Simple perimeter

Abstract

The utility model discloses a simple perimeter, which belongs to the medical field and comprises a base, an arc plate is arranged at the top of one end of the base through a support, an index plate is fixedly connected onto the arc plate, and a locking bolt is arranged at the top of the support. An arc plate is arranged at one end of the base, a sighting mark mechanism capable of moving along an arc path of the arc plate and cleaning the arc plate is arranged on the arc plate, a fixing frame is arranged at the top of the other end of the base, a supporting plate is arranged on the fixing frame through a supporting assembly, a shielding plate is arranged on the base through a connecting rod, and the sighting mark mechanism comprises a sliding seat matched with the arc plate. Cleaning cotton attached to the arc plate is arranged on the sliding base through a fixing plate, and an adjusting bolt is arranged on one side of the sliding base. According to the simple perimeter, the arc plate can be cleaned when the sighting mark plate moves, so that the situation that stains or foreign matters exist on the arc plate to affect the sight of a subject is avoided, and the accuracy of a detection result can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of medical technology, and in particular to a simple perimeter. Background Technology

[0002] A perimeter is an important professional instrument in the field of ophthalmology, mainly used to measure and examine the peripheral visual field of the human eye. Its principle is to divide the visual field into different areas and use a curved display screen or curved plate to present these areas. The patient looks at the screen and reports the position that can be seen, thereby obtaining a more accurate visual field map of the eye.

[0003] When a perimeter is used, its curved plate is exposed to the air. With use, stains and foreign objects can easily accumulate on the curved plate. Since perimeter testing requires high accuracy, stains or foreign objects can affect the subject's vision, causing unnecessary interference and leading to inaccurate test results. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the curved plate of the existing perimeter is covered with stains and foreign objects, which can affect the subject's vision and lead to inaccurate test results. Therefore, a simplified perimeter is proposed.

[0005] To achieve the above objectives, the present invention employs the following technology: a simplified field of view meter, comprising a base, an arc plate mounted on the top of one end of the base via a bracket, an indexing plate fixedly connected to the arc plate, a locking bolt mounted on the top of the bracket, a target mechanism mounted on the arc plate that can move along its arc path and be cleaned thereon, a fixed frame mounted on the top of the other end of the base, a support plate mounted on the fixed frame via a support assembly, and a shield mounted on the base via a connecting rod.

[0006] As a further description of the above technical solution: the target mechanism includes a slide that cooperates with the arc plate, and a cleaning cotton that fits against the arc plate is provided on the slide through a fixing plate, and an adjusting bolt is provided on one side of the slide.

[0007] As a further description of the above technical solution: the target mechanism also includes a target plate, which is detachably connected to the target plate via a connecting component on the slide.

[0008] As a further description of the above technical solution: the connecting assembly includes an insert plate fixed on the slide, a limit block is provided on the insert plate through a mounting groove, and a first spring is provided between the limit block and the inner wall of the mounting groove;

[0009] The target plate has positioning holes that cooperate with the limiting block.

[0010] As a further description of the above technical solution: the support assembly includes a support rod connected to the fixing frame, a connecting tube sleeved on the support rod, and the top of the connecting tube connected to the support plate.

[0011] As a further description of the above technical solution: a connecting groove is provided on the support rod near its top, a top head is provided on the connecting groove, and a second spring is provided between the top head and the inner wall of the connecting groove;

[0012] The connecting pipe has several limiting holes that mate with the top head.

[0013] As a further description of the above technical solution: the bottom of the support rod is provided with a threaded end that penetrates the fixing frame, and a locking nut that abuts against the fixing frame is provided on the threaded end.

[0014] As a further description of the above technical solution: a movable seat is provided at the bottom of the connecting rod, and a guide rail that cooperates with the movable seat is provided on the base, and limit plates are provided at both ends of the guide rail.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0016] 1. When using the perimeter, the visual field is recorded and drawn by moving the optotype. When the optotype plate moves, the cleaning cotton on the fixed plate is used to clean the arc plate, thereby avoiding the presence of stains or foreign objects on the arc plate that may affect the subject's vision and avoid interference with the subject's vision, thus greatly improving the accuracy of the test results.

[0017] 2. The visual target board can be easily disassembled and assembled through the connecting components, so that visual targets of different sizes, brightness and color can be quickly replaced according to the testing needs, thereby improving the testing efficiency of the field of view meter. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown. Figure 1 ;

[0019] Figure 2 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown. Figure 2 ;

[0020] Figure 3 A schematic diagram of the target mechanism provided according to an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram showing the disassembled target mechanism according to an embodiment of the present invention is provided;

[0022] Figure 5A schematic diagram of the structure of the connection component provided according to an embodiment of the present utility model is shown;

[0023] Figure 6 A schematic diagram of the structure of the support component provided according to an embodiment of the present invention is shown;

[0024] Figure 7 A schematic diagram of the support rod provided according to an embodiment of the present utility model is shown;

[0025] Figure 8 A partial structural schematic diagram according to an embodiment of the present invention is shown.

