1032results about "Eye treatment" patented technology

The invention relates to the technical field of computer vision, in particular to a method for generating a blind person navigation obstacle avoidance map. The method comprises the following steps: driving a blind guiding robot to a preset inspection point, and collecting a surrounding environment image in real time; generating a three-dimensional point cloud according to the environment image, and constructing an environment map; extracting feature points based on the surrounding environment image, performing feature matching, and outputting a feature matching result; evaluating an inter-frame motion state by using a feature matching result; determining pose features of the blind guiding robot according to the inter-frame motion state; semantic segmentation is carried out by using the pose features, and an obstacle area is determined; acquiring an obstacle image of the obstacle area, and fusing the obstacle image with the surrounding environment image to generate an obstacle map; and constructing a dynamic occupancy grid based on the obstacle map. According to the invention, real-time updating and intelligent obstacle avoidance functions of the blind navigation map are realized based on the computer vision technology, and the navigation safety and the path planning accuracy are improved.

The invention provides an intelligent tactile stick interaction method and system based on multi-modal perception and edge calculation, and relates to the technical field of intelligent auxiliary equipment. The method comprises the following steps: acquiring environment and position data through a camera, a GPS and an inertial measurement unit; performing multi-modal data fusion and deep learning identification by using an edge calculation module to generate a dynamic environment map; performing real-time path planning and obstacle avoidance based on a map and a destination; analyzing a user instruction through voice recognition and interactively adjusting a path; haptic and auditory bimodal feedback is provided through a vibration module and a voice synthesis module according to a navigation result; and when an emergency obstacle is detected or a user actively alarms, a local and remote alarm mechanism is triggered. The system correspondingly comprises an intelligent tactile stick terminal and a cloud server. According to the invention, accurate and real-time perception and intelligent navigation of the environment are realized, visual and natural interaction experience is provided, an effective emergency help channel is established, and the safety, independence and convenience of travel of visually impaired people are significantly improved.

The invention discloses a real-time collaborative cross-scene visual assistance and environment perception system for visually impaired people based on head-mounted equipment. According to the invention, through fusion of a multi-mode perception technology and a neural feedback mechanism, all-around environmental cognition support is provided for visually impaired people. Key targets such as curbs, steps and traffic signals in a complex scene can be accurately recognized, and a safe navigation scheme is generated in real time in combination with a dynamic path planning and obstacle avoidance algorithm. Through personalized feedback modes such as voice and vibration, the system can adjust the interaction rhythm according to the behavior habit and cognitive state of the user, ensure efficient and natural information transmission, effectively reduce the cognitive load of the user, help the visually impaired people to travel autonomously in different environments, improve the independent living ability, and improve the user experience. Real-time response and calculation efficiency are balanced through a collaborative architecture, so that a high-performance auxiliary function is not limited by heavy hardware equipment any more. The universal design reduces the use threshold, and is helpful for more visually impaired people to enjoy the convenience brought by science and technology.

The invention provides a two-stage current intensity adjusting method for an eye therapeutic apparatus, and the method comprises the steps: extracting the impedance effect intensity of a current at a macular center through recognizing the thickness of an impedance barrier layer corresponding to the current limiting degree of a high-impedance region, and combining with the actual penetration thickness, and obtaining the current penetration depth reduction proportion of the current penetration depth at the macular center; the current intensity imbalance degree of the coarse adjustment basic current intensity in the transition subarea is evaluated, and by obtaining the current intensity increase and decrease multiple of the fine adjustment compensation current intensity, the gradient difference between high impedance limitation and low impedance permeation is integrated, and the current intensity is compensated to balance the current intensity imbalance degree of the transition subarea; and updating the current output power level of each partition according to the fine adjustment compensation current intensity, and feeding back the current output power level to a therapeutic instrument circuit in real time to obtain uniform therapeutic intensity distribution so as to be matched with the decreasing proportion of impedance of impedance gradient distribution from high to low.

