Suction valve, handle and endoscope

Abstract

The present invention provides a suction valve, handle, and endoscope, relating to the field of medical devices. The present invention comprises a valve body having an inner cavity, the valve body being provided with a negative pressure port, a sample port, and an atmospheric port, each connected to the inner cavity; and a valve flap, the valve flap sealingly engaging with the inner wall of the inner cavity to separate the inner cavity into a first cavity and a second cavity, each independent of the other. The valve flap is rotatably disposed in the inner cavity about a first axis to switch the suction valve between a suction position and a closed position. When the valve flap rotates relative to the valve body, the valve flap slidably engages with the inner wall of the inner cavity. When the suction valve is in the suction position, the negative pressure port and the sample port are connected to the first cavity, and the atmospheric port is connected to the second cavity; when the suction valve is in the closed position, the negative pressure port and the atmospheric port are connected to the second cavity. Compared with the prior art, the present invention has the advantage that during use of the suction valve, the valve flap can self-clean the inner cavity while moving, thereby reducing the risk of pathogen residue.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a suction valve, a handle and an endoscope. Background Art

[0002] As an advanced medical device, endoscopes have been widely used in the medical field. In particular, in diagnostic examinations and minimally invasive surgeries, endoscopes, with their high-definition imaging and minimally invasive nature, provide doctors with a means of directly observing the patient's internal organs. This not only improves the early detection of diseases but also reduces patient suffering. In actual clinical practice, doctors often use endoscopy to detect possible fluid accumulation in patients. These accumulations may be caused by lesions such as inflammation, infection, or tumors, and in some cases require drainage and removal through endoscopy.

[0003] However, after use, endoscopes often come into contact with the patient's bodily fluids and tissues, resulting in residual pathogens on the device. These pathogens can be transmitted to other patients through reuse, creating the risk of cross-infection. Therefore, endoscopes must undergo rigorous sterilization and disinfection after each use. However, the complex structure of endoscopes and the inclusion of numerous channels make the sterilization and disinfection process extremely complex. To ensure thorough cleaning, highly efficient disinfection equipment and expensive disinfectants are often required. This not only increases the difficulty and time of the operation, but also significantly increases overall medical costs. Summary of the Invention

[0004] In order to solve the above problems, the present application provides a suction valve, a handle and an endoscope.

[0005] In a first aspect, the present application provides a suction valve, which adopts the following technical solution:

[0006] A suction valve, applied to an endoscope, comprising:

[0007] a valve body having an inner cavity, wherein the valve body is provided with a negative pressure port, a sample port, and an atmospheric port communicating with the inner cavity; and

[0008] a valve flap, the valve flap being in dynamic sealing engagement with the inner wall of the inner cavity to separate the inner cavity into a first cavity and a second cavity that are independent of each other, the valve flap being rotatably disposed in the inner cavity about a first axis as a rotation center to switch the suction valve between a suction position and a closed position;

[0009] Wherein, when the suction valve is in the suction position, the negative pressure port and the sample port are in communication with the first cavity, and the atmospheric port is in communication with the second cavity;

[0010] When the suction valve is in the closed position, the negative pressure port and the atmospheric port are in communication with the second cavity, and the sample port is in communication with the first cavity.

[0011] Preferably, the side wall of the valve flap facing the first cavity is a first side surface, and the first side surface is an arc-shaped surface.

[0012] Preferably, when the suction valve is in the suction position, the inlet direction of the negative pressure port and the inlet direction of the sample port are tangent to the first side surface.

[0013] Preferably, the contact portion between the valve flap and the side wall of the inner cavity is a sealing portion, and the valve flap includes a support body and an elastic body provided on the support body, wherein:

[0014] The valve flap is provided with the elastic body at least at the sealing portion, and the elastic body is in sealing cooperation with the inner wall of the inner cavity;

[0015] And / or, the valve flap is provided with the support body at least at the sealing portion, and the elastic body covers the support body at least at the sealing portion.

[0016] Preferably, the support body is provided with a hollow portion, which extends from the first cavity side to the second cavity side, and the elastomer covers the hollow portion. When the elastomer in the hollow portion is subjected to force, it can be deformed toward the first cavity side or the second cavity side.

[0017] Preferably, the side wall of the inner cavity is a surface of revolution centered on the first axis.

