198 results about "Slit lamp" patented technology

The invention discloses a multi-granularity cataract classification method and system based on lesion perception, belongs to the field of computer vision and medical image analysis, and is characterized in that a slit lamp image is used as input data, and a lesion perception feature extraction method is adopted, so that a model can accurately focus a lesion area, and the accuracy of cataract classification is improved; a focus region with high weight features is screened out by adopting mutual attention calculation and a maximum connected region search algorithm, and it is ensured that the classification model can focus on core features of the focus region; through a fine-grained feature optimization module, in combination with up-sampling convolution, expansion convolution and jump connection strategies, fine-grained information of a lesion area is enhanced, and the capability of distinguishing different types of cataract is improved. According to the method, high-value focus information can be extracted from complex slit lamp image data, real-time and high-precision multi-granularity cataract classification is realized, clinical diagnosis is assisted, and early cataract screening and treatment efficiency is improved.

The invention relates to a full-automatic slit lamp and an intelligent diagnosis method thereof, and aims to improve the ophthalmic examination efficiency and accuracy. The slit lamp is composed of a slit lamp device, an automatic adjusting device and a man-machine interaction device. The automatic adjusting device comprises a calculation module and an adjusting module, and the adjusting module accurately drives the slit lamp device through gear transmission and automatically adjusts operation parameters according to a preset mode. The display module of the man-machine interaction device can display the working mode, the eye image data and the interaction information, and the prompt module guides the examinee to cooperate with the examination. The camera element of the slit lamp device converts the light into image data, and the communication device transmits the data to the cloud. And during fault diagnosis, the calculation element monitors image data in real time, marks abnormities through a visual algorithm, and enters a diagnosis mode. After different modes are operated for multiple times, the calculation unit analyzes imaging result abnormity, accurately locates and displays fault components, realizes automatic fault diagnosis, and reduces maintenance cost.

The disclosure relates to an eyepiece extender for an ophthalmic microscope, such as a slit lamp microscope. The eyepiece extender comprises certain lens designs and arrangements and provides ergonomic improvement to a user of the ophthalmic microscope and accommodates different magnifications, such as high and low magnifications, while preserving image fidelity for each magnification such that the image is essentially distortion free and color corrected in each magnification instance.

The invention discloses a corneal defect animal model building method and system, and the method comprises the steps: carrying out the preliminary screening of experimental rabbits through a slit lamp, eliminating visible eye diseases or defects, carrying out the ophthalmology ultrasonic imaging examination, further recognizing and screening the hidden eye abnormality, and obtaining the experimental rabbits with normal eye conditions; obtaining thickness and hierarchical structure parameters of the rabbit cornea and the human cornea based on the difference of the rabbit cornea and the human eyeball in anatomical structures, determining the difference degree of the rabbit cornea and the human cornea through comparative analysis, and adjusting preparation parameters of a cornea defect model according to the difference degree; the corneal defect eyeball model is constructed by adopting a standardized operation process and parameter setting and controlling the size, depth and position of the corneal defect by virtue of a microscope, so that a repeatable corneal defect animal model with a uniform structure is obtained. According to the invention, the reliability of extrapolation to clinic of animal experiment results is effectively improved, and an important basis is provided for development and application of cornea defect repair materials.

The utility model discloses lighting equipment for ophthalmology examination, and relates to the technical field of lighting equipment for ophthalmology examination, the lighting equipment for ophthalmology examination comprises a supporting mechanism, the supporting mechanism comprises a U-shaped supporting plate, the inner wall of the U-shaped supporting plate is provided with a sliding groove, the outer wall of the U-shaped supporting plate is fixedly connected with a connecting plate, and the connecting plate is fixedly connected with the U-shaped supporting plate. A second U-shaped supporting plate is fixedly connected to the side, away from the U-shaped supporting plate, of the connecting plate, a dust removal mechanism is arranged on the outer wall of the U-shaped supporting plate, and the dust removal mechanism comprises an L-shaped supporting plate. The extrusion air bag can be extruded by the collision ball, and when the collision ball is extruded, internal air can be quickly sprayed to the slit lamp through the air spraying opening, so that dust falling into the slit lamp can be conveniently and timely cleaned, and the conditions that lamplight is not suitable for use or focusing due to dust accumulation and the like are reduced.

