Endoscope fog elimination component

Abstract

The present application discloses an endoscope defogging assembly, comprising an endoscope body, an inner tube fixedly connected to the endoscope body, an outer tube sleeved on the inner tube, a glued prism installed on the inner tube, an opening and closing mechanism installed on the end of the inner tube, a first air duct arranged on the inner tube, a second air duct arranged between the inner tube and the outer tube, a moving mechanism for driving the glued prism to move, and a linkage mechanism linking the opening and closing mechanism and the moving mechanism. In the present application, when defogging is required, the glued prism retracts into the inner tube, and the opening and closing mechanism closes to form a defogging area. The first air duct is externally connected to a gas heating device, and the heated gas is transported to the defogging area through the first air duct and the second air duct, and the outer surface of the glued prism is defogged by air circulation. In the narrow defogging area, the heated gas heats up quickly, which can significantly improve the defogging efficiency, so that the endoscope can be defogged in time during operation, which helps doctors observe the lesion site more accurately.

Description

Technical Field

[0001] The present application relates to the technical field of minimally invasive medical equipment, and in particular to an endoscope fog elimination component. Background Art

[0002] An endoscope is a multidisciplinary instrument that integrates technologies from traditional optics, ergonomics, precision mechanics, modern electronics, mathematics, and software. It can be inserted through the mouth into the stomach or other natural orifices into the human body. Endoscopes allow doctors to observe lesions that are invisible to X-rays, making them extremely valuable in the medical field.

[0003] A medical endoscope primarily consists of an endoscope system, an image display system, and an illumination system. The handle and endoscope body are key components of the endoscope system. The endoscope body, in turn, includes a protective sheet, multiple objective lenses, an image sensor, an eyepiece, an illumination unit, and auxiliary components. The illumination system, comprised of multiple optical fiber bundles and a light source, provides visible light for endoscopic imaging.

[0004] During operation, an endoscope travels from the operating room's 25°C environment to the human abdominal cavity's 37°C. Due to this dramatic change in temperature, the protective film in front of the endoscope can easily form a layer of fog on its outer surface. This phenomenon can interfere with the doctor's observation and operation, adversely affecting diagnosis and treatment. Summary of the Invention

[0005] The purpose of this application is to provide an endoscope fog elimination component to solve the problem of endoscope fogging during operation.

[0006] An endoscope fog elimination assembly provided in the present application adopts the following technical solution: it includes an endoscope body, an inner tube fixedly connected to the endoscope body, an outer tube sleeved on the inner tube, a glued prism installed on the inner tube, an opening and closing mechanism installed on the end of the inner tube, a first air duct arranged in the inner tube, a second air duct arranged between the inner tube and the outer tube, a moving mechanism for driving the glued prism to move, and a linkage mechanism that links the opening and closing mechanism and the moving mechanism; the outer tube is connected to the linkage mechanism, and the outer tube is rotated to drive the opening and closing mechanism and the moving mechanism to work through the linkage mechanism, the gap between the glued prism and the opening and closing mechanism is a demisting area, and the first air duct and the second air duct can be connected through the demisting area.

[0007] By adopting the above technical solution, the first air duct is connected to an external gas heating device. When demisting is required, the glued prism is retracted into the inner tube, the opening and closing mechanism is closed, and the opening and closing mechanism, the glued prism and the inner wall of the inner tube enclose a demisting area. The heated gas is transported to the demisting area through the first air duct and the second air duct by air circulation, and the outer surface of the glued prism is demisted by the heated gas; after demisting is completed, the outer tube is rotated to reduce the distance between the glued prism and the opening and closing mechanism; the opening and closing mechanism effectively prevents the heated gas from overflowing the endoscope into the body; the endoscope can be demisted in time during operation, which helps doctors observe the lesion site more accurately.