[0018] Preferably, the negative pressure port, the sample port and the atmospheric port are distributed on the valve body in a circumferential direction around the first axis;

[0019] And / or, in the diameter direction of the inner cavity, both sides of the valve flap are dynamically sealed with the side walls of the inner cavity.

[0020] Preferably, the suction valve further comprises a rotating member, the rotating member being connected to the valve flap, and the rotating member can drive the valve flap to rotate under the driving force of an external force, so that the suction valve can be switched between the suction position and the closing position;

[0021] And / or, the valve flap is detachably arranged in the inner cavity, and the valve body is provided with a valve cover;

[0022] And / or, the inner wall of the first cavity is smoothly arranged.

[0023] In a second aspect, the present application provides a handle, which adopts the following technical solution:

[0024] A handle comprises the suction valve described in the above technical solution.

[0025] In a third aspect, the present application provides an endoscope, which adopts the following technical solution:

[0026] An endoscope comprises the handle described in the above technical solution.

[0027] The present invention has the following advantages and beneficial effects:

[0028] In actual use, the suction valve is usually used to aspirate the patient's body fluids. Therefore, when cleaning the endoscope, the cleaning and disinfection process of the suction valve becomes both complicated and critical. Traditional cleaning methods rely on efficient disinfection equipment and expensive disinfectants to ensure the thorough cleaning of the suction valve. This solution addresses this problem by improving the structure of the suction valve so that during the adjustment process, the valve flap can slide in the inner cavity, thereby achieving a scraping effect on the surface of the inner cavity. This means that during the use of the suction valve, the valve flap can self-clean the inner cavity while moving, reducing the risk of residual pathogens. In addition, because the valve flap can be rotatably set in the inner cavity, dead corners inside the inner cavity are avoided, and residual tissue is prevented from being compacted in the corners during movement, making subsequent cleaning more thorough.

[0029] This structural design not only gives the suction valve a natural self-cleaning function during use, but also greatly simplifies subsequent cleaning and disinfection steps. During the cleaning process, the doctor or operator can operate the valve flap to slide back and forth within the inner cavity, thereby using the scraping effect of the valve flap to further clean the inner cavity surface while the flushing fluid flows through the inner cavity. This active scraping method significantly improves cleaning efficiency, reduces dependence on expensive disinfectants, and ensures thorough cleaning of the suction valve, thereby effectively reducing the risk of cross-infection. This not only reduces the difficulty and time of operation, but also significantly reduces overall medical costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

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

[0032] Figure 2 is a first cross-sectional view of an embodiment of the present application;

[0033] Figure 3 is a second cross-sectional view of the embodiment of the present application;

[0034] Figure 4 It is a structural diagram of the valve disc;

[0035] Figure 5 is a schematic structural diagram of the support body;

[0036] Figure 6 It is a schematic diagram of the structure of an endoscope;

[0037] Figure 7 This is a schematic diagram of the internal structure of an endoscope.

[0038] The following are marked in the figure:

[0039] 10. Endoscope; 11. Handle; 100; Valve body; 110. Inner cavity; 120. Negative pressure port; 130. Sample port; 140. Atmospheric pressure port; 150. First cavity; 160. Second cavity; 200. Valve flap; 210. First side; 220. Sealing portion; 230. Support body; 231. Hollow portion; 240. Elastomer; 250. Second side; 300. Rotating member; 400. Hook. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0041] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0042] The inventors discovered that the suction valve is often one of the most challenging components to clean during endoscope cleaning. This is because the valve is used to draw fluids or tissue samples from the patient's body during operation, and these substances often form residues within the valve's complex internal structure. The lumen and passages within the valve are narrow and often have numerous bends and corners, making it difficult to fully clean every area.

[0043] Furthermore, when the suction valve switches between operating states, its valve core shifts, potentially pushing liquid or tissue into blind spots within the valve, compressing it in difficult-to-clean locations. Once this residual material is compacted, it is difficult to completely remove, even with efficient disinfection equipment and specialized cleaning fluids. This not only prolongs endoscope cleaning time but also increases cleaning costs.

[0044] More seriously, if pathogens or residual tissue within the suction valve are not completely removed, there is a risk of cross-infection during the next use. To reduce this risk, medical institutions have to invest more resources and use more expensive equipment and consumables, which undoubtedly increases the financial burden on hospitals.

