CN216876331U

CN216876331U - Eye surface tear film lipid layer lighting device attached to chin rest mechanism of ophthalmic slit lamp

Info

Publication number: CN216876331U
Application number: CN202122765627.4U
Authority: CN
Inventors: 王奕; 汤志勇
Original assignee: Chongqing Kanghua Ruiming Technology Co ltd
Current assignee: Chongqing Kanghua Ruiming Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-07-05
Anticipated expiration: 2031-11-11

Abstract

The eye surface tear film lipid layer illuminating device attached to the ophthalmic slit lamp chin rest mechanism comprises a slit lamp microscope, wherein the slit lamp microscope chin rest mechanism is provided with the eye surface tear film lipid layer illuminating device which can illuminate the surface of the lower half part of the eye surface cornea and is used for observing the condition of the tear film lipid layer; the device for illuminating the tear film lipid layer on the ocular surface comprises a connecting part, a sliding mechanism and an illuminating body, wherein the fixed end of the sliding mechanism is connected to the connecting part, the moving end of the sliding mechanism is connected with the illuminating body, and the light source of the illuminating body is a surface light-emitting light source; the connecting part is connected to the slit lamp chin rest mechanism. The illumination device irradiates the surface of the cornea with a larger inclination angle (the inclination angle is more than or equal to 20 degrees), so that the noise interference of transparent parts such as the iris and the like behind the cornea is reduced, the noise is reduced, and the observation and imaging definition of an eye surface lipid layer are improved.

Description

Eye surface tear film lipid layer lighting device attached to chin rest mechanism of ophthalmic slit lamp

Technical Field

The patent relates to the field of medical special equipment, in particular to an eye surface tear film lipid layer illuminating device attached to a chin rest mechanism of an ophthalmic slit lamp.

Background

The eye is the most important organ in the human sense, and approximately 80% of the knowledge in the brain is acquired by the eye. The eyes are needed to read words, watch pictures, see figures, enjoy fine scenery and the like.

A slit lamp microscope (a slit lamp for short) is an important instrument which is not necessary but few in ophthalmologic examination, is also a first extensive basic instrument for ophthalmologic routine examination, and is required to be forcibly configured in industries and countries such as ophthalmologic diagnosis and treatment, ophthalmologic health care, optometry and lens matching and the like.

Throughout the world, from the smallest otolaryngological clinic to the large eye hospitals to the top-grade eye disease research institutions, ophthalmic slit-lamp microscopes are the most specialized devices for examining the eyelids, conjunctiva, sclera, cornea, anterior chamber, iris, pupil, lens and anterior 1/3 vitreous body to determine the location, nature, size and depth of lesions.

The ophthalmic slit-lamp microscope is widely used by medical institutions, ophthalmic health care institutions and spectacle chain stores, and the function expansion and improvement on the instrument play an important role in human eye health.

The structure of the slit lamp mainly comprises four parts: the device comprises a slit illuminating mechanism, a microscope optical body, a moving platform mechanism and a chin rest mechanism, wherein the slit illuminating mechanism and the microscope optical body are the most important.

The slit lamp is expanded in function and functional accessories are added, for example, a dry eye projection (lighting) device for dry eye (an ophthalmic disease) examination is added. The cornea projection (illumination) device for dry eye examination (hereinafter referred to as dry eye device) is attached to a slit lamp, and is placed between eyes and a slit lamp optical body during working, the optical axis of the dry eye device is superposed with the slit lamp imaging optical axis, and an operator illuminates the ocular surface (visible light and infrared light illumination) or projects an illumination graph (Placido ring and the like) on the ocular surface by using the device. The device is an optical projection device with a horn-shaped opening, and the angle of the light irradiating the eye surface is less than or equal to 15 degrees.

The tear film is a protective film that separates the cornea from the air on the surface of the human eye. The tear film is composed of three layers, the inner layer is mucin, the middle layer is tear fluid, and the outer layer is lipid layer. Wherein the lipid layer is generally non-uniformly, irregularly, and dynamically distributed over the surface of the tear film.

