CN213851130U - Microsurgery auxiliary device - Google Patents

Abstract

The utility model discloses a microsurgery auxiliary device, including mirror body and bore hole 3D display, be equipped with the imaging unit in the mirror body, the imaging unit includes big objective group, zoom lens group, first lens cone objective and light sensing element, big objective group, zoom lens group, first lens cone objective and light sensing element are in same observation light path in proper order, big objective group includes at least one positive lens group and at least one negative lens group, positive lens group and negative lens group are with the optical axis, positive lens group and negative lens group interval are adjustable, bore hole 3D display is connected with light sensing element, bore hole 3D display is apart from at 400 ~ 1200mm with the observer, the visual angle scope of bore hole 3D display is not less than 120 degrees. The utility model discloses microsurgery auxiliary device directly carries out the operation through observing bore hole 3D display, and device overall structure is simple, and the system delay is little, can select bore hole 3D display's fixed mode as required, and fixed knot constructs simply, reliably, and the part can be observed additional when necessary, realizes traditional visual observation.

Description

Microsurgery auxiliary device

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a microsurgery auxiliary device.

Background

Microsurgery is a delicate operation performed by means of a magnifying device, and an operation is performed under a traditional optical operation microscope, tissues are magnified, not only can fine tissues which are not clearly seen by naked eyes during the operation be clearly seen, but also the tissues have stereoscopic impression, so that a surgeon is facilitated to precisely dissect, cut and suture various tissues. However, even a surgeon who is experienced in suturing blood vessels with eyes, if not trained, is still not used to perform microsurgery, and often has inconsistent hands and eyes, which affects the operation under the microscope, so that a period of training and adaptation is required to perform a skilled operation under the operation microscope.

Because the exit pupil position of the eyepiece of the operating microscope is fixed, and the diameter of the exit pupil is generally only about 2mm, in order to observe a complete object plane view field, an operator needs to keep the pupil of the eye at the exit pupil position of the eyepiece for a long time, and even if the design of the microscope accords with ergonomics, the operator is easy to fatigue due to the unchanged posture for a long time. For some special affected parts, the operation microscope needs to be greatly inclined to observe, an operator still needs to adjust the position of the operator along with the ocular lens, although some operation microscopes are provided with compensation structures, the compensation range is limited, and the operation and the adjustment are needed.

For the reasons, a display is adopted to display video images in the technical scheme, but a common display cannot embody depth information and cannot be suitable for real-time surgery.

In addition, the technical scheme adopts a 3D display based on the polarization principle, so that an observer can see the stereoscopic image only by wearing polarized glasses, and the stereoscopic image display is not friendly to an operator wearing the glasses. Moreover, since the pixel-level microstructure of the FPR optical film is difficult to be further reduced, the size of the display of this solution is usually large, the distance between the operator and the display is usually more than 2 meters, and the observer needs to be almost facing the display to observe the ideal stereoscopic image. Since the human eye needs an accommodation process when observing objects with large differences in distance, the eye needs to refocus when the operator's line of sight is away from the display at a relatively large distance, and observes and adjusts microscope parameters or other auxiliary equipment at a relatively short distance, which adversely affects the continuity of the observation. The loss of light energy due to polarization also reduces the subjective brightness of human eyes, which is prone to visual fatigue.

CN109147913A discloses a display system and method for a two-way synchronous miniature image of a surgical microscope, wherein the system comprises the surgical microscope, a processing device, naked eye 3D display equipment and a projection screen, and the processing device comprises two output ends and a processing module; the processing module receives the operation image, performs spatial transformation according to the three-dimensional vertex coordinates of the primitives to obtain a rendered image, acquires a single depth image according to the rendered image, synthesizes a multi-viewpoint image according to the single depth image, and synchronously outputs the multi-viewpoint image to naked eye 3D display equipment and a projection screen through two output ends. The technical scheme can improve the learning and communication effects of the operation based on the operation microscope, but needs to perform data transformation and processing on the collected image, so that the image delay is greatly increased, and the method can only be used for learning communication and cannot be applied to actual microsurgery operation.

