Microsurgery assisting device

Abstract

The present invention discloses a microsurgery assisting device, comprising a mirror body and a naked-eye 3D display, wherein an imaging unit is arranged in the mirror body, wherein the imaging unit comprises a large objective lens group, a zoom lens group, a first lens barrel objective lens and a photosensitive element, wherein the large objective lens group, the zoom lens group, the first lens barrel objective lens and the photosensitive element are sequentially located in the same observation optical path, wherein the large objective lens group comprises at least one positive lens group and at least one negative lens group, wherein the positive lens group and the negative lens group have the same optical axis, wherein the spacing between the positive lens group and the negative lens group is adjustable, wherein the naked-eye 3D display is connected to the photosensitive element, wherein the distance between the naked-eye 3D display and the observer is 400 to 1200 mm, and wherein the viewing angle range of the naked-eye 3D display is not less than 120 degrees. In the microsurgery assisting device of the present invention, an observer can directly perform a surgical operation by observing the naked-eye 3D display, wherein the overall structure of the device is simple, and the system delay is small, wherein the fixing method of the naked-eye 3D display can be selected according to the needs of the field, wherein the fixing structure is simple and reliable, and an observation component can be added when necessary to realize traditional visual observation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a microsurgery auxiliary device. Background Art

[0002] Microsurgery is a delicate surgery performed with the help of magnifying equipment. When performing surgery under a traditional optical surgical microscope, the tissue is magnified, and not only can the tiny tissues that cannot be seen with the naked eye be seen clearly during surgery, but also a three-dimensional sense can be seen, which is conducive to the surgeon's precise dissection, incision and suture of various tissues. However, even surgeons who are very experienced in suturing blood vessels with the naked eye will still be very uncomfortable when they first start microsurgery without special training, and often have hand-eye coordination problems, which affects the surgical operation under the microscope. Therefore, it takes a period of training and adaptation to be able to perform surgery skillfully under a surgical microscope.

[0003] Since the exit pupil position of the surgical microscope eyepiece is fixed and the exit pupil diameter is generally only about 2mm, in order to observe the complete object field, the operator needs to keep the pupil of the eye at the exit pupil position of the eyepiece for a long time. Even if the design of the microscope is ergonomic, it is easy for the operator to fatigue if the posture remains unchanged for a long time. For some special affected areas, the surgical microscope needs to be tilted significantly for observation. At this time, the operator still needs to adjust his position following the eyepiece. Although some surgical microscopes are equipped with compensation structures, the compensation range is mostly limited and requires operation and adjustment.

[0004] Based on the above reasons, there is a technical solution that uses a display to display video images, but ordinary displays cannot reflect depth information and cannot be used for real-time surgery.

[0005] There is also a technical solution that uses a 3D display based on the principle of polarization. The observer needs to wear polarized glasses to see the three-dimensional image, which is not friendly to the operator who wears glasses. Moreover, since the pixel-level microstructure of the FPR optical film is difficult to further reduce, the display size of this solution is usually large, and its placement distance from the operator usually needs to be more than 2 meters, and the observer needs to be almost facing the display to observe the ideal three-dimensional image. Because the human eye needs an adjustment process when observing objects with large distance differences, when the operator's line of sight leaves the distant display and observes and adjusts the microscope parameters or other auxiliary equipment at a closer distance, the eyes need to refocus, which will have an adverse effect on the continuity of observation. The loss of light energy caused by polarization will also reduce the subjective brightness of the human eye, which can easily cause visual fatigue.

[0006] CN109147913A discloses a display system and method for dual-channel synchronous micro-images of a surgical microscope. The system includes a surgical microscope, a processing device, a naked-eye 3D display device, and a projection screen. The processing device includes two output terminals and a processing module. The processing module receives the surgical image, performs spatial transformation according to the three-dimensional vertex coordinates of the primitive to obtain a rendered image, obtains a single depth image according to the rendered image, and synthesizes a multi-view image according to the single depth image, and outputs the multi-view image synchronously to the naked-eye 3D display device and the projection screen through the two output terminals. This technical solution can improve the learning and communication effect of surgery based on a surgical microscope, but it requires data transformation and processing of the collected images, which greatly increases the image delay. It can only be used for learning and communication, and cannot be applied to actual microsurgery operations.

