WO2019080664A1

WO2019080664A1 - Corneal contact lens and intraocular illumination system

Info

Publication number: WO2019080664A1
Application number: PCT/CN2018/105778
Authority: WO
Inventors: 杨铭轲
Original assignee: 杨铭轲
Priority date: 2017-10-26
Filing date: 2018-09-14
Publication date: 2019-05-02
Also published as: CN107874901A

Abstract

A corneal contact lens, comprising: a body (1) of the corneal contact lens, a flexible circuit board (2), a wireless power receiving circuit (3) and a light emitting element (4); the flexible circuit board (2), the wireless power receiving circuit (3) and the light emitting element (4) are deployed in a designated area inside the body (1) of the corneal contact lens; the wireless power receiving circuit (3) and the light emitting element (4) are integrated onto the flexible circuit board (2); the wireless power receiving circuit (3) is electrically connected to the light emitting element (4) so as to supply power to the light emitting element (4).

Description

Contact lens and intraocular illumination system

Technical field

The present invention relates to medical devices, and more particularly to contact lenses and intraocular illumination systems.

Background technique

In a variety of ophthalmic examinations and ophthalmic surgery, it is necessary to illuminate the back of the patient's eyes. Generally, puncture holes are used and light sources are introduced into the eyes, usually by cutting the sclera and placing tiny fundus lights from the incision into the eyes. In the vitreous, but this way will cause more trauma to the patient's eyes. Moreover, the existing fundus illumination lamp is mostly a single optical fiber filament, which is connected at one end to the high-intensity light source through a connector, and the other end is introduced into the vitreous of the eye through the support member. After being energized, the light is transmitted through the optical fiber and projected through the vitreous body. To the bottom of the eye that needs to be illuminated, but the choice of the light guide wire for the light source is very high, and the fundus illumination lamp crosses the surgical area and the bacteria area, increasing the risk of infection.

Therefore, the prior art has yet to be improved.

technical problem

The main object of the present invention is to provide a contact lens which aims to solve the technical problem that the existing fundus illumination device has extra trauma to the patient's eyes and has a high risk of eye contamination.

Technical solution

The invention provides a contact lens comprising: a contact lens body, a flexible circuit board, a radio energy receiving circuit and a light-emitting element;

The flexible circuit board, the radio energy receiving circuit and the light emitting element are disposed in the designated area of the contact lens body;

The wireless power receiving circuit and the light emitting element are both integrated on the flexible circuit board;

The wireless power receiving circuit is electrically connected to the light emitting element to supply the light emitting element.

Preferably, the designated area comprises: all or part of a boundary area of the orthographic projection area of the iris on the contact lens body near the pupil on the orthographic projection area on the contact lens body in the user wearing state.

Preferably, the wireless power receiving circuit includes a receiving coil; the receiving coil is coupled to the light emitting element to supply the light emitting element.

Preferably, further comprising a first control circuit; the first control circuit is integrated on the flexible circuit board; the first control circuit is connected between the wireless power receiving circuit and the light emitting element to control the light emitting element light intensity.

Preferably, the illuminating element comprises an OLED and/or an LED having a specified wavelength range; the specified wavelength range comprises a visible wavelength region and/or an infrared wavelength region.

The present invention also provides an intraocular illumination system comprising the above described contact lens, further comprising a power feeding device; the power feeding device is external to the contact lens body to enable the power feeding device to pass radio energy The transmission mode transmits radio energy to the radio energy receiving circuit.

Preferably, the power feeding device comprises a wireless power transmitting circuit and a circuit carrier; the wireless power transmitting circuit is disposed on the circuit carrier; the wireless power transmitting circuit transmits to the wireless power receiving circuit in a specified manner Radio energy.

Preferably, the specified manner includes one of an electromagnetic resonance mode, an electromagnetic induction mode, or a radiation mode.

Preferably, the wireless power transmitting circuit includes a high frequency power source or a high frequency oscillation generator and a transmitting coil; the high frequency power source or the high frequency oscillator generator and the transmitting coil are connected in series to the wireless power transmitting circuit.

