Fundus laser therapeutic apparatus and control method thereof

Abstract

The present invention provides a fundus laser therapeutic instrument and a control method thereof, wherein the fundus laser therapeutic instrument comprises an objective lens; a main beam splitter; an imaging module, wherein the imaging module comprises a first scanning galvanometer, a first beam splitter, an illumination light source, a pinhole and an imaging sensor; the illumination light source, the first beam splitter, the first scanning galvanometer, the main beam splitter and the objective lens form a scanning light path; the objective lens, the main beam splitter, the first scanning galvanometer, the first beam splitter, the pinhole and the imaging sensor form an imaging light path; and a treatment module, wherein the treatment module comprises a second scanning galvanometer and a treatment light source; the treatment light source, the second scanning galvanometer, the main beam splitter and the objective lens form a treatment light path for treating the fundus. Compared with the prior art, the fundus laser therapeutic instrument can not only perform confocal scanning imaging on the fundus, but also emit a treatment laser to the fundus lesion area as needed to treat the fundus lesion, thereby effectively reducing the workload of doctors.

Description

Technical Field

[0001] The invention relates to a fundus laser therapeutic apparatus and a control method thereof. Background Art

[0002] Fundus cameras belong to the field of medical imaging and are used to obtain images of the human retina so that medical personnel can examine fundus diseases or assist medical personnel in judging the condition of other organs. Since the blood vessels in the fundus are the only blood vessels in the human body that can be directly observed through the body surface, medical personnel can use fundus cameras to check whether there are lesions in the optic nerve, retina, choroid and refractive media in the fundus. Fundus cameras can also be used to assist in the diagnosis and condition judgment of other systemic diseases, such as screening retinal photos to detect cerebral infarction, cerebral hemorrhage, cerebral arteriosclerosis, brain tumors, diabetes, kidney disease, hypertension, retinopathy of prematurity, glaucoma, age-related macular degeneration, etc. The earlier these diseases are detected, the more conducive to clinical treatment. Therefore, fundus cameras are widely used in clinical screening of fundus diseases and have become an indispensable medical device.

[0003] However, existing confocal laser fundus imagers can only image the fundus, but cannot treat it. For example, when a doctor finds that a patient's retina has detached through a confocal laser fundus imager, in order to avoid this situation, the doctor usually needs to use another laser photocoagulation device for treatment, instead of directly treating it through the confocal laser fundus imager, which increases the doctor's workload and also pushes up the patient's treatment costs.

[0004] In view of the above problems, it is necessary to provide a fundus laser therapy device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a fundus laser therapeutic device, which can not only perform confocal scanning imaging of the fundus, but also emit therapeutic laser to the fundus lesion area as needed to treat the fundus lesions, thereby effectively reducing the workload of doctors and reducing treatment costs.

[0006] To achieve the above-mentioned objectives, the present invention provides a fundus laser therapy device, comprising: an objective lens; a main beam splitter; an imaging module, wherein the imaging module comprises a first scanning galvanometer, a first beam splitter, an illumination light source, a pinhole and an imaging sensor; the illumination light source, the first beam splitter, the first scanning galvanometer, the main beam splitter and the objective lens form a scanning light path; the objective lens, the main beam splitter, the first scanning galvanometer, the first beam splitter, the pinhole and the imaging sensor form an imaging light path; and a treatment module, wherein the treatment module comprises a second scanning galvanometer and a treatment light source; the treatment light source, the second scanning galvanometer, the main beam splitter and the objective lens form a treatment light path for treating the fundus.

[0007] As a further improvement of the present invention, the fundus laser therapy apparatus further includes an identification module and a control module for identifying a treatment area on a fundus image; the control module controls the treatment module to direct the treatment light toward the treatment area.

[0008] As a further improvement of the present invention, the fundus laser therapy device also includes an image recognition module; the image recognition module analyzes the fundus image acquired by the imaging module to obtain the light spot of the therapeutic laser irradiated on the fundus; the control module controls the movement of the second scanning galvanometer so that the light spot is located within the treatment area.