[0007] CN111045202A discloses a surgical microscope, which includes an illumination system, an imaging system, and an image processing system. A multi-path optical imaging subsystem is used for simultaneous imaging, and different optical imaging systems correspond to different imaging functions. Two left and right eye views with large depth of field and high resolution are obtained by fusion calculation of multi-path multifunctional images, and then the two images are interlaced in 3D. The depth of the object 3D image finally obtained is significantly reduced, and the clarity is effectively improved. It has the characteristics of large depth of field and high resolution. At the same time, the microscope also has good comfort in use and can well meet the application needs of doctors. This solution also requires complex data processing of the collected images, which is difficult to meet the low latency requirements of microsurgery. In addition, an eight-path imaging system is required, which has a complex structure and extremely high manufacturing cost.

[0008] Therefore, in view of the above-mentioned existing technical problems, it is necessary to propose a new technical solution. Summary of the invention

[0009] The purpose of the present invention is to provide a microsurgery auxiliary device, which allows the observer to directly perform surgical operations by observing a naked-eye 3D display. The overall structure of the device is simple, the system delay is small, and the fixing method of the naked-eye 3D display can be selected according to the needs of the field. The fixing structure is simple and reliable, and additional observation components can be added when necessary to achieve traditional visual observation.

[0010] To achieve the purpose of the invention, according to one aspect of the present invention, the present invention provides a microsurgery auxiliary device, which includes a lens body and a naked-eye 3D display, wherein an imaging unit is arranged in the lens body, and the imaging unit includes a large objective lens group, a magnification lens group, a first lens barrel objective lens and a photosensitive element, wherein the large objective lens group, the magnification lens group, the first lens barrel objective lens and the photosensitive element are sequentially located in the same observation light path, the large objective lens group includes at least one positive lens group and at least one negative lens group, the positive lens group and the negative lens group are arranged on the same optical axis, the distance between the positive lens group and the negative lens group is adjustable, the naked-eye 3D display is connected to the photosensitive element, the distance between the naked-eye 3D display and the observer is between 400 and 1200 mm, and the viewing angle range of the naked-eye 3D display is not less than 120 degrees.

[0011] In a further embodiment, the positive lens group includes at least two optical lenses made of different materials, the negative 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, both the outer side surface and the inner side surface are concave surfaces, and the absolute value of the radius of curvature of the outer side surface is smaller than the absolute value of the radius of curvature of the inner side surface.

[0012] 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.

[0013] In a further embodiment, at least one lighting unit is further provided in the lens body, and the lighting light of each lighting unit can illuminate the object to be observed through the large objective lens group, and the direction of the lighting light entering the large objective lens group is parallel to the optical axis direction of the large objective lens group; the lighting unit includes a light source assembly, a condenser lens group, an aperture and a projection lens group which are sequentially located in the same lighting light path, the light source assembly includes at least one LED light source, and at least one LED light source in the light source assembly can be driven to switch to the lighting light path to illuminate the object to be observed.

[0014] In a further embodiment, the projection lens group includes at least one first lens, which can be driven to move along its optical axis; the zoom lens group is a continuous zoom structure, which includes at least two groups of second lenses, which can be driven to move along their respective optical axes.

[0015] In a further embodiment, it further comprises a transmission device, and the projection lens group and the variable power lens group are linked by the transmission device.

[0016] In a further embodiment, it has a binocular observation optical path; the microsurgery auxiliary device also includes an observation unit, which includes an eyepiece, a turning lens group and a second lens barrel objective lens, and the imaging unit also includes a beam splitter group. In the same observation optical path, light passes through the large objective lens group and the zoom lens group in sequence to reach the beam splitter group, and the beam splitter group splits the light into two parts, one part of the light passes through the first lens barrel objective lens in sequence to reach the photosensitive element, and the other part of the light passes through the second lens barrel objective lens, the turning lens group and the eyepiece in sequence.

