System and method for controlling eyelid opening and closing

Abstract

The present invention discloses a system and method for controlling the degree of eyelid opening and closing. The system includes an external device and an internal device, the external device and the internal device being wirelessly connected. The external device is configured to collect a diagram of the eyelid opening and closing state of a healthy eye, perform a first preprocessing on the diagram to generate a high-frequency current, and transmit electromagnetic wave energy to the internal device based on the high-frequency current. The internal device is configured to generate an alternating current based on the electromagnetic wave energy, perform a second preprocessing on the alternating current to generate a control signal, and control the degree of eyelid opening and closing based on the control signal. The system effectively controls the degree of eyelid opening and closing, improving the degree of automation.

Description

Technical Field

[0001] The present invention relates to the technical field of ophthalmic care, and in particular to a system and method for controlling the degree of eyelid opening and closing. Background Art

[0002] Ptosis refers to the partial or complete loss of function of the levator palpebrae superioris muscle (innervated by the oculomotor nerve) and the Muller muscle (tarsal plate muscle, innervated by the cervical sympathetic nerve), causing the upper eyelid on one or both sides to be significantly lower than the normal position. Unilateral ptosis causes asymmetry of the two eyes, affecting the appearance. In severe cases, the affected eye cannot be opened at all, causing amblyopia and placing a serious burden on the patient's daily life.

[0003] The muscles responsible for opening and closing the eyes are the levator palpebrae superioris, orbicularis oculi, and Müller's muscles. The levator palpebrae superioris muscle originates above the ZINN ring (the common tendon ring, the circular ring where the superior, inferior, lateral, and medial rectus muscles originate), runs along the upper orbital wall above the superior rectus muscle and forward to 3-4 mm above the upper tarsal plate. It is controlled by the oculomotor nerve and is responsible for opening the eyelid. The orbicularis oculi muscle is a thin, oval-shaped muscle centered on the palpebral fissure. It is controlled by the facial nerve and is responsible for closing the eyelid. The Müller's muscle is controlled by the cervical sympathetic nerve and, when contracted, helps widen the palpebral fissure. When the levator palpebrae superioris and Müller's muscles partially or completely lose their function, they remain in a state of relaxation, causing the eyelid to remain closed under the action of the orbicularis oculi, resulting in ptosis.

[0004] Ptosis is primarily treated surgically, with the goal of shortening the levator palpebrae superioris muscle. When the levator palpebrae superioris muscle is too weak to meet surgical requirements, a frontalis muscle suspension or autologous fascia lata suspension should be considered. However, postoperative complications such as recurrence, upper eyelid hysteresis, changes in eyelash curling, incomplete closure, and asymmetry are common. This is primarily due to individual differences in the levator palpebrae superioris muscle strength, making it difficult to control the degree of surgical intervention. Excessive surgery can result in incomplete closure of the operated eye and higher eyelash curling in the operated eye compared to the unaffected eye. Excessive surgery can lead to upper eyelid hysteresis and recurrence.

[0005] For ptosis, the existing technology provides a ptosis frame brace based on polyethylene material. The fixture consists of three parts: a support bracket, an elastic joint and a base. The bracket under the base is firmly fixed to the patient's eye frame and connected to the support frame through an elastic joint. The top of the U-shaped support frame contacts the patient's eyelid to lift and support the patient's upper eyelid and improve the patient's vision obstruction symptoms. The device disclosed in this patent does not have the function of automatic control: the patient puts on the brace and forcibly pulls the upper eyelid open; when the brace is removed, the upper eyelid of the affected eye closes.

[0006] Prior art provides a method for using a micromechanical system to drive the affected eyelid to open and close, achieving synchronized and equal opening and closing of the affected eyelid and the healthy eyelid. The transmission system includes a sleeve, a rotating shaft inserted within the sleeve and pivotally connected to the sleeve, and a first micromotor and a second micromotor for controlling the sleeve and the rotating shaft, respectively. The first micromotor and the second micromotor are both communicatively connected to the terminal processor. The sleeve is connected to the end of the second upper bracket, and both ends of the rotating shaft are connected to the ends of the second lower bracket. The first micromotor and the second micromotor rotate in opposite directions. One end of the rotating shaft is fixed to the frame bone. The device disclosed in this patent uses a micromechanical system to open and close the affected eye, requiring multiple motors and a complex transmission system, resulting in heavy weight and complex control.

[0007] Existing technology provides a method for treating ptosis by using an artificial muscle to replace the contractile function of the levator palpebrae superioris muscle. This artificial muscle is a polyacrylonitrile hydrogel material that can contract or relax, controlled by the pH of a chemical solution. Through surgery, a fibrous network made of this artificial muscle material is sewn to the inner conjunctiva of the upper eyelid at one end, while the other end contacts the cornea. In a weakly acidic environment, the artificial muscle contracts, pulling the upper eyelid open; in a weakly alkaline environment, the artificial muscle relaxes, closing the upper eyelid. The method disclosed in this patent uses an artificial muscle controlled by pH to open and close the tip of the eye on the affected side.

[0008] Conventional solutions all use non-manual means to control the opening and closing degree of the eyelids, but the control methods have the problems of low automation and complex control. Summary of the Invention

[0009] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that it is difficult to master the implementation of manual control of the degree of eyelid opening and closing, and that controlling the degree of eyelid opening and closing by means other than manual means has the defects of low degree of automation and complex control, thereby providing a system and method for controlling the degree of eyelid opening and closing.

[0010] An embodiment of the present invention provides a system for controlling the degree of eyelid opening and closing, comprising: an external device and an internal device, wherein the external device and the internal device are wirelessly connected;

[0011] The external device is used to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmit electromagnetic wave energy to the internal device based on the high-frequency current;

[0012] The in-vivo device is used to generate an alternating current based on the electromagnetic wave energy, perform a second preprocessing on the alternating current to generate a control signal, and control the degree of eyelid opening and closing based on the control signal.

