Negative pressure communication structure, endoscope handle and endoscope

Abstract

The invention discloses a negative pressure communication structure, an endoscope handle and an endoscope in the technical field of medical instruments, the negative pressure communication structure is used for the endoscope, and the endoscope is provided with the endoscope handle. The negative pressure communication structure comprises a hose and a suction valve, the near end of the hose is inwards inserted into the input end of the suction valve, the far end of the hose is used for being communicated with the fluid channel of the insertion part, the near end of the hose extends to the output end of the suction valve or extends out of the output end, and the output end is used for being communicated with a negative pressure source; the suction valve is used for extruding, blocking or releasing a passage in the communicating hose; an atmosphere passage is arranged in the suction valve, the peripheral wall of the hose is matched with at least part of the inner wall of the output end so as to prevent the negative pressure source from being communicated with the atmosphere passage, and when the suction valve extrudes and blocks the hose, the negative pressure source is communicated with the atmosphere passage. According to the scheme, the blocking risk of the negative pressure channel can be reduced by eliminating an incident flow step between the hose and the far end of the suction valve.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a negative pressure communication structure, an endoscope handle and an endoscope. BACKGROUND

[0002] An endoscope is a commonly used medical device, and a sputum suction endoscope is an endoscope that can directly enter the respiratory tract of the human body for examination and suction of sputum.

[0003] In the use process of the sputum suction endoscope, a negative pressure channel is established, one end of the negative pressure channel is connected with an insertion part, the insertion part is inserted into the position in the human body where sputum needs to be suctioned, the other end of the negative pressure channel is connected with a negative pressure source, the negative pressure source establishes a negative pressure environment in the negative pressure channel to perform suction of sputum, and the purpose of suctioning sputum out of the human body is achieved.

[0004] In the process of establishing the negative pressure channel, the opening and closing of the negative pressure channel need to be controlled, and a complete negative pressure channel involves the communication of the distal end of the sputum suction endoscope and the suction valve. Therefore, the prior art usually uses a hose expansion connection method to connect the space between the components. This connection method causes the existence of backflow steps and incoming flow steps in the negative pressure channel. The backflow steps do not affect the flow of sputum, but the incoming flow steps have a risk of sputum blockage, especially when the sputum viscosity is higher, the risk of blockage at the incoming flow steps is higher.

[0005] Therefore, it is a technical problem to be solved by those skilled in the art to provide a negative pressure communication structure that can ensure that there is no incoming flow step in the negative pressure channel when the negative pressure channel is established. SUMMARY

[0006] The present application discloses a negative pressure communication structure, a sputum suction endoscope handle and a sputum suction endoscope to solve the technical problem that the distal end of the hose and the suction valve forms an incoming flow step due to expansion connection in the related art, resulting in a risk of negative pressure channel blockage.

[0007] To solve the above problems, the present application adopts the following technical solutions: In a first aspect, the present application provides a negative pressure communication structure for an endoscope. The negative pressure communication structure includes a hose and a suction valve. The proximal end of the hose is inserted into the input end of the suction valve. The distal end of the hose is used to communicate with the fluid channel of the insertion part. The proximal end of the hose extends to the output end of the suction valve or protrudes out of the output end. The output end is used to communicate with a negative pressure source. The suction valve is used to squeeze and block or release the passage in the hose. An atmospheric passage is provided in the suction valve. The outer peripheral wall of the hose is adapted to at least part of the inner wall of the output end to hinder the communication between the negative pressure source and the atmospheric passage. When the suction valve squeezes and blocks the hose, the negative pressure source communicates with the atmospheric passage.

[0008] In a second aspect, the embodiment of the present application provides an endoscope handle, comprising a handle body, a negative pressure communication structure according to the first aspect of the embodiment of the present application is arranged in the handle body, a connecting end is arranged at the distal end of the handle body, a Y-shaped joint is arranged in the handle body and communicates with the connecting end, and the distal end of the hose communicates with the Y-shaped joint. A negative pressure suction nozzle is arranged at the proximal end of the handle body, and the negative pressure suction nozzle communicates with the output end.

