Gastrointestinal endoscope water and gas control valve group

Abstract

A gastrointestinal endoscope water and gas control valve group can realize four functions of main cavity air flushing, main cavity liquid flushing, liquid aspiration and lens flushing. It maximizes the savings of external support components and can complete the above functions by only connecting an air pump, a vacuum container and a water storage container externally. It is highly integrated and saves equipment use costs. Through humanized settings, the digestive tract endoscope operation can be controlled by one hand with the handle.

Description

Technical Field

[0001] The invention relates to a water and gas control module of an endoscope, in particular to a water and gas control valve group of an endoscope used for the digestive tract. Background Art

[0002] Existing digestive tract endoscopes control multiple functions through a water and gas control valve group in the handle. The valve group is usually equipped with two valve bodies, and the buttons on the top of the valve core respectively control the three functions of main cavity air flushing, main cavity liquid flushing, and liquid suction. One of the control valves is responsible for controlling negative pressure suction, which is used to absorb endocrine secretions such as sputum from the body, and the other can switch the water intake and air intake states to control the pressure water from the water pump or the gas from the air pump. A suction pump, a flushing pump, and a water pump are required for support respectively.

[0003] The valve group also cannot switch between main channel flushing and auxiliary channel flushing. The auxiliary channel flushing can be used to self-flushed the endoscope lens, which is beneficial to keep the lens clean and the imaging effect. The auxiliary channel flushing also requires a separate air circuit to independently control the flushing.

[0004] In addition, the existing valve group needs to provide high-pressure blowing, negative pressure suction and water pump water supply, and the structure is complicated. Even if the blowing and suction are combined, at least one cabinet is required to provide air supply and one cabinet to provide high-pressure water supply. The structure is complicated and the cost is high, so smaller hospitals often consider the cost and find it difficult to use a fully functional multifunctional endoscope. Summary of the invention

[0005] The technical problem to be solved by the present invention is: a gastrointestinal endoscope valve group supported by low-cost equipment, which shrinks the original suction pump, inflation pump and water pump into an air pump that performs all functions, and cooperates with a newly designed gastrointestinal endoscope water and gas control valve group to achieve all the above functions and additionally provide a flushing function for the endoscope lens.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problems is: a gastrointestinal endoscope water and gas control valve group, which is composed of a first valve body, a second valve body and a third valve body, and is used in conjunction with a single cabinet and a first container for water storage and a second device for vacuuming and serving as a collector; it is characterized in that: the single cabinet has only one air pump built in, the air inlet of the air pump is connected to the first air pipe, and the first air pipe and the first suction pipe are both connected to the second container; the air outlet of the air pump is connected to the second air pipe and the third air pipe after passing through a three-way connection; the second air pipe enters the water storage container and is located above the liquid level of the water storage container; the first water pipe connects the water storage container with the water inlet in the middle of the first valve body; the third air pipe is connected to the air inlet at the bottom of the first valve body; the piston of the first valve body has a double-ring piston, the upper half of which is connected to the first water outlet of the first valve body, and the lower half is connected to the second water outlet of the first valve body The valve body is connected to the first water outlet of the endoscope, and the second water outlet of the third valve body is connected to the water inlet of the first valve body, and the air outlet of the first valve body is connected to the air outlet of the first valve body; the pistons of the second valve body and the third valve body are both hollow tube pistons, the piston of the second valve body is an air inlet piston connected to the atmosphere, and the piston of the third valve body is an air outlet piston connected to the atmosphere; the second valve body is connected to the second suction pipe in the working pipeline of the endoscope, and the piston of the second valve body is used to control whether the second suction pipe is connected to the first suction pipe; the third valve body is a gas-liquid switching valve, which controls whether the main working pipeline in the working pipeline of the endoscope is in a liquid flushing state or a high-pressure gas flushing state. Its first outlet is connected to the fourth water pipe, and the second outlet is connected to the fifth air pipe, and the fourth water pipe and the fifth air pipe are connected to the main working pipeline in the working pipeline of the endoscope through a three-way valve.