[0045] To address the aforementioned issues, the present application provides a suction valve. This valve features a flap that rotates relative to the inner cavity. This structure allows the flap to effectively scrape residual material from the inner cavity walls as it rotates or slides within the cavity. Due to the close fit and sliding interaction between the flap and the inner cavity, this scraping action continues during use, thereby reducing the accumulation of pathogens and tissue residues.

[0046] This design not only gives the suction valve a natural self-cleaning function but also significantly reduces the risk of dead spots forming inside the valve body. The valve disc's rotational movement within the inner cavity prevents liquid or tissue from remaining in hard-to-clean corners and prevents these substances from being compressed in dead spots. This means that in actual use, the suction valve can be cleaned more easily and thoroughly, reducing reliance on expensive cleaning equipment and disinfectants, thereby effectively reducing cleaning difficulty and medical costs.

[0047] The following is combined with Figures 1 to 7 , a suction valve, handle and endoscope provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0048] The first aspect of this embodiment describes the suction valve in detail.

[0049] Reference Figure 6 、 Figure 7 The suction valve of this embodiment is applied to the endoscope 10, specifically to the handle 11 of the endoscope 10. The suction valve is connected to the negative pressure device to achieve negative pressure suction of fluid, blood clots, tissues, etc. in the body.

[0050] Reference Figure 1 、 Figure 2The suction valve of this embodiment includes a valve body 100 and a valve flap 200. The valve body 100 has an inner cavity 110, which provides a space for the valve flap 200. The valve flap 200 dynamically seals against the inner wall of the inner cavity 110 to separate the inner cavity 110 into a first chamber 150 and a second chamber 160, which are independent of each other. The valve flap 200 is rotatably mounted within the inner cavity 110 about a first axis to switch the suction valve between a suction position and a closed position. When the valve flap 200 rotates relative to the valve body 100, the valve flap 200 slides against the inner wall of the inner cavity 110. The rotation of the valve flap 200 within the inner cavity 110 means that part of the inner wall of the inner cavity 110 is designed as a curved surface structure centered on the first axis, ensuring a good sealing fit between the inner wall of the inner cavity 110 and the valve flap 200 during switching. It is understood that dynamic sealing refers to the ability of the valve flap 200 and the valve body 100 to maintain a seal during relative rotation.

[0051] Reference Figure 2 、 Figure 3 The valve body 100 also includes an atmospheric port 140, a negative pressure port 120 and a sample port 130 that are connected to the inner cavity 110. The sample port 130 is used to communicate with the inner cavity 110 of the body, and is the entrance for effusion, blood clots, tissues, etc. to enter the suction valve; while the negative pressure port 120 is used to discharge effusion, blood clots, tissues, etc. For example, when necessary, through the continuous operation of the negative pressure suction device, the negative pressure port 120 can continuously generate suction to suck in and discharge substances in the body through the sample port 130. In addition, the atmospheric port 140 is connected to the outside atmosphere. When suction is not required, the valve flap 200 can be adjusted to allow the atmospheric port 140 to communicate with the negative pressure port 120, thereby reducing the need to frequently start and shut down the negative pressure suction device and optimizing the use efficiency of the equipment.

[0052] In some embodiments, during the specific operation of the suction valve, the valve flap 200 may be in different working states depending on its position. Figure 2 、 Figure 3 When the suction valve is in the suction position, the negative pressure port 120 and the sample port 130 are connected to the first chamber 150. The sample port 130 is connected to the patient's internal fluid, blood clot, or tissue, while the negative pressure port 120 is connected to the negative pressure suction device. Through negative pressure suction, the body's material is drawn into the first chamber 150 and discharged from the sample port 130. At the same time, the atmospheric port 140 is connected to the second chamber 160.

[0053] When the suction valve is in the closed position, the negative pressure port 120 and the atmospheric pressure port 140 communicate with the second chamber 160, while the sample port 130 communicates with the first chamber 150. In this state, the connection between the sample port 130 and the body is sealed, preventing external air from entering the body through the sample port 130. This design improves safety and helps prevent external bacteria or contaminants from entering the patient's body through the sample port 130.