A low vision aid system including a camera module to be used with a mobile device, including a macro camera configured to focus on near-field objects that is integrated within the low vision aid camera module and an illumination source structured to illuminate a field of view associated with the macro camera, a battery power supply and a wireless communication module. The wireless communication module establishes an isolated Wi-Fi connection to the mobile device. The isolated Wi-Fi connection prevents the mobile device from communicating over other Wi-Fi networks while the isolated Wi-Fi connection is maintained. The wireless communication module receives, via the isolated Wi-Fi connection, instructions from the mobile device, that are associated with operation of the macro camera, and sends via the isolated Wi-Fi connection, a video bitstream to the mobile device based on the instructions.

The invention discloses a visual prosthesis control method and system and a storage medium, and relates to the field of medical instruments, and the method comprises the steps: extracting at least one initial target image based on a target object selection result fed back by a user, carrying out the region-of-interest extraction of the initial target image, and obtaining a target object contour image, grouping each contour pixel point based on the brightness values of the contour pixel points in the target object contour map to obtain a plurality of data groups and a stimulation sequence thereof, mapping a stimulation current matrix of each data group based on the stimulation current value and the space coordinate of each contour pixel point, and obtaining a stimulation current matrix of each data group based on the stimulation sequence; and controlling the release of the stimulation current in the electrode array based on each stimulation current matrix in sequence. Redundant information is reduced based on user feedback and region-of-interest extraction, the stimulation sequence based on the average brightness value of each data set is configured, the stimulation current is controlled to be released in the electrode array based on each stimulation current matrix in sequence, and the perception quality of the brain to the target object is improved.

An eye drop propulsion device and method for propelling a drop of fluid towards an eye, including a compression chamber connected to a container configured to retain fluid, a dispenser aperture connected to the compression chamber and configured to be selectively occluded or not occluded, and a compressor configured to alter pressure in the compression chamber such that when the compressor is activated when the dispenser aperture is occluded, air is forced to flow from the compression chamber into the container, and when the compressor is deactivated, a vacuum is created in the compression chamber causing a portion of fluid in the container to flow into the compression chamber, and when the compressor is activated when the dispenser aperture is not occluded, a drop of fluid is propelled towards the eye.

The invention discloses an eye examination device with a postoperative care eyelid supporting function, and belongs to the technical field of eye examination.The eye examination device comprises an eyeshade type frame, a tightening belt, a shell, an examination base, an examination module, an eyelid dilator and the like, stable wearing can be achieved through the tightening belt, the position of the examination module is adjusted through a micro electric push rod, and the eyelid dilator is arranged on the shell; an upper eyelid supporting piece and a lower eyelid supporting piece of the eyelid dilator achieve accurate dilation by means of the SMA driving dilator, a contact air bag on an arc-shaped silica gel supporting pad can adjust contact pressure through a pneumatic adjuster, a piezoelectric ceramic vibrator can assist in tear adjustment and muscle relieving, a liquid absorber can treat redundant tears, and the device integrates a control module and various detection modules and is convenient to use. The eye protection device can monitor the eye state in real time and trigger a protection mechanism, provides safe and comfortable support and nursing for postoperative patients while completing eye examination, and is suitable for ophthalmologic postoperative examination and rehabilitation assistance.

The invention relates to the technical field of intelligent walking assisting equipment, and discloses a blind person intelligent guiding walking assisting method and system based on deep learning. The intelligent guiding power-assisted walking method for the blind is applied to guiding power-assisted electronic equipment, and specifically comprises the following steps: S101, receiving a starting signal sent by a user terminal, starting a multi-source sensor array to collect environment data in parallel, executing a Kalman-Transform space-time alignment algorithm, establishing a multi-modal data space-time unified coordinate system, and establishing a multi-modal data space-time unified coordinate system; when gait phase changes are collected and detected, a multi-source sensor array is activated and dynamically triggered for high-precision scanning, and a threat evaluation model is generated to calculate an obstacle collision probability point cloud matrix; and S102, processing the obstacle collision probability point cloud matrix through Point VoxelNet to generate a three-dimensional environment skeleton. The cross-modal attention mechanism of the millimeter wave radar and the vision improves the rain and fog weather recognition accuracy, and in addition, the dynamic threat evaluation module is combined with the double-threshold early warning strategy, so that the collision false alarm rate is effectively reduced.

