A neurosurgical digital microscope

Abstract

This invention provides a digital neurosurgical microscope that, through a gas delivery mechanism and a spiral flow channel, generates a spiral airflow into the second extension tube. This effectively removes dust from the optical path and dissipates heat from the light source at the top of the inner wall of the second extension tube. After the spiral airflow is discharged, the gas discharged from several exhaust holes at the bottom of the lens mount forms an airflow barrier, preventing surrounding dust, debris, and other contaminants from contacting the lens surface, thereby reducing the possibility of lens contamination and ensuring image clarity. Furthermore, the spiral airflow, heated by the light source, reaches a temperature higher than room temperature, forming a warm airflow layer on the lens surface. When the ambient humidity is high, this reduces the chance of the lens directly contacting cold air, effectively preventing lens condensation.

Description

Technical Field

[0001] This invention relates to the field of digital microscopy, and particularly to a neurosurgical digital microscope. Background Technology

[0002] In the field of neurosurgery, the application of surgical microscopes represents a revolutionary advancement, marking the transition of neurosurgery from the traditional era of visual manipulation to the modern era of microscopic manipulation. This transformation has greatly improved the precision and safety of surgery, providing neurosurgeons with a clearer and more detailed surgical field of vision. Chinese invention patent CN101930153B discloses an external microscope head device. This invention places the light source between the adapter and the microscope head to emit light outwards through the microscope head. The aforementioned prior art suffers from at least the following problems:

[0003] 1. The light source is placed at the top of the optical path, which makes the bottom of the optical path cool while the top is hot due to the light source. This causes thermal convection, which makes the air density distribution in the optical path uneven. When the light passes through the uneven air, it will be refracted and scattered, which will change the direction of light propagation. This will cause the focal point of the image to shift, making the image blurry and the details difficult to distinguish.

[0004] 2. Lack of heat dissipation mechanism for the light source. The light source generates heat when it is working. If it is not dissipated in time, the temperature will be too high, which will lead to a decrease in the luminous efficiency of the light source and light decay.

[0005] 3. Lack of lens protection allows dust, debris, and other contaminants to come into contact with the lens surface, affecting image clarity. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the aforementioned problems in the prior art, the present invention provides a digital microscope for neurosurgery.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] A neurosurgical digital microscope includes an outer shell, a digital camera, a lens ring, a first lens, a light source, a first extension tube, a second extension tube, an shaftless propeller blade, an air supply mechanism, a lens mount, and a second lens.

[0011] The digital camera is installed inside the housing, and the lens of the digital camera is fixedly connected to the first extension tube.

[0012] The second extension tube is installed at the bottom of the first extension tube, and the second extension tube has an installation groove at one end near the top of the first extension tube.

[0013] The first lens is installed inside the lens ring and is mounted in the mounting groove via the lens ring;

[0014] The light source has a ring-shaped structure, is installed in the mounting groove, and is positioned below the first lens;

[0015] The lens mount is provided with an annular convex lens mount, which is coaxially arranged with the lens mount. The surface of the annular convex lens mount is provided with a plurality of lens holes arranged in a circumferential array with the center as the center point. Under the drive of the rotating mechanism, the lens holes of the lens mount coincide one by one with the lens opening at the bottom of the second extension tube.

[0016] The second lens is installed inside the lens aperture;

[0017] The shaftless propeller blade is installed inside the second extension tube. The shaftless propeller blade and the inner wall of the second extension tube form a spiral flow channel. The bottom of the spiral flow channel is connected to the air supply mechanism through an air inlet pipe. The top of the spiral flow channel is connected to the lens mount through an exhaust pipe. The lens mount has an exhaust chamber that communicates with the exhaust pipe, and the bottom of the exhaust chamber is provided with several exhaust holes.

[0018] Preferably, the diameter of the central channel inside the shaftless propeller blade, the inner diameter of the light source, the inner diameter of the lens ring, and the inner diameter of the first extension tube are all the same.

[0019] Preferably, the exhaust pipe is provided with a filter mechanism for filtering dust and impurities.