[0054] In actual use, the atmospheric port 140 is always connected to the second lumen 160, while the sample port 130 is always connected to the first lumen 150. This design not only keeps the aspirated tissue and body fluids confined to the first lumen 150, reducing the area requiring cleaning and simplifying the cleaning process. Furthermore, the connection between the atmospheric port 140 and the second lumen 160 effectively prevents foreign matter from entering the first lumen 150 and contaminating the interior of the endoscope 10.

[0055] Through this structural design, the valve flap 200 of this embodiment can slide within the inner cavity 110 during the adjustment process of the suction valve. This sliding action not only switches the suction valve between different operating states, but also allows the valve flap 200 to produce a certain scraping effect on the surface of the inner cavity 110. This design helps to reduce residues such as accumulated fluid or tissue fragments in the inner cavity 110, thereby simplifying the subsequent cleaning process of the suction valve, reducing the risk of pathogen residue, and further reducing the possibility of cross-infection.

[0056] In some embodiments, reference Figure 1 、 Figure 3 A return spring is provided between the valve flap 200 of the suction valve and the valve body 100. The return spring may be a coil spring, which utilizes its two end pins to connect the portion of the valve flap 200 extending outside the valve body 100 to the valve body 100 or to the structure where the valve body 100 is installed, so that the valve flap 200 can be twisted and reset relative to the valve body 100. Exemplarily, the suction valve is in a closed position in the initial state. In this state, the negative pressure port 120 and the atmospheric port 140 are respectively connected to the second cavity 160, and the sample port 130 is connected to the first cavity 150. When it is necessary to aspirate liquid or tissue in the body, the return spring is deformed and stored in energy by rotating the valve flap 200 until the valve flap 200 is rotated to the suction position, and the negative pressure port 120 and the sample port 130 are respectively connected to the first cavity 150, and the suction process begins.

[0057] After the suction operation is completed, release the external force driving the valve flap 200, and the reset spring will release its stored energy, automatically driving the valve flap 200 back to the closed position. This design not only simplifies the operation, but also enables the suction valve to automatically switch to the initial state, thereby avoiding the risks caused by human operational errors. According to actual needs, the initial state of the suction valve can be a suction position or a closed position, depending on the specific application scenario. Through this structural design, the suction valve in this embodiment can automatically return to a safe state when continuous suction is not required, reducing the frequent operation of the negative pressure suction device, and also reducing the risk of accumulation of residues in the inner cavity 110.

[0058] According to an alternative embodiment, referring to Figure 3 、 Figure 4The sidewall of the valve flap 200 facing the first chamber 150 is the first side surface 210, which is an arcuate surface. This design aims to make the inner wall of the first chamber 150 smoother, thereby reducing potential dead corners and preventing the accumulation of tissue or liquid in these areas during use. Furthermore, the smooth structure of the first side surface 210 reduces the adhesion of tissue or liquid on the surface of the valve flap 200, further enhancing the self-cleaning effect of the valve and simplifying subsequent cleaning and disinfection processes. This design helps to reduce the risk of cross-infection and improve the safety and service life of the device.

[0059] This curved surface design allows the portion of the valve flap 200 in contact with the inner wall of the inner cavity 110 to be thicker, thereby increasing the contact area between the valve flap 200 and the inner wall of the inner cavity 110. This increased contact area helps to enhance the sealing between the valve flap 200 and the inner cavity 110, effectively preventing mutual contamination between the first cavity 150 and the second cavity 160. Furthermore, the curved surface design provides a better scraping effect when the valve flap 200 rotates, thereby removing accumulated fluid or tissue from the inner cavity 110 and enhancing the self-cleaning function of the valve flap 200. This design helps ensure that the valve maintains a high degree of sealing during operation, while also improving cleaning efficiency and reducing the difficulty of cleaning and disinfection.

[0060] According to an alternative embodiment, referring to Figure 2 、 Figure 3 , when the suction valve is in the suction position, the inlet direction of the negative pressure port 120 and the inlet direction of the sample port 130 are tangent to the first side 210. In this configuration, the body fluid or tissue entering the inner cavity 110 from the sample port 130 will flow to the negative pressure port 120. In this process, the curved surface design of the first side 210 provides a guiding effect, so that the fluid can flow along a predetermined path when passing through the inner cavity 110 and be quickly guided to the negative pressure port 120. This curved surface design helps to reduce dead corners in the inner cavity 110, thereby improving the discharge efficiency of the fluid. This not only allows body fluids or tissues to be discharged more quickly, but also reduces the accumulation of residues in the inner cavity 110, making the subsequent cleaning process easier. This design helps to ensure the efficient operation of the suction valve, while simplifying maintenance and cleaning operations, thereby improving the overall use efficiency of the equipment.