CN111045202A discloses a surgical microscope comprising an illumination system, an imaging system and an image processing system. The microscope has the advantages that multiple optical imaging subsystems are adopted for imaging simultaneously, different optical imaging systems correspond to different imaging functions, two large-depth-of-field and high-resolution left and right eye views are obtained through fusion calculation of multiple-optical-path multifunctional images, then 3D interweaving is carried out on the two images, the depth feeling of the finally obtained 3D image of the object is obviously reduced, the definition is effectively improved, the microscope has the advantages of being large in depth-of-field and high in resolution, meanwhile, the microscope also has good use comfort, and application requirements of doctors can be well met. The scheme also needs to carry out complex data processing on the acquired image, is difficult to meet the low-delay requirement required by the microsurgery, needs an eight-optical-path imaging system in addition, and has a complex structure and extremely high manufacturing cost.

Therefore, in combination with the above-mentioned technical problems, a new technical solution is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a microsurgery auxiliary device, observer's accessible observe bore hole 3D display and directly carry out the operation, and device overall structure is simple, and the system delay is little, can select bore hole 3D display's fixed mode according to the needs of the scene, and fixed knot constructs simply, reliably, and the part is observed to the accessible still additional when necessary, realizes traditional visual observation.

In order to realize the purpose of the utility model, according to one aspect of the utility model, the utility model provides a microsurgery auxiliary device, which comprises a lens body and a naked eye 3D display, wherein an imaging unit is arranged in the lens body, the imaging unit comprises a large objective lens group, a zoom lens group, a first lens cone objective lens and a photosensitive element, the large objective lens group, the zoom lens group, the first lens cone objective lens and the photosensitive element are sequentially positioned in the same observation light path, the big objective lens group comprises at least one positive lens group and at least one negative lens group which are arranged along the same optical axis, the distance between the positive lens group and the negative lens group can be adjusted, the naked eye 3D display is connected with the photosensitive element, the distance between the naked eye 3D display and an observer is 400-1200 mm, and the visual angle range of the naked eye 3D display is not less than 120 degrees.

In a further embodiment, the positive lens group includes at least two optical lenses made of different materials, the negative lens group is close to the object to be observed, the negative lens group includes an outer side surface and an inner side surface, the outer side surface and the inner side surface are both concave surfaces, and an absolute value of a curvature radius of the outer side surface is smaller than an absolute value of a curvature radius of the inner side surface.

In a further embodiment, the adjustment range of the distance between the positive lens group and the negative lens group is not less than 6 mm.

In a further embodiment, at least one illumination unit is further disposed in the lens body, illumination light of each illumination unit can illuminate an object to be observed through the large objective lens group, and the direction of the illumination light entering the large objective lens group is parallel to the direction of the optical axis of the large objective lens group; the illumination unit comprises a light source assembly, a condenser lens group, a diaphragm and a projection lens group which are sequentially arranged on the same illumination light path, the light source assembly comprises at least one LED light source, and at least one LED light source in the light source assembly can be driven to be switched to the illumination light path to illuminate an object to be observed.

In a further embodiment, the projection lens group comprises at least one first lens which can be driven to move in the direction of its optical axis; the zoom lens group is a continuous zoom structure and comprises at least two groups of second lenses, and the second lenses can be driven to move along the directions of respective optical axes.

In a further embodiment, the device further comprises an actuating device, and the projecting mirror group and the zoom mirror group are linked through the actuating device.

In a further embodiment, it has binocular viewing paths; the microsurgery auxiliary device further comprises an observation unit, the observation unit comprises an eyepiece, a turning lens group and a second lens cone objective lens, the imaging unit further comprises a beam splitter group, in the same observation light path, light sequentially passes through the large objective lens group and the zoom lens group to reach the beam splitter group, the beam splitter group splits the light into two parts, one part of the light sequentially passes through the first lens cone objective lens to reach the photosensitive element, and the other part of the light sequentially passes through the second lens cone objective lens, the turning lens group and the eyepiece.

In a further embodiment, the endoscope system further comprises a support, wherein the support comprises a base, a support rod vertically arranged on the base, a large cross arm rotatably arranged on the support rod, a small cross arm rotatably arranged on the large cross arm and a balance arm rotatably arranged on the small cross arm, and the endoscope body and the observation unit are arranged on the balance arm; the naked eye 3D display is arranged on the large cross arm or the supporting rod; or the microsurgery auxiliary device further comprises a base body and a connecting rod arranged on the base body, the naked eye 3D display is arranged at one end of the connecting rod, and the naked eye 3D display can be placed on the ground or hung on the roof through the base body and the connecting rod.