[0013] Optionally, the external device comprises: a glasses body, an image acquisition unit and an image processing unit provided at the glasses body on the healthy eye side, and a wireless energy transmission unit and a wireless energy transmission coil provided at the glasses body on the diseased eye side;

[0014] The image acquisition unit is used to acquire the eyelid opening and closing state image and send the eyelid opening and closing state image to the image processing unit;

[0015] The image processing unit is used to perform image processing on the eyelid opening and closing state image to generate an eyelid opening and closing value, and send the eyelid opening and closing value to the wireless energy transmitting unit;

[0016] The wireless energy transmitting unit is configured to receive the eyelid opening and closing value, modulate the eyelid opening and closing value to generate a modulation signal, generate a high-frequency current based on the modulation signal, and transmit the high-frequency current to the wireless energy transmitting coil;

[0017] The wireless energy transmitting coil is used to transmit the electromagnetic wave energy to the internal device based on the high-frequency current.

[0018] Optionally, the wireless energy sending unit is used to quantify the eyelid opening and closing value, convert it into a binary value, and modulate the binary value to generate the modulated signal.

[0019] Optionally, the external device further comprises: a user adjustment control unit;

[0020] The user adjustment control unit is used to collect the eyelid reaction speed control signal and the power control signal of the diseased eye, and transmit the eyelid reaction speed control signal of the diseased eye to the image processing unit, and transmit the power control signal to the wireless energy transmission unit;

[0021] The image processing unit is further configured to invert the eyelid reaction speed control signal to generate a control signal bandwidth, and transmit the eyelid opening and closing value to the wireless energy transmitting unit based on the control signal bandwidth;

[0022] The wireless energy sending unit is further configured to multiply the modulation signal and the power control signal to generate the high-frequency current.

[0023] Optionally, the external device further includes: a power management unit;

[0024] The power management unit is used to provide an operating voltage to the image acquisition unit, the image processing unit, the wireless energy sending unit, and the wireless energy transmitting coil.

[0025] Optionally, the in-body device comprises: a wireless energy receiving coil, a demodulation filter unit and an electro-induced artificial muscle;

[0026] The wireless energy receiving coil is used to generate an alternating current based on the electromagnetic wave energy and transmit the alternating current to the demodulation and filtering unit;

[0027] The demodulation and filtering unit is used to demodulate the AC current and perform low-pass filtering on the demodulated AC current to generate a control signal;

[0028] The electro-artificial muscle is used to control the degree of eyelid opening and closing based on the control signal.

[0029] Optionally, the in-vivo machine further includes: an energy management unit;

[0030] The energy management unit is connected to the wireless energy receiving coil and the demodulation and filtering unit, and is used to convert the alternating current into a direct current signal voltage power supply, and transmit the direct current voltage power supply to the demodulation and filtering unit.

[0031] In the second aspect of the present application, an external machine is also proposed, which is used to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the eyelid opening and closing state diagram, generate a high-frequency current, and transmit electromagnetic wave energy to the internal machine based on the high-frequency current; wherein, the internal machine is used to generate an alternating current based on the electromagnetic wave energy, perform a second preprocessing on the alternating current, generate a control signal, control the degree of eyelid opening and closing based on the control signal, generate a control signal, and control the degree of eyelid opening and closing based on the control signal.

[0032] In the third aspect of the present application, an in-vivo machine is also proposed, which is used to generate an alternating current based on electromagnetic wave energy, perform a second preprocessing on the alternating current, generate a control signal, and control the degree of eyelid opening and closing based on the control signal, and generate a control signal, and control the degree of eyelid opening and closing based on the control signal; wherein, the electromagnetic wave energy is emitted by an external machine, and the external machine is used to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the eyelid opening and closing state diagram, generate a high-frequency current, and emit electromagnetic wave energy to the in-vivo machine based on the high-frequency current.

[0033] In a fourth aspect of the present application, a method for controlling the degree of eyelid opening and closing is also proposed, comprising:

[0034] The external device collects an eyelid opening and closing state image of a healthy eye, performs a first preprocessing on the eyelid opening and closing state image to generate a high-frequency current, and transmits electromagnetic wave energy to the internal device based on the high-frequency current;

[0035] The in-vivo device generates an alternating current based on the electromagnetic wave energy, performs a second preprocessing on the alternating current to generate a control signal, and controls the opening and closing of the eyelids based on the control signal.

[0036] Optionally, the external device collects an eyelid opening and closing state diagram of a healthy eye, performs a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmits electromagnetic wave energy to the internal device based on the high-frequency current, including:

[0037] The image acquisition unit acquires the eyelid opening and closing state image and sends the eyelid opening and closing state image to the image processing unit;

[0038] The image processing unit performs image processing on the eyelid opening and closing state image to generate an eyelid opening and closing value, and sends the eyelid opening and closing value to the wireless energy transmitting unit;

[0039] The wireless energy transmitting unit receives the eyelid opening and closing value, modulates the eyelid opening and closing value to generate a modulation signal, generates a high-frequency current based on the modulation signal, and transmits the high-frequency current to the wireless energy transmitting coil;

[0040] The wireless energy transmitting coil transmits the electromagnetic wave energy to the internal device based on the high-frequency current.

[0041] Optionally, modulating the eyelid opening and closing value to generate a modulation signal, and generating a high-frequency current based on the modulation signal includes:

[0042] The eyelid opening and closing value is quantized and converted into a binary value, and the binary value is modulated to generate the modulation signal.

[0043] Optionally, it also includes:

[0044] The user adjustment control unit collects an eyelid reaction speed control signal and a power control signal of the diseased eye, transmits the eyelid reaction speed control signal of the diseased eye to the image processing unit, and transmits the power control signal to the wireless energy transmission unit;

[0045] The image processing unit inverts the eyelid reaction speed control signal to generate a control signal bandwidth, and transmits the eyelid opening and closing value to the wireless energy transmitting unit based on the control signal bandwidth;

[0046] The wireless energy transmitting unit multiplies the modulation signal and the power control signal to generate the high-frequency current.

