficial effects: When the spacing between adjacent disks is strictly controlled to be no more than twice the boundary layer thickness, the rotating boundary layers formed on the surfaces of the two disks highly overlap or almost completely connect in the axial space. This means that the entire gap region between the two disks is in a state of high-speed rotating airflow effectively driven by the viscous force of the disk surface, ensuring that the viscous shear driving force of the disk rotation on the air covers the entire flow channel between the disks, with no dead zones.

[0026] Furthermore, the power mechanism includes a movable slot opened inside the bellows, and a lever plate, a crank rod, a first connecting rod, a second connecting rod, and a fixed block are arranged in the movable slot; the lever plate is slidably engaged with the movable slot, one end of the lever plate is fixedly connected to one end of the crank rod, the other end of the crank rod is rotatably connected to the fixed block, and the fixed block is fixedly connected to the inner wall of the movable slot; one end of the first connecting rod is rotatably connected to the crank rod, the other end of the first connecting rod is rotatably connected to the second connecting rod, and the end of the second connecting rod away from the first connecting rod is coaxially fixedly connected to the rotating shaft.

[0027] Beneficial effects: Patients or caregivers repeatedly press the lever with their fingers, causing it to slide along a set trajectory within the movable groove. The lever drives a crank rod fixedly connected to it, causing it to rotate about its hinge point with the fixed block. The rotation of the crank rod causes a first connecting rod hinged to its other end to produce planar motion, which in turn pushes a second connecting rod hinged to it to swing. Since the second connecting rod is coaxially fixedly connected to the rotating shaft of the ventilation mechanism, the swinging of the second connecting rod is ultimately converted into intermittent or continuous rotation of the rotating shaft (depending on the continuity of the press), thereby driving the coaxially fixed disc assembly to rotate and initiating the ventilation process.

[0028] Furthermore, an elastic membrane is provided between the inner frame and the outer frame, and several ventilation holes are opened on the elastic membrane.

[0029] Beneficial effects: The elastic membrane adds a soft intermediate protective layer between the inner frame (fixation base) and the isolation shield (main barrier). It effectively blocks pollutants such as dust, lint, and tiny flying insects from the environment, preventing them from falling directly onto the eyelid or the inside of the isolation shield through the larger gap between the inner and outer frames. This provides a cleaner and safer microenvironment for the operated eye, making it especially suitable for prolonged wear at home or in non-sterile environments.

[0030] Furthermore, it also includes an adaptive speed limiting mechanism; the adaptive speed limiting mechanism includes a transmission cavity opened in the bellows, a first rack slidingly engaged in the transmission cavity, the first rack meshing with a gear, the gear meshing with a second rack, the second rack slidingly engaged in the transmission cavity; a traction line is provided at the end of the first rack away from the cavity, the traction line is fixedly connected to the elastic membrane, a limit block is provided at the end of the second rack near the cavity, and a return spring is provided at the other end of the second rack, the two ends of the return spring being fixedly connected to the second rack and the inner wall of the transmission cavity respectively, and the limit block is located between any adjacent discs; when the deformation of the elastic membrane exceeds a preset value, the traction line drives the first rack to move, the first rack transmits the displacement to the second rack through the gear, and the second rack pushes the limit block between adjacent discs, increasing the friction force on the discs.

[0031] Beneficial effects: When airflow flows within the cavity between the inner and outer frames, it exerts pressure on the elastic membrane. The greater the airflow velocity, the greater the pressure on the elastic membrane, and the greater its outward expansion deformation.

[0032] The deformation of the elastic membrane causes the first rack to move linearly via the traction line. The movement of the first rack drives the gear meshing with it to rotate, and the rotation of the gear then drives the second rack to move in the opposite direction, overcoming the elastic force of the return spring and gradually pushing the limiting block at its front end into the narrow gap between the high-speed rotating adjacent discs.

[0033] The limiting block (especially its wedge-shaped head) is inserted between the disks, generating sliding friction with the edges of the disks. The deeper the insertion, the greater the contact area and normal pressure, and the greater the frictional resistance torque generated. This resistance torque directly counteracts the torque of the driving shaft, thereby effectively reducing the rotational speed of the shaft and the disks.

[0034] The decrease in shaft speed weakens the pumped airflow, which in turn reduces the pressure on the elastic diaphragm and causes it to deform and recover. Under the action of the return spring, the limit block slightly retracts, reducing friction, and the system automatically stabilizes at a new, lower equilibrium speed.