In a further embodiment, the other end of the connecting rod is movably mounted on the seat body, the connecting rod can be driven to move along the axis direction of the connecting rod, and/or the connecting rod can be driven to rotate by taking the axis of the connecting rod as a rotating shaft.

In a further embodiment, the naked eye 3D display is between 12-16 inches in size; the microsurgery auxiliary device further comprises an acquisition device, a processing device and a driving device, wherein the acquisition device can be configured to acquire the position information of human eyes of an observer, and the processing device is configured to control the driving device to act according to the acquired position information of the human eyes so as to adjust the display angle of the naked eye 3D display.

Compared with the prior art, the microsurgery auxiliary device of this application has following one or more beneficial effect:

(1) according to the microsurgery auxiliary device, an observer can directly perform surgery operation by observing the naked eye 3D display, the whole system is simple in structure, complex data processing is not needed to be performed on images, and the system delay is small;

(2) according to the microsurgery auxiliary device, the naked eye 3D display is arranged in the range of 400-1200 mm and is close to the observation distance of clinical common equipment, when an observer performs sight line switching between the observation display and other equipment, human eyes do not need to focus repeatedly, and time and labor are saved; the brightness is not lost, and the visual fatigue is reduced. Meanwhile, the closer observation distance accords with the approach habit of human eyes when resolving details; the naked eye 3D display can select different fixing modes according to different field conditions and use habits, and the fixing structure is simple and reliable;

(3) the microsurgery auxiliary device can realize convenient observation of different magnifications of tissue structures at different depths;

(4) according to the microsurgical auxiliary device, the focal length of the large objective lens with the variable focal length can be changed conveniently, namely the working distance of operation can be changed, the required surgical depth can be covered, meanwhile, the observation of different magnification ratios can be realized through the double-light-path variable-power lens group, and the affected part can be observed wholly and locally;

(5) according to the microsurgery auxiliary device, the observation angle does not need to be right, and the orientation of the display does not need to be adjusted within the range of the common observation angle;

(6) the microsurgery auxiliary device can be additionally provided with a visual observation component when necessary, so that the traditional visual observation is realized;

(7) according to the microsurgical auxiliary device, the optical axis of the illumination light path is parallel to the optical axis of the large objective lens, so that the reflection loss can be reduced, the symmetrical double light paths can be arranged to enhance the illumination intensity, the transverse volume of the system is compressed, and the lens balance is facilitated;

(8) according to the microsurgery auxiliary device, the projection lens group and the zoom lens group can be linked, so that the size of an illumination spot can be adjusted simultaneously when the magnification observation is changed, the risk of light damage possibly caused to tissues outside a visual field is reduced, the illuminance inside the visual field is improved, and the reduction of the subjective brightness of human eyes during high-magnification observation is compensated;

(9) the application discloses microsurgery auxiliary device, its bore hole 3D display can also the eyes of autotracking observer, guarantees the best observation angle.

Drawings

FIG. 1 is a schematic structural diagram of a microsurgical auxiliary device provided in an embodiment of the present application;

FIGS. 2a and 2b are schematic diagrams illustrating optical paths of the microsurgical auxiliary device provided by the embodiment of the application in two states when the distance between the positive lens group and the negative lens group is adjusted;

FIG. 3 is a schematic diagram illustrating an optical path of the microsurgical auxiliary device provided in the embodiment of the present application when the observation unit is provided;

FIG. 4 is a schematic structural view of a microsurgical auxiliary device provided with an observation unit according to an embodiment of the application;

FIG. 5 is a schematic view of a microsurgical aid provided in an embodiment of the present application in a dental clinic;

FIGS. 6a and 6b are schematic diagrams illustrating optical paths of the microsurgical auxiliary device provided by the embodiment of the application when a dual-illumination optical path is provided;

fig. 7 is a schematic diagram illustrating an optical path principle of the microsurgical auxiliary device provided in the embodiment of the present application when the projection lens group and the zoom lens group are linked;

FIG. 8 is a schematic view of a naked eye 3D display viewing angle and distance of the microsurgical assistance device provided by the embodiment of the application;

9a-9c are schematic structural views of the microsurgical assistant device provided by the embodiment of the application when the naked eye 3D display is installed on the bracket;

fig. 10a and 10b are schematic views illustrating the installation of the microsurgical auxiliary device provided by the embodiment of the application when the naked-eye 3D display is installed outside the bracket.

