阅读说明：本技术 一种医用显微镜 (Medical microscope ) 是由 周晓峰 杨晓光 徐久麒 王吉龙 周伟忠 于 2021-08-09 设计创作，主要内容包括：本发明涉及一种医用显微镜,包括壳体、观察单元、照明单元,观察单元包括设置在观察光路上的大物镜；照明单元包括第一照明单元、第二照明单元,第一照明单元包括第一光源,第二照明单元包括第二光源,第一照明单元、第二照明单元均设置在壳体内,并分别位于大物镜的两侧；第一照明单元还包括用于调节第一光源射出光线角度的第一调节组件,和/或第二照明单元还包括用于调节第二光源射出光线角度的第二调节组件。本发明可提供充足照明,成本低,寿命长,功耗小；内置装置小型轻量,结构紧凑；内部机构简单,光路不复杂,内部空间占用小；亮度调节多样化,叠加准确。(The invention relates to a medical microscope, which comprises a shell, an observation unit and an illumination unit, wherein the observation unit comprises a large objective lens arranged on an observation light path; the illumination unit comprises a first illumination unit and a second illumination unit, the first illumination unit comprises a first light source, the second illumination unit comprises a second light source, and the first illumination unit and the second illumination unit are both arranged in the shell and are respectively positioned on two sides of the large objective lens; the first lighting unit further comprises a first adjusting component used for adjusting the angle of light rays emitted by the first light source, and/or the second lighting unit further comprises a second adjusting component used for adjusting the angle of light rays emitted by the second light source. The invention can provide sufficient illumination, and has low cost, long service life and low power consumption; the built-in device is small, light and compact in structure; the internal mechanism is simple, the light path is not complex, and the internal space is small; the brightness adjustment is diversified and the superposition is accurate.)

1. A medical microscope comprises a shell, an observation unit and an illumination unit, wherein the observation unit and the illumination unit are arranged in the shell; the illumination unit comprises a first illumination unit and a second illumination unit, the first illumination unit comprises a first light source arranged on a first illumination light path, the second illumination unit comprises a second light source arranged on a second illumination light path, and the illumination unit is characterized in that: the first lighting unit and the second lighting unit are arranged in the shell and are respectively positioned at two sides of the large objective lens; the first lighting unit further comprises a first adjusting component which is arranged on the first lighting light path and used for adjusting the angle of light emitted by the first light source, and/or the second lighting unit further comprises a second adjusting component which is arranged on the second lighting light path and used for adjusting the angle of light emitted by the second light source.

2. The medical microscope of claim 1, wherein: the light emitted by the first light source is emitted out of the shell through the large objective lens.

3. The medical microscope of claim 1 or 2, wherein: the shell is provided with a light source emergent hole, and the light emitted by the second light source is emitted out of the shell through the light source emergent hole.

4. The medical microscope of claim 1 or 2, wherein: the light emitted by the second light source is emitted out of the shell through the large objective lens.

5. The medical microscope of claim 1, wherein: an included angle which is larger than 0 degree and smaller than 90 degrees is formed between the central axis of the light emitted by the second light source and the central axis of the large objective lens.

6. The medical microscope of claim 1, wherein: the first adjusting component comprises a reflector, the reflector is rotatably arranged, and light emitted by the first light source is emitted after being reflected by the reflector.

7. The medical microscope of claim 6, wherein: the large objective lens comprises a fixed part and a movable part, wherein the movable part can move in the vertical direction of the shell and drives the reflector to rotate when the movable part moves.

8. The medical microscope of claim 7, wherein: the objective lens group comprises a movably arranged objective lens seat and a rolling piece connected to the objective lens seat, and the moving part is arranged on the objective lens seat; first adjusting part still include the speculum seat of rotatable setting, the speculum setting be in the speculum seat on, the speculum seat have a rolling surface, the rolling surface relative the upper and lower direction slope of casing set up, the speculum seat relative the another side of rolling surface on be connected with and give the speculum seat towards the elastic component of rolling surface one side elastic force, the rolling component on the objective seat support and support the rolling surface of speculum seat on.