The invention relates to the technical field of deep learning and medical image recognition, and discloses a small target segmentation method for ocular surface diseases. According to the scheme provided by the invention, ResNeXt packet convolution is introduced into Backbone to enhance feature diversity, a channel attention (CA) module is added behind an output layer to optimize a dependency relationship between channels, and a bottom-up feature enhancement branch is added in a feature pyramid (FPN) structure to form a bidirectional information flow, so that semantic expression and spatial positioning are considered. In combination with an improved region generation network (RPN), an ROI Align and a multi-task loss function (classification loss Lcls, mask loss Lmask and bounding box loss Lbox), the small target segmentation performance can be remarkably improved while the calculation efficiency is kept. In a slit lamp eye surface data set experiment, the small focus Dice coefficient of the method is improved by about 12%, the omission factor is reduced by 9%, the defects of an existing method in small target segmentation are effectively overcome, and the method has good clinical application value.

Low-cost, portable in-vivo confocal ophthalmoscopes (PICOs) and associated methods are described that are capable of producing microscopic images of the anterior segment of the eye and the external eye structures enabling visualization of cellular and some sub-cellular structures. Some of the features of the described ophthalmoscopes include the use of a non-contact objective lens in conjunction with a grating-based, scan-less confocal microscopy approach, integration of the capability of imaging the external eye and anterior segment en face, integration of a display as part of the microscope, increased signal level and imaging speed, reduction of detected specular reflection, and attachment methods onto a slit lamp biomicroscope or for hand-held use.

The utility model discloses a slit lamp with a baffle, which comprises a base, a microscope assembly, a slit lamp lighting assembly and a head support, the microscope assembly, the slit lamp lighting assembly and the head support are arranged on the base, and the baffle is arranged among the microscope assembly, the slit lamp lighting assembly and the head support. A horizontal support is arranged on the front side of the lower portion of the head support, guide rods extending upwards are fixed to the two sides of the horizontal support, an adjusting screw extending upwards is rotationally installed in the middle of the horizontal support, and guide sleeves matched with the guide rods one to one are vertically arranged on the two sides of the baffle. A threaded sleeve in threaded connection with the adjusting screw rod is arranged in the middle of the baffle in the vertical direction. The height of the baffle can be conveniently adjusted according to the use conditions of different people.

The invention discloses a continuous optical zoom slit-lamp microscope system and an inspection method and application thereof, and belongs to the technical field of ophthalmology medical equipment. The system is composed of a continuous zooming module, a light source module, a data processing module, a 3D imaging module and an AI identification module. The inspection method comprises the steps of equipment initialization and head position fixation of an inspected person, AI low-magnification (5 *) preliminary screening, adaptive lens high-magnification (40 *) fine observation, dynamic light source adjustment, three-dimensional data acquisition and cloud intelligent diagnosis. The method is applied to examination and intelligent diagnosis of eye diseases such as cataract. The problems that a traditional slit-lamp microscope is discontinuous in zooming, inconvenient to operate, lack of intelligent diagnosis and free of 3D stereoscopic display are solved, and the objective of the invention is to realize simple and convenient equipment operation, continuous examination process, intelligent diagnosis and stereoscopic display, facilitate collective teaching, significantly improve the diagnosis efficiency and accuracy of eye diseases such as cataract and the like, and improve the diagnosis efficiency and accuracy of eye diseases such as cataract and the like. And DICOM standard data cloud sharing and remote consultation are supported.

The proposed technology includes ophthalmic apparatuses and systems that allow transmission of a digital slit-lamp output (both of the visible light as well as of infra-red wavelength) over the web in “real-time” alongside face-to-face audio-visual communication between the various parties. The digital output of the camera will be in a format that is compatible with direct transmission over the web. This allows a person(s) at the remote site to see the slit-lamp imagery as if the remote examiner(s) were on site in the presence of the patient and simultaneously video-chat with the operator of the microscope to provide tele-consultation. The features also facilitate collaborative care between several providers, as well as patient representative(s), by enhancing the audio-visual communication between parties with the actual slit lamp imagery of the patient in real time.

The invention discloses a femtosecond laser assisted room corner cutting device which comprises a placing table, a femtosecond laser generator is arranged on one side of the placing table, a slit lamp microscope is placed on the placing table, a bracket is arranged on the placing table, the bracket is arranged in the direction right opposite to the slit lamp microscope, and the bottom end of the placing table is connected with a bottom frame through a telescopic supporting column. Notches are formed in the sides, close to the slit-lamp microscope and the bracket, of the bottom frame, an adjuster is arranged on the placing table, the slit-lamp microscope is connected with the femtosecond laser generator through a circuit, and the adjuster is arranged on the circuit; through combination of the femtosecond laser generator and the slit lamp microscope, the chamber angle incision operation is simplified, even if a traditional incision chamber angle incision operation (also known as intranet trabecular meshwork incision operation) is changed into an incision-free laser operation, the operation infection risk is reduced, the chamber angle incision operation can be transferred to a hospital outpatient service from an original operating table, and the operation efficiency is improved. And medical resources and human resources are greatly saved.