[0008] Optionally, the opening and closing mechanism includes a first metal block fixedly connected to the end of the inner tube, a plurality of baffles installed on the metal block, and a first rotating block rotatably connected to the first metal block, the baffle is located between the first metal block and the first rotating block, the first metal block and the first rotating block are provided with through holes aligned with each other, the plurality of baffles can be spliced ​​into a complete plane to separate the through holes, the first metal block is provided with a first slide groove, the baffle is provided with a second slide groove, the baffle can move along the first slide groove, and the first rotating block is provided with a first rotating protrusion that can move along the second slide groove.

[0009] By adopting the above technical solution, the baffle is located between the first metal block and the first rotating block. Through the rotation of the first rotating block, all the baffles move and are spliced ​​into a complete plane, thereby preventing the heated gas from escaping from the endoscope and entering the body during demisting; after the demisting is completed, the first rotating block is rotated, and all the baffles retract to between the first metal block and the first rotating block, providing an unobstructed field of view for the glued prism; and in the demisting area formed, the heated gas heats up quickly after flowing through, and the demisting efficiency is high.

[0010] Optionally, the moving mechanism includes a second rotating block rotatably connected to the inner tube, a second metal block arranged in the second rotating block, and a mounting tube fixedly connected to the inner tube, the glued prism is fixedly installed in the second metal block, the outer surface of the second metal block is provided with a first annular groove, the center position of the first annular groove coincides with the rotation axis of the second rotating block, the first annular groove and the second rotating block are connected by a key, the inner tube is provided with a spiral groove, the second rotating block is provided with a second protrusion that can move along the spiral groove, and the second metal block is connected to the mounting tube with a sliding key.

[0011] By adopting the above technical solution, the axial movement of the bonded prism in the inner tube is realized. First, the second rotating block is connected to the second metal block with a sliding key, so that the rotation of the second rotating block will not affect the second metal block. Since the second rotating block can move along the spiral groove, the second rotating block can move along the axis of the inner tube while rotating. The second rotating block can drive the movement of the axis of the second metal block through the sliding key; the sliding key connection between the second metal block and the mounting tube limits the circumferential rotation of the second metal block; the rotation of the second rotating block can drive the bonded prism to move, so that the bonded prism can be retracted into the inner tube during demisting. The heated gas has a strong effect in a small space and the demisting effect is obvious.

[0012] Optionally, the linkage mechanism includes a rotating wheel rotatably connected to the inner tube, a first ring rotatably connected to the first rotating block, and several driving rods hinged to the first ring, the driving rods respectively pass through the second rotating block and the rotating wheel, and the outer tube is connected to the rotating wheel through gears.

[0013] By adopting the above technical solution, the rotation of the outer tube drives the rotating wheel through the gear. Since the driving rod passes through the second rotating block and the rotating wheel respectively, they can rotate synchronously. In this way, the moving mechanism and the opening and closing mechanism can be driven to work together simply by rotating the outer tube. In a small space, stable power transmission is achieved through the driving rod. The circumferential rotation transmission design fully utilizes the limited space and realizes multi-functional integration. The circumferential rotation transmission is achieved through the driving rod.

[0014] Optionally, the first rotating block is provided with a second annular groove, the center of the second annular groove coincides with the rotation axis of the first rotating block, the first ring is installed in the second annular groove, a first spring is provided between the inner wall of the second annular groove and the first ring, the first spring forces the first ring to move toward the second rotating block, and teeth that can engage with each other are provided on the inner wall of the second annular groove and the first ring.

[0015] By adopting the above technical solution, under the action of the first spring, the first ring and the second annular groove are in a disengaged state, so that the first ring can be in a state of independent rotation. When the distance between the glued prism and the opening and closing mechanism gradually increases from 0, the inner wall of the second annular groove and the teeth on the first ring are engaged and separated, and the plurality of baffles are closed from a closed state; when the distance between the glued prism and the opening and closing mechanism gradually changes from the maximum to 0, the inner wall of the second annular groove and the teeth on the first ring are separated and engaged, and the plurality of baffles are gradually opened from a closed state.

