Suction valve assembly and endoscope handle

Abstract

The utility model discloses a suction valve assembly and an endoscope handle. The suction valve assembly comprises a valve seat and a valve column. An air hole communicated with the atmosphere is formed in the upper end of the valve seat, a negative pressure connector is connected to one side of the valve seat, a suction connector is connected to the other side of the valve seat, and the negative pressure connector is arranged above the suction connector; the valve column is inserted into the valve seat and moves in the axial direction of the valve seat, a gap is reserved between the outer wall of the valve column and the inner wall of the valve seat, a sealing piece is arranged on the outer wall of the valve column and tightly attached to the inner wall of the valve seat, when the sealing piece is located at the first position, the suction connector is separated from the negative pressure connector, and the negative pressure connector is communicated with the air hole. And the suction interface is communicated with the negative pressure interface. The suction valve is arranged in the handle. By simplifying the structure of the suction valve, more space can be reserved for fluid to flow through, blockage is not prone to occurring, and smoothness of a suction channel is guaranteed. Opening and closing of the negative pressure channel can be achieved through movement of the valve column, operation is easy, and user expectation is met.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a suction valve component and an endoscope handle. Background Art

[0002] An endoscope is a device that enters the body through natural channels to perform inspections or treatments. It can enter the body through natural openings such as the mouth or surgical incisions, allowing medical practitioners to inspect and observe the internal conditions of the body, facilitating the diagnosis and treatment of diseases. Some endoscopes need to be used in conjunction with corresponding suction valve components to aspirate body fluids or foreign matter to eliminate interference from accumulated fluid during inspection and treatment, ensure the doctor's field of view, or collect body fluids for subsequent laboratory tests and diagnoses. At present, the structure of the endoscope suction valve is complex, the suction flow rate is small, and foreign matter is easily stuck, resulting in failure of the suction function. It is also difficult to assemble and the production cost is too high. Utility Model Content

[0003] In order to overcome at least one of the technical problems of the above-mentioned prior art, the utility model provides a suction valve assembly and an endoscope handle with large liquid flow, simple structure and easy disinfection and cleaning.

[0004] A suction valve assembly is provided, comprising a valve seat and a valve column; an air hole connected to the atmosphere is provided at the upper end of the valve seat, a negative pressure interface is connected to one side of the valve seat, and a suction interface is connected to the other side, and the negative pressure interface is arranged above the suction interface; the valve column is inserted into the valve seat and moves along the axial direction of the valve seat, and a gap is left between the outer wall of the valve column and the inner wall of the valve seat, a sealing member is provided on the outer wall of the valve column and is tightly attached to the inner wall of the valve seat, and when the sealing member is in a first position, the suction interface is separated from the negative pressure interface, and the negative pressure interface is connected to the air hole, and when the sealing member moves to a second position, the suction interface is connected to the negative pressure interface.

[0005] The above-mentioned suction valve assembly has at least the following beneficial effects: the structure of the suction valve is simplified, the parts inside the suction valve are fewer, more space can be left for fluid to flow through, it is not easy to be blocked, and the unobstructed suction channel is ensured. The opening and closing of the negative pressure channel can be achieved by moving the valve column, the operation is simple, and it meets the user's expectations. The production and assembly of the suction valve are simpler, which can reduce the production and assembly costs.

[0006] In some embodiments of the above suction valve assembly, the valve column includes a head at the upper end and a rod at the lower end, and the rod is configured as a hollow structure. By hollowing out the rod, more space is left in the valve seat, a larger flow of liquid can pass through, the possibility of foreign matter blockage is reduced, and the negative pressure suction effect is better.

[0007] In some embodiments of the above suction valve assembly, the sealing member is an upper sealing piece and a lower sealing piece arranged on the valve column, the valve seat is provided with an upper sealing piece and a lower sealing piece inside, the upper sealing piece is located above the negative pressure interface, the lower sealing piece is located between the negative pressure interface and the suction interface, and the lower sealing piece is located below the lower sealing piece. The provided sealing structure can ensure the sealing effect, ensure that there is no air or liquid leakage between the sealing member and the inner wall of the valve seat, and make the suction effect better.

[0008] In some embodiments of the above suction valve assembly, the upper end of the valve seat is made of a flexible material, and the valve column can move up and down to squeeze the valve seat to control the closing or opening of the pore. The flexible valve seat end is a flexible structure, which is more labor-saving and comfortable to press, and the pore is closed more quickly.

