Calibration device and calibration method for endoscope

Abstract

The present invention relates to a calibration device and calibration method for an endoscope, comprising a positioning device, an adjustment device and an imaging device, wherein the positioning device can be used to fix the handle of the endoscope and / or the tube of the endoscope, the adjustment device has a rotation adjustment part, and the rotation adjustment part can be used to rotate the lens of the endoscope, the imaging device comprises a light source and an imaging area, the lens has a reflective area, the light source can emit light to the reflective area, and a reflective light spot is formed in the imaging area through refraction by the reflective area, and the imaging area has a calibration mark for calibration matching with the reflective light spot. In the above-mentioned calibration device and calibration method for an endoscope, a non-contact optical detection method is adopted, which can directly form a reflective area based on a partial area of ​​the lens of the endoscope, cooperate with the imaging device to realize the judgment of the lens direction, and detect the consistency of the direction of the endoscope lens and the direction of the handle of the endoscope.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a calibration device and a calibration method for an endoscope. Background Art

[0002] An endoscope is a detection instrument that integrates traditional optics, ergonomics, precision machinery, modern electronics, mathematics, and software. It is composed of image sensors, optical lenses, light sources, mechanical devices, and other structures. The endoscope can enter the stomach through the mouth or enter the body through other natural orifices. The endoscope can then be used to see lesions that cannot be displayed by X-rays. It is very useful for doctors' diagnosis and treatment activities. For example, with the help of an endoscope, doctors can observe ulcers or tumors in the stomach and develop the best treatment plan accordingly.

[0003] If the handle and lens of the endoscope are not properly installed, the lens direction may be easily deflected. The deflected lens will make the doctor feel that the hand holding the handle and the eye are inconsistent during use, which affects the doctor's operating comfort. Based on this, the endoscope must be calibrated for consistency in the direction of the lens and handle before leaving the factory to ensure that the doctor does not feel any incoordination when using the endoscope.

[0004] In the prior art, the direction consistency calibration of the lens and the handle is usually performed by marking a laser mark on the endoscope tube, and the direction consistency adjustment of the lens and the handle is achieved by aligning the laser mark with the pin hole on the handle. However, since the endoscope tube is usually long and is a stamped part with insufficient precision, it is easy to cause inaccurate lens installation direction due to inaccurate laser mark position, which will result in low accuracy of the direction consistency calibration of the lens and the handle, which cannot meet existing needs. Summary of the invention

[0005] Based on this, it is necessary to provide an endoscope calibration device and a calibration method to address the above-mentioned technical problems.

[0006] The present invention provides a calibration device for an endoscope, the calibration device comprising:

[0007] A positioning device, which can be used to fix the handle of the endoscope and / or the scope tube of the endoscope;

[0008] An adjusting device, wherein the adjusting device has a rotation adjusting portion, and the rotation adjusting portion can be used to rotate a lens of the endoscope;

[0009] An imaging device, wherein the imaging device includes a light source and an imaging area, wherein the lens has a reflective area, wherein the light source can emit light to the reflective area, and a reflected light spot is formed in the imaging area through refraction by the reflective area, and wherein the imaging area has a calibration mark for calibrating and matching with the reflected light spot.

[0010] In one embodiment, the calibration device comprises:

[0011] A guide base, wherein the positioning device, the adjusting device and the imaging device are arranged on the guide base along a reference straight line.

[0012] In one of the embodiments, a linear track is provided on the guide base, the linear track constitutes the reference straight line, and at least one of the positioning device, the adjustment device and the imaging device is movably assembled on the guide base along the linear track.

[0013] In one embodiment, the rotation adjustment unit includes:

[0014] A rotating member, wherein the rotating member is provided with a fixing hole, and the fixing hole can be used to fix the lens of the endoscope;

[0015] A driving member is drivingly connected to the rotating member.

[0016] In one embodiment, the rotating member is a worm gear, and the driving member is a worm.