[0017] In a further embodiment, it also includes a bracket, which includes a base, a support rod vertically mounted on the base, a large horizontal arm rotatably mounted on the support rod, a small horizontal arm rotatably mounted on the large horizontal arm, and a balance arm rotatably mounted on the small horizontal arm, and the mirror body and the observation unit are mounted on the balance arm; the naked-eye 3D display is mounted on the large horizontal arm or the support rod; or the microsurgery auxiliary device also includes a seat and a connecting rod mounted on the seat, the naked-eye 3D display is mounted on one end of the connecting rod, and the naked-eye 3D display can be placed on the ground or suspended on the roof through the seat and the connecting rod.

[0018] In a further embodiment, the other end of the connecting rod is movably mounted on the seat body, and the connecting rod can be driven to move along its axial direction, and / or the connecting rod can be driven to rotate with its axis as a rotation axis.

[0019] In a further embodiment, the size of the naked-eye 3D display is between 12 and 16 inches; the microsurgery auxiliary device also includes a collection device, a processing device and a driving device, the collection device can be configured to collect the observer's eye position information, and the processing device is configured to control the action of the driving device according to the collected eye position information to adjust the display angle of the naked-eye 3D display.

[0020] Compared with the prior art, the microsurgery assisting device of the present application has one or more of the following beneficial effects:

[0021] (1) The microsurgery assisting device of the present application enables the observer to directly perform the surgical operation by observing the naked-eye 3D display. The overall structure of the system is simple, and there is no need to perform complex data processing on the image, and the system delay is small;

[0022] (2) The microsurgery assisting device of the present application has a naked-eye 3D display set within the range of 400 to 1200 mm, which is close to the observation distance of commonly used clinical equipment. When the observer switches his sight between the display and other equipment, the human eye does not need to repeatedly adjust the focus, saving time and effort; there is no loss of brightness, which reduces visual fatigue. At the same time, the closer observation distance conforms to the human eye's approach habit when distinguishing details; the naked-eye 3D display can choose different fixing methods according to different site conditions and usage habits, and the fixing structure is simple and reliable;

[0023] (3) The microsurgery assisting device of the present application can realize convenient observation of tissue structures at different depths at different magnifications;

[0024] (4) The microsurgery assisting device of the present application has a large objective lens with a variable focal length, which can conveniently change the focal plane position, that is, the operating working distance, to cover the required surgical depth. At the same time, the dual-optical path zoom lens group realizes observation at different magnifications, and can perform overall and local observation of the affected area;

[0025] (5) The microsurgery assisting device of the present application does not need to face the viewing angle directly, and within the commonly used viewing angle range, there is no need to adjust the display orientation;

[0026] (6) The microsurgery assisting device of the present application may be equipped with a visual observation component when necessary to achieve traditional visual observation;

[0027] (7) The microsurgery assisting device of the present application has an illumination light path optical axis arranged parallel to the optical axis of the large objective lens, which can reduce reflection loss, and can be arranged into a symmetrical double light path to enhance illumination intensity, compress the lateral volume of the system, and facilitate lens balance;

[0028] (8) The microsurgery assisting device of the present application has a linkage between the projection lens group and the zoom lens group, which can adjust the size of the illumination spot at the same time when changing the magnification for observation, thereby reducing the risk of light damage to tissues outside the field of view. It is also beneficial to increase the illumination inside the field of view and compensate for the decrease in subjective brightness of the human eye during high-magnification observation;

[0029] (9) The naked-eye 3D display of the microsurgery assisting device of the present application can also automatically track the observer's eyes to ensure the best observation angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of a microsurgery assisting device provided in an embodiment of the present application;

