Operating microscope capable of adjusting multi-angle observation visual angle

Abstract

The utility model relates to a multi-angle observation visual angle adjustable operating microscope, which comprises a bracket, a connector, a first rotating component, a connecting component, a second rotating component and a microscope component, and is characterized in that the bracket is fixedly connected with a vertical frame, and the connector is fixedly connected with the bracket; the first rotating assembly comprises a first rotating shell and a first center shaft, the first center shaft is fixedly connected to the support, and the first rotating shell is rotationally connected with the first center shaft; the connecting assembly comprises a connecting shaft and a transverse connecting plate which are fixedly connected, and the connecting shaft is fixedly connected to the first rotating shell; the second rotating assembly comprises a second rotating shell and a second center shaft, the second rotating shell is fixedly connected with the transverse connecting plate, and the second center shaft is rotationally connected with the second rotating shell; the microscope assembly comprises a microscope body, and the microscope body is fixedly connected with the second central shaft through a connecting rod. The method and the device have the effect of improving the flexibility and the accuracy when the observation angle of the microscope is adjusted.

Description

Technical Field

[0001] The utility model relates to the field of microscopes, in particular to a surgical microscope with multi-angle observation viewing angle adjustment. Background Art

[0002] In the medical field, when a doctor uses a surgical microscope to diagnose and treat a patient's teeth, the patient lies flat on his back. The doctor will observe the patient's dental condition from different positions and angles, such as the front, back, left, and right, according to the needs of the operation, and then perform the operation. The oral surgical microscope is usually set above the patient's mouth through a stand, with the objective lens of the microscope pointed to the inside of the mouth, and the doctor observes the inside of the patient's mouth through the eyepiece.

[0003] Every time a dentist diagnoses and treats teeth in different positions in the patient's mouth, the position and angle of the surgical microscope needs to be changed. The doctor needs to constantly adjust his or her observation posture, which can easily cause physical fatigue and discomfort to the doctor himself or herself.

[0004] At present, some surgical microscopes are able to adjust the microscope at multiple angles so that doctors can observe from multiple directions. However, the adjustment operation is not smooth enough, the flexibility is not high, and the adjustment position is not accurate enough. Doctors need to adjust it repeatedly, resulting in a poor experience for doctors when using surgical microscopes. Utility Model Content

[0005] In order to improve the flexibility and accuracy of adjusting the observation angle of the microscope, the present application provides a surgical microscope with multi-angle observation viewing angle adjustment.

[0006] The present application provides a multi-angle observation viewing angle adjustable surgical microscope adopts the following technical solution:

[0007] A multi-angle observation viewing angle adjustable surgical microscope comprises a bracket, a connector, a first rotating assembly, a connecting assembly, a second rotating assembly, and a microscope assembly, wherein the bracket is fixedly connected to a stand, and the connector is fixedly connected to the bracket;

[0008] The first rotating assembly includes a first rotating shell and a first central shaft, the first central shaft is fixedly connected to the bracket, and the first rotating shell is rotatably connected to the first central shaft;

[0009] The connecting assembly comprises a connecting shaft and a cross-connecting plate which are fixedly connected, and the connecting shaft is fixedly connected to the first rotating housing;

[0010] The second rotating assembly comprises a second rotating shell and a second central shaft, the second rotating shell is fixedly connected to the cross-connecting plate, and the second central shaft is rotatably connected to the second rotating shell;

[0011] The microscope assembly includes a microscope body, an eyepiece observation assembly, a handle, and an objective lens. The microscope body is fixedly connected to the second central axis through a connecting rod. The eyepiece observation assembly, the handle, and the objective lens are all installed on the microscope body. The eyepiece observation assembly and the objective lens are used in combination.

[0012] Preferably, the first rotating assembly also includes a first adjusting worm, a first worm gear housing, and a first scroll spring. The first worm gear housing is located in the first rotating housing and is rotatably connected to the first rotating housing. The first worm gear housing is sleeved on the first center axis and is rotatably connected to the first center axis. The first adjusting worm penetrates into the first rotating housing along the radial direction of the first rotating housing. The first adjusting worm cooperates with the first worm gear housing in transmission. One end of the first scroll spring is fixed to the first center axis, and the other end of the first scroll spring is fixed to the first worm gear housing.