[0017] In one embodiment, the positioning device comprises a first base, the first base has a first groove, and the first groove can be used to fix the handle of the endoscope and / or the tube of the endoscope; and / or,

[0018] The adjusting device comprises a second base, the second base defines a second groove, and the rotation adjusting portion is arranged in the second groove.

[0019] In one embodiment, the imaging device has a calibration plate, and a surface of the calibration plate constitutes the imaging area; and / or,

[0020] The imaging area can change position and / or angle relative to the light source.

[0021] In one embodiment, the reflective area is formed by a protective glass of a lens of an endoscope.

[0022] The present invention also provides a calibration method for an endoscope, based on the calibration device, comprising the following steps:

[0023] Fixing the handle and / or the tube of the endoscope on the positioning device;

[0024] The lens of the endoscope is rotated relative to the handle of the endoscope and / or the lens tube of the endoscope by utilizing the rotation adjustment part of the adjustment device, so that the calibration mark on the imaging device forms a calibration match with the reflected light spot.

[0025] The present invention also provides a calibration method for an endoscope, based on the calibration device, comprising the following steps:

[0026] Fixing the handle of the endoscope on the positioning device;

[0027] The rotation adjustment part of the adjustment device is used to rotate the endoscope tube and / or the endoscope lens relative to the handle of the endoscope, so that the calibration mark on the imaging device and the reflected light spot form a calibration match.

[0028] In the above-mentioned endoscope calibration device and calibration method, a non-contact optical detection method is adopted, and a reflective area can be directly formed based on a partial area of ​​the endoscope lens, and the direction of the lens can be judged in cooperation with an imaging device, thereby detecting the consistency of the direction of the endoscope lens and the direction of the endoscope handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a calibration device provided in one embodiment of the present invention;

[0030] Figure 2 For Figure 1 A schematic diagram of a partial structure of the calibration device shown;

[0031] Figure 3 A schematic diagram of the structure of a rotation adjustment portion provided in one embodiment of the present invention;

[0032] Figure 4 A schematic diagram of a calibration device in use according to an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the structure of a lens of an endoscope provided in one embodiment of the present invention;

[0034] Figure 6 A schematic diagram of calibration matching between a reflection light spot and a calibration mark provided in one embodiment of the present invention;

[0035] Figure 7 For Figure 6 A schematic diagram of the structural state of the endoscope in a state where the reflected light spot and the calibration mark are calibrated and matched;

[0036] Figure 8 For Figure 7 An enlarged schematic diagram of the structural state of the endoscope shown;

[0037] Fig. 9 A schematic diagram of calibration matching between a reflection light spot and a calibration mark provided in one embodiment of the present invention;

[0038] Fig.10 For Fig. 9 A schematic diagram of the structural state of the endoscope in a state where the reflected light spot and the calibration mark are calibrated and matched;

[0039] Fig.11 For Fig.10 The schematic diagram of the structure of the endoscope in an enlarged state is shown;

[0040] Fig.12 It is a schematic structural diagram of an adjustment seat provided in one embodiment of the present invention.

[0041] Figure Number:

[0042] 1000, endoscope; 2000, positioning device; 3000, adjustment device; 4000, imaging device; 5000, guide base;

[0043] 1100, handle; 1200, lens tube; 1300, lens; 1400, protective glass; 1500, adjustment seat;

[0044] 1410, reflective area;

[0045] 1510, adjustment hole; 1520, adjustment screw;

[0046] 2100, first base; 2110, first groove;

[0047] 3100, second base; 3200, rotation adjustment part;

[0048] 3110, second groove; 3210, rotating member; 3220, driving member;

[0049] 4100, light source; 4200, calibration plate;

[0050] 4110, emitted light; 4120, reflected light spot; 4210, imaging area; 4220, calibration mark;

