Fluorescence switching device for medical imaging equipment

Abstract

The utility model provides a fluorescence switching device for medical imaging equipment, which comprises a motor and a turntable body, the turntable body comprises a top plate, the motor is connected with the top plate, and a plurality of light filtering components are arranged in the circumferential direction of the top plate; the light filtering assembly comprises an excitation light filter support and a dichroscope support connected with the excitation light filter support, an excitation light filter is arranged on the excitation light filter support, a dichroscope is arranged on the dichroscope support, and the excitation light filter support is fixedly connected with the edge of the top plate; the excitation optical filter is located on one side of the dichroscope in the horizontal direction, and a reflection optical filter is arranged on the top plate. The structure of the light filtering assembly is greatly simplified, the size and the structural complexity of the light filtering assembly are greatly reduced, the weight of the light filtering assembly is effectively reduced, more light filtering modules can be installed on one rotary table body, and more than ten light filtering assemblies can be installed on one rotary table body at the same time. And the switching requirement of a large number of light filtering assemblies can be effectively met.

Description

A fluorescence switching device for medical imaging equipment Technical Field

[0001] This utility model relates to the fields of medical imaging and microscopic scientific research technology, and in particular to a fluorescence switching device for medical imaging equipment. Background Technology

[0002] Fluorescent labeling technology is frequently used in medical imaging and other microscopic research fields to label antibodies with fluorescent markers to locate tumor markers and pathogens (such as viruses and bacteria), thereby aiding in the accurate diagnosis of cancer and infectious diseases. A crucial component of fluorescent labeling technology is the fluorescence module, which mainly consists of a fluorescence filter box and a switching mechanism. Currently available fluorescence filter boxes contain an excitation filter, an emission filter, and a dichroic mirror. The entire fluorescence filter box is inserted into a slot in the switching mechanism, which then rotates to switch between different fluorescence filter boxes.

[0003] Currently available fluorescent modules suffer from the following drawbacks: Their complex filter box design and excessive weight and size limit the number of filters that can be installed simultaneously on the switching mechanism, making it difficult to meet the switching requirements of a dozen or more filters. Furthermore, due to the significant weight of traditional fluorescent filters, the switching mechanism relies on a combination of a motor and a reduction gear (such as a belt reducer) to increase output torque. This results in a reduction ratio between the filter switching speed and the motor's output speed, decreasing the switching speed. The presence of the reduction gear also increases the overall complexity and manufacturing cost of the mechanism. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies and provide a fluorescence switching device for medical imaging equipment.

[0005] The purpose of this utility model is achieved through the following technical solution: a fluorescence switching device for medical imaging equipment, comprising a motor and a turntable. The turntable includes a top plate, the motor is connected to the top plate, and a plurality of filter components are installed on the circumference of the top plate. The filter components include an excitation filter support and a dichroic mirror support connected to the excitation filter support. An excitation filter is disposed on the excitation filter support, and a dichroic mirror is disposed on the dichroic mirror support. The excitation filter support is fixedly connected to the edge of the top plate. The excitation filter is located on one side of the dichroic mirror in the horizontal direction, and a reflective filter is disposed on the top plate, with the reflective filter located directly above the dichroic mirror.

[0006] Preferably, the turntable body also includes an inner cylinder, with a top plate located at the upper end of the inner cylinder. Several partition plates are provided on the outer side of the inner cylinder, and installation compartments are formed between adjacent partition plates. The filter components are installed in the installation compartments.

[0007] Preferably, the partition plate is T-shaped.

[0008] Preferably, the excitation filter holder is connected to the top plate by a first screw. The excitation filter holder is provided with a first connecting hole, and the edge of the top plate is provided with a threaded hole corresponding to the first connecting hole. The first screw passes through the first connecting hole on the excitation filter holder and is connected to the threaded hole on the top plate.

[0009] Preferably, the dichroic mirror holder and the excitation filter holder are connected by a second screw. The excitation filter holder is provided with a second connecting hole, and the dichroic mirror holder is provided with a third connecting hole corresponding to the second connecting hole. The second screw passes through the second connecting hole on the excitation filter holder and is connected to the third connecting hole on the dichroic mirror holder.

[0010] Preferably, the excitation filter holder is provided with a limiting boss, and the upper end of the dichroic mirror holder is provided with a positioning surface, the positioning surface on the dichroic mirror holder contacting the limiting boss on the excitation filter holder.

[0011] Preferably, the dichroic mirror support is provided with a pressure strip, which is connected to the dichroic mirror support by a third screw, and the pressure strip presses the four corners of the dichroic mirror tightly.

[0012] Preferably, the motor is a servo motor.

[0013] Preferably, the excitation filter holder and the dichroic mirror holder are at a 45-degree angle.

