CN218943312U

CN218943312U - Portable children's ophthalmic inspection appearance

Info

Publication number: CN218943312U
Application number: CN202122398887.2U
Authority: CN
Inventors: 赵云娥
Original assignee: Eye Hospital of Wenzhou Medical University
Current assignee: Eye Hospital of Wenzhou Medical University
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2023-05-02
Anticipated expiration: 2031-09-30

Abstract

The utility model discloses a portable ophthalmic examination instrument for children, which comprises a shell, an illumination light path, an imaging light path, a power supply module, a system control module, an image storage and transmission module and an operation module, wherein the illumination light path, the imaging light path, the power supply module, the system control module and the image storage and transmission module are arranged in the shell, and the operation module is arranged on the surface of the shell. According to the technical scheme, the consistency of the observation image and the acquisition image is realized by constructing the illumination light path and the imaging light path which are partially overlapped, so that a worker can accurately judge the anterior ocular segment image and the red light reflection image, meanwhile, the space is saved, the advantages of being small and exquisite, simple to operate, low in manufacturing cost and the like are achieved, and the working requirements of screening congenital cataract on a large scale can be met.

Description

Portable children's ophthalmic inspection appearance

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a portable ophthalmic examination instrument for children.

Background

Children are civilized life inheritance, while vision is an important way for children to learn the world and know the world. Vision impairment and blindness in children are important public health problems worldwide, and are a major problem in relation to the future of countries and nations. According to the world health organization (World Health Organization, WHO) estimates, there were 140 thousands of blind children worldwide in 2010, and children below 1900 ten thousand 14 years had vision impairment. In the WHO's proposed goal of "eliminating treatable blindness" in 2020, controlling child blindness is considered a highly prioritized matter! The occurrence of eye diseases in the congenital or acquired state is not only the self-unfortunately of children, but also brings great emotional and economic burden to families and society. It is counted that about half of children's blindness is treatable and that many diseases associated with children's blindness are also responsible for death of children. Thus, early discovery and administration of appropriate intervention therapy not only prevents blindness in children, but also saves young life.

In the report of 'the elimination of treatable blindness' by WHO, cataract is the primary blindness causing eye disease for children in China and is also the primary cause of treatable blindness for children. The incidence rate of congenital cataract in China is about 4 per mill, and the incidence rate in infants is about 0.2 per mill to 0.5 per mill, which accounts for about 30 percent of blindness eye diseases of newborns. Studies have shown that the critical phase of human vision development is within 7 years of birth, and that form deprivation during this phase cannot be treated in a timely manner, resulting in permanent vision impairment. For the treatment of cataract in children, the best operation time of monocular cataract is within 4 to 6 weeks after birth, and the best treatment time of binocular cataract is within 8 weeks after birth. Early discovery and early treatment are key to determining visual recovery and quality of life of children after cataract surgery.

In 2018, "expert consensus on congenital cataract screening of neonates" published by the national committee for eye health care professionals, the national women and child health care society, the screening of eye diseases of children, has suggested red reflex as the primary means of congenital cataract screening of neonates. Clinically, the red light reflection is carried by an ophthalmologist to irradiate the pupillary region of the infant at an examination distance of about 20cm by direct ophthalmoscopy, and whether the blindness-causing eye disease mainly comprising cataract exists is discriminated by observing the reflected light of the pupillary region. The reality is that the basic-level children eye health care doctors lack clinical experience and technical support related to ophthalmology, so that the children eye health screening work in most areas of China cannot be well implemented.

The data show that in the prior art, the accuracy of the congenital cataract diagnosis of a congenital cataract diagnosis platform CC-Crusier based on deep learning, which is developed by the ophthalmic center of Zhongshan university, is comparable to that of an ophthalmologist. However, this platform is expensive, bulky and not suitable for large-scale screening. The two ophthalmic testers have poor use flexibility, because the two ophthalmic testers are desktop computers, under the condition of good adjustment, the adjusted testers are a whole machine and are only used for a user to operate, and an ophthalmic doctor needs multiple steps of operation in the process of diagnosing the eyeground or anterior ocular segment of a patient in operation, the instruments are used alternately, and long-time testing of the instruments can cause more serious visual fatigue on the eyes of the patient, so that the accurate test result is not beneficial to diagnosis.

