Two-channel confocal laser fundus angiography system

Abstract

The utility model provides a two-channel confocal laser fundus angiography system, including optical device, control device, host and panel, the control device is connected with optical device, host and panel respectively, the optical device includes optical detector, the control device includes: the analog-digital conversion chip is set to be connected with optical detector, and the analog-digital conversion chip is set to be connected with the optical detector. Converting the fundus analog signal acquired by the optical detector into a fundus digital signal; one end of the FPGA chip is connected with the analog-digital conversion chip, and the other end of the FPGA chip is respectively connected with the USB chip and the wireless control chip; one end of the USB chip is connected with the FPGA chip, and the other end of the USB chip is connected with the host; one end of the wireless control chip is connected with the FPGA chip, the other end of the wireless control chip is connected with the tablet computer, and the wireless control chip transmits the received fundus digital signals to the tablet computer through a wireless network. According to the scheme, fundus information can be presented on the tablet in a wireless transmission mode, and the tablet is suitable for various application scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of ophthalmology, in particular to a dual-channel confocal laser fundus angiography system. Background Art

[0002] Current ophthalmic laser fundus angiography systems usually adopt a single-channel transmission method, that is, the working mode of the host and the display, and users need to use a keyboard and mouse for control. This method is widely used in traditional medical environments. However, in scenarios where space is limited, it is inconvenient to use a keyboard and mouse. In order to improve the convenience and flexibility of the equipment, the software interface is projected onto mobile devices such as tablets through screen projection to solve this problem. However, the existing screen projection technology has problems such as poor image transmission quality, easy freezes, disconnections and low resolution, which affect the user experience and diagnostic accuracy. In addition, the screen projection only displays the desktop image of the host, and software operations and host control are not possible. Users still need to rely on the keyboard and mouse, and still cannot directly view clear images on the tablet or operate and control the system. Summary of the Invention

[0003] The object of the present invention is to provide a dual-channel confocal laser fundus angiography system to solve the technical problem in the prior art that it is impossible to directly view the images of the fundus angiography system on a tablet and to operate and control the system.

[0004] In a first aspect, the present invention provides a dual-channel confocal laser fundus angiography system, comprising an optical device, a control device, a host, and a tablet, wherein the control device is connected to the optical device, the host, and the tablet, respectively; the optical device includes an optical detector; and the control device includes:

[0005] an analog-to-digital conversion chip, configured to be connected to the optical detector and convert the fundus analog signal collected by the optical detector into a fundus digital signal;

[0006] An FPGA chip is configured to be connected to the analog-to-digital conversion chip at one end and to be connected to the USB chip and the wireless control chip at the other end;

[0007] A USB chip, configured to connect one end to the FPGA chip and the other end to the host;

[0008] The wireless control chip is configured to be connected to the FPGA chip at one end and to be connected to the tablet at the other end, and transmits the received fundus digital signal to the tablet via a wireless network.

[0009] Optionally, the control device further includes:

[0010] a motor drive chip, configured to be connected to the FPGA chip and receive a control signal sent by the FPGA chip;

[0011] A motor is configured to be connected to the motor driving chip and is used to adjust the focal length of the optical device.

[0012] Optionally, the control device further includes:

[0013] The digital-to-analog conversion chip is configured to be connected to the FPGA chip and convert the digital signal sent by the FPGA chip into an analog signal.

[0014] Optionally, the optical device further comprises:

[0015] The galvanometer is configured to be connected to the digital-to-analog conversion chip, receive the control signal output by the digital-to-analog conversion chip, and adjust the position and range of the laser for scanning the fundus.

[0016] Optionally, the optical device further comprises:

[0017] A laser is configured to be connected to the FPGA chip and is used to emit laser light for scanning the fundus.

[0018] Optionally, the wireless control chip includes:

[0019] A signal enhancement module, used to enhance the stability of received fundus signals and control signals;

[0020] The interface module is connected to the FPGA chip and is used for transmitting fundus signal data.

[0021] Optionally, the FPGA chip includes:

[0022] A data verification module is used to verify the received and sent fundus signal data;

[0023] Embedded memory for storing received fundus signals and data.

[0024] Optionally, the wireless control chip is wirelessly connected to the tablet via Wi-Fi.

[0025] According to the technical solution of this utility model, a wireless control chip is connected to the FPGA chip to receive fundus signals and transmit them wirelessly to the tablet, enabling direct viewing of fundus imaging system images and system control on the tablet. Furthermore, by receiving and transmitting signals to a host computer via a USB chip, the fundus imaging system images can be displayed on a display connected to the host computer. Users can operate the system using a keyboard and mouse, achieving dual-screen display.