[0013] Preferably, a first bearing is provided between the first central shaft and the first rotating shell, an outer ring of the first bearing is fixed to the first rotating shell, and an inner ring of the first bearing is fixed to the first central shaft.

[0014] Preferably, a second bearing is provided between the first central shaft and the first worm gear housing, an outer ring of the second bearing is fixed to the first worm gear housing, and an inner ring of the second bearing is fixed to the first central shaft.

[0015] Preferably, the second rotating assembly also includes a second adjusting worm, a second worm gear housing, and a second scroll spring. The second worm gear housing is located in the second rotating housing and is rotatably connected to the second rotating housing. The second worm gear housing is sleeved on the second center axis and is rotatably connected to the second center axis. The second adjusting worm penetrates into the second rotating housing along the radial direction of the second rotating housing. The second adjusting worm cooperates with the second worm gear housing. One end of the second scroll spring is fixed to the second center axis, and the other end of the second scroll spring is fixed to the second worm gear housing.

[0016] Preferably, a third bearing is provided between the second central shaft and the second rotating shell, the outer ring of the third bearing is fixed to the second rotating shell, and the inner ring of the third bearing is fixed to the second central shaft.

[0017] Preferably, a fourth bearing is provided between the second central shaft and the second worm gear housing, the outer ring of the fourth bearing is fixed to the second worm gear housing, and the inner ring of the fourth bearing is fixed to the second central shaft.

[0018] Preferably, two first volute springs are arranged along the axial direction of the first central axis, and the tightening directions of the two first volute springs are opposite;

[0019] Two second volute springs are arranged along the axial direction of the second central axis, and the tightening directions of the two second volute springs are opposite.

[0020] Preferably, the pitches between the two first volute springs are filled with high-viscosity damping grease;

[0021] The space between the pitches of the two second volute springs is also filled with high-viscosity damping grease.

[0022] Preferably, a first fixing groove for clamping one end of the first volute spring is formed on the outer peripheral wall of the first central shaft, and a first mounting groove for clamping the other end of the first volute spring is formed on the peripheral side wall of the first worm gear housing, and the first mounting groove passes through the side wall of the first worm gear housing;

[0023] A second fixing groove for clamping one end of the second volute spring is formed on the outer peripheral wall of the second center shaft, and a second installation groove for clamping the other end of the second volute spring is formed on the peripheral side wall of the second worm gear housing, and the second installation groove passes through the side wall of the second worm gear housing.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. When the operator needs to adjust the field of view observation angle to the left and right, he slowly rotates the first adjusting worm until the desired position is observed through the eyepiece observation assembly. The first adjusting worm drives the first worm gear housing to rotate with the first central axis as the axis. After the first volute spring is tightened, the remaining elastic potential energy is converted into torsion. Since the end of the first volute spring fixed to the first central axis cannot move, the elastic force generated by the first volute spring reacts on the first worm gear housing in time, so that the left and right rotation of the microscope assembly has follow-up and reliability. Since the first worm gear housing and the first adjusting worm are self-locking, the first worm gear housing transmits the elastic force to the first adjusting worm and causes the first adjusting worm to rotate with the first central axis as the axis. Since the first adjusting worm is inserted into the first rotating housing along the radial direction of the first rotating housing, the first adjusting worm drives the first rotating housing to rotate with the first central axis as the axis, and drives the second rotating assembly and the microscope assembly to rotate left and right around the first central axis as a whole.

[0026] During this process, the first volute spring generates torsion in the plane, and the magnitude of the torque is proportional to the deformation angle. The gravity of the microscope assembly and the second rotating assembly is held against the elastic torsion of the first volute spring. The elastic torsion generated by the first volute spring supports the overall gravity of the microscope assembly and the second rotating assembly. The microscope assembly and the second rotating assembly can remain stable at the current position without falling, reducing the safety hazard caused by the lens falling. The microscope assembly can rotate left and right more stably. Since the output torque of the first volute spring is linear, the rotation accuracy of the microscope assembly is guaranteed. At the same time, with the action of the first bearing and the second bearing, the flexibility of the left and right field of view adjustment is improved. In summary, the flexibility and accuracy of the microscope observation angle adjustment are improved, and the picture jitter is small and the rotation adjustment is smooth.

