Sealing structure and endoscope system

Abstract

The application relates to a sealing structure, comprising a tool with a flexible tube, an inner cavity communicating with the flexible tube, a detection cavity communicating with the inner cavity, a sealing assembly arranged in the detection cavity, the inner cavity, the detection cavity and the sealing assembly being airtightly connected to form a closed cavity, and a pressure feedback unit for feeding back pressure change in the closed cavity, so that a tester can judge whether the sealing fails according to the detection result of the pressure feedback unit if the sealing fails and pressure change occurs. The application also relates to an endoscope system with the sealing structure.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a sealing structure for monitoring the sealing performance of a tool, and an endoscope system having such a sealing structure. Background Technology

[0002] During diagnosis, treatment, cleaning, and disinfection, the endoscope body comes into contact with liquid. If the endoscope body is not well sealed, leakage will occur, and external liquid will enter the endoscope body, causing a series of problems such as electronic components malfunctioning due to liquid immersion, light guide light becoming moldy, and harmful substances entering the human body with the leaked liquid.

[0003] Therefore, it is especially important to assess the seal of an endoscope before it comes into contact with liquid to avoid the use of an endoscope with a poor seal, which could cause harm to the patient. Summary of the Invention

[0004] Based on this, the purpose of this application is to provide a sealing structure that can monitor pressure changes in the inner cavity of a tool to monitor leakage failures of the tool, such as an endoscope.

[0005] A sealing structure includes: a tool having a flexible tube and an inner cavity communicating with the flexible tube; a detection cavity communicating with the inner cavity; a sealing assembly disposed in the detection cavity, the inner cavity, the detection cavity, and the sealing assembly being airtightly connected to form a closed cavity; and a pressure feedback unit for feeding back pressure changes within the closed cavity.

[0006] If the sealed cavity fails and pressure changes occur, the tester can determine whether the seal has failed based on the detection results of the pressure feedback unit, thereby enabling the monitoring of pressure changes in the tool's internal cavity to detect leakage failures in tools such as endoscopes.

[0007] In one embodiment, the tool further includes: a housing connected to the proximal end of the flexible tube, the detection cavity located on one side of the housing, the inner cavity defined by the housing and the flexible tube; and an opening located between the inner cavity and the detection cavity, the opening allowing the inner cavity and the detection cavity to communicate with each other.

[0008] In one embodiment, the pressure feedback unit includes an indicator located in the detection chamber. When the pressure inside the closed chamber changes, the indicator moves along the axial direction of the detection chamber to provide feedback on the pressure change inside the closed chamber.

[0009] In one embodiment, the pressure feedback unit further includes an observation window, through which the indicator can be observed when the pressure inside the enclosed cavity changes.

[0010] In one embodiment, the indicator is movable from a first position to a second position. The indicator has an identification area and a reference area, which are disposed away from the sealing assembly along the axial direction. When the indicator is in the first position, the reference area faces the observation window. When the indicator is in the second position, the identification area faces the observation window.

[0011] In one embodiment, when the pressure inside the enclosed cavity changes, the indicator extends out of the detection cavity and is observed.

[0012] In one embodiment, the sealing assembly further includes a sealing rod inserted into the detection cavity to seal the detection cavity, and the inner cavity forms the sealed cavity.

[0013] In one embodiment, the indicator is disposed on the sealing rod and located at the end of the sealing rod away from the inner cavity.

[0014] In one embodiment, the sealing rod makes slidable sealing contact with the detection cavity, and the sealing assembly further includes an elastic reset member disposed between the sealing rod and the inner wall of the detection cavity. The elastic reset member is configured to provide an elastic force that causes the sealing rod to have a tendency to move toward the outside of the detection cavity, and the sealed cavity is under negative pressure.

[0015] In one embodiment, the pressure feedback unit further includes a signal electrical circuit, which is triggered by the indicator to generate an electrical signal when the pressure inside the enclosed cavity changes.

[0016] In one embodiment, the signal electrical circuit includes a first contact and a second contact. When the indicator moves along the axial direction of the detection cavity, the first contact and the second contact switch from a first state of on / off to a second state. Alternatively, the indicator includes a magnetic element; the signal electrical circuit includes a Hall distance sensor, which feeds back different signals according to the position change of the magnetic element. Alternatively, the signal electrical circuit includes a signal transmitter and a signal receiver. When the indicator moves along the axial direction of the detection cavity, the transmission path between the signal transmitter and the signal receiver switches from a first state of on / off to a second state.

[0017] In one embodiment, the pressure feedback unit includes a gas pressure sensor disposed in the inner cavity of the detection chamber or tool, and a pressure detection circuit board electrically connected to the gas pressure sensor.

[0018] In one embodiment, the pressure detection circuit board is arranged in a manner parallel to the axial direction of the detection cavity; or, the sealing assembly is disposed at a first end in the axial direction of the detection cavity, and the pressure detection circuit board is disposed at a second end of the detection cavity and closes the second end.

[0019] In one embodiment, the detection chamber is provided with a first seal; the sealing assembly includes an inflation rod and an elastic element, the inflation rod includes an air inlet communicating with the detection chamber, and the elastic element is configured to provide an elastic force that isolates the first seal from the air inlet and the detection chamber.

[0020] An endoscope system includes: a sealing structure as described in any of the preceding claims, wherein the tool is an endoscope; and a control system communicatively connected to the endoscope. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the endoscope system.

[0024] Figure 2 This is a schematic diagram of the structure of an endoscope.

[0025] Figure 3 This is a schematic diagram of a sealing structure according to an embodiment.

[0026] Figure 4 yes Figure 3 A magnified view of section X in the middle.

[0027] Figure 5 This is a schematic diagram showing the state where the sealing rod is not pushed into the detection chamber.

[0028] Figure 6 This is a schematic diagram showing the state when the sealing rod is pushed into the detection chamber and the seal is normal.

[0029] Figure 7 This is a schematic diagram of the state when the seal fails after the sealing rod is pushed in.

[0030] Figure 8This is a schematic diagram of the conductive sheet on the indicator section conducting the signal electrical circuit when the seal is normal in one embodiment.