[0014] Preferably, a light shield is also included, which is placed on the outside of the turntable body and has an upper light hole and a side light hole.

[0015] The beneficial effects of this invention are as follows: This invention greatly simplifies the structure of the filter assembly, significantly reducing its size and structural complexity, and effectively lowering its weight. This allows for the installation of a larger number of filter modules on a single turntable, with up to a dozen or more filter assemblies installed simultaneously, effectively meeting the switching needs of a large number of filter assemblies. Thanks to the lightweight design of the filter assembly, the motor is directly connected to the turntable, eliminating the intermediate reduction gear mechanism, thus simplifying the drive structure, resulting in faster switching speeds and improved work efficiency. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of this utility model.

[0017] Figure 2 is a schematic diagram of the structure of this utility model in one direction after the protective cover is removed.

[0018] Figure 3 is a structural schematic diagram of the present invention from another direction after the protective cover is removed.

[0019] Figure 4 is a schematic diagram of the filter assembly.

[0020] Figure 5 is a schematic diagram of the mounting substrate.

[0021] Figure 6 is a schematic diagram of the filter support plate.

[0022] In the diagram: 1. Motor, 2. Light shield, 3. Upper light hole, 4. Side light hole, 5. Top plate, 6. Filter assembly, 6-1. Excitation filter bracket, 6-1a. Limiting boss, 6-1b. Excitation filter, 6-1c. First connecting hole, 6-1d. Second connecting hole, 6-2. Dichroic mirror bracket, 6-2a. Positioning surface, 6-2b. Third connecting hole, 6-3. Dichroic mirror, 6-4. Pressure strip, 7. Divider plate, 8. Inner cylinder, 9. Reflective filter. Detailed Implementation

[0023] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0024] As shown in Figures 1 to 6, a fluorescence switching device for medical imaging equipment includes a motor 1 and a turntable. The turntable includes a top plate 5, and the motor 1 is connected to the top plate 5. Several filter components 6 are installed in the circumferential direction of the top plate 5. The filter components 6 include an excitation filter support 6-1 and a dichroic mirror support 6-2 connected to the excitation filter support 6-1. An excitation filter 6-1b is provided on the excitation filter support 6-1, and a dichroic mirror 6-3 is provided on the dichroic mirror support 6-2. The excitation filter support 6-1 is fixedly connected to the edge of the top plate 5. The excitation filter 6-1b is located on one side of the dichroic mirror 6-3 in the horizontal direction. A reflective filter 9 is provided on the top plate 5, and the reflective filter 9 is located directly above the dichroic mirror 6-3.

[0025] In this invention, the filter assembly 6 consists of an excitation filter bracket 6-1 and a dichroic mirror bracket 6-2 forming the main support. The excitation filter 6-1b and the dichroic mirror 6-3 are respectively mounted on the excitation filter bracket 6-1 and the dichroic mirror bracket 6-2. The reflective filter 9 is directly integrated and mounted on the top plate 5. The filter assembly 6 does not require a separate mounting structure for fixing the reflective filter 9, which greatly simplifies the structure of the filter assembly 6, significantly reducing its size and structural complexity. Furthermore, while maintaining structural strength, its weight is also effectively reduced, allowing for the installation of a larger number of filter modules on a single turntable. Up to a dozen or more filter assemblies 6 can be installed simultaneously on one turntable, effectively meeting the switching requirements of a large number of filter assemblies 6. Thanks to the lightweight design of the filter assembly 6, the motor 1 is directly connected to the turntable, eliminating the intermediate reduction transmission mechanism, simplifying the drive structure, and resulting in faster switching speeds and improved work efficiency.

[0026] The motor 1 used in this application is a servo motor 1. The servo motor 1 is used as the driving component in this application. The servo motor 1 operates with precision, adopts a 26-bit absolute encoder, and is subjected to a strong load. The ratio of the design weight to the inertia of the motor 1 is controlled at 1:7, and the switching repeatability error is ≤5μm.

[0027] The turntable also includes an inner cylinder 8, with a top plate 5 located at the upper end of the inner cylinder 8. Several partition plates 7 are arranged on the outer side of the inner cylinder 8, forming installation compartments between adjacent partition plates 7. Filter components 6 are installed in these installation compartments. The partition plates 7 effectively reduce interference between adjacent filter components 6.

[0028] In this embodiment, the partition plate 7 is T-shaped.

[0029] The excitation filter holder 6-1 is connected to the top plate 5 by a first screw. The excitation filter holder 6-1 is provided with a first connecting hole 6-1c. The edge of the top plate 5 is provided with a threaded hole corresponding to the first connecting hole 6-1c. The first screw passes through the first connecting hole 6-1c on the excitation filter holder 6-1 and is connected to the threaded hole on the top plate 5.