[0027] 2. When the operator needs to adjust the viewing angle of the field of view by pitching and rotating, the operator slowly rotates the second adjusting worm until the desired position is observed through the eyepiece observation assembly. The second adjusting worm drives the second worm gear housing to rotate around the second central axis. After the second volute spring is tightened, the remaining elastic potential energy is converted into torsion. Since the end of the second volute spring fixed to the second central axis can move, the elastic force generated by the second volute spring reacts on the second central axis in time, driving the microscope assembly to pitch and rotate around the second central axis, so that the pitch and rotation of the microscope assembly has good follow-up and reliability.

[0028] During this process, the second scroll spring generates torsion in the plane, and the magnitude of the torque is proportional to the deformation angle. The gravity of the microscope assembly is held against the elastic torsion of the second scroll spring. The elastic torsion generated by the second scroll spring supports the gravity of the microscope assembly. The microscope assembly can remain in the current position without falling and remain stable, reducing the safety hazard caused by the lens falling. The microscope assembly can pitch and rotate more stably. Since the output torque of the second scroll spring is linear, the rotation accuracy of the microscope assembly is guaranteed. At the same time, with the action of the third bearing and the fourth bearing, the flexibility of the pitch field of view adjustment is improved. In summary, the flexibility and accuracy of the microscope observation angle adjustment are improved, and the picture jitter is small and the rotation adjustment is smooth.

[0029] 3. Two first volute springs with opposite tightening directions ensure that the elastic torsion force applied by the first volute spring to the first worm gear housing is consistent when the first adjusting worm rotates forward or reversely;

[0030] The two second volute springs with opposite tightening directions ensure that the elastic torsion forces applied by the second volute springs to the second central axis are consistent when the second adjusting worm rotates forward or reversely. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the front side of a surgical microscope with multi-angle observation viewing angle adjustment in an embodiment of the present application.

[0032] Figure 2 It is a schematic diagram of the overall structure of the back of a surgical microscope with multi-angle observation viewing angle adjustment in an embodiment of the present application.

[0033] Figure 3 It is a schematic cross-sectional structure diagram for illustrating the first rotating component in the embodiment of the present application.

[0034] Figure 4 It is a schematic diagram of the cross-sectional structure used to show the first fixing groove and the first installation groove in the embodiment of the present application.

[0035] Figure 5 It is a schematic cross-sectional structure diagram for illustrating the second rotating component in the embodiment of the present application.

[0036] Figure 6 It is a schematic diagram of the cross-sectional structure used to show the second fixing groove and the second installation groove in the embodiment of the present application.

[0037] Explanation of the reference numerals: 1. bracket; 2. connector; 3. first rotating assembly; 31. first rotating housing; 311. first accommodating ring groove; 312. first giving way ring groove; 32. first central axis; 321. first fixing groove; 322. first limiting ring edge; 323. first limiting step; 33. first adjusting worm; 34. first worm gear housing; 341. first mounting groove; 342. first positioning ring edge; 35. first scroll spring; 36. first housing end cover; 37. first bearing; 38. second bearing; 381. first pressure ring; 382. first locking ring; 4. connecting assembly; 41. connecting shaft; 42. cross connecting plate; 5. second rotating assembly Parts; 51, second rotating shell; 511, extension rod; 512, second accommodating ring groove; 513, second yielding ring groove; 52, second central axis; 521, second fixing groove; 522, second limiting ring edge; 523, second limiting step; 53, second adjusting worm; 54, second worm gear shell; 541, second mounting groove; 542, second positioning ring edge; 55, second volute spring; 56, second shell end cover; 57, third bearing; 58, fourth bearing; 581, second pressure ring; 582, second locking ring; 6, microscope assembly; 61, microscope body; 611, connecting rod; 62, eyepiece observation assembly; 63, handle; 64, objective lens. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] The embodiment of the present application discloses a surgical microscope with multi-angle observation viewing angle adjustment.