[0031] Figure 9 This is a schematic diagram of the conductive sheet disconnecting the signal electrical circuit when the seal fails, according to one embodiment.

[0032] Figure 10 This is a schematic diagram showing the relative positions of the magnetic component on the indicator and the Hall sensor when the seal is normal in one embodiment.

[0033] Figure 11 This is a schematic diagram showing the relative positions of the magnetic component on the indicator and the Hall sensor when the seal fails in one embodiment.

[0034] Figure 12 This is a schematic diagram illustrating how, in one embodiment, when the seal is normal, the optical device on the indicator can enable the optical signal receiver to receive the signal from the optical signal transmitter.

[0035] Figure 13 This is a schematic diagram of the sealing structure in another embodiment.

[0036] Figure 14 yes Figure 13 The enlarged view of section Y in the middle shows the state where the sealing rod is not pushed into the detection chamber.

[0037] Figure 15 This is a schematic diagram of the state when the sealing rod is pushed into the detection chamber and the seal is normal, according to another embodiment.

[0038] Figure 16 This is a schematic diagram of yet another embodiment of the sealing assembly, wherein the sealing assembly is in a state where it cannot be inflated into the detection chamber.

[0039] Figure 17 yes Figure 16 Enlarged view of the Z-section.

[0040] Figure 18 This is a schematic diagram of the sealing assembly in another embodiment when it is in a state where air can be injected into the detection chamber.

[0041] Figure 19 This is a schematic diagram of the sealing structure in another embodiment, illustrating the state before the detection cavity is assembled into the endoscope.

[0042] Figure 20 This is a schematic diagram of the detection cavity being assembled to the endoscope in another embodiment.

[0043] Figure 21 for Figure 20 The enlarged view of section M shows the state when the sealing rod is not pushed into the detection chamber.

[0044] Figure 22 This is a schematic diagram showing the state of the sealing rod when it is pushed into the detection chamber.

[0045] Figure 23 yes Figure 19 A schematic diagram of the sealing structure in the diagram.

[0046] Figure 24 yes Figure 23 A schematic diagram showing the state of the sealing structure when the sealing rod is not pushed into the detection chamber.

[0047] Figure 25 yes Figure 23 An exploded view of the sealing structure shown.

[0048] Figure 26 This is a schematic diagram of an endoscope with a sealing structure according to another embodiment.

[0049] Figure 27 yes Figure 26 The enlarged view of section N shows the structure before the sealing rod pops out of the detection chamber.

[0050] Figure 28 This is a schematic diagram showing the state when the sealing rod pops out of the detection chamber and the seal is normal.

[0051] Figure 29 This is a schematic diagram showing the state when the sealing rod pops out of the detection chamber due to sealing failure.

[0052] The corresponding numbers of the relevant components in the diagram are as follows:

[0053] 1. Sealing structure; 100. Endoscope; 101. Endoscope body; 102. Flexible tube; 103. Inner cavity; 104. Opening; 200. Detection chamber; 210. First end; 220. Second end; 230. Internal thread; 240. Outlet; 300. Sealing assembly; 310. Sealing rod; 311. Sealing part; 312. Connecting part; 313. Piston; 314. Head; 315. Rod part; 320. Inflation rod; 321. Air inlet; 3211. Inflation end; 3212. Air delivery end; 330. Elastic element; 340. First sealing element; 350. Second sealing element; 360. Third sealing element 370. Fourth seal; 380. Elastic reset element; 400. Pressure feedback unit; 410. Indicator; 411. Marking area; 412. Reference area; 413. Conductive sheet; 414. Magnetic element; 415. Optical device; 420. Observation window; 430. Zero position window; 440. Signal electrical circuit; 441. First contact; 442. Second contact; 443. Hall distance sensor; 444. Signal transmitter; 445. Signal receiver; 450. Gas pressure sensor; 460. Pressure detection circuit board; 461. Battery; 2. Control system; 3. Pumping device; 4. Module. Detailed Implementation

[0054] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0055] According to the sealing structure of this application, pressure changes in the inner cavity of an instrument such as an endoscope can be monitored. The instrument includes a tool, a detection chamber, a sealing assembly, and a pressure feedback unit. The tool has a flexible tube and an inner cavity communicating with the flexible tube. The detection chamber is in communication with the inner cavity. The sealing assembly is disposed within the detection chamber, and the inner cavity, detection chamber, and sealing assembly are airtightly connected to form a closed cavity. The pressure feedback unit is used to provide feedback on pressure changes within the closed cavity.

[0056] The detection chamber, sealing assembly, and pressure feedback unit can be configured to be integrated into the tool, or they can be configured to be integrated into a separate module, which is then detachably connected to the tool.

[0057] For example, the tool includes a housing connected to the proximal end of a flexible tube, a detection chamber located on one side of the housing, and an inner cavity defined by the housing and the flexible tube. The housing has an opening between the inner cavity and the detection chamber, allowing the inner cavity and the detection chamber to communicate with each other. The detection chamber, a sealing assembly, and a pressure feedback unit can be configured to be integrated onto the housing.

[0058] The embodiments of this application describe an endoscope system constructed using a sealed structure as an application scenario. Specifically, in this case, the tool is an endoscope, the housing of the tool is the endoscope body, and the detection chamber, sealing assembly, and pressure feedback unit are disposed in the endoscope body. However, this is merely exemplary, and the tool can also be other types of tools that require monitoring of airtightness.

[0059] The endoscopic system of the present invention will now be described in detail with reference to the accompanying drawings.

[0060] like Figures 1 to 2 This illustrates an endoscope system, including a sealing structure 1 and a control system 2. Figure 3 As shown, the sealing structure 1 includes, specifically, an endoscope 100, a detection chamber 200, a sealing assembly 300, and a pressure feedback unit 400.

[0061] The endoscope 100 includes a body 101. The body 101 is generally hollow. At the distal end of the body 101, i.e., the end furthest from the doctor, is a flexible tube 102 for insertion into the human body. (Refer to reference) Figure 2 and Figure 4 The internal space of the endoscope body 101 is called the cavity 103 of the endoscope 100. The endoscope body 101 is provided with an opening 104 located between the detection cavity 200 and the cavity 103 to connect the detection cavity 200 and the cavity 103.