[0051] 5100, Straight track. DETAILED DESCRIPTION

[0052] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0058] In order to more clearly describe the structure of the endoscope 1000 and the calibration device, the term "distal end" is defined herein to mean the end away from the operator during the surgical operation, and the term "proximal end" is defined herein to mean the end close to the operator during the surgical operation. Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0059] Typically, the endoscope 1000 includes a handle 1100, a mirror tube 1200 and a lens 1300. The handle 1100 of the endoscope 1000 can be held by an operator to facilitate the operation of the endoscope 1000. The proximal end of the mirror tube 1200 of the endoscope 1000 is connected to the handle 1100 of the endoscope 1000, and the lens 1300 of the endoscope 1000 is arranged at the distal end of the mirror tube 1200 of the endoscope 1000. In order to ensure that the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000 can form directional consistency (usually manifested as the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000 have consistency in circumferential angles), the present application adopts the following technical solution.

[0060] See also Figures 1 to 12As shown, an embodiment of the present invention provides a calibration device for an endoscope 1000, wherein the calibration device includes a positioning device 2000, an adjustment device 3000 and an imaging device 4000. The positioning device 2000 can be used to fix the handle 1100 of the endoscope 1000, and can also fix the mirror tube 1200 of the endoscope 1000, or the positioning device 2000 can also fix the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000 at the same time. Under different adjustment requirements, the operator can select and adjust the specific fixing position of the endoscope 1000. In coordination therewith, the adjusting device 3000 has a rotation adjusting portion 3200, and the rotation adjusting portion 3200 can be used to rotate the lens 1300 of the endoscope 1000. Moreover, the imaging device 4000 includes a light source 4100 and an imaging area 4210. The lens 1300 usually has a reflective area 1410. Therefore, in the process of adjusting the consistency of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000, the light source 4100 can be used to emit light 4110 to the reflective area 1410, so that the emitted light 4110 passes through the reflective area 1410. The refraction of the light area 1410 forms a reflected light spot 4120 in the imaging area 4210, wherein the imaging area 4210 has a calibration mark 4220 for calibrating and matching the reflected light spot 4120. After the reflected light spot 4120 is projected into the imaging area 4210, the operator can use the calibration mark 4220 to form a calibration match with the reflected light spot 4120. In short, the comparison between the calibration mark 4220 and the reflected light spot 4120 is used to determine whether there is a directional deviation between the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000.

[0061] If it is determined that there is a directional deviation between the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000, the operator can use the rotation adjustment portion 3200 of the adjustment device 3000 to rotate the lens 1300 of the endoscope 1000. At this time, since the handle 1100 of the endoscope 1000 or the lens tube 1200 of the endoscope 1000 is fixed by the positioning device 2000, the rotation adjustment portion 3200 of the adjustment device 3000 on the lens 1300 of the endoscope 1000 is relative to the rotation of the handle 1100 of the endoscope 1000, or the rotation adjustment portion 3200 of the adjustment device 3000 on the endoscope 1000 is relative to the rotation of the handle 1100 of the endoscope 1000. The rotation of the lens 1300 of the endoscope 1000 is relative to the rotation of the lens tube 1200 of the endoscope 1000. As the operator uses the rotation adjustment part 3200 of the adjustment device 3000 to rotate the lens 1300 of the endoscope 1000, the reflected light spot 4120 projected in the imaging area 4210 will also rotate with the rotation of the lens 1300 of the endoscope 1000, until the reflected light spot 4120 and the calibration mark 4220 in the imaging area 4210 form a predetermined matching state. At this time, it is proved that the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000 have formed a directional consistency match, and the calibration of the endoscope 1000 is completed.

