Slit lamp illumination mechanism for an ophthalmic surgical microscope

Abstract

The utility model relates to the technical field of slit lamp, concretely relates to slit lamp illumination mechanism of ophthalmic operation microscope, including microscope body, one side fixedly connected with connecting rod of microscope body, the top fixed mounting of connecting rod has the protection shell, the rotatory connection has the reflector plate on the protection shell, one side rotatory connection has the knob of the protection shell, the knob fixedly connected with sun wheel that penetrates the protection shell, the outside meshing connection has a plurality of planet wheel of sun wheel, the outside meshing connection has the rim of planet wheel, the rim one side is provided with the fixed ring, the fixed ring fixed mounting is in the inner wall of protection shell, the rim fixedly connected with first bevel gear that one side is away from the fixed ring, one side meshing connection has second bevel gear of first bevel gear, second bevel gear rotatory connection is in the inner wall of protection shell, and the top of second bevel gear is fixedly connected with reflector plate. Compared with the prior art, the present application solves the problem of inaccuracy of slit lamp light adjustment in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of slit lamp technology, and in particular to a slit lamp illumination mechanism for an ophthalmic surgical microscope. Background Technology

[0002] A slit lamp is a high-precision ophthalmic examination and surgical aid used to observe the anterior segment structures of the eye (such as the cornea, anterior chamber, iris, and lens) and to provide high-contrast, adjustable-angle illumination during ophthalmic surgery. In ophthalmic surgical microscopes, slit lamps are not only used for examination but can also serve as part of the surgical illumination, providing a clearer surgical field of view.

[0003] In the prior art, Chinese patent document CN216317547U, entitled "Illumination Device for the Ocular Surface Tear Film Lipid Layer Attached to the Slit Lamp Illumination Mechanism in Ophthalmology," proposes that the illumination device illuminates the corneal surface at a large tilt angle, reducing noise interference from transparent areas such as the iris behind the cornea, thereby reducing noise and improving the clarity of observation and imaging of the ocular surface lipid layer. However, in practical applications, medical personnel often need to make targeted angle adjustments to the slit lamp during use to adapt to different observation needs. Existing slit lamp illumination systems typically use a single-stage gear or worm gear transmission structure to adjust the reflector angle, but these solutions still have shortcomings in terms of accuracy, stability, and ease of operation. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a slit lamp illumination mechanism for an ophthalmic surgical microscope, so as to solve the problem of inaccurate slit lamp illumination adjustment in the prior art.

[0005] To achieve the above objectives, this utility model provides a slit lamp illumination mechanism for an ophthalmic surgical microscope, comprising a microscope body, a base at the bottom of the microscope body, the microscope body being rotatably mounted on the base, a connecting rod fixedly connected to one side of the microscope body, a protective shell fixedly mounted on the top of the connecting rod, a reflector rotatably connected to the protective shell, a knob rotatably connected to one side of the protective shell, a sun gear fixedly connected to the knob through the protective shell, a plurality of planet gears meshing with the outside of the sun gear, a rim meshing with the outside of the planet gears, a fixing ring provided on one side of the rim, the fixing ring being fixedly mounted on the inner wall of the protective shell, the planet gears rotatably connected to the fixing ring, a first bevel gear fixedly connected to the side of the rim away from the fixing ring, a second bevel gear meshing with one side of the first bevel gear, the second bevel gear rotatably connected to the inner wall of the protective shell, and the top of the second bevel gear being fixedly connected to the reflector.

[0006] Preferably, a chin rest is fixedly connected to the upper side of the base, a light source is fixedly installed on the upper part of the protective shell, and the bottom of the light source is located directly above the reflector.

[0007] Preferably, the diameter of the sun gear is smaller than the diameter of the planet gears.

[0008] Preferably, the knob has a plurality of raised scale blocks evenly distributed on it.

[0009] Preferably, the protective shell is fixedly connected to the bottom of the microscope body via the connecting rod, and the protective shell rotates synchronously with the microscope body.

[0010] Preferably, the retaining ring is fixed to the inner wall of the protective shell, the plurality of planetary gears are rotatably connected on the retaining ring, and the knob passes through the protective shell and the retaining ring and is fixed to the sun gear.