[0062] For example, the detection cavity 200 is fixedly disposed on the endoscope body 101 of the endoscope 100, for example, the detection cavity 200 and the endoscope body 101 are integrally formed; or the detection cavity 200 is detachably installed on the endoscope body 101 of the endoscope 100. The detection cavity 200 is specifically disposed on one side of the endoscope body 101 and is disposed axially. The aforementioned axial direction may be the same as or different from the length direction of the endoscope body 101. One end of the detection cavity 200 in the axial direction communicates axially with the inner cavity 103 of the endoscope 100. However, the detection cavity 200 may also communicate with the inner cavity 103 in a direction perpendicular to the axial direction. The endoscope body 101, the flexible tube 102, and other ports on the endoscope 100 are all in a sealed state.

[0063] It should be noted that when the detection cavity 200 and the mirror body 101 are integrally formed, the detection cavity 200 is equivalent to a part of the mirror body 101. The sealing assembly 300 is disposed in the detection cavity 200, and the inner cavity 103, the detection cavity 200, and the sealing assembly 300 are airtightly connected to form a closed cavity. Specifically, the sealing assembly 300 seals the detection cavity 200, so that the detection cavity 200 communicates with the inner cavity 103 but not with the external space.

[0064] The pressure feedback unit 400 is used to provide feedback on pressure changes within the sealed cavity. When the seal of the sealed cavity fails, resulting in a pressure change, the pressure feedback unit 400 responds by providing feedback on the pressure change within the sealed cavity. Feedback methods include generating a prompt signal, which can be any form of light, sound, electronic communication, etc.; it can also be a form observable by the tester, such as a visual difference signal formed by changes in the appearance of the sealing structure. The pressure feedback unit 400 can be configured in various ways, for example, it can include multiple components integrated into the detection cavity 200; or it can be mounted as a module on the detection cavity 200; or it can be partially mounted in the detection cavity 200 and partially mounted on the mirror body 101.

[0065] The pressure feedback unit 400 of different embodiments of this application will be explained below with reference to the accompanying drawings.

[0066] like Figures 2 to 4As shown, in one embodiment, the detection cavity 200 is fixedly disposed on the endoscope body 101 of the endoscope 100. The first axial end 210 of the detection cavity 200 is open to accommodate the sealing assembly 300, and the second axial end 220 of the detection cavity 200 communicates with the inner cavity 103 of the endoscope 100, so that the detection cavity 200 and the inner cavity 103 of the endoscope 100 form a closed cavity. As mentioned above, the detection cavity 200 may also be part of the endoscope body 101.

[0067] refer to Figure 4 and Figure 5 The sealing assembly 300 includes a sealing rod 310 extending into the detection chamber 200. The sealing rod 310 is in a sealing fit with the inner wall of the detection chamber 200 and closes the detection chamber 200 to form a closed cavity; and the internal pressure of the closed cavity is greater than the external environmental pressure.

[0068] For example, the sealing rod 310 is provided with a sealing part 311 and a connecting part 312, wherein the sealing part 311 is in a sealing fit with the inner wall of the detection cavity 200, and the connecting part 312 is connected to the inner wall of the detection cavity 200 so that the sealing rod 310 is fixedly connected to the detection cavity 200. After the sealing rod 310 is installed in the detection cavity 200, the connecting part 312 is in a predetermined mating position.

[0069] To facilitate the assembly of the sealing assembly 300, in one embodiment, the sealing portion 311 of the sealing rod 310 slides and seals against the inner wall of the detection cavity 200 along the axial direction of the detection cavity 200. When the connecting portion 312 moves toward the interior of the detection cavity 200, i.e., toward the second end 113 of the detection cavity 200, to the predetermined mating position, the pressure inside the sealed cavity reaches the desired threshold and exceeds atmospheric pressure (ambient air pressure). If leakage occurs in the sealed cavity thereafter, the sealing environment fails, and the pressure inside the sealed cavity cannot guarantee the desired threshold. The pressure feedback unit 400 will report this pressure change.

[0070] Through the above methods, when forming the endoscope system, the sealing part 311 of the sealing rod 310 is sealed to the inner wall of the detection cavity 200, and leakage of the closed cavity will not occur; thus, the endoscope system has a closed cavity and the internal pressure of the closed cavity is greater than the external environmental pressure.

[0071] Furthermore, the sealing assembly 300 also includes a piston 213 connected to the sealing rod 311, and the piston 213 is slidably sealed to the inner wall of the detection chamber 200. During the assembly of the sealing rod 310, the piston 213 also serves to prevent leakage of the sealed chamber. Moreover, the piston 213 and the sealing part 311 are located at opposite ends of the sealing rod 310, and the piston 213 can be inserted into the detection chamber 200 before the sealing part 311, thereby sealing the detection chamber 200 earlier to form a closed chamber.

[0072] In the various embodiments of this application, the "sliding seal" formed between two elements A and B refers to the fact that the two elements can slide relative to each other when needed, and the mating interface between them is in a sealed state during the sliding process. For example, a sealing element can be provided on A, with the inner ring of the sealing element mating with A and the outer ring of the sealing element mating with B, which will not be described in detail below.

[0073] The connecting part 312 is fixedly connected to the inner wall of the detection cavity 200, and different implementation methods are possible. In one implementation method, refer to... Figure 4 and Figure 5 The connecting part 312 is provided with an external thread, and the inner wall of the detection cavity 200 is provided with a matching internal thread 230.

[0074] The sealing part 311 includes a sealing ring fitted onto the sealing rod 310. The sealing rod 310 specifically includes a cylindrical head 314 and a rod portion 315 connected to the head 314, wherein the rod portion 315 is connected to the piston 213. The diameter of the rod portion 315 is smaller than the inner diameter of the detection cavity 200. The diameter of the head 314 is larger than the diameter of the rod portion 315. The head 314 has external threads to form the aforementioned connecting part 312, and a sealing ring fitted onto it to form the aforementioned sealing part 311.