Systems and relative method of monitoring the state of a subject's retinal disease employ remote based OCT imaging of a subject's retina. A method includes receiving optical coherence tomography (OCT) image data of a retina of a subject for each of a series of OCT imaging sessions of the retina. The OCT image data of the retina is processed to determine a series of measured extent values. Each of the one or more measured extent values is indicative of a respective extent of the retinal disease.

The invention discloses an ocular surface illumination treatment device and method, and belongs to the technical field of ophthalmology medical equipment and treatment. The device comprises an infrared camera module, a computer terminal analysis control module, an optical power detection module, a mechanical adjustment module, a safety switch module and an illumination module. Wherein the infrared camera module comprises an infrared CCD (Charge Coupled Device) camera and a near-infrared light source which are arranged at a preset included angle and can collect eye images and transmit the eye images to the computer terminal, and the highest recording speed of the infrared camera module is not lower than 200 frames per second; and the computer terminal analyzes the image to obtain pupil positions, diameters and distances, and adjusts relative positions of a shielding device and a lens group in the light path of the illumination module, the axis of the light path and the distance between left and right lens cones, so that the central dark area of the annular light spot is matched and overlapped with the pupil. Eye images are collected and processed firstly, then light spots and the lens cone are adjusted, finally phototherapy and real-time monitoring are carried out, light can be prevented from entering the fundus, the treatment safety is improved, and the device is suitable for ocular surface diseases such as xerophthalmia.

The invention provides a bandage mirror which comprises a lens body, a flexible part and a shielding part, one end of the flexible part is connected with the periphery of the lens body, and the other end of the flexible part is connected with the shielding part; the lens body is provided with an outer convex face and an inner concave face, and the face, away from the outer convex face, of the shielding piece is used for shielding eyelashes on the lower eyelid. The eyelashes can be prevented from stimulating the upper eyelids and the lower eyelids in the recovery period when the eyes of a patient are closed after an eye operation.

A drug applicator (202) for ultrasound-enhanced delivery of at least one drug to a target site in an intraocular space (100), the system comprising a signal generating unit (300) operatively connected to an ultrasound transducer (202), wherein the drug applicator includes at least one space (800) for holding the drug, made of a low-ultrasound-attenuation material, configured to provide low-ultrasound-loss coupling between the system and the sclera, and configured to be mechanically coupled to the system and further configured to be coupled to the ultrasound transducer with low-ultrasound-loss. The signal generating unit and / or the ultrasound transducer are configured to emit an ultrasound pattern in at least one application cycle, the application cycle comprising at least one ultrasound emission event having a duration TA and a waiting period having a duration TW.

The invention discloses a wearable intelligent obstacle avoidance system, and belongs to the technical field of blind person auxiliary travel. The invention aims to solve the problem that the existing blind person travel auxiliary equipment is inconvenient to use or high in cost. The method includes the steps that an image collection module collects blind sidewalk obstacle images; the GPS positioning module obtains position coordinates of a user; the lightweight target detection model performs obstacle recognition on the blind sidewalk obstacle image based on the position coordinates of the user to obtain obstacle information; the monocular distance measurement module obtains a distance signal between the current position of the user and the obstacle according to the obstacle information; the control module sends the current distance signal to the prompt module and sends a danger prompt signal when the distance between the current position of the user and the obstacle is smaller than a set threshold value; the prompting module sends a distance signal to a user; an alarm is sent to a user according to the danger prompt signal; all the modules are integrated on the wearable article to form the wearable device. The method is used for assisting the blind in going out.