[0047] Optionally, it also includes:

[0048] The power management unit provides an operating voltage to the image acquisition unit, the image processing unit, the wireless energy transmitting unit, and the wireless energy transmitting coil.

[0049] Optionally, the in-vivo device generates an alternating current based on the electromagnetic wave energy, performs a second preprocessing on the alternating current to generate a control signal, and controls eyelid opening and closing based on the control signal, including:

[0050] The wireless energy receiving coil generates an alternating current based on the electromagnetic wave energy, and transmits the alternating current to the demodulation and filtering unit;

[0051] The demodulation and filtering unit demodulates the AC current and performs low-pass filtering on the demodulated AC current to generate a control signal;

[0052] The electro-artificial muscle controls the degree of eyelid opening and closing based on the control signal.

[0053] Optionally, it also includes:

[0054] The energy management unit converts the alternating current into a direct current signal voltage power supply, and transmits the direct current voltage power supply to the demodulation and filtering unit.

[0055] The technical solution of the present invention has the following advantages:

[0056] 1. The present invention provides a system for controlling the degree of eyelid opening and closing. The system automatically collects an eyelid opening and closing state diagram of a healthy eye through an external device, and then performs a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current. Based on the high-frequency current, electromagnetic wave energy is transmitted to an internal device; the internal device is used to generate an alternating current based on the electromagnetic wave energy, and automatically performs a second preprocessing on the alternating current to generate a control signal. The degree of eyelid opening and closing is controlled based on the control signal, thereby improving the degree of automation of controlling the degree of eyelid opening and closing and realizing effective control of the degree of eyelid opening and closing.

[0057] 2. The external device in the present invention is in the form of glasses, which is small and portable, has low power consumption, and improves the user experience. The external device detects the eyelid state of the healthy eye through a camera, and converts this state into electromagnetic wave energy that is sent to the internal device, thereby controlling the opening and closing of the eyelid of the diseased eye, so that both eyes can be opened and closed at the same time.

[0058] 3. The wireless energy transmitting unit in the present invention converts the eyelid opening and closing value into a binary value, and modulates the binary value to generate a high-frequency current, thereby ensuring the normal interaction between the wireless energy transmitting coil and the wireless energy receiving coil, that is, ensuring the normal transmission of the eyelid opening and closing value.

[0059] 4. The present invention adopts a user-adjustable control unit, which adjusts the palpebral fissure height and reaction speed of the affected eye by collecting the eyelid reaction speed control signal and power control signal of the affected eye adjusted by the user, and adjusts the eyelid opening and closing degree and reaction speed of the affected eye, so that the patient's two eyes remain symmetrical.

[0060] 5. The power management unit in the present invention ensures the normal operating voltage of the image acquisition unit, image processing unit, wireless energy transmission unit and wireless energy transmission coil.

[0061] 6. The in-body device of the present invention drives the artificial muscle to control the opening and closing degree of the eyelids through the control signal, and has the characteristics of fast response speed and convenient adjustment. It can make the opening and closing of both eyes synchronized and equal, and realizes effective control of the opening and closing degree of the eyelids.

[0062] 7. The energy management unit in the present invention ensures the normal operating voltage of the demodulation filter unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0064] Figure 1 This is a flow chart of a system for controlling the degree of eyelid opening and closing in Example 1 of the present invention;

[0065] Figure 2 Schematic diagram of the internal device and the external device in Example 1 of the present invention;

[0066] Figure 3 Schematic diagram of the installation positions of the functional units on the external device in Example 1 of the present invention;

[0067] Figure 4 This is a schematic diagram of the connection relationship between the functional units of the external device in Example 1 of the present invention;

[0068] Figure 5 Schematic diagram of the interaction between the functional units of the in-vivo device in Example 1 of the present invention;

[0069] Figure 6 This is a schematic diagram of the installation position of the in-vivo device on the affected eye in Example 1 of the present invention;

[0070] Figure 7 This is a flow chart for maintaining the consistent opening and closing of the healthy eye and the diseased eye in Example 1 of the present invention;

[0071] Figure 8 This is a flow chart of a method for controlling the degree of eyelid opening and closing in Example 2 of the present invention;

[0072] Figure 9 This is a flowchart of step S801 in Example 2 of the present invention;

[0073] Figure 10 This is a flowchart of step S802 in embodiment 2 of the present invention. DETAILED DESCRIPTION

[0074] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0075] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the systems or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present 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.

[0076] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0077] Example 1

[0078] This embodiment provides a system for controlling the degree of eyelid opening and closing. Figure 1-2 As shown, it includes: an external device 1 and an internal device 2, and the external device 1 and the internal device 2 are wirelessly connected;

[0079] The above-mentioned external device 1 is used to collect the eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the above-mentioned eyelid opening and closing state diagram, generate a high-frequency current, and transmit electromagnetic wave energy to the above-mentioned internal device 2 based on the above-mentioned high-frequency current.

[0080] Specifically, the external device 1 is responsible for collecting image signals and transmitting wireless energy. The external device 1 is in the form of glasses.

[0081] The in-body device 2 is configured to generate an alternating current based on the electromagnetic wave energy, perform a second preprocessing on the alternating current, generate a control signal, and control the degree of eyelid opening and closing based on the control signal.

[0082] Among them, the internal machine 2 converts the received wireless energy into the voltage required to drive the electro-artificial muscle to control the degree of eyelid opening and closing. The greater the power received by the internal machine 2, the higher the voltage transmitted to the electro-artificial muscle, the greater the tension generated by the electro-artificial muscle, and the greater the degree of opening of the eyelid of the affected eye; conversely, the degree of opening of the eyelid of the affected eye is smaller.