[0062] The positioning device 2000, the adjusting device 3000 and the imaging device 4000 respectively play the functions of fixing the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000, rotating the lens 1300 of the endoscope 1000, and realizing the imaging function of the reflective area 1410 on the lens 1300. Therefore, the positioning device 2000, the adjusting device 3000 and the imaging device 4000 usually need to be matched and arranged along the length direction of the endoscope 1000 to meet the functional operation of different parts of the endoscope 1000. For example, the endoscope 1000 is usually a linear structure, so the positioning device 2000, the adjusting device 3000 and the imaging device 4000 need to be arranged along a straight line, see Figure 1 and Figure 2As shown, for example, in one embodiment, the calibration device may include a guide base 5000, and a reference straight line for installing the positioning device 2000, the adjusting device 3000 and the imaging device 4000 may be formed in the guide base 5000, so that the positioning device 2000, the adjusting device 3000 and the imaging device 4000 are arranged on the guide base 5000 along the reference straight line. Of course, in addition to this, if the structure of the endoscope 1000 is a non-linear structure, then the positioning device 2000, the adjusting device 3000 and the imaging device 4000 may also be arranged in a non-linear shape, for example, the positioning device 2000, the adjusting device 3000 and the imaging device 4000 may be arranged in an arc shape, etc., which is not limited here.

[0063] The positioning device 2000, the adjusting device 3000 and the imaging device 4000 can be fixed and arranged on the guide base 5000 in any structural form. For example, in one embodiment, a linear track 5100 can be provided on the guide base 5000, and the track direction of the linear track 5100 can constitute the reference straight line. At this time, the positioning device 2000, the adjusting device 3000 and the imaging device 4000 can be arranged on the guide base 5000 in a linear structure through the linear track 5100. The linear track 5100 can be used to conveniently and accurately arrange the positioning device 2000, the adjusting device 3000 and the imaging device 4000 on the guide base 5000.

[0064] Moreover, the positioning device 2000, the adjusting device 3000 and the imaging device 4000 can be movably assembled on the guide base 5000 along the linear track 5100. For example, any suitable device can be selected from the positioning device 2000, the adjusting device 3000 and the imaging device 4000 to be movably assembled along the linear track 5100. For example, a sliding block, a sliding groove or the like that cooperates with the linear track 5100 can be provided on the positioning device 2000, the adjusting device 3000 or the imaging device 4000. The sliding matching structure is then assembled on the guide base 5000 by sliding along the linear track 5100 using sliding matching structures such as sliders and slide grooves. Once the positioning device 2000, the adjusting device 3000 or the imaging device 4000 can move linearly on the guide base 5000 along the linear track 5100, the relative distances between the positioning device 2000, the adjusting device 3000 and the imaging device 4000 can be adjusted according to the requirements of assembling the endoscope 1000, thereby making the assembly and disassembly of the endoscope 1000 more convenient and quick.

[0065] The rotation adjustment part 3200 of the adjustment device 3000 can be mainly used to rotate the lens 1300 of the endoscope 1000, and the rotation of the lens 1300 of the endoscope 1000 is a fixed-axis rotation along the central axis of the lens tube 1200. Therefore, the rotation adjustment part 3200 can adopt any structural form. For example, in one embodiment, the rotation adjustment part 3200 can include a rotating member 3210 and a driving member 3220, and the rotating member 3210 also has a fixing hole, which can be used Fix the lens 1300 of the endoscope 1000. When the lens 1300 of the endoscope 1000 is inserted into and fixed in the fixing hole, the fixed-axis rotation of the rotating member 3210 can be converted into the fixed-axis rotation of the lens 1300 of the endoscope 1000. The rotation drive of the rotating member 3210 can be achieved by connecting the driving member 3220 to the rotating member 3210. After the movement of the driving member 3220 is controlled by any power source such as a motor, the driving member 3220 can be used to drive the rotating member 3210 to rotate on a fixed axis.

[0066] See also Figure 3 As shown, for example, in one embodiment, the rotating member 3210 can be a worm wheel with a fixing hole at the central position of the worm wheel, and the driving member 3220 can be a worm, the worm is controlled to rotate by a power source, and then the meshing transmission of the worm and the worm wheel can form a worm gear structure. Of course, the rotation adjustment part 3200 can also choose to adopt other structural forms, which are not limited here.