[0026] Legend:

[0027] 1. Base; 2. Bracket; 3. Arc plate; 4. Indexing plate; 5. Locking bolt; 6. Target mechanism; 61. Slide; 62. Fixing plate; 63. Cleaning cotton; 64. Adjusting bolt; 65. Connecting assembly; 651. Insert plate; 652. Mounting groove; 653. Limiting block; 654. First spring; 66. Target plate; 661. Positioning hole; 7. Fixing frame; 8. Support assembly; 81. Support rod; 811. Connecting groove; 812. Top head; 813. Second spring; 82. Connecting pipe; 83. Limiting hole; 84. Threaded end; 85. Locking nut; 9. Support plate; 10. Connecting rod; 101. Moving seat; 102. Guide rail; 103. Limiting plate; 11. Covering plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Reference Figures 1-8 This embodiment provides a simplified field of view meter, including a base 1. An arc plate 3 is provided on the top of one end of the base 1 via a bracket 2. A scale plate 4 is fixedly connected to the arc plate 3. A locking bolt 5 is provided on the top of the bracket 2. A target mechanism 6 that can move along its arc path and be cleaned is provided on the arc plate 3. A fixing frame 7 is provided on the top of the other end of the base 1. A support plate 9 is provided on the fixing frame 7 via a support component 8. A shielding plate 11 is provided on the base 1 via a connecting rod 10.

[0030] In this invention, the perimeter is fixed in place by the base 1. The patient sits in front of the perimeter, with the patient's chin placed on the support plate 9 on top of the support component 8. The support component 8 on the fixing frame 7 can be height adjusted to adjust the height of the support plate 9 so that the patient's eyes can be directly facing the center of the arc plate 3 after the patient's chin is placed on the support plate 9. The patient's eye is covered by the shielding plate 11 on the connecting rod 10. Then, the target mechanism 6 on the arc plate 3 is moved slowly from the periphery of the arc plate 3 to the center. When the patient finds the target, he / she informs the examiner. At this time, the position of the target on the arc is recorded on the visual field chart. Based on the recorded visual field chart, the doctor can assess the patient's visual field status.

[0031] The arc plate 3 is rotatably mounted on the horizontal axis at the top of the bracket 2. When the locking bolt 5 is loosened, the arc plate 3 can rotate on the horizontal axis. As the arc plate 3 rotates, it drives the indexing plate 4 to rotate. The pointer on the bracket 2, in conjunction with the indexing plate 4, can record the rotation angle of the arc plate 3. Then, the visual target mechanism 6 is moved to make the field of view more accurate.

[0032] The connecting rod 10 is flexible. After the patient's chin is supported by the support plate 9, the patient can manually move the cover plate 11 on the connecting rod 10 so that the cover plate 11 can cover one of the patient's eyes.

[0033] Specifically, such as Figures 1-4 As shown, the target mechanism 6 includes a slide 61 that cooperates with the arc plate 3. A cleaning cotton 63 that fits against the arc plate 3 is provided on the slide 61 through a fixing plate 62. An adjusting bolt 64 is provided on one side of the slide 61.

[0034] The slide 61 has a groove with the same curvature as the arc plate 3, allowing the slide 61 to slide on the arc plate 3. When the target mechanism 6 needs to move, the adjusting bolt 64 on the slide 61 is loosened first, reducing the clamping force of the adjusting bolt 64 on the arc plate 3. The slide 61 then moves on the arc plate 3. As the slide 61 moves, the cleaning cotton 63 on the fixed plate 62 moves, cleaning the arc plate 3. This allows the arc plate 3 to be cleaned during the testing process, preventing stains or foreign objects on the arc plate 3 from affecting the subject's vision and avoiding interference with the subject's vision. This greatly improves the accuracy of the test results.

[0035] It should be noted that the optotype mechanism 6 also includes an optotype plate 66, which is detachably connected to the slide 61 via a connecting component 65. By observing the examinee's response to the moving optotype plate 66, their visual field can be assessed.

[0036] Specifically, such as Figures 3-5As shown, the connecting component 65 includes an insert plate 651 fixed on the slide 61. A limit block 653 is provided on the insert plate 651 through the mounting groove 652. A first spring 654 is provided between the limit block 653 and the inner wall of the mounting groove 652.

[0037] The target plate 66 has a positioning hole 661 that cooperates with the limiting block 653.

[0038] When the visual target plate 66 needs to be disassembled and replaced, press the limiting block 653 on the insert plate 651 to compress the first spring 654 and retract it into the mounting groove 652. Then, the visual target plate 66 can be pulled out from the insert plate 651. During installation, align the positioning hole 661 of the visual target plate 66 with the insert plate 651, and then press the visual target plate 66 to achieve insertion and fixation. This facilitates the installation and disassembly of the visual target plate 66, and allows for quick replacement of visual target plates 66 of different sizes, brightness, and colors according to testing needs, thereby improving the testing efficiency of the field of view meter.