[0020] Preferably, the filtration mechanism includes a filter box and a filter membrane disposed within the filter box.

[0021] Preferably, a connecting pipe communicating with the exhaust chamber is provided at the center of the surface of the lens mount, and one end of the connecting pipe is connected to the exhaust pipe via a rotary joint.

[0022] Preferably, the gas delivery mechanism includes a cylinder, a piston rod, a connecting plate, a cam, a motor, a spring, and a fixing plate;

[0023] The fixing plate is mounted on the surface of the connecting plate;

[0024] The piston rod is installed inside the cylinder, and one end of the piston rod passes through the fixing plate. The piston rod has an annular protrusion near the top end.

[0025] The spring is sleeved on the piston rod, one end of the spring is connected to the annular protrusion, and the other end of the spring is connected to the fixing plate;

[0026] The cam is connected to the motor and is positioned directly above the piston rod. When the cam rotates, it drives the piston rod to move up and down reciprocally.

[0027] The cylinder has a filter screen at its air inlet and an air supply pipe at its air outlet. Both the air inlet and outlet of the cylinder are equipped with one-way valves.

[0028] Preferably, the gas delivery mechanism uses a centrifugal fan.

[0029] Preferably, the rotating mechanism includes a worm gear, a worm, a motor, and a reducer;

[0030] The lens mount is mounted on the worm gear;

[0031] The worm gear meshes with the worm wheel;

[0032] The motor is connected to the worm gear via a speed reducer.

[0033] Preferably, the outer casing is mounted on a robotic arm, the robotic arm is mounted on a mobile worktable, and the mobile worktable is equipped with a display screen, which is connected to the digital camera.

[0034] (III) Beneficial Effects

[0035] The beneficial effects of this invention are as follows: the gas delivery mechanism, in conjunction with the spiral flow channel, can generate a spiral airflow into the interior of the second extension cylinder, and this spiral airflow has the following effects:

[0036] 1. When the spiral airflow rotates inside the second extension tube, it generates centrifugal force. Due to their small mass, the dust particles are thrown towards the pipe wall under the action of centrifugal force. As the airflow continues, the dust particles will move along the pipe wall to one end of the pipe and then be discharged.

[0037] 2. When the spiral airflow is discharged from the second extension tube, it can dissipate heat from the light source at the top of the inner wall of the second extension tube;

[0038] 3. After the spiral airflow is discharged, the gas discharged from several exhaust holes at the bottom of the lens mount forms an airflow barrier, preventing surrounding dust, debris and other contaminants from contacting the lens surface, thereby reducing the possibility of lens contamination and ensuring image clarity.

[0039] 4. After being heated by the light source, the spiral airflow reaches a temperature higher than room temperature, forming a warm airflow layer on the lens surface. When the ambient humidity is high, this reduces the chance of the lens coming into direct contact with cold air, thus effectively preventing condensation on the lens. Attached Figure Description

[0040] Figure 1 A schematic diagram of the structure of a neurosurgical digital microscope Figure 1 ;

[0041] Figure 2 A schematic diagram of the structure of a neurosurgical digital microscope Figure 2 ;

[0042] Figure 3 This is a schematic diagram of the internal structure of the second extension tube;

[0043] Figure 4 This is a schematic diagram of the gas transmission mechanism;

[0044] Figure 5 This is a schematic diagram of the combined structure of the robotic arm, the mobile worktable, and the display screen.

