RU2667875C2 - Microphotovideo recorder - Google Patents

Abstract

FIELD: medicine.SUBSTANCE: invention relates to medicine. Microphotovideo recorder of the microstructures of the cornea tissues of the eye consists of three USB microscopes with adjustable LED lighting, made with the possibility of micrometry of pathological processes in the tissues of the cornea, computer and slit lamp. In this case, three USB microscopes are connected to a computer, one of them on a binocular slit lamp microscope, with the possibility of a constant overlapping of their foci, and two other USB microscope are installed with the help of hinged joints to obtain multi-angle video recording of pathological changes in the microstructure of the corneal tissue transferred to the computer.EFFECT: application of this device will provide qualitative, color microphotography of changes in the microstructures of the corneal tissues of the eye.1 cl, 1 dwg

Description

A microphotographic-video-fixing device can be used in medicine, in particular for microphotofixation in microsurgery and allows you to document the changes in microstructures in transparent tissues, such as tissues of the cornea of the eye.

With the help of the developed microsurgical instrument (1, 2, 3, 4) and the technology of introducing microparticles into the cornea of the eye of an experimental animal, it became possible to start studying the development of metallosis (damage to the tissues of the cornea of the eye by metal ions).

A device for photofixing the microstructures of the anterior segment of the eye (5) is known, which provides stable fixation of both the photofixing device and the object under study, which allows a very clear image of fine microstructures in the cornea and iris. The experience of its use showed good technical capabilities and informativeness. However, this device does not allow video recording.

Known photo-slit lamp (6), with which you can carry out photofixation. However, the complexity of photofixation, the lack of video fixation and micrometry limits the information capabilities of the photo-slit lamp.

The closest in design to the microphotovideo-fixing device is an ophthalmic operating microscope (7), which is adopted as a prototype. It allows for microsurgical operations with simultaneous photo and video fixation. However, this technically very complex bulky structure with a vertically positioned optical system was specially created for surgery on the eyes of patients and, due to the above circumstances, will not be used to work on experimental animals.

The technical result of the invention is the provision of high-quality, color microphotofixations and both short-term and long-term video fixation of pathological changes in the microstructures of the tissues of the cornea of the eye with their linear micrometry, even with a decrease in the transparency of structures and optical interference.

The technical result is achieved due to the fact that three digital USB microscopes are connected to a computer. Moreover, one of the USB microscopes is so rigidly mounted on a binocular microscope of a slit lamp that their foci are constantly aligned, and the other two USB microscopes have a movable articulation and all this provides multi-angle information that is processed on a computer, allowing you to choose the best.

Microphotographic and video fixing device (Photo 1) is presented:

Slit lamp 1,

Three digital USB microscopes with software 2, 3, 4.

Computer 5.

Slit lamp 1 is a microscope for studying the microstructures of the cornea of the eye and consists of: coordinate table 6, binocular microscope 7, illuminator 8.

The coordinate table 6 is two metal plates pivotally connected to each other. The bottom plate 9 is fixedly fixed. The vertical axis is rigidly attached to the upper plate 10, on which the binocular microscope 7 and the illuminator 8 are movably fixed. The upper plate 10 has a lever handle 11, which allows you to dose-shift the binocular microscope 7 with the illuminator 8 back and forth, left and right, pointing them to the right eye and surgical area.

A binocular microscope 7 provides stereoscopic perception and focus accuracy on the studied area of the cornea of the eye of an experimental animal, and the magnification range allows to obtain high information content of the considered microstructures.

The focus of the illuminator 8 is combined with the focus of the binocular microscope 7, and the diaphragms located inside the illuminator 8, allow changing not only the intensity of illumination, but also the size of the light beam both vertically and horizontally. The horizontal arrangement of the optical systems of the microscope and illuminator, combined into a single focus, allowed the use of a slit lamp as a microscope.

For documenting photo and video recordings and observations in dynamics, three digital USB microscopes with software were used, each of which has the following technical characteristics:

- compact and convenient for manipulation;

- has good LED lighting;

- a wide range of optical magnifications;

- allows you to get color photo and video fixation and micrometry of pathological processes in the tissues of the cornea.