Preferably, the intraocular illumination system further includes a second control circuit; the second control circuit is disposed on the circuit carrier, and the second control circuit is connected to the wireless power transmission circuit to control the orientation The radio can receive the size of the radio energy transmitted by the circuit.

Beneficial effect

Advantageous Effects of Invention The corneal contact lens of the present invention realizes illumination of a patient's fundus by embedding a light-emitting element in a contact lens body. The contact lens can be directly worn on the patient's eye. After the power is applied, the light emitted by the light-emitting element directly diffuses through the pupil to the part of the fundus that needs to be illuminated; the soft contact lens body completely encloses the light-emitting element, and its biocompatibility and ease The wearability has been verified for a long time. The contact lens of the present invention does not have any additional trauma to the patient's eyes while satisfying the needs of the patient's fundus, and is not prone to eye infection, and is safe and practical. At the same time, the light-emitting element of the invention is directly integrated on the flexible circuit board, which is equivalent to realizing the light-shielding design on the side of the light-emitting element away from the patient's eye, so that the contact lens of the invention illuminates the fundus of the patient while ensuring the illumination light is The light path does not produce the emitted light that affects the doctor's observation. The illumination source does not affect the doctor's observation, and the hand holding the illumination light during the operation of the doctor is liberated, further ensuring the safety of the eye surgery and greatly improving the doctor and the patient. Experience.

DRAWINGS

1 is a schematic structural view of a contact lens in an embodiment of the present invention;

2 is a schematic structural view of a contact lens in another embodiment of the present invention;

Fig. 3 is a schematic view showing the structure of an electric power feeding device of an intraocular illumination system in still another embodiment of the present invention.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

BEST MODE FOR CARRYING OUT THE INVENTION

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to Figure 1, an embodiment of the present invention provides a contact lens comprising: a contact lens body 1, a flexible circuit board 2, a radio energy receiving circuit 3, and a light-emitting element 4; the flexible circuit board 2, a radio energy receiving circuit 3 And a light-emitting element 4 disposed in a designated area of the contact lens body 1; the wireless power receiving circuit 3 and the light-emitting element 4 are both integrated on the flexible circuit board 2; the wireless energy receiving circuit 3 and the The light-emitting elements 4 are electrically connected to supply the light-emitting elements 4.

The contact lens of the embodiment of the present invention realizes illumination of the fundus of the patient by embedding the light-emitting element 4 in the contact lens body 1. The contact lens can be directly worn on the patient's eye. After the power is applied, the light emitted by the light-emitting element 4 is directly transmitted through the pupil to the portion of the fundus that needs to be illuminated; the soft contact lens body 1 completely encloses the light-emitting element 4, and is biocompatible. Sexuality and wearability have been verified for a long time. The contact lens of the embodiment of the present invention does not have any additional trauma to the patient's eyes while satisfying the needs of the patient's fundus, and is not easy to cause eye infection, and is safe and practical. At the same time, the light-emitting element 4 of the embodiment of the present invention is directly integrated on the flexible circuit board 2. In the embodiment, the flexible circuit board 2 is preferably a flexible circuit board 2 of non-transparent material, which is equivalent to being realized on the side of the light-emitting element 4 away from the patient's eyes. The light-shielding design makes the contact lens of the embodiment of the invention illuminate the fundus of the patient while ensuring that the illumination light does not have an emitted light that affects the doctor's observation on the light path, the illumination source does not affect the doctor's observation, and the doctor operates. The hand holding the illumination source is liberated, further ensuring the safety of eye surgery.

Further, the light-emitting element 4 comprises an OLED and/or an LED having a specified wavelength range; the specified wavelength range comprises a visible light wavelength region and/or an infrared light wavelength region.

