CN210774623U - Initialization adjusting device for detecting optical performance of medical endoscope - Google Patents

Abstract

The utility model discloses an initialization adjusting device for detecting the optical performance of a medical endoscope, comprising a first angle adjusting device (5) for adjusting the angle of the endoscope, a second angle adjusting device for adjusting the angle of a target measuring plate, and realizing the first , a linkage mechanism (7) for synchronizing the second angle adjustment device and a fine adjustment structure (8) for the rotation of the fine adjustment linkage mechanism (7). The synchronous rotation of the mirror and the target board by 1/2 of the viewing angle can be adjusted to the nominal viewing angle, which improves the adjustment efficiency. Since both the endoscope and the target board rotate, the rotation of the target board can be adjusted The range only needs to be rotated within the range of 0-50°, so the adjustment range is reduced, the structure design can be simpler, and the operation is suitable for the adjustment needs of the viewing angle of 0-90°, which meets the initialization of the endoscope with a large viewing angle Adjust the demand and improve the adjustment efficiency.

Description

Initialization adjustment device for optical performance detection of medical endoscope

technical field

The utility model relates to the field of optical equipment detection, in particular to an initialization adjustment device for optical performance detection of a medical endoscope.

Background technique

With the rapid development of medical technology, medical electronic endoscopes can flexibly enter various cavities of the human body and display the images of the cavities of the human body with high definition, so they are widely used in clinical practice. However, with the popularity of this technology, its optical properties have a crucial impact on the diagnostic safety of patients. In response to this problem, the country and the industry have jointly formulated testing standards, so as to achieve the purpose of daily maintenance of its optical performance, detection and reception and fault diagnosis, so that the electronic endoscope is always in the best performance state and reduces its quality problems. medical accident caused. Due to the importance of the detection of optical performance of endoscopes, there are many related studies.

For example: the invention of application number: 201910069511.1 discloses a detection device and method for the optical performance of a medical endoscope, including a camera module, a motion adjustment module, a handheld device and a smart device. The camera module is connected to a connecting pipe through the motion adjustment module. Fixed connection, the other end of the connecting pipe is fixedly connected to the handheld device, the camera module is connected to the smart device through a signal transmission module, the motion adjustment module is connected to the handheld device through a wire, and the camera module is set as a miniature camera , the side of the camera module is also installed with lighting equipment, the lighting equipment is set as a waterproof LED lamp, the camera module and the lighting equipment are installed in a protective shell connected to one side of the motion adjustment module, and the protective shell is made of scratch-proof and oil-proof glass case. The device for detecting the optical performance of a medical endoscope and the method therefor can be photographed well, thereby obtaining more accurate information.

The utility model with the application number: 201420642156.5 discloses a detection device for the optical performance of a medical endoscope, which is fast in the detection speed of the viewing angle, suitable for detection under qualitative conditions, and has high precision, and a variety of detection items are concentrated in one In the detection equipment, the operation is simple, the detection cost is greatly reduced, and the error of the equipment itself is consistent. It includes a chassis, a guide rail, a slider, an active layer, a baffle, a target bracket, and a support frame. The support frame is fixed on the chassis and the support frame is provided with a shading object. The protruding part in the middle of the chassis is a guide rail, and the slider is on the guide rail. Sliding, the movable layer is on the slider and has a groove, the endoscope is placed in the groove, the target bracket is fixed at one end of the guide rail, the height of the target is adjusted through the target bracket, and the two baffles are located at the two ends of the guide rail. The two sides of the active layer are correspondingly provided with several positioning parts, and the active layer and the baffle are connected by positioning shafts passing through the positioning parts.

The utility model of application number: 200720083105.3 discloses a detector for detecting the optical performance of a medical rigid endoscope, especially the field angle and viewing angle of the medical rigid endoscope. It is characterized in that a turntable, a photoelectric shaft angle code disc, a rotating motor, etc. are installed on the electric rotary table. The signal output line of the photoelectric shaft angle code disc and the power line of the rotating motor are connected with the control box. Control switches, computing chips and data display screens are installed in the control box. The operator controls the turntable with the parallel light tube to rotate or stop through the control box, and transmits the electrical signal of the direction and angle of each rotation to the control box, so that the computing chip in the control box automatically calculates and sends it to the display screen to display the field of view. , viewing angle data. The detection by the utility model not only has high detection precision and convenient operation, but also the detection data can be automatically calculated and directly displayed.

However, in the process of detecting the optical performance of the medical rigid tube endoscope, it is first necessary to perform initialization adjustment, including: adjusting the center axis of the field of view to coincide with the target measurement center, and the center axis of the field of view is perpendicular to the target measurement board. Therefore, how to realize the medical rigid tube endoscope before testing It is very important to support and fix the mirror and ensure the geometric parameters of the above two points. The viewing angle refers to the angle between the geometric axis of the head end of the endoscope insertion part and the optical axis of the objective lens at the front end of the endoscope. Endoscopes are divided into direct-view, strabismus and side-view types according to the observation direction. Common viewing angles are 0°, 6°, 12°, 25°, 30°, 45°, 70°, 90° ° etc. However, since the viewing angle of most medical rigid endoscopes ranges from 0° to 90°, the existing structure simply adjusts the angle of the target plate to adapt to the viewing angle of the medical rigid endoscope. However, when the angle range of the viewing angle of the medical rigid endoscope is too large (greater than 45°), the adjustment of the target plate is more complicated, and it cannot meet the needs of rapid adjustment, which reduces the early stage of the process of detecting the optical performance of the medical rigid endoscope. work efficiency.