[0040] Reference Figure 1 , Figure 2 The multi-angle observation viewing angle adjustment surgical microscope comprises a bracket 1, a connector 2, a first rotating assembly 3, a connecting assembly 4, a second rotating assembly 5, and a microscope assembly 6. In this embodiment, the swing range of the first rotating assembly 3 is -60°~+60°, and the swing range of the second rotating assembly 5 is -45°~+60°.

[0041] The bracket 1 is fixedly connected to a stand of a working environment, and the connector 2 is fixedly connected to the bracket 1 .

[0042] Reference Figure 3 The first rotating assembly 3 includes a first rotating housing 31, a first central axis 32, a first adjusting worm 33, a first worm gear housing 34, a first volute spring 35, and a first housing end cover 36. The first central axis 32 is fixedly connected to the bracket 1, and the first rotating housing 31 is rotatably connected to the first central axis 32. The first worm gear housing 34 is located in the first rotating housing 31 and is rotatably connected to the first rotating housing 31. The first worm gear housing 34 is sleeved on the first central axis 32 and is rotatably connected to the first central axis 32. The first adjusting worm 33 penetrates into the first rotating housing 31 along the radial direction of the first rotating housing 31. The first adjusting worm 33 is in transmission cooperation with the first worm gear housing 34. One end of the first volute spring 35 is fixed to the first central axis 32, and the other end of the first volute spring 35 is fixed to the first worm gear housing 34.

[0043] Reference Figure 4 The outer peripheral wall of the first central shaft 32 is provided with a first fixing groove 321 for clamping one end of the first spiral spring 35, and the peripheral side wall of the first worm gear housing 34 is provided with a first installation groove 341 for clamping the other end of the first spiral spring 35, and the first installation groove 341 penetrates the side wall of the first worm gear housing 34. One end of the first spiral spring 35 is clamped in the first fixing groove 321 of the first central shaft 32, and the other end of the first spiral spring 35 is clamped in the first installation groove 341 of the first worm gear housing 34, so the installation operation is convenient.

[0044] The first housing end cover 36 is threadedly connected to the first rotating housing 31 , and the first housing end cover 36 is rotatably connected to the first central shaft 32 .

[0045] Reference Figure 3 , Figure 4 A first bearing 37 is provided between the first central shaft 32 and the first rotating shell 31 , the outer ring of the first bearing 37 is fixed to the first rotating shell 31 , and the inner ring of the first bearing 37 is fixed to the first central shaft 32 , so that the first central shaft 32 and the first rotating shell 31 can rotate smoothly.

[0046] A first accommodating ring groove 311 for installing the first bearing 37 is provided on the inner top wall of the first rotating outer shell 31. The depth of the first accommodating ring groove 311 is adapted to the axial length of the first bearing 37. A first giving way ring groove 312 for giving way to the inner ring of the first bearing 37 is provided on the inner top wall of the first accommodating ring groove 311. Both the first accommodating ring groove 311 and the first giving way ring groove 312 penetrate the inner circumferential wall of the first rotating outer shell 31. The inner top wall of the first accommodating ring groove 311 abuts against the outer ring of the first bearing 37.

[0047] A first limiting ring edge 322 is coaxially arranged on the peripheral side wall of the first central axis 32. The first limiting ring edge 322 does not contact the inner wall of the first rotating shell 31. The first limiting ring edge 322 abuts against the inner ring of the first bearing 37. The inner wall of the first accommodating ring groove 311 cooperates with the first limiting ring edge 322 to press the first bearing 37.

[0048] A second bearing 38 is arranged between the first center shaft 32 and the first worm gear housing 34. The outer ring of the second bearing 38 is fixed to the first worm gear housing 34 by a first pressure ring 381, and the inner ring of the second bearing 38 is fixed to the first center shaft 32 by a first locking ring 382, ​​so that the first center shaft 32 and the first worm gear housing 34 can rotate smoothly.

[0049] The first pressing ring 381 is fixed to the first worm gear housing 34 by bolts. A circle of first positioning ring edge 342 is coaxially arranged on the inner peripheral wall at the top of the first worm gear housing 34 . The first pressing ring 381 presses the outer ring of the second bearing 38 against the first positioning ring edge 342 .