[0016] When the distance between the glued prism and the opening and closing mechanism gradually changes from the maximum to 0, and several baffles are in a closed state, the second metal block and the second rotating block will discharge the gas in the demisting area through the second air duct, and can block the first air duct and the second air duct, thereby effectively preventing the heated gas from entering the body when the opening and closing mechanism is opened.

[0017] Optionally, the second rotating block is provided with a third annular groove, the center of the third annular groove coincides with the rotation axis of the second rotating block, a second ring is provided in the third annular groove, a second spring is provided between the second ring and the inner wall of the third annular groove, and the second spring forces the second ring to move toward the first rotating block.

[0018] By adopting the above technical solution, the first ring, the first spring, the second ring and the second spring constitute a delay switch. When the second rotating block moves, the first ring and the second ring have not yet abutted, the first ring disengages from the teeth on the inner wall of the second annular groove, and the first ring rotates alone. At this time, the first ring cannot drive the first rotating plate to rotate. At this time, as long as the second metal block and the second rotating block move; when the first ring abuts the second ring, the first ring will be pressed into the second annular groove, so that the teeth of the first ring and the second annular groove engage with each other, thereby driving the first rotating disk to rotate, realizing the opening and closing of the opening and closing mechanism, so that the opening and closing mechanism is in the open state only after the demisting is completed. In other cases, the rotation of the drive rod will not affect the opening and closing mechanism, which can effectively prevent the leakage of airflow during demisting.

[0019] Optionally, the second spring has a greater elastic force than the first spring.

[0020] By adopting the above technical solution, the elastic force of the second spring is greater than that of the first spring, so that the second ring can push the first ring into the second annular groove, thereby driving the first rotating block to rotate. When the first ring is pushed to the bottom, the second ring will be pressed into the third annular groove, so that the second rotating block and the second metal block can move through a certain movable distance, preventing the second rotating block from causing obstruction during the movement.

[0021] Optionally, the inner tube is provided with an installation channel, an intermediate tube is fixedly connected in the installation channel, the end of the intermediate tube is sealedly connected to the end of the installation channel, a number of arc blocks are fixedly connected to the outside of the intermediate tube, the arc blocks abut against the inner wall of the installation channel, and the outer side surface of the intermediate tube and the inner wall of the installation channel enclose a first air duct.

[0022] By adopting the above technical solution, the first air duct is constructed in a combined manner, which greatly reduces the processing difficulty of the inner tube. The arc block not only supports the middle tube, but also increases the flow obstruction effect of the airflow, effectively alleviating the airflow impact.

[0023] Optionally, a continuous air groove is provided on the outer side of the inner tube, and the inner wall of the air groove and the inner wall of the outer tube form a second air duct, and the inner tube and the outer tube are movably sealed.

[0024] By adopting the above technical solution, the second air duct is constructed in a combined manner, which greatly reduces the processing difficulty of the inner tube and the outer tube. Moreover, the second air duct is arranged between the inner tube and the outer tube, which can effectively reduce the friction between the inner tube and the outer tube.

[0025] Optionally, a plurality of cylindrical optical lenses are installed in the mounting tube.

[0026] By adopting the above technical solution, a number of cylindrical optical lenses constitute the transmission path of the optical image, and the mounting tube ensures that the optical path of the glued prism overlaps during the movement, thereby ensuring the stability of the image.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When demisting is required, the laminated prism retracts into the inner tube and the opening and closing mechanism closes to form a demisting zone. The first air duct is connected to a gas heating device, which delivers heated gas to the demisting zone through the first and second air ducts. The air circulation removes mist from the outer surface of the laminated prism. In the narrow demisting zone, the heated gas heats up quickly, significantly improving demisting efficiency. This allows the endoscope to be demisted promptly during operation, helping doctors more accurately observe lesions.

