Visual field inspection instrument and visual field inspection comprehensive table

Abstract

The utility model relates to the field of medical ophthalmology, and particularly discloses a visual field inspection instrument and a visual field inspection comprehensive table. The visual field inspection instrument comprises a machine body and a reaction recorder which is connected to the machine body and used for recording the reaction of a patient to light stimulation, and the reaction recorder is a pedal switch. The visual field inspection comprehensive table comprises a visual field inspection instrument and a supporting table used for supporting the visual field inspection instrument. According to the utility model, the neck fatigue and discomfort of a patient in the examination process can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical ophthalmology, and in particular to a visual field testing instrument and a visual field testing integrated table. Background Technology

[0002] A visual field analyzer is a specialized ophthalmic device used to assess and detect the range and sensitivity of the human eye's visual field. It plays a crucial role in the diagnosis and treatment of eye diseases, particularly in the detection of glaucoma, optic nerve disorders, and retinal diseases. The analyzer uses a light source to generate light spots or patterns of varying brightness and color. These spots or patterns are projected onto the device's screen for the patient to observe. The patient must react (e.g., by pressing a button) when they see the light spots or patterns. The device records these reactions, and data analysis software processes the data to generate visual field maps and reports for the doctor's reference.

[0003] Existing visual field testing devices mainly consist of: a light source, which provides light spots or patterns of different brightness and color to stimulate the retina; a projector, which projects the light spots or patterns onto the device's screen for the patient to observe; a response recorder, which records the patient's response to light stimulation, usually via buttons or handles; a data processor, which analyzes and processes the patient's response data to generate visual field maps and reports; and an operation and control panel, through which doctors or technicians control the device's operation, including selecting test modes and adjusting the light source brightness.

[0004] Specific examples can be found in patent CN208837909U (title: a visual field inspection instrument; publication date: 2019.05.10) or patent CN 213787326 U (title: a fully automatic intelligent visual field instrument; publication date: 2021.07.27), etc., which are well known to those skilled in the art and will not be described in detail here.

[0005] Visual field testing equipment is typically placed on a height-adjustable lift table, which together form a comprehensive visual field testing platform.

[0006] During the examination using existing visual field testing equipment, patients need to fix their heads in a specific position, usually by using a chin rest and a forehead rest (some instruments also have a head strap). Maintaining this posture for a long time (to reduce subjective error, the examination time is generally long) can easily make patients feel uncomfortable, especially for the elderly or patients with cervical spine problems, which is more likely to cause neck fatigue and discomfort. This problem has not yet been properly solved.

[0007] The inventors of this invention have learned that one of the reasons for this problem is that patients need to frequently operate buttons or handles with their hands during the examination. Their bodies cannot get extra support through their hands, and their sitting posture does not conform to the natural physiological curvature of the cervical spine. Maintaining this unnatural posture for a long time will cause the neck muscles and ligaments to be in a state of tension, leading to muscle fatigue and discomfort.

[0008] The aforementioned technical issues remain to be resolved. Utility Model Content

[0009] In view of this, the purpose of this utility model is to overcome the defects of the prior art and provide a visual field testing instrument and a visual field testing integrated table to reduce neck fatigue and discomfort for patients during the examination.

[0010] To achieve the above objectives, on the one hand, this utility model provides a visual field testing instrument, including a body and a response recorder connected to the body for recording the patient's response to light stimulation; the response recorder is a foot switch.

[0011] Furthermore, the foot switch is electrically connected to the machine body via a cable.

[0012] Furthermore, the foot switch includes a base and a resiliently resettable pedal disposed on the base, a sensor triggered by the downward movement of the pedal, and a foot controller connected to the sensor. The foot controller is connected to the main unit of the machine body.

[0013] Furthermore, the upper surface of the pedal is provided with several anti-slip strips.

[0014] Furthermore, the bottom surface of the base is provided with several suction cups.