[0031] Figure 2 a and Figure 2 b is a schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application in two states when adjusting the distance between the positive lens group and the negative lens group;

[0032] Figure 3 A schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application when an observation unit is provided;

[0033] Figure 4 A schematic diagram of the structure of the microsurgery assisting device provided in an embodiment of the present application when an observation unit is provided;

[0034] Figure 5 A schematic diagram of the application status of the microsurgery auxiliary device provided in an embodiment of the present application in dental clinics;

[0035] Figure 6 a and Figure 6 b is a schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application when a dual illumination optical path is provided;

[0036] Figure 7 A schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application when the projection lens group and the zoom lens group are linked;

[0037] Figure 8 A schematic diagram of the viewing angle and distance of a naked-eye 3D display of a microsurgery assisting device provided in an embodiment of the present application;

[0038] Fig. 9 a- Fig. 9 c is a schematic diagram of the structure of the microsurgery assisting device provided in an embodiment of the present application when the naked-eye 3D display is installed on a bracket;

[0039] Fig.10 a and Fig.10 b is a schematic diagram of the installation of the microsurgery assisting device provided in an embodiment of the present application when the naked-eye 3D display is installed outside the bracket.

[0040] Among them, 1-lens body, 10-imaging unit, 11-large objective lens group, 111-positive lens group, 112-negative lens group, 1121-outer side, 1122-inner side, 12-zoom lens group, 121-second lens, 13-first lens barrel objective, 14-photosensitive element, 15-observation light path, 16-beam splitter group, 2-naked eye 3D display, 21-base, 22-connecting rod, 3-illumination unit, 31-light source assembly, 311-LED light source, 32-condenser lens group, 33-aperture, 34-projection lens group, 341-first lens, 35-illumination light path, 4-observation unit, 41-eyepiece, 42-turning lens group, 43-second lens barrel objective, 5-observer, 6-bracket, 61-base, 62-support rod, 63-large cross arm, 64-small cross arm, 65-balance arm. DETAILED DESCRIPTION

[0041] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0042] See also Figures 1 to 10 , Figure 1 A schematic diagram of the structure of a microsurgery assisting device provided in an embodiment of the present application; Figure 2 a and Figure 2 b is a schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application in two states when adjusting the distance between the positive lens group and the negative lens group; Figure 3 A schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application when an observation unit is provided; Figure 4 A schematic diagram of the structure of the microsurgery assisting device provided in an embodiment of the present application when an observation unit is provided; Figure 5 A schematic diagram of the application status of the microsurgery auxiliary device provided in an embodiment of the present application in dental clinics; Figure 6 a and Figure 6 b is a schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application when a dual illumination optical path is provided; Figure 7 A schematic diagram of the optical path principle of the microsurgery assisting device provided in an embodiment of the present application when the projection lens group and the zoom lens group are linked; Figure 8 A schematic diagram of the viewing angle and distance of a naked-eye 3D display of a microsurgery assisting device provided in an embodiment of the present application; Fig. 9 a- Fig. 9 c is a schematic diagram of the structure of the microsurgery assisting device provided in an embodiment of the present application when the naked-eye 3D display is installed on a bracket; Fig.10 a and Fig.10 b is a schematic diagram of the installation of the microsurgery assisting device provided in an embodiment of the present application when the naked-eye 3D display is installed outside the bracket.

[0043] Example

[0044] The present application provides a microsurgery assisting device, which includes a lens body 1 and a naked-eye 3D display 2. The lens body 1 is provided with an imaging unit 10, and the imaging unit 10 includes a large objective lens group 11, a variable magnification lens group 12, a first lens barrel objective lens 13 and a photosensitive element 14. The large objective lens group 11, the variable magnification lens group 12, the first lens barrel objective lens 13 and the photosensitive element 14 are sequentially arranged in the same observation optical path 15. Figure 1 or Figure 2 a and Figure 2 As shown in b.