A human eye applies tears and a lipid layer to the ocular surface that secretes mucin by blinking to form a tear film. The tear film is broken in about ten seconds under normal state, and after a large number of tear films are broken, the tear film needs to be reconstructed by blinking; when the tear film is diseased, the rupture time can become rapid and the lack of tear film protection on the surface of the human eye and prolonged contact with air can cause discomfort, known as dry eye.

Dry eye is the most common and highly prevalent ocular surface disease. The disease incidence rate of the eye-protecting mask is 20-36% in China, the development trend of the eye-protecting mask shows an obvious growth trend due to the increase of eye-using frequency and the increase of eye-using time in recent years, and the eye-protecting mask has practical significance for the research of the disease on the health of human bodies.

Causes of dry eye disease are classified into: mucin problems, tear problems, lipid layer problems, wherein lipid layer problems cause dry eye, which is a lack of lipid layer or abnormal in quality, resulting in poor coverage of tear surface, premature rupture of tear film too quickly to evaporate, failure to lock water and cause dry eye.

The prior art uses slit lamps for dry eye ocular lipid layer examination, using Placido ring light or common visible light from an attached dry eye device for illumination of the ocular lipid layer. Examination of the ocular surface lipid layer using a dry eye device has the following disadvantages: a. the xerophthalmia device is an optical projection device with a horn-shaped opening, the effective irradiation part of the xerophthalmia device is arranged around the pupil of the eye, the irradiation area is small, and the actual condition of the whole ocular surface lipid layer cannot be completely reflected; b. the Placido circular ring light irradiated by the dry eye device with Placido circular rings interferes with the observation of the ocular surface lipid layer, and influences the observation effect; c. the light irradiated by the dry eye device is approximately vertical to the small-angle illumination of the ocular surface (the angle of irradiating the ocular surface is less than or equal to 15 degrees), optical signals can be interfered by reflected light noise of tissues which are not required to be observed and come from the back of the cornea such as the iris, the pupil and the like, and because the cornea and surface attachments (such as a tear film and a lipid layer on the tear film) are transparent, the interference noise is far stronger than the optical signals on the surface of the cornea (namely the signal-to-noise ratio is extremely low), the tear film lipid layer cannot be well observed at all, the interference needs to be inhibited, the signal intensity is improved, and the aim of effectively observing the tear film lipid layer is fulfilled.

SUMMERY OF THE UTILITY MODEL

This patent is to prior art's not enough, proposes the eye surface tear film lipid layer lighting device of additional on ophthalmology slit lamp chin rest mechanism, and concrete technical scheme is as follows:

the utility model provides an eye surface tear film lipid layer lighting device on addition ophthalmology slit lamp chin rest mechanism, includes slit lamp microscope, its characterized in that: an ocular surface tear film lipid layer illuminating device is arranged on a slit lamp microscope chin rest mechanism, and the illuminating device can illuminate the surface of the lower half part of an ocular surface cornea and is used for observing the condition of the tear film lipid layer;

the eye surface tear film lipid layer illuminating device comprises a connecting part, a sliding mechanism and an illuminating body, wherein the fixed end of the sliding mechanism is connected to the connecting part, the moving end of the sliding mechanism is connected with the illuminating body, and the light source of the illuminating body is a surface light source;

the connecting part is connected to the slit lamp chin rest mechanism.

Further: the light emitted by the light source of the illumination device for the tear film lipid layer on the surface of the eye is obliquely arranged relative to the direction of the axis of the eye, and the inclination angle is more than or equal to 20 degrees.

Further: the illuminating body comprises a semitransparent floodlight plate, a lipid layer illuminating device LED matrix lamp group and a lipid layer illuminating device outer cover, wherein the lipid layer illuminating device LED matrix lamp group is arranged on the inner surface of the lipid layer illuminating device outer cover, and the semitransparent floodlight plate is arranged on the lipid layer illuminating device outer cover.

