Tool for aligning viewing angle of endoscope insertion tube

Abstract

The utility model discloses a tool for aligning the viewing angle of an endoscope insertion tube, which comprises a bottom plate, a tail end positioning piece, a head end positioning piece and a *-shaped target are sequentially arranged on the bottom plate, the tail of the endoscope insertion tube is positioned on the tail end positioning piece, the head of the insertion tube is positioned on the head end positioning piece, and the *-shaped target is positioned on the tail end positioning piece. And the main shaft of the insertion tube and the target center of the *-shaped target are positioned on the same straight line. The tool has the advantages that the visual direction angle of the endoscope insertion tube is aligned through the tool in the technical scheme, the visual direction angle smaller than 1 degree accounts for 67%, the visual direction angle smaller than 2 degrees accounts for 93%, the visual direction angle smaller than 3 degrees accounts for 100%, and compared with the prior art and the industrial standard, the visual direction angle is greatly reduced, and meanwhile production efficiency is improved by 42%.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment and relates to an assembly tool for a rigid endoscope, in particular to a tool for adjusting the viewing angle of an insertion tube of a rigid endoscope. Technical Background

[0002] With the development of the times and the advancement of medical technology, endoscopes that can be inserted into the human body to directly face the lesions for diagnosis and treatment have come into being. The shooting and display components of the endoscope are the camera and the display screen respectively. The camera is set at the head of the insertion tube where the endoscope is inserted into the human body. The inner wall of the hollow insertion tube head fixes the camera through a bracket seat. The adjustment mechanism on the bracket seat can adjust the direction of the camera. The viewing angle is the angle formed by the visual axis of the optical mirror and the main axis of the optical mirror body. The so-called visual axis of the optical mirror is the visual axis of the camera. Since the camera is set in the insertion tube, the so-called main axis of the optical mirror body is the main axis of the insertion tube.

[0003] During the production and assembly of the existing rigid endoscopes, the viewing angle is basically adjusted manually by visual adjustment, so it is difficult to adjust the viewing angle accurately. Based on the production conditions of the existing technology, my country's State Food and Drug Administration issued the YY0068.1-2008 medical industry standard on April 25, 2008, stipulating that the viewing angle tolerance of rigid endoscopes is ±10°, and this standard is still used today. The existence of the viewing angle will inevitably cause the actual position of the lesion to deviate from the position of the image. From a medical perspective, the viewing angle tolerance of ±10° stipulated in this standard is a bit too large and cannot meet the doctor's requirements for the viewing angle of the endoscope during diagnosis, sampling or surgery. Summary of the invention

[0004] In order to overcome the above defects, the technical problem to be solved by the utility model is: to provide an endoscope insertion tube viewing angle adjustment tool so as to significantly reduce the viewing angle of the rigid endoscope, thereby facilitating the doctor's diagnosis, sampling or surgery.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an endoscope insertion tube viewing angle adjustment tool, which includes a base plate, on which a tail end positioning piece, a head end positioning piece, and a crossbar are sequentially arranged, the tail of the endoscope insertion tube is positioned on the tail end positioning piece, the head of the insertion tube is positioned on the head end positioning piece, and the main axis of the insertion tube and the bull's eye of the crossbar target are located in a straight line.

[0006] After the camera is connected to the display screen, a red cross will be displayed on the display screen. The cross center of the red cross is the shooting center of the camera, the bull's eye of the cross represents the actual position of the lesion, and the center of the red cross represents the image position of the lesion. The tail end positioning piece, the head end positioning piece, and the cross target are arranged in sequence on the bottom plate. As long as the positions of the tail end positioning piece, the head end positioning piece, and the cross target are set, it can be ensured that the axis of the insertion tube passes through the bull's eye of the cross target. Then, the insertion tube that needs to adjust the viewing angle is placed on the tail end positioning piece and the head end positioning piece according to the specified requirements, and the wiring harness of the camera is plugged into the display screen. The bracket seat can be adjusted to change the direction of the camera so that the center point of the red cross on the display screen is close to the bull's eye of the cross target until it overlaps, and then the relative position of the camera and the insertion tube is fixed. In this way, the viewing angle of the endoscope insertion tube can be greatly reduced.