Chinese patent document CN103110401a discloses an "ophthalmic multifunctional inspection tester". The device comprises a machine base, a machine head and a machine body, wherein the machine base, the machine head and the machine body are combined into an L-shaped integrated structure, a battery is arranged in the machine base, a first circuit control circuit port is arranged at the upper end of the machine base, a second circuit control circuit port is arranged at the left end of the machine head, an infrared-receiving digital camera is arranged in the machine head, a control circuit board is arranged in the machine body, and a power switch, a shutter button, an infrared light brightness adjusting button and a focusing button are arranged at the upper part of the machine body; the control circuit board is respectively and electrically connected with the battery, the power switch, the shutter button, the infrared light brightness adjusting button and the focusing button, and the shutter button is connected with the digital camera. According to the technical scheme, the external slit lamp is adopted for illumination compensation, the structure is tedious and not portable, and meanwhile, the path difference between illumination and imaging leads to the difference between an observed image and an acquired image.

Disclosure of Invention

The portable ophthalmic inspection instrument for children mainly solves the technical problems that the original technical scheme is complicated and not portable, and meanwhile, the path difference between illumination and imaging causes the difference between an observed image and an acquired image, and the portable ophthalmic inspection instrument for children is provided, and the consistency of the observed image and the acquired image is realized by constructing the illumination light path and the imaging light path which are partially overlapped, so that a worker can accurately judge the anterior segment image and the red light reflection image, meanwhile, the space is saved, and the portable ophthalmic inspection instrument for children has the advantages of being small and exquisite, simple to operate, low in manufacturing cost and the like, and can meet the working requirements of screening congenital cataract on a large scale.

The technical problems of the utility model are mainly solved by the following technical proposal: the utility model comprises a shell, an illumination light path, an imaging light path, a power supply module, a system control module, an image storage and transmission module and an operation module, wherein the illumination light path, the imaging light path, the power supply module, the system control module and the image storage and transmission module are arranged in the shell, and the operation module is arranged on the surface of the shell. The illumination light path is used for carrying out illumination compensation and helping capture anterior ocular segment images and red light reflection images, the imaging light path is used for collecting anterior ocular segment images and red light reflection images, the power supply module is used for realizing power supply, the system control module is used for realizing interaction between the buttons and the control component, the image storage and transmission module is used for realizing storage and transmission of collected images, and the operation module is used for realizing adjustment, shooting and processing operation in the image collection process.

Preferably, the overlapping part of the illumination light path and the imaging light path is an overlapping light path, and the overlapping light path comprises a retina objective lens, a focusing lens and a hollow reflecting mirror which are sequentially arranged from the outside to the inside of the inspection instrument. The coincidence light path ensures the consistency of the observed image and the acquired image, and meanwhile, the light path device is saved.

Preferably, the illumination light path comprises a superposition light path, and an aperture diaphragm disc and an LED light source which are sequentially arranged from near to far below the left side of the superposition light path, the focusing lens is connected with the system control module, and the aperture diaphragm disc is connected with the system control module. The imaging light path is coaxial with the illumination light path and is divided by a hollow reflector. The corresponding aperture is selected through the aperture diaphragm adjusting button, the image definition is adjusted through the focusing button, and the shooting button is pressed when the image is the clearest, so that the image is obtained.

Preferably, the imaging light path comprises a superposition light path, and an imaging objective lens and an imaging CCD which are sequentially arranged from near to far at the left side of the superposition light path, and the imaging CCD is connected with the display screen. The imaging light path is coaxial with the illumination light path and is divided by a hollow reflector.

Preferably, the aperture diaphragm disc is connected with the system control module through an adjusting hole, and a large aperture and a small aperture are arranged on the aperture diaphragm disc. The aperture diaphragm disk is provided with 2 aperture diaphragms, a large aperture is used for integral illumination of the anterior ocular segment, and a small aperture is used for illuminating the pupillary region when photographing fundus red light reflection.

Preferably, the operation module comprises a display interface operation button, a focusing button, an aperture diaphragm adjusting button and a shooting button, wherein the display interface operation button is connected with the display through the system control module, the focusing button is connected with the focusing mirror through the system control module, the aperture diaphragm adjusting button is connected with an adjusting hole on the aperture diaphragm disc through the system control module, and the shooting button is connected with the imaging CCD through the system control module.

Preferably, the power module comprises a charging module arranged at the bottom of the inspection tester, a battery arranged at a handle above the charging module and a battery charging interface arranged on the side surface of the charging module, and the charging module is respectively connected with the battery, the battery charging interface and the system control module. The lithium battery capacity of the power supply module is required to be more than 1000mA, and the power supply module is arranged in the handle, can be connected with a computer or a 220V-5V power supply adapter by a USB2.0 interface data wire for charging, and supplies power for the light source and the imaging module.