[0045] Explanation of reference numerals in the attached figures

[0046] 1. Digital camera;

[0047] 2. First extension tube;

[0048] 3. Lens ring;

[0049] 4. First lens;

[0050] 5. Light source;

[0051] 6. Second extension tube; 61. Mounting slot; 62. Air inlet pipe; 63. Exhaust pipe;

[0052] 7. Gas transmission mechanism;

[0053] 71. Connecting plate; 72. Motor; 73. Cam; 74. Piston rod; 75. Fixing plate; 76. Spring; 77. Cylinder;

[0054] 8. Shaftless propeller blades;

[0055] 9. Filtration mechanism;

[0056] 10. Lens mount;

[0057] 11. Circular convex lens mount;

[0058] 12. Worm gear;

[0059] 13. Worm gear;

[0060] 14. Outer shell;

[0061] 15. Mobile workbench;

[0062] 16. Robotic arm;

[0063] 17. Display screen. Detailed Implementation

[0064] To better explain and facilitate understanding of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0065] Please refer to Figures 1 to 3 The first embodiment of the present invention:

[0066] A neurosurgical digital microscope includes an outer shell 14, a digital camera 1, a lens ring 3, a first lens 4, a light source 5, a first extension tube 2, a second extension tube 6, an shaftless propeller blade 8, an air supply mechanism 7, a lens mount 10, and a second lens.

[0067] The digital camera 1 is installed inside the housing 14, and the lens of the digital camera 1 is fixedly connected to the first extension tube 2;

[0068] The bottom of the first extension tube 2 is equipped with a second extension tube 6, and the second extension tube 6 has an installation groove 61 at one end near the top of the first extension tube 2.

[0069] The first lens 4 is installed inside the lens ring 3 and is installed in the mounting groove 61 through the lens ring 3;

[0070] The light source 5 has a ring structure, is installed in the mounting groove 61, and is located below the first lens 4;

[0071] The lens mount 10 is provided with an annular convex lens mount 11. The annular convex lens mount 11 is coaxially arranged with the lens mount 10, and the surface of the annular convex lens mount 11 is arranged with multiple lens holes in a circular array with the center as the center point. Under the drive of the rotating mechanism, the lens holes of the lens mount 10 coincide with the lens opening at the bottom of the second extension tube 6 one by one.

[0072] The second lens is installed inside the lens hole;

[0073] The shaftless propeller blade 8 is installed inside the second extension tube 6. The shaftless propeller blade 8 and the inner wall of the second extension tube 6 form a spiral flow channel. The bottom of the spiral flow channel is connected to the air supply mechanism 7 through the air inlet pipe 62. The top of the spiral flow channel is connected to the lens mount 10 through the exhaust pipe 63. The lens mount 10 has an exhaust chamber that communicates with the exhaust pipe 63, and several exhaust holes are arranged at the bottom of the exhaust chamber.

[0074] In use, the gas delivery mechanism 7 introduces gas into the spiral flow channel through the air inlet pipe 62. Guided by the shape of the spiral flow channel, the gas flows along the path defined by the curved surface of the propeller blades and the inner wall of the pipe, thus forming a spiral airflow. When the spiral airflow rotates inside the second extension cylinder 6, it generates centrifugal force. Due to their small mass, dust particles are thrown towards the pipe wall under the action of centrifugal force. With the continuous action of the airflow, the dust particles move along the pipe wall towards one end of the pipe and are then discharged, reducing the distribution of dust in the optical path and reducing the impact of dust on the optical path. Furthermore, when the spiral airflow flows upward, it can reach the top of the inner wall of the second extension cylinder 6. The light source 5 in the lens mount 10 dissipates heat, and the heat generated by the light source 5 is discharged through the exhaust pipe 63. The exhaust pipe 63 delivers air into the exhaust chamber and discharges it through the exhaust holes. The exhaust gas discharged from the several exhaust holes arrayed at the bottom of the lens mount 10 forms an airflow barrier, preventing dust, debris and other contaminants from contacting the lens surface, thereby reducing the possibility of lens contamination and ensuring image clarity. The exhaust gas is heated by the light source 5, and its temperature is higher than room temperature, which can form a warm airflow layer on the lens surface. When the ambient humidity is high, it can reduce the chance of the lens coming into direct contact with cold air, thereby effectively preventing lens condensation.

[0075] The diameters of the central channel inside the shaftless propeller blade 8, the inner diameters of the light source 5, the inner diameters of the lens ring 3, and the inner diameter of the first extension tube 2 are all the same, ensuring that the shaftless propeller blade 8, the lens ring 3, and the light source 5 do not obstruct the shooting of the digital camera 1.