[0009] In some embodiments of the above suction valve assembly, an elastic member is disposed in the valve seat, and the elastic member has a tendency to push the valve column upward. The elastic member is conducive to the valve column to quickly return to the first position, and prevent accidents caused by accidentally touching the negative pressure suction valve.

[0010] An endoscope handle is also provided, comprising a handle shell and any of the above-mentioned suction valve assemblies, wherein a through working channel and a suction valve are provided in the handle shell, wherein the working channel is connected to the suction interface, and the negative pressure interface is connected to the suction valve.

[0011] The above-mentioned endoscope handle has at least the following beneficial effects: the above-mentioned suction valve is arranged on the handle, which can improve the suction efficiency of the endoscope and enhance the operational feel of negative pressure suction.

[0012] In some embodiments of the above endoscope handle, a multi-way valve is further provided, the multi-way valve is further provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the working channel, the liquid outlet is connected to the suction interface, and a biopsy valve is provided on the multi-way valve. The multi-way valve integrates multiple functions, simplifies the internal structure of the handle, and makes the production and assembly of the handle more convenient.

[0013] In some embodiments of the above-mentioned endoscope handle, the biopsy valve and the liquid inlet are located on the same axis. When a medical device passes through the biopsy valve, the entry channel of the device is a straight channel, which avoids bending of the device in the handle or scratching the working channel to cause air leakage and liquid leakage, thereby speeding up the efficiency of device entry.

[0014] In some embodiments of the above endoscope handle, the suction valve is integrally formed with the multi-way valve. A multi-way valve has multiple interfaces, which reduces the number of components in the handle and speeds up the assembly efficiency of the handle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of them. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work:

[0016] Figure 1 This is a schematic diagram of the structure of the suction valve assembly of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the valve column of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the suction valve assembly of the utility model in the first use state;

[0019] Figure 4 It is a cross-sectional schematic diagram of the suction valve assembly of the utility model in the second use state;

[0020] Figure 5 This is a schematic diagram of the structure of the suction valve and the multi-way valve assembled in the utility model;

[0021] Figure 6 It is a cross-sectional schematic diagram of the assembly of the multi-way valve of the utility model. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] It should be noted that, unless otherwise clearly specified and limited, 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] In order to solve the problem that the original suction valve has many parts and is easy to clog, refer to Figures 1 to 4, discloses a suction valve assembly, which includes a valve seat 100 and a valve column 200. The upper end of the valve seat 100 is provided with an air hole 110 connected to the atmosphere, one side of the valve seat 100 is connected with a negative pressure interface 120, and the other side is connected with a suction interface 130, and the negative pressure interface 120 is arranged above the suction interface 130; the valve column 200 is inserted into the valve seat 100 and moves along the axial direction of the valve seat 100, and a gap is left between the outer wall of the valve column 200 and the inner wall of the valve seat 100, and the gap forms a valve body channel through which liquid flows, and a seal is arranged on the outer wall of the valve column 200 to be in close contact with the inner wall of the valve seat 100. The negative pressure interface 120 will be connected to a negative pressure source, and the suction interface 130 will be connected to the liquid channel. When an external force is applied to drive the valve column 200 to move in the valve seat 100, the seal will be driven to move up and down in the valve seat 100, changing the connection and disconnection between the negative pressure interface 120 and the suction interface 130, thereby realizing the fluid direction attracted by the negative pressure source.

[0025] When the seal is in the first position, the suction interface 130 is separated from the negative pressure interface 120, and the negative pressure interface 120 is connected to the air hole 110. When the seal moves to the second position, the suction interface 130 is connected to the negative pressure interface 120. Specifically, the first position is between the negative pressure interface 120 and the suction interface 130. At this time, the negative pressure interface 120 and the suction interface 130 are separated by the seal, the negative pressure interface 120 is connected to the air hole 110 at the upper end of the valve seat 100, and the negative pressure source is connected to the atmosphere. The second position is between the negative pressure interface 120 and the air hole 110. At this time, the negative pressure interface 120 is separated from the air hole 110, the negative pressure interface 120 is connected to the suction interface 130, and the negative pressure source is connected to the liquid channel to suck the liquid.

