Operating microscope

Abstract

The utility model discloses an operating microscope, which comprises an eyepiece, a positive image prism group, a beam splitter prism group, a zoom lens group, an illumination beam splitter, an objective lens, an intraoperative illumination module and a crack illumination module, the illumination optical splitter comprises two reflectors, and light beams emitted by the intraoperative illumination module and the crack illumination module are respectively reflected into the objective lens through the two reflectors and are focused on an object surface through the objective lens; compared with the existing microscope, the microscope provided by the utility model has the advantages that a crack illumination function is added, the fine structure of the eye tissue can be clearly displayed, and the examination accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of ophthalmic surgical equipment, and in particular to a surgical microscope. Background Technology

[0002] In ophthalmic surgery, the ophthalmic surgical microscope is an indispensable component. Traditional ophthalmic surgical microscopes only provide illumination for a circular area and do not have slit illumination capabilities. Traditional slit lamp systems consist of two parts: the slit illumination optical path and the microscopic imaging optical path. However, because ophthalmic surgical microscopes are used by doctors during ophthalmic surgery, their application scenarios differ from those of slit lamps. Therefore, general surgical microscopes do not have slit illumination capabilities. Utility Model Content

[0003] This invention provides a surgical microscope that can at least solve one of the problems pointed out in the background art.

[0004] An operating microscope includes an eyepiece, an image-converting prism group, a beam-splitting prism group, a zoom lens group, an illumination beam splitter, an objective lens, an intraoperative illumination module, and a slit illumination module.

[0005] The illumination beam splitter includes two mirrors. The beams emitted by the intraoperative illumination module and the slit illumination module are deflected by the two mirrors and enter the objective lens, and then focused onto the object surface by the objective lens.

[0006] Preferably, the intraoperative lighting module includes an illumination source, a condenser lens, an illumination aperture, a filter, and a projection lens arranged sequentially.

[0007] Preferably, the lighting source is a halogen lamp, a tungsten filament lamp, or an LED lamp.

[0008] Preferably, the slit illumination module includes a slit light source, a condenser lens, a slit unit, and a projection lens.

[0009] Preferably, the positive image prism group includes a positive image prism, two reflecting prisms I and a tube mirror arranged in sequence, and a reflecting prism II is arranged on the side of the two reflecting prisms I.

[0010] Preferably, it also includes a DMD projection module and an intraoperative recording module;

[0011] The DMD projection module includes a control board, a DMD chip, and a projection lens.

[0012] The intraoperative video recording module includes a camera and an imaging lens.

[0013] Preferably, the camera is a CCD camera or a CMOS camera.

[0014] Preferably, the beam splitter assembly includes two beam splitters, one of which splits the objective lens field of view to the intraoperative video recording module, and the other beam splitter couples the DM projection image to the visual optical path.

[0015] Compared with the prior art, the beneficial effects of this utility model are: compared with the existing microscopes, this utility model adds slit illumination function, which can clearly show the fine structure of eye tissues and increase the accuracy of examination. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a surgical microscope;

[0017] Figure 2 This is a schematic diagram of the slit illumination module.

[0018] Figure 3 This is a schematic diagram of the intraoperative lighting module;

[0019] Figure 4 This is a schematic diagram of the structure of an upright prism assembly;

[0020] Figure 5 This is a schematic diagram of the intraoperative recording module;

[0021] Figure 6 This is a schematic diagram of the DMD projection module.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1-Eyepiece, 2-Erecting prism group, 3-Beam splitter prism group, 4-Zoom lens group, 5-Illumination beam splitter, 6-Objective lens, 7-Intraoperative illumination module, 8-Slit illumination module, 9-DMD projection module, 10-Intraoperative recording module, 11-Reflector, 12-Slit light source, 13-Condenser lens, 14-Slit unit, 15-Projection lens, 16-Illumination source, 17-Illumination aperture, 18-Filter, 19-Erecting prism, 20-Reflecting prism one, 21-Tube lens, 22-Reflecting prism two, 23-DMD chip, 24-Beam splitter prism, 25-Imaging objective lens, 26-Camera, 27-Projection objective lens. Detailed Implementation

[0024] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0025] like Figures 1 to 6As shown, the surgical microscope provided in this embodiment includes an eyepiece 1, an image-converting prism group 2, a beam-splitting prism group 3, a zoom lens group 4, an illumination beam splitter 5, an objective lens 6, an intraoperative illumination module 7, and a slit illumination module 8, as well as a DMD projection module 9 and an intraoperative recording module 10.

[0026] The illumination beam splitter 5 includes two reflectors 11. The beams emitted by the intraoperative illumination module 7 and the slit illumination module 8 are deflected by the two reflectors 11 and enter the objective lens 6, and are focused on the object surface by the objective lens 6.

[0027] Based on this, the integration of slit illumination and microscopic surgical illumination can be achieved;

[0028] like Figure 2 As shown, the slit illumination module 8 includes a slit light source 12, a condenser lens 13, a slit unit 14, and a projection lens 15. The slit illumination module 8 can be used to perform slit illumination examinations in real time during surgery. Users can use the slit illumination module 8 to examine patients before, during, and after surgery. When the slit illumination module 8 is turned on, the intraoperative illumination module 7 will be turned off to provide high-contrast slit images.

[0029] The rift lighting module 8 can be controlled by a computer to adjust its brightness or to turn it on and off. The rift lighting module 8 can also be turned on or off manually.

[0030] In some other embodiments, the slit illumination module 8 can be adjusted by an external knob to observe different target areas. The operator can observe high-definition slit images through the eyepiece 1 or through an external display screen. The slit inspection results during the operation can be recorded in real time by the intraoperative recording module 10.