[0015] Furthermore, the host is connected to a timer. When the pedal is pressed, the timer starts counting. The host determines that the pedal signal is a valid response and transmits it to the host computer when it remains stable when it reaches the delay threshold. When the pedal signal is interrupted within the delay threshold, it is determined to be an invalid response and the signal is ignored.

[0016] On the other hand, the present invention also provides a visual field examination table, including a visual field examiner and a support table for supporting the visual field examiner. The visual field examiner includes a body and a response recorder connected to the body for recording the patient's response to light stimulation.

[0017] The reaction recorder is a foot switch.

[0018] Furthermore, the foot switch includes a base and a resiliently resettable pedal disposed on the base, a sensor triggered by the downward movement of the pedal, and a foot controller connected to the sensor. The foot controller is connected to the main unit of the machine body.

[0019] Furthermore, the support table is a height-adjustable structure and includes a tabletop, a base plate, and a lifting mechanism disposed between the tabletop and the base plate; the base plate is provided with a fixing part for fixing a foot pedal switch.

[0020] Furthermore, the bottom surface of the base is provided with a number of positioning posts, and the fixing part is a number of positioning grooves on the top surface of the base plate that correspond one-to-one with the positioning posts.

[0021] In summary, due to the adoption of the above technical solution, this utility model has the following beneficial technical effects:

[0022] This utility model provides a visual field testing device that, by designing the reaction recorder as a foot switch, transfers the reaction action from the hands to the feet. The patient's response to light stimulation can be recorded through foot movements, freeing up both hands to provide auxiliary support for the body. This reduces the stress on the patient's neck and effectively reduces neck fatigue and discomfort during the examination. Moreover, the foot switch has a faster response speed and is easier to operate, which also improves the efficiency of visual field testing.

[0023] The visual field inspection integrated table provided by this utility model can also have the same beneficial technical effects because it applies the above-mentioned visual field inspection instrument. Attached Figure Description

[0024] The present invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of a field of view inspection device provided in Embodiment 1;

[0026] Figure 2 This is a schematic diagram of the structure of a foot switch in a field of view inspection device provided in Embodiment 1;

[0027] Figure 3 A communication principle diagram of a field of view inspection instrument provided in Embodiment 1;

[0028] Figure 4 This is a schematic diagram of the structure of a visual field inspection integrated table provided in Embodiment 2;

[0029] Figure 5 This is a diagram showing the connection between a foot switch and a support table in a vision inspection integrated console provided in Embodiment 2. Detailed Implementation

[0030] The following is a further explanation with reference to specific embodiments.

[0031] Example 1

[0032] like Figures 1 to 3As shown: This embodiment provides a visual field testing device, including a body 1 and a response recorder connected to the body 1 for recording the patient's response to light stimulation; the body 1 is the main body of the visual field testing device, which includes a housing and various existing mechanisms disposed within the housing, such as a light source, a projector, a host 101 (including a data processor), etc.; the overall principle and structure of the visual field testing device are the same as those of the prior art, and will not be described in detail here.

[0033] This embodiment provides a field of view inspection device, the main improvement of which is that the reaction recorder is a foot switch 2.

[0034] The foot switch 2 (also known as a foot button) can effectively control the device, improving the operational efficiency and convenience for medical staff. By designing the response recorder as a foot switch 2, the response action is transferred from the hand to the foot. The patient can record their response to light stimulation by moving their feet, freeing their hands to provide auxiliary support (e.g., placing their hands on a table or chair). This reduces the stress on the patient's neck and effectively reduces neck fatigue and discomfort during the examination. Moreover, the foot switch 2 has a faster response speed and is easier to operate, which also improves the efficiency of visual field examination.

[0035] In this embodiment, the foot switch 2 can be electrically connected to the body 1 (specifically, the main unit inside the body 1) via a cable 3. Both ends of the cable 3 can be configured as USB plugs, and the body 1 and the foot switch 2 are provided with corresponding ports for easy connection.