The light-emitting wavelength of the light-emitting element 4 of the embodiment of the present invention can be selected to effectively avoid light harmful to the human eye, such as ultraviolet rays, etc., and is preferably a light-compatible wavelength suitable for use in fundus illumination. In this embodiment, an organic light-emitting semiconductor OLED and/or an LED of a visible light wavelength region and/or an infrared light wavelength region may be selected, and the biocompatibility and phototoxicity are more suitable for fundus illumination. The light-emitting element 4 of the present embodiment is preferably an organic light-emitting semiconductor OLED having a different wavelength in the visible light wavelength region, and an illumination band having a different visible region can be obtained. Other embodiments of the present invention select combined light of different wavelengths in the visible light wavelength region and the infrared light wavelength region to obtain composite light including infrared rays. In other embodiments of the present invention, the organic light emitting semiconductor OLED and/or the LED may be replaced with other electroluminescent devices that satisfy the needs, such as quantum dot electroluminescent devices.

Further, the designated area includes all or part of a boundary area of the orthographic projection area of the iris on the contact lens body 1 near the pupil on the orthographic projection area on the contact lens body 1 when the user is wearing.

In the embodiment, the iris is part of the eye structure, the iris is annular, and has a circular opening at the center, called a pupil, which is a passage for light to enter the eye. In this embodiment, the light-emitting element 4 is disposed on the orthographic projection area of the iris on the contact lens body 1 near the boundary area of the orthographic projection area of the pupil on the contact lens body 1 so as to illuminate the light through the pupil. fundus. In the embodiment, it is preferable that the light-emitting element 4 is annularly covered with the entire boundary region, and the shape of the flexible circuit board 2 is similar to the circular shape of the intersection area to match the light-emitting element 4, thereby improving light passing through the pupil to illuminate the fundus. In the region, the patient wears the contact lens in this embodiment, so that almost the entire fundus is illuminated. As shown in FIG. 2, in another embodiment of the present invention, one or more light-emitting elements 4 are disposed along the boundary portion, and the flexible circuit board 2 is matched with the light-emitting element 4 to form a working circuit of the light-emitting element 4. In the contact lens of the embodiment, the light can selectively illuminate a certain part of the fundus of the patient, but effectively improves the utilization of electric energy and at the same time improves the wearing comfort of the patient.

Further, the wireless power receiving circuit 3 includes a receiving coil; the receiving coil is connected to the light emitting element 4 to supply the light emitting element 4.

The contact lens of the embodiment of the present invention supplies power to the light-emitting element 4 by means of wireless energy transmission when the illumination is realized, and the external device converts the electric energy into other forms of energy such as magnetic field energy, laser light, microwave, mechanical wave, ultrasonic wave, etc., and then receives the light. The coil converts the received magnetic energy, laser, microwave, mechanical wave, ultrasonic wave and other forms of energy into electrical energy to realize the power supply to the light-emitting element 4. The wireless energy transmission mode eliminates the need for external leakage of the conductive contact line, completely solving the messy wiring. The fixed position of the electrical appliance, the inconvenience of the doctor's surgery, etc., bring more convenience to the ophthalmic surgery; at the same time, it avoids potential safety hazards such as hot plugging, power line short circuit, etc., improves patient safety and reduces patient use cost. . The light-emitting element 4 of the present embodiment is preferably an organic light-emitting semiconductor OLED, and the energy-receiving circuit further includes a storage capacitor, and preferably the storage capacitor and the receiving coil are connected in series, and then connected in series with the light-emitting element 4 to be in the wireless energy receiving circuit. The supply of stable electric energy to the light-emitting element 4 is maintained. In other embodiments of the present invention, when the light-emitting element 4 is a quantum dot electroluminescent device, the energy storage capacitor in the wireless energy receiving circuit can be omitted to save energy. The radio energy transmission mode adopted by the embodiment of the present invention includes one of an electromagnetic resonance mode, an electromagnetic induction mode, or a radiation mode. Electromagnetic resonance mode uses magnetic coupling resonance for energy transmission. The essence is to use the circuit to generate a frequency to make the coil resonate. The coil is coupled with the frequency to generate energy for transmission. The transmission distance is 10cm to 5m, and it is free from obstacles. The impact of the low-power electromagnetic resonance system is almost harmless to the human body, and it is safer, but the cost is high, the hardware requirements are also high, and the external interference is easy to cause detuning and difficult to debug; and when the load changes, the transmission efficiency may also be Will change, not universal. The electromagnetic induction method transmits energy through electromagnetic induction, and generates a magnetic field by applying an alternating voltage at one end of the coil, and the other coil can sense the voltage. The electromagnetic induction method can output with a larger power and reduce the use of materials, and is more environmentally friendly; The transmission distance is small and the positions of the two coils are fixed and cannot be offset. The radiation method uses microwave or laser to transmit energy. It refers to converting energy into a form that can be microwaved or laser. It is transmitted through an antenna, and the transmission distance is long, but the efficiency is low, and the direction of the antenna is relatively high, and it is encountered. Obstacle transmission will be interrupted. In this embodiment, the electromagnetic resonance mode is preferred, and the transmission of radio energy can be realized by mutual conversion of electric energy and magnetic field energy, and the radio energy can be transmitted more safely, efficiently, and stably. In the embodiment of the present invention, a storage capacitor is configured to improve the utilization of the electric energy to avoid the loss of the electric energy. The storage capacitor of the embodiment is connected with a rectifier bridge to rectify and store the induced electromotive force generated in the receiving coil. To further improve the utilization of radio energy.