Wherein, 1-lens body, 10-imaging unit, 11-large objective lens group, 111-positive lens group, 112-negative lens group, 1121-outer side surface, 1122-inner side surface, 12-zoom lens group, 121-second lens, 13-first lens cone objective lens, 14-photosensitive element, 15-observation optical path, 16-beam splitter group, 2-naked eye 3D display, 21-seat, 22-connecting rod, 3-lighting unit, 31-light source component, 311-LED light source, 32-condenser lens group, 33-diaphragm, 34-projection lens group, 341-first lens, 35-lighting optical path, 4-observation unit, 41-ocular lens, 42-turning lens group, 43-second lens cone, 5-observer, 6-bracket, 61-base, 62-supporting rod, 63-big cross arm, 64-small cross arm and 65-balance arm.

Best mode for carrying out the invention

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.

Referring to fig. 1 to 10, fig. 1 is a schematic structural diagram of an auxiliary device for microsurgery provided in an embodiment of the present application; FIGS. 2a and 2b are schematic diagrams illustrating optical paths of the microsurgical auxiliary device provided by the embodiment of the application in two states when the distance between the positive lens group and the negative lens group is adjusted; FIG. 3 is a schematic diagram illustrating an optical path of the microsurgical auxiliary device provided in the embodiment of the present application when the observation unit is provided; FIG. 4 is a schematic structural view of a microsurgical auxiliary device provided with an observation unit according to an embodiment of the application; FIG. 5 is a schematic view of a microsurgical aid provided in an embodiment of the present application in a dental clinic; FIGS. 6a and 6b are schematic diagrams illustrating optical paths of the microsurgical auxiliary device provided by the embodiment of the application when a dual-illumination optical path is provided; fig. 7 is a schematic diagram illustrating an optical path principle of the microsurgical auxiliary device provided in the embodiment of the present application when the projection lens group and the zoom lens group are linked; FIG. 8 is a schematic view of a naked eye 3D display viewing angle and distance of the microsurgical assistance device provided by the embodiment of the application; 9a-9c are schematic structural views of the microsurgical assistant device provided by the embodiment of the application when the naked eye 3D display is installed on the bracket; fig. 10a and 10b are schematic views illustrating the installation of the microsurgical auxiliary device provided by the embodiment of the application when the naked-eye 3D display is installed outside the bracket.

Examples

The application provides a microsurgery auxiliary device, it includes microscope body 1 and bore hole 3D display 2. An imaging unit 10 is arranged in the lens body 1, the imaging unit 10 includes a large objective lens group 11, a zoom lens group 12, a first tube objective lens 13 and a photosensitive element 14, and the large objective lens group 11, the zoom lens group 12, the first tube objective lens 13 and the photosensitive element 14 are sequentially located in a same observation optical path 15, as shown in fig. 1 or fig. 2a and fig. 2 b.

The large objective lens group 11 comprises at least one positive lens group 111 and at least one negative lens group 112, the positive lens group 111 and the negative lens group 112 are arranged on the same optical axis, the distance between the positive lens group 111 and the negative lens group 112 can be adjusted, and the adjusting range of the distance between the positive lens group 111 and the negative lens group 112 is not less than 6 mm. The large objective lens with the variable focal length can conveniently change the focal plane position, namely the working distance of operation, and cover the required operation depth. This is achieved by varying the distance between the positive lens group 111 and the negative lens group 112, the adjustment range of the working distance being proportional to the distance range between the positive lens group 111 and the negative lens group 112, as shown in fig. 2a and 2 b. The positive lens group 111 includes at least two optical lenses made of different materials, the negative lens group 112 is close to an object to be observed, the negative lens group 112 includes an outer side surface 1121 and an inner side surface 1122, the outer side surface 1121 and the inner side surface 1122 are both concave surfaces, and an absolute value of a curvature radius of the outer side surface 1121 is smaller than an absolute value of a curvature radius of the inner side surface 1122.