9. The medical microscope of claim 7, wherein: the second adjusting component comprises a projection mirror which can move on a plane vertical to the central axis of the light emitted by the second light source, and the light emitted by the second light source is emitted through the projection mirror.

10. The medical microscope of claim 9, wherein: the light emitted by the second light source directly exits the shell without being reflected.

11. The medical microscope of claim 9, wherein: the second adjusting component also comprises a driving source and a guide piece in transmission connection with the driving source, and the projection mirror is arranged on the guide piece.

12. The medical microscope of claim 11, wherein: the second adjusting part also comprises a transmission part, the transmission part comprises a gear sleeved at the output end of the driving source and a rack meshed with the gear, and the rack is arranged on the guide piece.

13. The medical microscope of claim 11, wherein: the second adjusting component also comprises a limiting part arranged at the movement limit position of the guide part.

14. The medical microscope of claim 9, wherein: the moving part can move in the vertical direction of the shell, and when the moving part moves, the projection mirror moves synchronously.

15. The medical microscope of claim 14, wherein: the microscope also comprises a first driving motor for driving the moving part to move, and the first driving motor is provided with an encoder; the second adjusting component also comprises a second driving motor for driving the projection mirror to move, and the encoder is in communication connection with the second driving motor.

16. The medical microscope of claim 1, wherein: the first illumination unit is located at the rear side of the large objective lens, and the second illumination unit is located at the front side of the large objective lens.

17. The medical microscope of claim 1, wherein: the first lighting unit further comprises a filter component arranged on the first lighting light path, the filter component comprises one or more filters, and the filters can be cut into or cut out of the first lighting light path.

18. The medical microscope of claim 1, wherein: the first light source and/or the second light source are LED lamps.

19. The medical microscope of claim 1, wherein: the medical microscope comprises an operation microscope.

Technical Field

The invention relates to the field of medical instruments, in particular to a medical microscope.

Background

In the medical field, better illumination conditions are required for both surgical and dental microscopes. The operation microscope is mainly suitable for suturing tiny blood vessels and nerves in the operation process and other fine operations or examinations needing to be carried out by means of the microscope, and the light intensity during the examination directly influences the observation of a user. The illumination optical system is an important component of the surgical microscope, and provides a clear and bright operation field and observation details for the surgical process.

The illumination mode of the operation microscope is divided into inner illumination and outer illumination. The prior art adopts external lighting device, and external lighting device passes through leaded light beam with the leading-in microscope mirror body of light usually, and rethread illumination optical system throws on the object plane, because the loss by a wide margin of optic fibre, its light source generally adopts powerful xenon lamp, halogen lamp or LED module, and machinery, electrical structure are complicated, and are with high costs, and the life-span is short, and the consumption is big. Some internally-arranged illuminating devices are adopted, illuminating beams of the internally-arranged illumination are emitted from the inside of the microscope body and consist of a light source, an optical cable and a part of optical elements which are arranged in the operating microscope, most of the internally-arranged illuminating beams can only provide monochromatic illumination, and the defect of low illumination output quality exists.

The patent with publication number CN210666182U discloses an external illumination device and an operation microscope, which is electrically connected to a lamp of the external illumination device by connecting the external illumination device to the bottom of a microscope body, and leading a power line from the microscope body. During lighting: the light emitted by the lamp is projected to an object surface to be observed from the light emitting opening through the condensing lens, the projecting lens and the reflecting mirror, so that illumination is realized. Although this structure can provide sufficient, angularly adjustable illumination to with low costs, longe-lived, the consumption is little, can install and dismantle on the microscope mirror body as required, but because external lighting device installs the bottom at the microscope mirror body usually, and the bottom of microscope mirror body is the observation area, increased external lighting device and will compress the observation area, to the field of vision of observing, the flexibility of microscope operation all can cause the influence.