SUMMARY OF THE INVENTION

The purpose of the utility model is to provide an initialization adjustment device for the detection of the optical performance of a medical endoscope, which is suitable for the initialization adjustment of an endoscope with a large viewing angle.

The technical scheme adopted by the present utility model to solve the above problems is:

An initialization adjustment device for optical performance detection of a medical endoscope, characterized in that it includes a first angle adjustment device for adjusting the angle of the endoscope, a second angle adjustment device for adjusting the angle of a target plate, and a first and second angle adjustment device for realizing the first and second angles. A linkage mechanism for synchronizing the adjustment device and a fine-tuning structure for the rotation of the fine-tuning linkage mechanism, wherein: the sliding seat is linearly slidably mounted on the base, and the first angle adjustment device comprises a first drive screw, a first drive nut, The first connecting seat, the first supporting rod and the first rotating plate, the first driving screw is rotatably mounted on the sliding seat, the first driving screw and the first driving nut are matched by threads, and the first driving nut is fixed on the first connecting seat , the first connecting seat is linearly installed on the sliding seat, one end of the first connecting seat is hinged to one end of the first support rod, the other end of the first support rod is hinged to the first rotating plate, and the first rotating plate is hinged to the sliding seat The endoscope is fixed on the first rotating plate by the fixing device. By rotating the first transmission screw, the first transmission nut and the first connecting seat are driven to move linearly, thereby driving the first support rod to support the first rotating plate. The first rotating plate is rotated to adjust the angle of the endoscope. The second angle adjustment device includes a second drive screw, a second drive nut, a second connection seat, a second support rod and a second rotating plate. The second drive The screw is rotatably mounted on the base, the second drive screw and the second drive nut are matched by threads, the second drive nut is fixed on the second connection seat, the second connection seat is linearly slidably installed on the base, and the second connection seat is One end is hinged to one end of the second support rod, the other end of the second support rod is hinged to the second rotating plate, the second rotating plate is hinged to the base, and the target plate is installed on the second rotating plate. A rotating plate is in a horizontal state, and the second rotating plate is in a vertical state. By rotating the second transmission screw, the second transmission nut and the second connecting seat are driven to move linearly, thereby driving the second support rod to support the second rotating plate. The second rotating plate is rotated to adjust the angle of the target measuring plate. The first drive screw is fixed to the coarse adjustment rotating plate. The first drive screw is linked by the linkage mechanism and the second drive screw is set. Vertically arranged, during the rotation of the first angle adjustment device and the first angle adjustment device, the following formulas are satisfied: α ^m =α ⁿ , and α ^m /β ^m =α ⁿ /β ⁿ , where: α ^m is the first The rotation angle of the driving screw, β ^m is the rotation angle of the first rotating plate, α ⁿ is the rotation angle of the second driving screw, and β ⁿ is the rotation angle of the second rotating plate.

Further, preferably, the linkage mechanism includes a spline shaft and a spline shaft sleeve, the spline shaft and the spline shaft sleeve are sleeved, one end of the spline shaft is fixed with the first drive screw, and the spline shaft sleeve is fixed with a first drive screw. a bevel gear and a second bevel gear, the lower end of the second drive screw is fixed with a third bevel gear, the third bevel gear meshes with the first bevel gear, and the angle fine adjustment structure includes an adjustment rod, a fine adjustment rotating disc and a fourth bevel The gear, the adjusting rod is rotatably installed on the base, one end of the adjusting rod is fixed with the fine adjustment rotating disc, the other end of the adjusting rod is connected with the fourth bevel gear, and the fourth bevel gear meshes with the second bevel gear. The linkage mechanism is simple in structure, does not affect the sliding connection between the sliding seat and the base, and can ensure that the first drive screw and the second drive screw rotate at the same angle, and a fine-adjustment rotary disc is provided, which is driven by the rotation of the fine-adjustment rotary disc. The fourth bevel gear rotates, thereby driving the second bevel gear to rotate, thereby driving the first transmission screw and the second transmission screw to rotate, thereby adjusting the rotation angle of the first rotating plate and the rotating angle of the second rotating plate. The gear and the second bevel gear are meshed, so the large-angle rotation of the rotating plate can be realized through the transmission ratio between the gears, and the first transmission screw and the second transmission screw only rotate at a small angle, so as to realize the rotation angle of the first rotating plate Synchronous fine-tuning of the rotation angle of the second rotating plate. Multiple gears can also be set between the fourth bevel gear and the second bevel gear, and the fourth bevel gear is meshed with each gear in turn and finally connected to the second bevel gear, so as to achieve a larger transmission ratio, so that the progress of fine-tuning can be further improved. .

