Suction valve structure of endoscope

Abstract

A multi-way valve comprises a main channel, a switching device and a suction connector, the main channel penetrates through the switching device, a first channel, a second channel and a negative pressure channel are arranged in the switching device, and the first channel and the second channel are separated from each other front and back along the axis of the negative pressure channel. The first channel and the second channel are at least partially intersected at the negative pressure channel joint, and the suction interface is arranged on the switching device and is communicated with the negative pressure channel; the pressing valve comprises a first connecting rod and a second connecting rod which are connected with each other and move in the same direction, the first connecting rod and the second connecting rod are provided with a first blocking block and a second blocking block respectively, the first blocking block detachably blocks the first through hole, and the second blocking block movably moves in the second channel. The negative pressure channel is directly connected with the suction connector and the main channel, suction force generated by the negative pressure source can directly act in the main channel, the suction connector is simple in internal structure, the suction force cannot be weakened, and the suction effect is good.

Description

Technical Field

[0001] The utility model relates to the field of medical device equipment, in particular to a suction valve structure of an endoscope. 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 openings such as the oral cavity or a surgical incision, 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 interface 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. During specific operations, the suction valve is connected to a negative pressure source to suck out body fluids and foreign objects in the body.

[0003] Currently, the suction structure in the endoscope is complex, the effective liquid flow space in the suction valve is small, the suction flow rate is small, foreign objects are easily stuck, and the situation of low efficiency of aspirating accumulated fluid and blockage of the suction interface easily occurs. Summary of the Utility Model

[0004] In order to overcome at least one of the above technical problems in the prior art, the utility model provides an endoscope suction mechanism in which the negative pressure channel is directly connected to the main channel, increasing the negative pressure attraction force and avoiding blockage of the suction channel.

[0005] There is provided a suction valve structure of an endoscope, including a multi-way valve and a pressing valve. The multi-way valve includes a main channel, a switching device, and a suction interface. The main channel passes through the switching device. A first channel, a second channel, and a negative pressure channel are further provided in the switching device. The negative pressure channel is communicated with the main channel, and the negative pressure channel is directly communicated with the main channel. The first channel and the second channel are connected to the negative pressure channel. The first channel and the second channel are separated from each other before and after along the axis of the negative pressure channel, but the first channel and the second channel at least partially intersect at the connection of the negative pressure channel, and the first channel and the second channel extend outward to form a first through hole and a second through hole on the outer wall of the switching device. The suction interface is provided on the switching device and communicated with the negative pressure channel. The pressing valve includes a first connecting rod and a second connecting rod that are connected to each other and move in the same direction. A first blocking block is provided at the end of the first connecting rod, and a second blocking block is provided at the end of the second connecting rod. The first blocking block detachably blocks the first through hole, and the second blocking block can move in the second channel.

[0006] The suction mechanism of the above-mentioned endoscope has at least the following beneficial effects: The negative pressure channels are directly connected to the suction interface and the main channel respectively. The suction force generated by the negative pressure source can directly act on the main channel. The internal structure of the suction interface is simple, and the suction force will not be weakened, so the suction effect is good. By controlling the connection between the first link and the second link and the switching device, the connection between the suction interface and the atmosphere or the main channel can be switched. The structure is simple and easy to operate, which conforms to the user's usage habits.

[0007] In some embodiments of the suction mechanism of the above-mentioned endoscope, the ends of the first plug and the second plug are flexible structures. The flexible ends can undergo elastic deformation, which is convenient for entering the switching device through the first channel and the second channel, reducing the difficulty of pressing. The flexible ends can also closely adhere to the inner wall of the switching device, having a better sealing effect.

[0008] In some embodiments of the suction mechanism of the above-mentioned endoscope, flexible pads are provided in the first through hole and / or the second through hole. The flexible pads can play a role in sealing the outlet, making the sealing effect between the first plug and the first through hole, and the second plug and the second through hole better, thereby improving the suction effect.

[0009] In some embodiments of the suction mechanism of the above-mentioned endoscope, the upper ends of the first link and the second link are connected by a connecting ring, and the connecting ring is hinged to the multi-way valve. The first link and the second link drive the same-direction rotation through the connecting ring, making the operation simpler and more in line with the user's usage habits.

[0010] In some embodiments of the suction mechanism of the above-mentioned endoscope, an elastic member is provided between the second link and the multi-way valve. The elastic member drives the second link away from the second through hole, so that when the pressing valve is not stressed, the suction interface is kept in communication with the atmosphere, avoiding accidents caused by the mis-start of negative pressure suction and improving the safety of the endoscope during use.

[0011] In some embodiments of the suction mechanism of the above-mentioned endoscope, a button is provided at the end of the first link or the second link. The button is beneficial for pressing the first link or the second link, making the operation more convenient.

