KR102221915B1 - External fixation lamp for fundus camera - Google Patents

Abstract

An external vision lamp for a fundus camera is provided to help fundus examination for patients with very poor vision or narrow central vision within the subject. The external looking lamp for the fundus camera includes: a housing having an opening; A first light source for long-distance inspection installed in the housing; A light source control unit that reflects light of the first light source in the housing and irradiates it to the outside through the opening; And a second light source for short-range inspection formed at one end of the flexible tube coupled to one side of the housing.

Description

External fixation lamp for fundus camera {External fixation lamp for fundus camera}

The present invention relates to an external gaze lamp, and more particularly, to an external gaze lamp for a fundus camera.

The fundus camera is a camera that photographs the condition of the fundus, and changes in the blood vessels, macula, choroid, etc. Used when testing. Since the fundus camera can accurately record the fundus and preserve it for a long period of time, it is possible to check the trend of the lesion by comparing pictures taken over a period of time.

In order to photograph a specific area of the fundus during the fundus examination, the patient must fix the face on the fundus camera and move his eyes according to the instructions of the examiner to keep looking in a specific direction. In order to induce the patient's gaze in this way, an internal fixation lamp is provided in the fundus camera. The internal gaze lamp shows the internal target in the eye of the patient to be examined, and the fundus camera photographs the fundus inside the object to be examined while the patient looks at the internal target into the object to be examined.

On the other hand, in the case of patients with very poor visual acuity or narrow central vision in the test subject, there are many cases in which the internal target by the internal gaze lamp cannot be recognized. There is a problem in that the patient cannot accurately move the gaze direction according to the instruction of the examiner, and thus it is difficult to obtain an accurate fundus image.

It is an object to be solved by the present invention to provide an external gaze lamp for a fundus camera that aids in fundus examination for a patient with very poor vision or a narrow central field of view in an object to be examined.

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

An external gaze lamp for a fundus camera according to an embodiment of the present invention for achieving the above object is an external gaze lamp that is mounted on the outside of the fundus camera to induce a gaze point within a patient's non-examination object, comprising: a housing having an opening; A first light source for long-distance inspection installed in the housing; A light source control unit that reflects the light of the first light source in the housing and irradiates it to the outside through the opening; And a second light source for short-range inspection formed at one end of the flexible tube coupled to one side of the housing.

The first light source may be made of a laser light source, and the second light source may be made of an LED light source.

The light source control unit includes a mirror reflecting light of the first light source and a spherical control ball connected to the mirror, and an inspector may control a reflection angle of light from the mirror by rotating the control ball.

At least a portion of the control ball may be exposed outside the housing, and a ball support portion may be formed on the housing to surround at least a portion of an outer surface of the control ball so that the control ball can be rotated in place.

A magnet is formed on one surface of the mirror, and the control ball made of metal may be coupled to the mirror by the magnet.

Further comprising a U-shaped rotation fixing unit coupled to the outer side of the housing so as to be rotatable 360 degrees, the rotation fixing unit may be coupled to the head fixing portion of the fundus camera.

It may further include a pattern forming unit coupled to the outside of the opening to transform the light of the first light source into a predetermined shape.

Specific details of other embodiments are included in the specific content and drawings.

As described above, according to the external gaze lamp for a fundus camera according to the present invention, even a patient who cannot recognize the internal gaze lamp due to very poor vision in the subject to be examined can easily recognize the external target formed outside the fundus camera into the non-examination subject. . Therefore, while the patient gazes in a specific direction according to the examiner's instruction, the examiner can photograph the desired fundus area.

In addition, the external gaze lamp for a fundus camera of the present invention is provided with a first light source for long-distance inspection and a second light source for short-range inspection, and thus can be conveniently selected and used according to the situation.

One side of the flexible tube, which can be freely deformable, is coupled to a housing of an external looking lamp, and a second light source for short-range inspection is coupled to the other side. Even if the housing is fixed to the fundus camera, the position of the second light source can be freely moved by the flexible tube. In particular, the examiner is located on the opposite side of the patient with the fundus camera interposed therebetween, and since the examiner can easily move the second light source by extending his hand, the position of the near-field external target can be conveniently adjusted. In addition, the second light source may be composed of LED light sources of various colors, and an external target may be formed according to the patient's situation by adjusting the color and brightness of the LED light source. For example, if the visual acuity within the non-examination target is 0.02 or less, the brightness of the LED light source is increased to form an external target, so that the patient can easily recognize it. In addition, when a red LED light source is provided as a second light source to a patient who cannot observe the internal target during the Musandong examination, since it does not stimulate the pupil, it is possible to obtain a gaze point effectively.

