Suction structure of endoscope

Abstract

The utility model discloses an endoscope suction structure which comprises an elastic piece, a multi-way valve and a pressing valve, the multi-way valve comprises a main channel, a three-way pipe and a suction valve, one end of the flexible three-way pipe is communicated with the main channel, and the suction valve is arranged on the three-way pipe and communicated with the three-way pipe; the extending directions of the upper pressing block and the lower pressing block on the shifting rod are opposite, the upper pressing block and the lower pressing block are located on the two sides of the three-way pipe respectively, and the suction valve is located between the upper pressing block and the lower pressing block. The suction valve is controlled to be communicated with the main channel or the atmosphere through the pressing valve, connection and disconnection of negative pressure suction are achieved, and control is fast and rapid. Moreover, parts between the suction valve and the main channel are reduced, the loss of suction pressure is reduced, the intensity of negative pressure suction is ensured, the suction flow is increased, and the suction efficiency can be improved. Moreover, connecting parts among the main channel, the three-way pipe and the suction valve are few, so that the difficulty of disinfection and cleaning is reduced, and the safety of the negative pressure structure is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical device equipment, in particular to an endoscope suction structure. Background Art

[0002] An endoscope is an instrument that enters the body through a natural body passage for detection or treatment. The endoscope can enter the human body through natural body openings such as the oral cavity or surgical incisions, allowing medical practitioners to examine and observe the internal conditions of the human body, facilitating the diagnosis and treatment of diseases. Some endoscopes need to cooperate with corresponding suction valve components to aspirate body fluids or foreign objects to eliminate the interference of accumulated fluid during the inspection and treatment process, ensure the doctor's observation field of view, or collect body fluids for subsequent laboratory diagnosis. Usually, a negative pressure suction valve is arranged inside the handle. At present, the structure of the endoscope suction valve is complex, the effective liquid flow space inside the suction valve is small, the suction flow is small, foreign objects are easily stuck, and the situation of low efficiency of aspirating accumulated fluid and blockage of the suction valve is likely to occur. Moreover, there are many internal channels in the suction valve, which are not easy to disinfect and clean, reducing the safety performance. Summary of the Utility Model

[0003] In order to overcome at least one of the above technical problems in the prior art, the utility model provides an endoscope suction structure with a simple structure, convenient operation, and high suction efficiency.

[0004] An endoscope suction structure is provided, which includes an elastic member, a multi-way valve, and a pressing valve. The multi-way valve includes a main channel, a three-way pipe, and a suction valve. The two ends of the main channel are respectively a liquid inlet and an instrument port. One end of the flexible three-way pipe is communicated with the main channel, and the suction valve is arranged on the three-way pipe and communicated with the three-way pipe. The pressing valve includes a lever, a button arranged on one side of the lever, an upper pressing block and a lower pressing block arranged on the other side of the lever. The extending directions of the upper pressing block and the lower pressing block are opposite, the upper pressing block and the lower pressing block are respectively located on both sides of the three-way pipe, and the suction valve is located between the upper pressing block and the lower pressing block. Pressing the button drives the upper pressing block or the lower pressing block to block the communication between the suction valve and the atmosphere end of the three-way pipe, and releasing the button drives the other pressing block to block the communication between the suction valve and the main channel. The elastic member is arranged between the multi-way valve and the pressing valve to drive the pressing valve away from the three-way pipe.

[0005] The pressing valve is used to control the communication and disconnection between the suction valve and the main channel or the atmosphere, realizing the quick and rapid control of negative pressure suction. Moreover, the suction valve and the main channel are communicated by a flexible three-way pipe, reducing the components between the suction valve and the main channel, reducing the loss of suction pressure, ensuring the intensity of negative pressure suction, increasing the suction flow, and improving the suction efficiency. Moreover, the reduction of the connecting components between the main channel, the three-way pipe and the suction valve also reduces the difficulty of disinfection and cleaning, improving the safety of the negative pressure structure.

[0006] In some embodiments of the above endoscopic suction structure, the elastic member is disposed between the lever and the three-way pipe and is located on the lever or the three-way pipe. The elastic member can lift the lever when the button is not stressed, maintaining the disconnection between the main channel and the suction valve, avoiding the accidental opening of the negative pressure suction, and achieving the effect of safety protection.