The invention relates to the technical field of eyelid mechanical correction, and provides a precise and adjustable eyelid mechanical correction system which comprises a lower attaching part, an upper fixing part, a middle mechanical adjusting mechanism and an intelligent sensing and data interaction subsystem, and the lower attaching part, the upper fixing part and the middle mechanical adjusting mechanism are combined into a wearable intelligent correction patch; the lower fitting part is used for fitting the skin surface of an upper eyelid and providing a fitting basis for eyelid correction; the upper fixing part is used for being attached to the rear upper portion of the eyebrow or the skin of the eyebrow bone and providing stable fixing support for the whole system. The middle mechanical adjusting mechanism is connected with the lower attaching part and the upper fixing part and serves as a core component for accurately controlling the lifting force of the eyelid; and the intelligent sensing and data interaction subsystem is used for collecting key data in a correction process, realizing visual presentation of a treatment process, recording and storing the data and guiding and adjusting clinical rehabilitation. As a medical instrument for eyelid function correction and treatment, eyelid correction is achieved through precise mechanical regulation and control.

The invention relates to the technical field of medical instruments, in particular to a device for assisting upper and lower eyelids of a patient in closing, which comprises a glasses frame, glasses legs arranged on two sides of the glasses frame and a nose pad in the middle, and further comprises an eyelid fixing component mounted on the inner side of the glasses frame through a mounting frame, and a traction mechanism arranged in the mounting frame and used for fixing the eyelids. The traction mechanism is connected with the eyelid fixing assembly and is used for driving the eyelid fixing assembly to assist the closing and opening of the upper and lower eyelids of the patient, so that the problems that the existing device mostly adopts rigid fixation or continuous external force to assist the closing and opening of the upper and lower eyelids of the patient and cannot be dynamically adjusted along with the blinking action of the patient are solved; the closing and opening switching process of the eyelids of the patient is stiff, the cornea can be pressed due to too large instant tension during closing, the eyelids cannot be completely opened due to insufficient reset force during eye opening, the switching process is lack of natural buffering, and meanwhile, due to uncontrollable fixing force, the cornea cannot be completely opened. And falling-off is easily caused by sweat and expression activities.

The invention discloses an intelligent blind person walking stick based on artificial intelligence, and relates to the field of intelligent walking sticks, and the intelligent blind person walking stick comprises a sensing module used for collecting environmental physical information in the advancing direction of a user in real time, and a processing module used for receiving multi-source environmental information collected by the sensing module, establishing a dynamic three-dimensional space model of the current local environment by taking a landing point at the bottom end of the walking stick as a current origin of coordinates; when the user touches the walking stick to the ground once, a'drop point event 'is triggered once, the three-dimensional space model is updated based on new drop point data, and the space offset between the current drop point and the previous drop point is calculated, including the moving distance and the direction change; compared with a scheme only based on distance perception or fixed path navigation, the method has higher environment understanding capability, navigation adaptive capability and real-time correction capability.

Devices configured to be implanted in a lens capsule of a human eye and securely hold an intraocular lens (IOL), and operable to displace the IOL relative to an optical axis of the IOL; the devices comprising a first member configured to be fixedly positioned inside the lens capsule, a second member to which the IOL is fixedly attachable, and a bendable structure attached at a first end thereof to the first member and at a second end thereof to the second member; the bendable structure being configured to be remotely controllably bended at various bending levels to thereby vary location of a periphery of the IOL, when the IOL is attached to the second member, along the IOL optical axis.

An eye drop propulsion device and method for propelling a drop of fluid towards an eye includes a compression chamber, a container configured to communicate fluid into the compression chamber, an occludable dispenser aperture, and a compressor configured to alter pressure in the compression chamber such that when the compressor is activated and the dispenser aperture is not occluded, a drop of fluid is propelled towards the eye, and when the compressor is deactivated and the dispenser aperture is occluded, a vacuum is created in the compression chamber causing fluid to flow into the compression chamber. Alternatively, the device includes a dispenser aperture connected to the compression chamber and configured to allow at least a drop to be added to the compression chamber from the container without fluid exiting the dispenser aperture, and to allow a drop of fluid to be propelled towards the eye when the compressor is activated.