[0009] In a third aspect, the embodiment of the present application provides an endoscope, comprising an insertion part and an endoscope handle according to the second aspect of the embodiment of the present application, and the connecting end communicates with the insertion part. A guide lever is arranged on the handle body, and a traction rope of the guide lever penetrates into the handle body and extends into the insertion part.

[0010] The technical scheme adopted by the present application can achieve the following beneficial effects: The present application adopts the mode that the hose is inserted into the suction valve to eliminate the flow-encountering step in the negative pressure communication structure, so that the risk problem that the fluid is blocked in the negative pressure channel is improved, and the medical waste liquid cannot flow into the suction valve through the extrusion plugging and release communication of the suction valve on the hose, so that the utilization of the fluid flow inertia can be effectively enhanced and the plugging risk of the suction valve can be reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0012] Figure 1 is a structural schematic view of the negative pressure communication structure disclosed by the embodiment of the present application; Figure 2 is a sectional view schematic view of the release communication state of the negative pressure communication structure disclosed by the embodiment of the present application; Figure 3 is a sectional view schematic view of the extrusion plugging state of the negative pressure communication structure disclosed by the embodiment of the present application; Figure 2 is a local enlarged view of part A in the negative pressure communication structure disclosed by the embodiment of the present application; Figure 4 is a sectional view schematic view of the release communication state of the negative pressure communication structure disclosed by the embodiment of the present application; Figure 5 is a local enlarged view of part B in the negative pressure communication structure disclosed by the embodiment of the present application; Figure 4 Figure 6 ​is a structural schematic view of another embodiment of the negative pressure communication structure disclosed in the embodiments of the present application; Figure 7 is a sectional view of another embodiment of the negative pressure communication structure disclosed in the embodiments of the present application; Figure 8 is a structural schematic view of another embodiment of the negative pressure communication structure disclosed in the embodiments of the present application; Figure 7 is a local enlarged view of part C in the foregoing figure; Figure 9 is a structural schematic view of an endoscope handle disclosed in the embodiments of the present application; Figure 10 is a sectional view of an endoscope handle disclosed in the embodiments of the present application; Figure 11 is a structural schematic view of an endoscope disclosed in the embodiments of the present application.

[0013] In the figure: 1, hose; 2, spring tube; 3, buckle; 4, suction valve; 41, limiting end; 42, reset spring; 43, valve body; 44, plug rod; 45, input end; 46, pressing end; 47, hole; 48, output end; 5, negative pressure suction nozzle; 6, pressing piece; 7, cutting slot; 8, connecting part; 9, connecting end; 10, Y-shaped joint; 11, handle body; 12, guide lever; 13, insertion part. DETAILED DESCRIPTION

[0014] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0015] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and are not limited in number, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.

[0016] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative positions of the components to the user in the use environment, wherein the end closer to the user is designated as "proximal end", and the end farther from the user is designated as "distal end".

[0017] At present, in the process of constructing the negative pressure channel of the endoscope, it is necessary to connect the insertion part 13, the negative pressure source and other functional components involved. Generally, these functional components are produced separately and then assembled uniformly, so various connectors are arranged on each functional component to facilitate connection and communication. The prior art adopts the method of expanding the hose 1 and each connector to construct the negative pressure channel. This method is simple to install and easy to control the cost, but backflow steps and incoming flow steps will appear in the constructed negative pressure channel. The formation of the incoming flow step is due to the fact that, in the process of connecting the hose 1 with the input end 45 of the suction valve 4, the hose 1 is connected with the input end 45 of the suction valve 4 in the expanding mode to ensure the stability of the connection. In the expanding process, the end face of the input end 45 in the channel of the hose 1 will cause the flow path to be reduced and form a step surface, and the step surface at this position is the incoming flow step. Since the flow direction in the negative pressure channel is fixed when the negative pressure source is opened, the flow area at the backflow step is expanded, which does not affect the flow. However, the flow area at the position of the incoming flow step is reduced, and the fluid will be blocked at the incoming flow step. Since the suction involved in the endoscope is generally the liquid in the human body, such as sputum, blood, tissue fluid, hydrops and other medical waste liquid, these medical waste liquids generally have the property of thickening. Especially in the case of pathological problems, there may be a sticky texture, so when the suction fluid flows through the incoming flow step, there is a risk of blockage, and the higher the viscosity of the fluid, the higher the risk of blockage.