The binocular observation optical path design is preferably adopted in the application, each observation optical path 15 is internally provided with a zoom lens group 12, a first lens barrel objective lens 13 and a photosensitive element 14, and the two observation optical paths 15 share one large objective lens group 11. The double-light-path zoom lens group 12 realizes observation with different magnifications and can carry out overall and local observation on the affected part. The variable power lens group 12 is preferably an afocal galilean structure, and can be stepped variable power or continuous variable power. When the variable power lens group 12 is a continuous variable power structure, it includes at least two groups of second lenses 121, and the second lenses 121 can be driven to move along the respective optical axis directions. The combination of the zoom lens group 12 and the objective lens with variable focal length enables the microsurgery auxiliary device to realize convenient observation of different magnifications of tissue structures at different depths.

The microsurgical auxiliary device of the application also comprises a bracket 6, wherein the bracket 6 comprises a base 61, a supporting rod 62 vertically arranged on the base 61, a big cross arm 63 rotatably arranged on the supporting rod 62, a small cross arm 64 rotatably arranged on the big cross arm 63 and a balance arm 65 rotatably arranged on the small cross arm 64, and the microscope body 1 is arranged on the balance arm 65, as shown in fig. 4 or fig. 9a-9 c.

The naked eye 3D display 2 is connected with the photosensitive element 14. The naked eye 3D display 2 is between 12-16 inches in size. As shown in fig. 8, the visible distance between the naked eye 3D display and the observer 5 is 400-1200 mm, and the visible angle range of the naked eye 3D display is not less than 120 degrees, preferably not less than 90 degrees. The naked eye 3D display can select different fixing modes according to different site conditions and use habits, and is simple and reliable in fixing structure. For example, the naked-eye 3D display may be mounted on the upper surface of the large cross arm 63 and above the supporting rod 62, as shown in fig. 9 a; it can also be suspended from the lower surface of the big crossbar 63, as shown in fig. 9 c; or may be mounted directly on the support bar 62 as shown in figure 9 b. Whether mounted on the large cross arm 63 or the supporting rod 62, the naked-eye 3D display can be rotatably mounted, fixedly mounted, or detachably or movably mounted. Meanwhile, the naked-eye 3D display 2 may not be mounted on the bracket 6 of the auxiliary device, and may be placed on the ground through the seat body 21 and the connecting rod 22, as shown in fig. 10a, or suspended on the roof, as shown in fig. 10 b. The naked eye 3D display 2 is mounted at one end of the connecting rod 22, the other end of the connecting rod 22 is movably mounted on the base 21, and the connecting rod 22 can be driven to move along the axis direction relative to the base 21 or rotate by taking the axis as a rotating shaft, so that the mounting position of the naked eye 3D display 2 can be adjusted. Bore hole 3D display sets up at 400 ~ 1200mm within range, is close with the observation distance of clinical equipment commonly used, when observer 5 carries out the sight switching between observing display and other equipment, people's eye need not focus repeatedly, labour saving and time saving. The brightness is not lost, and the visual fatigue is reduced. Meanwhile, the closer observation distance accords with the approach habit of human eyes when resolving details. This application adopts bore hole 3D display as bore hole 3D display 2 for 5 accessible of observer observe bore hole 3D display directly carry out the operation, and device overall structure is simple, need not carry out complicated data processing to the image, and the system delay is little. In addition, due to the use of the naked eye 3D display, the observation angle of an observer 5 does not need to be right, the object to be observed can be clearly observed within a certain observation angle range, and the orientation of the display does not need to be adjusted. In the dental clinic, the doctor is usually located at six o ' clock position, and when the doctor needs to make a temporary examination or operation on the maxillary molars, the doctor can move to nine o ' clock and three o ' clock positions, and can normally observe the maxillary molars without adjusting the angle of the display, as shown in fig. 5.

