Mechanism for adjusting illumination light spot of operating microscope

Abstract

The utility model relates to a mechanism for adjusting illumination light spots of an operating microscope, which comprises an illumination light path and an adjustable diaphragm which are coaxially arranged, and further comprises a mounting cylinder, a worm gear block body and a worm, the illumination light path and the adjustable diaphragm are fixedly arranged in an inner cavity of the mounting cylinder, the worm gear block body is in transmission connection with the worm, and the worm gear block body is in transmission connection with the worm. The worm gear block body is arranged on the periphery of a cylinder body of the installation cylinder in a sleeving mode, and transmission connection between the worm gear block body and the adjustable diaphragm is achieved through a deflector rod. The device is reasonable in structure, a doctor can easily, independently and accurately adjust the size of a light spot during an operation, and therefore a clear and amplified operation view is provided for the doctor. And the operation of doctors is more accurate and meticulous.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical microscopes, in particular to an adjustment mechanism for changing the size of an illumination spot of a surgical microscope. Background Art

[0002] The oral surgical microscope is a special microscope designed for clinical dentistry. With the continuous development of microscopy technology, the oral surgical microscope has been widely used in the diagnosis and treatment of dental pulp diseases. It provides magnification and illumination for the surgical operation area, thus providing doctors with a clear and magnified surgical field of view. It enables doctors to operate more accurately and meticulously. At the same time, it can make the operation more precise, the wound smaller, the soft tissue damage less, the suture better, shorten the healing period, and reduce the postoperative pain of patients caused by oral treatment.

[0003] Doctors often need to reduce the range of illumination of the surgical surface during actual surgical operations in order to increase the contrast between the surgical operation area and the surrounding environment, thereby making the field of view clearer and the operation more precise. This requires that the light spot adjustment needs to be convenient, simple and easy to operate, and must meet the doctor's actual body position requirements during the operation.

[0004] The structure for adjusting the light spot on most existing surgical microscopes is located far away from the doctor and outside the doctor's normal field of view. When doctors want to adjust the size of the lighting spot during surgery, they have to grope blindly with their hands. It is easy to touch and misadjust other mechanisms by mistake, causing bacteria to be contaminated on the hands and contaminating the outer surface of the microscope, which is not conducive to the control of hospital infection. At the same time, uncontrollable groping and adjustment can easily cause the microscope body to shake, causing the doctor to lose the magnified field of view and affect the operation. Moreover, the light spot size cannot be adjusted continuously, and there are only a few sizes to choose from. When switching between light spots of different sizes, a black obstruction area will appear in the magnified field of view, and the magnified field of view will become discontinuous, affecting the doctor's operation and observation, and reducing efficiency. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a mechanism for adjusting the illumination spot of a surgical microscope, which is convenient for easily, independently and accurately adjusting the size of the light spot, including an illumination light path and an adjustable aperture, the illumination light path and the adjustable aperture are coaxially arranged, and also include a mounting tube, a worm gear block and a worm, the illumination light path and the adjustable aperture are fixedly installed in the inner cavity of the mounting tube, the worm gear block is connected with the worm gear in a transmission manner, the worm gear block is set on the outer periphery of the mounting tube, and the worm gear block and the adjustable aperture are connected in a transmission manner through a lever.

[0006] Preferably, the adjustable iris includes an adjustable iris adjustment ring and an adjustable iris outer ring, the adjustable iris adjustment ring is rotatably arranged inside the ring body of the adjustable iris outer ring, and the adjustable iris is fixedly arranged in the inner cavity of the mounting tube through an interference fit between the adjustable iris outer ring and the inner cavity wall of the mounting tube.

[0007] Preferably, the ring body of the outer ring of the adjustable iris is provided with an adjustable iris tube yield groove along the circumferential direction, the ring body of the adjustable iris adjustment ring is provided with an adjustable iris adjustment screw hole, and the body of the mounting tube is provided with a mounting tube yield groove along the circumferential direction. The adjustable iris tube yield groove matches the mounting tube yield groove in structure and size, and when fixedly arranged in the inner cavity of the mounting tube, the adjustable iris tube yield groove overlaps with the mounting tube yield groove up and down, one end of the lever passes through the adjustable iris tube yield groove and the mounting tube yield groove, and is fixedly arranged in the adjustable iris adjustment screw hole with threaded cooperation, the body of the worm gear block is provided with a worm gear upper circular hole, and the other end of the lever is exposed from the worm gear upper circular hole, that is, when the worm gear block rotates circumferentially, the adjustable iris adjustment ring can be driven to rotate synchronously through the lever, and circumferential direction limitation is achieved through the adjustable iris tube yield groove and the mounting tube yield groove.