Further, preferably, the second rotating plate is connected to the target measuring installation plate for fixing the target measuring plate through two connecting rods, and one end of the two connecting rods respectively fixes the upper left end and the upper right end of the second rotating plate, and the target measuring installation plate There are two ball head seats fixed on the ball head seat, and a ball head groove is opened on the ball head seat. In the head slot, the connecting rod is sleeved with a connecting rod compression spring, the two ends of the connecting rod compression spring are respectively pressed against the target measuring plate and the second rotating plate, the second rotating plate is rotated and installed with a fine-tuning cam, and the fine-tuning cam is fixed on the Has cam handle. With this structure, by rotating the cam handle, the fine-tuning cam can toggle the second rotating plate, thereby fine-tuning the angle of the second rotating plate. And the two connecting rods pass through the mounting holes of the target mounting plate, and the other ends of the two connecting rods are fixed with the ball head, and the ball head is located in the ball head groove, that is, the installation of the second rotating plate is realized, and the first rotating plate is not affected. 2. The angle of the rotating plate is fine-tuned.

Further, preferably, the target mounting plate is provided with a plug slot for inserting the target plate.

Further, preferably, a linear guide block is slidably installed on the first rotating plate, the linear guide block is provided with a sliding groove, the fixing device is slidably installed on the linear guide block, and also includes a distance compensation mechanism, and the distance compensation mechanism includes a first gear. , the second gear, the third gear, the fourth gear and the rack, the other end of the first support rod is fixed with the first gear, the first rotating plate is rotated with the second gear, the third gear and the fourth gear, the third The gear and the fourth gear are fixed coaxially, the first gear is meshed with the second gear, the second gear is meshed with the third gear, the lower end of the linear guide block is fixed with a rack, and the rack is meshed with the fourth gear. With this structure, when the first support rod rotates, through the meshing of each gear, the rack is driven to move, thereby driving the linear guide block and the fixing device to move linearly, so as to realize distance compensation, thereby realizing the optical axis of the objective lens at the front end of the endoscope. can be near a reasonable location.

Further, as a preference, a dual-axis manual fine-tuning sliding table is installed on the base, and a vertical plate is fixed on the dual-axis manual fine-tuning sliding table. The distance is fine-tuned in the up and down direction, the second transmission screw is rotatably installed on the vertical plate, the second connecting seat is linearly slidably installed on the vertical plate, and the upper end of the second rotating plate is hinged on the upper end of the vertical plate.

Compared with the prior art, the present utility model has the following advantages and effects: the initializing adjustment device for the optical performance detection of the medical endoscope of the present utility model can be synchronously rotated by the endoscope and the target measuring plate by 1/2 of the viewing direction angle. Realize the adjustment to the nominal viewing angle, which improves the adjustment efficiency, and because both the endoscope and the target plate rotate, the rotation adjustment range of the target plate only needs to be rotated within the range of 0-50°, so the adjustment range is reduced , the structure design can be simpler, and the operation is suitable for the adjustment requirements of the viewing angle of 0-90°, which meets the initialization adjustment requirements of the large-angle viewing angle endoscope, and improves the adjustment efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of an endoscope according to an embodiment of the present invention.

FIG. 2 is a schematic three-dimensional structure diagram of a connecting device according to an embodiment of the present invention.

FIG. 3 is a schematic side view of the structure of the connecting device according to the embodiment of the present invention.

FIG. 4 is a schematic diagram of the internal structure of the connecting device according to the embodiment of the present invention.

FIG. 5 is a schematic three-dimensional structure diagram of a fixing device according to an embodiment of the present invention.

FIG. 6 is a schematic view of the front structure of the fixing device according to the embodiment of the present invention.

7 is a schematic diagram of the installation structure of the target measuring installation plate according to the embodiment of the present invention.

8 is a schematic structural diagram of a fine-tuning cam according to an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a spline shaft and a spline shaft sleeve according to an embodiment of the present invention.

10 is a schematic structural diagram of a distance compensation mechanism according to an embodiment of the present invention.

Number in the figure: Medical rigid tube endoscope 1, eyepiece interface 11, light guide interface 12, base 21, sliding seat 22, baffle 23, guide sleeve 241, sliding shaft 242, sliding wheel 243, fixing device 3, mounting seat 31, Y-shaped seat 32, left sliding block 33, left clamping block 331, right clamping block 341, right sliding block 34, clamping adjustment screw 35, left oblique pressing plate 361, left connecting plate 362, left sliding rod 363, Right oblique plate 371, right connecting plate 372, right sliding rod 373, linear guide block 38, locking screw 39, dual-axis manual fine-tuning slide 4, vertical plate 41, first angle adjustment device 5, first drive screw 51 , the first connecting seat 52, the first support rod 53, the first rotating plate 54, the first gear 551, the second gear 552, the third gear 553, the fourth gear 554, the rack 555, the coarse adjustment rotary disk 56, the first gear Two-angle adjustment device 6, second drive screw 61, second connecting seat 62, second supporting rod 63, second rotating plate 64, connecting rod 65, target mounting plate 66, insertion slot 67, ball socket 681, Ball groove 682, ball head 683, connecting rod compression spring 684, fine adjustment cam 685, cam handle 686, dial 691, scale indicator 692, linkage 7, spline shaft 71, spline sleeve 72, first cone Gear 73, Second Bevel Gear 74, Third Bevel Gear 75, Angle Fine Adjustment Structure 8, Adjustment Rod 81, Fine Adjustment Rotary Disc 82, Fourth Bevel Gear 83, Target Plate 9

Detailed ways

The present utility model will be further described in detail below with reference to the accompanying drawings and the embodiments. The following embodiments are the explanations of the present utility model and the present utility model is not limited to the following embodiments.