[0029] 2. The opening and closing mechanism effectively prevents heated gases from escaping the endoscope and entering the body. The baffles join to form a complete, planar partition blocking the through-hole as the first rotating block rotates. Once defogger is complete, they retract, providing an unobstructed view for the bonded prism. Furthermore, when the distance between the bonded prism and the opening and closing mechanism decreases from its maximum value to zero and the baffles close, the second metal block and the second rotating block exhaust gases from the defogger area and block the first and second air ducts, preventing heated gases from entering the body when the opening and closing mechanism is opened.

[0030] 3. The linkage mechanism enables the outer tube to rotate, simultaneously driving the moving mechanism and the opening and closing mechanism. The outer tube drives the rotating disc via gears, and the drive rod passes through the second rotating block and the rotating disc to achieve synchronous rotation. This allows for stable power transmission and multi-functional integration in a confined space, fully utilizing the limited space. The first ring, first spring, second ring, and second spring form a delay switch. When the second rotating block moves, the first ring rotates alone first. Only when the first ring abuts the second ring does it drive the first rotating disc to rotate, opening and closing the opening and closing mechanism. This ensures that the opening and closing mechanism opens only after demisting is complete, effectively preventing airflow leakage during demisting. The moving mechanism enables the axial movement of the bonded prism within the inner tube. As the second rotating block rotates, it moves along the spiral groove, driving the axial movement of the second metal block via a sliding key. The second metal block is connected to the mounting tube sliding key to limit circumferential rotation, allowing the bonded prism to retract into the inner tube during demisting, enhancing the effect of the heated gas and improving the demisting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0032] Figure 2 This application Figure 1 A local enlarged view of point a in the middle;

[0033] Figure 3 This is a schematic diagram of the overall structure of the opening and closing mechanism in the embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of the structural explosion of the opening and closing mechanism in the embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of the overall structure of the first rotating block in the embodiment of the present application;

[0036] Figure 6 This application Figure 2 A partial enlarged view of point b in the middle;

[0037] Figure 7 This is a schematic diagram of the position and installation of the opening and closing mechanism, the moving mechanism, and the linkage mechanism in the embodiment of the present application;

[0038] Figure 8 This is a schematic diagram of the position and installation of the inner tube, outer tube, and opening and closing mechanism in the embodiment of the present application;

[0039] Figure 9 It is a schematic diagram of the overall structure of the first air duct in the embodiment of the present application.

[0040] Explanation of reference numerals: 1. endoscope body; 2. outer tube; 3. inner tube; 31. spiral groove; 32. defogging area; 4. opening and closing mechanism; 41. first metal block; 411. first slide groove; 412. barb; 42. baffle; 421. second slide groove; 43. first rotating block; 431. arc-shaped through groove; 432. first protrusion; 433. second annular groove; 434. first spring; 5. moving mechanism; 51. second rotating block ; 511, third annular groove; 512, second ring; 513, second spring; 514, second protrusion; 52, second metal block; 521, first annular groove; 6, linkage mechanism; 61, rotating wheel; 62, driving rod; 63, first ring; 7, first air duct; 71, intermediate tube; 72, mounting channel; 73, arc block; 8, second air duct; 9, cemented prism; 91, mounting tube; 92, cylindrical optical lens. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 -Attached Figure 9 This application is described in further detail.

[0042] An embodiment of the present application discloses an endoscope fog elimination component.