[0036] The foot switch 2 can have various structures, such as common inductive or mechanical structures, which can convert foot pedal action into circuit on / off signals or other signals. In this embodiment, the foot switch 2 includes a base 201 and a resiliently resettable pedal 202 disposed on the base 201, a sensor 203 triggered by the downward movement of the pedal 202, and a foot controller 204 connected to the sensor 203. The foot controller 204 is connected to the main unit 101 of the body 1. The sensor 203 can be a pressure-type structure or a position-type structure. When the pedal 202 is pressed, the sensor 203 detects a change in pressure or position and sends a signal to the foot controller 204. The foot controller 204 then transmits the signal to the main unit 101 through a cable.

[0037] The upper surface of the pedal 202 may be provided with several anti-slip strips 205 to improve the anti-slip performance of the pedal 202; the bottom surface of the base 201 may be provided with several suction cups 206, which can be used to fix the foot switch 2 to the ground to prevent it from moving improperly. The elastic return of the pedal 202 can be achieved by a spring.

[0038] In this embodiment, the host 101 can be connected to a timer 3. When the pedal 202 is pressed, the timer 3 starts timing. The host 101 determines a valid response and transmits it to the host computer when the foot pedal signal remains stable within the delay threshold. When the foot pedal signal is interrupted within the delay threshold, it is determined to be an invalid response and the signal is ignored. A reasonable delay threshold (e.g., 300-800 milliseconds) is set in the timer 3 to exclude accidental foot pedal movements without significantly affecting the patient's normal response. Of course, the host 101 can also be connected to an indicator 4. When a valid response is determined, the indicator 4 informs the patient, at which point the patient can release the pedal 202 and wait for the next response.

[0039] Example 2

[0040] like Figure 4 and Figure 5 As shown, this embodiment provides a visual field examination table, which includes a visual field examiner and a support table 5 for supporting the visual field examiner. The visual field examiner includes a body 1 and a response recorder connected to the body 1 for recording the patient's response to light stimulation.

[0041] The main body 1 is the main body of the visual field inspection instrument, which includes a housing and various existing mechanisms located inside the housing, such as a light source, a projector, a main unit 101 (including a data processor), etc. The overall principle and structure of the visual field inspection instrument are the same as those of the prior art, and will not be described in detail here.

[0042] This embodiment provides a visual field inspection unit, the main improvement of which is that the reaction recorder is a foot switch 2.

[0043] The foot switch 2 (also known as a foot button) can effectively control the equipment, improving the operational efficiency and convenience for medical staff. By designing the response recorder as a foot switch 2 structure, the response action is transferred from the hand to the foot. The patient's response to light stimulation can be recorded through foot movements, freeing up both hands to provide auxiliary support for the body. This reduces the stress on the patient's neck and effectively reduces neck fatigue and discomfort during the examination. Moreover, the foot switch 2 has a faster response speed and is easier to operate, which also improves the efficiency of visual field examination.

[0044] In this embodiment, the foot switch 2 can be electrically connected to the body 1 (specifically, the host 101 inside the body 1) via a cable. Both ends of the cable 3 can be configured as USB plugs, and the body 1 and the foot switch 2 are provided with corresponding ports for easy connection.

[0045] The foot switch 2 can have various structures, such as common inductive or mechanical structures, which can convert foot pedal action into circuit on / off signals or other signals. In this embodiment, the foot switch 2 includes a base 201 and a resiliently resettable pedal 202 disposed on the base 201, a sensor 203 triggered by the downward movement of the pedal 202, and a foot controller 204 connected to the sensor 203. The foot controller 204 is connected to the main unit 101 of the body 1. The sensor 203 can be a pressure-type or position-type structure. When the pedal 202 is pressed, the sensor 203 detects a change in pressure or position and sends a signal to the foot controller 204. The foot controller 204 then transmits the signal to the main unit 101 via a cable. The resilient reset of the pedal 202 can be achieved by a spring.

[0046] The upper surface of pedal 202 may be provided with several anti-slip strips to improve the anti-slip performance of pedal 202.

