A rapid detection instrument for optical eyepiece imaging performance of minimally invasive surgery

Abstract

This utility model discloses a rapid testing instrument for the imaging performance of optical eyepieces used in minimally invasive surgery, including a testing frame (1). One end of the testing frame (1) is provided with a camera bracket (2), and a CCD camera (3) is provided on the camera bracket (2). The other end of the testing frame (1) is provided with a light source bracket (4), and a light source lamp (5) is provided on the light source bracket (4). The testing frame (1) is provided with a track groove (6). Between the CCD camera (3) and the light source, and along the track groove (6, there is an eyepiece support block (7) for mounting the eyepiece end of the endoscope and an objective lens support block (8) for mounting the objective lens end of the endoscope. This utility model has a simple structure, is easy to operate quickly, improves the convenience of testing, and realizes batch testing of the imaging performance of optical eyepieces.

Description

Technical Field

[0001] This utility model relates to the field of optical lens equipment, specifically a rapid testing instrument for the imaging performance of an optical eyepiece used in minimally invasive surgery. Background Technology

[0002] In the field of minimally invasive surgery, optical eyepieces, as core imaging components, are characterized by their complex structure, high precision, and high cost. Their imaging performance directly affects the clarity of the surgical field and the accuracy of surgical procedures, having a crucial impact on surgical outcomes. Furthermore, the reprocessing of optical eyepieces after use involves multiple specialized technologies in the sterilization supply center, further highlighting their importance in the medical process. Currently, the imaging performance testing of optical eyepieces used in minimally invasive surgery mainly includes two indicators: image clarity and field of view. Image clarity checks whether the eyepiece image is clear, without blurring or distortion, while the field of view checks whether the eyepiece's field of view is complete, without obstruction or narrowing.

[0003] However, existing methods for testing the imaging performance of optical eyepieces have certain shortcomings: while existing traditional optical testing equipment can meet the requirements for testing accuracy to a certain extent, they generally suffer from complex structures and cumbersome operations, making it difficult to meet the actual needs of rapid and efficient testing of optical eyepieces in the field of minimally invasive surgery. At present, the sterilization supply center mainly relies on traditional visual inspection and imaging inspection with a magnifying glass with a light source, which has problems such as low inspection efficiency, strong subjectivity, and insufficient accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a rapid testing instrument for the imaging performance of optical eyepieces used in minimally invasive surgery. This invention has a simple structure, is easy to learn and operate quickly, improves the convenience of testing, and enables batch testing of the imaging performance of optical eyepieces.

[0005] The technical solution of this utility model is as follows: A rapid testing instrument for the imaging performance of an optical eyepiece used in minimally invasive surgery includes a testing frame. One end of the testing frame is provided with a camera bracket, on which a CCD camera is mounted. The other end of the testing frame is provided with a light source frame, on which a light source lamp is mounted. The testing frame is provided with a track groove. Between the CCD camera and the light source, and along the track groove, are provided an eyepiece support block for mounting the eyepiece end of a endoscope and an objective lens support block for mounting the objective lens end of the endoscope. The eyepiece end on the eyepiece support block is aligned with the visual focal point of the CCD camera, and the objective lens end on the objective lens support block faces the light source lamp.

[0006] In the aforementioned rapid testing instrument for the imaging performance of optical eyepieces used in minimally invasive surgery, the camera support includes an arched frame mounted on the testing frame, and the arched frame is provided with an annular clamp for securing the CCD camera.

[0007] In the aforementioned rapid testing instrument for the imaging performance of optical eyepieces used in minimally invasive surgery, the light source frame includes right-angle frames symmetrically arranged on the testing frame, and the light source lamps are arranged between the right-angle frames via an angle adjustment structure.

[0008] In the aforementioned rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery, the angle adjustment structure includes a shaft disposed on the side of the light source lamp, the shaft passing through a right-angle seat, the right-angle seat having an arc-shaped adjustment groove arranged around the shaft, and the side of the light source lamp having a fixing pin that passes through the arc-shaped adjustment groove.

[0009] In the aforementioned rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery, the eyepiece support block includes a first main block, the end of the first main block is provided with a guide positioning component that cooperates with the track groove, the first main block is provided with a first V-shaped block, the groove of the first V-shaped block is provided with a trapezoidal strip that fits with the groove of the eyepiece itself, and the two sides of the first V-shaped block are provided with lateral supports for fixing the eyepiece.

[0010] In the aforementioned rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery, the objective lens support includes a second main body block. The end of the second main body block is provided with a guide positioning component that cooperates with the track groove. The second main body block is provided with a second V-shaped block. The groove of the second V-shaped block is provided with a triangular strip that fits with the groove of the objective lens itself.