[0043] Example 1, reference Figure 1 and Figure 2 , an endoscope fog elimination component, including an endoscope body 1, an inner tube 3 fixedly connected to the endoscope body 1, an outer tube 2 sleeved on the inner tube 3, a glued prism 9 installed on the inner tube 3, an opening and closing mechanism 4 installed at the end of the inner tube 3, a first air duct 7 arranged in the inner tube 3, a second air duct 8 arranged between the inner tube 3 and the outer tube 2, a moving mechanism 5 for driving the glued prism 9 to move, and a linkage mechanism 6 that links the opening and closing mechanism 4 and the moving mechanism 5; the outer tube 2 is connected to the linkage mechanism 6, and the outer tube 2 is rotated to drive the opening and closing mechanism 4 and the moving mechanism 5 to work through the linkage mechanism 6. The gap between the glued prism 9 and the opening and closing mechanism 4 is a defogging area 32, and the first air duct 7 and the second air duct 8 can be connected through the defogging area 32. wherein the first air duct 7 is externally connected to a gas transport device and a gas heating device, and in this embodiment 1, carbon dioxide gas is used for demisting. When the outer surface of the endoscope is fogged, the outer tube 2 is rotated, and the linkage mechanism 6 drives the moving mechanism 5 to retract the glued prism 9 into the inner tube 3 and drives the opening and closing mechanism 4 to close. The gap between the glued prisms 9 and the glued prisms 9 continues to increase, forming a semi-closed demisting area 32. The first air duct 7 and the second air duct 8 are connected to the demisting area 32 at this time, and the gas heating equipment heats the dry carbon dioxide gas to 40°C, and transports it to the demisting area 32 through the first air duct 7 to demist the outer surface of the glued prism 9. This has a better demisting effect on the glued prism 9 in a narrow space.

[0044] refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 The opening and closing mechanism 4 includes a first metal block 41 fixedly connected to the end of the inner tube 3, a plurality of baffles 42 mounted on the metal block, and a first rotating block 43 rotatably connected to the first metal block 41. The baffle 42 is located between the first metal block 41 and the first rotating block 43. The first metal block 41 and the first rotating block 43 are provided with through holes aligned with each other. The first rotating block 43 is circumferentially distributed with four arcuate grooves 431. The first metal block 41 is provided with four barbs 412 passing through the arcuate grooves 431. The four barbs 412 limit the axial movement of the first metal block 41. The baffles 42 It can be spliced ​​into a complete plane to separate the through hole. The first metal block 41 is provided with a first slide groove 411, and the baffle 42 is provided with a second slide groove 421. The baffle can move along the first slide groove 411. The first rotating block 43 is provided with a first rotating protrusion that can move along the second slide groove 421; when the first rotating block 43 rotates, under the action of the first protrusion 432, the first rotating block 43 will drive the baffle 42 to move along the first slide groove 411, which causes all the baffles 42 to move centripetally or outwardly at the same time, thereby completing the opening and closing of the locking mechanism.

[0045] refer to Figure 2 and Figure 6 The moving mechanism 5 includes a second rotating block 51 rotatably connected to the inner tube 3, a second metal block 52 disposed within the second rotating block 51, and a mounting tube 91 fixedly connected to the inner tube 3. The cemented prism 9 is fixedly mounted within the second metal block 52. A first annular groove 521 is provided on the outer surface of the second metal block 52. The center of the first annular groove 521 coincides with the rotation axis of the second rotating block 51. The first annular groove 521 and the second rotating block 51 are connected by a key. The inner tube 3 is provided with a spiral groove 31. The second rotating block 51 is provided with a second protrusion 514 that can move along the spiral groove 31. The second metal block 52 is connected to the mounting tube 91 by a sliding key. When the second rotating block 51 rotates, it rotates relative to the second metal block 52, causing the second rotating block 51 to move along the spiral groove 31 of the inner tube 3, allowing the second rotating block 51 to move axially within the inner tube 3. Because the second rotating block 51 and the second metal block 52 are connected via the first annular groove 521 and the sliding key, the sliding key can transmit the axial force of the second rotating block 51 to the second metal block 52, allowing the second metal block 52 to also move axially, thereby achieving movement of the glued prism 9. Because the second metal block 52 is connected to the mounting tube 91 by the sliding key, multiple cylindrical optical lenses 92 are fixedly connected to the mounting tube 91. This glued connection ensures that the optical path of the cylindrical optical lenses 92 coincides during movement.