The optical performance detection method of the medical endoscope of the present embodiment is as follows:

Step 1: Fix the medical rigid tube endoscope 1 on the fixing device 3, fix the target measuring plate 9 (drawing several concentric circle figures with numerical values on the target measuring plate) on the target measuring installation plate 66, and fix it on the target measuring plate 66. Connect the light source interface of the cold light source to the light guide interface 12 of the endoscope, and the signal interface of the imaging system to the eyepiece interface 11 of the endoscope. At this time, the medical rigid tube endoscope 1 is set horizontally, and the target mounting plate 66 is vertical. set up;

Step 2: Control the fixing device 3 to rotate counterclockwise, at the same time, the target mounting plate 66 rotates clockwise, and the rotation angle of the fixing device 3 and the target mounting plate 66 is the same, until the rotation of the fixing device 3 and the target mounting plate 66 The angle is 1/2 of the nominal viewing angle, and the preliminary angle adjustment is completed;

Step 3: Observe the target measuring board on the display device of the imaging system, and realize the small-angle synchronous rotation of the fixing device 3 and the target measuring installation plate 66 through the angle fine adjustment structure 8 of the large transmission ratio, and move the fixing device 3 or the measuring device 3 linearly. The target device is used to make the center of the endoscope and the center of the target plate pattern coaxial, even if the outer circle of the endoscope field of view is coaxial with the target plate pattern;

Step 4, read the nominal reading of the largest visible ring, which is the angle of the endoscope's field of view, and twice the rotation angle of the fixing device 3 or the target mounting plate 66 is the angle of the endoscope's viewing angle.

Further, the fixing device 3 and the target mounting plate 66 are respectively driven by two crank-slider mechanisms, and the slider parts of the two crank-slider blocks are linked by two synchronously rotating screws, so as to ensure the synchronization of rotation. , The screw and the slider part are matched by the thread, which ensures the transmission effect and the progress of the angle adjustment.

Further, the fixing device 3 realizes the fixing of the endoscope by simultaneously clamping the cylinder wall at the eyepiece interface 11 of the endoscope and the outer wall at the light guide interface 12 of the endoscope.

Referring to FIGS. 1-9 , the initializing and adjusting device for detecting the optical performance of a medical endoscope specifically adopted in the method for detecting the optical performance of a medical endoscope in this example includes a medical rigid tube endoscope 1; an imaging system, and the signal interface connection of the imaging system The eyepiece interface 11 of the endoscope; the cold light source, the light source interface of the cold light source is connected to the light guide interface 12 of the endoscope; the connecting device, the connecting device includes a base 21, a sliding seat 22, a fixing device 3 for fixing the endoscope and an angle adjustment device, the angle adjustment device includes a first angle adjustment device 5 for adjusting the angle of the endoscope, a second angle adjustment device 6 for adjusting the angle of the target plate, and a linkage for realizing the synchronous linkage of the first and second angle adjustment devices 6 The angle fine adjustment structure 8 of the mechanism 7 and the rotation of the fine adjustment linkage mechanism 7, wherein: the sliding seat 22 is linearly slidably mounted on the base 21, and the first angle adjustment device 5 includes a first transmission screw 51, a first transmission nut, The first connecting seat 52, the first supporting rod 53 and the first rotating plate 54, the first driving screw 51 is rotatably mounted on the sliding seat 22, the first driving screw 51 and the first driving nut are threadedly matched, and the first driving nut is fixed On the first connecting seat 52, the first connecting seat 52 is linearly slidably mounted on the sliding seat 22, one end of the first connecting seat 52 is hinged to one end of the first support rod 53, and the other end of the first support rod 53 is hinged to the first rotation. On the plate 54, the first rotating plate 54 is hinged on the sliding seat 22, the endoscope is fixed on the first rotating plate 54 by the fixing device 3, and the first transmission screw 51 is rotated to drive the first transmission nut, the first transmission nut and the first transmission screw 51. The connecting seat 52 moves linearly, thereby driving the first support rod 53 to support the first rotating plate 54, so that the first rotating plate 54 rotates, thereby adjusting the angle of the endoscope. The second angle adjusting device 6 includes a second drive screw 61 , the second drive nut, the second connection seat 62, the second support rod 63 and the second rotating plate 64, the second drive screw 61 is rotatably mounted on the base 21, the second drive screw 61 and the second drive nut are matched by threads , the second transmission nut is fixed on the second connecting seat 62, the second connecting seat 62 is linearly slidably installed on the base 21, one end of the second connecting seat 62 is hinged to one end of the second supporting rod 63, and the second supporting rod 63 The other end is hinged on the second rotating plate 64, the second rotating plate 64 is hinged on the base 21, and the target measuring plate is mounted on the second rotating plate 64. In the initial state, the first rotating plate 54 is in a horizontal state, and the second rotating plate The rotating plate 64 is in a vertical state. By rotating the second transmission screw 61, the second transmission nut and the second connecting seat 62 are driven to move linearly, thereby driving the second support rod 63 to support the second rotating plate 64, so that the second rotating plate 64 is rotated. The plate 64 rotates to adjust the angle of the target plate. The first drive screw 51 fixes the coarse adjustment rotary disk 56. The first drive screw 51 is linked by the linkage mechanism 7 and the second drive screw 61. The first drive screw 51 is arranged horizontally. The two driving screws 61 are arranged vertically, and the following formula is satisfied during the rotation of the first angle adjusting device 5 and the first angle adjusting device 5: α ^m = α ⁿ , and α ^m /β ^m =α ⁿ /β ⁿ , wherein: α ^m is the rotation angle of the first drive screw 51 , β ^m is the rotation angle of the first rotating plate 54 , and α ⁿ is the second drive screw 61 The rotation angle of β ⁿ is the rotation angle of the second rotation plate 64 . A scale 691 for marking the rotation angle is fixed on the first rotating plate 54 , and a scale indicating mark 692 indicating a specific scale is fixed relative to the base 21 .