[0009] As a further improvement of the present invention, the treatment module also includes a second focusing lens group to adjust the size of the light spot of the treatment laser irradiated on the fundus through the second focusing lens group.

[0010] As a further improvement of the present invention, the fundus laser therapy device also includes an image recognition module; the treatment module also includes a second focusing lens group to adjust the size of the spot of the treatment laser irradiated on the fundus; the image recognition module analyzes the fundus image acquired by the imaging module to obtain the spot area of ​​the treatment laser irradiated on the fundus and the treatment area area; when the spot area is larger than the treatment area area, the control module controls the second focusing lens group to work so that the spot area is smaller than the treatment area area.

[0011] As a further improvement of the present invention, the therapeutic light source also includes a power adjustment circuit; the therapeutic light source has an identification state and a therapeutic state; when the therapeutic light source is in the identification state, the power adjustment circuit enables the therapeutic light source to operate at a first power; when the therapeutic light source is in the therapeutic state, the power adjustment circuit enables the therapeutic light source to operate at a second power; wherein the first power is less than the second power.

[0012] As a further improvement of the present invention, when the light spot is located outside the treatment area, the control module controls the power adjustment circuit to operate so that the treatment light source is in an identification state.

[0013] As a further improvement of the present invention, when the control module receives a treatment command, the control module controls the power adjustment circuit to operate so that the treatment light source is in a treatment state.

[0014] As a further improvement of the present invention, the therapeutic light source includes a first laser source of a first power and a second laser source of a second power; when the therapeutic light source is in an identification state, the first laser source works; when the therapeutic light source is in a treatment state, the second laser source works.

[0015] As a further improvement of the present invention, the imaging module further includes a scanning lens group located between the main beam splitter and the first scanning galvanometer.

[0016] The present invention also provides a control method for fundus laser treatment, comprising the following steps: S1: acquiring a fundus image of the patient and marking a treatment area; S2: controlling a treatment module to direct treatment light to a fundus area corresponding to the treatment area.

[0017] As a further improvement of the present invention, step S2 also includes the following steps: S21: determine whether the light spot emitted by the treatment module to the fundus is located in the fundus area corresponding to the treatment area; if so, jump to step S22; otherwise, jump to step S23; S22: wait for the treatment command; S23: control the second scanning galvanometer to work so that the light spot is located in the fundus area corresponding to the treatment area, and jump to step S21.

[0018] As a further improvement of the present invention, step S2 also includes step S20: determining whether the area of ​​the light spot emitted by the treatment module to the fundus is smaller than the area of ​​the fundus area corresponding to the treatment area; if so, jumping to step S21; otherwise, controlling the second focusing lens group to work so that the area of ​​the light spot is smaller than the area of ​​the fundus area corresponding to the treatment area.

[0019] As a further improvement of the present invention, the step S21 further includes the following steps: S211: determine whether the light spot is located in the fundus area corresponding to the treatment area; if not, jump to step S212; S212: control the treatment light source to operate at the first power.

[0020] The beneficial effects of the present invention are as follows: the fundus laser therapeutic apparatus of the present invention can not only perform confocal scanning imaging of the fundus, but also emit therapeutic laser to the fundus lesion area as needed to treat the fundus lesions, thereby effectively reducing the workload of doctors and reducing the cost of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the fundus laser therapeutic apparatus of the present invention.

[0022] Figure 2 It is a module schematic diagram of the fundus laser therapeutic apparatus of the present invention.

[0023] Figure 3 It is a flow chart of the control method of the fundus laser therapeutic apparatus.

[0024] Figure 4 This is a flowchart of step S2.

[0025] Figure 5 This is a flowchart of step S21. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] See also Figure 1 as well as Figure 2 As shown, the present invention discloses a fundus laser therapeutic device 100, comprising an objective lens 10, a main beam splitter 20, an imaging module 30, a therapeutic module 40, a marking module 50, an image recognition module 60 and a control module 70. The objective lens 10 is a double aspherical lens.