[0018] The negative pressure communication structure provided by the present application will be described in detail below in combination with the accompanying drawings Figures 1 to 8 and specific embodiments and application scenarios.

[0019] The negative pressure communication structure provided by the present application is used for an endoscope. Please refer to Figures 1 to 5 , the negative pressure communication structure comprises a hose 1 and a suction valve 4, and the proximal end of the hose 1 is inserted into the input end 45 of the suction valve 4, please refer to Figure 11The distal end of the flexible tube 1 is used to communicate with the fluid channel of the insertion part 13. The negative pressure communication structure is used to connect the fluid channel of the insertion part 13 and the negative pressure source, so that the negative pressure can act on the fluid channel of the insertion part 13. When the insertion part 13 is inserted into the human body, the medical waste fluid in the human body can be suctioned out by the negative pressure, thereby achieving the purpose of treatment. During the use of the endoscope, the negative pressure channel does not need to be in the suction state at all times, so it is necessary to be able to control the suction state of the negative pressure channel. Since the negative pressure source takes time to start and stop, the suction state cannot be controlled by starting and stopping the negative pressure source in this embodiment. Therefore, this embodiment controls the suction state by setting a suction valve 4. The flexible tube 1 is inserted into the suction valve 4 by inserting it inward, which can avoid the presence of a flow-facing step at the docking position of the flexible tube 1 and the suction valve 4. After eliminating the influence of the flow-facing step, the risk of blockage in the negative pressure channel will be significantly reduced.

[0020] Based on this, the proximal end of the hose 1 extends to or extends beyond the output end 48 of the suction valve 4, and the output end 48 is used to communicate with a negative pressure source. The extension of the proximal end of the hose 1 into the output end 48 of the suction valve 4 allows medical waste liquid to be directly transported to the output end 48 of the suction valve 4 using the hose 1. Since the medical waste liquid is under negative pressure after entering the hose 1, it will have flow inertia when flowing within the hose 1. If the medical waste liquid is introduced into the suction valve 4 and then discharged, it not only wastes the already formed flow inertia but also increases the risk of excessive leakage and blockage within the suction valve 4. This embodiment of the application can complete the construction of a negative pressure channel without allowing a large amount of medical waste liquid to enter the suction valve 4. Therefore, this embodiment of the application, through the structural design of inserting the hose 1 into the input end 45 of the suction valve 4 and extending it to the output end 48, avoids the occurrence of a flow-facing step and reduces the risk of excessive leakage and blockage within the suction valve 4.

[0021] Since the suction valve 4 needs to control the specific state of the suction operation within the negative pressure passage, the overall connection state of the negative pressure passage can be controlled by squeezing and blocking or releasing the passage within the hose 1 through the suction valve 4: when the suction valve 4 squeezes and blocks the passage within the hose 1, the suction operation stops; when the suction valve 4 releases the passage within the hose 1, the suction operation begins.

[0022] To prevent damage to the negative pressure source, when the suction operation stops but the negative pressure source remains on, it is necessary to connect the negative pressure source to the atmosphere to avoid damage caused by pressure imbalance within the negative pressure source. Considering this, the embodiment of this application provides an atmospheric passage within the suction valve 4. However, the atmospheric passage should not affect the suction process of the negative pressure channel. Therefore, when the hose 1 is in its normal state, the outer peripheral wall of the hose 1 is adapted to at least a portion of the inner wall of the output end 48 to obstruct the connection between the negative pressure source and the atmospheric passage. When the suction valve 4 squeezes and blocks the hose 1, the hose 1 will contract under the squeezing action of the suction valve 4, creating a gap between the outer peripheral wall of the hose 1 and the adapted position of the output end 48. This gap effectively completes the connection between the negative pressure source and the atmospheric passage.