[0026] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A structural diagram of a dual-channel confocal laser fundus angiography system according to one embodiment of the present application is shown;

[0028] Figure 2 shows a structural diagram of a dual-channel confocal laser fundus angiography system according to another embodiment of the present application;

[0029] Figure 3 The figure shows the internal structure of a wireless control chip according to one embodiment of the present application;

[0030] Figure 4 The figure shows the internal structure of an FPGA chip according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] As used herein, the terms "comprise," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0033] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] Figure 1 FIG2 shows a structural diagram of a dual-channel confocal laser fundus angiography system according to some embodiments of the present application. Figure 1As shown, the dual-channel confocal laser fundus angiography system 100 includes an optical device 110, a control device 120, a host 130, and a tablet 140. The control device 120 includes an analog-to-digital conversion chip 121, an FPGA chip 122, a USB chip 123, and a wireless control chip 124. The optical device 110 includes an optical detector 111, which is connected to the analog-to-digital conversion chip 121 within the control device 120. The optical detector 111 converts the received fundus light signal into a fundus analog signal and transmits it to the analog-to-digital conversion chip 121. The analog-to-digital conversion chip 121 is connected to the FPGA chip 122, converts the received fundus analog signal into a fundus digital signal, and transmits it to the FPGA chip 122. The FPGA chip 122 is connected to the USB chip 123 and the wireless control chip 124, respectively, to process the received fundus digital signal and transmit the processed fundus digital signal to the USB chip 123 and the wireless control chip 124, respectively. USB chip 123 is connected to host 130 and transmits the received digital fundus signals to host 130. Host 130 is connected to a display screen, which displays the fundus information from the confocal laser fundus angiography system on the screen. The user can view the fundus information on the screen and operate and analyze the dual-channel confocal laser fundus angiography system using a mouse and keyboard. Simultaneously, wireless control chip 124 is wirelessly connected to tablet 140 and transmits the received digital fundus signals to tablet 140 via a wireless communication protocol. Tablet 140 receives and displays the digital fundus signals. The user can view the dual-channel confocal laser fundus angiography system using the corresponding application or software on tablet 140 and operate and analyze it using the touch screen.

[0035] Users can control the dual-channel confocal laser fundus angiography system 100 through an application program interface (API) on a host or tablet, such as adjusting scanning parameters and viewing and analyzing images. The host 130 transmits user control commands via a wired connection to the USB chip 123, which then transmits them to the FPGA chip 122 for system control. The tablet 140 wirelessly connects to the wireless control chip 124 and transmits user control commands to the wireless control chip 124 via a wireless transmission protocol, which then transmits them to the FPGA chip 122 for system control.

[0036] According to the technical solution of this embodiment, a wireless control chip connects to the FPGA chip, receives fundus signals, and transmits them wirelessly to the tablet, enabling direct viewing of fundus imaging system images and system control on the tablet. Furthermore, by receiving and transmitting signals to a host computer via a USB chip, the fundus imaging system images can be displayed on a display connected to the host computer, allowing users to operate the system using a keyboard and mouse, achieving dual-screen display.

[0037] Figure 2 FIG1 shows a structural diagram of a dual-channel confocal laser fundus angiography system according to another embodiment of the present invention. Figure 2 As shown, the control device 120 also includes a digital-to-analog conversion chip 127, and the optical device also includes a galvanometer 112 and a laser 113. When the dual-channel confocal laser fundus angiography system 100 is started, each module is initialized. At this time, the FPGA chip 122 sends a control signal to the laser 113 based on preset configuration parameters, such as laser power and pulse frequency, to configure the laser 113 and adjust the emission power and laser frequency of the laser 113. Based on the control signal sent by the FPGA chip 122, the laser 113 emits a scanning laser toward the patient's fundus. The scanning laser passes through the galvanometer 112 and is irradiated onto the patient's fundus for scanning. At the same time, the FPGA chip 122 sends a signal to the digital-to-analog conversion chip 127 to control the galvanometer 122 based on the system's preset scanning parameters, such as scanning range, scanning speed, etc. However, these control signals are usually digital signals, which need to be converted into analog signals by the digital-to-analog conversion chip 127 and then sent to the galvanometer 112 to control the swing of the galvanometer 112 so that the laser beam scans the patient's fundus along a predetermined path. The light signal reflected by the patient's fundus after laser irradiation is received by the optical detector 111, thereby achieving high-precision image acquisition. The optical detector 111 converts the collected fundus light signal into an analog signal and transmits it to the analog-to-digital conversion chip 121. The analog-to-digital conversion chip 121 converts the fundus analog signal into a fundus digital signal and transmits it to the FPGA chip 122. The FPGA chip 122 processes the received fundus digital signal and sends the processed fundus signal to the USB chip 123 and the wireless control chip 124 respectively. The fundus information is then presented through the host 130 connected to the USB chip by wire, the display screen, and the tablet 140 wirelessly connected to the wireless control chip 124 for the user to view and operate.