[0067] In one embodiment, the positioning device 2000 may also include a first base 2100, the first base 2100 is provided with a first groove 2110, and the first groove 2110 can be used to fix the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000. At this time, the structural shape of the first groove 2110 can be provided according to the corresponding structure of the endoscope 1000, such as a square groove, a circular groove, etc., or a deformed structure can be provided inside the first groove 2110 to adapt to the corresponding structure of the endoscope 1000. Similarly, the adjustment device 3000 may also include a second base 3100, the second base 3100 is provided with a second groove 3110, the rotation adjustment part 3200 is provided in the second groove 3110, and the structure of the second groove 3110 can also be provided according to the assembly requirements of the rotation adjustment part 3200, such as a square groove, a circular groove, etc.

[0068] See also Figures 4 to 11As shown, the reflective area 1410 can also be formed by selecting a suitable position or structure on the lens 1300 of the endoscope 1000. For example, in one embodiment, the lens 1300 of the endoscope 1000 has a protective glass 1400, and the protective glass 1400 has a reflective effect. Therefore, the reflective area 1410 can be directly formed by the protective glass 1400 of the lens 1300 of the endoscope 1000. When the shape of the protective glass 1400 is different, the shape of the reflected light spot 4120 will also be different. Similarly, the calibration mark 4220 can be selected as a suitable shape such as a straight line mark or a curve mark, so it is necessary to compare the reflected light spots 4120 of different shapes with the calibration mark 4220.

[0069] See also Figures 6 to 8 For example, when the shape of the protective glass 1400 is a waist hole shape, it is only necessary to determine whether the reflected light spot 4120 is parallel to the straight line mark, and then the direction consistency of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000 can be determined. Figures 9 to 11 As shown, if the protective glass 1400 is two circular lenses, two circular reflection spots 4120 can be observed on the calibration plate 4200. By judging whether the two circular reflection spots 4120 are on the same straight line mark according to the straight line mark on the calibration plate 4200, the direction consistency of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000 can be judged. In addition, the protective glass 1400 and the calibration mark 4220 can also choose other structural forms, and technicians in this field can set them according to needs, which is not limited here.

[0070] The imaging area 4210 of the imaging device 4000 can be formed by any surface structure of the imaging device 4000, and the imaging area 4210 can be a plane area or a curved area. For example, in one embodiment, the imaging device 4000 has a calibration plate 4200, and the calibration plate 4200 can be a plane plate or a curved plate. Therefore, the imaging area 4210 can be formed by using the surface of the calibration plate 4200.

[0071] Moreover, the imaging area 4210 can change its position relative to the light source. For example, the imaging area 4210 can change its position relative to the light source, which may mean that the imaging area 4210 can move up and down, left and right, and in an inclined direction relative to the light source, or the imaging area 4210 can also change its angle relative to the light source. For example, the imaging area 4210 can change its angle relative to the light source, which may mean that the imaging area 4210 can rotate clockwise, counterclockwise, etc. relative to the light source. In one embodiment, when the imaging area 4210 is constructed using the surface of the calibration plate 4200, the position and angle of the imaging area 4210 relative to the light source can be changed by changing the position and angle of the calibration plate 4200, which is not limited here.

[0072] Therefore, when the reflected light spot 4120 formed in the imaging area 4210 has not yet formed a calibration match with the calibration mark 4220, or the formed calibration match effect is not good, the reflected light spot 4120 can still be matched with the calibration mark 4220 by changing the position and angle of the imaging area 4210 relative to the light source. For example, when the waist-shaped reflected light spot 4120 is not parallel to the straight line mark on the calibration plate but not aligned, the position of the imaging area 4210 can be moved up and down so that the waist-shaped reflected light spot 4120 can not only be parallel to the straight line mark on the calibration plate but also aligned, and then determine whether the two circular reflected light spots 4120 are on the same straight line mark. In addition, when the reflected light spot 4120 and the calibration mark 4220 adopt other structural forms, the reflected light spot 4120 can be matched with the calibration mark 4220 by changing the position and angle of the imaging area 4210 relative to the light source, which is not limited here.