[0007] As a further technical solution, the bottom plate is provided with a linear guide rail arranged parallel to the axis of the insertion tube, and the crossbar target is slidably connected to the linear guide rail. In this way, the distance between the camera inside the insertion tube and the crossbar target can be adjusted by sliding the crossbar target back and forth on the linear guide rail, so that the degree of overlap between the center point of the red cross on the display screen and the center of the crossbar target can be verified. If the overlap is found to be insufficient, fine adjustment can be continued, so as to ensure the reliability of the viewing angle adjustment.

[0008] As a further technical solution, the linear guide is provided with a slider that can slide back and forth along the linear guide, the slider is fixedly connected to a first slide rail perpendicular to the bottom plate, the crossbar target is slidably connected to the first slide rail, and the crossbar surface of the crossbar plate faces the insertion tube. Endoscopes have different specifications and models, and the diameters of the insertion tubes of endoscopes of different specifications and models are also different. Therefore, the height of the crossbar target needs to be adjusted according to the different specifications and models of the endoscope, so as to improve the versatility of the tooling of this technical solution, thereby reducing the use cost of the adjustment tooling.

[0009] As a further technical solution, the base plate is fixedly connected with a second slide rail perpendicular to the base plate at the position of the head end positioning member, and the head end positioning member is slidably connected to the second slide rail up and down. Different insertion tubes have different diameter differences between the head end and the tail end. Therefore, in order to ensure that the plate surface of the M-shaped target is vertical, the relative height difference between the head end positioning member and the tail end positioning member needs to be adjusted. The second slide rail can be set at the position of the head end positioning member or the position of the tail end positioning member. The technical solution is preferably at the position of the head end positioning member. Using a slide rail to adjust the height of the positioning member is convenient and quick.

[0010] As a further technical solution, the bottom plate is provided with limit screws at both ends of the linear guide rail, which can ensure that the target will not unexpectedly slide out of the linear guide rail, so that the operator can concentrate on adjusting the viewing angle, thereby improving the labor productivity of the operator.

[0011] As a further technical solution, the tail end positioning piece and the head end positioning piece are both provided with a "U" shaped positioning groove, and the two opposite side walls of the positioning groove are respectively provided with coaxially arranged glass bead screws, and the glass beads of the glass bead screws are all facing the middle of the positioning groove. It is very convenient and quick to use the positioning groove to position the insertion tube; because the insertion tube is inserted into the patient's body, burrs and scratches on the outer surface of the insertion tube are not allowed to occur. Using glass bead screws to tighten the insertion tube can ensure that the outer surface of the insertion tube can still remain smooth during the process of adjusting the viewing angle.

[0012] The beneficial effects of the utility model are as follows: the endoscope insertion tube adopts the tooling of the present technical solution to adjust the viewing angle. According to the statistics of three months of test data, the viewing angle is less than 1° in 67%, the viewing angle is less than 2° in 93%, and the viewing angle is less than 3° in 100%. Compared with the existing technology and industry standards, the viewing angle has been greatly reduced, and the production efficiency has also been improved by 42%. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural stereoscopic schematic diagram of the utility model tooling;

[0014] Figure 2 It is a schematic diagram of the rice character surface of the rice character target of the utility model;

[0015] Figure 3 It is a schematic diagram of a red cross displayed on a display by the camera of the utility model;

[0016] Figure 4 It is a schematic diagram showing that the center of the crosshair target of the utility model coincides with the center of the red cross.

[0017] In the figure: base plate 1, glass bead screw 2, tail end positioning piece 3, positioning groove 4, second slide rail 5, insertion tube 6, head end positioning piece 7, Pozidriv target 8, first slide rail 9, slider 10, linear guide rail 11, limit screw 12. DETAILED DESCRIPTION

[0018] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings.