In a further embodiment, the microsurgical auxiliary device further comprises a collecting device, a processing device and a driving device, the collecting device can be configured to collect the position information of the human eyes of the observer 5, the processing device is configured to control the driving device to act according to the collected position information of the human eyes, and the display angle of the naked eye 3D display 2 is adjusted, so that the naked eye 3D display 2 can automatically track the eyes of the observer 5 and rotate along with the eyes, and the optimal observation angle is ensured.

Still be equipped with at least one lighting unit 3 in the mirror body 1, each lighting unit 3's illumination light can pass through big objective lens group 11 treats the observed object and throws light on, and gets into big objective lens group 11's illumination light direction with big objective lens group 11's optical axis direction is parallel, can reduce reflection loss, and can arrange into symmetrical two illumination light path 35 in order to strengthen illumination intensity, and the horizontal volume of compression system is convenient for the mirror body balance, as shown in fig. 6a and 6 b. The illumination unit 3 includes a light source assembly 31, a condenser lens group 32, a diaphragm 33 and a projection lens group 34 which are sequentially located on the same illumination light path 35. The light source assembly 31 includes at least one LED light source 311, and at least one LED light source 311 in the light source assembly 31 can be driven to switch to the illumination light path 35 to illuminate the object to be observed. For example, the light source module 31 may include at least one monochromatic light source (for fluorescent mode) in addition to the white light source, and may be switched with the white light source into the illumination light path 35. The projecting mirror group 34 includes at least one first lens 341, and the first lens 341 can be driven to move along the optical axis direction thereof.

In a further embodiment, the microsurgical auxiliary device of the present application may further include a transmission device disposed between the projecting lens group 34 and the zoom lens group 12 for realizing the linkage between the projecting lens group 34 and the zoom lens group 12, as shown in fig. 7, the transmission device is not directly shown in the drawing, and the linkage between the projecting lens group 34 and the zoom lens group 12 is schematically represented by a broken line. When the observation is carried out at low magnification, the diameter of the object plane imaging field of view is large, the illumination light spots need to cover the whole object plane field of view, but when the observation is switched to high magnification, the diameter of the object plane field of view is rapidly reduced, and the projection lens group 34 of the illumination light path 35 is correspondingly adjusted, so that the illumination light spots can be reduced, the risk of light injury possibly caused to tissues outside the field of view is reduced, meanwhile, the illumination intensity inside the field of view is favorably improved, and the reduction of the subjective brightness of human eyes during high-magnification observation is compensated.

In a further embodiment, if necessary, the microsurgical aid of the present application can also be provided with an observation unit 4 on the body 1, enabling conventional visual observation, as shown in fig. 4. As shown in fig. 3, the observation unit 4 includes an eyepiece 41, a turning mirror group 42 (or a prism group), and a second-barrel objective lens 43. The imaging unit 1 further comprises a beam splitter group 16, in the same observation optical path 15, light rays sequentially pass through the large objective lens group 11 and the zoom lens group 12 to reach the beam splitter group 16, the beam splitter group 16 splits the light rays into two parts, one part of the light rays sequentially pass through the first tube objective lens 13 to reach the photosensitive element 14, and the other part of the light rays sequentially pass through the second tube objective lens 43, the turning lens group 42 and the eyepiece 41. Thus, when in use, the observer 5 can observe the object to be observed through the naked eye 3D display 2 and can also observe the object to be observed in a traditional visual observation mode, and the operability and the adaptability of the microsurgery auxiliary device are greatly enhanced.

As used herein, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A microsurgery auxiliary device is characterized by comprising a microscope body (1) and a naked eye 3D display (2), wherein an imaging unit (10) is arranged in the microscope body (1), the imaging unit (10) comprises a large objective lens group (11), a zoom lens group (12), a first tube objective lens (13) and a photosensitive element (14), the large objective lens group (11), the zoom lens group (12), the first tube objective lens (13) and the photosensitive element (14) are sequentially arranged in the same observation light path (15), the large objective lens group (11) comprises at least one positive lens group (111) and at least one negative lens group (112), the positive lens group (111) and the negative lens group (112) are arranged along the same optical axis, the distance between the positive lens group (111) and the negative lens group (112) is adjustable, and the naked eye 3D display (2) is connected with the photosensitive element (14), the distance between the naked eye 3D display (2) and an observer (5) is 400-1200 mm, and the visual angle range of the naked eye 3D display (2) is not less than 120 degrees.