Further: the sliding mechanism drives the illuminating body to move left and right and rotate left and right, and slides to a working position when in use and slides to a non-working position when not in use.

Further: the illumination light emitted by the LED matrix lamp group of the lipid layer illumination device is diffused by the semitransparent floodlight plate, converted into a soft and uniform surface light source and mapped to the lower half part of the cornea of the eye.

The beneficial effect of this patent does:

firstly, the illumination device irradiates the surface of the cornea with a larger inclination angle (the inclination angle is more than or equal to 20 degrees), so that the noise interference of transparent parts such as the iris behind the cornea is reduced, the noise is reduced, and the observation and imaging definition of the lipid layer on the surface of the eye is improved.

Secondly, the high-quality images obtained after the illumination device irradiates the ocular surface lipid layer are analyzed, the thicknesses of different parts of the ocular surface lipid layer can be accurately measured, then the average Lipid Layer Thickness (LLT) is calculated, and more accurate diagnosis conclusion can be conveniently obtained through the data.

And thirdly, the lighting device can move left and right and rotate left and right, and can move to a working position when in use and move to a non-working position when not in use, thereby not influencing the realization of other functions of the slit lamp.

Drawings

FIG. 1 is a side view of the lighting device of the present patent;

FIG. 2 is an exploded view of the lighting device of the present patent;

FIG. 3 is a top view of the lighting device of the present patent in an operative position;

FIG. 4 is a top plan view of the illumination device of the present patent in a non-operative position;

FIG. 5 is a schematic view of the working position of the present patent;

FIG. 6 is a schematic view of the patent in its inoperative position;

the reference numerals in the drawings are illustrated as an eye 1, an eye axis direction (the direction of the eye axis in front of the eye of the observer), 2, a lipid layer illumination device optical direction 3, a semi-transparent floodlight panel 4, a lipid layer illumination device LED matrix lamp group 5, a lipid layer illumination device housing 6, a lipid layer illumination device swing arm 7, a sliding mechanism slider bearing 8, a sliding mechanism bearing slider fixing plate 9, a sliding mechanism bearing slider adjusting plate 10, a sliding mechanism slide rail (connecting portion) 11, a sliding mechanism slider to non-working position moving direction 12, a lipid layer illumination device rotating direction 13, a sliding mechanism 14, a sliding mechanism bearing slider adjusting plate screw 15, a bearing pin 16, a sliding mechanism bearing slider fixing plate screw 17, a lock nut 18, a slit lamp microscope optical body 20, a slit lamp microscope moving platform mechanism 21, a slit lamp microscope illumination mechanism 22, a slit lamp microscope optical body 20, a slit lamp microscope optical mechanism, A slit-lamp microscope chin rest mechanism 23 and a slit-lamp microscope chin rest mechanism chin rest 23-1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 6:

four groups of LED matrix lamp banks 5 are arranged along the inner wall of the lipid layer illuminating device housing 6, the semitransparent floodlight plate 4 is arranged on the lipid layer illuminating device housing 6, and the other end of the lipid layer illuminating device housing 6 is connected to the lipid layer illuminating device swing arm 7. The semitransparent floodlight plate 4 has the function of diffusing light rays of the LED matrix lamp group 5, and converting the light rays into soft and uniform surface light sources, so that an irradiation surface mapped to the lower half part of the cornea of eyes is uniform and clear.