[0076] The exhaust pipe 63 is equipped with a filter mechanism 9 for filtering dust and impurities. The filter mechanism 9 includes a filter box and a filter membrane installed inside the filter box.

[0077] When in use, the filter membrane inside the filter box can remove dust from the gas discharged from the spiral channel, preventing dust or impurities from adhering to the lens surface after being discharged through the exhaust port.

[0078] The lens mount 10 has a connecting pipe at the center of its surface that communicates with the exhaust chamber, and one end of the connecting pipe is connected to the exhaust pipe 63 via a rotary joint.

[0079] refer to Figure 4 The second embodiment of the present invention:

[0080] Based on the above embodiment 1, the gas supply mechanism 7 includes a cylinder 77, a piston rod 74, a connecting plate 71, a cam 73, a motor 72, a spring 76, and a fixing plate 75. The fixing plate 75 is installed on the surface of the connecting plate 71. The piston rod 74 is installed inside the cylinder 77, and one end of the piston rod 74 passes through the fixing plate 75. The piston rod 74 has an annular protrusion near the top end. The spring 76 is sleeved on the piston rod 74. One end of the spring 76 is connected to the annular protrusion, and the other end of the spring 76 is connected to the fixing plate 75. The cam 73 is connected to the motor 72, and the cam 73 is located directly above the piston rod 74. When the cam 73 rotates, it drives the piston rod 74 to move up and down reciprocally. The air inlet of the cylinder 77 is provided with a filter screen, and the air outlet of the cylinder 77 is connected to a gas supply pipe. One-way valves are provided at both the air inlet and the air outlet of the cylinder 77.

[0081] In use, the motor 72 drives the cam 73 to rotate. Under the action of the spring 76, the piston rod 74 moves up and down continuously in the cylinder 77, continuously pressurizing the gas in the cylinder 77 and delivering it into the spiral flow channel. This embodiment can provide filtered airflow with a high pressure value, which improves the dust removal effect in the optical path and the heat dissipation effect on the light source 5.

[0082] Third embodiment of the present invention:

[0083] Based on the above embodiment 1, the gas delivery mechanism 7 adopts a centrifugal fan, which can continuously supply airflow into the spiral channel, so that the exhaust gas can form an uninterrupted air curtain at the lens.

[0084] Fourth embodiment of the present invention:

[0085] Based on the above embodiments, the rotating mechanism includes a worm gear 12, a worm 13, a motor, and a reducer;

[0086] Lens mount 10 is mounted on worm gear 12;

[0087] The worm gear 13 meshes with the worm wheel 12;

[0088] The motor is connected to the worm gear 13 via a reducer;

[0089] In use, the motor drives the worm gear 13 to rotate through the reducer, and the worm gear 13 drives the worm wheel 12 to rotate, thereby realizing the switching of the lens hole on the lens mount 10.

[0090] It should be noted that the bottom of the second extension tube 6 is recessed with a notch that matches the annular protruding lens seat 11. When the lens seat 10 rotates, each lens hole can correspond to the second extension tube 6 one by one.

[0091] refer to Figure 5 Fourth embodiment of the present invention:

[0092] Based on the above embodiment, the outer shell 14 is mounted on the robotic arm 16, the robotic arm 16 is mounted on the mobile worktable 15, and the mobile worktable 15 is equipped with a display screen 17, which is connected to the digital camera 1.

[0093] In use, the position of the digital camera 1 is adjusted by the robotic arm 16, and the imaging information of the digital microscope is displayed on the display screen 17, thereby assisting in neurosurgical operations.