1. The name of this design product: Handheld slit lamp. 2. Purpose of the product of this design: used to capture images of the cornea, iris, etc. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The slit lamp comprises a shell, a light source assembly, a slit assembly, an optical filter assembly, a diffractive optical element and a reflector assembly, wherein the light source assembly, the slit assembly, the optical filter assembly, the diffractive optical element and the reflector assembly are installed in the shell. Wherein the optical filter assembly comprises a plurality of optical filters and a driving unit, and the driving unit is used for driving one optical filter to move into an optical path; the reflecting mirror assembly comprises a reflecting mirror and a reflecting mirror seat, and the reflecting mirror seat is rotationally connected with the shell; according to the slit lamp, the rotatable optical filter and the diffractive optical element are arranged, so that the slit effect is slender, a better lighting effect is achieved, and the accuracy of an operation is improved.

A system for ophthalmic imaging comprising an ophthalmic device configured to obtain stereoscopic images of an eye of a patient and to transmit the images in real-time to a display device via a network for viewing by practitioners. The ophthalmic device comprises at least an optic assembly, a processing assembly, a slit assembly, such as a slit lamp, and a positioning assembly. Control devices structured to control the ophthalmic device over the network, such as the world wide web, can be disposed at a plurality of locations, and may be remote from the ophthalmic device while providing real time control of the parameters of the ophthalmic device by the practitioner(s) associated therewith.

A slit height adjustment mechanism for use in a remote digital slit lamp comprises a drive, e.g., a stepper motor, and a filter plate e.g., a rotary circular plate, movable along at least one path by

The disclosure relates to an eyepiece extender for an ophthalmic microscope, such as a slit lamp microscope. The eyepiece extender comprises certain lens designs and arrangements and provides ergonomic improvement to a user of the ophthalmic microscope and accommodates different magnifications, such as high and low magnifications, while preserving image fidelity for each magnification such that the image is essentially distortion free and color corrected in each magnification instance.

The application discloses a kind of based on lesion perception multi-granularity cataract classification method and system, belong to computer vision and medical image analysis field, take slit lamp image as input data, adopt lesion perception feature extraction method, make model can accurately focus on lesion area, improve the accuracy of cataract classification;Adopt mutual attention calculation and maximum connected region search algorithm, filter out the lesion area of high weight feature, ensure that classification model can focus on the core features of lesion area;Through fine-grained feature optimization module, combined with up-sampling convolution, dilated convolution and jump connection strategy, enhance the fine-grained information of lesion area, improve the distinguishing ability of different types of cataract.The application can extract high-value lesion information from complex slit lamp image data, realize real-time, high-precision multi-granularity cataract classification, assist clinical diagnosis, improve the screening and treatment efficiency of early cataract.

The invention provides an ophthalmic examination auxiliary device, and relates to the technical field of ophthalmic examination, the ophthalmic examination auxiliary device comprises a base, a mounting seat fixedly connected with one side of the base, a support frame arranged on the working surface of the top end of the mounting seat, and an eyelid turning mechanism connected with the support frame through a moving mechanism; a lower jaw supporting plate is arranged on the mounting seat, and the lower jaw supporting plate is positioned on the opposite side of the supporting frame; the support frame is clamped with the forehead support plate; the eyelid turning mechanism comprises oppositely-arranged limiting frames, an adjusting piece penetrating through the limiting frames and an eyelid opener connected with the telescopic end of the adjusting piece. The limiting frame has an inclined radian matched with an eyelid; through the arrangement of the eyelid turning mechanism, the limiting frame and the adjusting piece which are matched with the radian of the eyelid are adopted, multi-point accurate force application can be carried out according to the wrinkle sagging conditions of different positions of the eyes of the old people, so that the eyelid is stably and comprehensively turned over, and a clear and unshielded observation view is provided for slit lamp inspection.