[0061] According to an optional embodiment, the sidewall of the valve flap 200 facing the second cavity 160 is a second side surface 250, and the second side surface 250 is an arcuate surface. When the suction valve is in the closed position, the inlet direction of the negative pressure port 120 and the inlet direction of the atmospheric port 140 are tangent to the second side surface 250. This arcuate surface design can optimize the flow path of the airflow, allowing the gas passing through the negative pressure port 120 and the atmospheric port 140 to flow smoothly along the second side surface 250, thereby reducing airflow turbulence within the inner cavity 110, reducing noise, and helping to improve the sealing effect of the valve. Through this structural design, the suction valve can more effectively isolate the gases in different cavities when in the closed position, preventing cross-contamination and improving the operational stability of the valve. Similarly, this arcuate surface design can make the portion of the valve flap 200 in contact with the inner wall of the inner cavity 110 thicker, thereby increasing the contact area between the valve flap 200 and the inner wall of the inner cavity 110. This increased contact area helps to enhance the sealing between the valve flap 200 and the inner cavity 110 , and effectively prevents mutual contamination between the first cavity 150 and the second cavity 160 .

[0062] According to an alternative embodiment, referring to Figure 3 、 Figure 4 The contact point between the valve flap 200 and the side wall of the inner cavity 110 is the sealing portion 220. Figure 5 As shown, the valve flap 200 includes a support body 230 and an elastic body 240 disposed on the support body 230. The valve flap 200 is provided with the elastic body 240 at least at the sealing portion 220. The elastic body 240 seals against the inner wall of the inner cavity 110. The support body 230 provides structural support, ensuring that the valve flap 200 maintains a certain shape and rigidity, while the elastic body 240 provides elasticity to enhance the sealing effect. For example, the elastic body 240 is only provided at the sealing portion 220. During the process of contact between the valve flap 200 and the side wall of the inner cavity 110, the elastic body 240 can apply a certain pressure to the contact area, thereby effectively filling any gaps, reducing the risk of leakage, and ensuring the durability of the seal.

[0063] In some embodiments, reference Figure 4 、 Figure 5The elastomer 240 completely covers the support body 230. That is, the elastomer 240 is not only located at the sealing portion 220 but also distributed in other areas of the valve flap 200, forming a fully covered structure. This design ensures that the entire valve flap 200 is covered by the elastomer 240. With this structure, when tissue impacts the surface of the valve flap 200, the elastomer 240 effectively cushions the impact. This cushioning effect helps mitigate the direct impact of the impact on the tissue, thereby preserving its original shape or form. This is crucial for subsequent sampling and inspection, as maintaining the original state of the tissue improves sampling accuracy and reliability. The comprehensive coverage of the elastomer 240 provides uniform elastic support, effectively dispersing the impact force on the valve flap 200 when impacted, reducing localized pressure concentrations. This not only helps protect the integrity of the tissue during the sampling process, but also improves the durability and longevity of the valve flap 200. Through this design, this embodiment can better meet the operational requirements of the suction valve when handling tissue in practical applications.

[0064] As the valve flap 200 rotates within the inner cavity 110, the sealing portion 220 slides against the sidewalls of the inner cavity 110. The presence of the elastic member 240 not only maintains the seal during rotation but also allows the valve flap 200 to maintain appropriate elasticity and flexibility under different operating conditions. This design enhances the adaptability of the sealing portion 220, ensuring that the sealing effect is not affected by friction or wear during the sliding engagement, thereby ensuring the suction valve's sealing performance under various operating conditions.

[0065] According to an alternative embodiment, referring to Figure 4 、 Figure 5 The valve flap 200 is provided with a support body 230 at least at the sealing portion 220, and the elastic body 240 covers the support body 230 at least at the sealing portion 220. Specifically, the support body 230 can be a rigid structure to provide better support. For example, the support body 230 can be composed of a frame structure formed of metal or a hard material, and the elastic body 240 is attached to the rigid structure.