[0011] In the aforementioned rapid testing instrument for imaging performance of optical eyepieces for minimally invasive surgery, the guide positioning component includes a guide plate disposed on the lower side of the end of the first main block or the second main block and fitting with the track groove. The end of the first main block or the second main block is also provided with a fixing bolt that passes through the track groove.

[0012] In the aforementioned anti-slip intravenous infusion set, the surface of the extension section has an arc-shaped structure.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] 1. In this invention, the endoscope is placed on a support block, with the eyepiece end positioned on the eyepiece support block and the objective lens end on the objective lens support block. The eyepiece end is aligned with the visual focal point of the CCD camera, and the objective lens end is aligned with the light source. Simultaneously, the positions of the objective lens support block and the eyepiece support block are adjusted so that the light emitted from the light source is clearly projected onto the CCD camera after passing through the objective lens and eyepiece. The imaging performance of the eyepiece is judged by the final digital image, mainly checking the image sharpness and field of view. The image is checked for clarity, blurriness, distortion, and the completeness of the field of view, without obstruction or narrowness. If these two indicators are met, the eyepiece's imaging performance is good. This invention involves fewer components, has a simple structure, and is easy to operate quickly, improving the convenience of testing. It can quickly test a certain batch of eyepieces.

[0015] 2. With the help of the trapezoidal strip's fitting design and the side bracket's quick fixing method, operators can easily set up and fix the eyepiece without complicated operations, greatly shortening the clamping time of a single eyepiece and improving the efficiency of the inspection process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the angle adjustment structure;

[0018] Figure 3 This is a schematic diagram of the eyepiece support block;

[0019] Figure 4 This is a schematic diagram of the objective lens support.

[0020] The markings in the attached diagram are as follows: 1-Detection frame, 2-Camera bracket, 3-CCD camera, 4-Light source frame, 5-Light source lamp, 6-Railway groove, 7-Eyepiece support block, 8-Objective lens support block, 9-Arch frame, 10-Ring hoop, 11-Right angle frame, 12-Shaft, 13-Arc-shaped adjustment groove, 14-Fixing nail, 15-First main body block, 16-Guide positioning component, 17-First V-block, 18-Trapezoidal strip, 19-Side support, 20-Second main body block, 21-Second V-block, 22-Triangular strip, 23-Guide plate, 24-Fixing bolt component, 25-Main unit, 26-Display. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0022] Example: A rapid testing instrument for the imaging performance of an optical eyepiece used in minimally invasive surgery, including a testing frame 1, as shown in the attached diagram. Figure 1As shown, a camera bracket 2 is installed at one end of the inspection frame 1. The end of the camera bracket has a support leg, which is connected to the inspection frame by bolts. A CCD camera 3 is installed on the camera bracket 2. The camera bracket 2 includes an arched frame 9 set on the inspection frame 1. An annular clamp 10 for clamping the CCD camera 3 is installed on the arched frame 9. The CCD camera 3 is placed on the camera bracket and then clamped by the arched frame. The end of the arched frame is connected to the camera bracket by bolts. The CCD camera is a MER-200-14GM camera from Daheng Imaging, which has 2 megapixels, a resolution of 1600×1200, a frame rate of 14fps, and is equipped with a GigE interface. It supports stable operation for a long time and has a dynamic range of 60dB, which can effectively distinguish the grayscale difference between the dirt on the eyepiece surface and the normal imaging area, avoiding misjudgment caused by light fluctuations. A light source frame 4 is installed at the other end of the testing frame 1, and a light source lamp 5 is provided on the light source frame 4; the light source frame 4 includes right-angle frames 11 symmetrically arranged on the testing frame 1, and the light source lamp 5 is arranged between the right-angle frames 11 via an angle adjustment structure, the angle adjustment structure including a shaft 12 arranged on the side of the light source lamp 5, as shown in the attached figure. Figure 2As shown, the shaft 12 passes through a right-angle seat, and an arc-shaped adjustment groove 13 is installed on the right-angle seat around the shaft 12. The side of the light source 5 has a fixing pin 14 that passes through the arc-shaped adjustment groove 13. By adjusting the angle, the light emitted by the light source can be more accurately aligned with the optical center axis of the objective lens and eyepiece, ensuring that the light passes through the optical element in the best path, reducing energy loss or imaging deviation caused by optical path deviation, providing stable and uniform incident light for the CCD camera, and ensuring image quality. In specific operation, the light source can rotate through the shaft, the fixing pin is unscrewed, the light source is rotated, and after determining the angle of the light source, the fixing pin is tightened. The detection frame 1 has a track groove 6. Between the CCD camera 3 and the light source, along the track groove 6, is an eyepiece support block 7 for mounting the eyepiece end of the endoscope and an objective lens support block 8 for mounting the objective lens end of the endoscope. The eyepiece end on the eyepiece support block 7 is aligned with the visual focal point center of the CCD camera 3, and the objective lens end on the objective lens support block 8 is aligned with the light source 5. The CCD camera is also connected to the host unit 25 and the display 26. The CCD transmits the captured image information of eyepiece stains to the host unit, which analyzes the data and compares it with preset cleanliness standards. Key parameters include color accuracy, light transmittance, focus, fiber optics, field of view, and angle of view. The comparison results are fed back to the display in real time for operators or quality inspectors to observe, and inspection records are automatically generated. After processing, the display clearly indicates whether the product is qualified or unqualified, and the corresponding qualified and unqualified product codes are simultaneously entered into the archive. The materials are then transferred to different storage areas to achieve efficient quality inspection. During the inspection process, the CCD and host unit perform calculations simultaneously, and each quality inspection result is recorded in real time to the storage disk for easy data collection and traceability later. Furthermore, by identifying defects in the cleaning quality, it is possible to effectively prevent subsequent users from misusing unqualified eyepieces, further ensuring safety.