Install slide mechanism 14 on slit lamp microscope chin rest mechanism 18, slide mechanism 14 is by lipid layer lighting device swing arm 7, slide mechanism slider bearing 8, slide mechanism bearing slider fixed plate 9, slide mechanism bearing slider regulating plate 10, slide mechanism slide rail 11, slide mechanism bearing slider regulating plate screw 15, bearing pin 16, slide mechanism bearing slider fixed plate screw 17, lock nut 18 etc. constitute, can be along direction of motion 12, direction of rotation 13 moves to non-operating position, specifically do: 3 sliding mechanism sliding block bearings 8 slide linearly in the guide groove of the sliding mechanism sliding rail 11, wherein 2 sliding block bearings 8 are riveted on a bearing pin shaft 16, and the other end of the bearing pin shaft 16 is riveted on a bearing sliding block fixing plate 9; there are also 1 slider bearing 8 riveted to the slider adjustment plate 10 and adjustable to keep 3 slider bearings 8 able to grip the slide rail 11. Bearing slider fixed plate 9 is fixed with lipid layer lighting device swing arm 7 with bearing slider fixed plate screw 17 and lock nut 18, nevertheless enables lighting device swing arm 7 and can rotate for bearing slider fixed plate 9, has stop gear on the lighting device swing arm 7, can restrict swing arm 7 and rotate and do not exceed 360. The other end of the lipid layer illuminating device swing arm 7 is connected to the lipid layer illuminating device housing 6. The whole sliding mechanism 14 is connected in a connecting threaded hole of a slit lamp microscope chin rest mechanism chin rest 23-1 through screws, so that the sliding mechanism 14 is fixedly connected with the microscope chin rest mechanism chin rest 23.

The illumination device can be switched between an operating position (fig. 3) and a non-operating position (fig. 4), and in the non-operating position (fig. 4), the implementation of other functions of the slit-lamp microscope is not influenced.

The illumination light emitted by the LED matrix lamp group 5 irradiates on the semi-transparent floodlight plate 4 to form a surface light source, the surface light source irradiates on the surface of the cornea in the direction of the lower part of the ocular surface of the eye 1, the irradiated lipid layer mapping image of the ocular surface part is observed through the optical body, and the thickness of the lipid layer of the irradiated part is calculated through different colors of the image.

It is obvious to a person skilled in the art that the patent is not restricted to details of the above-described exemplary embodiments (for example, it can also be mounted on a chin rest mechanism of a corneal topography), but that the patent can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the patent being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an eye surface tear film lipid layer lighting device on addition ophthalmology slit lamp chin rest mechanism, includes slit lamp microscope, its characterized in that: an ocular surface tear film lipid layer illuminating device is arranged on a slit-lamp microscope chin rest mechanism, the ocular surface tear film lipid layer illuminating device comprises a connecting part, a sliding mechanism and an illuminating body, the fixed end of the sliding mechanism is connected to the connecting part, the moving end of the sliding mechanism is connected with the illuminating body, and the illuminating body light source is a surface light source;

the connecting part is connected to the slit lamp chin rest mechanism.

2. The ophthalmic slit lamp chin rest mechanism attached to the ophthalmic slit lamp lipid layer illumination apparatus of claim 1, wherein: the light emitted by the light source of the illumination device for the tear film lipid layer on the surface of the eye is obliquely arranged relative to the direction of the axis of the eye, and the inclination angle is more than or equal to 20 degrees.

3. The ophthalmic slit lamp chin rest mechanism attached to the eye surface tear film lipid layer illumination apparatus of claim 2, wherein: the illuminating body comprises a semitransparent floodlight plate, a lipid layer illuminating device LED matrix lamp group and a lipid layer illuminating device outer cover, wherein the lipid layer illuminating device LED matrix lamp group is arranged on the inner surface of the lipid layer illuminating device outer cover, and the semitransparent floodlight plate is arranged on the lipid layer illuminating device outer cover.

4. The ophthalmic slit lamp chin rest mechanism attached to the eye surface tear film lipid layer illumination apparatus of claim 2, wherein: the sliding mechanism drives the illuminating body to move left and right and rotate left and right, and slides to a working position when in use and slides to a non-working position when not in use.

5. The ophthalmic slit lamp chin rest mechanism attached to the eye surface tear film lipid layer illumination apparatus of claim 3, wherein: the illumination light emitted by the LED matrix lamp group of the lipid layer illumination device is diffused by the semitransparent floodlight plate, converted into a soft and uniform surface light source and mapped to the lower half part of the cornea of the eye.