[0083] The above-mentioned system for controlling the degree of eyelid opening and closing automatically collects the eyelid opening and closing state diagram of a healthy eye through an external device, and then performs a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmits electromagnetic wave energy to the internal device based on the high-frequency current; the internal device is used to generate an alternating current based on the electromagnetic wave energy, automatically performs a second preprocessing on the alternating current to generate a control signal, and controls the degree of eyelid opening and closing based on the control signal, thereby improving the degree of automation of controlling the degree of eyelid opening and closing and realizing effective control of the degree of eyelid opening and closing.

[0084] Preferably, if Figure 3-4 As shown, the external device 1 includes: a glasses body 11, an image acquisition unit 12 and an image processing unit 13 provided at the glasses body 11 on the healthy eye side, and a wireless energy transmission unit 14 and a wireless energy transmission coil 15 provided at the glasses body 11 on the diseased eye side;

[0085] The image acquisition unit 12 is used to acquire the eyelid opening and closing state image and send the eyelid opening and closing state image to the image processing unit 13 .

[0086] Specifically, the image acquisition unit 12 uses a macro wide-angle camera, such as a CCD (Charge-coupled Device) camera, which is installed above the lens of the patient's healthy eye and is responsible for capturing the opening and closing status of the healthy eye.

[0087] The image processing unit 13 is used to perform image processing on the eyelid opening and closing state image to generate an eyelid opening and closing value, and send the eyelid opening and closing value to the wireless energy transmitting unit 14 .

[0088] Specifically, the image processing unit 13 uses an STM32 series microprocessor, and the image processing unit 13 processes the healthy eye (i.e. Figure 2 The eyelid opening and closing status of the healthy eye (A in the figure) was analyzed by image processing to calculate the palpebral fissure width of the healthy eye.

[0089] Among them, the width of the palpebral fissure of an adult is 10-15mm. The image processing unit 13 locates the coordinates of the center of the upper eyelid margin and the center of the lower eyelid margin of the user's healthy eye in the eyelid opening and closing state diagram, and calculates the vertical coordinate difference between the center of the upper eyelid margin and the center of the lower eyelid margin of the user's healthy eye when the eye is fully open, and normalizes the value to 1; when the eyes are closed, the vertical coordinate difference between the upper and lower eyelid margins in the image is normalized to 0, and the degree of eyelid opening and closing is represented by a value K between 0-1 (i.e., the eyelid opening and closing value), 1 represents that the eyelid is fully open, and 0 represents that the eyelid is completely closed. The value between 0 and 1 represents the degree of eyelid opening and closing.

[0090] Furthermore, the smaller the K value is, the smaller the eyelid opening is; and the larger the K value is, the larger the eyelid opening is.

[0091] The above-mentioned wireless energy sending unit 14 is used to receive the above-mentioned eyelid opening and closing value, modulate the above-mentioned eyelid opening and closing value to generate a modulation signal, and generate a high-frequency current based on the above-mentioned modulation signal, and transmit the above-mentioned high-frequency current to the above-mentioned wireless energy transmitting coil 15.

[0092] Specifically, the wireless energy transmitting unit 14 is used to quantify the eyelid opening and closing value, convert it into a binary value, and modulate the binary value to generate the modulated signal.

[0093] Furthermore, the binary value is modulated onto a 13.56 MHz high-frequency current using amplitude shift keying (ASK) or frequency shift keying (FSK), and the high-frequency current drives the wireless transmitting coil.

[0094] The wireless energy transmitting coil 15 is used to transmit the electromagnetic wave energy to the internal device 2 based on the high-frequency current.

[0095] Specifically, the wireless transmitting coil is embedded in the affected eye (i.e. Figure 2 B in the figure represents the diseased eye), and inside the lens of the eyeglass body 11 on the side of the eyeglass body 11, the 13.56MHz high-frequency current output by the wireless energy sending unit 14 drives the wireless transmitting coil to emit electromagnetic wave energy. The electromagnetic wave frequency will resonate with the coil of the in-vivo machine 2, thereby providing energy and control signals to the in-vivo machine 2.

[0096] The above-mentioned external device is in the form of glasses, which is small and portable, with low power consumption, and improves the user experience; and the external device detects the eyelid state of the healthy eye through a camera, and converts this state into electromagnetic wave energy sent to the internal device, thereby controlling the opening and closing of the eyelid of the diseased eye, so that both eyes can be opened and closed at the same time, and the above-mentioned wireless energy sending unit converts the eyelid opening and closing value into a binary value, and modulates the binary value to generate a high-frequency current, thereby ensuring the normal interaction between the wireless energy transmitting coil and the wireless energy receiving coil, that is, ensuring the normal transmission of the eyelid opening and closing value.

[0097] Preferably, if Figure 4 As shown, the above-mentioned external device 1 further includes: a user adjustment control unit 16;

[0098] The user adjustment control unit 16 is used to collect the eyelid reaction speed control signal and the power control signal of the diseased eye, and transmit the eyelid reaction speed control signal of the diseased eye to the image processing unit 13, and transmit the power control signal to the wireless energy transmission unit 14;

[0099] The image processing unit 13 is further configured to invert the eyelid reaction speed control signal to generate a control signal bandwidth, and transmit the eyelid opening and closing value to the wireless energy transmitting unit 14 based on the control signal bandwidth;

[0100] The wireless energy transmitting unit 14 is further configured to multiply the modulation signal and the power control signal to generate the high-frequency current.

[0101] Specifically, the user adjustment control unit 16 includes a sending power adjustment button and a speed adjustment button. The user adjusts the speed adjustment button to keep the opening and closing of the eyelid of the affected eye synchronized with the opening and closing of the eyelid of the healthy eye in time; the user adjusts the power adjustment button to keep the opening and closing of the eyelid of the affected eye and the opening and closing of the eyelid of the healthy eye equal.