Further, the contact lens of another embodiment of the present invention further includes a first control circuit 5; the first control circuit 5 is integrated on the flexible circuit board 2; the first control circuit 5 is connected to the radio The light can be received between the circuit 3 and the light-emitting element 4 to control the light-emitting intensity of the light-emitting element 4.

The contact lens body in this embodiment encloses a first control circuit 5 connected between the wireless power receiving circuit 3 and the light-emitting element 4 to control the operating current through the light-emitting element 4, thereby controlling the light-emitting intensity of the light-emitting element 4, In order to widen the range of the luminous intensity of the light-emitting element 4, the demand for ophthalmic surgery is satisfied. In this embodiment, the first control circuit 5 is preferably connected in series between the radio energy receiving circuit 3 and the light emitting element 4. The first control circuit 5 in this embodiment includes a light intensity sensor and a controller, and the light intensity sensor senses light intensity. And the brightness intensity is fed back to the controller, and the controller automatically adjusts the resistance value in the circuit according to the preset light intensity brightness threshold to implement the control of the illumination intensity of the light-emitting element 4. According to another embodiment of the present invention, by improving the circuit layout of the light-emitting element 4, it is possible to control the light-emission intensity of each of the light-emitting elements 4 of the designated area so as to satisfy the formation of a light-area having a light-dark contrast at the fundus.

In another embodiment of the present invention, there is provided an intraocular illumination system comprising the above described contact lens, further comprising a power feeding device 6; the power feeding device 6 is external to the contact lens body 1 and opposite to the The radio energy receiving circuit 3 is spaced apart by a specified distance so that the power feeding device 6 transmits radio energy to the radio energy receiving circuit 3 by means of radio energy transmission.

The power feeding device 6 in this embodiment is a device for converting electrical energy into other wirelessly propagated energy, such as converting electrical energy into other forms of energy such as laser, microwave, mechanical wave, ultrasonic wave, etc., and the specified distance in the embodiment is It refers to a transmission distance capable of ensuring that the radio energy receiving circuit 3 can efficiently receive energy to satisfy the light-emitting requirement of the light-emitting element 4 in the present embodiment.

Referring to FIG. 3, the power feeding device 6 of the present embodiment includes a wireless power transmitting circuit 60 and a circuit carrier 61; the wireless power transmitting circuit 60 is disposed on the circuit carrier 61; the wireless power transmitting circuit 60 The radio energy is transmitted to the radio energy receiving circuit 3 in a specified manner.

The power feeding device 6 of the present embodiment is a device for facilitating the wearing of the eye frame, and is located outside the sterile surgical field of the eye surgery. The circuit carrier 61 in the power feeding device 6 may be a heat-resistant cloth with a hole in the middle, and is resistant to Items such as heat fibers that are lightweight, soft, and easy to wear on the patient's eyelids allow for efficient transmission of radio energy, while at the same time increasing patient comfort, with an intermediate apertured structure that enhances the ease of use of the surgeon.