[0047] In this embodiment, the host 101 can be connected to a timer 3. When the pedal 202 is pressed, the timer 3 starts timing. The host 101 determines a valid response and transmits it to the host computer when the foot pedal signal remains stable within a delay threshold. When the foot pedal signal is interrupted within the delay threshold, it is determined to be an invalid response and the signal is ignored. A reasonable delay threshold (e.g., 300-800 milliseconds) is set in the timer 3 to exclude accidental foot pedal movements without significantly affecting the patient's normal response. Of course, the host 101 can be connected to an indicator. When a valid response is determined, the indicator informs the patient, at which point the patient can release the pedal 202 and wait for the next response.

[0048] In this embodiment, the support table 5 is a height-adjustable structure and includes a tabletop 51, a base plate 52, and a lifting mechanism 53 disposed between the tabletop 51 and the base plate 52. The base plate 52 is provided with a fixing part for fixing the foot switch 2. The tabletop 51 and the base plate 52 are parallel. The lifting mechanism 53 can drive the tabletop 51 to rise or fall to adjust the height of the visual field analyzer to meet the needs of different patients. The structure of the lifting mechanism 53 is the same as that of the prior art; for example, an existing lifting cylinder can be used. The bottom of the base plate 52 can also be provided with casters and related locking mechanisms to facilitate the movement of the support table.

[0049] The fixing part is provided to prevent improper movement of the foot switch 2, and it can be achieved through various structures; for example, the bottom surface of the base 201 is provided with several positioning posts 207, and the fixing part is provided with several positioning grooves 52a on the top surface of the base plate 52, which correspond one-to-one with the positioning posts. Of course, the fixing part can also be other structures, as long as it can play a corresponding limiting role.

[0050] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the protection scope of this utility model.

Claims

1. A visual field testing device, comprising a body and a response recorder connected to the body for recording a patient's response to light stimulation; characterized in that: The reaction recorder is a foot switch; The foot switch includes a base and a resiliently resettable pedal disposed on the base, a sensor triggered by the downward movement of the pedal, and a foot controller connected to the sensor. The foot controller is connected to the main unit of the machine. The host is connected to a timer. When the pedal is pressed, the timer starts counting. The host determines that the pedal signal is a valid response and transmits it to the host computer when it remains stable when it reaches the delay threshold. When the pedal signal is interrupted within the delay threshold, it is determined to be an invalid response and the signal is ignored.

2. The visual field inspection instrument according to claim 1, characterized in that: The foot switch is electrically connected to the machine body via a cable.

3. The visual field inspection device according to claim 1, characterized in that: The upper surface of the pedal is provided with several anti-slip strips.

4. A visual field inspection device according to claim 1, characterized in that: The base has several suction cups on its bottom surface.

5. A visual field testing table, comprising a visual field testing instrument and a support table for supporting the visual field testing instrument, wherein the visual field testing instrument includes a body and a response recorder connected to the body for recording the patient's response to light stimulation; characterized in that: The reaction recorder is a foot switch; The foot switch includes a base and a resiliently resettable pedal disposed on the base, a sensor triggered by the downward movement of the pedal, and a foot controller connected to the sensor. The foot controller is connected to the main unit of the machine. The host is connected to a timer. When the pedal is pressed, the timer starts counting. The host determines that the pedal signal is a valid response and transmits it to the host computer when it remains stable when it reaches the delay threshold. When the pedal signal is interrupted within the delay threshold, it is determined to be an invalid response and the signal is ignored.

6. A visual field inspection unit according to claim 5, characterized in that: The support table is a height-adjustable structure and includes a tabletop, a base plate, and a lifting mechanism located between the tabletop and the base plate; the base plate is provided with a fixing part for fixing a foot pedal switch.

7. A visual field inspection unit according to claim 6, characterized in that: The base has several positioning posts on its bottom surface, and the fixing part consists of several positioning grooves on the top surface of the base plate that correspond one-to-one with the positioning posts.

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