[0075] In other embodiments, the connecting part 312 is fixedly connected to the inner wall of the detection cavity 200, or the connecting part 312 and the detection cavity 200 are plug-in or plug-out, such as an interference fit.

[0076] like Figure 3 , Figure 5 As shown, the pressure feedback unit 400 includes an indicator 410 that moves in response to pressure changes, and the indicator 410 is located in the detection chamber 200. When the pressure inside the closed chamber changes, the indicator 410 moves along the axial direction of the detection chamber 200 to detect the pressure change within the closed chamber. The movement of the indicator 410 is observed, thereby allowing the determination of the pressure change within the closed chamber.

[0077] like Figure 3 and Figure 5 As shown, the pressure feedback unit 400 also includes an observation window 250, through which the indicator 410 can be observed when the pressure inside the closed cavity changes.

[0078] For example, the indicator 410 is slidably disposed within the detection cavity 200 and has a first position and a second position. When the sealing assembly 300 is installed in the detection cavity 200, the indicator 410 is in the first position, such as... Figure 6 As shown; when the sealed cavity fails and the pressure changes, the indicator 410 moves from the first position to the second position to generate a warning signal, such as... Figure 7As shown. When the indicator 410 moves to the second position, the indicator 410 can be observed from the observation window 250.

[0079] In one embodiment, such as Figures 4 to 7 As shown, the observation window 250 is disposed on the cavity wall of the detection cavity 200, and the position of the observation window 250 corresponds to the second position of the indicator 410. When the indicator 410 moves to the second position, it appears in the observation window 250.

[0080] The indicator 410 is disposed in the detection chamber 200, located between the sealing assembly 300 and the second end 220 of the detection chamber 200. Specifically, the indicator 410 is disposed between the piston 213 of the sealing assembly 300 and the second end 220 of the detection chamber 200.

[0081] Combination Figures 4 to 7 As shown, the assembly process of the sealing assembly 300 and the indicator 410 is briefly described.

[0082] When installing the sealing assembly 300 and the indicator 410, the indicator 410 is first placed into the detection chamber 200, and then the sealing assembly 300 is installed. For example... Figure 5 As shown, before the sealing rod 310 is pushed into the detection chamber 200, there is an initial gap S between the indicator part 410 and the piston 213 to form a sealed air chamber, which is equivalent to a gas spring.

[0083] refer to Figure 4 and Figure 6 As shown, rotating the sealing rod 310 causes the piston 213 to move toward the second end 113 of the detection chamber 200. This compresses the gas within the sealed chamber and forces the indicator 410 to move toward the second end 220 of the detection chamber 200. When the connecting part 312 moves to a predetermined mating position with the detection chamber 200, the distance between the indicator 410 and the piston 213 changes by L, meaning the length of the sealed chamber is L, and L < S, indicating that the pressure inside the sealed chamber reaches the desired threshold. At this time, the indicator 410 is in its first position and is not exposed within the observation window 250.

[0084] like Figure 7 As shown, when the seal of the closed cavity fails, causing a pressure change, the external pressure becomes greater than the internal pressure. This causes the sealed chamber to push the indicator 410 towards the second end 113 of the detection chamber 200, increasing the length of the sealed chamber to L1, where L1 > L. The indicator 410 moves from the first position to the second position, appearing in the observation window 250. The friction between the indicator 410 and the inner wall of the detection chamber 200 should be as small as possible. When the friction is sufficiently small, L1 is approximately S.

[0085] For easier observation of the indicator section 410, such as Figures 5 to 7As shown, the indicator 410 has a marking area 411 that is different from other areas of the indicator 410. When the indicator 410 moves to the second position, the marking area 411 faces the observation window 250. If the marking area 411 is provided with a first color ring, other areas can be distinguished by color to improve the prominence of the prompt signal. Alternatively, the marking area 411 can be a highly reflective area.

[0086] In the above embodiments, a prompt signal is generated based on whether the indicator 410 appears in the observation window 250. In other embodiments, the indicator 410 may always appear in the observation window 250. To make the prompt signal more intuitive and create a clear contrast, the indicator 410 is provided with both an identification area 411 and a reference area 412, which are arranged sequentially away from the sealing assembly 300 along the axial direction of the detection cavity 200. When the indicator 410 is in the first position, the reference area 412 faces the observation window 250, such as... Figure 6 As shown; when the indicator 410 is in the second position, the marking area 411 faces the observation window 250, as... Figure 7 As shown. In this way, when the seal of the closed cavity fails and causes a pressure change, the tester can observe a significant change, thereby determining whether a leak has occurred.

[0087] In other embodiments, the indicator 410 is provided with both an identification area 411 and a reference area 412, which are arranged sequentially away from the sealing assembly 300 along the axial direction of the detection chamber 200. The detection chamber 200 is provided with an observation window 250 and a zero-position window 260. When the indicator 410 is in the first position, the reference area 412 faces the zero-position window 260, while the identification area 411 is not visible; when the indicator 410 is in the second position, the identification area 411 faces the observation window 250, while the reference area 412 is not visible. In this way, when the seal of the closed chamber fails and causes a pressure change, the tester can observe a significant change, thereby determining whether a leak has occurred.

[0088] The identification area 411 and the reference area 412 should be configured to be clearly different from each other. In one embodiment, the identification area 411 is provided with a first color ring, while the reference area 412 is provided with a second color ring, and the visual effects of the two color rings should be configured to be clearly different.

[0089] In other embodiments, when the pressure inside the closed cavity changes, the indicator 410 extends out of the detection cavity 200 and is observed. For example, one end of the indicator 410 may extend out of the detection cavity 200 and be observed. Furthermore, when the indicator 410 extends out of the detection cavity 200 and is observed, the indicator 410 may be provided with a marking area 411, such as a color ring.

[0090] In the above embodiments, the presence or absence of leakage in the endoscope 100 is determined by observing the movement of the indicator 410. In other embodiments, the pressure feedback unit 400 further includes a signal electrical circuit 440, which is triggered when the indicator 410 moves to generate an electrical signal, thereby determining whether the endoscope 100 has leaked.