[0026] The structure of the suction valve is simplified, the parts inside the suction valve are less, more space can be left for fluid to flow through, and it is not easy to be blocked, thus ensuring the smooth flow of the suction channel. The opening and closing of the negative pressure channel can be realized by moving the valve column 200, and the operation is simple.

[0027] For further information, see Attachment Figure 2The valve column 200 includes a head 210 at the upper end and a rod 220 at the lower end. The head 210 is connected to the upper end of the valve seat 100, and the rod 220 is set to a hollow structure. Specifically, the rod 220 is two mutually spaced columns 223 and a base 224 located at the bottom of the column 223. In other embodiments, the column 223 can be a different structure such as a cylinder, a square column, etc. The column 223 can be set to a different number such as one or three or more. The setting position of the column can be changed according to the number. A single column can be set in the middle of the base 224, and multiple columns can be set around the base 224 and evenly distributed. The rod 220 can be set to different hollow structures according to the needs, as long as there is space inside the rod 220 to accommodate the flow of fluid. The hollow structure design of the rod 220 leaves more space between the valve seat 100 and the valve column 200, which can pass a larger flow of liquid, reduce the possibility of foreign matter blockage, and further improve the effect of negative pressure suction.

[0028] In some embodiments, the upper end of the valve seat 100 is made of a flexible material, and the air holes 110 are arranged around the valve seat 100. When the valve column 200 moves up and down, it squeezes the valve seat 100, causing the upper end of the flexible valve seat 100 to deform, thereby controlling the closing or opening of the air holes 110. The flexible material at the end of the valve seat is more labor-saving and comfortable to press, and the air holes are closed more quickly and the sealing effect is better. Preferably, the upper end of the valve seat 100 is made of an elastic flexible material, such as styrene-butadiene rubber, butadiene rubber, silicone rubber and other elastic materials, which can automatically restore their shape when not subjected to external force, and drive the valve column 200 to return to its initial position.

[0029] In an embodiment, the sealing member is an upper sealing piece 221 and a lower sealing piece 222 arranged at the upper and lower ends of the valve column 200, and an upper sealing piece 101 and a lower sealing piece 102 are arranged inside the valve seat 100, the upper sealing piece 101 is located above the negative pressure interface 120, and the lower sealing piece 102 is located between the negative pressure interface 120 and the suction interface 130, and the lower sealing piece 222 is located on the base 224 of the valve column 200, and the base 224 is located below the lower sealing piece 102.

[0030] Reference Figure 3 and attached Figure 4 In the first position, the upper sealing piece 221 is located inside the upper end of the valve seat 100, and the lower sealing piece 222 is located below the lower baffle 102. The lower sealing piece 222 and the lower baffle 102 are pressed against each other to separate the negative pressure interface 120 and the suction interface 130. At this time, the negative pressure source is connected to the atmosphere outside the pore, and no liquid is sucked.

[0031] When the valve column 200 is pressed downward to the second position, the upper sealing sheet 221 presses against the upper baffle 101 to close the upper end of the valve body channel in the valve seat 100, and the lower sealing sheet 222 presses against the inner wall of the valve seat 100 to seal. At this time, the negative pressure interface 120 is separated from the air hole, and the suction interface 130 is connected to the negative pressure interface 120. At this time, the negative pressure source is connected to the liquid channel connected to the suction interface 130 to perform gas and liquid suction. The upper and lower sealing structures can ensure the sealing effect, ensure that there is no gas or liquid leakage between the seal and the inner wall of the valve seat 100, and the suction effect is better.

[0032] Furthermore, the edges of the upper baffle 101, the lower baffle 102, the upper sealing sheet 221 and the lower sealing sheet 222 in the embodiment are inclined curved surfaces or planes. When the sealing sheet and the baffle are pressed against each other, the pressing surfaces fit more closely, which can achieve a better sealing effect.

[0033] Furthermore, an elastic member is provided in the valve seat 100, and the elastic member has a tendency to push the valve column 200 upward to separate the negative pressure interface 120 and the suction interface 130. The elastic member can be made of a spring, rubber, foam, elastic polymer material, etc., and the elastic member is provided at the lower end of the valve column 200. The elastic member is conducive to the valve column 200 to quickly return to the first position, ensuring that the negative pressure interface 120 and the suction interface 130 are in a separated state when the suction valve is not pressed, and can avoid accidents caused by accidentally touching the suction valve to cause suction, thereby ensuring the safety of use.