[0011] The beneficial effects of this utility model are: 1. The slit lamp illumination mechanism of this ophthalmic surgical microscope adopts a planetary gear set + bevel gear transmission structure. This scheme can achieve fine adjustment of the reflector angle within the normal range of knob operation, avoiding illumination deviation caused by improper adjustment and improving the clarity and stability of the surgical field of view.

[0012] 2. The slit lamp illumination mechanism of this ophthalmic surgical microscope features a scale block design on the knob that provides clear angle feedback, allowing doctors to fine-tune the illumination direction as needed and reducing intraoperative discomfort caused by manual adjustment errors. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the positions of some internal parts of this utility model; Figure 3 This is a first-view schematic diagram of the gear set structure of this utility model; Figure 4 This is a second-view schematic diagram of the gear assembly structure of this utility model.

[0015] The diagram is marked as follows: 1. Base; 2. Microscope body; 3. Connecting rod; 4. Jaw rest; 5. Light source; 6. Reflector; 7. Protective shell; 8. Knob; 9. Fixing ring; 10. Sun gear; 11. Planetary gear; 12. Wheel rim; 13. First bevel gear; 14. Second bevel gear. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0017] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] like Figures 1 to 4As shown, a slit lamp illumination mechanism for an ophthalmic surgical microscope includes a microscope body 2, a base 1 at the bottom of the microscope body 2, the microscope body 2 being rotatably mounted on the base 1, a connecting rod 3 fixedly connected to one side of the microscope body 2, a protective shell 7 fixedly mounted on the top of the connecting rod 3, a reflector 6 rotatably connected to the protective shell 7, a knob 8 rotatably connected to one side of the protective shell 7, a sun gear 10 fixedly connected to the knob 8 through the protective shell 7, and multiple planet gears 11 meshing with the external parts of the sun gear 10. The diameter of the sun gear 10 is smaller than the diameter of the planet gears 11, and the external parts of the planet gears 11 are meshed with... The wheel rim 12 has a fixing ring 9 on one side, which is fixedly installed on the inner wall of the protective shell 7. The planetary gear 11 is rotatably connected to the fixing ring 9. A first bevel gear 13 is fixedly connected to the side of the wheel rim 12 away from the fixing ring 9. A second bevel gear 14 is meshed with the side of the first bevel gear 13. The second bevel gear 14 is rotatably connected to the inner wall of the protective shell 7. The top of the second bevel gear 14 is fixedly connected to the reflector 6. The sun gear 10 is driven by the knob 8. By using the planetary gear set to affect the transmission ratio, the angle adjustment of the reflector 6 can be made more precise, which is convenient for doctors to make fine adjustments to the direction of illumination during surgery. A fixed ring 9 supports the planetary gear 11, ensuring smooth gear transmission and preventing vibrations during adjustment, thus improving the stability of the surgical microscope's illumination. The planetary gear mechanism is more compact than traditional single-stage gear or worm gear mechanisms, allowing the entire illumination system to achieve complex adjustment functions within a limited space without affecting the overall microscope design. It enables precise adjustment of the reflector angle 6 with a small operating range, meeting different surgical needs. The knob 8 connects to the sun gear 10, allowing the surgeon to smoothly adjust the light direction by rotating the knob, avoiding the inconvenience or errors that might occur from directly adjusting the reflector. During use... In this process, when it is necessary to observe the patient's eyes, medical staff can observe by getting close to the microscope body 2. At this time, the knob 8 can be adjusted to rotate, thereby driving the sun gear 10 to drive the planet gear 11 to rotate, which in turn drives the wheel rim 12 and the first bevel gear 13 to rotate. When the first bevel gear 13 rotates, it drives the second bevel gear 14 and the reflector 6 on the second bevel gear 14 to adjust the angle. The sun gear 10 and planet gear 11 of different sizes can change the rotation stroke, making the stroke of driving the second bevel gear 14 and the reflector 6 to rotate smaller, and making it more convenient and accurate to adjust the angle of the reflector 6.