During the selection, the first drive screw 51 and the second drive screw 61, the first drive nut and the second drive screw 61, the first support rod 53 and the second support rod 63 all adopt the same structure or model, because the first angle adjustment Both the device 5 and the first angle adjustment device 5 can be understood as a crank-slider mechanism. If the size parameters, position parameters and other parameters of the two crank-slider mechanisms are set the same, and since the first drive screw 51 and the second drive screw 61 are Therefore, the rotation angle of the first rotating plate 54 and the rotating angle of the second rotating plate 64 can be ensured to be the same, so as to ensure the linear adjustment of the angle.

The linkage mechanism 7 includes a spline shaft 71 and a spline shaft sleeve 72, the spline shaft 71 and the spline shaft sleeve 72 are sleeved, and one end of the spline shaft 71 is fixed to the first drive screw 51, and the spline shaft sleeve 72 is fixed on the first drive screw 51. The first bevel gear 73 and the second bevel gear 74 are fixed, the lower end of the second drive screw 61 is fixed with the third bevel gear 75, the third bevel gear 75 meshes with the first bevel gear 73, and the angle fine adjustment structure 8 includes adjusting The rod 81, the fine adjustment rotary disk 82 and the fourth bevel gear 83, the adjustment rod 81 is rotatably installed on the base 21, one end of the adjustment rod 81 is fixed to the fine adjustment rotary disk 82, and the other end of the adjustment rod 81 is connected with the fourth bevel gear 83, The fourth bevel gear 83 meshes with the second bevel gear 74 . The linkage mechanism 7 has a simple structure, and does not affect the sliding connection between the sliding seat 22 and the base 21, and can ensure that the first transmission screw 51 and the second transmission screw 61 rotate at the same angle, and the fine adjustment rotating disc 82 is provided, and the fine adjustment rotating disc 82 is provided. The rotation of the rotating disc 82 drives the fourth bevel gear 83 to rotate, which in turn drives the second bevel gear 74 to rotate, thereby driving the first drive screw 51 and the second drive screw 61 to rotate, thereby adjusting the rotation angle of the first rotating plate 54 and the second bevel gear 74. The rotation angle of the two rotating plates 64, and since the fourth bevel gear 83 and the second bevel gear 74 are engaged, the rotating disc 82, the first transmission screw 51 and the The two drive screws 61 only rotate at a small angle, so as to achieve synchronous fine-tuning of the rotation angle of the first rotating plate 54 and the rotating angle of the second rotating plate 64 . A plurality of gears can also be arranged between the fourth bevel gear 83 and the second bevel gear 74, and the fourth bevel gear 83 is finally connected to the second bevel gear 74 through the meshing of each gear in turn, so as to achieve a larger transmission ratio and thus fine-tune the gear ratio. The progress can be further improved.