[0007] In some embodiments of the above endoscopic suction structure, the upper end of the lever is hinged to the main channel, and an elastic member is disposed at the hinge. Pressing the lever to control the negative pressure suction conforms to the user's usage habit and improves the operation experience of the endoscope.

[0008] In some embodiments of the above endoscopic suction structure, an upper baffle and a lower baffle are disposed on the main channel. The upper baffle and the upper pressing block are respectively located on both sides of the three-way pipe, and the lower baffle and the lower pressing block are respectively located on both sides of the three-way pipe. The baffle can give a reverse supporting force to the pressing block, making the pressure applied by the pressing block to the three-way pipe more effective, improving the blocking effect of the channel, and making the operation more labor-saving and convenient.

[0009] In some embodiments of the above endoscopic suction structure, anti-slip patterns are provided on the button. It can increase the friction, prevent hand slipping during use, and improve the usability of the operation.

[0010] In some embodiments of the above endoscopic suction structure, the instrument port and the liquid inlet are located on the same axis. When the medical device enters the endoscope from the instrument port, the entry channel of the instrument is a straight channel, avoiding damage to the instrument caused by bending of the instrument in the handle, or air leakage and liquid leakage caused by the instrument piercing the working channel, and improving the efficiency of the instrument entry.

[0011] In some embodiments of the above endoscopic suction structure, a biopsy valve is provided on the instrument port of the multi-way valve. The multi-way valve integrates multiple functions, simplifies the structure inside the handle, and makes the production and assembly of the handle more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present invention, not all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts:

[0013] Figure 1 is a schematic structural diagram of the negative pressure suction structure of the present invention;

[0014] Figure 2 is a schematic structural diagram of the multi-way valve of the present invention;

[0015] Figure 3This is a schematic structural diagram of the pressing valve of the present utility model. Detailed implementation manners

[0016] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] It should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0018] In order to solve the problems of the original suction valve having numerous parts and weak suction force and being prone to blockage, referring to Figures 1 to 3 , an endoscopic suction structure is disclosed. The negative pressure suction structure includes an elastic member 300, a multi-way valve 100, and a pressing valve 200. The multi-way valve 100 includes a main channel 110, a three-way pipe 120, and a suction valve 130. The two ends of the main channel 110 are respectively a liquid inlet 111 and an instrument port 112. One end of the flexible three-way pipe 120 is communicated with the main channel 110, and the suction valve 130 is arranged on the three-way pipe 120 and communicated with the three-way pipe 120.

[0019] The pressing valve 200 includes a lever 210, a button 220 arranged on one side of the lever 210, an upper pressing block 231 and a lower pressing block 232 arranged on the other side of the lever 210. The extending directions of the upper pressing block 231 and the lower pressing block 232 are opposite. The upper pressing block 231 and the lower pressing block 232 are respectively located on both sides of the three-way pipe 120. The upper pressing block 231 and the lower pressing block 232 apply pressure to the three-way pipe 120 from two different directions. The suction valve 130 is located between the upper pressing block 231 and the lower pressing block 232. Pressing the button 220 drives the upper pressing block 231 or the lower pressing block 232 to block the communication between the suction valve 130 and the atmosphere end of the three-way pipe 120. Releasing the button 220 drives the other pressing block to block the communication between the suction valve 130 and the main channel 110.

[0020] Further, in order to reduce the operation of the negative pressure mechanism, an elastic member 300 is provided between the lever 210 and the three-way pipe 120, and the elastic member 300 drives the pressing valve 200 away from the three-way pipe 120. When no external force is applied, the elastic member pushes the lever 210 backward, so that the upper pressing block 231 presses between the suction valve 130 and the main channel 110, closing the negative pressure channel between the liquid inlet 111 and the suction valve 130, keeping the suction channel in a disconnected state, preventing accidental connection of negative pressure suction, avoiding the occurrence of medical accidents, and ensuring the safety during the use of the endoscope. Moreover, the action of pulling up the button 220 is reduced, the operation steps are decreased, and it is more convenient to use.

[0021] In order to enable the lever 210 to be fully bounced up when not pressed and the isolation between the suction valve 130 and the main channel 110 to be more complete, the length of the elastic member 300 when not compressed is longer than the length of the upper pressing block 231 or the lower pressing block 232 located between the lever 210 and the three-way pipe 120. In this way, the pressing block isolating the opening end of the three-way pipe 120 and the suction valve 130 will not work, while the pressing block isolating the three-way pipe 120 and the main channel 110 can be driven by the elastic force to press against the three-way pipe 120, resulting in a better isolation effect.