The invention relates to an intelligent nursing and monitoring device used after glaucoma filtration, and belongs to the technical field of medical instruments, the intelligent nursing and monitoring device comprises a rigid main frame, the inner side of the rigid main frame is provided with a flexible sealing gasket, the upper portion of the rigid main frame is integrated with a self-adaptive positioning system, and the left side and the right side of the rigid main frame are connected with directional physical nursing execution systems; a microenvironment humidity monitoring system is embedded in the ball head, and the rear side of the frame is connected with an intelligent central control system. The self-adaptive positioning system accurately recognizes eyeball and filtered bubble areas, the directional physical nursing execution system reproduces standardized nursing operation, the microenvironment humidity monitoring system verifies the nursing effect in real time, and the intelligent central control system overall plans all the systems to cooperate and supports remote data transmission. The device can solve the problems of inaccurate postoperative nursing, lagged effect feedback and poor patient compliance, improves the nursing quality, assists in improving the success rate of an operation, and is suitable for families and clinical nursing scenes.

Methods, systems, devices, and apparatus for dispensing a predetermined amount of fluid to a surface of an eye. A dispensing system includes one or more vial assemblies, each vial assembly including a vial housing and a cup-shaped member coupled to the vial housing to form a hermetically sealed fluid compartment within the vial housing for holding a fluid. The one or more vial assemblies also include a dispensing mechanism coupled to the cup member and configured to dispense a predetermined amount of fluid. The dispensing system also includes a reusable electrically powered dispensing actuator configured to be removably coupled to a vial assembly of the one or more vial assemblies by sliding into the cup member and activate the dispensing mechanism to draw fluid from the hermetically sealed fluid compartment and dispense fluid through the dispensing tip.

The invention relates to gene therapy of ocular conditions. Described herein are compositions and methods for delivering therapeutic products, such as therapeutic proteins (e.g., antibodies), therapeutic RNAs (e.g., shRNAs, siRNAs, and miRNAs), and therapeutic aptamers, to the retinal / vitreous humor of the eye of a human subject to treat ocular conditions, involving, for example, recombinant viral vectors, such as recombinant adeno-associated virus (rAAV) vectors.

The utility model provides a novel eye drug delivery and release system which sequentially comprises a main body base layer and a waterproof isolation layer from outside to inside, the main body base layer and the waterproof isolation layer are fixedly attached together, and at least one drug storage and release layer is attached to the waterproof isolation layer. The medicine storage and release layer is used for storing ophthalmology medicine and releasing the ophthalmology medicine into eyes when the ophthalmology medicine is in contact with the eyes, the medicine storage and release layer comprises a base layer and an upper layer which are attached together, the base layer is a methyl cellulose layer, and the upper layer is a polycaprolactone layer. According to the utility model, medicine is administrated on the bitamporal sides of two eyes, and medicine quickly passes through the lower lacrimal punctum, so that medicine loss is reduced; a patient does not need to directly face the medicine bottle, fear of the patient is reduced, and the medicine bottle is prevented from touching eyes by mistake; the disposable liquid medicine bottle is disposable, high in comfort level, convenient to operate, capable of being used in cooperation with most of liquid medicine and high in applicability. The effective duration and concentration of eyelid margin medication can be increased, and the effectiveness is higher; the eye cleaning device has various functions and can also be used for cleaning eye conjunctival sacs and eyelid margins.