Further, the wireless power transmitting circuit 60 includes a high frequency power source or a high frequency oscillation generator and a transmitting coil; the high frequency power source or high frequency oscillation generator and the transmitting coil are connected to the wireless power transmitting circuit 60.

In the embodiment, a high-frequency power source is preferably used as a wireless power supply device, and the high-frequency power source and the transmitting coil are connected in series, so that the transmitting coil converts the radio energy into the magnetic flux intensity, and the wireless energy is transmitted to the receiving end, and the high-frequency power source is compared with The high frequency oscillator generator reduces the number of energy conversions and improves the radio energy conversion rate.

Further, the intraocular illumination system of the embodiment further includes a second control circuit 7; the second control circuit 7 is disposed on the circuit carrier, and the second control circuit 7 is connected in series to the radio energy transmission circuit. In order to control the size of transmission of radio energy to the radio energy receiving circuit 3.

In the embodiment, a second control circuit 7 is further disposed in the power feeding device 6, so that the user connects the power feeding device 6 to the circuit that does not pass the voltage intensity by controlling the button on the second control circuit 7 to control the direction. The radio energy receiving circuit 3 transmits the size of the radio energy, and the user can selectively use the first control circuit 5 disposed in the contact lens body 1 and/or use the second control circuit disposed in the power feeding device 6. 7. Adjusting the luminous intensity of the light-emitting element 4. In other embodiments of the present invention, control of the brightness of the contact lens illumination can be achieved by selectively deploying one of the first control circuit 5 or the second control circuit 7.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims

A contact lens, comprising: a contact lens body, a flexible circuit board, a radio energy receiving circuit, and a light emitting element;

The flexible circuit board, the radio energy receiving circuit and the light emitting element are disposed in the designated area of the contact lens body;

The wireless power receiving circuit and the light emitting element are both integrated on the flexible circuit board;

The wireless power receiving circuit is electrically connected to the light emitting element to supply the light emitting element.
The contact lens according to claim 1, wherein the designated area comprises: an orthographic projection area of the iris on the orthographic projection area on the contact lens body near the pupil on the contact lens body; All or part of the border area.
The contact lens according to claim 2, wherein said light-emitting element has an annular shape covering the entire boundary region, and said flexible circuit board has a circular shape to match the light-emitting element.
The contact lens according to claim 1, wherein said wireless power receiving circuit comprises a receiving coil; said receiving coil being coupled to said light emitting element to supply said light emitting element.
The contact lens according to claim 1, further comprising a first control circuit; said first control circuit being integrated on said flexible circuit board; said first control circuit being coupled to said wireless power receiving Between the circuit and the light-emitting element to control the luminous intensity of the light-emitting element.
The contact lens of claim 1, wherein the illuminating element comprises an OLED and/or an LED having a specified wavelength range; the specified wavelength range comprises a visible wavelength region and/or an infrared wavelength region.
The contact lens of claim 1 wherein said flexible circuit board is a non-transparent material.
An intraocular illumination system, comprising the contact lens of claim 1, further comprising a power feeding device; said power feeding device being external to said contact lens body to cause said power feeding device The radio energy is transmitted to the radio energy receiving circuit by means of radio energy transmission.
The intraocular illumination system according to claim 8, wherein said power feeding means comprises a wireless power transmitting circuit and a circuit carrier; said wireless power transmitting circuit being disposed on said circuit carrier; said wireless energy The transmitting circuit transmits radio energy to the wireless power receiving circuit in a specified manner.
The intraocular illumination system according to claim 9, wherein the specified mode comprises one of an electromagnetic resonance mode, an electromagnetic induction mode, or a radiation mode.
The intraocular illumination system according to claim 9, wherein said wireless power transmitting circuit comprises a high frequency power source or a high frequency oscillation generator and a transmitting coil; said high frequency power source or high frequency oscillation generator and transmitting coil Connected in series to the radio energy transmitting circuit.
The intraocular illumination system of claim 9 further comprising a second control circuit; said second control circuit being disposed on said circuit carrier, said second control circuit being coupled to said wireless energy A transmitting circuit controls the amount of radio energy transmitted to the wireless power receiving circuit.