[0023] The eyepiece support 7 includes a first main body block 15, as shown in the attached figure. Figure 3As shown, the end of the first main block 15 is provided with a guide positioning member 16 that cooperates with the track groove 6. The first main block 15 is provided with a first V-shaped block 17. The groove of the first V-shaped block 17 has a trapezoidal strip 18 that fits into the groove of the eyepiece itself. The eyepiece has a columnar structure. When the eyepiece is placed in the first V-shaped block, the two sides of the eyepiece are in point contact with the first V-shaped block. Part of the trapezoidal strip will be inserted into the groove of the eyepiece itself. The groove cross-section of the eyepiece itself is trapezoidal. The first V-block 17 has lateral supports 19 on both sides for fixing the eyepiece. The lateral supports include elastic plates, the ends of which are connected to the side of the first V-block by screws. The upper end of the elastic plate has a side block that fits into the groove of the eyepiece side itself. When installing the eyepiece, the side block is opened and the eyepiece is placed in the first V-block. Then the side block fits into the groove of the eyepiece side. With the help of the trapezoidal strip fitting design and the quick fixing method of the lateral supports, the operator can easily complete the installation and fixing of the eyepiece without complicated operations, which greatly shortens the clamping time of a single eyepiece and improves the efficiency of the inspection process.

[0024] The objective lens support 8 includes a second main body block 20, as shown in the attached figure. Figure 4 As shown, the end of the second main body block 20 is equipped with a guide positioning component 16 that mates with the track groove 6. The second main body block 20 is provided with a second V-shaped block 21, and the groove of the second V-shaped block 21 is provided with a triangular strip 22 that fits into the groove of the objective lens itself. The circumferential surface of the objective lens itself has a groove with a triangular cross-section, and the triangular strip in the second V-shaped block 21 mainly restricts the axial movement of the objective lens.

[0025] The guide positioning component 16 includes a guide plate 23 disposed on the lower side of the end of the first main block 15 or the second main block 20 and fitting with the track groove 6. The first main block and the second main block will move along the track groove through the guide plate to achieve movement limit and ensure that the two supports will not deflect at both ends when they are moved and adjusted. The end of the first main block 15 or the second main block 20 is also provided with a fixing bolt 24 that passes through the track groove 6. On the one hand, after adjusting the position of the eyepiece or objective lens support block along the track groove using the guide plate, tightening the fixing bolts will firmly lock the support block in its current position, preventing displacement of the support block due to slight vibration of the equipment, light impact, or other external forces during the inspection process. This ensures the relative position stability between the eyepiece, objective lens, CCD camera, and light source, guaranteeing that the optical path is always in a precise alignment state. On the other hand, when it is necessary to readjust the position of the support block, loosening the fixing bolts allows the support block to move freely along the track groove, making operation convenient. Tightening provides sufficient locking force to prevent the support block from loosening during the inspection process, thus meeting the position adjustment requirements under different inspection needs and ensuring the stability of the inspection process. The endoscopes come in various models, with differences in the diameter and length of their objective and eyepiece ends. To accommodate different endoscope specifications, multiple objective and eyepiece supports are provided. These objective and eyepiece supports are connected to the testing frame via fixing bolts. The fixing bolts can be removed and replaced with eyepiece and objective supports corresponding to the endoscope to ensure stable support for the eyepiece and objective ends of the endoscope.