The patent with publication number CN209879129U discloses an operating microscope, which includes a first illumination assembly and a second illumination assembly simultaneously arranged in a body of the operating microscope, wherein the first illumination assembly guides light of a first illumination light source out through a light guide beam, and the second illumination assembly guides light of a second illumination light source out through an illumination lens group. When the first illumination assembly and the second illumination assembly illuminate, the observation object is illuminated at the same time. Although this structure utilizes the characteristics that the leaded light bundle can be nimble crooked, easily arrange inside microscope mirror body, make can come convenient setting to the demand of lighting methods according to different operations, the quantity that sets up of optics mirror group on the illumination light path has been reduced, the illumination structure of complicacy has been avoided, do not increase the volume of microscope mirror body, but first lighting assembly, second lighting assembly's the light that jets out is not adjustable, can't ensure that first lighting assembly, the light that second lighting assembly shines can coincide, reach the most clear illuminating effect.

In addition, when the surgical operation requires better illumination conditions and the brightness of the light is adjusted to the limit, the LED illumination source is required to be added, but at the same time, many problems such as large volume, space occupation, complicated light path, complicated internal structure, etc. are caused.

Disclosure of Invention

The invention aims to provide a medical microscope.

In order to achieve the purpose, the invention adopts the technical scheme that:

a medical microscope comprises a shell, an observation unit and an illumination unit, wherein the observation unit and the illumination unit are arranged in the shell; the illumination unit comprises a first illumination unit and a second illumination unit, the first illumination unit comprises a first light source arranged on a first illumination light path, the second illumination unit comprises a second light source arranged on a second illumination light path, and the first illumination unit and the second illumination unit are both arranged in the shell and are respectively positioned at two sides of the large objective lens; the first lighting unit further comprises a first adjusting component which is arranged on the first lighting light path and used for adjusting the angle of light emitted by the first light source, and/or the second lighting unit further comprises a second adjusting component which is arranged on the second lighting light path and used for adjusting the angle of light emitted by the second light source.

Preferably, the light emitted from the first light source exits the housing through the large objective lens.

Preferably, the housing is provided with a light source exit hole, light emitted by the second light source exits the housing through the light source exit hole, and light emitted by the first light source and the second light source reaches the working area through respective optical elements to realize light source superposition and provide illumination for the working area; under the structure, the second illumination unit and the objective lens group can be arranged in a relatively dispersed manner, so that the visual angle above the objective lens group is not divided (shielded), but the whole volume of the shell is increased.

Further preferably, the light emitted from the second light source exits the housing through the large objective lens, and the light emitted from the first light source and the light emitted from the second light source reach the working area through the large objective lens after passing through the respective optical elements, so that the light output quality can be improved; under the structure, the second illumination unit is partially arranged above the large objective lens and divides the view angle above the objective lens group (blocks partial area), but the arrangement between the second illumination unit and the objective lens group is relatively compact, and the whole volume of the shell is reduced.

Preferably, an included angle larger than 0 degree and smaller than 90 degrees is formed between the central axis of the light emitted by the second light source and the central axis of the large objective lens, that is, the light emitted by the second light source is obliquely emitted relative to the central axis of the large objective lens, and a steering mirror group is not required to be arranged.

Preferably, the first adjusting component comprises a reflector, the reflector is rotatably arranged, the light emitted by the first light source is reflected by the reflector and then emitted, and the light emitted by the first light source is ensured to reach an accurate working area by rotating and adjusting the reflector, and is matched and superposed with the light emitted by the second light source.

Further preferably, the large objective lens includes a fixed portion and a movable portion, the movable portion is movable in the vertical direction of the housing, and drives the mirror to rotate when the movable portion moves, the fixed portion and the movable portion are disposed vertically, and the movable portion is located below the fixed portion.

Further preferably, the objective lens group comprises a movably arranged objective lens base and a rolling member connected to the objective lens base, and the moving part is arranged on the objective lens base; first adjusting part still include the speculum seat of rotatable setting, the speculum setting be in the speculum seat on, the speculum seat have a rolling surface, the rolling surface relative the upper and lower direction slope of casing set up, the speculum seat relative the another side of rolling surface on be connected with and give the speculum seat towards the elastic component of rolling surface one side elastic force, the rolling component on the objective seat support and support the rolling surface of speculum seat on.