[0023] When the suction valve 4 releases the connection to the passage inside the hose 1, the outer peripheral wall of the hose 1 seals off the space inside the output end 48 that could connect to the atmospheric passage by adapting to the inner wall of the output end 48. Therefore, the negative pressure source can only act on the hose 1, forming a smooth suction within the negative pressure channel. When the suction valve 4 squeezes and blocks the passage inside the hose 1, the passage inside the hose 1 is disconnected, and the suction operation of the negative pressure channel is interrupted. The hose 1 deforms during the squeezing process. The deformation of the hose 1 prevents the outer peripheral wall of the hose 1 from effectively fitting the inner wall of the output end 48, thus creating a gap space between the inner wall of the output end 48 and the outer peripheral wall of the hose 1. The negative pressure suction effect of the negative pressure source acts on this gap space, which is connected to the atmospheric passage. Therefore, the negative pressure source is connected to the atmospheric passage at this moment, thereby protecting the negative pressure source.

[0024] When the suction valve 4 releases the connection after squeezing and blocking the passage in the hose 1, the outer peripheral wall of the hose 1 can be restored to match the inner wall of the output end 48 of the suction valve 4, thereby restoring the suction operation of the negative pressure channel.

[0025] In this embodiment of the application, a slit 7 is provided on the hose 1, and the slit 7 penetrates the wall of the hose 1; The slit 7 is located within the output end 48.

[0026] If this embodiment of the application only utilizes the deformation of the hose 1 to control the connection or disconnection of the negative pressure source and the atmospheric passage, since the deformation shape of the hose 1 is uncontrollable, there is a small probability that the atmospheric passage and the negative pressure source cannot be connected when needed. In order to minimize the risk during medical procedures, this embodiment of the application provides a slit 7 on the hose 1 and places the slit 7 inside the output end 48. The slit 7 is located at the output end 48, so the position of the slit 7 will not affect the suction valve 4's ability to squeeze and block the hose 1. Furthermore, when the hose 1 deforms, the slit 7 will also deform and open due to the deformation. At this time, even if there is no gap between the outer peripheral wall of the hose 1 and the inner wall of the output end 48 due to the deformation, the opening of the slit 7 can still connect the atmospheric passage and the negative pressure source. When the suction valve 4 releases the connection to the hose 1, the hose 1, due to its flexible material properties, will squeeze and close the slit 7 during the process of restoring its deformation, thereby resuming the suction operation of the negative pressure channel.

[0027] In the actual application of this embodiment, even if the slit 7 does not completely close during the recovery deformation process, the slit 7 will shrink and narrow according to the characteristics of the tubing 1 itself. At this time, the passage inside the tubing 1 is already open, so the negative pressure source can also effectively act on the negative pressure channel to complete the suction work. Generally, there will be no leakage at the slit 7. Even if there is leakage, due to the size limitation of the slit 7, only a small amount of medical waste liquid will leak. The amount of leakage will not affect the normal operation of the endoscope suction work at all, and it is in line with the operational tolerance of this type of instrument.

[0028] In the application of this embodiment, the slit 7 can extend axially along the hose 1 or circumferentially along the hose 1. When the slit 7 extends axially along the hose 1, it can only be opened in an alternating manner under the pressure of the suction valve 4. The degree to which the slit 7 is opened in this way is limited, and the flow rate of the atmospheric passage and the negative pressure source is small. At this time, the negative pressure source is still at risk of damage. When the slit 7 extends circumferentially along the hose 1, it can be fully opened when compressed and deformed, thereby opening the slit 7 to a greater extent and increasing the flow rate of the atmospheric passage and the negative pressure source. This effectively supports the suction effect of the negative pressure source and protects the negative pressure source. In this embodiment, the slit 7 is specifically designed to extend circumferentially along the wall of the hose 1. This allows the suction valve 4 to effectively compress the slit 7 through the deformation of the hose 1 when it squeezes the hose 1, causing the slit 7 to form a tear-like opening on the hose 1. This tear-like opening is then used to connect with the negative pressure source, achieving both connection and blockage of the negative pressure channel while protecting the negative pressure source.