[0046] refer to Figure 2 and Figure 6 The linkage mechanism 6 includes a rotating disc 61 rotatably connected to the inner tube 3, a first ring 63 rotatably connected to the first rotating block 43, and four drive rods 62 hinged to the first ring 63. The drive rods 62 respectively penetrate the second rotating block 51 and the rotating disc 61. The outer tube 2 is connected to the rotating disc 61 via gears. The drive rods 62 mainly transmit the power of the rotating disc 61 to the opening and closing mechanism 4 and the moving mechanism 5. When the outer tube 2 rotates, the rotating disc 61 is driven to rotate by the gear transmission. Since the drive rods 62 penetrate the rotating disc 61, the rotating disc 61 can drive the four drive rods 62 to rotate circumferentially, thereby simultaneously driving the first ring 63 and the second rotating block 51 to rotate. In this way, the rotation through radial force in a narrow space not only ensures the stability of power transmission, but also greatly optimizes the structural space.

[0047] refer to Figure 6 The first rotating block 43 is provided with a second annular groove 433, the center of which coincides with the rotation axis of the first rotating block 43. The first circular ring 63 is installed in the second annular groove 433. A first spring 434 is provided between the inner wall of the second annular groove and the first circular ring 63. The first spring 434 forces the first circular ring 63 to move toward the second rotating block 51. The inner wall of the second annular groove 433 and the first circular ring 63 are provided with teeth that can engage with each other. Under the action of the first spring 434, the first circular ring 63 and the second annular groove 433 are disengaged, so that the first circular ring 63 can rotate independently. When the distance between the glued prism 9 and the opening and closing mechanism 4 gradually increases from 0, the teeth on the inner wall of the second annular groove 433 and the first circular ring 63 go from meshing to disengagement, and the plurality of baffles 42 go from a closed state to a closed state.

[0048] As the distance between the laminated prism 9 and the opening and closing mechanism 4 gradually decreases from maximum to zero, the teeth on the inner wall of the second annular groove 433 and the first circular ring 63 shift from separation to engagement, and the plurality of baffles 42 gradually open from a closed state. When the distance between the laminated prism 9 and the opening and closing mechanism 4 gradually decreases from maximum to zero, and the plurality of baffles 42 are in a closed state, the second metal block 52 and the second rotating block 51 expel the gas in the demisting area 32 through the second air duct 8, thereby blocking the first air duct 7 and the second air duct 8, effectively preventing the heated gas from entering the body when the opening and closing mechanism 4 is opened.

[0049] refer to Figure 6When the second rotating block 51 moves, the first ring 63 and the second ring 512 are not in contact with each other, and the first ring 63 is disengaged from the teeth on the inner wall of the second annular groove 433, and the first ring 63 rotates alone. At this time, the first ring 63 cannot drive the first rotating plate to rotate as long as the second metal block 52 and the second rotating block 51 move; when the first ring 63 and the second ring 512 are not in contact with each other, the first ring 63 is disengaged from the teeth on the inner wall of the second annular groove 433, and the first ring 63 rotates alone. At this time, the first ring 63 cannot drive the first rotating plate to rotate. When the first ring 63 abuts against the first ring 63, the first ring 63 will be pressed into the second annular groove 433, so that the teeth of the first ring 63 and the second annular groove 433 engage with each other, thereby driving the first rotating disk to rotate and realize the opening and closing of the opening and closing mechanism 4. In this way, the opening and closing mechanism 4 is in the open state only after the demisting is completed. In other cases, the rotation of the driving rod 62 will not affect the opening and closing mechanism 4, which can effectively prevent the leakage of air flow during demisting; the elastic force of the second spring 513 is greater than the first spring 434, so that the second ring 512 can push the first ring 63 into the second annular groove 433, thereby driving the first rotating block 43 to rotate. When the first ring 63 is pushed to the bottom, the second ring 512 will be pressed into the third annular groove 511, which can enable the second rotating block 51 and the second metal block 52 to move through a certain movable distance, preventing the second rotating block 51 from being blocked during the movement.

