Operating microscope illumination adjusting device
The angle adjustment assembly, consisting of guide and transmission components, automatically adjusts the illumination area of the surgical microscope, solving the problem of low adjustment precision in traditional microscopes and improving surgical efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-17
- Publication Date
- 2026-03-20
AI Technical Summary
Traditional surgical microscopes have low-precision illumination systems that are inconvenient to operate, which affects surgical efficiency.
The angle adjustment assembly, consisting of a guide, a transmission, and a pre-tightening component, is driven by a drive unit to move the guide vertically. By utilizing the sliding contact between the guide ramp and the transmission component, high-precision automatic adjustment of the reflector group is achieved, improving the flexibility and accuracy of lighting adjustment.
It achieves high-precision automatic adjustment of the lighting area, reduces manual operation, and improves the efficiency and safety of microsurgery.
Smart Images
Figure CN224020064U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an illumination adjustment device for a surgical microscope. Background Technology
[0002] In microsurgery, surgical microscopes require an illumination system to ensure uniform brightness in the surgical field. Traditional surgical microscopes use fixed-angle mirrors, adjusting the illumination area by moving the entire light source assembly, or using simple knobs to directly adjust the tilt angle of the mirror. This results in low adjustment precision, inconvenient operation, and reduced surgical efficiency.
[0003] It should be noted that the above description of the background technology is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background technology section of this application. Utility Model Content
[0004] The purpose of this invention is to disclose an illumination adjustment device for a surgical microscope, which addresses many shortcomings of existing illumination systems, especially to improve the accuracy and flexibility of illumination adjustment.
[0005] To achieve the above objectives, this utility model provides an illumination adjustment device for a surgical microscope, comprising: an illumination component, an angle adjustment component, and a drive unit;
[0006] The lighting assembly includes: a reflector tube, a reflector group disposed within the reflector tube, and a rotating shaft disposed in the reflector group and rotatably connected to the reflector tube;
[0007] The angle adjustment assembly includes: a guide member controlled by the drive unit to move in the vertical direction, an angle adjustment block connected to the rotating shaft, a transmission member disposed at the end of the angle adjustment block away from the rotating shaft, and a preload member;
[0008] The guide member is configured with a guide ramp that forms a sliding contact with the transmission member. The preload member is used to drive the transmission member to maintain contact with the guide ramp during the adjustment process, so as to guide the transmission member to drive the adjustment block and the rotating shaft to rotate together along the axis of the rotating shaft.
[0009] As a further improvement of this utility model, the inclination direction of the guide slope forms an acute or obtuse angle with the normal of the vertical direction.
[0010] As a further improvement of this utility model, the rotating shaft passes through the reflector tube along the first direction, and one end of the rotating shaft that passes through the reflector tube is connected to the angle adjustment block.
[0011] As a further improvement of this utility model, the reflector assembly includes: a reflector base disposed within the reflector tube, and a reflector unit disposed on the reflector base.
[0012] As a further improvement of this utility model, the lighting assembly further includes: an elastic element sleeved on the outside of the rotating shaft;
[0013] The reflector mount and the reflector tube form a rotational contact with the sidewalls opposite each other along the first direction;
[0014] The elastic element is connected to the adjusting block and the reflector mount at both ends along its length.
[0015] As a further improvement of this utility model, the lighting assembly further includes: an elastic element sleeved on the outside of the rotating shaft;
[0016] The reflector mount and the reflector tube form a rotational contact with the sidewalls opposite each other along the first direction;
[0017] The elastic element is connected to the reflector mount and the reflector tube at its two ends along its length, respectively.
[0018] As a further improvement of this utility model, the side of the adjusting block away from the rotating shaft extends along the first direction to form a transmission rod;
[0019] The preload is configured as a tension spring, which is disposed on the reflector barrel along a second direction perpendicular to the first direction. The two ends of the tension spring along the second direction are respectively connected to the reflector barrel and the transmission rod to form an elastic force on the transmission rod.
[0020] As a further improvement of this utility model, the lighting assembly further includes: an lighting lens barrel, a first lens group, a variable aperture, a second lens group, a third lens group and the reflection unit arranged sequentially along the lighting optical axis, and an adjustment mechanism for adjusting the aperture size of the variable aperture.
[0021] As a further improvement of this utility model, the adjustment mechanism includes: a drive shaft, a first gear disposed on the drive shaft, and a second gear sleeved on the outside of the illumination lens barrel and rotatably connected to the illumination lens barrel; the second gear is connected to the lever included in the variable aperture.