[0102] Furthermore, since the degree of opening of each person's eyelids under the same pulling force is different, it is necessary to adjust the transmission power of the external device 1 corresponding to each palpebral fissure height according to the characteristics of each person, so as to adjust the palpebral fissure height of the diseased eye to be the same as the palpebral fissure height of the healthy eye; and then set a transmission power adjustment button on the external device 1, and the user adjusts the palpebral fissure height of the diseased eye, that is, the degree of opening and closing of the eyelid, by adjusting the transmission power of the external device 1, so as to maintain symmetry with the healthy eye.

[0103] Furthermore, if the reaction speed of the affected eye is too fast, which in turn leads to too fast tracking speed, the affected eye will overshoot each time blinking. If the tracking speed is too slow, the reactions of the two eyes will be asymmetric. Therefore, a speed adjustment button for adjusting the speed of the affected eye tracking the healthy eye is provided on the external device 1. By adjusting the button, the energy transmission bandwidth of the glasses of the external device 1 can be adjusted, the reaction speed of the affected eye can be adjusted, the reaction hysteresis of the affected eye can be eliminated, and at the same time, overshoot vibration caused by excessive speed can be avoided. By adjusting the button, the user can control the reaction speed of the affected eye, that is, control the differential term in PID (proportional, integral, differential), calculate the energy bandwidth, that is, the reaction speed of the affected eye is reversed, that is, the energy bandwidth.

[0104] The above-mentioned user adjustment control unit adjusts the palpebral fissure height and reaction speed of the diseased eye by collecting the eyelid reaction speed control signal and power control signal of the diseased eye adjusted by the user, and adjusts the eyelid opening and closing degree and reaction speed of the diseased eye so that the patient's two eyes remain symmetrical.

[0105] Preferably, if Figure 4 As shown, the above-mentioned external device 1 further includes: a power management unit 17;

[0106] The power management unit 17 is used to provide operating voltage to the image acquisition unit 12 , the image processing unit 13 , the wireless energy transmission unit 14 and the wireless energy transmission coil 15 .

[0107] Specifically, the power management unit 17 in the external device 1 provides energy to the internal device 2 by wireless power supply. The external device 1 can be powered by a lithium battery or by light energy in an environment with good lighting conditions.

[0108] Furthermore, the power management unit 17 includes a lithium battery, TI's BQ series lithium battery charge and discharge management circuit and a solar receiver; wherein the lithium battery can be charged by an external dedicated charger. Under normal circumstances, the lithium battery provides power for the operation of the external machine 1. When there is sufficient light, it can automatically switch to the solar receiver unit and power the external machine 1 through light energy.

[0109] The power management unit ensures the normal operating voltage of the image acquisition unit, the image processing unit, the wireless energy transmission unit and the wireless energy transmission coil.

[0110] Preferably, if Figure 5-6 As shown, the in-vivo device 2 includes: a wireless energy receiving coil 21, a demodulation filter unit 22 and an electro-artificial muscle 23;

[0111] The wireless energy receiving coil is used to generate an alternating current based on the electromagnetic wave energy and transmit the alternating current to the demodulation filter unit 22 .

[0112] Specifically, such as Figure 6 As shown, the wireless energy receiving coil 21 is attached to the sclera c of the affected eye, resonating with the wireless energy transmitting coil on the external device 1 glasses, thereby inducing an alternating current inside the coil; wherein, d represents the cornea of ​​the affected eye.

[0113] The demodulation and filtering unit 22 is configured to demodulate the AC current, perform low-pass filtering on the demodulated AC current, generate a control signal, and amplify the control signal.

[0114] Specifically, the current signal in the wireless energy receiving coil 21 is demodulated and low-pass filtered by amplitude shift keying (ASK) or frequency shift keying (FSK) method (i.e., coherent method and / or incoherent method) to obtain a signal for controlling the degree of eyelid opening and closing, i.e., the K value. The demodulated K value signal is amplified and drives the electro-artificial muscle 23.

[0115] Furthermore, the signal demodulation circuit can be implemented by a triode or MOSFET transistor and some discrete components such as resistors, capacitors, and inductors.

[0116] The wireless energy receiving coil 21 and the demodulation filter unit 22 are arranged on a flexible circuit board a, and the flexible circuit board is connected to the electro-artificial muscle 23 via a flexible platinum-iridium alloy wire b.

[0117] The electro-artificial muscle 23 is used to control the opening and closing degree of the eyelid based on the amplified control signal.

[0118] Specifically, the electro-artificial muscle 23 contracts with the size of the applied voltage (i.e., the control signal). The higher the voltage, the greater the degree of contraction. When the voltage is 0, the contraction force disappears, and the electro-artificial muscle 23 contracts and relaxes with the size of the control signal, thereby achieving the purpose of controlling the opening and closing of the eyelids.

[0119] Furthermore, the electro-artificial muscle 23 may be made of materials such as ionic polymer-metal composite (IPMC), shape memory alloy (SMA), piezoelectric ceramic (EAC), etc., and the electro-artificial muscle 23 is set at the diseased eye.

[0120] The above-mentioned in-body machine drives artificial muscles to control the degree of eyelid opening and closing through control signals. It has the characteristics of fast response speed and easy adjustment. It can make the opening and closing of both eyes synchronized and equal, realizing effective control of the degree of eyelid opening and closing.

[0121] Preferably, the in-vivo device 2 further includes: an energy management unit 24;

[0122] The energy management unit 24 is connected to the wireless energy receiving coil 21 and the demodulation and filtering unit 22 , and is configured to convert the AC current into a DC signal voltage power supply, and transmit the DC voltage power supply to the demodulation and filtering unit 22 .

[0123] Specifically, the energy management circuit unit receives the alternating current generated by the wireless energy receiving coil 21, obtains a direct current signal using an AC / DC (alternating current to direct current) converter, and provides a direct current voltage power supply for the demodulation and filtering module.

[0124] The energy management unit ensures the normal operating voltage of the demodulation filter unit.