The fixing device 3 includes a mounting seat 31, a Y-shaped seat 32, a left sliding block 33, a right sliding block 34, and a clamping adjusting screw 35. The Y-shaped seat 32 is fixed on the mounting seat 31, and the mounting seat 31 is mounted on the first rotating plate 54. The left sliding block 33 and the right sliding block 34 are respectively located on both sides of the mounting seat 31, the clamping adjustment screw 35 is rotatably mounted on the mounting seat 31, and the left sliding block 33 and the right sliding block 34 are respectively fixed with a left nut, a right The nut, the left and right sections of the clamping adjustment screw 35 are respectively provided with left-handed threads and right-handed threads, and the left and right nuts are respectively screwed on the left and right sections of the clamping adjustment screw 35, so that by rotating the clamping adjustment screw 35. Make the left sliding block 33 and the right sliding block 34 move toward each other or slide back. The left sliding block 33 is fixed with a left clamping block 331 and horizontally slidingly installed with a left oblique plate 361. The oblique pressure plate 361 presses the left pressure spring of the right oblique pressure plate 371, the right clamping block 341 is fixed on the right sliding block 34 and the right oblique pressure plate 371 is installed horizontally, and the right sliding block 34 is provided with a right oblique pressure plate 371 for pressing the right oblique pressure plate 371. The right compression spring of the left oblique pressing plate 361, the left oblique pressing plate 361 and the right oblique pressing plate 371 are relatively arranged in a figure-eight shape, the left oblique pressing plate 361 and the right oblique pressing plate 371 are located above the Y-shaped seat 32, the Y-shaped seat 32, the left clamping The block 331 and the right clamping block 341 are both provided with a right V-shaped groove, wherein the notch of the V-shaped groove of the Y-shaped seat 32 is set upward, the notch of the V-shaped groove of the left clamping block 331 is set to the right, and the right clamping The notch of the V-groove of block 341 is set to the left. The process of clamping the endoscope by the fixing device 3 is as follows: place the barrel wall at the eyepiece interface 11 of the endoscope on the V-shaped groove of the Y-shaped seat 32, and rotate the clamping adjusting screw 35 to make the left sliding block 33 , The right sliding block 34 moves toward each other, so that the left oblique pressure plate 361 and the right oblique pressure plate 371 are pressed on the cylinder wall at the eyepiece interface 11 of the endoscope, and the V-shaped groove of the left clamping block 331 and the right clamping block 341 The V-shaped grooves are respectively clamped on the outer wall of the light guide interface 12 of the endoscope, so as to realize the fast fixing of the endoscope. The fixing device 3 has a simple structure and is easy to operate. It only needs to rotate the clamping adjusting screw 35 to realize the operation of clamping the endoscope. Similarly, the efficiency of removing the endoscope is also improved, and the positioning progress is relatively high. The endoscope generally has the following geometric characteristics, the axis of the barrel wall at the eyepiece interface 11 of the endoscope and the axis of the outer wall at the light guide interface 12 of the endoscope are vertical and intersect, and the front end of the endoscope has the objective lens light. The axis, the geometric axis of the end of the endoscope insertion part and the axis of the outer wall at the light guide interface 12 of the endoscope are in the same plane, so the fixing device 3 can not only realize the quick installation of the endoscope, but also be suitable for Many types of endoscopes are supported and fixed.

A linear guide block 38 is fixed on the first rotating plate 54 , the linear guide block 38 is provided with a sliding groove, the mounting seat 31 is in the shape of a long strip, and the mounting seat 31 is slidably mounted on the linear guide block 38 , and a lock is screwed on the mounting seat 31 Tighten the screw 39 , and the screw rod of the locking screw 39 is inserted into the sliding groove and pressed against the mounting seat 31 , thereby restricting the sliding of the mounting seat 31 relative to the linear guide block 38 . After the rotation of the first rotating plate 54 and the second rotating plate 64, the position of the optical axis of the objective lens at the front end of the endoscope relative to the target measuring plate will change. Loosen the locking screw 39 to manually control the sliding mounting seat 31. Move a small distance, so that the optical axis of the objective lens at the front end of the endoscope is aligned with the position of the target plate.

The left oblique pressure plate 361 integrally fixes the left connecting plate 362, the left connecting plate 362 is fixed with two left sliding rods 363, the left sliding rod 363 is slidably installed on the left sliding block 33, and the right oblique pressure plate 371 is integrally fixed to the right connecting plate 372, Two right sliding rods 373 are fixed on the right connecting plate 372 , and the right sliding rods 373 are slidably mounted on the right sliding block 34 .

The second rotating plate 64 is connected to the target mounting plate 66 for fixing the target plate through two connecting rods 65. One end of the two connecting rods 65 respectively fixes the upper left end and the upper right end of the second rotating plate 64. The target mounting plate 66 is fixed with two ball sockets 681, the ball socket 681 is provided with a ball socket 682, the two connecting rods 65 pass through the mounting holes of the target mounting plate 66, and the other ends of the two connecting rods 65 are fixed The ball head 683, the ball head 683 is located in the ball head groove 682, the connecting rod 65 is sleeved with a connecting rod compression spring 684, and the two ends of the connecting rod compression spring 684 respectively abut against the target measuring installation plate 66 and the second rotating plate 64, A fine-tuning cam 685 is rotatably installed on the second rotating plate 64, and the rotation of the fine-tuning cam 685 relative to the second rotating plate 64 can be restricted by increasing the locking and clamping, so as to avoid the fine-tuning cam 685 rotating freely without the fine-tuning state. The structural forms of the locking structure in the field to restrict the rotation of the structure are relatively common and have various forms, so they will not be described too much. A cam handle 686 is fixed to the fine adjustment cam 685 . With this structure, by rotating the cam handle 686, the fine-tuning cam 685 can move the second rotating plate 64 to fine-tune the angle of the second rotating plate 64. The main purpose is for the first rotating plate 54 and the target mounting plate 66 in the initial state. When it is not vertical, make fine adjustments to make the two relatively vertical, so as to facilitate the accuracy of subsequent operations. And the two connecting rods 65 pass through the mounting holes of the target mounting plate 66, and the other ends of the two connecting rods 65 are fixed with the ball head 683, and the ball head 683 is located in the ball head groove 682, that is, the second rotating plate 64 is realized. can be installed without affecting the fine adjustment of the angle of the second rotating plate 64 .