[0050] The first locking ring 382 is fixed to the first central shaft 32 by bolts. A circle of first limiting steps 323 is coaxially arranged on the outer peripheral wall of the first central shaft 32 . The first locking ring 382 presses the inner ring of the second bearing 38 against the first limiting step 323 .

[0051] Two first volute springs 35 are arranged along the axial direction of the first central axis 32. The tightening directions of the two first volute springs 35 are opposite to each other, ensuring that when the first adjusting worm 33 rotates forward or reversely, the elastic torsion force applied by the first volute spring 35 to the first worm gear housing 34 is consistent. Among the two first volute springs 35, the tightened first volute spring 35 has elastic force and can apply a reaction force to the first worm gear housing 34, and the expanded first volute spring 35 does not have sufficient elastic force and cannot apply a reaction force to the first worm gear housing 34.

[0052] The space between the pitches of the two first volute springs 35 is filled with high-viscosity damping grease to ensure that the elastic torque generated by the first volute springs 35 outputs linear feedback.

[0053] Reference Figure 1 , Figure 2The connecting assembly 4 includes a connecting shaft 41 and a cross-connecting plate 42 that are fixedly connected. The connecting shaft 41 and the cross-connecting plate 42 are connected in an L-shape. The connecting shaft 41 is fixedly connected to the first rotating housing 31 .

[0054] Reference Figure 5 The second rotating assembly 5 includes a second rotating housing 51, a second central axis 52, a second adjusting worm 53, a second worm gear housing 54, a second volute spring 55, and a second housing end cover 56. An extension rod 511 is integrally formed at one end of the second rotating housing 51 close to the cross-connecting plate 42. The second rotating housing 51 is fixedly connected to the cross-connecting plate 42 through the extension rod 511. The second central axis 52 is rotatably connected to the second rotating housing 51. The second worm gear housing 54 is located in the second rotating housing 51 and is rotatably connected to the second rotating housing 51. The second worm gear housing 54 is sleeved on the second central axis 52 and is rotatably connected to the second central axis 52. The second adjusting worm 53 penetrates into the second rotating housing 51 along the radial direction of the second rotating housing 51. The second adjusting worm 53 is in transmission cooperation with the second worm gear housing 54. One end of the second volute spring 55 is fixed to the second central axis 52, and the other end of the second volute spring 55 is fixed to the second worm gear housing 54.

[0055] Reference Figure 6 The outer peripheral wall of the second central shaft 52 is provided with a second fixing groove 521 for clamping one end of the second volute spring 55, and the peripheral side wall of the second worm gear housing 54 is provided with a second installation groove 541 for clamping the other end of the second volute spring 55, and the second installation groove 541 penetrates the side wall of the second worm gear housing 54. One end of the second volute spring 55 is clamped in the second fixing groove 521 of the second central shaft 52, and the other end of the second volute spring 55 is clamped in the second installation groove 541 of the second worm gear housing 54, so the installation operation is convenient.

[0056] The second housing end cover 56 is threadedly connected to the second rotating housing 51 , and the second housing end cover 56 is rotatably connected to the second central shaft 52 .

[0057] Reference Figure 5 , Figure 6 A third bearing 57 is provided between the second central shaft 52 and the second rotating shell 51. The outer ring of the third bearing 57 is fixed to the second rotating shell 51, and the inner ring of the third bearing 57 is fixed to the second central shaft 52, so that the second central shaft 52 and the second rotating shell 51 can rotate smoothly.

[0058] A second accommodating ring groove 512 for installing the third bearing 57 is provided on the inner top wall of the second rotating outer shell 51. The depth of the second accommodating ring groove 512 is adapted to the axial length of the third bearing 57. A second yielding ring groove 513 for yielding the inner ring of the third bearing 57 is provided on the inner top wall of the second accommodating ring groove 512. Both the second accommodating ring groove 512 and the second yielding ring groove 513 penetrate the inner circumferential wall of the second rotating outer shell 51. The inner top wall of the second accommodating ring groove 512 abuts against the outer ring of the third bearing 57.