[0039] Specifically, such as Figure 1 and Figure 6 As shown, the support assembly 8 includes a support rod 81 connected to the fixing frame 7, a connecting pipe 82 sleeved on the support rod 81, and the top of the connecting pipe 82 connected to the support plate 9.

[0040] The support rod 81 and the connecting tube 82 form a support structure for supporting the tray 9, enabling the subject to place his jaw during the test.

[0041] Specifically, such as Figure 6 and Figure 7 As shown, a connecting groove 811 is provided on the support rod 81 near its top, a top head 812 is provided on the connecting groove 811, and a second spring 813 is provided between the top head 812 and the inner wall of the connecting groove 811.

[0042] The connecting pipe 82 has several limiting holes 83 that cooperate with the top head 812.

[0043] When adjusting the height of the pallet 9, press the top head 812 to compress the second spring 813 and retract it into the connecting groove 811. At this time, the top head 812 disengages from the limiting hole 83 of the connecting tube 82. Then, pull the connecting tube 82 to move it up and down on the support rod 81, thereby adjusting the height of the pallet 9. After the pallet 9 moves to the corresponding position, the top head 812 pops out under the action of the second spring 813 and gets stuck in the corresponding limiting hole 83, realizing the relative fixation of the connecting tube 82 and the support rod 81, thereby completing the adjustment of the height of the pallet 9.

[0044] It should be noted that the bottom of the support rod 81 is provided with a threaded end 84 that passes through the fixing frame 7, and a locking nut 85 is provided on the threaded end 84 that abuts against the fixing frame 7. The threaded end 84 and the locking nut 85 are used to facilitate the easy assembly and disassembly of the support assembly 8 and the fixing frame 7, thereby making it convenient to maintain and repair the support assembly 8 and its top support plate 9, and extending its service life.

[0045] Specifically, such as Figure 1 and Figure 8 As shown, a movable seat 101 is provided at the bottom of the connecting rod 10, and a guide rail 102 that cooperates with the movable seat 101 is provided on the base 1, and limit plates 103 are provided at both ends of the guide rail 102.

[0046] The shield 11 on the connecting rod 10 can move laterally via the movable seat 101 and the guide rail 102. When the subject's chin is placed on the support plate 9 for testing, the shield 11 is used to cover one eye. The movable shield 11 can cover the left and right eyes as needed during the test.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A simplified field of view meter, characterized in that, The base (1) includes an arc plate (3) at one end of the base (1) via a bracket (2), an indexing plate (4) is fixedly connected to the arc plate (3), a locking bolt (5) is provided at the top of the bracket (2), a target mechanism (6) is provided on the arc plate (3) that can move along its arc path and clean it, a fixing frame (7) is provided at the top of the other end of the base (1), a support plate (9) is provided on the fixing frame (7) via a support assembly (8), and a shield plate (11) is provided on the base (1) via a connecting rod (10).

2. The simplified field of view meter according to claim 1, characterized in that, The target mechanism (6) includes a slide (61) that cooperates with the arc plate (3). A cleaning cotton (63) that fits against the arc plate (3) is provided on the slide (61) via a fixing plate (62). An adjusting bolt (64) is provided on one side of the slide (61).

3. A simplified field of view meter according to claim 2, characterized in that, The target mechanism (6) also includes a target plate (66), which is detachably connected to the target plate (66) via a connecting component (65) on a slide (61).

4. A simplified field of view meter according to claim 3, characterized in that, The connecting assembly (65) includes a plate (651) fixed on a slide (61), a limiting block (653) is provided on the plate (651) through a mounting groove (652), and a first spring (654) is provided between the limiting block (653) and the inner wall of the mounting groove (652). The target plate (66) is provided with a positioning hole (661) that cooperates with the limiting block (653).

5. A simplified field of view meter according to claim 1, characterized in that, The support assembly (8) includes a support rod (81) connected to the fixing frame (7), and a connecting tube (82) is sleeved on the support rod (81). The top of the connecting tube (82) is connected to the support plate (9).

6. A simplified field of view meter according to claim 5, characterized in that, A connecting groove (811) is provided on the support rod (81) near its top. A top head (812) is provided on the connecting groove (811), and a second spring (813) is provided between the top head (812) and the inner wall of the connecting groove (811). The connecting pipe (82) has several limiting holes (83) that cooperate with the top head (812).

7. A simplified field of view meter according to claim 5 or 6, characterized in that, The bottom of the support rod (81) is provided with a threaded end (84) that passes through the fixing frame (7), and a locking nut (85) that abuts against the fixing frame (7) is provided on the threaded end (84).

8. A simplified field of view meter according to claim 1, characterized in that, The bottom of the connecting rod (10) is provided with a movable seat (101), and the base (1) is provided with a guide rail (102) that cooperates with the movable seat (101), and the two ends of the guide rail (102) are provided with limit plates (103).

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