Preferably, the image storage and transmission module comprises a storage unit, a transmission unit and an SD card slot, and is connected with the display screen. The transmission module comprises a wireless local area network Wi-Fi module and a Bluetooth module, and a user can be connected to a computer or a mobile phone through the wireless local area network Wi-Fi or Bluetooth.

The beneficial effects of the utility model are as follows: through constructing the illumination light path and the imaging light path which are partially overlapped, the consistency of the observation image and the acquisition image is realized, so that a worker can accurately judge the anterior ocular segment image and the red light reflection image, meanwhile, the space is saved, the advantages of small size, simplicity in operation, low manufacturing cost and the like are achieved, and the working requirements of large-scale screening of congenital cataract can be met.

Drawings

Fig. 1 is a schematic diagram of a frontal structure of the present utility model.

Fig. 2 is a schematic side view of the present utility model.

Fig. 3 is a schematic diagram of an optical path of the present utility model.

Fig. 4 is a schematic view of an aperture stop disc structure according to the present utility model.

In the figure, a shell, a display screen, a battery 3, a display interface operation button 4, a focusing button 5, an aperture diaphragm adjusting button 6, a shooting button 7, an SD card slot 8, a battery charging interface 9, a retina object lens 10, a focusing mirror 11, a hollow reflector 12, an aperture diaphragm disk 13, a large aperture 13.1, a small aperture 13.2, a regulating aperture 13.3, an LED light source 14, an imaging object lens 15, an imaging CCD16, a charging module 17, a system control module 18, an image storage and transmission module 19 and an operation module 20 are arranged.

Detailed Description

The technical scheme of the utility model is further specifically described below through examples and with reference to the accompanying drawings.

Examples: as shown in fig. 1 and 2, the portable ophthalmic examination apparatus for children of this embodiment includes a housing 1, an illumination light path, an imaging light path, a power module, a system control module 18, an image storage and transmission module 19, and an operation module 20 disposed on a surface of the housing 1. The illumination light path is used for illumination compensation and helping capture anterior ocular segment images and red light reflection images, the imaging light path is used for collecting anterior ocular segment images and red light reflection images, the power supply module is used for realizing power supply, the system control module 18 is used for realizing interaction between buttons and control components, the image storage and transmission module 19 is used for realizing storage and transmission of collected images, and the operation module 20 is used for realizing adjustment, shooting and processing operations in the image collection process.

As shown in fig. 3, the illumination light path includes a retinal objective lens 10, a focusing lens 11, a hollow mirror 12, an aperture diaphragm disk 13, and an LED light source 14, which are sequentially arranged, the focusing lens 11 being connected to a system control module 18, and the aperture diaphragm disk 13 being connected to the system control module 18. The imaging light path is coaxial with the illumination light path and is divided by a hollow reflector. The corresponding aperture is selected through the aperture diaphragm adjusting button, the image definition is adjusted through the focusing button, and the shooting button is pressed when the image is the clearest, so that the image is obtained.

As shown in fig. 4, the aperture diaphragm disk 13 is connected to the system control module 18 via the adjustment aperture 13.3, and a large aperture 13.1 and a small aperture 13.2 are provided on the aperture diaphragm disk 13. The aperture diaphragm disk is provided with 2 aperture diaphragms, a large aperture is used for integral illumination of the anterior ocular segment, and a small aperture is used for illuminating the pupillary region when photographing fundus red light reflection.

The imaging light path includes a retina objective lens 10, a focusing lens 11, a hollow mirror 12, an imaging objective lens 15, and an imaging CCD16, which are sequentially arranged, the imaging CCD16 being connected to the display screen 2. The imaging light path is coaxial with the illumination light path and is divided by a hollow reflector. The corresponding aperture is selected through the aperture diaphragm adjusting button, the image definition is adjusted through the focusing button, and the shooting button is pressed when the image is the clearest, so that the image is obtained.

The power module comprises a charging module 17 arranged at the bottom of the inspection tester, a battery 3 arranged at a handle above the charging module 17 and a battery charging interface 9 arranged on the side surface of the charging module 17, wherein the charging module 17 is respectively connected with the battery 3, the battery charging interface 9 and a system control module 18. The lithium battery capacity of the power supply module is required to be more than 1000mA, and the power supply module is arranged in the handle, can be connected with a computer or a 220V-5V power supply adapter by a USB2.0 interface data wire for charging, and supplies power for the light source and the imaging module.

The image storage and transmission module 19 comprises a storage unit, a transmission unit and an SD card slot 8, and the image storage and transmission module 19 is connected with the display screen 2. The image is automatically stored in the SD card, the transmission module comprises a wireless local area network Wi-Fi module and a Bluetooth module, and a user can be connected to a computer or a mobile phone through the wireless local area network Wi-Fi or Bluetooth.