[0029] In the embodiment of the present application, when the suction valve 4 extrudes and blocks the hose 1, the slit 7 is opened along the axis direction of the hose 1, and when the suction valve 4 releases the communication of the hose 1, the slit 7 is closed. On the basis of the arrangement of the circumferentially extending slit 7, when the suction valve 4 extrudes and blocks the hose 1, the slit 7 can be opened along the axis direction of the hose 1 by the shrinkage deformation of the hose 1 in the axis direction under the extrusion force, so that the opening angle of the tear-shaped opening is increased along the axis direction of the hose 1, and at the same time, the proximal end of the hose 1 can be kept in the fitted state with the output end 48, and the slit 7 can achieve the purpose of communicating the atmospheric passage and the negative pressure source. After the slit 7 is arranged, the risk that the hose 1 cannot communicate with the atmospheric passage and the negative pressure source during the deformation process can be effectively avoided, and the risk that the outer peripheral wall of the hose 1 and the inner wall of the output end 48 cannot be completely restored to the fitted state due to incomplete recovery of the deformation when the hose 1 is restored to the deformation, so that the atmospheric passage cannot be effectively disconnected from the communication state with the negative pressure source.

[0030] In the embodiment of the present application, one side of the hose 1 extruded by the suction valve 4 is the extrusion side, when the hose 1 is extruded, the deformation amount of the extrusion side is larger because the extrusion side is directly extruded, and the deformation amounts of other directions avoiding the extrusion side are all smaller than that of the extrusion side. If the slit 7 is arranged at other positions avoiding the extrusion side, when the hose 1 is extruded, deformation will still occur, but the opening degree of the slit 7 will be reduced due to the smaller deformation amount. In the embodiment of the present application, the slit 7 is arranged at the extrusion side of the hose 1, the deformation amount of the hose 1 is used to the maximum extent, so that the slit 7 can keep a larger opening degree when being opened to communicate the atmospheric passage and the negative pressure source, thereby ensuring that the communication state and the fluid flux of the atmospheric passage and the negative pressure source are stable enough.

[0031] Referring to Figure 6 and Figure 7 In another embodiment of the present application, the proximal end of the output end 48 is provided with a connecting portion 8 for connecting with the negative pressure suction nozzle 5, and the proximal end of the hose 1 extends to the connecting portion 8 to cooperate with the connecting portion 8 to achieve the expansion connection between the connecting portion 8 and the negative pressure suction nozzle 5. On the basis of the slit 7, the stable connection between the proximal end of the hose 1 and the output end 48 can ensure that the negative pressure passage is in a stable suction state when being communicated, so that the use of the slit 7 can effectively avoid the unstable communication. The stable connection of the slit 7 at the proximal end of the hose 1 needs to be achieved by the expansion connection between the connecting portion 8 and the negative pressure suction nozzle 5.

[0032] Further referring toFigure 8 Therefore, in the embodiment of the present application, the hose 1, the connecting portion 8 and the negative pressure suction nozzle 5 are connected by expansion, and the negative pressure suction nozzle 5 is communicated with the negative pressure source, so the connecting portion 8 acts as an intermediate connecting piece, and can limit the position of the proximal end of the hose 1 by expansion of the connecting portion 8 and the negative pressure suction nozzle 5 on the basis of effective communication of the negative pressure source and the hose 1, so that the end of the hose 1 can be pulled when the hose 1 is pressed, so that the slit 7 can be more widely opened on one side, and because the proximal end of the slit 7 does not move under the restriction of expansion, the trajectory of the opening and closing of the slit 7 can be more controllable.

[0033] In the embodiment of the present application, a reset member is provided on the hose 1, which is used to elastically limit the relative position of the hose 1 and the input end 45, one end of the reset member is fixed with the input end 45, and the other end is fixed with the reset member. The reset member has elastic limiting capability, and through the connection of the reset member, the hose 1 can have elastic stretching and contracting capability in the axial direction of the hose 1 based on the input end 45, and when the hose 1 is pressed, because the distal end of the hose 1 is limited by the elastic force of the reset member, the deformation of the hose 1 will be more concentrated on the proximal end of the hose 1, so that whether the hose 1 is pressed to form a gap space or the slit 7 is pulled, the fluid flux when the atmosphere passage and the negative pressure source are communicated can be increased. When the suction valve 4 releases the hose 1, the reset member can also help the hose 1 to restore the original shape and position by the action of its elastic force, so that the hose 1 can restore the communication of the negative pressure passage.