[0008] Preferably, there is also a U-shaped shell that matches the worm, the supporting sleeve is fixedly arranged on the U-shaped shell, the shaft of the worm passes through the supporting sleeve, and the worm is rotatably arranged on the U-shaped shell through the supporting sleeve, one end of the worm is exposed from the U-shaped shell and is fixedly connected to the adjusting knob, a supporting seat is fixedly arranged on the U-shaped shell, the other end of the worm passes through the supporting seat, the other end of the worm is provided with a worm limiting groove that matches the supporting seat, the supporting seat is provided with a supporting seat screw hole, the fixing screw is threadedly installed on the supporting seat through the supporting seat screw hole, and the end of the fixing screw is limitedly matched with the supporting seat screw hole.

[0009] Preferably, the illumination optical path, the adjustable aperture, the mounting tube and the worm gear block are coaxially arranged.

[0010] By means of the above solution, the utility model has at least the following advantages:

[0011] 1. The size of the light spot can be adjusted independently, which greatly increases the doctor's freedom of operation. It can meet the doctor's multiple free choices during different surgical operations and realize the arbitrary adjustment of the light spot size.

[0012] 2. The doctor can adjust the spot size accurately and easily. Without leaving the magnified field of view, the doctor can directly and freely adjust the spot size according to the operation needs, making the operation more coherent, the operation more precise, and improving the efficiency of the operation.

[0013] 3. The spot size can be kept stably at the required position and will not be affected by other operations and cause changes in the spot size.

[0014] 4. The spot size is continuously adjustable. Doctors can choose the most appropriate spot range according to their needs. When adjusting the spot size, there will be no black obstruction in the doctor's magnified field of view, which ensures the continuity of the magnified field of view and improves operational efficiency.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings required for use in the embodiment will be briefly introduced below. It should be understood that the following drawings only show a certain embodiment of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of a mechanism for adjusting the illumination spot of a surgical microscope of the present application;

[0018] Figure 2 It is a schematic diagram of the structural relationship between the illumination optical path, adjustable aperture, mounting tube, worm gear block and worm of the present application;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure between the illumination optical path, the adjustable aperture, the mounting tube, the worm gear block and the worm of the present application;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the adjustable diaphragm of the present application;

[0021] Figure 5 It is a schematic diagram of the structural relationship between the adjustable diaphragm and the mounting tube of the present application;

[0022] Figure 6 It is a schematic diagram of the structural relationship between the mounting cylinder and the worm gear block of the present application;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the worm gear block of the present application;

[0024] Figure 8 It is a schematic diagram of the structural relationship between the worm and the set screw of the present application.

[0025] In the figure: 1 illumination light path, 2 adjustable iris, 3 mounting tube, 4 worm wheel block, 5 worm, 6 lever, 7 adjustable iris adjustment ring, 8 adjustable iris outer ring, 9 adjustable iris tube clearance groove, 10 adjustable iris adjustment screw hole, 11 mounting tube clearance groove, 12 U-shaped shell, 13 support sleeve, 14 adjustment knob, 15 support seat, 16 worm wheel upper round hole, 17 worm limit groove, 18 support seat screw hole, 19 set screw. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] See also Figures 1 to 8 A mechanism for adjusting the illumination spot of a surgical microscope described in a preferred embodiment of the utility model includes an illumination optical path 1 and an adjustable aperture 2, the illumination optical path 1 and the adjustable aperture 2 are coaxially arranged, and also includes a mounting tube 3, a worm gear block 4 and a worm 5, the illumination optical path 1 and the adjustable aperture 2 are fixedly mounted in the inner cavity of the mounting tube 3, the worm gear block 4 is transmission-connected with the worm 5, the worm gear block 4 is sleeved on the outer periphery of the mounting tube 3, and the worm gear block 4 and the adjustable aperture 2 are transmission-connected via a lever 6.