[0012] In some embodiments of the suction mechanism of the above-mentioned endoscope, a biopsy valve is provided at the upper end of the main channel. When the instrument enters the endoscope from the end of the main channel, the biopsy valve can fix the instrument, facilitating the user to operate the instrument and the endoscope simultaneously, and can also provide a better sealing effect when the instrument enters. Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly describe the accompanying drawings required for the description of the embodiments. Obviously, the described drawings are only a part of the embodiments of the present utility model, rather than all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts:

[0014] Figure 1 It is a schematic structural diagram of the first state of the preferred embodiment of the present utility model;

[0015] Figure 2 It is the front view of the second state of the preferred embodiment of the present utility model;

[0016] Figure 3 It is a cross-sectional view of the switching device in the first state of the preferred embodiment of the present utility model;

[0017] Figure 4 It is a cross-sectional view of the switching device in the second state of the preferred embodiment of the present utility model. Detailed implementation manners

[0018] 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", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] It should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "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, 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 circumstances.

[0020] Refer to Figures 1 to 4, A suction valve structure of an endoscope, comprising a multi-way valve 100 and a pressing valve 200. The multi-way valve 100 includes a main channel 110, a switching device 120 and a suction interface 130. The main channel 110 passes through the switching device 120. A first channel 121, a second channel 122 and a negative pressure channel 123 are further provided in the switching device 120. The negative pressure channel 123 communicates with the main channel 110. The negative pressure channel 123 is directly communicated with the main channel 110. The first channel 121 and the second channel 122 are connected to the negative pressure channel 123. The first channel 121 and the second channel 122 are separated from each other before and after along the axis of the negative pressure channel 123, but the first channel 121 and the second channel 122 at least partially intersect at the connection of the negative pressure channel 123, and the first channel 121 and the second channel 122 extend outward to form a first through hole 124 and a second through hole 125 on the outer wall of the switching device 120. The suction interface 130 is provided on the switching device 120 and communicates with the negative pressure channel 123.

[0021] The pressing valve 200 includes a first connecting rod 210 and a second connecting rod 220 that are connected to each other and move in the same direction. A first plug 211 is provided at the end of the first connecting rod 210, and a second plug 221 is provided at the end of the second connecting rod 220. The first plug 211 detachably blocks the first through hole 124, and the second plug 221 is movably disposed in the second channel 122.

[0022] In this embodiment, the switching device 120 is integrated with the main channel 110. The first channel 121 is located on the left side of the negative pressure channel 123, and the second channel 122 is located on the right side of the negative pressure channel 123. The first through hole 124 is located on the left side surface of the switching device 120, and the second through hole 125 is located on the right side surface of the switching device 120. The first connecting rod 210 and the second connecting rod 220 of the pressing valve 200 are respectively located on the left and right sides of the switching device 120. The first plug 211 is located on the right side of the end of the first connecting rod 210 facing the first through hole 124, and the second plug 221 is located on the left side of the end of the second connecting rod 220 and is disposed in the second channel 122.

[0023] Refer to the appendix Figure 3 and 3 , in this embodiment, the first channel 121 is located in front of the second channel 122. When the pressing valve 200 is not stressed, it is in state one. The second plug 221 is located in the second channel 122 and is pressed against the inner wall of the negative pressure channel 123 to block the second channel 122. At this time, a part of the first channel 121 communicates with the negative pressure channel 123, and the negative pressure source is communicated with the atmosphere without negative pressure suction.

[0024] When the pressing valve 200 is pressed, it is in state two. The first blocking block 211 enters the first channel 121 to block the first through hole 124. At this time, the second blocking block 221 is located at the rightmost side of the second channel 122. The negative pressure channel 123 is connected to the suction interface 130, and the main channel 110 is connected to the negative pressure source to perform negative pressure suction.

[0025] In other embodiments, when the second channel 122 is located in front of the first channel 121, the structures of the second blocking block 221, the first blocking block 211, the first channel 121 and the second channel 122 are opposite to those of this embodiment, and the pressing valve 200 controls the movement of the second connecting rod 220.

[0026] According to different structures inside the handle, the first channel 121 and the second channel 122 can also be arranged on the upper and lower sides of the negative pressure channel 123. At this time, the first connecting rod 210 and the second connecting rod 220 are respectively located on the upper and lower sides of the switching device 120.

[0027] The negative pressure channel 123 is directly connected to the suction interface 130 and the main channel 110 respectively. The suction force generated by the negative pressure source can directly act on the main channel 110, and the suction force will not be weakened, so the suction effect is good. By controlling the connection between the first connecting rod 210 and the second connecting rod 220 and the switching device 120, the connection between the suction interface 130 and the atmosphere or the main channel 110 can be switched. The structure is simple and easy to operate, which conforms to the user's usage habits.