[0035] This system can sense and respond to airflow intensity in real time, automatically intervening and limiting the airflow speed before it reaches a threshold that might cause patient discomfort or adverse effects on the delicate operated eye (such as corneal incisions or grafts). It ensures that regardless of the initial settings of the ventilation system, the airflow that ultimately reaches the periorbital area is always gentle and safe, eliminating the potential risk of secondary damage from excessive artificial ventilation.

[0036] Furthermore, an elastic layer is provided on the inner side of both the inner frame and the inner side of the patch.

[0037] Beneficial effects: The soft, elastic layer can better fill the microscopic unevenness (such as fine lines, pores, and tiny hairs) between the inner frame, the patch, and the skin surface, forming a tighter and more uniform contact surface.

[0038] Furthermore, the elastic band is equipped with hook and loop fasteners.

[0039] Beneficial effects: One end of the hook and loop fastener (e.g., the hook side) is sewn to one end of the elastic band, while the matching other end (the loop side) is attached to the middle or other end of the elastic band with a larger area. To wear it, the user simply wraps the elastic band around the head, covering and pressing the hook side onto the loop side of the band for quick and easy fastening. By adjusting the overlapping area and position of the hook and loop sides, the effective wrapping length and tightness of the elastic band can be continuously and precisely adjusted. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of an embodiment of the postoperative ophthalmic safety protection device for preventing eye rubbing according to the present invention;

[0041] Figure 2 for Figure 1 Top view of the postoperative eye-rubbing safety protection device in the Department of Ophthalmology;

[0042] Figure 3 for Figure 2 Sectional view along the AA direction;

[0043] Figure 4 for Figure 1 Side view of the central air chamber;

[0044] Figure 5 for Figure 4 Sectional view along the BB direction;

[0045] Figure 6 for Figure 5 A schematic diagram of the structure of the first link in the middle;

[0046] Figure 7 for Figure 5 A magnified view of a portion of point M in the middle.

[0047] The reference numerals in the accompanying drawings include: 1. Elastic band; 2. Inner frame; 3. Carrier; 4. Isolation cover; 5. Outer frame; 6. Bellows; 7. Hook and loop fastener; 8. Elastic membrane; 9. Adhesive block; 10. Elastic element; 11. Ventilation hole; 201. Adsorption hole; 601. Paddle plate; 602. Movable groove; 603. Crank rod; 604. First connecting rod; 605. Second connecting rod; 606. Rotating shaft; 607. Cavity; 608. Disc; 609. Hollow groove; 610. Air inlet; 611. Ventilation pipe; 612. Fixing block; 613. Transmission cavity; 614. First rack; 615. Gear; 616. Second rack; 617. Limiting block. Detailed Implementation

[0048] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0049] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] The following detailed description illustrates the specific implementation method:

[0052] Example:

[0053] As attached Figures 1-7The following describes a postoperative ophthalmic safety device to prevent eye rubbing: It includes a carrier 3 with an inner frame 2 and an outer frame 5 symmetrically arranged on both sides. Preferably, an elastic membrane 8 is bonded and fixed between the inner frame 2 and the outer frame 5, and the elastic membrane 8 has several ventilation holes 11. An elastic element 10 is provided between the inner frame 2 and the outer frame 5, with its two ends ball-jointed to the inner frame 2 and the outer frame 5 respectively. In this embodiment, the elastic element 10 is a telescopic structure with an inner shaft sleeved on an outer shaft. A telescopic groove is provided axially on the outer shaft, allowing the inner shaft to slide within the groove. A spring is fixedly connected between the inner shaft and the inner wall of the telescopic groove, and the inner shaft compresses the spring to achieve telescopic movement. The inner frames 2 are welded and fixed to the carrier 3, and the outer frames 5 are rotatably connected to the carrier 3. A patch 9 is provided on the side of the inner frame 2 away from the carrier 3, and an isolation cover 4 is rotatably connected to the side of the outer frame 5 away from the inner frame 2. The isolation cover 4 is a transparent, lightweight, and breathable mesh, and the side of the isolation cover 4 away from the carrier 3 is detachably fixed to the outer frame 5 via a snap-fit. Preferably, both the inner frame 2 and the inner side of the patch 9 are fixedly connected with an elastic layer.