[0007] The advantage of the present invention is that it can realize four functions of vacuuming, blowing, high-pressure flushing and endoscope head cleaning pipeline with only one air pump, which greatly reduces the dependence of the endoscope module on external input devices and significantly reduces the equipment cost.

[0008] The air pump generates a vacuum function to evacuate the second container, and the second liquid suction tube is used as a common channel for air intake and liquid suction.

[0009] At the same time, after the air pressure of the air pump enters the first container, the water is pressed out, and through the third valve body, it can control the switching of the main working pipeline or the lens cleaning pipeline. The valve core of the third valve body can also be used to control whether liquid flushing is performed, which is very convenient.

[0010] The second valve body controls whether the air is sucked in from the suction pipe, and the opening on the valve core of the second valve body can be used to control whether the first container generates a vacuum.

[0011] As an important component of the endoscope control handle for the digestive tract, the valve core switch corresponding to the first valve body to the third valve body is controlled by the middle finger, ring finger and little finger respectively, which does not affect the bending control of the endoscope snake tube operated by the thumb. On the basis of ergonomic design, it greatly integrates the functions of each finger and realizes the one-handed operation of the multi-functional control handle, which is very helpful for doctors to perform intubation surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 : Structural diagram of the endoscope handle, the water and gas control valve group of the present invention is located at A in the figure.

[0013] Figure 2 : Connection relationship diagram of the initial state.

[0014] Figure 3 : Connection diagram of blowing state.

[0015] Figure 4 :Connection diagram of the main pipeline water spraying status. (The main pipeline water spraying is to spray water to clean the lesion)

[0016] Figure 5 :Auxiliary water spray filling connection diagram. (Auxiliary water spray is the endoscope lens cleaning water spray)

[0017] Figure 6 : Connection diagram of vacuum state.

[0018] Figure 7 : Connection diagram for liquid aspiration and filling.

[0019] 11 is the first valve body, 12 is the second valve body, 13 is the third valve body, 21 is the first water pipe, 22 is the second water pipe, 23 is the third water pipe, 24 is the fourth water pipe, 31 is the first air pipe, 32 is the second air pipe, 33 is the third air pipe, 34 is the fourth air pipe, 35 is the fifth air pipe, 41 is the first liquid pipette, 42 is the second liquid pipette. 51 is the first container, 52 is the second container, wherein there is always water in the first container, and there is no water in the second container, which serves as a collection bottle. 6 is an air pump, and 7 is a chassis.

[0020] in Figure 3-Figure 7 The finger symbol in the figure represents pressing the valve core or blocking the valve core vent hole of the first valve body or the second valve body.

[0021] 91 is a button, 92 is a spring, 93 is a valve seat, 94 is a valve core sealing ring, and 95 is a valve sleeve. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0023] The present invention is a multifunctional and highly integrated water and gas control valve group for digestive tract endoscopes, which can greatly reduce the dependence on external equipment and provide multiple functions of digestive tract endoscopes at the lowest cost, including main channel air flushing function, main channel water flushing function, endoscope lens cleaning function and vacuum negative pressure suction function for lesions. Figure 1 As shown, the water and gas control valve group of the present invention is located on the rear side of the endoscope handle.

[0024] As external support, it only needs a cabinet for holding the air pump and the first container, and the second container works in cooperation. The air pump is connected to the first air pipe as the air inlet pipe, and the air outlet is connected to the second air pipe and the third air pipe after passing through the three-way. The first container is used as a vacuum container and also as a suction liquid collection container; the second container is a water storage container, which is connected to the second air pipe and the first water pipe respectively.

[0025] As the connecting part with the endoscope tube, the fourth water pipe is connected with the fifth air pipe through a tee and then enters the main channel of the endoscope tube, the third water pipe enters the secondary channel of the endoscope tube for cleaning the lens, and the second pipette is connected with the pipette channel of the endoscope tube.

[0026] It is mainly composed of a first valve body, a second valve body and a third valve body.