[0091] refer to Figure 8 This diagram illustrates one embodiment of a signal electrical circuit 440. The signal electrical circuit 440 includes a first contact 421 and a second contact 422. The indicator portion 410 is conductive, specifically, the indicator portion 410 is provided with a conductive sheet 413. The first contact 421 and the second contact 422 can be disposed outside the detection cavity 200, and the conductive sheet 413 is also disposed outside the detection cavity 200 and connected to the indicator portion 410. Alternatively, the first contact 421, the second contact 422, and the conductive sheet 413 can all be disposed inside the detection cavity 200.

[0092] In this embodiment, when the pressure inside the sealed cavity changes, the indicator 410 moves along the axial direction of the detection cavity 200, forming different contact effects with the first contact 441 and the second contact 442, thereby triggering the signal electrical circuit to generate an electrical signal. Specifically, when the indicator 410 moves along the axial direction of the detection cavity 200, it switches the first contact 441 and the second contact 442 from the first on / off state to the second on / off state.

[0093] Specifically, the indicator 410 can switch between a first position and a second position. For example... Figure 8 As shown, the indicator 410 is in the first position, at which time the conductive sheet 413 on the indicator 410 is simultaneously in contact with the first contact 421 and the second contact 422. The conductive sheet 413 conducts the signal electrical circuit 440.

[0094] like Figure 9 As shown, when the sealed cavity fails, causing a pressure change, the indicator 410 will move to its second position under the influence of ambient pressure. At this time, the indicator 410 separates from at least one of the first contact 421 and the second contact 422 to trigger the signal electrical circuit 440. Based on the change in the on / off state, the signal electrical circuit 440 receives a 0 switching signal, which can control an alarm to sound, or, for example, send an abnormal signal to a computer.

[0095] refer to Figure 10 and Figure 11This illustrates another embodiment of the signal electrical circuit 440. The indicating part 410 includes a magnetic element 414; specifically, the indicating part 410 itself may be magnetic, or a magnetic element, such as a magnet, may be installed on it. The signal electrical circuit 440 includes a Hall distance sensor 443, which feeds back different signals based on changes in the position of the magnetic element 414, thereby determining whether there is an air leak. Similar to the previous embodiment, both the signal electrical circuit 440 and the magnetic element 414 can be disposed outside or inside the detection cavity 200.

[0096] Specifically, such as Figure 10 As shown, when the seal is normal, the indicator 410 is in its first position, and the magnetic component 414 and the Hall distance sensor 443 are at the normal distance. Figure 11 As shown, when the seal of the enclosed cavity fails, the indicator 410 moves to its first position, and the distance between the magnetic component 414 and the Hall distance sensor 443 decreases.

[0097] refer to Figure 12 This illustrates another embodiment of the signal electrical circuit 440. The signal electrical circuit 440 includes a signal transmitter 444 and a signal receiver 445, establishing a signal transmission path between them. The movement trajectory of the indicator 410 intersects this signal transmission path. Furthermore, when the indicator 410 switches from a first position to a second position, the transmission path between the signal transmitter 444 and the signal receiver 445 changes from the first of two states (on and off) to the second, thereby changing the receiving state of the signal receiver 445 and allowing for the determination of whether there is an air leak.

[0098] For example, an optical device 415 is fixed on the indicator 410. The signal transmitter 444 is specifically an optical signal transmitter, and the signal receiver 445 is specifically an optical signal receiver. Due to different sealing conditions, the indicator 410 may stop at different positions. When the seal is normal, the optical signal receiver can receive the signal emitted by the optical signal transmitter through the optical device 415. When the seal fails, the optical signal receiver cannot receive the signal from the optical signal transmitter through the optical device 415. Specifically, as... Figure 12 As shown, when the seal is normal, the optical device 415 reflects the signal emitted by the optical signal transmitter to the optical signal receiver. When the seal fails, the optical device 415 changes position following the movement of the indicator 410, and can no longer reflect the signal emitted by the optical signal transmitter to the optical signal receiver. Similar to the previous embodiment, both the signal electrical circuit 440 and the optical device 415 can be disposed outside or inside the detection cavity 200.

[0099] For example, signal transmitter 444 is an infrared light generator, and signal receiver 445 is an infrared light receiver. When indicator 410 moves, it can block or expose the light propagation path between them.

[0100] To improve the sensitivity of the indicator 410 when it is axially displaced in the detection cavity 200, such as Figure 11 As shown, the detection chamber 200 includes a first chamber for housing the indicator 410 and a second chamber for housing the piston 213. The inner diameter of the first chamber is d, and the inner diameter of the second chamber is D, where D > d. When the sealing rod 310 is installed, the piston 213 moves in the second chamber, and the compressed gas generated enters the first chamber, generating greater pressure. This ensures the pressure of the sealed air chamber between the piston 213 and the indicator 410, so that if the seal fails, the sealed air chamber can quickly push the indicator 410 to move.

[0101] like Figures 13 to 15 As shown, another embodiment with a sealing structure 1 is illustrated. In this embodiment, the detection chamber 200, the sealing assembly 200, and the pressure feedback unit 300 ( Figure 13 Module 4) is set on the mirror body 101.

[0102] and Figures 4 to 7 The embodiments involved are the same. In this embodiment, the sealing assembly 300 includes a sealing rod 310 and a piston 213 connected to the sealing rod 310. The sealing rod 310 has a sealing portion 311 and a connecting portion 312. Along the axial direction of the detection cavity 200, the sealing portion 311 slides and seals against the inner wall of the detection cavity 200, and the piston 213 slides and seals against the inner wall of the detection cavity 200; thus facilitating the installation of the sealing assembly 300 into the detection cavity 200. When the connecting portion 312 moves towards the interior of the detection cavity 200, i.e., towards the second end 220 of the detection cavity 200, to the predetermined mating position, the pressure inside the sealed cavity reaches the desired threshold and is greater than the ambient pressure. Once leakage occurs, the pressure inside the sealed cavity cannot guarantee the desired threshold. The connection between the connecting portion 3122 and the detection cavity 200 can be achieved by threaded engagement, plug-in engagement, etc., which will not be described in detail here.