[0050] refer to Figure 2 、 Figure 7 、 Figure 8 and Figure 9 The inner tube 3 is provided with a mounting channel 72, and an intermediate tube 71 is fixedly connected to the mounting channel 72. The end of the intermediate tube 71 is sealed with the end of the mounting channel 72, and a number of arc blocks 73 are fixedly connected to the outside of the intermediate tube 71. The arc blocks 73 abut the inner wall of the mounting channel 72, and the outer side surface of the intermediate tube 71 and the inner wall of the mounting channel 72 enclose a first air duct 7, which greatly reduces the processing difficulty of the inner tube 3. The arc blocks 73 not only support the intermediate tube 71, but also increase the flow obstruction effect of the airflow, effectively alleviating the impact of the airflow; a continuous air groove is provided on the outside of the inner tube 3, and the inner wall of the air groove and the inner wall of the outer tube 2 enclose a second air duct 8. The inner tube 3 and the outer tube 2 are movably sealed. The second air duct 8 is arranged between the inner tube 3 and the outer tube 2, which can effectively reduce the friction between the inner tube 3 and the outer tube 2.

[0051] The operating principle of an endoscope defogging assembly according to an embodiment of the present application is as follows: When the endoscope is in normal operating mode, the bonded prism 9 is fully extended to the front end of the inner tube 3, the baffles 42 of the opening and closing mechanism 4 are deployed, and the first air duct 7 and the second air duct 8 are isolated from each other by a closed defogging zone 32. The operator rotates the outer tube 2 clockwise, which drives the rotating wheel 61 in the linkage mechanism 6 to rotate synchronously via a gear transmission. The rotating wheel 61 drives four drive rods 62 running through it to move circumferentially. The drive rods 62 transmit power to the second rotating block 51 of the moving mechanism 5 and the first circular ring 63 of the opening and closing mechanism 4. The second rotating block 51, driven by the drive rods 62, begins to rotate, and its second protrusion 514 slides along the spiral groove 31 of the inner tube 3, forcing the second rotating block 51 and the second metal block 52 connected to it with a sliding key to axially retract into the inner tube 3. The drive rods 62 also drive the opening and closing mechanism 4 to continue to close. At this time, the gap between the bonded prism 9 and the opening and closing mechanism 4 gradually expands, forming a semi-enclosed defogging zone 32.

[0052] At this time, the demisting area 32 is fully formed, the first air duct 7 and the second air duct 8 are connected through the demisting area 32, and the gas is sprayed from the first air duct 7 to the outer surface of the glued prism 9 for demisting, and then discharged from the endoscope through the second air duct 8 with moisture to complete the mirror cleaning.

