A pixel definition adjusting device for endoscope rigid scope

Abstract

This utility model discloses a pixel clarity adjustment device for rigid endoscopes, relating to the field of endoscope technology. It includes an endoscope body, a light cone positioned below the endoscope body, optical fibers inside two sets of light-guiding hoses, two sets of sliding grooves symmetrically arranged on the inner wall of the outer side of the eyepiece cavity, a first observation lens inside the eyepiece cavity, a second observation lens inside the adjustment pipe, limiting pins and return springs inside both sets of fixing sleeves, and an eyepiece cover at the front end of the adjustment pipe. This pixel clarity adjustment device for rigid endoscopes adjusts the focal length between the second and first observation lenses by rotating the adjustment pipe, causing the limiting pins to slide within the sliding grooves. The two sets of connecting pipes, in conjunction with the optical fibers, enhance light intensity, thereby improving the clarity during observation.

Description

Technical Field

[0001] This utility model relates to the field of endoscope technology, and in particular to a pixel clarity adjustment device for rigid endoscopes. Background Technology

[0002] Rigid endoscopes play a crucial role in modern medical diagnosis and surgery, providing doctors with an effective way to directly observe internal tissues and organs. With the continuous advancement of medical technology, increasingly stringent requirements have been placed on their imaging quality, among which pixel resolution is one of the core indicators for measuring imaging effect.

[0003] Existing rigid endoscopes produce blurry images during installation and use, making it impossible for staff to adjust the pixel clarity of the eyepiece. This necessitates replacing lenses with different resolutions for observation, resulting in low work efficiency and negatively impacting user experience. To address the shortcomings of existing technologies, we propose a pixel clarity adjustment device for rigid endoscopes. Utility Model Content

[0004] The main objective of this invention is to provide a pixel clarity adjustment device for rigid endoscopes, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A pixel resolution adjustment device for a rigid endoscope includes an endoscope body, a working tube at the rear end of the endoscope body, an objective lens body at the rear end of the working tube, a light cone at the lower part of the endoscope body, two sets of connecting tubes at the bottom of the light cone, a light guide tube at one end of each of the two sets of connecting tubes, and optical fibers inside each of the two sets of light guide tubes. An eyepiece cavity is located at the front end of the endoscope body, two sets of sliding grooves are symmetrically arranged on the inner wall of the outer side of the eyepiece cavity, a first fixing ring is located on the inner side of the eyepiece cavity, and a first observation lens is located inside the eyepiece cavity. One edge of the first observation lens... The first observation lens abuts against the first fixing ring. The thickness of the first observation lens is greater than the distance from the first fixing ring to the front end of the eyepiece cavity. An adjustment channel is provided on the outer side of the eyepiece cavity. A second fixing ring is provided on the inner side of the adjustment channel. A second observation lens is provided inside the adjustment channel. Two sets of fixing sleeves are symmetrically arranged on the outer side of the adjustment channel. Each set of fixing sleeves is provided with a limiting pin and a return spring. The limiting pin slides inside the slide groove. A convex ring is provided on the outer surface of the front end of the adjustment channel. An eyepiece cover is provided at the front end of the adjustment channel. A fixing groove is provided on the inner wall of the rear end of the eyepiece cover. The convex ring is engaged inside the fixing groove.

[0007] Preferably, the working endoscope tube is fixedly disposed at the rear end of the endoscope body, the objective lens body is detachably mounted at the rear end of the working endoscope tube, and the light cone is fixedly disposed below the endoscope body.

[0008] Preferably, the connecting tube is fixedly disposed below the light cone, the light guide hose is detachably installed below the connecting tube, and the optical fiber is detachably installed inside the light guide hose.

[0009] Preferably, the eyepiece cavity is fixedly disposed at the front end of the endoscope body, the first observation mirror is embedded inside the eyepiece cavity, and the fixing sleeve is fixedly disposed on the outside of the adjustment tube.

[0010] Preferably, the fixing sleeve and the limiting pin are detachably installed inside the fixing sleeve, and the adjusting pipe slides outside the eyepiece cavity through the limiting pin and the sliding groove.