[0027] The first valve body mainly controls whether the liquid enters the main channel or the secondary channel for cleaning the lens, and at the same time provides the function of closing the air outlet channel and the main channel at the same time, forcing the air pressure generated by the air pump to pressurize water in the second container. The valve core of the first valve body is a solid valve core, and the top is a button. The first valve body has two inlets, which are respectively connected to the first water pipe and the third air pipe; and three outlets, which are respectively connected to the second water pipe, the third water pipe and the fourth air pipe.

[0028] The main function of the second valve body is to switch between liquid suction and air suction. The air inlet of the second liquid suction pipe or the first container is connected to the atmosphere to control the switching of the two functions. The outlet of the first valve body is connected to the first liquid suction pipe.

[0029] The main function of the third valve body is to control the gas-liquid switching of the main channel and to directly discharge the compressor into the air. It has two inlets, which are respectively connected to the second water pipe and the fourth air pipe. It has three outlets, which are respectively connected to the fourth water pipe, the fifth air pipe and the atmosphere.

[0030] The valve cores of the second valve body and the third valve body are both hollow structures. The top of the valve core is used as a button, and the bottom of the valve core is connected to the atmosphere. The second valve body inhales from the air, and the third valve body exhausts into the air. By blocking the hole on the valve core, the communication relationship between the interior and the atmosphere can be controlled. This can achieve vacuuming or introducing high-pressure gas into the human body, or introducing the generated pressure water into the main channel of the endoscope tube or the secondary channel for cleaning the lens.

[0031] like Figure 2As shown, in the initial state: the air pump is started, the first valve body, the second valve body, and the third valve body are all in a free state (i.e., the finger does not press the valve core and does not block the valve core hole), there is no pressure in the first container, the second container is not vacuum, there is resistance in the fifth air pipe and no air can be discharged, the air path is along the direction of the arrow, the gas is sucked in from the center hole of the second button, through the air pump and the first container and the second container, and discharged from the center hole of the third button to the atmosphere, the entire air path is almost pressure-free, the air pressure in the second container is atmospheric pressure, and the system involving water is actually in a non-working state.

[0032] like Figure 3 As shown, in the blowing state: the air pump is started, the finger seals the outlet of the third button but does not push the valve core of the third button, the first valve body and the second valve body are in a free state, the second container is not vacuum, a certain pressure is generated in the first container, the air path is along the direction of the arrow, and the gas flows out from the fifth airway, realizing the main channel blowing and blowing the lesion.

[0033] like Figure 4 As shown, in the water spraying state: the air pump is started, the finger seals the outlet of the third button and pushes the third to the limit position, the fifth air pipe is blocked, the pressure in the first container increases, and water is pressed into the first water pipe, through the first valve body, the second water pipe and the third valve body, and flows out from the fourth water pipe, realizing water spraying in the main channel to flush the lesion.

[0034] like Figure 5 As shown, the auxiliary water spray state: the air pump is started, the finger presses the first button and pushes the valve core to the limit position. Since the fourth air pipe is blocked, the pressure in the first container increases, and water is pressed into the first water pipe, passes through the third valve body, and flows out from the third water pipe to realize the auxiliary water spray, that is, flushing the lens.

[0035] like Figure 6 As shown, vacuum state: in this state, the air pump is started, the finger seals the outlet of the second button but does not push the second valve core, the first valve body and the third valve body are in a free state, the first container has no pressure, and the second valve body is in a closed state. After a period of time, because the second valve core is blocked, no gas is input from the atmosphere, and air cannot be extracted from the lesion, so the second container gradually forms a vacuum state when the air pump is evacuated, and the real-time air pressure is displayed by the pressure gauge on the second container.

[0036] like Figure 7 The figure shows the liquid suction state: when the second container forms a vacuum state, the finger presses the second button and pushes the valve core of the second button to the limit position. At this time, the air pump, the first air pipe, the first liquid suction pipe, the second valve body and the second liquid suction pipe are connected, the first valve body and the third valve body are in a free state, there is no pressure in the first container, and the liquid in the human body is sucked out into the second container through the second liquid suction pipe.