[0022] As a further improvement of this utility model, the reflecting unit is configured as a plane reflecting mirror with a total reflection film coated on its surface.
[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows: When the driving unit drives the guiding member to move up and down in the vertical direction, through the sliding contact between the guiding inclined surface and the transmission member, the transmission member slides along the guiding inclined surface in a passive manner under the guidance of the guiding inclined surface, so that the transmission member generates a lateral displacement, thereby pushing the angle adjusting block and the rotating shaft to rotate around the axis of the rotating shaft. The rotating shaft drives the mirror group to rotate synchronously to adjust the reflection angle of the illumination beam, realizing high-precision automatic adjustment of the illumination area, avoiding the cumbersome operation of manually repeatedly adjusting the light source, improving the accuracy and flexibility of illumination adjustment, enabling the doctor to focus on the surgical operation throughout the process, and improving the efficiency of microsurgery. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 FIG. is an overall schematic diagram of the surgical microscope illumination adjustment device disclosed by the present utility model;
[0025] Figure 2 FIG. is a top view of the surgical microscope illumination adjustment device;
[0026] Figure 3 FIG. is Figure 2 a cross-sectional view taken along the C-C direction in FIG.;
[0027] Figure 4 FIG. is a partial schematic diagram of the contact between the transmission member and the guiding inclined surface, wherein the inclination direction of the guiding inclined surface forms an acute angle with the optical axis;
[0028] Figure 5 FIG. is a partial schematic diagram of the contact between the transmission member and the guiding inclined surface in another embodiment, wherein the inclination direction of the guiding inclined surface forms an obtuse angle with the optical axis;
[0029] Figure 6 FIG. is Figure 3 a cross-sectional view taken along the D-D direction of the rotating shaft and the mirror barrel in FIG., wherein the two ends of the elastic member are respectively connected to the angle adjusting block and the mirror base;
[0030] Figure 7 FIG. is a cross-sectional view of the rotating shaft and the mirror barrel in another embodiment, wherein the two ends of the elastic member are respectively connected to the mirror barrel and the mirror base. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0031] The present utility model will be described in detail below with reference to the embodiments shown in the drawings. However, it should be noted that these embodiments are not limitations of the present utility model. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.
[0032] [[ID=4%2]]Please refer to Figures 1 to 7 a specific embodiment of the surgical microscope illumination adjustment device disclosed.
[0033] Refer to Figures 1 to 3 As shown, in this embodiment, the surgical microscope illumination adjustment device 100 includes: an illumination component 30, an angle adjustment component 40, and a drive unit (not shown).
[0034] The lighting assembly 30 includes: a reflector tube 33, a reflector assembly 31 disposed within the reflector tube 33, and a rotating shaft 32 disposed in the reflector assembly 31; the angle adjustment assembly 40 includes: a drive unit (e.g., a voice coil motor) controlled to rotate in the vertical direction (i.e., Figure 1 The guide 41 moves in the direction indicated by the Z-axis, the adjusting block 42 is connected to the rotating shaft 32, the transmission member 43 is disposed at the end of the adjusting block 42 away from the rotating shaft 32, and the preload member 44 is configured to form a guiding inclined surface 411 that makes sliding contact with the transmission member 43. The preload member 44 is used to drive the transmission member 43 to maintain contact with the guiding inclined surface 411 during the adjustment process, so as to guide the transmission member 43 to drive the adjusting block 42 and the rotating shaft 32 to rotate together along the axis of the rotating shaft 32.
[0035] The mirror tube 33 provides a stable mounting reference for the mirror assembly 31. A rotating shaft 32 passes through the mirror tube 33 and connects the mirror mount 311 to the adjustment block 42, transmitting the rotational movement of the adjustment block 42 to the mirror mount 311. The mirror assembly 31 reflects the illumination beam to the surgical field. The mirror assembly 31 rotates with the rotating shaft 32 to change its tilt angle, thereby adjusting the position of the illumination spot. The preload member 44 applies a flexible contact pressure to the adjustment block 42 to ensure that the guide ramp 411 and the transmission member 43 remain in contact during adjustment.