[0045] The large objective lens group 11 includes 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. The adjustment 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 variable focal length can conveniently change the focal plane position, that is, the working distance of the operation, to cover the required surgical depth. The implementation method is to change the distance between the positive lens group 111 and the negative lens group 112. The adjustment range of the working distance is proportional to the distance range between the positive lens group 111 and the negative lens group 112, such as Figure 2 The positive lens group 111 includes at least two optical lenses of different materials, the negative lens group 112 includes at least two optical lenses of different materials, the negative lens group 112 is close to the 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 the absolute value of the curvature radius of the outer side surface 1121 is smaller than the absolute value of the curvature radius of the inner side surface 1122.

[0046] The present application preferably adopts a binocular observation optical path 15 design, in which a zoom lens group 12, a first barrel objective lens 13 and a photosensitive element 14 are arranged in each observation optical path 15, and the two observation optical paths 15 share a large objective lens group 11. The dual-path zoom lens group 12 realizes observations of different magnifications, and can perform overall and local observations of the affected area. The zoom lens group 12 is preferably an afocal Galilean structure, which can be a step-by-step zoom or a continuous zoom. When the zoom lens group 12 is a continuous zoom structure, it includes at least two groups of second lenses 121, and the second lenses 121 can be driven to move along their respective optical axis directions. The combination of the zoom lens group 12 and the large objective lens with variable focal length enables the microsurgery auxiliary device of the present application to realize convenient observation of tissue structures at different depths at different magnifications.

[0047] The microsurgery auxiliary device of the present application further comprises a support 6, wherein the support 6 comprises a base 61, a support rod 62 vertically mounted on the base 61, a large horizontal arm 63 rotatably mounted on the support rod 62, a small horizontal arm 64 rotatably mounted on the large horizontal arm 63, and a balance arm 65 rotatably mounted on the small horizontal arm 64, wherein the mirror body 1 is mounted on the balance arm 65. Figure 4 or Fig. 9 As shown in a-9c.

[0048] The naked eye 3D display 2 is connected to the photosensitive element 14. The size of the naked eye 3D display 2 is between 12 inches and 16 inches. Figure 8As shown, the viewing distance between the naked eye 3D display and the observer 5 is between 400 and 1200 mm, and the viewing angle range of the naked eye 3D display is not less than 120 degrees, and the preferred viewing angle is not less than 90 degrees. The naked eye 3D display can be fixed in different ways according to different site conditions and usage habits, and the fixing structure is simple and reliable. For example, the naked eye 3D display can be installed on the upper surface of the large horizontal arm 63 and located above the support rod 62, such as Fig. 9 a; it can also be suspended on the lower surface of the large horizontal arm 63, such as Fig. 9 c; it can also be directly mounted on the support rod 62, such as Fig. 9 b. Whether it is installed on the large cross arm 63 or the support rod 62, the naked eye 3D display can be rotatably installed, fixedly installed, or detachably or movably installed. At the same time, the naked eye 3D display 2 can also be not installed on the bracket 6 of the auxiliary device, but can also be placed on the ground through the base 21 and the connecting rod 22, such as Fig.10 a, or suspended from the roof, such as Fig.10 b. The naked-eye 3D display 2 is mounted at one end of the connecting rod 22, and the other end of the connecting rod 22 is movably mounted on the seat 21. The connecting rod 22 can be driven to move relative to the seat 21 along its axis direction or rotate with its axis as the rotating shaft, so that the installation position of the naked-eye 3D display 2 can be adjusted. The naked-eye 3D display is set in the range of 400 to 1200 mm, which is close to the observation distance of commonly used clinical equipment. When the observer 5 switches his sight between the display and other equipment, the human eye does not need to repeatedly focus, saving time and effort. There is no loss of brightness, which reduces visual fatigue. At the same time, the closer observation distance conforms to the approaching habit of the human eye when distinguishing details. The present application adopts a naked-eye 3D display as the naked-eye 3D display 2, so that the observer 5 can directly perform surgical operations by observing the naked-eye 3D display. The overall structure of the device is simple, and there is no need to perform complex data processing on the image, and the system delay is small. In addition, the use of the naked-eye 3D display does not require the observer 5 to face the observation angle directly, and the object to be observed can be clearly observed within a certain observation angle range without adjusting the display direction. Taking dental clinic as an example, the doctor is usually at the six o'clock position. When he needs to temporarily examine or operate on the maxillary molars, he may move to the nine o'clock and three o'clock positions. At this time, he can observe normally without adjusting the angle of the display. Figure 5 shown.