[0059] A second limiting ring edge 522 is coaxially arranged on the peripheral side wall of the second central axis 52. The second limiting ring edge 522 does not contact the inner wall of the second rotating shell 51. The second limiting ring edge 522 abuts against the inner ring of the third bearing 57. The inner wall of the second accommodating ring groove 512 cooperates with the second limiting ring edge 522 to press the second bearing 38.

[0060] A fourth bearing 58 is arranged between the second center shaft 52 and the second worm gear housing 54. The outer ring of the fourth bearing 58 is fixed to the second worm gear housing 54 by a second pressure ring 581, and the inner ring of the fourth bearing 58 is fixed to the second center shaft 52 by a second locking ring 582, so that the second center shaft 52 and the second worm gear housing 54 can rotate smoothly.

[0061] The second pressing ring 581 is fixed to the second worm gear housing 54 by bolts. A circle of second positioning ring edge 542 is coaxially arranged on the inner peripheral wall at the top of the second worm gear housing 54. The second pressing ring 581 presses the outer ring of the fourth bearing 58 against the second positioning ring edge 542.

[0062] The second locking ring 582 is fixed to the second central shaft 52 by bolts. A circle of second limiting steps 523 is coaxially arranged on the outer peripheral wall of the second central shaft 52 . The second locking ring 582 presses the inner ring of the fourth bearing 58 against the second limiting steps 523 .

[0063] Two second volute springs 55 are arranged along the axial direction of the second center axis 52. The tightening directions of the two second volute springs 55 are opposite to each other, ensuring that when the second adjusting worm 53 rotates forward or reversely, the elastic torsion force applied by the second volute spring 55 to the second center axis 52 is consistent. Among the two second volute springs 55, the tightened second volute spring 55 has elastic force and can apply a reaction force to the second center axis 52, while the expanded second volute spring 55 does not have sufficient elastic force and cannot apply a reaction force to the second center axis 52.

[0064] The space between the two second volute springs 55 is also filled with high-viscosity damping grease to ensure that the elastic torque generated by the second volute springs 55 outputs linear feedback.

[0065] The first volute spring 35 and the second volute spring 55 are both volute springs made of SUS301-3 / 4H stainless steel. The first volute spring 35 and the second volute spring 55 in this embodiment are both planar non-contact outer end rotary volute springs, which are springs with one end fixed and the other end acting with torque. Under the action of torque, the spring material produces bending elastic deformation, causing the spring to twist in the plane, and the size of the deformation angle is proportional to the torque, and the elastic change of the spring is linear. In this way, when the first adjusting worm 33 and the second adjusting worm 53 rotate, the first rotating component 3 and the second rotating component 5 rotate linearly, and the microscope component 6 also rotates linearly, and the microscope screen has little jitter and the rotation is easy to adjust.

[0066] Reference Figure 1 , Figure 2 The microscope assembly 6 includes a microscope body 61, an eyepiece observation assembly 62, a handle 63, and an objective lens 64. The microscope body 61 is fixedly connected to the second central axis 52 through a connecting rod 611. The eyepiece observation assembly 62, the handle 63, and the objective lens 64 are all installed on the microscope body 61. The eyepiece observation assembly 62 and the objective lens 64 are used together to observe the patient's oral cavity.

[0067] The implementation principle of a multi-angle observation viewing angle adjustable surgical microscope in the present application embodiment is as follows:

[0068] When the operator needs to adjust the viewing angle left and right, he slowly rotates the first adjusting worm 33 until the desired position is observed through the eyepiece observation assembly 62. The first adjusting worm 33 drives the first worm gear housing 34 to rotate around the first central axis 32. After the first volute spring 35 is tightened, the remaining elastic potential energy is converted into a torsion force. Since the end of the first volute spring 35 fixed to the first central axis 32 cannot move, the elastic force generated by the first volute spring 35 reacts on the first worm gear housing 34 in time, so that the microscope assembly 6 The left and right rotation has good follow-up and reliability. Since the first worm gear housing 34 and the first adjusting worm 33 are self-locking, the first worm gear housing 34 transmits elastic force to the first adjusting worm 33 and makes the first adjusting worm 33 rotate around the first central axis 32. Since the first adjusting worm 33 is inserted into the first rotating housing 31 along the radial direction of the first rotating housing 31, the first adjusting worm 33 drives the first rotating housing 31 to rotate around the first central axis 32, and drives the second rotating assembly 5 and the microscope assembly 6 to rotate left and right around the first central axis 32 as a whole.