[0022] Additionally, anti-slip patterns can be provided on the button 220 to increase friction, prevent slippery hands during use and make it not easy to operate, and improve the operation feel.

[0023] Refer to the Figures 1 to 3 In the embodiment in the attachment, the upper end of the three-way pipe 120 is open, the lower end is connected to the main channel 110, and a suction valve 130 is connected in the middle. The upper pressing block 231 of the lever 210 extends from left to right, the lower end of the lever 210 is a curved arc shape, the lower pressing block 232 is arranged at the end of the lever 210 and is formed by bending the end of the lever 210, and the lower pressing block 232 extends from right to left. After the pressing valve 200 and the multi-way valve 100 are assembled, the lever 210 is beside the three-way pipe 120, the upper pressing block 231 is on the left side of the three-way pipe 120, and the lower pressing block 232 is on the right side of the three-way pipe 120. A wavy elastic member is also provided on the right side of the lever 210, and the other end of the elastic member presses against the three-way pipe 120.

[0024] When the button 220 is not pressed, the lever 210 is bounced to the left by the elastic member 300, so that the upper pressing block 231 and the lower pressing block 232 are driven to move to the left. The lower pressing block 232 cuts off the channel between the main channel 110 below the suction valve 130 and the suction valve 130, blocking the negative pressure suction channel. And the channel between the suction valve 130 and the upper end opening of the three-way pipe 120 is still connected, so the suction valve 130 is in communication with the atmosphere.

[0025] When the button 220 is pressed downward, the elastic member 300 is compressed, the lever 210 moves to the right, both the upper pressing block 231 and the lower pressing block 232 are driven to move to the right, and the upper pressing block 231 cuts off the channel between the open end of the three-way pipe 120 on the upper side of the suction valve and the suction valve 130, so that the negative pressure suction channel between the suction valve 130 and the main channel 110 is opened, and the external suction source can suck gas and liquid through the working channel.

[0026] The pressing valve 200 is used to control the connection between the suction valve 130 and the main channel 110 or the atmosphere, realizing the connection and disconnection of the negative pressure suction quickly and rapidly. Moreover, the suction valve 130 and the main channel 110 are connected by a flexible three-way pipe 120. The structure of the three-way pipe 120 is simple, reducing the components between the suction valve 130 and the main channel 110, reducing the loss of suction pressure, ensuring the intensity of the negative pressure suction, increasing the suction flow rate, and improving the suction efficiency. And the fewer connecting components between the main channel 110, the three-way pipe 120 and the suction valve 130 also reduce the difficulty of disinfection and cleaning, and improve the safety of the negative pressure structure.

[0027] In order to improve the sealing effect of the three-way pipe 120 blocked by the pressing block and restore its original state after the pressing block moves away to ensure the suction effect, the three-way pipe 120 is made of an elastic flexible material, such as elastic materials like styrene-butadiene rubber, cis-butadiene rubber and silicone rubber.

[0028] In other embodiments, the upper end of the three-way pipe 120 is connected to the main channel 110, and the lower end is connected to the atmosphere. At this time, the upper pressing block 231 of the lever 210 extends outwards, and the upper pressing block 231 faces the three-way pipe 120 from right to left. The lower pressing block 232 is arranged on the lever 210 and faces the three-way pipe 120 from left to right. After the pressing valve 200 and the multi-way valve 100 are assembled, the lever 210 is located beside the three-way pipe 120, the upper pressing block 231 is located on the right side of the three-way pipe 120, and the lower pressing block 232 is located on the left side of the three-way pipe 120. The elastic member 300 is arranged on the lever 210 and is located between the lever 210 and the three-way pipe 120. When the lever 210 is not stressed, the lever 210 is bounced away from the three-way pipe 120 by the elastic member 300, driving the upper pressing block 231 to press against the three-way pipe 120 from right to left, so that the suction valve 130 is isolated from the main channel 110. When the lever 210 is stressed, the lever 210 is pressed against the three-way pipe 120 to the right, so that the suction valve 130 is isolated from the open end of the three-way pipe 120, and the suction valve 130 is connected to the main channel 110 to realize the negative pressure suction function of the endoscope.

[0029] The elastic member 300 can be a disc spring, a compression spring, rubber, foam, an elastic polymer material and other elastic members.