Preferably, the second adjusting assembly includes a projection lens, the projection lens is movable on a plane perpendicular to a central axis of the light emitted from the second light source, and the light emitted from the second light source is emitted through the projection lens.

Further preferably, the light emitted by the second light source directly exits the housing without being reflected, and the direction of the light path is not changed, so that the light path is shortened, and the number of optical lenses is reduced.

Further preferably, the second adjusting assembly further comprises a driving source and a guide member in transmission connection with the driving source, and the projection mirror is arranged on the guide member.

Further preferably, the second adjusting component further comprises a transmission component, the transmission component comprises a gear sleeved at the output end of the driving source and a rack meshed with the gear, the rack is arranged on the guide piece, and the movement of the guide piece is driven by the gear and the rack.

Further preferably, the second adjusting assembly further comprises a limiting member disposed at a movement limit position of the guide member, so as to prevent the guide member from moving out of the set position.

Preferably, the moving part is movable in an up-down direction of the housing, and the projection mirror is moved in synchronization when the moving part moves.

Further preferably, the microscope further comprises a first driving motor for driving the moving part to move, and the first driving motor is provided with an encoder; the second adjusting component also comprises a second driving motor for driving the projection mirror to move, the encoder is in communication connection with the second driving motor, and can directly convert the displacement signal of the moving part into an electric signal through the encoder and send the electric signal to the second driving motor, so that the second driving motor can output corresponding power to the projection mirror according to the moving distance of the moving part, and the projection mirror can move accurately.

Preferably, the first illumination unit is located at a rear side of the large objective lens, and the second illumination unit is located at a front side of the large objective lens.

Preferably, the first illumination unit further includes a filter assembly disposed on the first illumination light path, the filter assembly includes one or more filters, and a plurality of the filters can be cut into or cut out of the first illumination light path, so as to provide more colors of illumination as required, for example, the filters include a green filter and an orange filter.

Preferably, the first light source and/or the second light source are/is an LED lamp, and the LED lamp has lower energy consumption, longer service life, good stability and small size compared with a halogen lamp, and is more compact and does not occupy too much space compared with a related structure.

Preferably, the medical microscope comprises a surgical microscope and a dental microscope.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

1. sufficient illumination can be provided, the cost is low, the service life is long, and the power consumption is low;

2. the built-in device is small, light and compact in structure;

3. the internal mechanism is simple, the light path is not complex, and the internal space is small;

4. the brightness adjustment is diversified and the superposition is accurate.

Drawings

FIG. 1 is a schematic view of the internal structure of a housing according to a first embodiment;

FIG. 2 is a schematic bottom view of the housing according to the first embodiment;

FIG. 3 is a schematic view of an objective lens assembly and a first adjusting assembly according to an embodiment;

fig. 4 is a schematic structural view of a second lighting unit in the first embodiment;

fig. 5 is a schematic view of the internal structure of the housing in the second embodiment.

In the above drawings:

1. a housing; 10. a light source exit aperture; 20. an objective lens seat; 21. a moving part; 22. a guide post; 23. connecting blocks; 24. a rolling member; 3. a first lighting unit; 30. a first light source; 31. a mirror; 32. a reflector base; 33. a swing block; 330. a rolling surface; 34. point turning; 4. a second lighting unit; 40. a second light source; 41. a projection mirror; 42. a heat dissipation base; 43. a second drive motor; 440. a gear; 441. a rack; 45. a guide member; 46. and a limiting member.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows:

fig. 1 shows a microscope body housing 1 of a medical microscope, which may be an operation microscope, a dental microscope, or the like, and an observation unit and an illumination unit are provided inside the housing 1. Specifically, the method comprises the following steps:

the observation unit comprises an eyepiece group, an optical lens group, a zoom diaphragm, an objective lens group and the like which are arranged on an observation light path. In this embodiment: the objective lens group includes objective lens seat 20, set up the big objective lens on objective lens seat 20, guide pillar 22 and the first driving motor that extends along the upper and lower direction of casing 1, big objective lens includes the fixed part that sets up from top to bottom, both lenses of removal portion 21, removal portion 21 is located the below of fixed part, objective lens seat 20 sets up on guide pillar 22, first driving motor 22 is connected its upper and lower direction removal that can be at casing 1 with objective lens seat 20 drive, make removal portion 21 in (apochromatic F =200 supplyes 450 mm) adjustable range, make it adjust and reach best observation position.

The illumination unit comprises a first illumination unit 3 (main illumination) and a second illumination unit 4 (auxiliary illumination), wherein the first illumination unit 3 and the second illumination unit 4 are both arranged in the shell 1 and are respectively positioned at two sides of the large objective lens, specifically, the first illumination unit 3 is positioned at the rear side (left side in the figure) of the large objective lens, and the second illumination unit 4 is positioned at the front side (right side in the figure) of the large objective lens. The light rays of the first lighting unit 3 and the second lighting unit 4 are finally converged after being emitted out of the shell 1, so that the superposition of the light sources is realized, and the lighting quality is higher.

The first illumination unit 3 includes a first light source 30 disposed on the first illumination light path 3, and a first adjustment component for adjusting an angle of light emitted from the first light source 30, and light emitted from the first light source 30 sequentially passes through the first adjustment component and the large objective lens to exit the housing 1.

The first adjusting component comprises a reflector 31, the reflector 31 is rotatably arranged, light emitted by the first light source 30 is reflected by the reflector 31 and then emitted, and the accurate working area of the light emitted by the first light source 30 is ensured by rotating and adjusting the reflector 31.

In this embodiment: the moving unit 21 rotates the mirror 31 when adjusting the up-and-down movement. The following structure for realizing the rotation of the reflector 31 driven by the movement of the moving part 21 is specifically provided:

as shown in fig. 2: the objective lens holder 20 is connected with a connecting block 23, and the connecting block 23 is connected with a rolling member 24, such as a bearing. The first adjusting assembly further includes a mirror base 32 rotatably disposed, the mirror 31 is disposed on the mirror base 32, a swing block 33 is connected to the mirror base 32, both the mirror base 32 and the swing block 33 can rotate around a rotation point 34 (the rotation point 34 is shown in the figure at the upper end of the swing block 33), and the mirror base 32 and the swing block 33 can also be integrally disposed. The swinging block 33 is provided with a rolling surface 330, the rolling surface 330 is obliquely arranged relative to the up-down direction of the shell 1 and inclines towards one side close to the large objective lens, and the rolling piece 24 on the objective lens seat 20 is abutted against the rolling surface 330 of the swinging block 33; the other side of the swing block 33 opposite to the rolling surface 330 is connected with an elastic member which gives an elastic force to the swing block 33 toward the rolling surface 330 side, and the elastic member can be connected to, for example, the housing 1. When the objective holder 20 moves up and down on the guide post 22, the rolling member 24 on the connecting block 23 is driven to roll up and down on the rolling surface 330 of the swinging block 33, so that the mirror holder 32 rotates around the rotating point 34, that is, the mirror 31 is also rotationally adjusted, and the optical position is changed accordingly. The rotation of the mirror 31 is usually small, typically around 2 °.

In addition, the first lighting unit further comprises a filter component arranged on the first lighting light path, the filter component comprises one or more filters, the filters can be switched into or out of the first lighting light path, and more colors of lighting can be provided according to needs, for example, the filters comprise a green filter and an orange filter. The optical filter can be switched or switched in and out by adopting a turntable.