[0069] During this process, the first volute spring 35 generates torsion in the plane, and the magnitude of the torque is proportional to the deformation angle. The gravity of the microscope assembly 6 and the second rotating assembly 5 is held against the elastic torque of the first volute spring 35. The elastic torque generated by the first volute spring 35 supports the overall gravity of the microscope assembly 6 and the second rotating assembly 5. The microscope assembly 6 and the second rotating assembly 5 can remain in the current position without falling and remain stable, reducing the safety hazard caused by the lens falling. The microscope assembly 6 can rotate left and right more stably. Since the output torque of the first volute spring 35 is linear, the rotation accuracy of the microscope assembly 6 is guaranteed. At the same time, with the action of the first bearing 37 and the second bearing 38, the flexibility of the left and right field of view adjustment is improved. In summary, the flexibility and accuracy of the microscope observation angle adjustment are improved, and the picture jitter is small and the rotation adjustment is free.

[0070] When the operator needs to adjust the viewing angle by pitching, he slowly rotates the second adjusting worm 53 until the desired position is observed through the eyepiece observation assembly 62. The second adjusting worm 53 drives the second worm gear housing 54 to rotate around the second central axis 52. After the second volute spring 55 is tightened, the remaining elastic potential energy is converted into torsion. Since the end of the second volute spring 55 fixed to the second central axis 52 can move, the elastic force generated by the second volute spring 55 reacts on the second central axis 52 in time, driving the microscope assembly 6 to pitch around the second central axis 52, so that the pitch rotation of the microscope assembly 6 has good follow-up and reliability.

[0071] During this process, the second volute spring 55 generates torsion in the plane, and the magnitude of the torque is proportional to the deformation angle. The gravity of the microscope assembly 6 is held against the elastic torque of the second volute spring 55. The elastic torque generated by the second volute spring 55 supports the gravity of the microscope assembly 6. The microscope assembly 6 can remain in the current position without falling and remain stable, reducing the safety hazard caused by the lens falling. The microscope assembly 6 can pitch and rotate more stably. Since the output torque of the second volute spring 55 is linear, the rotation accuracy of the microscope assembly 6 is guaranteed. At the same time, with the action of the third bearing 57 and the fourth bearing 58, the flexibility of the pitch field of view adjustment is improved. In summary, the flexibility and accuracy of the microscope observation angle adjustment are improved, and the picture jitter is small and the rotation adjustment is free.

[0072] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A surgical microscope with multi-angle viewing angle adjustment. Features: It comprises a support (1), a connector (2), a first rotating assembly (3), a connecting assembly (4), a second rotating assembly (5), and a microscope assembly (6), wherein the support (1) is fixedly connected to the stand, and the connector (2) is fixedly connected to the support (1); The first rotating assembly (3) comprises a first rotating shell (31) and a first central shaft (32), wherein the first central shaft (32) is fixedly connected to the bracket (1), and the first rotating shell (31) is rotatably connected to the first central shaft (32); The connecting assembly (4) comprises a fixedly connected connecting shaft (41) and a transverse connecting plate (42), wherein the connecting shaft (41) is fixedly connected to the first rotating housing (31); The second rotating assembly (5) comprises a second rotating shell (51) and a second central shaft (52), the second rotating shell (51) is fixedly connected to the cross-connecting plate (42), and the second central shaft (52) is rotatably connected to the second rotating shell (51); The microscope assembly (6) comprises a microscope body (61), an eyepiece observation assembly (62), a handle (63), and an objective lens (64); the microscope body (61) is fixedly connected to the second central axis (52) via a connecting rod (611); the eyepiece observation assembly (62), the handle (63), and the objective lens (64) are all mounted on the microscope body (61); and the eyepiece observation assembly (62) and the objective lens (64) are used in conjunction with each other.

