12 results about "Photocoagulations" patented technology

The present invention discloses a retinal laser photocoagulation surgery quality assessment system, electronic equipment, and computer-readable storage medium, belonging to the field of laser spot detection technology. The present invention establishes an assessment system based on three dimensions: laser spot level, laser spot spacing, and whether blood vessels are damaged. It also utilizes an artificial intelligence algorithm for automatic assessment, thereby resolving the large workload, subjectivity, and instability inherent in manual assessments. The system can accurately and rapidly assess the quality of retinal laser photocoagulation surgery, reducing reliance on manual labor and the influence of subjective factors. This resolves the existing technical issues of "large workload, subjectivity, and instability inherent in manual assessments of retinal laser photocoagulation surgery quality."

The invention belongs to the technical field of experimental animal models, biomedical research and immunology, and discloses a photocoagulation thymus ischemia animal model, a method and application of the photocoagulation thymus ischemia animal model in rapid simulation of thymus degeneration and immune senescence, and the model shows at least one or more characteristics 1-7 days after induction: thymus atrophy, thymus weight or thymus index is significantly reduced; the cortical-medullary structure of thymus is disordered or disappears; the expression distribution of the Keratin 5 / Keratin 8 is abnormal; thymic cell apoptosis is increased, and lipid deposition is enhanced; the proportion of CD4 + CD8 + double positive T cells is reduced, and the proportion of DN2 / DN3 stage T cells is increased; the initial T cell output is reduced; and the immune function is reduced. The pathological mechanism is clear; the modeling period is short, and the immune senescence phenotype can be stably obtained within several days; the injury focus is controllable, and systemic stress or hormone interference is avoided; the model has high repeatability and is suitable for mechanism research and drug screening.

The utility model discloses a micropulse ciliary body photocoagulation assist device which comprises an auxiliary handle, an eyeball fixing ring is connected to the end of the auxiliary handle, fixing sawteeth used for assisting in fixing an eyeball are evenly distributed at the bottom end of the eyeball fixing ring, and the end of each fixing sawtooth is arranged to be an arc-shaped end. The outer surface of the eyeball fixing ring is fixedly connected with a probe auxiliary device used in cooperation with the micro-pulse probe, and the probe auxiliary device is arranged on the side portion of the auxiliary handle. The eyeball fixing ring is arranged at the corneal limbus of the surface of an eyeball, the fixing sawteeth make contact with the ocular surface and are slightly pressed to fix the eyeball, the micro-pulse probe penetrates through the probe auxiliary device to extend to the ocular surface, and the ciliary body photocoagulation operation is started to be carried out, and in the operation, the probe auxiliary device supports the micro-pulse probe and limits the moving route of the micro-pulse probe. Therefore, the ocular surface marking of the ciliary body photocoagulation does not need to be specially carried out, the operation time is shortened, and the probe control precision and the use safety are improved.

The application discloses a fundus laser region selective treatment system based on real-time determination of a galvanometer coordinate, relates to the field of ophthalmic laser treatment instruments, and aims at the problems that in existing fundus laser treatment, the protection of the forbidden irradiation area depends on manual or software judgment, multi-point scanning is difficult to adapt to the lesion contour, and treatment energy is difficult to be graded and matched, and proposes the following scheme: the system comprises a host computer, an FPGA controller, a galvanometer scanning unit, a 577nm laser emission unit and an eyeball movement tracking unit, the host computer generates a fundus region mapping table and corresponding graded energy parameter groups, the FPGA controller performs table lookup determination according to the current scanning point coordinates fed back by the galvanometer scanning unit, and controls the 577nm laser emission unit to perform laser on-off, pulse modulation and power adjustment, and the eyeball movement tracking unit provides offset data to the FPGA controller to correct the coordinate reference. The application is suitable for laser photocoagulation treatment of fundus diseases.

Apparatus (100, 400, 500) for medical treatment includes a contact lens (150, 302, 308, 602) having a front side (151) and a concave rear side (153), which is shaped to contact a front surface (155) of an eye (142) and comprises multiple protrusions (162, 304, 310) extending from the rear side and configured to contact and depress respective points around a sclera (168) of the eye. A laser (108) generates a beam (113) of optical radiation. A scanner (110) directs the beam through the front side of the contact lens to impinge sequentially on at least some of the protrusions so as to photocoagulate tissue in the eye in proximity to the respective points.