[0103] The pressure feedback unit 400 includes a gas pressure sensor 450 disposed within the detection chamber 200 and a pressure detection circuit board 460 electrically connected to the gas pressure sensor 450. When the pressure inside the sealed chamber reaches a desired threshold using the sealing assembly 300, the gas pressure sensor 450 detects this desired threshold. When a leak occurs in the sealed chamber, causing a pressure change, the pressure detected by the gas pressure sensor 450 will fall below the aforementioned desired threshold, thereby generating an alert signal via the pressure detection circuit board 460. This alert may be issued via an indicator light or a buzzer on the pressure detection circuit board 460.

[0104] For example, a pressure detection circuit board 460 is disposed within the detection chamber 200 in an axial direction parallel to the detection chamber 200. A gas pressure sensor 450 is disposed on the pressure detection circuit board 460. A battery 461 for powering the gas pressure sensor 450 is also provided on the pressure detection circuit board 460. The battery 461 is disposed inside the detection chamber 200 to ensure the sealing of the detection chamber 200 itself. The pressure detection circuit board 460 may also be configured to be connected to an external power source.

[0105] Alternatively, the pressure feedback unit 400 can also be located inside the cavity of the endoscope 100.

[0106] like Figures 16 to 18 The diagram illustrates another embodiment of the sealing structure 1 sealing assembly 300 of this embodiment.

[0107] In this embodiment, the sealing assembly 300 includes an inflation rod 320, an elastic element 330, and a first sealing element 340 that are slidably sealed to the inner wall of the detection chamber 200. The inflation rod 320 includes an air inlet 321 communicating with the detection chamber 200. The elastic element 330 is configured to provide an elastic force that isolates the air inlet 321 from the detection chamber 200 by the first sealing element 340. The inflation rod 320 is movable when docked with the air pumping device 3, thereby allowing the air pumping device 3 to inflate the detection chamber 200 and establish an internal and external pressure difference. When the air pumping device 3 is removed, under the elastic force of the elastic element 330, the first sealing element 340 seals the air inlet 321, isolating the air inlet 321 from the detection chamber 200.

[0108] Specifically, the air inlet 321 of the inflation rod 320 has an inflation end 3211 and an air delivery end 3212 at its two ends, respectively. The inflation end 3211 is used to connect to an external air pumping device 3. The air delivery end 3212 is located inside the detection chamber 200.

[0109] An elastic element 330 is disposed between the inner wall of the detection cavity 200 and the inflation rod 320, and is configured to provide an elastic force that causes the inflation rod 320 to tend to move outward from the detection cavity 200. Specifically, the elastic element 330 may be a spring sleeved on the inflation rod 320.

[0110] The first sealing element 340 can be a sealing ring fitted on the inflation rod 320, but is not limited to this. Under the elastic force of the elastic element 330, the first sealing element 340 normally closes the air supply end 1312.

[0111] After assembly, refer to Figure 17The sum of the internal pressure of the sealed cavity and the elastic force exerted by the elastic element 330 on the inflation rod 320 is defined as F1, directed to the right; the sum of the external atmospheric pressure exerted on the inflation rod 320 and the frictional force between the inflation rod 320 and the inner wall of 200 is defined as F2, directed to the left. At this time, F1 equals F2. At this point, the inflation rod 130 is in the first working position, and the elastic element 330 provides the elastic force to keep the inflation rod 320 in the first working position. The air delivery end 3212 is sealed by the first sealing element 340.

[0112] refer to Figure 17 After the sealing assembly 300 is assembled into the detection chamber 200, the pumping device 3 is connected to the inflation end 3211 of the inflation rod 320. The pumping device 3 then presses the inflation rod 320 to the left, causing the inflation rod 320 to move to the second working position to the left. This exposes the air delivery end 3212 of the first sealing member 340, allowing the air delivery end 3212 to communicate with the detection chamber 200. Figure 18 As shown. In this way, the high-pressure gas from the pumping device 3 can enter the detection chamber 200 through the gas delivery end 3212, causing the pressure inside the sealed chamber to rise to a desired threshold. The gas pressure sensor 450 can detect this desired threshold. When the sealed chamber leaks and loses pressure, the pressure detected by the gas pressure sensor 450 will be lower than the aforementioned desired threshold, thereby generating a warning signal through the pressure detection circuit board 460. For example, a warning may be issued through an indicator light or a buzzer on the pressure detection circuit board 460.

[0113] Furthermore, the sealing assembly 300 also includes a second sealing element 350 sleeved on the inflation rod 320, and the second sealing element 350 is slidably sealed with the detection cavity 200. The opposite ends of the elastic element 330 abut against the second sealing element 350 and the detection cavity 200, respectively.

[0114] Furthermore, to improve the sealing effect, a third sealing element 360 is also provided inside the detection cavity 200. The third sealing element 360 is located between the first sealing element 340 and the second sealing element 350, and the third sealing element 360 is in sealing contact with the inner wall of the detection cavity 200. The inflation rod 320 passes through the third sealing element 360 and is slidably sealed with the third sealing element 360. The elastic element 140 abuts against the third sealing element 360.

[0115] Through the above means, when the inflation rod 320 slides, there are three seals between it and the inner wall of the detection cavity 200, which are respectively achieved by the first sealing element 340, the second sealing element 350 and the third sealing element 360, thereby more effectively preventing leakage of the closed cavity when the inflation rod 320 slides.

[0116] In the above embodiment, the sealing assembly 300 includes an inflation rod 310 with an air inlet 321. Therefore, the assembly process of the sealing assembly 300 and the detection chamber 200, and the establishment of the pressure difference between the inside and outside of the sealed chamber, can be carried out step by step. In this way, the assembled endoscope system has a sealed chamber with an internal pressure greater than the external environmental pressure. The user only needs to rely on the feedback from the gas pressure sensor 450 to determine whether a leak has occurred in the sealed chamber.