[0036] When the guide member 41 is driven to move vertically up and down by the drive unit, it slides in contact with the transmission member 43 through the guide ramp 411. Under the guidance of the guide ramp 411, the transmission member 43 slides passively along the guide ramp 411, so that the transmission member 43 generates a lateral movement. Figure 1 The displacement (in the direction shown by the X-axis) drives the angle adjustment block 42 and the rotating shaft 32 to rotate around the axis Z3 of the rotating shaft 32. The rotating shaft 32 drives the reflector group 31 to rotate synchronously to adjust the reflection angle of the illumination beam, thereby achieving high-precision automatic adjustment of the illumination area. This avoids the tedious operation of repeatedly adjusting the light source manually, improves the accuracy and flexibility of illumination adjustment, and allows doctors to focus on the surgical operation throughout the process, thereby improving the efficiency and safety of microsurgery.
[0037] In some examples, the transmission element 43 is configured as a bearing and forms rolling contact with the guide ramp 411. When the guide element 41 moves vertically upward, it rolls along the guide ramp 411 with the transmission element 43 through the guide ramp 411. Guided by the guide ramp 411, the transmission element 43 rolls passively along the guide ramp 411, causing the transmission element 43 to move and roll laterally. This causes the angle adjustment block 42 and the rotating shaft 32 to rotate around the axis Z3 of the rotating shaft 32. The rotating shaft 32 drives the reflector assembly 31 to rotate synchronously to adjust the reflection angle of the illumination beam.
[0038] In some examples, the inclination direction of the guide ramp 411 is perpendicular to the normal in the vertical direction. Figure 4 (As shown by the dashed line Z1) forms as follows Figure 4 The acute angle α shown means that when the guide 41 moves upward in the vertical direction, the transmission member 43 moves along... Figure 4 The center arrow X1 indicates the direction of movement and rolling, causing the angle adjustment block 42 and the rotation axis 32 to rotate counterclockwise around the axis Z3 of the rotation axis 32, thereby adjusting the rotation angle of the reflector assembly 31. Alternatively, the tilt direction of the guide slope 411 and the normal Z1 of the vertical direction form a line as shown in the figure. Figure 5 The obtuse angle β shown means that when the guide 41 moves downward in the vertical direction, the transmission member 43 moves along... Figure 5 The center arrow X1 moves and rolls to drive the angle adjustment block 42 and the rotation axis 32 to rotate counterclockwise around the axis Z3 of the rotation axis 32, so as to adjust the rotation angle of the reflector group 31.
[0039] In some examples, the parameter Figures 1 to 3 As shown, the reflector assembly 31 includes: a reflector mount 311 disposed within the reflector tube 33, and a reflector unit 312 disposed on the reflector mount 311. The reflector mount 311 supports the reflector unit 312 and is linked to the angle adjustment block 42 via a rotating shaft 32 to achieve dynamic adjustment of the angle of the reflector unit 312. The reflector unit 312 is configured as a plane reflector with a total reflection film coated on its surface, used to reflect the illumination beam to the surgical field. The deflection angle of the reflector unit 312 determines the position of the illumination spot.
[0040] In some examples, the parameter Figure 1 and Figure 2 and Figure 6 As shown, the rotation axis 32 is along the first direction (i.e. Figure 1A rotating shaft 32 (in the direction indicated by the Y-axis) passes through the reflector tube 33, and one end of the rotating shaft 32 extends out of the reflector tube 33 and is connected to the adjusting block 42. The rotating shaft 32 passes through the reflector tube 33 and connects the reflector base 311 and the adjusting block 42, transmitting the rotational motion of the adjusting block 42 to the reflector base 311. The adjusting block 42 is used to convert the lateral linear displacement of the transmission member 43 into a rotation angle around the rotating shaft 32. When the guide member 41 moves vertically, the guide inclined surface 411 pushes the transmission member 43 to move laterally and roll. The transmission member 43, through lateral displacement, pushes the adjusting block 42 and the rotating shaft 32 to rotate around the axis Z3. The rotating shaft 32 drives the reflector base 311 and the reflecting unit 312 to rotate synchronously around the axis Z3, so as to deflect the reflected illumination light path and adjust the reflection angle of the illumination beam.