[0019] Furthermore, a jaw support 4 is fixedly connected to the upper side of the base 1, and a light source 5 is fixedly installed on the upper part of the protective shell 7. The bottom of the light source 5 is located directly above the reflector 6. The protective shell 7 is fixedly connected to the bottom of the microscope body 2 through the connecting rod 3. The protective shell 7 and the microscope body 2 rotate synchronously. The jaw support 4 provides support to keep the patient's head stable, reduce unnecessary movement, and improve accuracy. The light source 5 is located directly above the reflector 6. The angle of the light can be adjusted through the reflector 6 to make the light evenly illuminate the target area and reduce shadow interference. By adjusting the angle of the reflector 6 with the knob, the doctor can change the light incident direction as needed to adapt to different surgical requirements. When using the device, the protective shell 7 and corresponding parts are adjusted in large positions through the microscope body 2. After placing the patient's head on the jaw support 4, the angle is adjusted finely according to the knob 8.

[0020] Furthermore, such as Figure 1 as well as Figure 2 As shown, the knob 8 has multiple raised scale blocks evenly distributed on it. The fixing ring 9 is fixed to the inner wall of the protective shell 7. Multiple planetary gears 11 are rotatably connected on the fixing ring 9. The knob 8 passes through the protective shell 7 and the fixing ring 9 and is fixed to the sun gear 10. The even distribution of the scale blocks can provide clear adjustment feedback, allowing doctors to adjust the angle of the reflector 6 more precisely to ensure that the direction of light illumination meets the needs of the surgery. The raised scale blocks increase the friction, so that even if the doctor's hands are wearing gloves or the surgical environment is slippery, the knob can be operated stably to avoid adjustment errors.

[0021] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0022] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A slit lamp illumination mechanism for an ophthalmic surgical microscope, characterized in that, include: The microscope body (2) has a base (1) at its bottom. The microscope body (2) is rotatably mounted on the base (1). A connecting rod (3) is fixedly connected to one side of the microscope body (2). A protective shell (7) is fixedly mounted on the top of the connecting rod (3). A reflector (6) is rotatably connected to the protective shell (7). A knob (8) is rotatably connected to one side of the protective shell (7). A sun gear (10) is fixedly connected to the sun gear (10) through the protective shell (7). Multiple planet gears (11) are meshed with the outside of the sun gear (10). 11) is externally meshed with a wheel rim (12), and a fixing ring (9) is provided on one side of the wheel rim (12). The fixing ring (9) is fixedly installed on the inner wall of the protective shell (7). The planetary gear (11) is rotatably connected to the fixing ring (9). A first bevel gear (13) is fixedly connected to the side of the wheel rim (12) away from the fixing ring (9). A second bevel gear (14) is meshed with one side of the first bevel gear (13). The second bevel gear (14) is rotatably connected to the inner wall of the protective shell (7). The top of the second bevel gear (14) is fixedly connected to the reflector (6).

2. The slit lamp illumination mechanism for an ophthalmic surgical microscope according to claim 1, characterized in that, A jaw support (4) is fixedly connected to the upper side of the base (1), and a light source (5) is fixedly installed on the upper part of the protective shell (7). The bottom of the light source (5) is located directly above the reflector (6).

3. The slit lamp illumination mechanism for an ophthalmic surgical microscope according to claim 1, characterized in that, The diameter of the sun gear (10) is smaller than the diameter of the planet gear (11).

4. The slit lamp illumination mechanism for an ophthalmic surgical microscope according to claim 1, characterized in that, The knob (8) has multiple raised scale blocks evenly distributed on it.

5. The slit lamp illumination mechanism for an ophthalmic surgical microscope according to claim 1, characterized in that, The protective shell (7) is fixedly connected to the bottom of the microscope body (2) via the connecting rod (3), and the protective shell (7) and the microscope body (2) rotate synchronously.

6. The slit lamp illumination mechanism for an ophthalmic surgical microscope according to claim 1, characterized in that, The fixing ring (9) is fixed to the inner wall of the protective shell (7), and the multiple planetary gears (11) are rotatably connected on the fixing ring (9). The knob (8) passes through the protective shell (7) and the fixing ring (9) and is fixed to the sun gear (10).

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