[0066] In this design, the rigid structure of the support body 230 effectively supports the overall shape of the valve flap 200, ensuring stable pressure when in contact with the inner wall of the inner cavity 110. This structure ensures that the pressure applied to the sealing portion 220 of the valve flap 200 remains within an appropriate range when in contact with the inner wall of the inner cavity 110, thereby improving the sealing effect. The elastic body 240 covers the support body 230, providing the necessary elastic support, allowing the sealing portion 220 to maintain good sealing performance during the sliding fit.

[0067] The rigidity of support body 230 not only enhances the structural stability of valve flap 200 but also ensures the durability of sealing portion 220 during use. The flexibility of elastomer 240 compensates for minor irregularities on the inner surface of inner cavity 110, thereby enhancing the sealing effect. Overall, this design can improve the sealing performance of valve flap 200 in practical applications, reduce the risk of leakage, and ensure that valve flap 200 maintains a stable sealing effect during operation.

[0068] According to an alternative embodiment, referring to Figure 4 、 Figure 5 The support body 230 is provided with a hollow portion 231 extending from the first chamber 150 to the second chamber 160. The elastic body 240 covers the hollow portion 231. For example, when the elastic body 240 covers the support body 230 and its hollow portion 231, the hollow portion deforms under pressure. This deformation smoothes the surface of the elastic body 240, thereby improving the guidance of the liquid after sampling. For example, when the suction valve is in the aspiration position, liquid or other tissue within the first chamber 150 pushes the elastic body 240 at the hollow portion 231 toward the second chamber 160, making the flow path within the first chamber 150 smoother and more fluid. When the suction valve is in the closed position, air within the second chamber 160 pushes the elastic body 240 at the hollow portion 231 toward the first chamber 150, thereby better guiding air flow and reducing noise during airflow. This not only enhances the sealing effect but also improves the operating experience.

[0069] According to an optional embodiment, the side wall of the inner cavity 110 is a rotational surface centered on the first axis. This design enables the valve flap 200 to fully contact the side wall of the inner cavity 110 during rotation, achieving an effective scraping effect. This rotational surface structure not only helps to remove any fluid accumulation and tissue fragments that may be present in the inner cavity 110, but also makes the inner wall of the inner cavity 110 smoother, reduces the formation of dead corners, and thus improves the thoroughness of cleaning. This structural design helps to optimize the self-cleaning function of the suction valve, reduces the existence of dead corners during cleaning and disinfection, and ensures the hygiene and operational efficiency of the valve.

[0070] It is understandable that when the tissue or liquid enters the negative pressure port 120 from the sample port 130, it will pass through the inner cavity 110 of the suction valve. This flow path is designed as a single channel without branches, so that the fluid can flow smoothly from the sample port 130 to the negative pressure port 120 along a continuous path. In this process, the area through which the fluid flows is entirely composed of the inner wall of the inner cavity 110 and the side wall of the valve flap 200, forming a smooth and continuous flow channel. The design of the flow channel avoids any obvious hanging points, protrusions or grooves as much as possible, thereby reducing the risk of fluid retention and blockage, and ensuring that the fluid passes smoothly through the inner cavity 110. In addition, this structure helps to reduce the adhesion of tissue or liquid to the inside of the inner cavity 110 during the flow process, which facilitates subsequent cleaning and maintenance.

[0071] In some embodiments, the overall structure of the suction valve is designed to be cylindrical, which is relatively simple and easy to manufacture and maintain. Furthermore, the design of this suction valve can be improved according to actual needs. For example, it can be designed to be flatter to reduce the space it occupies. This flat design not only adapts to confined operating environments but also reduces the overall height of the device, helping to optimize the layout of the equipment and improve the convenience of operation. Even with a relatively flat structure, the suction valve can still maintain good sealing and fluid guidance effects, ensuring its functionality in various medical applications.

[0072] According to an alternative embodiment, referring to Figure 2 、 Figure 3 , the negative pressure port 120, the sample port 130 and the atmospheric port 140 are distributed on the valve body 100 in the circumferential direction around the first axis. The valve flap 200 can connect or isolate the negative pressure port 120, the sample port 130 and the atmospheric port 140 with the corresponding cavity in turn during the rotation process, so that the suction valve can effectively control the flow path of the liquid or gas in the body under different conditions. This structure not only improves the sealing and operating accuracy of the suction valve, but also simplifies the manufacturing process of the valve, making it more practical. Preferably, the negative pressure port 120, the sample port 130 and the atmospheric port 140 are distributed at equal intervals along the circumferential direction of the valve body 100. Specifically, the angle between these ports is 120 degrees.