[0034] In the embodiment of the present application, the reset member can be a spring, an elastic band or a spring tube 2, wherein the elastic band can provide linear elastic force, and the spring and the spring tube 2 can provide circumferential elastic force. In order to ensure that the elastic force acts more uniformly, the spring or the spring tube 2 is preferably used as the reset member, and the spring and the spring tube 2 are both sleeved on the hose 1 and have multiple connection points in the circumferential direction of the hose 1, so that the relative position adjustment of the hose 1 and the input end 45 can provide circumferentially distributed force, but the spring is softer than the spring tube 2, so it cannot limit the stretching and contracting path of the sleeved part of the hose 1, which will cause the deformation state of the hose 1 to be more random when the hose 1 is pressed, and the use of the spring tube 2 can effectively limit the stretching and contracting path of the hose 1, so that the hose 1 can better utilize the elastic force of the reset member.

[0035] When the slits 7 are not present in the embodiment of the present application, the reset member can effectively help the hose 1 to restore the original position and original shape, thereby avoiding the problem that the outer peripheral wall of the hose 1 cannot form a fit with the inner wall of the output shaft after the deformation is restored; when the slits 7 are present in the embodiment of the present application, the reset member can help the slits 7 to limit the track of opening and closing, and can effectively avoid the problem that the opening degree of the slits 7 is limited due to the excessive deformation of the distal end side of the hose 1.

[0036] In the embodiment of the present application, the suction valve 4 comprises a valve body 43, and the input end 45 and the output end 48 are located on the side surface of the valve body 43. By arranging the input end 45 and the output end 48 on the side surface of the valve body 43, the hose 1 can effectively pass through the valve body 43 and will not cause the pipeline to be folded when passing through the valve body 43, thereby achieving the purpose of promoting the smoothness of the internal passage of the hose 1.

[0037] The valve body 43 is provided with a plug rod 44, which is movably arranged along the axis direction of the valve body 43. The plug rod 44 is provided with a pressing portion, which is used to move with the plug rod 44 and press the hose 1. The plug rod 44 can move in the valve body 43, and the plug rod 44 can drive the pressing portion to move synchronously when moving along the axis direction of the valve body 43. The pressing portion can block the internal passage of the hose 1 by pressing the hose 1 during the movement. The movement of the plug rod 44 is reciprocable, so that the hose 1 can be released by moving reversely along the original path, thereby achieving the purpose of connecting the internal passage of the hose 1.

[0038] In the embodiment of the present application, the pressing plate, the pressing ring or the hole 47 that can accommodate the hose 1 to pass through can be selected to be mounted on the plug rod 44 to press the hose 1. In order to save space, the hole 47 is selected to be arranged on the plug rod 44 to limit the hose 1 in the embodiment of the present application. When the plug rod 44 moves in the valve body 43, the hole 47 can form a one-sided pressing on the hose 1, thereby flattening the hose 1 in the valve body 43, and achieving the purpose of blocking the internal passage of the hose 1.

[0039] In the embodiment of the present application, one end of the valve body 43 is provided with a limiting end 41, and a reset spring 42 is arranged between the limiting end 41 and the plug rod 44, and the two ends of the reset spring 42 are respectively in abutment with the limiting end 41 and the plug rod 44. The limiting end 41 blocks the end position of the valve body 43 and provides a force point for the reset spring 42. When the plug rod 44 moves in the valve body 43, the reset spring 42 can push the plug rod 44 away from the limiting end 41 by using the limiting end 41 as a force support point. Therefore, when the plug rod 44 is pushed close to the limiting end 41, the extrusion part on the plug rod 44 extrudes and deforms the hose 1. At this time, the force applied to the plug rod 44 needs to resist the elastic force of the reset spring 42. When the external force applied to the plug rod 44 is removed, the reset spring 42 pushes the plug rod 44 away from the limiting end 41 to release the hose 1. The reset spring 42, the limiting end 41 and the plug rod 44 are all in abutment, so the reset spring 42 only has the function of pushing the plug rod 44 to move, and does not affect the specific trajectory of the plug rod 44. Therefore, the plug rod 44 will not be stuck with the valve body 43 during movement.