The operation module 20 comprises a display interface operation button 4, a focusing button 5, an aperture diaphragm adjusting button 6 and a shooting button 7, wherein the display interface operation button 4 is connected with the display 2 through a system control module 18, the focusing button 5 is connected with the focusing mirror 11 through the system control module 18, the aperture diaphragm adjusting button 6 is connected with an adjusting hole 13.3 on the aperture diaphragm disk 13 through the system control module 18, and the shooting button 7 is connected with the imaging CCD16 through the system control module 18.

Before shooting, personal information of a user is input, including information such as age, gender, contact person name, contact information, contact address and the like, after the personal information is stored, eyes are selected to be right/left, and finally shooting is started by clicking. The operation is completed through the LED screen display interface operation buttons. The corresponding aperture is selected through the aperture diaphragm adjusting button, the image definition is adjusted through the focusing button, the shooting button is pressed when the image is the clearest, the image is obtained, and the image is automatically stored in the SD card. The user can select the image to be transmitted, the image can be transmitted to a computer or a mobile phone through WiFi or Bluetooth, and the data batch transmission on the SD card can be read through a card reader.

Taking congenital cataract cases as an example, shadows with different shapes are shown in fundus red reflex images, but depending on the type of cataract, any part of the lens can exist in the shadow turbid region, such as anterior cortex, nucleus, posterior cortex, posterior capsule and the like. In addition, retinopathy and keratopathy can also exist with similar shadows. Thus, an anterior ocular segment image is taken to further clarify the specific location of the lesion. Therefore, the project is to prepare a new technical standard for screening the eye diseases of children, the fundus red light reflection is taken as a primary screen, and the photographing of the anterior segment of the eye is used for secondary confirmation for the child suffering from the lesion.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although the terms illumination path, imaging path, etc. are used more herein, the possibility of using other terms is not precluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The portable ophthalmic examination instrument for children is characterized by comprising a shell (1), an illumination light path, an imaging light path, a power supply module, a system control module (18) and an image storage and transmission module (19) which are arranged in the shell (1), and further comprises an operation module (20) arranged on the surface of the shell (1).

2. The portable ophthalmic examination apparatus according to claim 1, wherein the overlapping portion of the illumination light path and the imaging light path is an overlapping light path including a retina objective lens (10), a focusing mirror (11) and a hollow mirror (12) which are sequentially arranged from the outside to the inside of the examination apparatus.

3. A portable pediatric ophthalmic examination apparatus according to claim 2, wherein the illumination light path comprises a coincident light path and an aperture stop disc (13) and an LED light source (14) arranged in this order from near to far at the lower left of the coincident light path, the focusing mirror (11) is connected to a system control module (18), and the aperture stop disc (13) is connected to the system control module (18).

4. A portable pediatric ophthalmic examination apparatus according to claim 2, wherein the imaging light path comprises a coinciding light path and an imaging objective (15) and an imaging CCD (16) arranged in sequence from near to far to the left of the coinciding light path, the imaging CCD (16) being connected to the display screen (2).

5. A portable child ophthalmic examination apparatus according to claim 3, wherein the aperture stop disc (13) is connected to the system control module (18) via an adjustment aperture (13.3), and wherein the aperture stop disc (13) is provided with a large aperture (13.1) and a small aperture (13.2).

6. The portable child ophthalmic inspection apparatus according to claim 5, wherein the operation module (20) comprises a display interface operation button (4), a focusing button (5), an aperture diaphragm adjustment button (6) and a shooting button (7), the display interface operation button (4) is connected with the display screen (2) through a system control module (18), the focusing button (5) is connected with the focusing mirror (11) through the system control module (18), the aperture diaphragm adjustment button (6) is connected with an adjustment hole (13.3) on the aperture diaphragm disc (13) through the system control module (18), and the shooting button (7) is connected with the imaging CCD (16) through the system control module (18).

7. The portable ophthalmic examination apparatus according to claim 1, wherein the power supply module comprises a charging module (17) arranged at the bottom of the examination apparatus, a battery (3) arranged at a handle above the charging module (17), and a battery charging interface (9) arranged at the side of the charging module (17), and the charging module (17) is respectively connected with the battery (3), the battery charging interface (9) and the system control module (18).

8. A portable pediatric ophthalmic examination apparatus according to claim 1, 6 or 7, wherein the image storage and transmission module (19) comprises a storage unit, a transmission unit and an SD card slot (8), the image storage and transmission module (19) being connected to the display screen (2).