[0073] According to an optional embodiment, the valve flap 200 seals against the sidewalls of the inner cavity 110 on both sides along the diameter of the inner cavity 110. When the valve flap 200 rotates relative to the valve body 100, the valve flap 200 slides against the sidewalls of the inner cavity 110. This design ensures that the valve flap 200 maintains a seal with the sidewalls of the inner cavity 110 during rotation, eliminating the risk of leakage caused by rotation. The sliding effect of the seal ensures that the pressure and fluid in the inner cavity 110 can be effectively controlled when the valve flap 200 switches between different operating states, thereby improving the sealing performance and operational stability of the suction valve.

[0074] According to an alternative embodiment, referring to Figure 1 、 Figure 2 The suction valve also includes a rotating member 300, which is connected to the valve flap 200. When driven by an external force, the rotating member 300 can drive the valve flap 200 to rotate, so that the suction valve can be switched between the suction position and the closed position. Exemplarily, the rotating member 300 is a handle extending from the outside of the suction valve. Through this handle, the user can easily operate the suction valve to switch it to different working states. This design improves the convenience of operation of the suction valve, allowing the user to quickly and accurately switch the state of the valve when performing the suction operation. Especially in situations where frequent suction and closing switching is required, the valve flap 200 can be rotated through simple manual operation, allowing the suction valve to switch freely between different states. In addition, the design of the external handle also provides intuitive operational feedback, allowing the user to clearly perceive the current state of the valve flap 200, further improving the operability and safety of the suction valve.

[0075] According to an optional embodiment, the valve flap 200 is removably mounted within the inner cavity 110, and the valve body 100 is provided with a valve cover. This allows for periodic opening and cleaning, as well as maintenance and replacement of the valve flap 200. The valve cover allows users to periodically open the valve body 100 for internal cleaning, maintenance, and replacement of the valve flap 200, as needed. This removable design improves the maintenance convenience of the suction valve, extends its service life, and helps maintain its performance, especially under frequent use.

[0076] According to an optional embodiment, the inner wall of the first chamber 150 is smooth. This smoothness effectively reduces blind spots, making the interior of the first chamber 150 smoother and easier to clean. During use, the smooth inner wall reduces the adhesion of tissue or liquid within the chamber, making cleaning easier, helping to maintain the sanitary condition of the suction valve and improving its safety.

[0077] For example, the valve body 100 can be made of metal or rigid plastic, and the inner wall of the inner cavity 110 can be coated with a wear-resistant and smooth coating, such as Teflon or other similar materials. This coating not only reduces the adhesion of tissue or liquid to the inner wall, but also enhances the wear resistance of the inner cavity 110, extending the service life of the suction valve. Furthermore, this smooth coating further reduces cleaning difficulty, improves cleaning efficiency, and helps maintain the long-term hygiene and functionality of the valve body 100.

[0078] The second aspect of this embodiment provides a detailed description of the handle.

[0079] Reference Figure 6 、 Figure 7A handle includes the suction valve of the above embodiment. The handle 11 has a receiving cavity, and the suction valve is installed in the receiving cavity. The handle 11 and the remaining internal structure thereof can be the same as those in the prior art and will not be described in detail here. This enables the endoscope 10 to have the beneficial effects of the above-mentioned suction valve, which will not be described in detail here.

[0080] In some embodiments, the handle 11 is provided with a hook 400, and the rotating member 300 is positioned on the hook 400. Specifically, the hook 400 is arranged around the rotating member 300, allowing the rotating member 300 to move within the range enclosed by the hook 400. During operation, the rotating member 300 can rotate freely within the range defined by the hook 400, thereby ensuring that the rotating member 300 remains stable on the handle 11 and reducing the risk of the rotating member 300 accidentally slipping or shifting. This design not only facilitates operation for the operator but also enhances the overall safety and stability of the device.