The invention discloses an optical system for high-speed reduction of a dynamic deformation process of a cornea, which realizes high-precision analysis of physical characteristics of the cornea through a high-speed imaging technology, performs error compensation on the physical characteristics and realizes high-precision calculation of intraocular pressure. According to the technical scheme, the optical system comprises a slit lamp light source used for forming a cornea optical slice and ensuring the definition and the contrast ratio of a cornea slice image; the Samm lens is used for shooting a cornea optical section, inclined imaging light path design is adopted, and the depth of field meets the requirement that the cornea section keeps clear imaging in the dynamic process; and the high-speed camera is positioned behind the Chemma lens and is used for receiving the cornea optical slice image imaged by the Chemma lens so as to record the dynamic deformation process of the cornea.

A slit lamp microscope of an embodiment includes an image acquiring unit, a memory, and a misalignment information acquiring processor. The image acquiring unit is configured to acquire an image by applying a scan with slit light to an anterior segment of a subject's eye. The memory stores a first image of the anterior segment and a second image that is acquired by follow-up photography performed by the image acquiring unit with reference to the first image. The misalignment information acquiring processor is configured to acquire misalignment information between the first image and the second image by analyzing the first image and the second image after the follow-up photography.

The invention discloses a slit lamp image-based open-angle glaucoma deep learning identification method and system, and relates to the technical field of artificial intelligence and medical diagnosis crossing. The method comprises the steps of preprocessing a slit lamp image and basic clinical data of a target object, processing a standardized image by adopting a pre-trained deep learning model, and performing feature fusion on image depth features and standardized data by adopting a multi-modal feature fusion network. According to the method, automatic classification of two main glaucoma types is achieved, and the problems that in the prior art, distinguishing angle-separating glaucoma from angle-closing glaucoma mainly depends on doctor experience, subjectivity is high, efficiency is not high, traditional chamber angle microscopy examination is high in contact performance, and an existing AI method usually depends on OCT and other special equipment are solved. And objective and efficient auxiliary decision making is provided for clinical diagnosis.

The invention discloses an ophthalmology department preoperative auxiliary examination device which comprises a control table and a slit lamp, a bearing mechanism is connected to the control table, a protection mechanism comprises a mounting strip and a rotating assembly, a winding roller and a non-woven fabric roll are mounted on the mounting strip through the rotating assembly, a guide mechanism is connected to a bearing frame, and the guide mechanism is connected to a guide rod. The guide block is connected with a guide assembly used for assisting the color disc. According to the ophthalmology preoperative auxiliary examination device, the bearing frame is pulled downwards, the ophthalmology preoperative auxiliary examination device is suitable for different crowds, the bearing frame is held by a hand, the input feeling of a patient can be improved, the detection effect is guaranteed, the forehead and the jaw are attached to a non-woven fabric roll on a rubber roller for detection, after detection is completed, used non-woven fabric is automatically rolled, and the detection efficiency is improved. When the non-woven fabric section is used by the next person, the non-woven fabric section is not used, so that disease infection is avoided, the patient can see the through groove and the correction sight of the color disc, the distinguishing blocks in different color areas are different, and the concentration degree can be trained.

1. The name of this design product: Slit lamp disinfection spray device. 2. Purpose of the product with this design: The product with this design is used for a slit lamp disinfection spray device, which is used to disinfect ophthalmic slit lamps. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention discloses a modular integrated rapid ophthalmology screening vehicle and an examination method thereof, and relates to the technical field of ophthalmology examination. The inspection mechanism is mounted on the rear side of the bottom inner wall of the screening vehicle body; the two shading mechanisms are mounted between the top inner wall and the bottom inner wall of the screening vehicle body; through cooperative work of the vision detection module, the fundus imaging module, the intraocular pressure detection module, the slit lamp module and the AI auxiliary diagnosis module, and efficient interconnection between equipment in each module and the host server through USB-C and HDMI dual interfaces with unified specifications, the functional modules can be flexibly increased or decreased according to requirements of different screening scenes; the problems that a traditional whole machine integrated device is complex in structure and large in deployment difficulty are solved, multi-dimensional detection such as refraction detection, fundus imaging and intraocular pressure measurement can be completed through professional devices of all the modules, the screening efficiency and diagnosis accuracy are greatly improved, and the coverage range of ophthalmology screening service is effectively expanded.