[0125] like Figure 7As shown, the working process of a system for controlling the opening and closing degree of eyelids is described below through a specific embodiment.

[0126] When the opening and closing state of the healthy eye is detected to change, the camera on the external device takes a picture of the healthy eye and generates an eyelid opening and closing state diagram;

[0127] The microprocessor of the external device analyzes the eyelid opening and closing state diagram and calculates the eyelid opening and closing value, namely the K value;

[0128] The user adjusts the height of the palpebral fissure of the affected eye by adjusting the transmission power of the external device;

[0129] According to the speed at which the affected eye tracks the healthy eye, the user adjusts the reaction speed of the affected eye through the speed adjustment button. The external device then reverses the reaction speed to generate the energy bandwidth to be transmitted.

[0130] The external device wirelessly transmits power to the internal device based on the K value;

[0131] The in-body machine converts the wirelessly received power into a control signal, i.e., the voltage that controls the electro-artificial muscle;

[0132] The electro-artificial muscle generates a pulling force proportional to the K value based on the voltage. Under the pulling force of the artificial muscle, the diseased eye opens to the same degree as the K value, that is, it keeps synchronization with the healthy eye.

[0133] Example 2

[0134] This embodiment provides an external device, which is used to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the eyelid opening and closing state diagram, generate a high-frequency current, and transmit electromagnetic wave energy to the internal device based on the high-frequency current; wherein the internal device is used to generate an alternating current based on the electromagnetic wave energy, perform a second preprocessing on the alternating current, generate a control signal, control the eyelid opening and closing degree based on the control signal, generate a control signal, and control the eyelid opening and closing degree based on the control signal.

[0135] Specifically, the external device is responsible for collecting image signals and transmitting wireless energy, and the external device is in the form of glasses.

[0136] Example 3

[0137] This embodiment provides an external device, and the internal device is used to generate an alternating current based on electromagnetic wave energy, perform a second preprocessing on the above-mentioned alternating current, generate a control signal, and control the degree of eyelid opening and closing based on the above-mentioned control signal; wherein, the above-mentioned electromagnetic wave energy is emitted by the external device, and the external device is used to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the above-mentioned eyelid opening and closing state diagram, generate a high-frequency current, and emit electromagnetic wave energy to the internal device based on the above-mentioned high-frequency current.

[0138] Among them, the in-body machine converts the received wireless energy into the voltage required to drive the electro-artificial muscle to control the degree of eyelid opening and closing. The greater the power received by the in-body machine, the higher the voltage transmitted to the electro-artificial muscle, the greater the tension generated by the electro-artificial muscle, and the greater the degree of opening of the eyelid of the affected eye; conversely, the degree of opening of the eyelid of the affected eye is smaller.

[0139] Example 4

[0140] This embodiment provides a method for controlling the degree of eyelid opening and closing. Figure 8 Shown, including:

[0141] S801. The external device collects an eyelid opening and closing state diagram of a healthy eye, performs a first preprocessing on the eyelid opening and closing state diagram, generates a high-frequency current, and transmits electromagnetic wave energy to the internal device based on the high-frequency current.

[0142] Specifically, the external device is responsible for collecting image signals and transmitting wireless energy.

[0143] S802. The in-vivo device generates an alternating current based on the electromagnetic wave energy, performs a second preprocessing on the alternating current to generate a control signal, and controls the opening and closing of the eyelids based on the control signal.

[0144] Among them, the in-body machine converts the received wireless energy into the voltage required to drive the electro-artificial muscle to control the degree of eyelid opening and closing. The greater the power received by the in-body machine, the higher the voltage transmitted to the electro-artificial muscle, the greater the tension generated by the electro-artificial muscle, and the greater the degree of opening of the eyelid of the affected eye; conversely, the degree of opening of the eyelid of the affected eye is smaller.

[0145] The above-mentioned method for controlling the degree of eyelid opening and closing automatically collects the eyelid opening and closing state diagram of a healthy eye through an external device, and then performs a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmits electromagnetic wave energy to the internal device based on the high-frequency current; the internal device is used to generate an alternating current based on the electromagnetic wave energy, and automatically performs a second preprocessing on the alternating current to generate a control signal, and controls the degree of eyelid opening and closing based on the control signal, thereby improving the degree of automation of controlling the degree of eyelid opening and closing and realizing effective control of the degree of eyelid opening and closing.

[0146] Preferably, if Figure 8 As shown, in step S801, the external device collects an eyelid opening and closing state diagram of a healthy eye, performs a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmits electromagnetic wave energy to the internal device based on the high-frequency current, including:

[0147] S8011. The image acquisition unit acquires the eyelid opening and closing state image and sends the eyelid opening and closing state image to the image processing unit.

[0148] Specifically, the image acquisition unit uses a macro wide-angle camera, such as a CCD (Charge-coupled Device) camera, which is installed above the lens of the patient's healthy eye and is responsible for capturing the opening and closing status of the healthy eye.

[0149] S8012. The image processing unit performs image processing on the eyelid opening and closing state image to generate an eyelid opening and closing value, and sends the eyelid opening and closing value to the wireless energy transmitting unit.

[0150] Specifically, the image processing unit uses an STM32 series microprocessor, and the image processing unit performs image processing and analysis on the eyelid opening and closing state of the healthy eye (i.e., the healthy eye) captured by the camera, and calculates the palpebral fissure width of the healthy eye.

[0151] Among them, the width of the palpebral fissure of an adult is 10-15mm. The image processing unit locates the coordinates of the center of the upper eyelid margin and the center of the lower eyelid margin of the user's healthy eye in the eyelid opening and closing state diagram, and calculates the vertical coordinate difference between the center of the upper eyelid margin and the center of the lower eyelid margin of the user's healthy eye when the eye is fully open, and normalizes the value to 1; when the eyes are closed, the vertical coordinate difference between the upper and lower eyelid margins in the image is normalized to 0. The degree of eyelid opening and closing is represented by a value K between 0 and 1 (i.e., the eyelid opening and closing value), 1 represents that the eyelid is fully open, and 0 represents that the eyelid is completely closed. The value between 0 and 1 represents the degree of eyelid opening and closing.