[0081] The hook 400 allows the operator to easily place and remove the handle 11, improving operational convenience. Furthermore, the location of the rotating member 300 on the hook 400 allows the operator to operate it at any time. This design ensures the stability of the handle 11 during operation, reduces the risk of accidental detachment during use, and improves operational safety and efficiency.

[0082] The third aspect of this embodiment provides a detailed description of the endoscope.

[0083] Reference Figure 6 、 Figure 7 , an endoscope, comprising the handle 11 in the above embodiment. The endoscope 10 of this embodiment has the handle 11 in the above embodiment, and the rotating member 300 is located outside the handle 11 for the operator to operate. In this way, the endoscope 10 has the beneficial effects of the above handle 11, which will not be described in detail here. The endoscope 10 referred to in the embodiment of the present application can be a bronchoscope, pyeloscope, esophagoscope, gastroscope, colonoscope, otoscope, rhinoscope, stomatoscope, laryngoscope, colposcope, laparoscope, arthroscope, etc. The embodiment of the present application does not specifically limit the type of the endoscope 10.

[0084] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A suction valve, applied to an endoscope (10), characterized in that: include: A valve body (100) having an inner cavity (110), wherein a side wall of the valve body (100) is provided with a negative pressure port (120), a sample port (130), and an atmospheric port (140) communicating with the inner cavity (110); as well as a valve flap (200), the valve flap (200) dynamically sealingly cooperating with the inner side wall of the inner cavity (110) to separate the inner cavity (110) into a first cavity (150) and a second cavity (160) that are independent of each other; the valve flap (200) is rotatably disposed in the inner cavity (110) with a first axis as a rotation center to switch the suction valve between a suction position and a closed position; in the diameter direction of the inner cavity (110), both sides of the valve flap (200) dynamically sealingly cooperating with the side wall of the inner cavity (110); Wherein, when the suction valve is in the suction position, the negative pressure port (120) and the sample port (130) are in communication with the first cavity (150), and the atmospheric port (140) is in communication with the second cavity (160); When the suction valve is in the closed position, the negative pressure port (120) and the atmospheric port (140) are in communication with the second cavity (160), and the sample port (130) is in communication with the first cavity (150); A side wall of the valve flap (200) facing the first cavity (150) is a first side surface (210), and the first side surface (210) is an arc-shaped surface; When the suction valve is in the suction position, the inlet direction of the negative pressure port (120) and the inlet direction of the sample port (130) are tangent to the first side surface (210).

2. A suction valve according to claim 1, characterized in that: The contact portion between the valve flap (200) and the side wall of the inner cavity (110) is a sealing portion (220). The valve flap (200) comprises a support body (230) and an elastic body (240) disposed on the support body (230), wherein: The valve flap (200) is provided with the elastic body (240) at least at the sealing portion (220), and the elastic body (240) is in sealing cooperation with the inner wall of the inner cavity (110); And / or, the valve flap (200) is provided with the support body (230) at least at the sealing portion (220), and the elastic body (240) covers at least the support body (230) at the sealing portion (220).

3. A suction valve according to claim 2, characterized in that: The support body (230) is provided with a hollow portion (231), and the hollow portion (231) extends from the first cavity (150) side to the second cavity (160) side. The elastic body (240) covers the hollow portion (231), and when the elastic body (240) of the hollow portion (231) is subjected to force, it can be deformed toward the first cavity (150) or the second cavity (160) side.

4. A suction valve according to claim 1, characterized in that: The side wall of the inner cavity (110) is a surface of revolution centered on the first axis.

5. A suction valve according to claim 4, characterized in that: The negative pressure port (120), the sample port (130), and the atmospheric port (140) are distributed on the valve body (100) in a circumferential direction around the first axis.

6. The suction valve according to claim 1, characterized in that: The suction valve further comprises a rotating member (300), the rotating member (300) being connected to the valve flap (200), and the rotating member (300) can drive the valve flap (200) to rotate under the driving force of an external force, so as to switch the suction valve between a suction position and a closed position; And / or, the valve flap (200) is detachably arranged in the inner cavity (110), and the valve body (100) is provided with a valve cover; And / or, the inner wall of the first cavity (150) is smoothly arranged.

7. A handle, characterized in that: The invention comprises the suction valve according to any one of claims 1 to 6.

8. An endoscope, characterized in that: Including the handle (11) described in claim 7.

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