[0073] The above is a default directional consistency match of 0° between the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000. In addition to this, the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000 can also form a directional consistency match at other angles, such as directional consistency matches at angles of 30°, 45°, etc., and those skilled in the art can set it according to needs, which is not limited here.

[0074] It can be seen that the calibration device actually adopts a non-contact optical detection method, and can directly form a reflective area 1410 based on a partial area of ​​the lens 1300 of the endoscope 1000 and cooperate with the imaging device 4000 to realize the judgment of the direction of the lens 1300, and then detect the consistency of the direction of the lens 1300 of the endoscope 1000 and the direction of the handle 1100 of the endoscope 1000.

[0075] The present invention also provides a calibration method for an endoscope 1000, based on the calibration device, comprising the following steps: fixing the handle 1100 and the mirror tube 1200 of the endoscope 1000 on the positioning device 2000, or only fixing the mirror tube 1200 of the endoscope 1000 on the positioning device 2000, at this time, using the rotation adjustment part 3200 of the adjustment device 3000 to adjust the handle 1100 and the mirror tube 1200 of the endoscope 1000 relative to the endoscope 1000. Rotating the lens 1300 of the endoscope 1000 by 200 can cause the lens 1300 of the endoscope 1000 to rotate on a fixed axis. By observing the relative relationship between the reflected light spot 4120 and the calibration mark 4220 of the imaging area 4210 of the imaging device 4000, the calibration mark 4220 on the imaging device 4000 and the reflected light spot 4120 form a calibration match, and then it can be proved that the handle 1100 of the endoscope and the lens 1300 of the endoscope form a directional consistency match.

[0076] For specific calibration matching methods, please refer to Figures 6 to 11 For example, if the shape of the protective glass 1400 is a waist hole shape, it is only necessary to determine whether the reflected light spot 4120 is parallel to the straight line mark, so as to determine the directional consistency of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000. If the protective glass 1400 is two round lenses, two circular reflected light spots 4120 can be observed on the calibration plate 4200. According to the straight line marks on the calibration plate 4200, it is possible to determine whether the two circular reflected light spots 4120 are on the same straight line mark, so as to determine the directional consistency of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000.

[0077] Once the directional consistency calibration of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000 is completed, the lens 1300 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000 can be fixed by dispensing glue or the like, and the calibration result of directional consistency matching is determined. In other words, at this time, the relative relationship between the lens 1300 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000 can no longer be adjusted and calibrated.

[0078] Therefore, if after the endoscope 1000 has been delivered for use a certain number of times, the lens 1300 of the endoscope 1000 is offset again relative to the handle 1100 of the endoscope 1000, the lock between the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000 can be released to allow the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000 to rotate relative to each other, thereby recalibrating the directional consistency of the lens 1300 of the endoscope 1000 and the handle 1100 of the endoscope 1000.

[0079] Among them, any structural form can be used to achieve relative locking and relative release between the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000. For example, an adjustment seat 1500 can be set between the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000, and the adjustment seat 1500 has an adjustment hole 1510. Then, the locking and release between the handle 1100 of the endoscope 1000 and the mirror tube 1200 of the endoscope 1000 are achieved by the threaded cooperation between the adjustment screw 1520 and the adjustment hole 1510.

[0080] In this regard, the present invention also provides a calibration method for an endoscope 1000, based on the calibration device, comprising the following steps: fixing the handle 1100 of the endoscope 1000 on the positioning device 2000, and using the rotation adjustment portion 3200 of the adjustment device 3000 to rotate the mirror tube 1200 and the lens 1300 of the endoscope 1000 relative to the handle 1100 of the endoscope 1000, or only rotating the mirror tube 1200 of the endoscope 1000, at this time, the calibration mark 4220 on the imaging device 4000 is calibrated and matched with the reflected light spot 4120. It can be seen from this that the calibration method actually rotates the scope tube 1200 and the lens 1300 of the endoscope 1000 relative to the handle 1100 of the endoscope 1000 to achieve calibration, or only rotates the scope tube 1200 of the endoscope 1000 to achieve calibration. Therefore, this calibration method is suitable for the situation where the lens 1300 of the endoscope 1000 and the scope tube 1200 of the endoscope 1000 have been fixed by means of dispensing or the like.