[0117] like Figures 19 to 25 As shown, a sealing structure 1 is illustrated in another embodiment. In this embodiment, the detection cavity 200, the sealing assembly 200, and the pressure feedback unit 300 are configured together as a separate module 4, which is detachably connected to the endoscope body 101 of the endoscope 100.

[0118] like Figure 25 As shown, the detection cavity 200 is specifically a hollow cylinder, but its shape is not limited to this; for example, it can be a rectangle. The first end of the detection cavity 200 is open for mounting the sealing assembly 300, and the second end 220 of the detection cavity 200 is equipped with a pressure feedback unit 400. A radially extending outlet 240 is provided on the wall of the detection cavity 200 adjacent to the second end 220. The outlet 240 communicates with the inner cavity of the endoscope 100 to form a closed cavity.

[0119] A fourth sealing element 370 is fitted onto the detection cavity 200. The fourth sealing element 370 is used to form a seal between the detection cavity 200 and the endoscope body 101 of the endoscope 100. For example, the detection cavity 200 is inserted into the endoscope body 101 and a seal is formed between it and the endoscope body 101 through the fourth sealing element 370.

[0120] The connection between the endoscope 100 and the endoscope body 101 is not limited to the examples described above. For example, the endoscope body 101 may have a retaining space, and the retaining space may have a connection channel communicating with the inner cavity of the endoscope 100. The housing 110 can be engaged in the retaining space and its communication port is connected to the connection channel.

[0121] The sealing assembly 300 is slidably sealed to the inner wall of the detection chamber 200. For example, with... Figures 4 to 7 The embodiments shown are the same. In this embodiment, as... Figure 21 and Figure 22As shown, in this embodiment, the sealing assembly 300 includes a sealing rod 310 and a piston 213 connected to the sealing rod 310. The sealing rod 310 has a sealing portion 311 and a connecting portion 312. Along the axial direction of the detection cavity 200, the sealing portion 311 slides and seals against the inner wall of the detection cavity 200, and the piston 313 slides and seals against the inner wall of the detection cavity 200; thus facilitating the installation of the sealing assembly 300 into the detection cavity 200. When the connecting portion 312 moves towards the interior of the detection cavity 200, i.e., towards the second end 220 of the detection cavity 200, to the predetermined mating position, the pressure inside the sealed cavity reaches the desired threshold and is greater than the ambient pressure. Once leakage occurs, the pressure inside the sealed cavity cannot guarantee the desired threshold. The connection between the connecting portion 3122 and the detection cavity 200 can be achieved through threaded engagement, plug-in engagement, etc., which will not be elaborated further.

[0122] A pressure detection circuit board 460 is disposed at the second end 220 of the detection chamber 200 and closes the second end. The pressure detection circuit board 460 also has a battery 461 that powers the gas pressure sensor 450. The battery 461 is located inside the detection chamber 200, which helps ensure the sealing of the detection chamber 200 itself. The pressure detection circuit board 460 can also be configured to connect to an external power source.

[0123] After the sealing assembly 300 is installed in the detection chamber 200, the inner cavity of the endoscope 100, the detection chamber 200, and the sealing assembly 300 are airtightly connected to form a sealed cavity. The gas pressure sensor 450 can detect the pressure within the sealed cavity. When a leak occurs in the sealed cavity, causing a pressure change, the gas pressure sensor 450 detects this pressure change and generates an alert signal via the pressure detection circuit board 460. For example, an alert may be issued via an indicator light or a buzzer on the pressure detection circuit board 460.

[0124] like Figures 26 to 29 The diagram illustrates a sealing structure 1 in another embodiment. This embodiment is similar to... Figures 16 to 18 The difference between the embodiments is that the configuration of the sealing assembly 300 is different.

[0125] like Figure 27 and Figure 28As shown, the sealing assembly 300 includes a sealing rod 310 and a resilient reset member 380. The resilient reset member 380, for example a spring, is disposed between the sealing rod 310 and the inner wall of the detection cavity 200. The resilient reset member 380 is configured to provide pressure that causes the sealing rod 310 to move outwards from the detection cavity 200. Specifically, the sealing rod 310 includes a sealing portion 311, a connecting portion 312, and a rod portion 315 connected to the sealing portion 311. The sealing portion 311 is slidably sealed to the inner wall of the detection cavity 200, thereby facilitating the assembly of the sealing assembly 300. The connecting portion 312 is specifically threadedly connected to the detection cavity 200. The resilient reset member 380 is sleeved on the rod portion 315.

[0126] The pressure feedback unit 400 includes an indicator 410 disposed on the side of the sealing portion 311 of the sealing rod 310 facing the outside. Specifically, the indicator 410 is disposed on the sealing portion 310 and forms part of the sealing rod 310, i.e., the indicator 410 and the sealing rod 310 are integrally formed; they can also be detachably connected. The two ends of the elastic reset member 380 abut against the sealing portion 311 of the sealing rod 310 and the inner wall of the detection chamber 200, respectively.

[0127] The following is combined Figure 27 and Figure 28 Briefly describe the process of setting up the sealing structure.

[0128] like Figure 27 The diagram illustrates the state of the sealing assembly 300 immediately after it is assembled into the detection chamber 200. The connecting portion 312 is fixedly connected to the inner wall of the detection chamber 200, causing the elastic reset member 380 to be in a compressed state.

[0129] like Figure 28 As shown, after the sealing assembly 300 is installed in the detection chamber 200, the connecting part 312 is disconnected from the inner wall of the detection chamber 200. If the two are connected by threads, the threaded connection is disengaged. At this time, the elastic force of the elastic reset member 380 pushes the sealing rod 310 outward (to the right in the figure), which will draw out part of the vacuum in the closed cavity, causing the internal pressure of the closed cavity to drop. When the elastic force of the elastic reset member 380 acting on the sealing rod 310 is equal to the pressure of the external atmospheric pressure acting on the sealing rod 310, the sealing rod 310 stops moving. At this time, the indicator part 410 is in its first position. At this time, the sealing assembly 300 is installed in the detection chamber 200, and the inner cavity 103, the detection chamber 200 and the sealing assembly 300 are airtightly connected to form a closed cavity. At the same time, the closed cavity is in a negative pressure state, that is, the pressure inside the closed cavity is less than the external air pressure.