2. The multi-angle observation viewing angle adjustable surgical microscope according to claim 1, Features: The first rotating assembly (3) further comprises a first adjusting worm (33), a first worm gear housing (34), and a first volute spring (35); the first worm gear housing (34) is located in the first rotating housing (31) and is rotatably connected to the first rotating housing (31); the first worm gear housing (34) is sleeved on the first central shaft (32) and is rotatably connected to the first central shaft (32); the first adjusting worm (33) penetrates into the first rotating housing (31) along the radial direction of the first rotating housing (31); the first adjusting worm (33) and the first worm gear housing (34) are transmission-coordinated; one end of the first volute spring (35) is fixed to the first central shaft (32); and the other end of the first volute spring (35) is fixed to the first worm gear housing (34).

3. The multi-angle observation viewing angle adjustable surgical microscope according to claim 2, Features: A first bearing (37) is provided between the first central shaft (32) and the first rotating shell (31); an outer ring of the first bearing (37) is fixed to the first rotating shell (31); and an inner ring of the first bearing (37) is fixed to the first central shaft (32).

4. The multi-angle observation viewing angle adjustable surgical microscope according to claim 2, Features: A second bearing (38) is provided between the first central shaft (32) and the first worm gear housing (34); an outer ring of the second bearing (38) is fixed to the first worm gear housing (34); and an inner ring of the second bearing (38) is fixed to the first central shaft (32).

5. The multi-angle observation viewing angle adjustable surgical microscope according to claim 2, Features: The second rotating assembly (5) further comprises a second adjusting worm (53), a second worm gear housing (54), and a second volute spring (55); the second worm gear housing (54) is located in the second rotating housing (51) and is rotatably connected to the second rotating housing (51); the second worm gear housing (54) is sleeved on the second central shaft (52) and is rotatably connected to the second central shaft (52); the second adjusting worm (53) penetrates into the second rotating housing (51) along the radial direction of the second rotating housing (51); the second adjusting worm (53) and the second worm gear housing (54) are transmission-coordinated; one end of the second volute spring (55) is fixed to the second central shaft (52); and the other end of the second volute spring (55) is fixed to the second worm gear housing (54).

6. The multi-angle observation viewing angle adjustable surgical microscope according to claim 5, Features: A third bearing (57) is provided between the second central shaft (52) and the second rotating shell (51); an outer ring of the third bearing (57) is fixed to the second rotating shell (51); and an inner ring of the third bearing (57) is fixed to the second central shaft (52).

7. The multi-angle observation viewing angle adjustable surgical microscope according to claim 5, Features: A fourth bearing (58) is provided between the second central shaft (52) and the second worm gear housing (54); an outer ring of the fourth bearing (58) is fixed to the second worm gear housing (54); and an inner ring of the fourth bearing (58) is fixed to the second central shaft (52).

8. The multi-angle observation viewing angle adjustable surgical microscope according to claim 5, Features: Two first volute springs (35) are arranged along the axial direction of the first central axis (32), and the tightening directions of the two first volute springs (35) are opposite; Two second volute springs (55) are arranged along the axial direction of the second central axis (52), and the tightening directions of the two second volute springs (55) are opposite.

9. The multi-angle observation viewing angle adjustable surgical microscope according to claim 8, Features: The pitches between the two first volute springs (35) are fully coated with high-viscosity damping grease; The space between the pitches of the two second volute springs (55) is also filled with high-viscosity damping grease.

10. The multi-angle observation viewing angle adjustable surgical microscope according to claim 5, Features: A first fixing groove (321) for clamping one end of the first volute spring (35) is formed on the outer peripheral wall of the first central shaft (32), and a first mounting groove (341) for clamping the other end of the first volute spring (35) is formed on the peripheral side wall of the first worm gear housing (34), and the first mounting groove (341) passes through the side wall of the first worm gear housing (34); A second fixing groove (521) for clamping one end of the second spiral spring (55) is provided on the outer peripheral wall of the second central axis (52), and a second mounting groove (541) for clamping the other end of the second spiral spring (55) is provided on the peripheral side wall of the second worm gear housing (54), and the second mounting groove (541) passes through the side wall of the second worm gear housing (54).

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