[0081] Similarly, the specific calibration matching method can also refer to Figures 6 to 11 For example, if the shape of the protective glass 1400 is a waist hole shape, it is only necessary to determine whether the reflected light spot 4120 is parallel to the straight line mark, so as to determine the directional consistency of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000. If the protective glass 1400 is two round lenses, two circular reflected light spots 4120 can be observed on the calibration plate 4200. According to the straight line marks on the calibration plate 4200, it is possible to determine whether the two circular reflected light spots 4120 are on the same straight line mark, so as to determine the directional consistency of the handle 1100 of the endoscope 1000 and the lens 1300 of the endoscope 1000.

[0082] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0083] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A calibration device for an endoscope, characterized in that: The calibration device comprises: A positioning device, which can be used to fix the handle of the endoscope and / or the scope tube of the endoscope; An adjusting device, wherein the adjusting device has a rotation adjusting portion, and the rotation adjusting portion can be used to rotate a lens of the endoscope; An imaging device, wherein the imaging device includes a light source and an imaging area, wherein the lens has a reflective area, wherein the light source can emit light to the reflective area, and a reflected light spot is formed in the imaging area through refraction by the reflective area, and wherein the imaging area has a calibration mark for calibrating and matching with the reflected light spot.

2. The calibration device according to claim 1, characterized in that: The calibration device comprises: A guide base, wherein the positioning device, the adjusting device and the imaging device are arranged on the guide base along a reference straight line.

3. The calibration device according to claim 2, characterized in that: The guide base is provided with a linear track, which constitutes the reference straight line. At least one of the positioning device, the adjusting device and the imaging device is movably assembled on the guide base along the linear track.

4. The calibration device according to claim 1, characterized in that: The rotation adjustment unit comprises: A rotating member, wherein the rotating member is provided with a fixing hole, and the fixing hole can be used to fix the lens of the endoscope; A driving member is drivingly connected to the rotating member.

5. The calibration device according to claim 4, characterized in that: The rotating member is a worm wheel, and the driving member is a worm.

6. The calibration device according to claim 1, characterized in that: The positioning device comprises a first base, the first base is provided with a first groove, and the first groove can be used to fix the handle of the endoscope and / or the tube of the endoscope; and / or, The adjusting device comprises a second base, the second base defines a second groove, and the rotation adjusting portion is arranged in the second groove.

7. The calibration device according to claim 1, characterized in that: The imaging device has a calibration plate, and a surface of the calibration plate constitutes the imaging area; and / or, The imaging area can change position and / or angle relative to the light source.

8. The calibration device according to claim 1, characterized in that: The reflective area is formed by the protective glass of the lens of the endoscope.

9. A calibration method for an endoscope, based on the calibration device according to any one of claims 1 to 8, characterized in that: The steps include: Fixing the handle and / or the tube of the endoscope on the positioning device; The lens of the endoscope is rotated relative to the handle of the endoscope and / or the lens tube of the endoscope by utilizing the rotation adjustment part of the adjustment device, so that the calibration mark on the imaging device forms a calibration match with the reflected light spot.

10. A calibration method for an endoscope, based on the calibration device according to any one of claims 1 to 8, characterized in that: The steps include: Fixing the handle of the endoscope on the positioning device; The rotation adjustment part of the adjustment device is used to rotate the endoscope tube and / or the endoscope lens relative to the handle of the endoscope, so that the calibration mark on the imaging device and the reflected light spot form a calibration match.

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