The invention provides an optic nerve regulation and control system based on an ultrasonic technology, a first ultrasonic module is deployed on the outer side of a target human eyelid and is provided with an Archimedes spiral type first ultrasonic array facing the human eye, and the first ultrasonic array is configured to generate a gathered ultrasonic beam which acts on a human eye retina ganglion cell area in a targeted manner; the positioning module is deployed on the outer side of a target human eyelid and is configured to measure three-dimensional geometric data when a human eyeball horizontally faces the front and measure the depth distance of a human eye retina ganglion cell area in the human eye; the optic nerve response prediction module is pre-trained with an optic nerve response prediction model facing a target human body, and the optic nerve response prediction model is configured to adjust sound intensity output of the first ultrasonic array based on stimulation feedback prediction of human eye retina ganglion cells. According to the invention, the optic nerve regulation and control system satisfies non-intrusive, high-precision and self-adaptive requirements, and has optic nerve regulation and control and repair functions.

The utility model relates to the technical field of eye muscle training and massaging, and discloses an electronic heating eye muscle training and massaging instrument which comprises a training and massaging assembly and bandages fixed to the two sides. The training massage assembly comprises a training massage body; the front mask is arranged on the front surface of the training massage body; the eyebrow massage head is fixedly connected to the front surface of the front mask; the canthus massage head is arranged on the front surface of the front mask; the eye bag massage head is arranged on the front surface of the front mask; by arranging the liquid medicine heating assembly and the liquid medicine atomizing assembly, the liquid medicine heating assembly can store massage liquid medicine, during massage, the liquid medicine can be heated through the liquid medicine heating assembly, then the heated liquid medicine is atomized and sprayed out through the liquid medicine atomizing assembly, massage hot compress is conducted, and by means of the mode, the eyes can be heated and massaged; in addition, the liquid medicine can also be absorbed by eye muscles, and the massage effect is further improved.

The utility model relates to a drug reservoir (4) for an intraocular lens (1), having a drug, a through-hole (8), a first drug reservoir gap (23) communicating with the through-hole (8), a first connecting plate (25) defining the first drug reservoir gap (23), a first end face (31) defining the through-hole (8), and a second end face (32) arranged opposite the first end face (31) and defining the through-hole (8), the passage opening (8) has a first longitudinal end (34) in the region of the first end face (31) and a second longitudinal end (35) in the region of the second end face (32), the drug reservoir (4) having a displacement direction (15) oriented from the first longitudinal end (34) to the second longitudinal end (35), the first drug reservoir gap (23) is formed such that the through-hole (8) is accessible through the first drug reservoir gap (23) from the outside of the drug reservoir (4) in a drug reservoir radial direction (16) with respect to the displacement direction (15).

The application discloses an eye hot compress device for ophthalmic clinic and belongs to the medical field. The device comprises a headband, a hot compress device, a constant-temperature hot water device and a circulating water assembly. The hot compress device is internally provided with a hot compress soft bag, the hot compress soft bag is adjusted to contact with the eye by a pushing assembly, the pushing assembly comprises a guide assembly, an air source cylinder and a linear driving assembly, the linear driving assembly is composed of a motor, a screw rod and the like, and the accurate control of the position of the hot compress soft bag can be realized. The circulating water assembly enables the constant-temperature hot water to circulate between the water tank and the hot compress soft bag, and the water temperature is kept constant. In addition, the device is also provided with an elastic longitudinal beam, a bending sensor and a controller, the position of the hot compress soft bag can be automatically adjusted according to the eye pressure, and the same pressure is ensured to be applied to the eyes of different patients. The application solves the problems of the existing hot compress device, such as inaccurate temperature control, incapability of adapting to different eye outlines and complicated operation, improves the comfort and effect of the eye hot compress, and has important clinical application value.

The contact lens tool is a device intended to make it easier to insert and remove a contact lens from a person's eye. To accomplish this, the device includes a unique applicator head specifically designed to pick up and hold a contact lens. According to a preferred embodiment, the applicator head can be adjusted to various positions, depending on how the device is used. For inserting or removing a contact lens, the applicator head is most effective when partially open, forming a "Y" shape. This shape allows the applicator head to hold a wide range of contact lenses. Alternatively, the applicator head can be fully opened, forming a "T" shape. When not in use, the applicator head can be folded to a fully closed position, forming an "I" shape. This shape reduces space, allowing the device to be stored in a small compartment such as a wallet or purse.