[0038] refer to Figure 2 The control device 120 further includes a motor driver chip 125 and a motor 126. The motor driver chip 125 is connected to the FPGA chip 122, and the motor 126 is connected to the motor driver chip 125. The FPGA chip 122 sends a control signal to the motor driver chip 125 based on the results of pre-processing and real-time analysis of the received fundus digital signal. Based on the received control signal, the motor driver chip 125 drives the motor 126 to adjust the focal length of the optical device 110 to ensure a clear image focus.

[0039] In some embodiments, the FPGA chip 122 pre-processes the received fundus digital signal, including denoising, filtering, and enhancing the fundus digital signal.

[0040] In some embodiments, the FPGA chip 122 performs real-time analysis on the pre-processed data to determine whether the current image quality and the current focal length are appropriate.

[0041] In some feasible embodiments, the wireless control chip 124 transmits signals using a wireless communication protocol, including Wi-Fi.

[0042] In some feasible embodiments, the model of the wireless control chip 124 is CC3235.

[0043] In some feasible embodiments, the model of the USB chip 123 is CYUSB3014.

[0044] According to the technical solution of this embodiment, a laser emits a scanning laser, a galvanometer controls the laser's scanning range and speed, and scans the patient's fundus. A motor adjusts the optical device's focal length to achieve clearer fundus images. Simultaneously, an optical detector collects and transmits fundus information, which is processed by an analog-to-digital conversion chip and an FPGA chip before being sent to a USB chip and a wireless control chip. Ultimately, the information is displayed on a display and tablet, achieving dual-channel fundus information transmission and providing greater user flexibility.

[0045] Figure 3 FIG1 shows the internal structure of a wireless control chip according to an embodiment of the present application. Figure 2 As shown, wireless control chip 124 contains a signal enhancement module 1241 and an interface module 1242. Signal enhancement module 1241 is used to enhance the transmission range and stability of signals, including fundus information transmitted by FPGA chip 122 and control signals used by users to operate the system on tablet 140. Interface module 1242 is connected to the FPGA chip to transmit fundus information and data.

[0046] Figure 4 FIG. 1 shows an internal structure diagram of an FPGA chip according to an embodiment of the present application. Figure 3 As shown, FPGA chip 122 includes a data verification module 1221 and an embedded memory 1222. Data verification module 1221 is used to verify received and transmitted fundus signals, control signals, and other data to ensure data accuracy during transmission. Embedded memory 1222 is embedded in the FPGA chip and is used to store received fundus information data.

[0047] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A dual-channel confocal laser fundus angiography system, characterized in that: The device comprises an optical device, a control device, a host and a tablet, wherein the control device is connected to the optical device, the host and the tablet respectively, the optical device comprises an optical detector, and the control device comprises: an analog-to-digital conversion chip, configured to be connected to the optical detector and to convert the analog fundus signal collected by the optical detector into a digital fundus signal; The FPGA chip is configured to have one end connected to the analog-to-digital conversion chip and the other end connected to the USB chip and the wireless control chip respectively; A USB chip, one end of which is connected to the FPGA chip, and the other end of which is connected to the host; The wireless control chip is configured to be connected to the FPGA chip at one end and to be connected to the tablet at the other end, so as to transmit the received fundus digital signal to the tablet via a wireless network.

2. The dual-channel confocal laser fundus angiography system according to claim 1, characterized in that: The control device also includes: A motor driving chip, configured to be connected to the FPGA chip and receive a control signal sent by the FPGA chip; A motor is configured to be connected to the motor driving chip and is used to adjust the focal length of the optical device.

3. The dual-channel confocal laser fundus angiography system according to claim 1, characterized in that: The control device also includes: The digital-to-analog conversion chip is configured to be connected to the FPGA chip and convert the digital signal sent by the FPGA chip into an analog signal.

4. The dual-channel confocal laser fundus angiography system according to claim 3, characterized in that: The optical device further comprises: The galvanometer is configured to be connected to the digital-to-analog conversion chip, receive the control signal output by the digital-to-analog conversion chip, and adjust the position and range of the laser for scanning the fundus.

5. The dual-channel confocal laser fundus angiography system according to claim 1, characterized in that: The optical device further comprises: The laser is configured to be connected to the FPGA chip and is used to emit laser for scanning the fundus.

6. The dual-channel confocal laser fundus angiography system according to claim 1, characterized in that: The wireless control chip comprises: A signal enhancement module, used to enhance the stability of received fundus signals and control signals; The interface module is connected to the FPGA chip and is used for transmitting fundus signal data.

7. The dual-channel confocal laser fundus angiography system according to claim 1, characterized in that: The FPGA chip comprises: A data verification module, used to verify the received and sent fundus signal data; Embedded memory for storing received fundus signals and data.

8. The dual-channel confocal laser fundus angiography system according to claim 1, characterized in that: The wireless control chip is wirelessly connected to the tablet via Wi-Fi.

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