[0054] A fixing mechanism for securing the inner frame 2 to the patient's eye socket is provided between the patches 9. Specifically, the fixing mechanism includes an elastic band 1, with pull wires fixedly connected to both sides of the elastic band 1; each patch 9 has a groove, and a slider is slidably connected within each groove, with one end of each slider fixedly connected to a pull wire; combined with the attached... Figure 3 As shown, the side of the slide away from the elastic band 1 is connected to several adsorption holes 201, which are arranged along the inner contour of the inner frame 2. In this embodiment, a hook and loop fastener 7 is fixedly connected to the elastic band 1. The elastic band 1 is divided into two sections by the hook and loop fastener 7, and the two sections of the elastic band 1 are fixedly connected to the female hook and loop fastener and the female hook and loop fastener in the hook and loop fastener 7, respectively.

[0055] Preferably, each of the mounting blocks 9 is provided with a ventilation mechanism; the ventilation mechanism includes a wind box 6, and a cavity 607 is opened inside the wind box 6. Preferably, the cavity 607 has a spherical structure, and in some other embodiments, the cavity 607 can have a cylindrical structure. A rotating shaft 606 is rotatably connected inside the cavity 607, and several disks 608 are coaxially fixedly connected to the rotating shaft 606. A preset distance is provided between adjacent disks 608 and between the disks 608 and the inner wall of the cavity 607. The preset distance is not greater than twice the thickness of the air boundary layer. One end of the rotating shaft 606 is provided with a power mechanism for driving the rotating shaft 606 to rotate. Preferably, the power mechanism includes a movable slot 602 opened inside the wind box 6, combined with the attached... Figure 5 and attached Figure 6As shown, the movable groove 602 is equipped with a lever 601, a crank 603, a first connecting rod 604, a second connecting rod 605, and a fixing block 612. The lever 601 is slidably engaged with the movable groove 602. The lever 601 is fixedly connected to one end of the crank 603, and the other end of the crank 603 is rotatably connected to the fixing block 612. The fixing block 612 is fixedly connected to the inner wall of the movable groove 602. One end of the first connecting rod 604 is rotatably connected to the crank 603, and the other end of the first connecting rod 604 is rotatably connected to the second connecting rod 605. The end of the second connecting rod 605 away from the first connecting rod 604 is coaxially fixedly connected to the rotating shaft 606. In some other embodiments, the power mechanism can also be driven by a motor driving the rotating shaft 606 to rotate.

[0056] The rotating shaft 606 has a hollow groove 609 and several air inlets 610. The air inlets 610 are located between adjacent discs 608 and are all connected to the hollow groove 609. One end of the hollow groove 609 is connected to a ventilation pipe 611. The end of the ventilation pipe 611 away from the hollow groove 609 is located between the inner frame 2 and the outer frame 5. The cavity 607 is also connected to an air intake channel.

[0057] Preferably, it also includes an adaptive speed limiting mechanism; the adaptive speed limiting mechanism includes a transmission cavity 613 opened in the bellows 6, a first rack 614 slidably engaged in the transmission cavity 613, the first rack 614 meshing with a gear 615, the gear 615 meshing with a second rack 616, the gear 615 being rotatably connected to the inner wall of the transmission cavity 613, and the second rack 616 being slidably engaged with the transmission cavity 613. A traction line is attached to the end of the first rack 614 away from the cavity 607. The end of the traction line away from the first rack 614 is fixedly connected to the inner side of the elastic membrane 8. A limit block 617 is fixedly connected to the end of the second rack 616 near the cavity 607. A return spring is provided at the other end of the second rack 616. The two ends of the return spring are fixedly connected to the second rack 616 and the inner wall of the transmission cavity 613, respectively. The limit block 617 is located between any adjacent disks 608. When the deformation of the elastic membrane 8 exceeds a preset value, the traction line drives the first rack 614 to move. The first rack 614 transmits the displacement to the second rack 616 through the gear 615. The second rack 616 pushes the limit block 617 between adjacent disks 608, increasing the friction force on the disks 608.

[0058] The specific implementation process is as follows:

[0059] The patient or caregiver first aligns the carrier 3 of the device with the face, so that the inner frames 2 on both sides fit around the left and right eye sockets respectively.

[0060] Wrap the elastic band 1 around your head and, depending on your head circumference and comfort, secure it to the appropriate tightness by adjusting the overlapping area of ​​the hook and loop fasteners 7.

[0061] After the elastic band 1 is tightened, the pull lines on both sides are pulled, causing the sliders in the grooves of their respective patches 9 to slide outwards towards the outer side of the eye socket.