[0049] In a further embodiment, the microsurgery auxiliary device also includes a collection device, a processing device and a driving device. The collection device can be configured to collect the human eye position information of the observer 5, and the processing device can be configured to control the action of the driving device according to the collected human eye position information, and adjust the display angle of the naked eye 3D display 2, so as to realize the naked eye 3D display 2 automatically tracking the eyes of the observer 5 and rotating accordingly to ensure the best viewing angle.

[0050] At least one lighting unit 3 is also provided in the lens body 1. The lighting light 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 light entering the large objective lens group 11 is parallel to the optical axis direction of the large objective lens group 11, which can reduce reflection loss, and can be arranged into a symmetrical double lighting light path 35 to enhance the lighting intensity, compress the lateral volume of the system, and facilitate the balance of the lens body. Figure 6 a and 6b. The lighting unit 3 includes a light source assembly 31, a condenser group 32, an aperture 33 and a projection lens group 34 which are sequentially located in 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, in addition to the white light source, the light source assembly 31 also includes at least one monochromatic light source (for fluorescence mode), which can be switched with the white light source to enter the illumination light path 35. The projection lens group 34 includes at least one first lens 341, and the first lens 341 can be driven to move along its optical axis.

[0051] In a further embodiment, the microsurgery auxiliary device of the present application may further include a transmission device between the projection lens group 34 and the zoom lens group 12 to achieve linkage between the projection lens group 34 and the zoom lens group 12, such as Figure 7 As shown, the transmission device is not directly drawn in the figure, and a broken line schematically represents the linkage relationship between the projection lens group 34 and the zoom lens group 12. When observing at low magnification, the field of view diameter of the object plane imaging is large, and the illumination spot needs to cover the entire object plane field of view at this time, but when switching to high magnification, the object plane field of view diameter decreases rapidly. At this time, the projection lens group 34 of the illumination light path 35 is adjusted accordingly, so that the illumination spot can also be reduced accordingly, reducing the risk of light damage to tissues outside the field of view. At the same time, it is also beneficial to improve the illumination inside the field of view, compensating for the decrease in subjective brightness of the human eye when observing at high magnification.

[0052] In a further embodiment, if necessary, the microsurgery auxiliary device of the present application can also be equipped with an observation unit 4 on the mirror body 1 to achieve traditional visual observation, such as Figure 4 As shown. Figure 3As shown, the observation unit 4 includes an eyepiece 41, a turning lens group 42 (or a prism group) and a second lens barrel objective lens 43. The imaging unit 1 also includes a beam splitter group 16. In the same observation optical path 15, light sequentially passes through the large objective lens group 11 and the variable magnification 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 barrel objective lens 13 to reach the photosensitive element 14, and the other part of the light sequentially passes through the second lens barrel objective lens 43, the turning lens group 42 and the eyepiece 41. In this way, 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 by using the traditional visual observation method, which greatly enhances the operability and adaptability of the microsurgery auxiliary device.