2. The microsurgical assistance device according to claim 1, wherein the positive lens group (111) comprises at least two optical lenses made of different materials, the negative lens group (112) is close to an object to be observed, the negative lens group (112) comprises an outer side surface (1121) and an inner side surface (1122), the outer side surface (1121) and the inner side surface (1122) are both concave surfaces, and an absolute value of a curvature radius of the outer side surface (1121) is smaller than an absolute value of a curvature radius of the inner side surface (1122).

3. Microsurgical assistance device according to claim 1, characterized in that the adjustment range of the distance between the positive lens group (111) and the negative lens group (112) is not less than 6 mm.

4. The microsurgical auxiliary device according to claim 1, characterized in that at least one lighting unit (3) is further arranged in the microscope body (1), the lighting ray of each lighting unit (3) can illuminate the object to be observed through the large objective lens group (11), and the direction of the lighting ray entering the large objective lens group (11) is parallel to the direction of the optical axis of the large objective lens group (11);

the illumination unit (3) comprises a light source assembly (31), a condensing lens group (32), a diaphragm (33) and a projecting lens group (34) which are sequentially arranged on the same illumination light path (35), the light source assembly (31) comprises at least one LED light source (311), and at least one LED light source (311) in the light source assembly (31) can be driven to be switched to the illumination light path (35) to illuminate an object to be observed.

5. Microsurgical assistance device according to claim 4, wherein the projecting mirror group (34) comprises at least one first lens (341), the first lens (341) being movable in the direction of its optical axis by actuation;

the zoom lens group (12) is a continuous zoom structure and comprises at least two groups of second lenses (121), and the second lenses (121) can be driven to move along the directions of respective optical axes.

6. Microsurgical assistance device according to claim 5, further comprising an actuator by which said projecting lens group (34) and variable lens group (12) are linked.

7. Microsurgical assistance device according to claim 1, characterized in that it has binocular viewing optical paths (15);

the microsurgery auxiliary device further comprises an observation unit (4), wherein the observation unit (4) comprises an ocular lens (41), a turning lens group (42) and a second lens cone objective lens (43), the imaging unit (10) further comprises a beam splitter group (16), in the same observation light path (15), light sequentially passes through the large objective lens group (11) and the zoom lens group (12) to reach the beam splitter group (16), the beam splitter group (16) splits the light into two parts, one part of the light sequentially passes through the first lens cone objective lens (13) to reach the photosensitive element (14), and the other part of the light sequentially passes through the second lens cone objective lens (43), the turning lens group (42) and the ocular lens (41).

8. Microsurgical assistance device according to claim 7, characterized in that it further comprises a stand (6), said stand (6) comprising a base (61), a support bar (62) vertically mounted on said base (61), a large crossbar (63) rotatably mounted on said support bar (62), a small crossbar (64) rotatably mounted on said large crossbar (63), and a balance arm (65) rotatably mounted on said small crossbar (64), said scope body (1) and said observation unit (4) being mounted on said balance arm (65);

the naked eye 3D display (2) is arranged on the large cross arm (63) or the supporting rod (62); or the microsurgery auxiliary device further comprises a base body (21) and a connecting rod (22) installed on the base body (21), the naked eye 3D display (2) is installed at one end of the connecting rod (22), and the naked eye 3D display (2) can be placed on the ground or hung on the roof through the base body (21) and the connecting rod (22).

9. Microsurgical assistance device according to claim 8, wherein the other end of the connecting rod (22) is movably mounted on the seat (21), the connecting rod (22) can be driven to move along the axis direction thereof, and/or the connecting rod (22) can be driven to rotate around the axis thereof.

10. Microsurgical assistance device according to claim 1, characterized in that the naked-eye 3D display (2) has dimensions between 12-16 inches;

the microsurgery auxiliary device further comprises an acquisition device, a processing device and a driving device, wherein the acquisition device can be configured to acquire the position information of human eyes of an observer (5), and the processing device can be configured to control the driving device to act according to the acquired position information of the human eyes and adjust the display angle of the naked eye 3D display (2).

Images