[0028] See also Figure 1 As shown Figure 2 As shown, the imaging module 30 includes a scanning lens group 31, a first scanning galvanometer 32, a first beam splitter 33, an illumination light source 34, an image lens 35, a pinhole 36 and an imaging sensor 37. The laser emitted by the illumination light source 34 enters the human eye 80 after passing through the first beam splitter 33, the first scanning galvanometer 32, the scanning lens group 31, the main beam splitter 20 and the objective lens 10, which is the scanning light path. The light reflected back from the retina of the human eye 80 enters the imaging sensor 37 after passing through the objective lens 10, the main beam splitter 20, the scanning lens group 31, the first scanning galvanometer 32, the first beam splitter 33, the image lens 35 and the pinhole 36 to generate a fundus image, which is the imaging light path. The scanning lens group 31 is composed of a single lens, a cemented lens, etc. This arrangement can effectively eliminate stray light. The first beam splitter 33 can be a two-way color mirror, a beam splitter prism, a hollow reflector, etc. The illumination light source 34 is a laser source.

[0029] See also Figure 1 As shown, the treatment module 40 includes a second focusing lens group 41, a second scanning galvanometer 42 and a treatment light source 43. The treatment laser emitted by the treatment light source 43 enters the human eye 80 after passing through the second scanning galvanometer 42, the second focusing lens group 41, the main beam splitter 20 and the objective lens 10, and irradiates the fundus of the human eye 80, thereby forming a light spot on the fundus. The second focusing lens group 41 is used to adjust the size of the light spot irradiated by the treatment laser on the fundus. The treatment light source 43 is a treatment laser source.

[0030] See also Figure 2As shown, the identification module 50 is used to identify the treatment area on the fundus image obtained by the imaging module 30. The image recognition module 60 is used to analyze the fundus image obtained by the imaging module 30, and calculate the area of ​​the treatment area, the area of ​​the light spot irradiated by the treatment laser on the fundus, and the position of the light spot. The control module 70 is used to control the treatment module 40 to shoot the treatment laser to the treatment area to prevent the treatment laser from accidentally injuring the non-lesion area. When the image recognition module 60 detects that the light spot is outside the treatment area, the control module 70 controls the second scanning galvanometer 42 to move so that the light spot is located in the treatment area. When the image recognition module 60 detects that the area of ​​the light spot is larger than the area of ​​the treatment area, the control module 70 controls the alarm module (not shown) to issue an alarm to remind the user to confirm whether an abnormality occurs, or the control module 70 directly controls the second focusing lens group 41 to work so that the area of ​​the light spot is smaller than the area of ​​the treatment area. Preferably, the therapeutic light source 43 also includes a power adjustment circuit (not shown) to adjust the power of the laser emitted by the therapeutic light source 43. The therapeutic light source 43 has an identification state and a treatment state. When the therapeutic light source 43 is in the identification state, the control module 70 controls the power adjustment circuit to work so that the therapeutic light source 43 works at a first power. When the therapeutic light source 43 is in the treatment state, the control module 70 controls the power adjustment circuit to work so that the therapeutic light source 43 works at a second power. Wherein, the first power is less than the second power. Such a setting can effectively prevent the therapeutic module 40 from accidentally injuring the non-lesion area of ​​the fundus due to excessive power in the calibration state. Preferably, when the image recognition module 60 detects that the light spot is outside the treatment area, the control module 70 controls the power adjustment circuit to work so that the therapeutic light source 43 is in the identification state. Such a setting can effectively improve the safety performance of the fundus laser therapeutic device 100. When the control module 70 receives a treatment command, the control module 70 controls the power adjustment circuit to operate so that the treatment light source 43 is in a treatment state.

[0031] In this embodiment, the power change of the therapeutic light source 43 is achieved by a power adjustment circuit. However, in other embodiments, the therapeutic light source 43 may also include a first laser source of a first power and a second laser source of a second power. When the therapeutic light source 43 is in the marking state, the first laser source works; when the therapeutic light source 43 is in the treatment state, the second laser source works. Of course, it can be understood that the number of the laser sources can be set as needed, and the present invention is not limited to this.

[0032] Compared with the prior art, the fundus laser therapy device 100 of the present invention can not only perform confocal scanning imaging of the fundus, but also emit therapeutic laser to the fundus lesion area as needed to treat the fundus lesions, thereby effectively reducing the workload of doctors and reducing treatment costs.