Since the first light source for long-distance inspection is made of a laser light source, straightness of the irradiated light is ensured, so that an external target can be accurately formed on an object located at a distance. The first light source for long-distance examination is a device for supplementing the second light source for short-range examination, and may be particularly effectively applied to a patient with age-related macular degeneration (AMD) having a visual acuity of 0.02 or less. In the case of AMD patients, it is characterized by a black center. If a near external target is provided at a close distance through the second light source, the eyes of AMD patients are gathered to the nasal side, making it difficult to target the center of the macula. When a distant external target using a first light source is provided to such AMD patients, it is possible to prevent the eye from converging to the nasal side, so that a lesion at a desired point can be photographed. Furthermore, since a light source control unit (for example, a mirror and a controller ball) is provided in the external gaze lamp, the inspector can easily control the irradiation direction of the light of the first light source using this.

1 is a diagram schematically illustrating an external gaze lamp and a fundus camera including the same according to an embodiment of the present invention.
FIG. 2 is a perspective view illustrating an external looking lamp of FIG. 1.
FIG. 3 is a cross-sectional view of the external looking lamp of FIG. 2 taken along line AA′.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

1 is a diagram schematically illustrating an external gaze lamp and a fundus camera including the same according to an embodiment of the present invention.

The fundus camera 1 includes a main body 20, a head fixing part 10 formed on a part of the main body 20 to fix the patient's head, and a photographing part 30 for photographing the patient's fundus.

The head fixing part 10 connects a pair of supports 12 fixed in a vertical direction from the main body 20, a pair of supports 12, and a chin rest 16 on which the patient's chin is placed, and a It includes a forehead support 14 that connects the pair of supports 12 and contacts the forehead of the patient.

The photographing unit 30 is located in front of the patient's eye to be examined and takes a photograph of the fundus or retina. Specifically, the photographing unit 30 and the cornea and pupil in the object to be examined are aligned, the retina is observed while maintaining the distance to the cornea and the alignment state with the pupil, and the fundus photograph is taken after adjusting the focus on the retina. For example, the photographing unit 30 may include a measurement unit that measures characteristics in an inspection object, an imaging optical system that captures an image of an anterior eye in an inspection object, a monitor on which the captured anterior eye portion image is displayed, and a photographing position and alignment state It may include a control unit and the like to adjust.

The fundus camera 1 of the present invention may be composed of a Shandong fundus camera or a Musandong fundus camera. The Shandong fundus camera refers to a device that acquires a fundus image after artificially injecting an endodontic agent because a pupil contraction occurs when a light source in the visible light band is used to acquire a fundus image. Musan-dong fundus camera refers to a device that acquires a fundus image without injection of an mydriatic agent because there is no stimulation in the pupil when an infrared light source is used to acquire a fundus image.

The external gaze lamp 100 is mounted on the outside of the fundus camera 1 to induce a gaze point within the non-examination target of the patient. Hereinafter, an external gaze lamp will be described in detail with reference to FIGS. 2 and 3. FIG. 2 is a perspective view showing the external-looking lamp of FIG. 1, and FIG. 3 is a cross-sectional view of the external-looking lamp of FIG. 2 taken along line AA′.

The external gaze lamp 100 includes a housing 110, a first light source 150 for long-distance inspection installed in the housing 110, and a light source control unit 140, 142 that controls the direction of light irradiation of the first light source 150 And, a flexible tube 132 coupled to one side of the housing 110 and a second light source 130 for short-range inspection formed at one end of the flexible tube 132. In addition, the external gaze lamp 100 may include a switch 160 for controlling turn-on/turn-off of the first light source 150, the second light source 130, or a combination thereof. Although not shown, the external gaze lamp 100 may include one or more power sources for supplying power to the first light source 150 and the second light source 130. The power unit may be implemented as a device that receives power from an external device (eg, a fundus camera), or may be implemented in an independent form within an external gaze lamp such as a battery.

The housing 110 may have a cylindrical shape in which an opening 112 is formed on the side. A U-shaped rotation fixing part 120 capable of rotating 360 degrees may be installed at an outer lower end of the housing 110. The rotation fixing part 120 may be coupled to the head fixing part 10 or the support 12 of the fundus camera 1. For example, when performing a fundus examination by placing the patient's right eye in front of the photographing unit 30, the rotation fixing unit 120 is coupled to the left support 12 and the housing 110 with the support 12 as the center. It is possible to set the position of the external gaze lamp 100 in a desired direction by rotating. If the patient's left eye is positioned in front of the imaging unit 30 to perform a fundus examination, the rotation fixing unit 120 is coupled to the right support 12 and the housing 110 is rotated around the support 12 It is possible to set the position of the external gaze lamp 100 in a desired direction. The external gaze lamp 100 of the present invention has a rotation fixing unit 120 that is detachable to an external device, so that it can be easily mounted on a fundus camera of any shape, and can be easily replaced even if the external gaze lamp 100 itself fails. I can.