[0034] An endoscope handle is also provided, comprising a handle housing and any of the above-mentioned suction valve assemblies, wherein a through working channel and a suction valve 400 are provided in the handle housing, wherein the working channel is communicated with the suction interface 130, and the negative pressure interface 120 is communicated with the suction valve 400. The above-mentioned suction valve is provided on the handle, which can improve the suction efficiency of the endoscope and enhance the operating feel of negative pressure suction.

[0035] Reference Figure 5 and 6 , a multi-way valve 300 is also provided in the handle, and the multi-way valve 300 is also provided with a liquid inlet 301 and a liquid outlet 302, the liquid inlet 301 is connected to the working channel, the liquid outlet 302 is connected to the suction interface 130, and a biopsy valve 303 is provided on the multi-way valve 300. In order to further optimize the handle structure, the suction valve 400 is fixed on the multi-way valve 300, and the suction valve 400 and the multi-way valve 300 are integrally formed. A multi-way valve has multiple interfaces and integrates multiple functions. The multi-way valve is fixed in the handle, and different pipes and valve bodies are connected to the multi-way valve to realize fixation in the handle, which reduces the components in the handle, speeds up the assembly efficiency of the handle, and makes the production and assembly of the handle more convenient.

[0036] Furthermore, the biopsy valve 303 and the liquid inlet 301 are located on the same axis, and the medical device in the biopsy valve 303 enters the working channel of the endoscope through the liquid inlet 301. The entry channel of the device is a straight channel, which avoids the bending of the device in the handle or the scratching of the working channel to cause air leakage and liquid leakage, speeds up the efficiency of the device entry, and facilitates the doctor's one-handed operation.

[0037] The above is a specific description of the preferred embodiments of the utility model. The described embodiments are only a part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, technicians familiar with the field can also make various equivalent modifications or substitutions without violating the spirit of the utility model. Other embodiments that can be obtained belong to the scope of protection of the utility model.

Claims

1. A suction valve assembly, characterized in that: include A valve seat, wherein an air hole communicating with the atmosphere is disposed at the upper end of the valve seat, a negative pressure interface is connected to one side of the valve seat, and a suction interface is connected to the other side of the valve seat, and the negative pressure interface is disposed above the suction interface; A valve column, wherein the valve column is inserted into the valve seat and moves along the axial direction of the valve seat, leaving a gap between the outer wall of the valve column and the inner wall of the valve seat, a sealing member is arranged on the outer wall of the valve column and is in close contact with the inner wall of the valve seat, when the sealing member is in the first position, the suction interface is separated from the negative pressure interface, and the negative pressure interface is connected to the air hole, and when the sealing member moves to the second position, the suction interface is connected to the negative pressure interface.

2. The suction valve assembly according to claim 1, characterized in that: The valve column comprises a head portion at an upper end and a rod portion at a lower end, and the rod portion is arranged as a hollow structure.

3. The suction valve assembly according to claim 1, characterized in that: The sealing member is an upper sealing plate and a lower sealing plate arranged on the valve column, and an upper sealing plate and a lower sealing plate are arranged inside the valve seat, the upper sealing plate is located above the negative pressure interface, the lower sealing plate is located between the negative pressure interface and the suction interface, and the lower sealing plate is located below the lower sealing plate.

4. The suction valve assembly according to claim 1, characterized in that: The upper end of the valve seat is made of flexible material, and the valve column can move up and down to squeeze the valve seat to control the closing or opening of the air hole.

5. The suction valve assembly according to claim 1, characterized in that: An elastic member is arranged in the valve seat, and the elastic member has a tendency to push the valve post upward.

6. An endoscope handle, characterized in that: It comprises a handle housing and any one of the suction valve components of claims 1 to 5, wherein a through working channel and a suction valve are provided in the handle housing, wherein the working channel is communicated with the suction interface, and the negative pressure interface is communicated with the suction valve.

7. The endoscope handle according to claim 6, characterized in that: A multi-way valve is also provided, and the multi-way valve is also provided with a liquid inlet and a liquid outlet, the liquid inlet is connected to the working channel, the liquid outlet is connected to the suction interface, and a biopsy valve is provided on the multi-way valve.

8. The endoscope handle according to claim 7, characterized in that: The biopsy valve and the liquid inlet are located on the same axis.

9. The endoscope handle according to claim 7, characterized in that: The suction valve and the multi-way valve are integrally formed.

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