[0030] Refer to the appendix Figure 1In it, the upper end of the lever 210 is hinged to the main channel 110, and an elastic member 300 is provided at the hinge. Pressing the lever 210 to control negative pressure suction conforms to the user's usage habit and improves the operation experience of the endoscope. The elastic member 300 can be a torsion spring, a helical spring, etc. sleeved on the hinge shaft. The elastic member 300 can also lift the lever 210 to avoid accidental activation of negative pressure suction. It can also increase the feel of the button 220.

[0031] Appendix Figure 1 And 2 In it, an upper baffle 113 and a lower baffle 114 are provided on the main channel 110. The upper baffle 113 and the upper pressing block 231 are respectively located on both sides of the three-way pipe 120, and the lower baffle 114 and the lower pressing block 232 are respectively located on both sides of the three-way pipe 120. The baffle can give a reverse supporting force to the pressing block, so that when the pressing block presses against the three-way pipe 120, the pressure can act completely on the three-way pipe 120, and the three-way pipe 120 can be deformed under pressure, making the blocking effect of the channel better and the operation more labor-saving and convenient. Moreover, the elastic member 300 can also press against the baffle, which can prevent the elastic member 300 from accidentally closing the three-way pipe 120 by pressing on the pipe of the three-way pipe 120.

[0032] The instrument port 112 and the liquid inlet 111 are located on the same axis. The medical instrument enters the endoscope from the instrument port and enters the insertion tube of the endoscope from the liquid inlet 111. The channel through which the instrument passes in the handle is straight, avoiding damage to the instrument caused by bending of the instrument in the handle or air leakage and liquid leakage caused by the instrument piercing through the working channel, and improving the efficiency of the instrument entering.

[0033] A biopsy valve is provided on the instrument port 112 of the multi-way valve 100. The multi-way valve 100 integrates multiple functions and multiple interfaces, simplifies the structure inside the handle, and the multi-way valve 100 is fixed in the handle. Different pipes are connected to the multi-way valve 100 to realize the fixation of the suction valve assembly in the handle, improving the assembly efficiency of the handle and making the production and assembly of the handle more convenient.

[0034] The above is a specific description of the preferred embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, those skilled in the art can make various equivalent variations or substitutions without departing from the spirit of the present invention. Other embodiments that can be obtained all fall within the scope of protection of the present invention.

Claims

1. An endoscopic suction structure, characterized in that: Comprising A multi-way valve, the multi-way valve includes a main channel, a three-way pipe and a suction valve. The two ends of the main channel are respectively a liquid inlet and an instrument port. One end of the flexible three-way pipe is communicated with the main channel, and the suction valve is arranged on the three-way pipe and communicated with the three-way pipe; A pressing valve, the pressing valve includes a lever, a button arranged on one side of the lever, an upper pressing block and a lower pressing block arranged on the other side of the lever. The extending directions of the upper pressing block and the lower pressing block are opposite. The upper pressing block and the lower pressing block are respectively located on both sides of the three-way pipe, and the suction valve is located between the upper pressing block and the lower pressing block. Pressing the button drives the upper pressing block or the lower pressing block to block the communication between the suction valve and the atmosphere end of the three-way pipe, and releasing the button drives the other pressing block to block the communication between the suction valve and the main channel; An elastic member, arranged between the multi-way valve and the pressing valve, driving the pressing valve away from the three-way pipe.

2. The endoscopic suction structure according to claim 1, wherein: The elastic member is arranged between the lever and the three-way pipe and is located on the lever or the three-way pipe.

3. The endoscopic suction structure according to claim 1, characterized in that: The upper end of the lever is hinged to the main channel, and an elastic member is arranged at the hinge.

4. The endoscopic suction structure according to claim 1, characterized in that: Upper baffle and lower baffle are arranged on the main channel. The upper baffle and the upper pressing block are respectively located on both sides of the three-way pipe, and the lower baffle and the lower pressing block are respectively located on both sides of the three-way pipe.

5. The endoscopic suction structure according to claim 1, characterized in that: Anti-slip lines are arranged on the button.

6. The endoscopic suction structure according to claim 1, wherein: The instrument port and the liquid inlet are on the same axis.

7. The endoscopic suction structure according to claim 1, wherein: A biopsy valve is arranged on the instrument port of the multi-way valve.

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