The present invention relates to the field of artificial intelligence technology, and in particular to a Goldmann intraocular pressure examination method and device based on artificial intelligence. The method comprises: in the process of observing an eye under examination with a low-power eyepiece of a slit lamp microscope, obtaining a fluorescent image of two fluorescent semi-rings in a low-power eyepiece collected in real time by a camera; by rotating a measuring drum wheel of a Goldmann tonometer to increase the pressure applied to the eye under examination, adjusting the fluorescent semi-ring features of the two fluorescent semi-rings, and identifying the fluorescent semi-ring features in the fluorescent image in real time based on a pre-trained deep learning model; when it is identified that the fluorescent semi-ring features meet feature requirements, reading the intraocular pressure value displayed by an electronic sensor knob; recording the intraocular pressure value corresponding to the fluorescent image and the knob value, and displaying it through a display screen; the present invention improves the accuracy and efficiency of intraocular pressure examination through a pre-trained deep learning model, and realizes real-time fluorescent semi-ring display and recording.

An electric retractable mechanism and an electric adjustment mechanism for a dry eye examination device, comprising a slit lamp optical body and a slit lamp curved arm, and also comprising an electric retractable mechanism, an electric adjustment mechanism and a dry eye examination device; the fixed portion of the electric retractable mechanism is mounted on the slit lamp body; the output portion of a first drive device drives the rotating portion of the electric retractable mechanism to rotate; the fixed portion of the electric adjustment mechanism is mounted on the rotating portion of the electric retractable mechanism, and the dry eye examination device is connected to the sliding portion of the electric adjustment mechanism; the output portion of a second drive device drives the sliding portion of the electric adjustment mechanism to move along the axial direction. The second drive device and the adjustment mechanism are provided, and under computer control, according to different dry eye examination items (tear film rupture examination, meibomian gland examination, lipid layer examination, tear meniscus height examination, etc.), the dry eye examination device automatically moves to respective working positions to ensure the accuracy of the examination results.

An additional polaroid mechanism of a slit lamp microscope comprises a polarization analyzing part and a polarizing part, the polarizing part is detachably installed on a reflecting mirror surface or a prism projected by a slit lamp light source, and the polarization analyzing part is detachably installed on a lens at the objective lens end of a slit lamp; the polarization analyzing part and the polarizing part are respectively composed of a polaroid and a fixing part, the polaroid and the fixing part are detachably connected, and the polarization direction of the polaroid of the polarization analyzing part and the polarization direction of the polaroid of the polarizing part are orthogonally intersected. Through the structure, the slit lamp microscope can eliminate redundant reflected light, so that lesions of parts such as eyelids and eye rims can be clearly observed, and the slit lamp microscope can be adapted to slit lamps of different manufacturers.

A cataract classification method based on color equivariant and frequency domain attention belongs to the technical field of computer vision and medical artificial intelligence, uses eye images shot by a slit lamp as an input data source, and constructs a CFC-Mama classification network integrated with a color equivariant fusion module and a frequency domain channel attention module to classify cataracts. The model can effectively extract color robust features with unchanged equipment, and the high-frequency detail perception capability of the cataract lesion boundary is enhanced; a color isotropic convolution and cross attention fusion mechanism is adopted to solve the color shift problem caused by different imaging devices, and the cross-device robustness of feature extraction is ensured; through a frequency domain channel attention module, in combination with Fourier transform, high-pass filtering and a double-path channel attention strategy, high-frequency features of lesion boundaries are highlighted, and the fine-grained feature expression ability is improved. The invention further provides a cataract classification system based on color equivariant and frequency domain attention. According to the invention, high-precision classification of multi-granularity cataract is realized.

The utility model provides a prevent cross infection formula slit lamp bracket, including base, the base top surface one side is provided with slit lamp, the top surface other side is equipped with peripheral support, the inside bottom of peripheral support is equipped with lower column, the top of lower column is equipped with arc shaped supporting plate, the top surface of arc shaped supporting plate is overlapped with isolation paper piece, and the isolation paper piece that overlaps is fixed on arc shaped supporting plate through locating screw rod, peripheral support top surface is provided with paper drawing assembly, and paper drawing assembly inside accomodates paper tube, and the outside of paper tube is wound with isolation paper roll, and the top outside wall of peripheral support is fixed with forehead pad, and the end of isolation paper roll is outside and reaches forehead pad, the inboard wall rotationally connects of peripheral support is with forehead stop component, and forehead stop component is used to overturn positioning paper drawing assembly. The utility model discloses a disposable isolation paper is used to the forehead and chin of bracket is isolated and protected, and effectively prevents contact infection, and is convenient to replace.