[0040] In the embodiment of the present application, the other end of the valve body 43 is provided with a pressing end 46, and the pressing end 46 is fixed with the plug rod 44. The pressing end 46 controls the pushing work of the plug rod 44, so as to facilitate pushing the plug rod 44 to the direction of the limiting end 41. The pressing end 46 can also improve the operation experience in the pressing process by arranging a pressing piece 6, so as to avoid the safety risk of hand off when pressing the pressing end 46 to control the suction valve 4 to extrude and block the hose 1.

[0041] The application will be described in detail below with reference to the accompanying drawings and specific embodiments and application scenarios. Figures 9 to 10 The application will be described in detail below with reference to the accompanying drawings and specific embodiments and application scenarios.

[0042] The embodiment of the present application provides an endoscope handle, which comprises a handle body 11, a negative pressure communication structure in the first aspect of the embodiment of the present application is arranged in the handle body 11, a connecting end 9 is arranged at the distal end of the handle body 11, a Y-shaped joint 10 is arranged in the handle body 11 and communicated with the connecting end 9, and the distal end of a hose 1 is communicated with the Y-shaped joint 10; the Y-shaped joint 10 is used for providing a plurality of insertion instrument passage structures for the endoscope handle in the embodiment of the present application, one end of the Y-shaped joint 10 is connected with a fluid channel of an insertion part 13, a negative pressure passage is communicated with the fluid channel of the insertion part 13 through the other end of the Y-shaped joint 10, and the remaining end of the Y-shaped joint 10 extends out of the handle body 11 from another direction and can be inserted into other medical instruments, so that the negative pressure passage is used for completing the examination or treatment of the internal environment of the human body, for example, when the endoscope is used as a sputum suction mirror, the endoscope handle needs to be connected with the negative pressure passage and simultaneously inserted into a camera module and a light source assembly to perform internal environment examination, so that the specific conditions in the respiratory tract can be more accurately observed and the sputum can be accurately sucked clean, at this time, the hose 1 is connected with the Y-shaped joint 10, so that the fluid channel of the insertion part 13 and a negative pressure source are communicated through the negative pressure communication structure, and the camera module and the light source assembly are inserted through the Y-shaped joint 10 to obtain image information, and the sputum is accurately sucked according to the content of the image information.

[0043] In the embodiment of the present application, a negative pressure suction nozzle 5 is arranged at the proximal end of the handle body 11, and the negative pressure suction nozzle 5 is communicated with the output end 48. The negative pressure suction nozzle 5 serves as an intermediate connecting piece between the negative pressure source and the output end 48, so that the communication state of the negative pressure communication structure and the negative pressure source is more stable.

[0044] The endoscope provided by the present application is described in detail below by combining the accompanying drawings and specific embodiments and application scenarios. Figure 11

[0045] The embodiment of the present application provides an endoscope, which comprises an insertion part 13 and an endoscope handle in the second aspect of the embodiment of the present application, and the connecting end 9 is communicated with the insertion part 13. A guide lever 12 is arranged on the handle body 11, a traction rope of the guide lever 12 penetrates into the handle body 11 and extends into the insertion part 13.