The target mounting plate 66 is provided with an insertion slot 67 for inserting the target plate.

A baffle plate 23 is fixed on the base 21 and the sliding seat 22, a guide sleeve 241 is fixed on the base 21, a sliding shaft 242 is fixed on the sliding seat 22, and the sliding shaft 242 is inserted and slidably installed in the guide sleeve 241, A sliding wheel 243 is rotatably installed on the lower end of the sliding seat 22, so that the sliding seat 22 can be pulled out in a straight line.

A double-axis manual fine-tuning slide table 4 is installed on the base 21 , and a vertical plate 41 is fixed on the double-axis manual fine-tuning slide table 4 . Or the distance is fine-tuned in the up and down direction, the second drive screw 61 is rotatably mounted on the vertical plate, the second connecting seat 62 is slidably mounted on the vertical plate, and the upper end of the second rotating plate 64 is hinged to the upper end of the vertical plate.

Further, as shown in FIG. 10 , during the operation of the medical endoscope optical performance detection method of this embodiment, during the counterclockwise rotation of the fixing device 3 , the fixing device 3 moves linearly at the same time, and the two are linked by the distance compensation mechanism. Thereby, the distance that the fixing device 3 needs to be adjusted subsequently is reduced, and the operation efficiency is improved.

The corresponding structure can also be improved as follows: the first rotating plate 54 is slidably installed with the linear guide block 38, the linear guide block 38 is provided with a sliding groove, the mounting seat 31 is elongated, and the mounting seat 31 is slidably installed on the linear guide. On the block 38, the mounting seat 31 is screwed with a locking screw 39, the screw rod of the locking screw 39 is inserted into the sliding groove and pressed on the mounting seat 31, thereby restricting the sliding of the mounting seat 31 relative to the linear guide block 38, and also includes a distance compensation mechanism , the distance compensation mechanism includes a first gear 551, a second gear 552, a third gear 553, a fourth gear 554 and a rack 555, the other end of the first support rod 53 is fixed with a first gear 551, a first rotating plate The second gear 552, the third gear 553 and the fourth gear 554 are rotated on the 54, the third gear 553 and the fourth gear 554 are coaxially fixed, the first gear 551 and the second gear 552 are meshed, and the second gear 552 and the third gear The gear 553 is engaged, and a rack 555 is fixed to the lower end of the linear guide block 38 , and the rack 555 is engaged with the fourth gear 554 . With this structure, when the first support rod 53 rotates, the gear rack 555 is driven to move through the meshing of each gear, thereby driving the linear guide block 38 and the mounting seat 31 to move linearly, thereby realizing distance compensation, thereby realizing the front end of the endoscope. The optical axis of the partial objective lens can be near a reasonable position.

The above content described in this specification is only an illustration of the present invention. Those skilled in the art to which the present utility model belongs can make various modifications or supplements to the described specific embodiments or substitute in similar manners, as long as they do not deviate from the contents of the present utility model description or exceed the definitions in the claims The scope of the invention should belong to the protection scope of the present invention.

Claims (6)