[0011] Preferably, the second observation lens is embedded inside the adjustment pipe, and the eyepiece cover is detachably connected to the adjustment pipe through a fixed groove and a convex ring. The eyepiece cover is made of rubber.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the working lens tube is inserted into the body, and the image scanned by the objective lens body is transmitted through the first observation lens in conjunction with the wire bundle inside the working lens tube. The focal length between the second observation lens and the first observation lens can be adjusted by rotating the adjustment pipe, thereby adjusting the clarity during use.

[0014] 2. In this utility model, two sets of connecting tubes are used in conjunction with optical fibers. When the lighting effect of one set of optical fibers is poor, the other set of optical fibers can be turned on to provide lighting, thereby enhancing the illuminance and improving the clarity of the pixels. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the first observation mirror and the main body of the endoscope of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the second observation mirror and the adjustment pipe of this utility model;

[0019] Figure 5 This is a schematic diagram of the eyepiece cover structure of this utility model.

[0020] In the diagram: 1. Endoscope body; 2. Working endoscope tube; 3. Optical cone; 4. Connecting tube; 5. Eyepiece cavity; 6. Slide groove; 7. First fixing ring; 8. First observation lens; 9. Adjustment pipe; 10. Second fixing ring; 11. Convex ring; 12. Second observation lens; 13. Fixing sleeve; 14. Limiting pin; 15. Return spring; 16. Eyepiece cover; 17. Fixing groove; 18. Light guide hose; 19. Optical fiber; 20. Objective lens body. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Example 1, as Figures 1-5 As shown, a pixel clarity adjustment device for a rigid endoscope includes an endoscope body 1 and a working tube 2 at the rear end of the endoscope body 1. The working tube 2 is inserted into the body. The image scanned by the working tube 2 is transmitted to the first observation lens 8 through the objective lens body 20 and the wire bundle inside the working tube 2. Then, the optical fiber 19 is connected to the power supply to provide illumination to the inside of the working tube 2. The operator can observe the situation inside the body by bringing their eye close to the eyepiece cover 16. When the operator needs to adjust the clarity of the device, they only need to manually rotate the adjustment pipe 9, which drives the limiting pin 14 to slide inside the slide groove 6. At this time, the adjustment pipe 9 extends forward, and the distance between the second observation lens 12 and the first observation lens 8 increases. During the rotation, the focal length of the second observation lens 12 and the first observation lens 8 can be adjusted. The operator must keep observing the eyepiece cover 16. When the image becomes clear, the rotation of the adjustment pipe 9 is stopped. Under the action of two sets of return springs 15, the limiting pin 14 is pushed to fit tightly against the slide groove 6, thereby limiting the adjustment pipe 9.

[0023] Example 2, as Figures 1-5 As shown, a pixel clarity adjustment device for a rigid endoscope allows for the following process: When one set of optical fibers 19 is activated to illuminate the interior of the working endoscope tube 2, and the clarity observed by the operator when rotating the adjustment pipe 9 does not change significantly, another set of optical fibers 19 is activated to provide auxiliary illumination to the interior of the working endoscope tube 2, increasing the illumination intensity and making the scanning image of the objective lens body 20 clearer. At this time, the operator can manually rotate the adjustment pipe 9 to adjust the focal length from the second observation lens 12 to the first observation lens 8, thereby adjusting the clarity during observation.