[0062] The movement of the slider generates negative pressure in the sealed groove. This negative pressure, through multiple adsorption holes 201 arranged along the contour of the inner frame 2, makes the inner frame 2 (through the inner elastic layer) evenly and firmly adsorbed onto the skin of the eye socket, completing the initial comfortable fixation.

[0063] When worn, the annular gap formed by the elastic element 10 between the inner frame 2 and the outer frame 5, together with the vent holes 11 on the elastic membrane 8, constitutes the basic passive ventilation and heat dissipation channel.

[0064] When patients feel stuffy and moist around their eyes, they can repeatedly press the lever 601 located outside the movable slot 602 of the bellows 6 with their fingers.

[0065] The reciprocating motion of the lever 601 drives the crank 603 to rotate around the fixed block 612, which in turn drives the second link 605 to swing through the first link 604. Since the second link 605 is coaxially fixed with the rotating shaft 606, the rotating shaft 606 begins to rotate accordingly.

[0066] The rotating shaft 606 drives multiple disks 608 on it to rotate at high speed within the cavity 607. The disks 608 utilize the viscous force with the air to pump air from the edges to the center. Outside air is drawn into the cavity 607 through the tangential air intake channel and forms a swirling flow under the action of the disks 608. This swirling flow then efficiently merges into the hollow groove 609 of the rotating shaft 606 through the air inlet 610 located between the disks 608.

[0067] The collected airflow is guided through the hollow groove 609 into the ventilation duct 611, and is finally directed to the annular ventilation gap between the inner frame 2 and the outer frame 5. The airflow flows in this gap and acts evenly around the eyes through the vents 11 on the elastic membrane 8, achieving active cooling and dehumidification and improving comfort.

[0068] During active ventilation, the airflow delivered to the gap between the inner frame 2 and the outer frame 5 will exert pressure on the elastic membrane 8, causing it to expand and deform slightly outward.

[0069] When the airflow speed is too high, causing the deformation of the elastic membrane 8 to exceed the preset safety value, the traction line fixed to the inside of the elastic membrane 8 is tightened.

[0070] The traction line pulls the first rack 614 to move within the transmission cavity 613, driving the gear 615 meshing with it to rotate. The gear 615 drives the second rack 616 to move in the opposite direction, overcoming the resistance of the return spring, and gradually pushing the wedge-shaped limiting block 617 fixed at its front end into the space between the high-speed rotating adjacent disks 608.

[0071] The limiting block 617 generates frictional resistance with the edge of the disc 608, effectively reducing the rotational speed of the shaft 606 and thus weakening the airflow output. As the airflow weakens, the elastic membrane 8 recovers its deformation, and the limiting block 617 retracts under the action of the return spring, reducing friction. The system automatically balances at a safe and comfortable airflow speed, achieving imperceptible intelligent airflow adjustment.

[0072] Throughout the wearing period, the shield 4 acts as the main physical barrier, effectively preventing direct hand contact.

[0073] If the patient unconsciously raises their hand to touch the outer frame 5 or the pillow presses on the outer frame 5 while lying on their side, the outer frame 5 can rotate relative to the carrier 3 and buffer the impact force through the deformation of the elastic element 10, thus preventing the pressure from being directly transmitted to the eye socket and the inner frame 2.

[0074] The elastic membrane 8 connecting the inner and outer frames 5 allows air to circulate while also elastically deforming with the relative movement of the inner and outer frames 5, thus maintaining the continuity of protection (blocking dust) without affecting the dynamic buffering function of the device.

[0075] The elastic layer inside the inner frame 2 and the patch 9 continuously provides soft cushioning, disperses pressure, and ensures contact comfort during long-term wear.

[0076] When a patient needs to instill eye drops, there is no need to remove the entire protective device. Simply use your finger to open the latch between the isolation shield 4 on the operated eye side and the outer frame 5, and then gently rotate the isolation shield 4 upwards or to the side to open it, thus safely exposing the operated eye area for the instillation procedure.

[0077] After the infusion is complete, the isolation cover 4 can be easily rotated back into place and re-secured with the clips, immediately restoring full-body physical protection. The entire operation is simple and quick, greatly reducing the risk of loosening, adsorption failure, or accidental contact with the eyes due to repeated donning and doffing of the device.