[0031] Intraoperative illumination module 7 Figure 3 As shown, it includes an illumination source 16, a condenser lens 13, an illumination aperture 17, a filter 18, and a projection lens 15 arranged in sequence; the intraoperative illumination module 7 provides a wide range of illumination for the operation, enabling the operator to comfortably and clearly observe the target under different observation fields. The intraoperative illumination module 7 can be turned on and off and its brightness adjusted by computer control, or it can be turned on and off manually. The light source of the intraoperative illumination module 7 can be a halogen lamp, a tungsten filament lamp, or an LED lamp;

[0032] Eyepiece 1 is a binocular eyepiece 1, which can provide stereoscopic vision. Eyepiece 1 has an interpupillary distance adjustment function with an interpupillary distance adjustment range of 55-75mm. In some other embodiments, the binocular eyepiece 1 also has a diopter adjustment function with a diopter adjustment range of -6D to +6D. The adjustment method is threaded adjustment.

[0033] Since the eyepiece 1 in this embodiment is a binocular eyepiece 1, the number of the 19 groups of erecting prisms is two, such as... Figure 4 As shown, the erecting prism group 2 includes an erecting prism 19, two reflecting prisms 20, and a tube mirror 21 arranged sequentially. Reflecting prisms 22 are arranged beside the two reflecting prisms 20. The arrangement of the reflecting prisms 20 and 22 is as follows: Figure 4 As shown; the upright prism reverses the inverted image formed by the objective lens 6 into an upright image, making it easier for the human eye to observe comfortably; the tube lens 21, in conjunction with the objective lens 6, images the object onto the field stop position of the eyepiece 1 for human eye observation.

[0034] The beam splitter prism group 3 includes a pair of beam splitters 24, which are used to provide beam splitting function. One beam splitter prism 24 splits the field of view of the objective lens 6 into one path to the intraoperative video recording module 10, and the other beam splitter prism 24 is used to couple the DM projection image into the microscope visual optical path. This image is superimposed on the surgical image and can provide key information prompts to the operator during the operation.

[0035] The DMD projection device is used to project prompt information onto the microscope observation optical path, and includes a control board, DMD chip 23, lens objective 6, and a communication interface connected to the host.

[0036] The intraoperative video recording module 10 images the surgical field onto the photosensitive chip, and the computer host processes and saves the data. The intraoperative video recording module 10 includes an imaging objective lens 25, a photosensitive chip, an imaging circuit, and a communication interface connected to the computer host. The photosensitive chip can be either CMOS or CCD, i.e., CCD camera 26 or CMOS camera 26.

[0037] The zoom lens group 4 can be used to change the surgical field of view. Different surgical fields of view are confocal but have different resolutions, enabling large field of view search and small field of view observation. At the highest magnification, the central field of view resolution is higher than 50 line pairs. The zoom lens group 4 can be used for afocal continuous zoom or switching zoom. When using switching zoom, the zoom levels can be selected as 0.4X, 0.625X, 1.0X, 1.6X and 2.5X.

[0038] Objective lens 6, in conjunction with tube lens 21, provides high-resolution images for the human eye and intraoperative video recording device.

[0039] The method of using the surgical microscope in this embodiment includes: When in surgical mode: turn on the intraoperative illumination module 7, move the object to the focal plane, switch the zoom lens group 4, and find a suitable field of view; the operator sees the surgical object and key surgical prompts in the eyepiece 1, and then begins the surgery; When in examination mode: can be performed before, during, or after surgery. During a key step in the surgery, in order to observe the surgical effect, the operator can switch to examination mode, turn off the intraoperative illumination module 7, turn on the slit lamp illumination module, adjust the slit to the target observation position, and observe through the eyepiece 1 or an external display screen. The intraoperative recording module 10 records the examination results in real time and saves them to the computer host.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit and essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0041] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A surgical microscope, characterized in that, It includes eyepieces, image-converting prisms, beam-splitting prisms, zoom lenses, illumination beam splitters, objectives, intraoperative illumination modules, and slit illumination modules; The illumination beam splitter includes two mirrors. The beams emitted by the intraoperative illumination module and the slit illumination module are deflected by the two mirrors and enter the objective lens, and then focused onto the object surface by the objective lens.

2. The surgical microscope as described in claim 1, characterized in that, The intraoperative lighting module includes, in sequence, an illumination source, a condenser lens, an illumination aperture, a filter, and a projection lens.

3. A surgical microscope as described in claim 2, characterized in that, The lighting source is a halogen lamp, a tungsten filament lamp, or an LED lamp.

4. A surgical microscope as described in claim 1, characterized in that, The slit illumination module includes a slit light source, a condenser lens, a slit unit, and a projection lens.

5. A surgical microscope as described in claim 1, characterized in that, The positive image prism group includes a positive image prism, two reflecting prisms (I) and a tube mirror arranged in sequence, and a reflecting prism (II) is arranged on the side of the two reflecting prisms (I).

6. A surgical microscope as described in claim 1, characterized in that, It also includes a DMD projection module and an intraoperative recording module; The DMD projection module includes a control board, a DMD chip, and a projection lens. The intraoperative video recording module includes a camera and an imaging lens.

7. A surgical microscope as described in claim 6, characterized in that, The camera is either a CCD camera or a CMOS camera.

8. A surgical microscope as described in claim 6, characterized in that, The beam splitter assembly includes two beam splitters, one of which splits the objective lens field of view to the intraoperative video recording module, and the other beam splitter couples the DM projection image to the visual optical path.

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