[0053] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0054] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0055] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A microsurgery assisting device, characterized in that: The invention comprises a lens body (1) and a naked-eye 3D display (2); an imaging unit (10) is arranged in the lens body (1); the imaging unit (10) comprises a large objective lens group (11), a variable-magnification lens group (12), a first lens barrel objective lens (13) and a photosensitive element (14); the large objective lens group (11), the variable-magnification lens group (12), the first lens barrel objective lens (13) and the photosensitive element (14) are sequentially located in the same observation optical path (15); the large objective lens group (11) comprises at least one positive lens group (11); 11) 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) is adjustable, the naked eye 3D display (2) is connected to the photosensitive element (14), the distance between the naked eye 3D display (2) and the observer (5) is between 400 and 1200 mm, and the viewing angle range of the naked eye 3D display (2) is not less than 120 degrees; At least one lighting unit (3) is further provided in the lens body (1), and the lighting light 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 light entering the large objective lens group (11) is parallel to the optical axis direction of the large objective lens group (11); The illumination unit (3) comprises a light source assembly (31), a condenser lens group (32), a diaphragm (33) and a projection lens group (34) which are sequentially located in the same illumination light path (35); the light source assembly (31) comprises at least one LED light source (311); 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 an object to be observed; The microsurgery assisting device further comprises a collection device, a processing device and a driving device, wherein the collection device can be configured to collect eye position information of an observer (5), and the processing device can be configured to control the action of the driving device according to the collected eye position information, thereby adjusting the display angle of the naked-eye 3D display (2).

2. The microsurgery assisting device according to claim 1, characterized in that: The positive lens group (111) includes at least two optical lenses made of different materials, the negative lens group (112) 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), both the outer side surface (1121) and the inner side surface (1122) are concave surfaces, and the absolute value of the radius of curvature of the outer side surface (1121) is smaller than the absolute value of the radius of curvature of the inner side surface (1122).

3. The microsurgery assisting 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 microsurgery assisting device according to claim 1, characterized in that: The projection lens group (34) comprises at least one first lens (341), wherein the first lens (341) can be driven to move along its optical axis direction; The variable power lens group (12) is a continuous variable power structure, comprising at least two groups of second lenses (121), wherein the second lenses (121) can be driven to move along respective optical axis directions.

5. The microsurgery assisting device according to claim 4, characterized in that: It also includes a transmission device, through which the projection lens group (34) and the variable magnification lens group (12) are linked.

6. The microsurgery assisting device according to claim 1, characterized in that: It has a binocular observation optical path (15); The microsurgery auxiliary device also includes an observation unit (4), the observation unit (4) includes an eyepiece (41), a turning lens group (42) and a second lens barrel objective lens (43), and the imaging unit (10) also includes a beam splitter group (16). In the same observation optical path (15), light passes through the large objective lens group (11) and the variable magnification lens group (12) in sequence to reach the beam splitter group (16), and the beam splitter group (16) splits the light into two parts, one part of the light passes through the first lens barrel objective lens (13) in sequence to reach the photosensitive element (14), and the other part of the light passes through the second lens barrel objective lens (43), the turning lens group (42) and the eyepiece (41) in sequence.

7. The microsurgery assisting device according to claim 6, characterized in that: It also includes a bracket (6), the bracket (6) including a base (61), a support rod (62) vertically mounted on the base (61), a large horizontal arm (63) rotatably mounted on the support rod (62), a small horizontal arm (64) rotatably mounted on the large horizontal arm (63), and a balance arm (65) rotatably mounted on the small horizontal arm (64), the mirror body (1) and the observation unit (4) are mounted on the balance arm (65); The naked-eye 3D display (2) is mounted on the large horizontal arm (63) or the support rod (62); or the microsurgery auxiliary device further comprises a seat (21) and a connecting rod (22) mounted on the seat (21), the naked-eye 3D display (2) is mounted on one end of the connecting rod (22), and the naked-eye 3D display (2) can be placed on the ground or suspended on the roof through the seat (21) and the connecting rod (22).

8. The microsurgery assisting device according to claim 7, characterized in that: The other end of the connecting rod (22) is movably mounted on the seat body (21); the connecting rod (22) can be driven to move along its axial direction, and / or the connecting rod (22) can be driven to rotate with its axis as the rotation axis.

9. The microsurgery assisting device according to claim 1, characterized in that: The size of the naked-eye 3D display (2) is between 12 and 16 inches.

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