1. An initialization adjustment device for the detection of optical performance of a medical endoscope, characterized in that: it comprises a first angle adjustment device (5) for adjusting the angle of the endoscope, a second angle adjustment device for adjusting the angle of the target measuring plate, and realizes the first 1. The linkage mechanism (7) of the second angle adjustment device is synchronously linked and the fine adjustment structure (8) of the rotation of the fine adjustment linkage mechanism (7), wherein: the sliding seat (22) is linearly slidably installed on the base (21) above, the first angle adjustment device (5) comprises a first drive screw (51), a first drive nut, a first connection seat (52), a first support rod (53) and a first rotating plate (54), The first drive screw (51) is rotatably mounted on the sliding seat (22), the first drive screw (51) and the first drive nut are matched by threads, and the first drive nut is fixed on the first connection seat (52), the first The connecting seat (52) is linearly slidably mounted on the sliding seat (22), one end of the first connecting seat (52) is hinged to one end of the first support rod (53), and the other end of the first support rod (53) is hinged to the first rotation On the plate (54), the first rotating plate (54) is hinged on the sliding seat (22), the endoscope is fixed on the first rotating plate (54) by the fixing device (3), and the endoscope is fixed on the first rotating plate (54) by rotating the first transmission screw ( 51) rotate to drive the first transmission nut and the first connecting seat (52) to move linearly, thereby driving the first support rod (53) to support the first rotating plate (54), so that the first rotating plate (54) rotates, thereby To adjust the angle of the endoscope, the second angle adjustment device includes a second drive screw (61), a second drive nut, a second connection seat (62), a second support rod (63) and a second rotating plate (64) , the second drive screw (61) is rotatably installed on the base (21), the second drive screw (61) and the second drive nut are matched by threads, the second drive nut is fixed on the second connection seat (62), the second drive screw (61) Two connecting seats (62) are linearly slidably mounted on the base (21), one end of the second connecting seat (62) is hinged to one end of the second support rod (63), and the other end of the second support rod (63) is hinged to the second On the rotating plate (64), the second rotating plate (64) is hinged on the base (21), and the target measuring plate is mounted on the second rotating plate (64). In the horizontal state, the second rotating plate (64) is in a vertical state. By rotating the second transmission screw (61), the second transmission nut and the second connecting seat (62) are driven to move linearly, thereby driving the second support rod (63). ) supports the second rotating plate (64), so that the second rotating plate (64) rotates, so as to adjust the angle of the target measuring plate, the first driving screw (51) fixes the coarse adjustment rotary plate, and the first driving screw (51) through the linkage The second drive screw (61) of the mechanism (7) is arranged in linkage, the first drive screw (51) is arranged horizontally, the second drive screw (61) is arranged vertically, the first angle adjustment device (5) and the first angle adjustment device (5) During the rotation of the device (5), the following formulas are satisfied: α ^m =α ⁿ , and α ^m /β ^m = α ⁿ /β ⁿ , where: α ^m is the rotation angle of the first drive screw (51), β ^m is the rotation angle of the first rotating plate (54), α ⁿ is the rotation angle of the second drive screw (61), β ⁿ is the rotation angle of the second rotating plate (64). 2. The initialization adjusting device according to claim 1, characterized in that: the linkage mechanism (7) comprises a spline shaft (71) and a spline shaft sleeve (72), a spline shaft (71) and a spline shaft The sleeve (72) is sleeved, one end of the spline shaft (71) is fixed with the first drive screw (51), and the spline shaft sleeve (72) is fixed with a first bevel gear (73) and a second bevel gear (74) , the lower end of the second drive screw (61) is fixed with a third bevel gear (75), the third bevel gear (75) meshes with the first bevel gear (73), and the angle fine adjustment structure (8) includes an adjusting rod (81) ), the fine adjustment rotary disk (82) and the fourth bevel gear (83), the adjustment rod (81) is rotatably installed on the base (21), and one end of the adjustment rod (81) is fixed to the fine adjustment rotary disk (82), and the adjustment rod The other end of the (81) is connected to the fourth bevel gear (83), and the fourth bevel gear (83) meshes with the second bevel gear (74). 3. The initialization adjusting device according to claim 1, characterized in that: the second rotating plate (64) is connected to the target measuring plate (66) for fixing the target measuring plate through two connecting rods (65), and two One end of the connecting rod (65) is respectively fixed to the upper left end and the upper right end of the second rotating plate (64), two ball head seats (681) are fixed on the target measuring mounting plate (66), and the ball head seats (681) are provided with There is a ball head groove (682), the two connecting rods (65) pass through the mounting holes of the target mounting plate (66), and the other ends of the two connecting rods (65) are fixed with the ball head (683), the ball head ( 683) is located in the ball head groove (682), the connecting rod (65) is sleeved with a connecting rod compression spring (684), and the two ends of the connecting rod compression spring (684) abut against the target mounting plate (66) and the first Two rotating plates (64), a fine-tuning cam (685) is rotatably installed on the second rotating board (64), and a cam handle (686) is fixed on the fine-tuning cam (685). 4 . The initialization adjusting device according to claim 1 , wherein the target installation plate ( 66 ) is provided with an insertion slot ( 67 ) for inserting the target plate. 5 . 5. The initialization adjusting device according to claim 1, characterized in that: a linear guide block (38) is slidably installed on the first rotating plate (54), the linear guide block (38) is provided with a sliding groove, and the fixing device is slidably installed On the linear guide block (38), a distance compensation mechanism is further included, and the distance compensation mechanism includes a first gear (551), a second gear (552), a third gear (553), a fourth gear (554) and a tooth bar (555), a first gear (551) is fixed on the other end of the first support rod (53), and a second gear (552), a third gear (553) and a fourth gear are rotated on the first rotating plate (54). The gear (554), the third gear (553) and the fourth gear (554) are coaxially fixed, the first gear (551) and the second gear (552) are engaged, and the second gear (552) and the third gear (553) The lower end of the linear guide block (38) is fixed with a rack (555), and the rack (555) is engaged with the fourth gear (554). 6. The initialization adjusting device according to claim 1, characterized in that: a biaxial manual fine-tuning sliding table (4) is installed on the base (21), and a vertical plate is fixed on the biaxial manual fine-tuning sliding table (4). , By adjusting the dual-axis manual fine-tuning slide table (4), the vertical plate can be fine-tuned in the left-right or up-down direction relative to the base (21). The second drive screw (61) is rotated and installed on the vertical plate, and the second The connecting seat (62) is linearly slidably mounted on the vertical plate, and the upper end of the second rotating plate (64) is hinged on the upper end of the vertical plate.

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