[0053] The outer tube 2 is rotated counterclockwise, and the rotating wheel 61 drives the second rotating block 51 and the first ring 63 in the reverse direction. The second rotating block 51 moves in the reverse direction along the spiral groove 31, pushing the second metal block 52 and the glued prism 9 to reset to the front end, and the gap in the demisting area 32 is reset to zero, and the gas in the demisting area 32 is discharged at the same time; during the resetting process, the teeth of the first ring 63 and the second annular groove 433 change from disengagement to engagement, and the baffle 42 remains stationary for a period of time and then opens.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An endoscope fog elimination component, characterized in that: The invention comprises an endoscope body (1), an inner tube (3) fixedly connected to the endoscope body (1), an outer tube (2) sleeved on the inner tube (3), a glued prism (9) installed on the inner tube (3), an opening and closing mechanism (4) installed at the end of the inner tube (3), a first air duct (7) arranged in the inner tube (3), a second air duct (8) arranged between the inner tube (3) and the outer tube (2), a moving mechanism (5) for driving the glued prism (9) to move, and a linkage mechanism (6) for linking the opening and closing mechanism (4) and the moving mechanism (5); The outer tube (2) is connected to the linkage mechanism (6), and the outer tube (2) is rotated to drive the opening and closing mechanism (4) and the moving mechanism (5) to work through the linkage mechanism (6). The gap between the glued prism (9) and the opening and closing mechanism (4) is a defogging area (32), and the first air duct (7) and the second air duct (8) can be connected through the defogging area (32); The opening and closing mechanism (4) comprises a first metal block (41) fixedly connected to the end of the inner tube (3), a plurality of baffles (42) mounted on the metal block, and a first rotating block (43) rotatably connected to the first metal block (41), the baffle (42) being located between the first metal block (41) and the first rotating block (43), the first metal block (41) and the first rotating block (43) being provided with through holes aligned with each other, the plurality of baffles (42) being able to be spliced ​​into a complete plane to separate the through holes, the first metal block (41) being provided with a first slide groove (411), the baffle (42) being provided with a second slide groove (421), the baffle being able to move along the first slide groove (411), and the first rotating block (43) being provided with a first rotating protrusion being able to move along the second slide groove (421); The moving mechanism (5) comprises a second rotating block (51) rotatably connected to the inner tube (3), a second metal block (52) arranged in the second rotating block (51), and a mounting tube (91) fixedly connected to the inner tube (3); the cemented prism (9) is fixedly mounted in the second metal block (52); a first annular groove (521) is provided on the outer surface of the second metal block (52); the center position of the first annular groove (521) coincides with the rotation axis of the second rotating block (51); the first annular groove (521) and the second rotating block (51) are connected by a key; the inner tube (3) is provided with a spiral groove (31); the second rotating block (51) is provided with a second protrusion (514) capable of moving along the spiral groove (31); and the second metal block (52) is connected to the mounting tube (91) by a sliding key; The linkage mechanism (6) comprises a rotating wheel (61) rotatably connected to the inner tube (3), a first ring (63) rotatably connected to the first rotating block (43), and a plurality of driving rods (62) hinged to the first ring (63), wherein the driving rods (62) respectively pass through the second rotating block (51) and the rotating wheel (61), and the outer tube (2) and the rotating wheel (61) are connected via gears.

2. The endoscope defogging assembly according to claim 1, characterized in that: The first rotating block (43) is provided with a second annular groove (433), the center of the second annular groove (433) coincides with the rotation axis of the first rotating block (43), the first circular ring (63) is installed in the second annular groove (433), a first spring (434) is provided between the inner wall of the second annular groove and the first circular ring (63), the first spring (434) forces the first circular ring (63) to move toward the second rotating block (51), and teeth capable of engaging with each other are provided on the inner wall of the second annular groove (433) and the first circular ring (63).

3. The endoscope defogging assembly according to claim 2, characterized in that: The second rotating block (51) is provided with a third annular groove (511), the center of the third annular groove (511) coincides with the rotation axis of the second rotating block (51), a second ring (512) is provided in the third annular groove (511), a second spring (513) is provided between the second ring (512) and the inner wall of the third annular groove (511), and the second spring (513) forces the second ring (512) to move toward the first rotating block (43).

4. The endoscope defogging assembly according to claim 3, characterized in that: The elastic force of the second spring (513) is greater than that of the first spring (434).

5. The endoscope defogging assembly according to claim 4, characterized in that: The inner tube (3) is provided with a mounting channel (72), an intermediate tube (71) is fixedly connected inside the mounting channel (72), an end of the intermediate tube (71) is sealedly connected to an end of the mounting channel (72), a plurality of arc blocks (73) are fixedly connected to the outside of the intermediate tube (71), the arc blocks (73) abut against the inner wall of the mounting channel (72), and the outer side surface of the intermediate tube (71) and the inner wall of the mounting channel (72) enclose a first air duct (7).

6. The endoscope defogging assembly according to claim 5, characterized in that: A continuous air groove is provided on the outer side of the inner tube (3), and the inner wall of the air groove and the inner wall of the outer tube (2) enclose a second air duct (8), and the inner tube (3) and the outer tube (2) are movably sealed.

7. The endoscope defogging assembly according to claim 6, characterized in that: A plurality of columnar optical lenses (92) are installed in the installation tube (91).

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