[0041] In some examples, the parameter Figure 6 As shown, the lighting assembly 30 further includes: an elastic element 34 (e.g., a spring) sleeved on the outside of the rotating shaft 32; a reflector mount 311 and a reflector tube 33 forming a rotational contact along opposite sidewalls in a first direction; and two ends of the elastic element 34 along its length direction respectively connected to the adjusting block 42 and the reflector mount 311. The reflector tube 33 has a limiting groove 332 forming a accommodating portion of the elastic element 34. The elastic element 34 is sleeved on the outside of the rotating shaft 32, with one end of the elastic element 34 along its length direction fixed to the groove wall 333 of the limiting groove 332, and the other end pressing against the adjusting block 42. During assembly, the elastic element 34 is compressed to store elastic potential energy, thereby continuously applying pressure along the direction of rotation to the adjusting block 42. Figure 6 The thrust in the direction indicated by the middle arrow Y1 ensures that the side wall 3111 of the reflector mount 311 is tightly fitted with the side wall 331 of the reflector tube 33, preventing the reflector mount 311 from shifting along the axis of the rotation shaft 32 during rotation, so as to avoid the illumination beam from deviating.
[0042] In some examples, the parameter Figure 7 As shown, the lighting assembly 30 further includes: an elastic element 34 (e.g., a spring) sleeved on the outside of the rotating shaft 32; a reflector base 311 and a reflector tube 33 forming rotational contact along opposite sidewalls in a first direction; and the elastic element 34 having its two ends connected to the reflector base 311 and the reflector tube 33 respectively along its length. The elastic element 34 is sleeved on the outside of the rotating shaft 32, with one end of its length fixed to the groove wall 333 of the limiting groove 332, and the other end pressing against the reflector base 311. During assembly, the elastic element 34 is compressed to store elastic potential energy, thereby continuously applying pressure along its length to the reflector base 311. Figure 7 The thrust in the direction indicated by the middle arrow Y1 ensures that the side wall 3111 of the reflector mount 311 is tightly fitted with the side wall 331 of the reflector tube 33, preventing the reflector mount 311 from shifting along the axis of the rotation shaft 32 during rotation, so as to avoid the illumination beam from deviating.
[0043] In some examples, the parameter Figures 1 to 3 As shown, the side of the adjusting block 42 away from the rotating shaft 32 extends along the first direction to form a transmission rod 45; the preload 44 is configured as a tension spring, which extends along a second direction perpendicular to the first direction (i.e., Figure 1 The spring (in the direction shown by the X-axis) is positioned on the reflector cylinder 33. Both ends of the spring along the second direction are connected to the reflector cylinder 33 and the transmission rod 45 respectively, forming an elastic force on the transmission rod 45. A connector 334 is provided at the top of the reflector cylinder 33. During assembly, the spring is stretched to store elastic potential energy. The tension of the spring pulls the transmission rod 45, thereby applying a certain flexible contact pressure to the adjusting block 42. This ensures that the guide slope 411 and the transmission component 43 remain in contact during adjustment, eliminating mechanical gaps between the guide slope 411 and the transmission component 43 and reducing adjustment errors.
[0044] In some examples, the parameter Figures 1 to 3 As shown, the lighting assembly 30 also includes: an lighting lens 35, along the lighting optical axis (i.e., Figure 3 A first lens group 361, a variable aperture 37, a second lens group 362, a third lens group 363, and a reflection unit 312, along with an adjustment mechanism 39, are arranged sequentially in the direction indicated by the central axis Z2 (with the extension direction of the illumination optical axis perpendicular to the vertical direction). The adjustment mechanism 39 is used to adjust the aperture size of the variable aperture 37. The first lens group 361 is used for initial collection and collimation of the illumination beam. The variable aperture 37 is used to control the amount of light transmitted through the illumination beam. The second lens group 362 and the third lens group 363 further shape and optimize the beam. The reflection unit 312 is used to reflect the illumination beam to the surgical field of view. The aperture size of the variable aperture 37 is adjusted by adjusting the adjustment mechanism 39 to adjust the amount of light transmitted. The bottom of the illumination tube 35 is also provided with a dustproof lens 364 located below the reflection unit 312. The dustproof lens 364 is exemplarily made of high-transmittance quartz glass to block contaminants such as blood and tissue fluid that may splash during surgery and to prevent dust and other small particles from entering the illumination tube 35.
[0045] In some examples, the first lens group 361, the second lens group 362, and the third lens group 363 work together to shape and transmit the illumination beam, ensuring uniform illumination of the surgical field. The specific optical parameters of the first lens group 361, the second lens group 362, and the third lens group 363 are based on conventional optical design according to actual illumination requirements, and will not be elaborated here.