The first light source 150 is installed in the housing 110 and may be configured as a laser light source. The first light source 150, which is a laser light source, can secure the straightness of light, and can clearly form an external target even on an external object disposed at a long distance behind the fundus camera 1. A fundus examination is performed while the patient gazes at these distant external targets through the unexamined eye. The first light source 150 providing a distant external target may be effectively applied to patients with habitual senile macular degeneration (AMD) whose central field of view is black.

When the first light source 150 irradiates light in the longitudinal direction of the housing 110, the light source control units 140 and 142 installed in the housing 110 reflect light from the first light source 150 to open the opening 112 Investigate to the outside through. The light source control units 140 and 142 include a mirror 142 reflecting light from the first light source 150 and a spherical control ball 140 connected to the mirror 142. That is, the light emitted from the first light source 150 is reflected by the mirror 142 and the reflected light is directed to the outside through the opening 112. At this time, the inspector may rotate the control ball 140 to control the angle of light reflection from the mirror 142 to adjust the direction of light irradiated to the outside.

The control ball 140 has a spherical shape and at least a portion is disposed to be exposed outside the housing 110. The inspector adjusts the reflection angle of the mirror 142 by manipulating the exposed portion of the control ball 140 in the vertical, left, and right directions. It is preferable that the control ball 140 rotates in place in the housing 110, and a ball support portion 114 may be formed on the housing 110 to cover at least a part of the outer surface of the control ball 140 to enable such rotation. .

The control ball 140 and the mirror 142 may be coupled or fixed in various ways. For example, when the magnet 144 is formed on one surface of the mirror 142 and the control ball 140 is made of a metal material, the control ball 140 can be coupled to the mirror 142 by the magnet 144. have. However, the present invention is not limited thereto, and the control ball 140 and the mirror 142 may be combined with an adhesive or the like.

The pattern forming part 152 coupled to the outside of the opening 112 may transform the light of the first light source 150 into a predetermined shape. For example, a pattern forming unit 152 that transforms light into various character shapes may be mounted in order to induce a pediatric patient to have intimacy with the fundus examination. In this case, the external target of the distant examination may be a character matching it. It has a shape.

The second light source 130 is formed at one end of the flexible tube 132 and may be composed of LED light sources of various colors. When the flexible tube 132 is deformed, the position of the second light source 130 can be changed, so that the position of the near-field external target can be adjusted. The second light source 130 of the present invention may include a white LED light source, a red LED light source, and the like, and the inspector may adjust the type and light brightness of the second light source 130 by manipulating the switch 160 or the control unit. . A fundus examination is performed while the patient gazes at the near-field external target of the second light source 130 through the non-examination target eye. Furthermore, the second light source 130 may include an LED light source that emits light in various character shapes. In this case, since the external target of the near-field examination has a character shape matching thereto, it is possible to increase the intimacy of the near-field fundus examination to a pediatric patient.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You will be able to understand. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects.

1: fundus camera
10: head fixing part
12: support
14: forehead support
16: chin rest
20: main body
30: filming department
100: external gaze lamp
110: housing
112: opening
114: ball support
120: rotation fixing unit
130: second light source
132: flexible tube
140: control ball
142: mirror
144: magnet
150: first light source
152: pattern forming unit
160: switch

Claims (7)

It is an external gaze lamp that is mounted on the outside of the fundus camera and guides the gaze point inside the patient's non-examination target.
A housing with an opening formed therein;
A first light source for long-distance inspection installed in the housing;
A light source control unit that reflects the light of the first light source in the housing and irradiates it to the outside through the opening; And
An external gaze lamp for a fundus camera comprising a second light source for short-range inspection formed at one end of the flexible tube coupled to one side of the housing. The method of claim 1,
The first light source is made of a laser light source, the second light source is an external looking lamp for a fundus camera, characterized in that made of an LED light source. The method of claim 1,
The light source control unit includes a mirror reflecting light of the first light source and a spherical control ball connected to the mirror,
An external gaze lamp for a fundus camera, characterized in that the inspector rotates the control ball to control a reflection angle of light from the mirror. The method of claim 3,
At least a part of the control ball is exposed outside the housing, and a ball support part is formed on the housing to surround at least a part of an outer surface of the control ball so that the control ball can rotate in place. The method of claim 3,
A magnet is formed on one surface of the mirror, and the control ball made of metal is coupled to the mirror by the magnet. The method of claim 1,
An external gaze lamp for a fundus camera, further comprising a U-shaped rotation fixing part coupled to the outside of the housing so as to be rotatable 360 degrees, wherein the rotation fixing part is coupled to a head fixing part of the fundus camera. The method of claim 1,
External gaze lamp for a fundus camera further comprising a pattern forming unit coupled to the outside of the opening to transform the light of the first light source into a predetermined shape.

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