This application belongs to the field of image processing technology and discloses a method and device for quantifying ROP laser spots, including: outlining the boundaries of laser spots in multiple fundus laser images; binarizing each fundus laser image to obtain a mask; using the mask as a true label to obtain a trained laser spot segmentation model; obtaining the area of the laser spot enclosed by the laser spot boundary in each fundus laser image; using the area of the laser spot in each fundus laser image as a true label for training to obtain a trained area prediction model; obtaining a to-be-diagnosed image, inputting it into the laser spot segmentation model to obtain a laser spot segmentation region; inputting the laser spot segmentation region into the area prediction model to obtain a predicted laser spot area; calculating the circular area of the fundus circular region, and dividing the predicted laser spot area by the circular area to obtain a laser area index. This application can provide an objective quantification method for predicting the fundus prognosis and refractive state of children after laser photocoagulation, and improve the diagnosis and treatment efficiency of ROP children.

The invention relates to the technical field of medical equipment, in particular to a photocoagulation treatment tip which comprises a laser handle, a laser working tip is arranged on the left side of the laser handle, a laser optical fiber coupling connector is integrated in the laser working tip, and the right end of the laser optical fiber coupling connector is fixedly connected with an FC connector. The outer surface of the FC connector is connected with an FC connector in the left end of the laser handle in a clamped mode, the whole left end of the laser working tip is in a horseshoe shape, the inner wall of the left end of the laser working tip is of a sole-shaped structure, and rhombic anti-skid patterns are etched on the outer surfaces of the upper side and the lower side of the horseshoe-shaped left end of the laser working tip. The laser working tip can be quickly inserted, pulled and replaced, the laser handle can be repeatedly used, a standardized interface is matched, an Iridex semiconductor laser and other mainstream hosts are adapted, equipment does not need to be transformed, the problems that a traditional integrated type interface cannot be repeatedly used and is high in cost are solved, and the problems that a split type interface is poor in compatibility and high in energy loss are solved.

A laser device for photocoagulation surgery is disclosed, wherein the laser device includes a multi-wavelength laser source having a first direction and a second direction different from the first direction. The laser device includes a positioning light source, a first laser light source, a first lens, a second laser light source, a second lens, a third laser light source, a third lens, a fourth laser light source and a fourth lens. The positioning light source configured to project a positioning visible light along the first direction, wherein the positioning visible light has a specific wavelength being about 635 nm. The first laser light source configured to project a first laser light having a first wavelength along the second direction. The first lens disposed in a main optical path of the positioning visible light, and configured to receive the first laser light and reflect the first laser light along the first direction.

The invention provides a method for generating an eye fundus image containing laser speckles, which comprises the following steps of: determining a plurality of layering results of a retina according to a plurality of B-scan images of a target eye after a laser photocoagulation operation, determining a first target projection image and a second target projection image according to a layering projection image of each layering result, and generating an eye fundus image containing the laser speckles according to the first target projection image and the second target projection image. Combining a preset fixed value to obtain a second three-dimensional matrix; and constructing a first three-dimensional matrix according to the plurality of B-scan images, and generating a target three-dimensional matrix in combination with the second three-dimensional matrix so as to determine the fundus image containing the laser speckles. According to the mode, the kernel region and the halo region of the laser speckle can be determined based on the at least two layering results of the retina of the target eye, so that the fundus image containing the laser speckle is obtained, and the imaging display effect of the laser speckle is improved.

An intraocular cyclophotocoagulation device having a proximal, reusable portion and a distal, disposable portion. The reusable portion includes laser treatment assembly comprising a laser diode and a collimating lens positioned a distance distal to the laser diode and configured to collimate light from the laser diode into a collimated laser beam and direct the collimated laser beam towards a distal end region of the proximal housing portion; and an imaging assembly. The disposable portion includes a laser guide extending through an elongate shaft and an aspheric lens positioned within the distal housing portion to receive the collimated laser beam from the proximal reusable portion and direct the collimated laser beam toward a proximal end of a fiberoptic of the laser guide and an illumination light guide and an illumination source positioned within the distal housing portion. Related devices, systems, and methods are provided.

A photocoagulation apparatus of some embodiment examples stores a first OCT image of a retina. The photocoagulation apparatus performs moving image photography of the retina to which aiming light is being applied, and repeatedly detects an aiming light image from a moving image. The photocoagulation apparatus moves a scan target area to include an aiming light application position. After treatment light application in response to user's instruction, the photocoagulation apparatus applies OCT scanning to the scan target area at a time of reception of the instruction, and constructs a second OCT image from acquired data. The photocoagulation apparatus compares the first and second OCT images to acquire change information representing a tissue change caused by the treatment light, and displays a change image based on the change information together with a retinal image.