[0130] During the test, such as Figure 29As shown, when the sealing environment inside the endoscope 100 fails, the connecting part 312 remains detached from the inner wall of the detection chamber 200. At this time, the pressure inside the sealed chamber will rise to match the atmospheric pressure, making the sum of the pressure inside the sealed chamber and the elastic force of the elastic reset member 380 acting on the sealing rod 310 greater than the pressure of the external atmospheric pressure acting on the sealing rod 310. The sealing rod 310 moves outward again, thereby driving the indicator part 410 to move to the second position, thus generating a prompt signal.

[0131] For example, when the indicator 410 moves to the second position, the indicator 410 is at least partially exposed in the detection cavity 200 for observation. The tester can determine that a leak has occurred by observing the indicator 410 exposed in the detection cavity 200. Further, the indicator 410 is provided with an identification area 411. This identification area 411 may be provided with a third color ring. When the indicator 410 is in the second position, the third color ring is exposed in the detection cavity 200.

[0132] For example, as described in the foregoing embodiments, an observation window 250 may be provided on the detection cavity 200 to observe the indicator 410 when it moves to the second position. In this case, the indicator 410 is not limited to being located on the right side of the sealing rod 310; it can be located at any suitable position, such as the left side or the center. Furthermore, in this embodiment, various variations of the indicator 410 are implemented in accordance with… Figures 3 to 7 The corresponding textual descriptions are the same, so I will not repeat them here.

[0133] In the above embodiments of this application, under normal circumstances, the pressure change is set to provide an indication signal when it does not exceed 35 kPa. If it exceeds this range, the structure can be locally adjusted (such as adjusting the proportion of volume), or the sensor type can be added or changed.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0136] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0137] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0138] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A sealing structure, characterized in that, The sealing structure includes: A tool having a flexible tube and an inner cavity communicating with the flexible tube; The detection cavity is fixedly mounted on the tool and is interconnected with the inner cavity. The detection cavity includes a first channel and a second channel, wherein the inner diameter of the second channel is larger than the inner diameter of the first channel. A sealing assembly is disposed in the detection chamber, and the inner cavity, the detection chamber, and the sealing assembly are airtightly connected to form a closed cavity; A pressure feedback unit is used to feedback pressure changes within the closed cavity. The pressure feedback unit includes an indicator, which is located in the first channel of the detection cavity. When the pressure within the closed cavity changes, the indicator moves along the axial direction of the detection cavity to feedback the pressure change within the closed cavity. The sealing assembly includes a sealing rod and a piston connected to the sealing rod. The sealing rod is inserted into the detection cavity to seal the detection cavity, and the inner cavity forms the sealed cavity. The piston is located in the second channel of the detection cavity.

2. The sealing structure according to claim 1, characterized in that, The tool further includes: a housing connected to the proximal end of the flexible tube, the detection cavity located on one side of the housing, and the inner cavity defined by the housing and the flexible tube; and An opening located between the inner cavity and the detection cavity, the opening allowing the inner cavity and the detection cavity to communicate with each other.

3. The sealing structure according to claim 1, characterized in that, The pressure feedback unit also includes an observation window, through which the indicator can be observed when the pressure inside the closed cavity changes.

4. The sealing structure according to claim 3, characterized in that, The indicator can move from a first position to a second position. The indicator is provided with an identification area and a reference area. The identification area and the reference area are disposed away from the sealing assembly along the axial direction. When the indicator is in the first position, the reference area is facing the observation window. When the indicator is in the second position, the identification area is facing the observation window.

5. The sealing structure according to claim 1, characterized in that, When the pressure inside the closed cavity changes, the indicator extends out of the detection cavity and is observed.

6. The sealing structure according to claim 1, characterized in that, The indicator is disposed on the sealing rod and located at the end of the sealing rod away from the inner cavity.

7. The sealing structure according to claim 6, characterized in that, The sealing rod makes slidable sealing contact with the detection cavity. The sealing assembly also includes an elastic reset member disposed between the sealing rod and the inner wall of the detection cavity. The elastic reset member is configured to provide an elastic force that causes the sealing rod to have a tendency to move toward the outside of the detection cavity. The sealed cavity is under negative pressure.

8. The sealing structure according to claim 1, characterized in that, The pressure feedback unit also includes a signal electrical circuit, which is triggered by the indicator to generate an electrical signal when the pressure inside the enclosed cavity changes.

9. The sealing structure according to claim 8, characterized in that, The signal electrical circuit includes a first contact and a second contact. When the indicator moves along the axial direction of the detection cavity, the first contact and the second contact switch from the first state of being on to the second state of being off. Alternatively, the indicator includes a magnetic element. The signal electrical circuit includes a Hall distance sensor, which feeds back different signals according to the position change of the magnetic element. Alternatively, the signal electrical circuit includes a signal transmitting end and a signal receiving end. When the indicator moves along the axial direction of the detection cavity, the transmission path between the signal transmitting end and the signal receiving end switches from the first state of being on to the second state of being off.

10. The sealing structure according to claim 1, characterized in that, The pressure feedback unit includes a gas pressure sensor disposed in the inner cavity of the detection chamber or tool, and a pressure detection circuit board electrically connected to the gas pressure sensor.

11. The sealing structure according to claim 10, characterized in that, The pressure detection circuit board is arranged in a manner parallel to the axial direction of the detection cavity; or, the sealing assembly is arranged at the first end of the detection cavity in the axial direction, and the pressure detection circuit board is arranged at the second end of the detection cavity and closes the second end.

12. The sealing structure according to claim 10, characterized in that, The detection chamber is provided with a first sealing element; the sealing assembly includes an inflation rod and an elastic element, the inflation rod includes an air inlet communicating with the detection chamber, and the elastic element is configured to provide an elastic force that isolates the air inlet from the detection chamber by the first sealing element.

13. An endoscope system, characterized in that, include: The sealing structure as described in any one of claims 1-12, wherein the tool is an endoscope; The control system is communicatively connected to the endoscope.

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