[0046] In some examples, the parameter Figures 1 to 3As shown, the adjustment mechanism 39 includes: a drive shaft 391, a first gear 392 disposed on the drive shaft 391, and a second gear 393 sleeved on the outside of the illumination lens barrel 35 and rotatably connected to the illumination lens barrel 35; the second gear 393 is connected to a lever 371 included in the variable aperture 37. The drive shaft 391 is connected to an external knob (not shown), the first gear 392 is fixed on the drive shaft 391, the second gear 393 meshes with the first gear 392 and can rotate around the illumination lens barrel 35, and the lever 371 is connected to the blades (not shown) of the variable aperture 37. The knob can be rotated automatically or manually by an external drive device (not shown) to drive the drive shaft 391 to rotate, thereby driving the first gear 392 to rotate. The first gear 392 drives the second gear 393 to rotate, and the second gear 393 drives the lever 371 to rotate synchronously, so as to control the opening and closing of the blades of the variable aperture 37 through the lever 371, thereby changing the size of the aperture to adjust the diameter and brightness of the illumination beam, and thus adjusting the size of the illumination spot.
[0047] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementation methods or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.
[0048] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0049] 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 surgical microscope illumination adjustment device, characterized in that, include: Lighting components, angle adjustment components, and drive units; The lighting assembly includes: a reflector tube, a reflector group disposed within the reflector tube, and a rotating shaft disposed in the reflector group and rotatably connected to the reflector tube; The angle adjustment assembly includes: a guide member controlled by the drive unit to move in the vertical direction, an angle adjustment block connected to the rotating shaft, a transmission member disposed at the end of the angle adjustment block away from the rotating shaft, and a preload member; The guide member is configured with a guide ramp that forms a sliding contact with the transmission member. The preload member is used to drive the transmission member to maintain contact with the guide ramp during the adjustment process, so as to guide the transmission member to drive the adjustment block and the rotating shaft to rotate together along the axis of the rotating shaft.
2. The surgical microscope illumination adjustment device according to claim 1, characterized in that, The inclination direction of the guide ramp forms an acute or obtuse angle with the normal to the vertical direction.
3. The surgical microscope illumination adjustment device according to claim 1, characterized in that, The rotating shaft passes through the reflector tube along a first direction, and one end of the rotating shaft that exits the reflector tube is connected to the angle adjustment block.
4. The surgical microscope illumination adjustment device according to claim 1, characterized in that, The reflector assembly includes: a reflector mount disposed within the reflector tube, and a reflector unit disposed on the reflector mount.
5. The surgical microscope illumination adjustment device according to claim 4, characterized in that, The lighting assembly further includes: an elastic element sleeved on the outside of the rotating shaft; The reflector mount and the reflector tube form a rotational contact with the sidewalls opposite each other along the first direction; The elastic element is connected to the adjusting block and the reflector mount at both ends along its length.
6. The surgical microscope illumination adjustment device according to claim 4, characterized in that, The lighting assembly further includes: an elastic element sleeved on the outside of the rotating shaft; The reflector mount and the reflector tube form a rotational contact with the sidewalls opposite each other along the first direction; The elastic element is connected to the reflector mount and the reflector tube at its two ends along its length, respectively.
7. The surgical microscope illumination adjustment device according to claim 4, characterized in that, The side of the angle adjustment block away from the rotation axis extends along the first direction to form a transmission rod; The preload is configured as a tension spring, which is disposed on the reflector barrel along a second direction perpendicular to the first direction. The two ends of the tension spring along the second direction are respectively connected to the reflector barrel and the transmission rod to form an elastic force on the transmission rod.
8. The surgical microscope illumination adjustment device according to claim 4, characterized in that, The lighting assembly further includes: an lighting barrel, a first lens group, a variable aperture, a second lens group, a third lens group, and the reflection unit arranged sequentially along the lighting optical axis, and an adjustment mechanism for adjusting the aperture size of the variable aperture.
9. The surgical microscope illumination adjustment device according to claim 8, characterized in that, The adjustment mechanism includes: a drive shaft, a first gear disposed on the drive shaft, and a second gear sleeved on the outside of the illumination lens barrel and rotatably connected to the illumination lens barrel; the second gear is connected to a lever included in the variable aperture.
10. The surgical microscope illumination adjustment device according to claim 4, characterized in that, The reflecting unit is configured as a plane mirror with a total reflection coating on its surface.