[0024] It should be noted that this utility model is a pixel clarity adjustment device for a rigid endoscope. In use, firstly, the objective lens body 20 is installed with the working lens tube 2. Then, the two sets of light guide hoses 18 and optical fibers 19 are connected to the corresponding connecting tubes 4 to provide illumination for the device. Next, the first observation lens 8 is snapped into the eyepiece cavity 5, so that one side of the first observation lens 8 contacts the first fixing ring 7, while the other side of the first observation lens 8 protrudes from the front end of the eyepiece cavity 5, facilitating disassembly of the first observation lens 8. Then, the fixing sleeve 13 and the limiting pin 14 are correspondingly installed inside the fixing sleeve 13, and the two sets of limiting pins... Press 14 inward, then fit the adjustment pipe 9 onto the outside of the eyepiece cavity 5, so that the two sets of limiting pins 14 are correspondingly engaged inside the slide groove 6. Under the action of the return spring 15, push the limiting pins 14 to fit tightly against the slide groove 6, and install the second observation lens 12 inside the adjustment pipe 9. Then, insert the convex ring 11 at the front end of the adjustment pipe 9 into the fixing groove 17 at the rear end of the eyepiece cover 16 to complete the assembly of the equipment. The operator can adjust the focal length of the second observation lens 12 to the first observation lens 8 by rotating the adjustment pipe 9. At the same time, the two sets of optical fibers 19 can enhance the illumination, making it easier for the operator to adjust the pixel clarity.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An endoscope rigid scope pixel sharpness adjustment device comprising an endoscope body (1), characterized by: The endoscope body (1) has a working tube (2) at its rear end, and an objective lens body (20) at its rear end. A light cone (3) is located below the endoscope body (1), and two sets of connecting tubes (4) are located at the bottom of the light cone (3). One end of each of the two sets of connecting tubes (4) is equipped with a light guide hose (18), and optical fibers (19) are installed inside each of the two sets of light guide hoses (18). An eyepiece cavity (5) is located at the front end of the endoscope body (1). Two sets of sliding grooves (6) are symmetrically arranged on the outer inner wall of the eyepiece cavity (5). A first fixing ring (7) is located inside the eyepiece cavity (5). A first observation lens (8) is located inside the eyepiece cavity (5), and one edge of the first observation lens (8) abuts against the first fixing ring (7). The thickness of the first observation lens (8) is... The distance is greater than the distance from the first fixing ring (7) to the front end of the eyepiece cavity (5). An adjustment pipe (9) is provided on the outside of the eyepiece cavity (5). A second fixing ring (10) is provided on the inside of the adjustment pipe (9). A second observation lens (12) is provided inside the adjustment pipe (9). Two sets of fixing sleeves (13) are symmetrically arranged on the outside of the adjustment pipe (9). A limiting pin (14) and a return spring (15) are provided inside the two sets of fixing sleeves (13). The limiting pin (14) slides inside the slide groove (6). A convex ring (11) is provided on the outer surface of the front end of the adjustment pipe (9). An eyepiece cover (16) is provided at the front end of the adjustment pipe (9). A fixing groove (17) is provided on the inner wall of the rear end of the eyepiece cover (16). The convex ring (11) is engaged inside the fixing groove (17).

2. The pixel definition adjustment device for endoscope and rigid endoscope according to claim 1, characterized in that: The working endoscope tube (2) is fixedly installed at the rear end of the endoscope body (1), the objective lens body (20) is detachably installed at the rear end of the working endoscope tube (2), and the light cone (3) is fixedly installed below the endoscope body (1).

3. The pixel definition adjustment device for endoscope and rigid endoscope according to claim 1, characterized in that: The connecting tube (4) is fixedly installed below the light cone (3), the light guide hose (18) is detachably installed below the connecting tube (4), and the optical fiber (19) is detachably installed inside the light guide hose (18).

4. The pixel definition adjustment device for endoscope and rigid endoscope according to claim 1, characterized in that: The eyepiece cavity (5) is fixedly installed at the front end of the endoscope body (1), the first observation lens (8) is embedded inside the eyepiece cavity (5), and the fixing sleeve (13) is fixedly installed on the outside of the adjustment pipe (9).

5. The pixel definition adjustment device for endoscope and rigid endoscope according to claim 1, characterized in that: The fixed sleeve (13) and the limiting pin (14) are detachably installed inside the fixed sleeve (13), and the adjusting pipe (9) slides outside the eyepiece cavity (5) through the provided limiting pin (14) and the slide groove (6).

6. The pixel definition adjustment device for endoscope and rigid endoscope according to claim 1, characterized in that: The second observation lens (12) is embedded inside the adjustment pipe (9). The eyepiece cover (16) is detachably connected to the adjustment pipe (9) through the fixed groove (17) and the convex ring (11). The eyepiece cover (16) is made of rubber.

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