[0028] Preferably, the adjustable aperture 2 includes an adjustable aperture adjustment ring 7 and an adjustable aperture outer ring 8, the adjustable aperture adjustment ring 7 is rotatably arranged inside the ring body of the adjustable aperture outer ring 8, and the adjustable aperture 2 is fixedly arranged in the inner cavity of the mounting tube 3 through an interference fit between the adjustable aperture outer ring 8 and the inner cavity wall of the mounting tube 3.

[0029] The inner cavity of the mounting tube 3 is not only fixedly mounted with the adjustable diaphragm 2, but also the illumination light path 1 is fixedly mounted in the inner cavity of the mounting tube 3 to achieve coordination with the adjustable diaphragm 2. Such a structure is also more conducive to the coaxial arrangement of the illumination light path 1 and the adjustable diaphragm 2.

[0030] Preferably, the ring body of the outer ring 8 of the adjustable iris is provided with an adjustable iris tube clearance groove 9 along the circumferential direction, the ring body of the adjustable iris adjustment ring 7 is provided with an adjustable iris adjustment screw hole 10, and the body of the mounting tube 3 is provided with an mounting tube clearance groove 11 along the circumferential direction. The adjustable iris tube clearance groove 9 matches the mounting tube clearance groove 11 in structure and size, and when fixedly arranged in the inner cavity of the mounting tube 3, the adjustable iris tube clearance groove 9 overlaps with the mounting tube clearance groove 11 up and down, and the lever 6 One end of the worm gear block 4 passes through the adjustable aperture tube clearance groove 9 and the mounting tube clearance groove 11, and is threadedly fixed in the adjustable aperture adjustment screw hole 10. The body of the worm gear block 4 is provided with a worm gear upper circular hole 16, and the other end of the lever 6 is exposed from the worm gear upper circular hole 16, that is, when the worm gear block 4 rotates circumferentially, the adjustable aperture adjustment ring 7 can be driven to rotate synchronously through the lever 6, and the circumferential direction limitation is achieved through the adjustable aperture tube clearance groove 9 and the mounting tube clearance groove 11.

[0031] Preferably, it also has a U-shaped shell 12 that matches the worm 5, a supporting sleeve 13 is fixedly set on the U-shaped shell 12, the shaft of the worm 5 passes through the supporting sleeve 13, and the worm 5 is rotatably set on the U-shaped shell 12 through the supporting sleeve 13, one end of the worm 5 is exposed from the U-shaped shell 12 and is fixedly connected to the adjusting knob 14, a supporting seat 15 is fixedly set on the U-shaped shell 12, the other end of the worm 5 passes through the supporting seat 15, and the other end of the worm 5 is provided with a worm limiting groove 17 that matches the supporting seat 15, the supporting seat 15 is provided with a supporting seat screw hole 18, a fixing screw 19 is threadedly installed on the supporting seat 15 through the supporting seat screw hole 18, and the end of the fixing screw 19 is limitedly matched with the supporting seat screw hole 18.

[0032] Preferably, the illumination optical path 1, the adjustable aperture 2, the mounting tube 3 and the worm gear block 4 are coaxially arranged.

[0033] The working principle of the utility model is as follows:

[0034] The adjustment knob 14 of the technical solution of the present application is located on the side of the microscope body, so the doctor can easily touch it during operation. At the same time, there are no other easily confused adjustment switches around the adjustment knob 14. In this way, the spot size can be adjusted by rotating the adjustment knob 14 without being restricted by the presence or absence of a color filter and the type of the color filter. The doctor can adjust the size of any color spot at will.