[0094] The above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention's specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

[0095] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A digital neurosurgical microscope, characterized in that, It includes an outer casing (14), a digital camera (1), a lens ring (3), a first lens (4), a light source (5), a first extension tube (2), a second extension tube (6), a shaftless propeller blade (8), an air supply mechanism (7), a lens mount (10), and a second lens; The digital camera (1) is installed inside the housing (14), and the lens of the digital camera (1) is fixedly connected to the first extension tube (2). The bottom of the first extension tube (2) is equipped with the second extension tube (6), and the second extension tube (6) has an installation groove (61) at one end near the top of the first extension tube (2). The first lens (4) is installed inside the lens ring (3) and is installed in the mounting groove (61) through the lens ring (3). The light source (5) has a ring structure, is installed in the mounting groove (61), and is located below the first lens (4); The lens mount (10) is provided with an annular convex lens mount (11), which is coaxially arranged with the lens mount (10). The surface of the annular convex lens mount (11) is arranged with multiple lens holes in a circular array with the center as the center point. Under the drive of the rotating mechanism, the lens holes of the lens mount (10) coincide with the lens opening at the bottom of the second extension tube (6) one by one. The second lens is installed inside the lens aperture; The shaftless propeller blade (8) is installed inside the second extension cylinder (6). The shaftless propeller blade (8) and the inner wall of the second extension cylinder (6) form a spiral flow channel. The bottom of the spiral flow channel is connected to the air supply mechanism (7) through the air inlet pipe (62). The top of the spiral flow channel is connected to the lens mount (10) through the exhaust pipe (63). The lens mount (10) has an exhaust chamber that communicates with the exhaust pipe (63), and the bottom of the exhaust chamber is provided with several exhaust holes.

2. The neurosurgical digital microscope according to claim 1, characterized in that, The diameter of the central channel inside the shaftless propeller blade (8), the inner diameter of the light source (5), the inner diameter of the lens ring (3), and the inner diameter of the first extension tube (2) are all the same.

3. A neurosurgical digital microscope according to claim 1, characterized in that, The exhaust pipe (63) is provided with a filter mechanism (9) for filtering dust and impurities.

4. A neurosurgical digital microscope according to claim 3, characterized in that, The filtration mechanism (9) includes a filter box and a filter membrane disposed within the filter box.

5. A neurosurgical digital microscope according to claim 1, characterized in that, A connecting pipe communicating with the exhaust chamber is provided at the center of the surface of the lens mount (10), and one end of the connecting pipe is connected to the exhaust pipe (63) through a rotary joint.

6. A neurosurgical digital microscope according to claim 1, characterized in that, The gas delivery mechanism (7) includes a cylinder (77), a piston rod (74), a connecting plate (71), a cam (73), a motor (72), a spring (76), and a fixing plate (75); The fixing plate (75) is mounted on the surface of the connecting plate (71); The piston rod (74) is installed inside the cylinder (77), and one end of the piston rod (74) extends upward through the fixing plate (75). The piston rod (74) has an annular protrusion near the top end of its body. The spring (76) is sleeved on the piston rod (74), one end of the spring (76) is connected to the annular protrusion, and the other end of the spring (76) is connected to the fixing plate (75). The cam (73) is connected to the motor (72), and the cam (73) is located directly above the piston rod (74). When the cam (73) rotates, it drives the piston rod (74) to move up and down reciprocally. The cylinder (77) has a filter screen at its air inlet and the air outlet of the cylinder (77) is connected to the air supply pipe. Both the air inlet and outlet of the cylinder (77) are equipped with one-way valves.

7. A neurosurgical digital microscope according to claim 1, characterized in that, The gas delivery mechanism (7) uses a centrifugal fan.

8. A neurosurgical digital microscope according to claim 1, characterized in that, The rotating mechanism includes a worm gear (12), a worm (13), a motor, and a reducer; The lens mount (10) is mounted on the worm gear (12); The worm (13) meshes with the worm wheel (12); The motor is connected to the worm gear (13) via a speed reducer.

9. A neurosurgical digital microscope according to claim 1, characterized in that, The outer casing (14) is mounted on a robotic arm (16), the robotic arm (16) is mounted on a mobile worktable (15), and the mobile worktable (15) is equipped with a display screen (17), the display screen (17) being connected to the digital camera (1).

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