[0028] In this embodiment, both the first connecting rod 210 and the second connecting rod 220 are fixed on a connecting ring 230, and the connecting ring 230 is hinged to the multi-way valve 100. Therefore, when the first connecting rod 210 and the second connecting rod 220 move, the other connecting rod will also be driven to move in the same direction through the connecting ring 230, making the operation simpler and more in line with the user's usage habits.

[0029] In other embodiments, the upper ends of the first connecting rod 210 and the second connecting rod 220 are both fixed on the mounting rod, and the mounting rod is connected to the multi-way valve 100 through a guide rail, which can also realize the same-direction movement of the first connecting rod 210 and the second connecting rod 220 along the guide rail. Or the upper ends of the first connecting rod 210 and the second connecting rod 220 are connected to a gear, and by rotating the gear, the first connecting rod 210 and the second connecting rod 220 can be driven to move in the same direction.

[0030] In this embodiment, the ends of the first blocking block 211 and the second blocking block 221 are flexible structures. The elastic first blocking block 211 and second blocking block 221 can deform, which is convenient for entering the switching device 120 through the first channel 121 and the second channel 122, and reduces the difficulty of pressing the pressing valve 200. The flexible ends can also closely adhere to the inner wall of the switching device to avoid the leakage of the suction force and have a better sealing effect.

[0031] In some embodiments, an elastic member is provided between the second connecting rod 220 and the multi-way valve 100. The elastic member drives the second connecting rod 220 away from the second through hole, so that when the pressing valve 200 is not stressed, the suction interface 130 remains in communication with the atmosphere, avoiding accidents caused by the misactivation of negative pressure suction and improving the safety during the use of the endoscope.

[0032] In this embodiment, a button 212 is provided at the end of the first connecting rod 210. In other embodiments not shown, the button 212 may be provided on the second connecting rod 220. The area of the button 212 is larger than that of the connecting rod, which is beneficial to pressing the first connecting rod 210 or the second connecting rod 220, making the operation more convenient.

[0033] In this embodiment, a flexible pad 126 is provided in the second through hole 125. In other embodiments, the flexible pad 126 may also be provided in the first through hole 124. The flexible pad 126 can play a role in sealing the outlet, making the sealing effect between the first plug 211 and the first through hole 124, and between the second plug 221 and the second through hole 125 better, thereby improving the suction effect. In addition, the opening of the flexible pad 126 in the second through hole 125 is smaller than the diameter of the second plug 221, which can play a role in limiting the second plug 221.

[0034] The two ends of the main channel 110 are respectively an instrument inlet and an instrument outlet. In this embodiment, a biopsy valve 111 is provided at the instrument inlet at the upper end of the main channel 110. When the instrument enters the endoscope from the end of the main channel 110, the biopsy valve 111 can fix the instrument, facilitating the user to operate the instrument and the endoscope simultaneously, and can also provide a better sealing effect when the instrument enters.

[0035] 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, rather than 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 endoscope suction valve structure, characterized in that: include A multi-way valve, comprising a main channel, a switching device and a suction interface, wherein the main channel passes through the switching device, and a first channel, a second channel and a negative pressure channel are further provided in the switching device, wherein the negative pressure channel is directly connected to the main channel, and the first channel and the second channel are connected to the negative pressure channel, and the first channel and the second channel are arranged front and back along the axis of the negative pressure channel, but the first channel and the second channel at least partially intersect at the connection of the negative pressure channel, and the first channel and the second channel extend outward to form a first through hole and a second through hole on the outer wall of the switching device, and the suction interface is provided on the switching device and is connected to the negative pressure channel; The press valve comprises a first connecting rod and a second connecting rod which are connected to each other and move in the same direction, a first blocking block is arranged at the end of the first connecting rod, and a second blocking block is arranged at the end of the second connecting rod, the first blocking block can detachably block the first through hole, and the second blocking block can movably move in the second channel.

2. The suction valve structure of an endoscope according to claim 1, characterized in that: The ends of the first block and the second block are flexible structures.

3. The suction valve structure of an endoscope according to claim 1, characterized in that: A flexible pad is arranged in the first through hole and / or the second through hole.

4. The suction valve structure of an endoscope according to claim 1, characterized in that: The upper ends of the first connecting rod and the second connecting rod are connected through a connecting ring, and the connecting ring is hinged to the multi-way valve.

5. The suction valve structure of an endoscope according to claim 4, characterized in that: An elastic member is arranged between the second connecting rod and the multi-way valve.

6. The suction valve structure of an endoscope according to claim 1, characterized in that: A button is arranged on the end of the first connecting rod or the second connecting rod.

7. The suction valve structure of an endoscope according to claim 1, characterized in that: A biopsy valve is arranged at the upper end of the main channel.

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