One USB microscope 3 is stationary attached to the casing of the binocular microscope 7 of the slit lamp 1 and has a focus combined with it, which contributes to high-quality photo and video fixations regardless of the displacement of the case of the slit lamp 1. Two other USB microscopes 2, 4 are mounted movably due to the hinge connections 12, allowing you to change their position in three planes.

Information from digital USB microscopes 2-4 is fed to a personal computer 5, where it is processed, accumulated and visualized. Moreover, the use of a number of computer programs allows micrometry of pathological lesions, which significantly increases the informational possibility of the research results.

The design features of the microphotographic-video-fixing device allowed to obtain the claimed technical result:

- Adjustable LED illumination of three USB microscopes gave the best contrast to the microstructures of the cornea even when they were swollen and damaged by metal ions, which made it possible to obtain the best informational content of microphotovideo recordings;

- color microphotovideo fixation made it possible not only in color to see lesions of the corneal microstructures by metal ions, but also to trace shades that characterized the intensity of the lesion, and micrometry made it possible to measure these lesions to within tenths and hundredths of a millimeter;

- a multi-angle study of the object made it possible to eliminate glare and choose the most informative aspect of microphotovideo recording;

- the design capabilities of the microphotographic-video-fixing device make it possible to conduct both short-term and long-term video surveillance of the development of the pathological process.

Numerous experimental studies have shown the multifaceted functionality of a microphotographic-video-fixing device and for the first time documented it was possible to trace in vivo the multifactorial nature of lesions of tissue microstructures of the cornea of the eye during metallosis in dynamics.

List of literary sources.

1. Device for working with microsurgical injectors. Patent for invention No. 2553389 dated 05/18/2015. Patent holder. Federal State Budgetary Educational Institution of Higher Professional Education. Petrozavodsk State University (RU). Authors: Misyun F.A. (RU), Poromova I.Yu. (RU), Gavrilyuk I.O. (RU), Meshkov V.V. (RU).

2. Microsurgical injector for introducing microparticles into a microscopic wound at a metered depth. Patent for invention No. 2553514 dated 05/20/2015. Patent holder. Federal State Budgetary Educational Institution of Higher Professional Education. Petrozavodsk State University (RU). Author: Misyun F.A. (RU).

3. A tool for gripping, holding and dosing the movement of microparticles. Patent for invention No. 2553569 dated 05/20/2015. Patent holder. Federal State Budgetary Educational Institution of Higher Professional Education. Petrozavodsk State University (RU). Author: Misyun F.A. (RU).

4. A universal microsurgical instrument for the formation of microranes in the cornea of the eye of an experimental animal. Patent for invention No. 2573556 dated 12/18/2015. Patent holder. Federal State Budgetary Educational Institution of Higher Professional Education. Petrozavodsk State University (RU) Authors: Misyun F.A. (RU), Vapirov B.B. (RU), Gavrilyuk I.O. (RU).

5. Device for fixing the microstructures of the anterior segment of the eye. Utility Model Patent No. 130822. dated August 10, 2013. Patent holder of the Federal State-Funded Educational Institution of Higher Professional Education “Petrozavodsk State University” RU. Authors: Misyun F.A. RU, Poromova I.Yu., RU, Gavrilyuk I.O., RU, Meshkov V.V. RU.

6. Muller. W. Spaltlampenfotografie der vorderen Augenabs chnitte / W. Muller, H.P. Brandt-Leipzig: Georg Thieme Verl., 1976-1. Aufl. - 127 s.

7. Operational microscope Allegra 900 Haag-Streit, Moller-Wedel. Switzerland in the Ophthalmology catalog. Stormoff Group of Companies - P. 72.

Claims (1)

A microphotographic video-fixing device for the microstructures of the cornea tissue, consisting of three USB microscopes with adjustable LED lighting, made with the possibility of micrometry of pathological processes in the tissues of the cornea, computer and slit lamp, while three USB microscopes are connected to a computer, one of them using a binocular microscope a slit lamp, with the possibility of constantly combining their foci, and two other USB microscopes are installed using articulated joints to obtain multi-angle video recording of pat logical changes corneal eye tissue microstructures transmitted to the computer.

Images