[0078] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A postoperative eye care safety device to prevent eye rubbing, characterized in that, Includes a carrier (3), with an inner frame (2) and an outer frame (5) symmetrically arranged on both sides of the carrier (3). An elastic element (10) is provided between the inner frame (2) and the outer frame (5). The inner frame (2) is fixedly connected to the carrier (3), and the outer frame (5) is rotatably connected to the carrier (3). A patch (9) is provided on the side of the inner frame (2) away from the carrier (3), and an isolation cover (4) is rotatably connected on the side of the outer frame (5) away from the inner frame (2). A fixing mechanism for fixing the inner frame (2) to the patient's eye socket is provided between the patches (9).

2. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 1, characterized in that, The fixing mechanism includes an elastic band (1), with pull wires on both sides of the elastic band (1); each of the blocks (9) has a groove, and each of the grooves has a slider connected to it, with one end of the slider fixedly connected to the pull wire; each of the grooves has several adsorption holes (201) connected to the side away from the elastic band (1), and the adsorption holes (201) are arranged along the inner contour of the inner frame (2).

3. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 2, characterized in that, Ventilation mechanisms are provided on each of the blocks (9); the ventilation mechanisms include a bellows (6), a cavity (607) is provided inside the bellows (6), a rotating shaft (606) is rotatably connected inside the cavity (607), a number of discs (608) are coaxially fixedly connected on the rotating shaft (606), a preset distance is provided between adjacent discs (608), a power mechanism for driving the rotating shaft (606) to rotate is provided at one end of the rotating shaft (606), a hollow groove (609) and a number of air inlets (610) are provided inside the rotating shaft (606), the air inlets (610) are located between adjacent discs (608), the air inlets (610) are all connected to the hollow groove (609), a ventilation pipe (611) is connected to one end of the hollow groove (609), and the end of the ventilation pipe (611) away from the hollow groove (609) is located between the inner frame (2) and the outer frame (5); the cavity (607) is also connected to an air inlet channel.

4. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 3, characterized in that, The air inlet channel is connected to the cavity (607) along the tangential direction.

5. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 4, characterized in that, The preset distance is no more than twice the thickness of the air boundary layer.

6. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 5, characterized in that, The power mechanism includes a movable slot (602) opened in the bellows (6). The movable slot (602) is provided with a lever (601), a crank (603), a first connecting rod (604), a second connecting rod (605), and a fixed block (612). The lever (601) is slidably engaged with the movable slot (602). The lever (601) is fixedly connected to one end of the crank (603). The other end of the crank (603) is rotatably connected to the fixed block (612). The fixed block (612) is fixedly connected to the inner wall of the movable slot (602). One end of the first connecting rod (604) is rotatably connected to the crank (603). The other end of the first connecting rod (604) is rotatably connected to the second connecting rod (605). The end of the second connecting rod (605) away from the first connecting rod (604) is coaxially fixedly connected to the rotating shaft (606).

7. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 6, characterized in that, An elastic membrane (8) is provided between the inner frame (2) and the outer frame (5), and several ventilation holes (11) are provided on the elastic membrane (8).

8. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 7, characterized in that, It also includes an adaptive speed limiting mechanism; the adaptive speed limiting mechanism includes a transmission cavity (613) opened in the bellows (6), a first rack (614) slidingly engaged in the transmission cavity (613), the first rack (614) meshing with a gear (615), the gear (615) meshing with a second rack (616), the second rack (616) slidingly engaged with the transmission cavity (613); a traction line is provided at the end of the first rack (614) away from the cavity (607), the traction line is fixedly connected to the elastic membrane (8), and a limit block (616) is provided at the end of the second rack (616) near the cavity (607). 7) A return spring is provided at the other end of the second rack (616). The two ends of the return spring are fixedly connected to the inner wall of the second rack (616) and the transmission cavity (613) respectively. The limiting block (617) is located between any adjacent disks (608). When the deformation of the elastic membrane (8) exceeds the preset value, the traction line drives the first rack (614) to move. The first rack (614) transmits the displacement to the second rack (616) through the gear (615). The second rack (616) pushes the limiting block (617) into the space between adjacent disks (608) to increase the friction force on the disk (608).

9. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 8, characterized in that, Both the inner frame (2) and the inner side of the patch (9) are provided with an elastic layer.

10. The postoperative ophthalmic safety device for preventing eye rubbing as described in claim 9, characterized in that, The elastic band (1) is provided with hook and loop fasteners (7).

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