[0026] The working principle of this utility model is as follows: Before testing, the endoscope to be tested is placed on the support block. The eyepiece end of the endoscope is mounted on the first V-shaped block 17 of the eyepiece support block 7. Initial positioning is achieved by the fit between the trapezoidal strip 18 in the groove of the first V-shaped block 17 and the groove of the eyepiece itself. Then, the eyepiece is further fixed by the lateral supports 19 on both sides to ensure that one end of the eyepiece is accurately aligned with the visual focus center of the CCD camera 3. At the same time, the objective lens end of the endoscope is placed in the second V-shaped block 21 of the objective lens support block 8. Positioning is completed by the cooperation between the triangular strip 22 in the groove of the second V-shaped block 21 and the triangular groove of the objective lens itself. Subsequently, the guide positioning component 16... The guide plate 23 is used to adjust the positions of the eyepiece support block 7 and the objective lens support block 8 along the track groove 6 of the inspection frame 1, so that the objective lens end faces the light source lamp 5. After adjustment, the fixing bolt 24 is tightened to firmly lock the two supports, ensuring that a stable optical path is formed between the eyepiece, objective lens, CCD camera 3 and light source lamp 5. Then, according to the inspection requirements, the angle of the light source lamp 5 is adjusted by the angle adjustment structure of the light source frame 4: loosen the fixing nail 14, rotate the light source lamp 5 around the axis 12, so that the light emitted by the light source lamp 5 is guided by the arc adjustment groove 13 and projected onto the objective lens at the optimal angle. After the angle is determined, tighten the fixing nail 14 to fix the position of the light source lamp 5. During testing, the light emitted by the light source 5 passes through the objective lens and eyepiece in sequence. The main focus is on testing the image clarity and field of view. If the eyepiece has good imaging performance, the light can be projected onto the CCD camera 3 evenly and clearly, and the field of view of the image is complete. If the eyepiece has imaging performance defects (such as distortion or blur) or has stains, dust or other impurities on its surface, it will cause light scattering, obstruction or abnormal propagation path, resulting in dark spots, light spots, blurry shadows, irregular light-blocking areas or distortion in the image captured by the CCD camera 3, or the field of view of the image is incomplete, with obstruction or narrow field of view.

Claims

1. A rapid testing instrument for the imaging performance of an optical eyepiece used in minimally invasive surgery, comprising a testing frame (1), characterized in that: One end of the testing frame (1) is provided with a camera bracket (2), and a CCD camera (3) is provided on the camera bracket (2). The other end of the testing frame (1) is provided with a light source bracket (4), and a light source lamp (5) is provided on the light source bracket (4). The testing frame (1) is provided with a track groove (6). Between the CCD camera (3) and the light source and along the track groove (6), there is an eyepiece support block (7) for mounting the eyepiece end of the endoscope and an objective lens support block (8) for mounting the objective lens end of the endoscope. The eyepiece end on the eyepiece support block (7) is aligned with the visual focus center of the CCD camera (3), and the objective lens end on the objective lens support block (8) is aligned with the light source lamp (5).

2. The rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery according to claim 1, characterized in that: The camera bracket (2) includes an arched frame (9) set on the inspection frame (1), and the arched frame (9) is provided with an annular hoop (10) for clamping the CCD camera (3).

3. The rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery according to claim 1, characterized in that: The light source frame (4) includes right-angle frames (11) symmetrically arranged on the detection frame (1), and the light source lamps (5) are arranged between the right-angle frames (11) via an angle adjustment structure.

4. The rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery according to claim 3, characterized in that: The angle adjustment structure includes a shaft (12) disposed on the side of the light source lamp (5), the shaft (12) passing through a right angle seat, the right angle seat having an arc-shaped adjustment groove (13) arranged around the shaft (12), and the side of the light source lamp (5) having a fixing nail (14) arranged through the arc-shaped adjustment groove (13).

5. The rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery according to claim 1, characterized in that: The eyepiece support block (7) includes a first main block (15), the end of the first main block (15) is provided with a guide positioning component (16) that cooperates with the track groove (6), the first main block (15) is provided with a first V-shaped block (17), the groove of the first V-shaped block (17) is provided with a trapezoidal strip (18) that fits with the groove of the eyepiece itself, and the two sides of the first V-shaped block (17) are provided with lateral supports (19) for fixing the eyepiece.

6. The rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery according to claim 1, characterized in that: The objective lens support block (8) includes a second main block (20). The end of the second main block (20) is provided with a guide positioning component (16) that cooperates with the track groove (6). The second main block (20) is provided with a second V-shaped block (21). The groove of the second V-shaped block (21) is provided with a triangular strip (22) that fits with the groove of the objective lens itself.

7. The rapid testing instrument for imaging performance of optical eyepieces used in minimally invasive surgery according to claim 6, characterized in that: The guide positioning component (16) includes a guide plate (23) disposed on the lower side of the end of the first main block (15) or the second main block (20) and fitted with the track groove (6). The end of the first main block (15) or the second main block (20) is also provided with a fixing bolt (24) that passes through the track groove (6).

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