[0046] In the embodiment of the present application, the guide lever 12 is used for pulling the traction rope to control the bending guide of the insertion part 13, so that the orientation of the end of the insertion part 13 is changed, and the connecting end 9 is used for maintaining the stability of the connection between the insertion part 13 and the endoscope handle. In the embodiment of the present application, the path of the traction rope is limited by arranging the buckle 3 on the suction valve 4, so that the traction trajectory of the traction rope is limited, and the bending trajectory of the end of the insertion part 13 can be more accurate.​

[0047] The endoscope provided by the embodiments of the present application can be a sputum suction endoscope, and can also be a bronchoscope, a nephroscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasoscope, an oral cavity scope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not specifically limit the type of the endoscope. The endoscope can effectively avoid the blockage of the negative pressure passage in the process of normal suction operation by applying the endoscope handle. For example, when the endoscope is used as a sputum suction endoscope, sputum can effectively pass through the negative pressure communication structure in the endoscope handle and will not be blocked by the upflow step to form blockage. Moreover, when the communication state and the blocking state of the negative pressure communication structure are controlled, the flexibility and stability of the switching between the communication state and the blocking state can be ensured, and the observation of the camera module and the light source assembly is further matched, so that sputum can be smoothly and efficiently suctioned out of the human body. For example, when the endoscope is used as a bronchoscope, a nephroscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasoscope, an oral cavity scope, a laryngoscope, a colposcope, a laparoscope, an arthroscope, etc., the suction process of medical waste liquid can also be correspondingly avoided from being blocked due to the existence of the upflow step.

[0048] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0049] In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0050] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A negative pressure communication structure for an endoscope, characterized by, The negative pressure communication structure comprises a hose and a suction valve, a proximal end of the hose is inserted into an input end of the suction valve, a distal end of the hose is used for communicating with a fluid channel of an insertion part, the proximal end of the hose extends to or beyond an output end of the suction valve, and the output end is used for communicating with a negative pressure source. The suction valve is used for squeezing and blocking or releasing a passage in the hose. An atmospheric passage is arranged in the suction valve, and a peripheral wall of the hose is matched with at least part of an inner wall of the output end to hinder the communication between the negative pressure source and the atmospheric passage.

2. The negative pressure communication structure according to claim 1, wherein A slit is arranged on the hose, and the slit penetrates a tube wall of the hose. The slit is located in the output end.

3. The negative pressure communication structure according to claim 2, wherein The slit extends in a circumferential direction of the tube wall of the hose, and the slit is opened along an axial direction of the hose when the suction valve squeezes and blocks the hose, and the slit is closed when the suction valve releases the communication of the hose.

4. The negative pressure communication structure according to claim 3, wherein A side of the hose squeezed by the suction valve is a squeezing side, and the slit is located on the squeezing side of the hose.

5. The negative pressure communication structure according to claim 2, wherein A proximal end of the output end is provided with a connecting part used for connecting with a negative pressure suction nozzle, and the proximal end of the hose extends to the connecting part to realize the expansion connection between the connecting part and the negative pressure suction nozzle.

6. The negative pressure communication structure according to any one of claims 1 to 5, characterized by A reset member is arranged on the hose, and the reset member is used for elastically limiting the relative position of the hose and the input end, one end of the reset member is fixed with the input end, and the other end of the reset member is fixed with the reset member.

7. The negative pressure communication structure according to any one of claims 1 to 5, characterized by The suction valve comprises a valve body, and the input end and the output end are located on a side of the valve body. A plug rod is arranged in the valve body, the plug rod is movably arranged along an axial direction of the valve body, an extrusion part is arranged on the plug rod, and the extrusion part is used for moving with the plug rod and extruding the hose.

8. The negative pressure communication structure according to claim 7, wherein One end of the valve body is provided with a limiting end head, a reset spring is arranged between the limiting end head and the plug rod, and two ends of the reset spring are respectively abutted with the limiting end head and the plug rod. The other end of the valve body is provided with a pressing end head, and the pressing end head is fixed with the plug rod.

9. An endoscope handle, characterized by The handle body is provided with a connecting end at a distal end, a Y-shaped joint is arranged in the handle body and communicates with the connecting end, and a distal end of the hose communicates with the Y-shaped joint. A negative pressure suction nozzle is arranged at a proximal end of the handle body, and the negative pressure suction nozzle communicates with the output end.

10. An endoscope characterized by comprising: The handle body is provided with a guide lever, and a traction rope of the guide lever penetrates into the handle body and extends into the insertion part. The handle body is provided with a guide lever, and a traction rope of the guide lever penetrates into the handle body and extends into the insertion part.

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