[0152] Furthermore, the smaller the K value is, the smaller the eyelid opening is; and the larger the K value is, the larger the eyelid opening is.

[0153] S8013. The wireless energy transmitting unit receives the eyelid opening and closing value, modulates the eyelid opening and closing value to generate a modulation signal, generates a high-frequency current based on the modulation signal, and transmits the high-frequency current to the wireless energy transmitting coil.

[0154] Specifically, the above-mentioned eyelid opening and closing values ​​are modulated to generate a modulation signal, and a high-frequency current is generated based on the above-mentioned modulation signal, including: quantizing the above-mentioned eyelid opening and closing values, converting them into binary values, and modulating the above-mentioned binary values ​​to generate the above-mentioned modulation signal.

[0155] Furthermore, the binary value is modulated onto a 13.56 MHz high-frequency current using amplitude shift keying (ASK) or frequency shift keying (FSK), and the high-frequency current drives the wireless transmitting coil.

[0156] S8014. The wireless energy transmitting coil transmits the electromagnetic wave energy to the internal device based on the high-frequency current.

[0157] Specifically, the wireless transmitting coil is embedded in the lens of the eyeglass body on the side of the affected eye (i.e., the diseased eye). The 13.56MHz high-frequency current output by the wireless energy sending unit drives the wireless transmitting coil to emit electromagnetic wave energy. The electromagnetic wave frequency will resonate with the coil of the internal machine, thereby providing energy and control signals to the internal machine.

[0158] Preferably, it also includes:

[0159] The user adjustment control unit collects the eyelid reaction speed control signal and the power control signal of the diseased eye, transmits the eyelid reaction speed control signal of the diseased eye to the image processing unit, and transmits the power control signal to the wireless energy transmission unit;

[0160] The image processing unit inverts the eyelid reaction speed control signal to generate a control signal bandwidth, and transmits the eyelid opening and closing value to the wireless energy transmitting unit based on the control signal bandwidth;

[0161] The wireless energy transmitting unit multiplies the modulation signal and the power control signal to generate the high-frequency current.

[0162] Specifically, the user-adjustable control unit includes a sending power adjustment button and a speed adjustment button. The user adjusts the speed adjustment button to synchronize the opening and closing of the eyelid of the affected eye with the opening and closing of the eyelid of the healthy eye in time; the user adjusts the power adjustment button to keep the opening and closing of the eyelid of the affected eye equal to the opening and closing of the eyelid of the healthy eye.

[0163] Furthermore, since the degree of opening of each person's eyelids under the same pulling force is different, it is necessary to adjust the transmission power of the external device corresponding to each palpebral fissure height according to the characteristics of each person, so as to adjust the palpebral fissure height of the affected eye to be the same as that of the healthy eye; and then set a transmission power adjustment button on the external device, and the user adjusts the palpebral fissure height of the affected eye, that is, the degree of opening and closing of the eyelid, by adjusting the transmission power of the external device glasses, so as to maintain symmetry with the healthy eye.

[0164] Furthermore, if the reaction speed of the affected eye is too fast, which in turn leads to too fast tracking speed, the affected eye will overshoot each time blinking. If the tracking speed is too slow, the reactions of the two eyes will be asymmetric. Therefore, a speed adjustment button for adjusting the speed of the affected eye tracking the healthy eye is provided on the external machine. By adjusting this button, the energy transmission bandwidth of the external machine glasses can be adjusted, the reaction speed of the affected eye can be adjusted, the reaction hysteresis of the affected eye can be eliminated, and at the same time, overshoot vibration caused by excessive speed can be avoided. By adjusting the button, the user can control the reaction speed of the affected eye, that is, control the differential term in PID (proportional, integral, differential), calculate the energy bandwidth, that is, the reaction speed of the affected eye is reversed, that is, the energy bandwidth.

[0165] Preferably, it also includes:

[0166] The power management unit provides operating voltage to the image acquisition unit, the image processing unit, the wireless energy transmitting unit and the wireless energy transmitting coil.

[0167] Specifically, the power management unit in the external device uses wireless power supply to provide energy to the internal device. The external device can be powered by a lithium battery or by light energy in an environment with good lighting conditions.

[0168] Furthermore, the power management unit includes a lithium battery, TI's BQ series lithium battery charge and discharge management circuit, and a solar receiver; wherein the lithium battery can be charged through an external dedicated charger. Under normal circumstances, the lithium battery provides power for the operation of the external device. When there is sufficient light, it can automatically switch to the solar receiver unit and power the external device through light energy.

[0169] Preferably, in step S802, the internal device generates an alternating current based on the electromagnetic wave energy, performs a second preprocessing on the alternating current to generate a control signal, and controls the eyelid opening and closing based on the control signal, including:

[0170] S8021. The wireless energy receiving coil generates an alternating current based on the electromagnetic wave energy, and transmits the alternating current to the demodulation and filtering unit.

[0171] Specifically, the wireless energy receiving coil is attached to the sclera of the affected eye, resonating with the wireless energy transmitting coil on the external glasses, thereby inducing an alternating current inside the coil.

[0172] S8022. The demodulation and filtering unit demodulates the AC current, performs low-pass filtering on the demodulated AC current, and generates a control signal.

[0173] Specifically, the current signal in the wireless energy receiving coil is demodulated and low-pass filtered using amplitude shift keying (ASK) or frequency shift keying (FSK) methods (coherent and / or incoherent methods) to obtain a signal that controls the degree of eyelid opening and closing, namely the K value. The demodulated K value signal is amplified and then drives the electro-artificial muscle.