[0030] The dichroic mirror holder 6-2 and the excitation filter holder 6-1 are connected by a second screw. The excitation filter holder 6-1 has a second connecting hole 6-1d, and the dichroic mirror holder 6-2 has a third connecting hole 6-2b corresponding to the second connecting hole 6-1d. The second screw passes through the second connecting hole 6-1d on the excitation filter holder 6-1 and connects to the third connecting hole 6-2b on the dichroic mirror holder 6-2. The excitation filter holder 6-1 and the dichroic mirror holder 6-2 form a 45-degree angle.

[0031] Furthermore, the excitation filter holder 6-1 is provided with a limiting boss 6-1a, and the upper end of the dichroic mirror holder 6-2 is provided with a positioning surface 6-2a. The positioning surface 6-2a on the dichroic mirror holder 6-2 contacts the limiting boss 6-1a on the excitation filter holder 6-1. The provision of the limiting boss 6-1a increases the contact surface between the dichroic mirror holder 6-2 and the excitation filter holder 6-1, thereby improving the stability of the dichroic mirror holder 6-2 during installation.

[0032] A pressure strip 6-4 is provided on the dichroic mirror holder 6-2. The pressure strip 6-4 is connected to the dichroic mirror holder 6-2 by a third screw, and the pressure strip 6-4 presses down the four corners of the dichroic mirror 6-3. In this application, the dichroic mirror 6-3 is pressed and fixed by the pressure strip 6-4, which is simple and reliable in structure and has a good fixing effect on the dichroic mirror 6-3.

[0033] This utility model also includes a light shield 2, which is installed on the outside of the turntable body. The light shield 2 has an upper light hole 3 and a side light hole 4. The light shield 2 can block external stray light and prevent it from interfering with the normal operation of the filter module. The light shield 2 is connected and fixed to the motor 1 by screws, which can be easily installed and removed.

[0034] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A fluorescence switching device for medical imaging equipment, characterized in that, The device includes a motor and a turntable. The turntable includes a top plate, and the motor is connected to the top plate. Several filter components are installed on the circumference of the top plate. Each filter component includes an excitation filter holder and a dichroic mirror holder connected to the excitation filter holder. An excitation filter is mounted on the excitation filter holder, and a dichroic mirror is mounted on the dichroic mirror holder. The excitation filter holder is fixedly connected to the edge of the top plate. The excitation filter is located on one side of the dichroic mirror in the horizontal direction. A reflective filter is mounted on the top plate and is located directly above the dichroic mirror.

2. The fluorescent switching device for medical imaging equipment according to claim 1, wherein, The turntable also includes an inner cylinder, with a top plate located at the upper end of the inner cylinder. Several partition plates are provided on the outer side of the inner cylinder, and installation compartments are formed between adjacent partition plates. The filter components are installed in the installation compartments.

3. The fluorescence switching device for medical imaging equipment according to claim 2, wherein, The partition is T-shaped.

4. The fluorescent switching device for medical imaging equipment according to claim 1, wherein, The excitation filter holder is connected to the top plate by a first screw. The excitation filter holder is provided with a first connecting hole, and the edge of the top plate is provided with a threaded hole corresponding to the first connecting hole. The first screw passes through the first connecting hole on the excitation filter holder and is connected to the threaded hole on the top plate.

5. The fluorescent switching device for medical imaging equipment according to claim 1, wherein, The dichroic mirror holder and the excitation filter holder are connected by a second screw. The excitation filter holder is provided with a second connecting hole, and the dichroic mirror holder is provided with a third connecting hole corresponding to the second connecting hole. The second screw passes through the second connecting hole on the excitation filter holder and connects to the third connecting hole on the dichroic mirror holder.

6. The fluorescent switching device for medical imaging equipment according to claim 5, wherein, The excitation filter holder is provided with a limiting boss, and the upper end of the dichroic mirror holder is provided with a positioning surface, which contacts the limiting boss on the excitation filter holder.

7. The fluorescent switching device for medical imaging equipment according to claim 1, wherein, The dichroic mirror support is provided with a pressure strip, which is connected to the dichroic mirror support by a third screw, and the pressure strip presses the four corners of the dichroic mirror tightly.

8. A fluorescence switching device for medical imaging equipment according to claim 1, characterized in that, The motor is a servo motor.

9. The fluorescent switching device for medical imaging equipment according to claim 1, wherein, The excitation filter holder and the dichroic mirror holder are at a 45-degree angle.

10. A fluorescence switching device for medical imaging equipment according to claim 1, characterized in that, It also includes a light shield, which is placed on the outside of the turntable body and has an upper light hole and a side light hole.

Images