[0035] During actual operation, the doctor drives the worm 5 to rotate by rotating the adjusting knob 14. At this time, the worm wheel block 4 connected to the worm 5 will rotate circumferentially. The worm wheel block 4 can exert a force on the lever 6 during the rotation, thereby driving the lever 6 to rotate. Since the positions of the mounting tube 3 and the outer ring 8 of the adjustable aperture remain fixed, the lever 6 will drive the adjustable aperture adjustment ring 7 to rotate, thereby realizing the adjustment of the aperture size. At this time, the size of any color light spot can be adjusted at will. Furthermore, the lever 6 can be limited by the adjustable aperture tube yield groove 9 and the mounting tube yield groove 11, thereby limiting the direction of the worm wheel block 4 and the worm 5.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A mechanism for adjusting an illumination spot of a surgical microscope, comprising an illumination light path (1) and an adjustable diaphragm (2), wherein the illumination light path (1) and the adjustable diaphragm (2) are coaxially arranged, and characterized in that: It also includes a mounting tube (3), a worm wheel block (4) and a worm (5); the illumination light path (1) and the adjustable diaphragm (2) are fixedly mounted in the inner cavity of the mounting tube (3); the worm wheel block (4) and the worm (5) are transmission-connected; the worm wheel block (4) is sleeved on the outer periphery of the mounting tube (3); and the worm wheel block (4) and the adjustable diaphragm (2) are transmission-connected via a lever (6).

2. The mechanism for adjusting illumination spot of a surgical microscope according to claim 1, characterized in that: The adjustable iris (2) comprises an adjustable iris adjustment ring (7) and an adjustable iris outer ring (8); the adjustable iris adjustment ring (7) is rotatably arranged inside the ring body of the adjustable iris outer ring (8); the adjustable iris (2) is fixedly arranged in the inner cavity of the mounting tube (3) through an interference fit between the adjustable iris outer ring (8) and the inner cavity wall of the mounting tube (3).

3. A mechanism for adjusting illumination spot of a surgical microscope according to claim 1 or 2, characterized in that: The ring body of the outer ring (8) of the adjustable iris is provided with an adjustable iris tube clearance groove (9) along the circumferential direction, the ring body of the adjustable iris adjustment ring (7) is provided with an adjustable iris adjustment screw hole (10), and the body of the mounting tube (3) is provided with an mounting tube clearance groove (11) along the circumferential direction. The adjustable iris tube clearance groove (9) and the mounting tube clearance groove (11) have matching structures and sizes, and when the adjustable iris tube clearance groove (9) and the mounting tube clearance groove (11) are fixedly arranged in the inner cavity of the mounting tube (3), the adjustable iris tube clearance groove (9) and the mounting tube clearance groove (11) overlap each other vertically, and a lever (6) is provided at one end. The end of the lever (6) passes through the adjustable iris cylinder clearance groove (9) and the mounting cylinder clearance groove (11), and is threadedly fixed in the adjustable iris adjustment screw hole (10). The body of the worm gear block (4) is provided with a worm gear upper circular hole (16), and the other end of the lever (6) is exposed from the worm gear upper circular hole (16). That is, when the worm gear block (4) rotates circumferentially, the adjustable iris adjustment ring (7) can be driven to rotate synchronously through the lever (6), and the circumferential direction limitation is achieved through the adjustable iris cylinder clearance groove (9) and the mounting cylinder clearance groove (11).

4. The mechanism for adjusting illumination spot of a surgical microscope according to claim 1, characterized in that: The invention also comprises a U-shaped housing (12) matched with the worm (5); a support sleeve (13) is fixedly arranged on the U-shaped housing (12); a shaft of the worm (5) passes through the support sleeve (13); the worm (5) is rotatably arranged on the U-shaped housing (12) through the support sleeve (13); one end of the worm (5) is exposed from the U-shaped housing (12) and is fixedly connected to the adjusting knob (14); a support seat (15) is fixedly arranged on the U-shaped housing (12); the other end of the worm (5) passes through the support seat (15); the other end of the worm (5) is provided with a worm limiting groove (17) matched with the support seat (15); the support seat (15) is provided with a support seat screw hole (18); a set screw (19) is threadedly installed on the support seat (15) through the support seat screw hole (18); and the end of the set screw (19) is limitedly matched with the support seat screw hole (18).

5. The mechanism for adjusting illumination spot of a surgical microscope according to claim 1, characterized in that: The illumination optical path (1), the adjustable diaphragm (2), the mounting tube (3) and the worm gear block (4) are coaxially arranged.

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