[0174] S8023. The electro-artificial muscle controls the degree of eyelid opening and closing based on the control signal.

[0175] Specifically, the electro-artificial muscle contracts with the size of the applied voltage (i.e., the control signal). The higher the voltage, the greater the degree of contraction. When the voltage is 0, the contraction force disappears, and the electro-artificial muscle contracts and relaxes with the size of the control signal, achieving the purpose of controlling the opening and closing of the eyelids.

[0176] Furthermore, the electro-artificial muscle can be made of materials such as ionic polymer-metal composite (IPMC), shape memory alloy (SMA), piezoelectric ceramic (EAC), etc., and the electro-artificial muscle is set in the diseased eye.

[0177] Preferably, it also includes:

[0178] The energy management unit converts the AC current into a DC signal voltage power supply, and transmits the DC voltage power supply to the demodulation and filtering unit.

[0179] Specifically, the energy management circuit unit receives the alternating current generated by the wireless energy receiving coil, obtains a direct current signal using an AC / DC (alternating current to direct current) converter, and provides a direct current voltage power supply for the demodulation and filtering module.

[0180] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A system for controlling the opening and closing of eyelids, characterized in that: include: An external device and an internal device; wherein the external device and the internal device are wirelessly connected; The external device is used to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmit electromagnetic wave energy to the internal device based on the high-frequency current; The in-vivo device is configured to generate an alternating current based on the electromagnetic wave energy, perform a second preprocessing on the alternating current to generate a control signal, and control the degree of eyelid opening and closing based on the control signal; The external device is also used to collect the eyelid reaction speed control signal and the power control signal of the diseased eye, and the eyelid reaction speed control signal and the power control signal are used to generate the high-frequency current.

2. The system for controlling the opening and closing of eyelids according to claim 1, characterized in that: The external device includes: a glasses body, an image acquisition unit and an image processing unit arranged at the glasses body on the healthy eye side, and a wireless energy transmission unit and a wireless energy transmission coil arranged at the glasses body on the diseased eye side; The image acquisition unit is used to acquire the eyelid opening and closing state image and send the eyelid opening and closing state image to the image processing unit; The image processing unit is used to perform image processing on the eyelid opening and closing state image to generate an eyelid opening and closing value, and send the eyelid opening and closing value to the wireless energy transmitting unit; The wireless energy transmitting unit is configured to receive the eyelid opening and closing value, modulate the eyelid opening and closing value to generate a modulation signal, generate a high-frequency current based on the modulation signal, and transmit the high-frequency current to the wireless energy transmitting coil; The wireless energy transmitting coil is used to transmit the electromagnetic wave energy to the internal device based on the high-frequency current.

3. The system for controlling the opening and closing of eyelids according to claim 2, characterized in that: The wireless energy sending unit is used to quantify the eyelid opening and closing value, convert it into a binary value, and modulate the binary value to generate the modulated signal.

4. The system for controlling the opening and closing of eyelids according to claim 2, wherein: The external device further comprises: a user adjustment control unit; The user adjustment control unit is used to collect the eyelid reaction speed control signal and the power control signal of the diseased eye, and transmit the eyelid reaction speed control signal of the diseased eye to the image processing unit, and transmit the power control signal to the wireless energy transmission unit; The image processing unit is further configured to invert the eyelid reaction speed control signal to generate a control signal bandwidth, and transmit the eyelid opening and closing value to the wireless energy transmitting unit based on the control signal bandwidth; The wireless energy sending unit is further configured to multiply the modulation signal and the power control signal to generate the high-frequency current.

5. The system for controlling the opening and closing of eyelids according to claim 2, characterized in that: The external device further includes: a power management unit; The power management unit is used to provide an operating voltage to the image acquisition unit, the image processing unit, the wireless energy sending unit and the wireless energy transmitting coil.

6. The system for controlling the opening and closing of eyelids according to claim 1, characterized in that: The in-body device comprises: a wireless energy receiving coil, a demodulation filter unit and an electro-induced artificial muscle; The wireless energy receiving coil is used to generate an alternating current based on the electromagnetic wave energy and transmit the alternating current to the demodulation and filtering unit; The demodulation and filtering unit is used to demodulate the AC current and perform low-pass filtering on the demodulated AC current to generate a control signal; The electro-artificial muscle is used to control the degree of eyelid opening and closing based on the control signal.

7. The system for controlling the opening and closing of eyelids according to claim 6, characterized in that: The in-vivo machine further includes: an energy management unit; The energy management unit is connected to the wireless energy receiving coil and the demodulation and filtering unit, and is used to convert the alternating current into a direct current signal voltage power supply, and transmit the direct current voltage power supply to the demodulation and filtering unit.

8. An external device, characterized in that: The external device is used to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmit electromagnetic wave energy to the internal device based on the high-frequency current; wherein the internal device is used to generate an alternating current based on the electromagnetic wave energy, perform a second preprocessing on the alternating current to generate a control signal, control the degree of eyelid opening and closing based on the control signal, generate a control signal, and control the degree of eyelid opening and closing based on the control signal; The external device is also used to collect the eyelid reaction speed control signal and the power control signal of the diseased eye, and the eyelid reaction speed control signal and the power control signal are used to generate the high-frequency current.

9. An in-body device, characterized in that: The internal device is configured to generate an alternating current based on electromagnetic wave energy, perform a second preprocessing on the alternating current to generate a control signal, and control the degree of eyelid opening and closing based on the control signal; wherein the electromagnetic wave energy is emitted by an external device, the external device is configured to collect an eyelid opening and closing state diagram of a healthy eye, perform a first preprocessing on the eyelid opening and closing state diagram to generate a high-frequency current, and transmit electromagnetic wave energy to the internal device based on the high-frequency current; The external device is also used to collect the eyelid reaction speed control signal and the power control signal of the diseased eye, and the eyelid reaction speed control signal and the power control signal are used to generate the high-frequency current.

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