[0019] Embodiment: A tool for adjusting the viewing angle of an endoscope insertion tube, as shown in the figure, comprises a base plate 1, an insertion tube 6, and a display screen (not shown in the figure). A second slide rail 5 perpendicular to the base plate 1 is respectively provided at one end and the middle of the base plate 1, and a horizontally arranged linear guide rail 11 is provided at the other end of the base plate 1. A tail end positioning member 3 movable up and down is connected to the second slide rail 5 located at one end of the base plate 1, and a head end positioning member 7 movable up and down is connected to the second slide rail 5 located in the middle of the base plate 1. A slider 10 movable back and forth along the linear guide rail 11 is connected to the linear guide rail 11, a first slide rail 9 perpendicular to the base plate 1 is fixedly provided on the slider 10, a M-shaped target 8 movable up and down is connected to the first slide rail 9, and the M-shaped surface of the M-shaped target 8 faces the tail end positioning member 3, and the tail end positioning member 3 and the head end positioning member 7 are both provided with a "U"-shaped A positioning groove 4, wherein coaxially arranged glass bead screws 2 are respectively arranged on opposite side walls of the positioning groove 4, and the glass beads of the glass bead screws 2 are all facing the middle of the positioning groove 4. The tail end of the endoscope insertion tube 6 is tightly fixed in the middle of the two glass bead screws 2 in the positioning groove 4 of the tail end positioning piece 3, and the head end of the insertion tube 6 is tightly fixed in the middle of the two glass bead screws 2 in the positioning groove 4 of the head end positioning piece 7. The relative positions of the tail end positioning piece 3, the head end positioning piece 7 and the Mi-shaped target 8 are adjusted and fixed so that the axis of the insertion tube 6 passes through the bull's eye of the Mi-shaped target 8, the axis of the insertion tube 6 is perpendicular to the plane where the Mi-shaped target 8 is located, the linear guide rail 11 is arranged parallel to the axis of the insertion tube 6, and the bottom plate 1 is respectively provided with limit screws 12 at the two end positions close to the linear guide rail 11 to prevent the slider 10 from sliding out of the linear guide rail 11.

[0020] Method and steps for adjusting the viewing angle of the endoscope insertion tube 6: 1. Tighten the tail and one end of the head of the insertion tube 6 whose viewing angle needs to be adjusted between the two glass bead screws 2 in the positioning grooves 4 of the tail end positioning member 3 and the head end positioning member 7 respectively; 2. Plug the wiring harness of the camera in the head of the insertion tube 6 into the display screen; 3. Adjust the bracket for supporting the camera until the center of the cross target 8 on the display screen coincides with the center of the red cross on the display screen; 4. Move the cross target 8 back and forth to verify the degree of coincidence between the center point of the red cross on the display screen and the center of the cross target 8. If the coincidence is found to be insufficient, continue fine-tuning; 5. Take out qualified products and repeat steps 1 to 5.

[0021] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

[0022] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An endoscope insertion tube viewing angle adjustment tool, characterized in that: It includes a bottom plate, on which a tail end positioning piece, a head end positioning piece, and a Mi-shaped target are arranged in sequence. The tail of the endoscope insertion tube is positioned on the tail end positioning piece, the head of the insertion tube is positioned on the head end positioning piece, and the main axis of the insertion tube and the bull's eye of the Mi-shaped target are located in a straight line.

2. The endoscope insertion tube viewing angle adjustment tool according to claim 1, characterized in that: A linear guide rail is arranged parallel to the axis of the insertion tube on the bottom plate, and the Pozidriv target is slidably connected to the linear guide rail.

3. The endoscope insertion tube viewing angle adjustment tool according to claim 2, characterized in that: The linear guide rail is provided with a slider which can slide back and forth along the linear guide rail, the slider is fixedly connected with a first slide rail perpendicular to the base plate, the cross target is slidably connected to the first slide rail up and down, and the cross face of the cross target faces the insertion tube.

4. The endoscope insertion tube viewing angle adjustment tool according to any one of claims 2 to 3, characterized in that: The bottom plate is fixedly connected with a second slide rail perpendicular to the bottom plate at the position of the head end positioning member, and the head end positioning member is slidably connected to the second slide rail up and down.

5. The endoscope insertion tube viewing angle adjustment tool according to any one of claims 2 to 3, characterized in that: The bottom plate is respectively provided with limit screws at two end positions close to the linear guide rail.

6. The endoscope insertion tube viewing angle adjustment tool according to claim 4, characterized in that: The bottom plate is respectively provided with limit screws at two end positions close to the linear guide rail.

7. The endoscope insertion tube viewing angle adjustment tool according to any one of claims 1 to 3, characterized in that: The tail end positioning piece and the head end positioning piece are both provided with a "U"-shaped positioning groove, and coaxially arranged glass bead screws are respectively provided on the opposite side walls of the positioning groove, and the glass beads of the glass bead screws are all facing the middle of the positioning groove.

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