[0033] See also Figure 3 As shown, the present invention also discloses a control method of a fundus laser therapeutic apparatus, comprising the following steps:

[0034] S1: Obtain the patient's fundus image and identify the treatment area;

[0035] S2: Control the treatment module to direct the treatment light to the fundus area corresponding to the treatment area.

[0036] See also Figure 4 As shown, preferably, the step S2 further includes the following steps:

[0037] S20: Determine whether the area of ​​the light spot emitted by the treatment module to the fundus is smaller than the area of ​​the fundus area corresponding to the treatment area; if so, jump to step S21; otherwise, control the second focusing lens group to work so that the area of ​​the light spot is smaller than the area of ​​the fundus area corresponding to the treatment area.

[0038] S21: Determine whether the light spot emitted by the treatment module to the fundus is located in the fundus area corresponding to the treatment area; if so, jump to step S22; otherwise, jump to step S23:

[0039] S22: Waiting for treatment orders;

[0040] S23: Control the second scanning galvanometer to work so that the light spot is located in the fundus area corresponding to the treatment area, and jump to step S21.

[0041] See also Figure 5 As shown, preferably, the step S21 further includes the following steps:

[0042] S211: Determine whether the light spot is located in the fundus area corresponding to the treatment area; if not, jump to step S212;

[0043] S212: Control the therapeutic light source to operate at the first power.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A fundus laser therapeutic apparatus, characterized in that: include: Objective lens; Main beam splitter; An imaging module, the imaging module comprising a first scanning galvanometer, a first beam splitter, an illumination light source, a pinhole and an imaging sensor; the illumination light source, the first beam splitter, the first scanning galvanometer, the main beam splitter and the objective lens form a scanning light path; the objective lens, the main beam splitter, the first scanning galvanometer, the first beam splitter, the pinhole and the imaging sensor form an imaging light path; as well as A treatment module, the treatment module comprising a second scanning galvanometer and a treatment light source; the treatment light source, the second scanning galvanometer, the main beam splitter and the objective lens form a treatment light path for treating the fundus; The fundus laser therapeutic apparatus further comprises a marking module and a control module for marking a treatment area on a fundus image; the control module controls the treatment module to emit the treatment light to the treatment area; The fundus laser therapy instrument also includes an image recognition module; the image recognition module analyzes the fundus image acquired by the imaging module to obtain the light spot irradiated by the treatment laser on the fundus; the control module controls the movement of the second scanning galvanometer so that the light spot is located in the treatment area; the treatment module also includes a second focusing lens group to adjust the size of the light spot irradiated by the treatment laser on the fundus; the image recognition module analyzes the fundus image acquired by the imaging module to obtain the light spot area irradiated by the treatment laser on the fundus and the treatment area area; when the light spot area is larger than the treatment area area, the control module controls the second focusing lens group to work so that the light spot area is smaller than the treatment area area; The therapeutic light source also includes a power adjustment circuit; the therapeutic light source has an identification state and a therapeutic state; when the therapeutic light source is in the identification state, the power adjustment circuit enables the therapeutic light source to operate at a first power; when the therapeutic light source is in the therapeutic state, the power adjustment circuit enables the therapeutic light source to operate at a second power; wherein the first power is less than the second power.

2. The fundus laser treatment apparatus according to claim 1, characterized in that: When the light spot is outside the treatment area, the control module controls the power adjustment circuit to operate so that the treatment light source is in an identification state.

3. The fundus laser treatment apparatus according to claim 2, characterized in that: When the control module receives a treatment command, the control module controls the power adjustment circuit to operate so that the treatment light source is in a treatment state.

4. The fundus laser treatment apparatus according to claim 1, characterized in that: The therapeutic light source includes a first laser source of a first power and a second laser source of a second power; when the therapeutic light source is in an identification state, the first laser source works; when the therapeutic light source is in a therapeutic state, the second laser source works.

5. The fundus laser treatment apparatus according to claim 1, characterized in that: The imaging module also includes a scanning lens group located between the main beam splitter and the first scanning galvanometer.

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