The second illumination unit comprises a second light source 40 arranged on the second illumination light path and a second adjustment assembly used for adjusting the angle of light emitted by the second light source 40, and an included angle which is larger than 0 degree and smaller than 90 degrees is formed between the central axis of the light emitted by the second light source 40 and the central axis of the large objective lens, such as 30 degrees, 45 degrees, 60 degrees and the like, namely the light emitted by the second light source 40 is obliquely emitted relative to the central axis of the large objective lens, and a steering mirror group is not required to be arranged. In this embodiment: the housing 1 is provided with a light source exit hole 10, light emitted by the second light source 40 sequentially exits the housing 1 through the second adjusting component and the light source exit hole 10, and in this structure, the second illumination unit 4 and the objective lens group can be relatively arranged in a dispersed manner, so that the viewing angle above the objective lens group is not divided (shielded), but the overall volume of the housing is increased.

The second adjusting component comprises a projecting mirror 41, the projecting mirror 41 can move on a plane perpendicular to the central axis of the light emitted by the second light source 40, the light emitted by the second light source 40 is emitted after passing through the projecting mirror 41, and the light emitted by the second light source 40 can be ensured to reach an accurate working area by moving and adjusting the projecting mirror 41.

As shown in fig. 3: the second adjusting assembly further includes a heat sink 42, a second driving motor 43, a transmission assembly in transmission connection with the second driving motor 43, a guiding member 45 in connection with the transmission assembly, and a limiting member 46. The second light source 40 is disposed on the heat sink 42, the transmission assembly includes a gear 440 sleeved on the output end of the second driving motor 43, and a rack 441 engaged with the gear 440, and the rack 441 is disposed on the guide 45 and extends along the moving direction of the guide 45. During adjustment: the second driving motor 43 drives the gear 440 to rotate, and drives the rack 441 engaged therewith to move, so as to drive the guiding element 45 to move, thereby realizing the adjustment of the position of the projection lens 41, and the limiting element 46 can prevent the guiding element 45 from moving out of the set position.

In this embodiment: when the moving unit 21 adjusts the projection lens 41 in the vertical direction, the projection lens moves synchronously. The following embodiment describes a method for driving the projection mirror 41 to move by the movement of the moving part 21:

the first driving motor that drive objective lens seat 20 removed is provided with the encoder, and encoder and second driving motor communication connection can directly convert the displacement signal of removal portion 21 into the signal of telecommunication through the encoder, send for second driving motor to second driving motor can be according to the removal distance of removal portion to the corresponding power of projection mirror output, makes projection mirror 41 carry out accurate removal.

Thus, when the moving part 21 moves up and down, the mirror 31 is rotated and adjusted by means of mechanical transmission, and the projection mirror 41 is moved and adjusted by means of signal control. When the medical device is used, according to medical needs, the increase of the light spot size adjusting proportion can be realized by adjusting the change of the aperture size of the zoom diaphragm and the adjustment of the reflecting mirror 31 and the projecting mirror 41, meanwhile, the brightness is improved, and the brightness can also be improved by superposing the light rays emitted by the first lighting unit 3 and the second lighting unit 4 together.

The first light source 30 and/or the second light source 40 are LED lamps, and the LED lamps have lower energy consumption, longer service life, good stability and small size compared with halogen lamps, and are more compact in structure and do not occupy too much space. The switches of the first light source 30 and the second light source 40 can be switched electrically by a contact switch or a micro switch is used for giving a control signal. The first lighting unit 3 is normally turned on, and the second lighting unit 4 can function as a backup light source and increase the brightness of the light source, so that an excellent lighting effect can be achieved.

Example two:

this embodiment is substantially the same as the first embodiment, except that: in this embodiment: the light emitted by the second light source 40 exits the housing through the large objective lens, and the light emitted by the first light source 30 and the light emitted by the second light source 41 pass through the large objective lens and reach the working area after passing through the respective optical elements, so that the illumination output quality can be improved. However, in this configuration, the second illumination unit 4 is partially disposed above the large objective lens, and divides the angle of view above the objective lens group (blocks a partial region), but the arrangement between the second illumination unit 4 and the objective lens group is relatively compact, and the overall volume of the housing 1 is reduced.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.