[0037] After the liquid is sucked, release all fingers, the valve core of the second valve body returns to its original position under the action of the spring, the liquid is sucked and air is sucked into the atmosphere from the valve core of the second valve body. The whole water-gas system returns to the initial state and the first container returns to normal atmospheric pressure.

Claims

1. A gastrointestinal endoscope water and gas control valve assembly, which is composed of a first valve body, a second valve body and a third valve body, and is used in conjunction with a single cabinet, a first container for storing water, and a second container that can be vacuumed and serves as a collector; the characteristics are: The single cabinet has only one built-in air pump, the air inlet of the air pump is connected to the first air pipe, and the first air pipe and the first suction pipe are both connected to the second container; the air outlet of the air pump is connected to the second air pipe and the third air pipe after passing through a tee; the second air pipe enters the first container and is located above the liquid level of the first container; the first water pipe connects the first container with the water inlet in the middle of the first valve body; the third air pipe is connected to the air inlet at the bottom of the first valve body; a double-ring piston is provided on the valve core of the first valve body, the upper half of which is connected to the first water outlet of the first valve body, and the lower half is connected to the second water outlet of the first valve body; the first water outlet of the first valve body is directly connected to the cleaning water outlet of the endoscope through the third water pipe; the second water outlet of the first valve body is connected to the water inlet of the third valve body through the second water pipe, and the The air outlet is connected to the air inlet of the third valve body through the fourth air pipe; the valve cores of the second valve body and the third valve body are both hollow structures, the valve core of the second valve body is an air inlet valve core connected to the atmosphere, and the valve core of the third valve body is an air outlet valve core connected to the atmosphere; the water inlet of the second valve body is connected to the second liquid suction tube in the endoscope working pipeline, and the water outlet of the second valve body is connected to the first liquid suction tube, and whether the second liquid suction tube is connected to the first liquid suction tube is controlled by the valve core of the second valve body; the third valve body is a gas-liquid switching valve, which controls whether the main working pipeline in the endoscope working pipeline is in a liquid flushing state or a high-pressure gas flushing state, its first outlet is connected to the fourth water pipe, and the second outlet is connected to the fifth air pipe, and the fourth water pipe and the fifth air pipe are both connected to the main working pipeline in the endoscope working pipeline through a tee; In the initial state: the air pump is started, the first valve body, the second valve body, and the third valve body are all in a free state, the gas is sucked in from the center hole of the valve core of the second valve body, passes through the second container, the air pump and the first valve body, and is discharged into the atmosphere from the center hole of the valve core of the third valve body; In the blowing state: the air pump is started, the finger seals the outlet of the valve core of the third valve body but does not push the valve core of the third valve body, the first valve body and the second valve body are in a free state, and the gas flows out from the fifth air pipe through the second valve body, the second container, the air pump, the first valve body, the third valve body; In the water spraying state: the air pump is started, the finger seals the outlet of the valve core of the third valve body and pushes the valve core of the third valve body to the limit position, the fifth air pipe is blocked, the pressure in the first container increases, the water is pressed into the first water pipe, through the first valve body, the second water pipe and the third valve body, and flows out from the fourth water pipe; Secondary water spraying state: the air pump is started, the finger pushes the valve core of the first valve body to the limit position, the fourth air pipe is blocked, the pressure in the first container increases, the water is pressed into the first water pipe, passes through the first valve body, and flows out from the third water pipe; Vacuuming state: the air pump is started, the finger seals the inlet of the second valve body valve core but does not push the second valve body valve core, the first valve body and the third valve body are in a free state, the second valve body is in a closed state, and the second container gradually forms a vacuum state under the air pump evacuation state; Liquid suction state: when the second container forms a vacuum state, the finger seals the inlet of the valve core of the second valve body and pushes the valve core of the second valve body to the limit position. At this time, the air pump, the first air pipe, the first liquid suction tube, the second valve body and the second liquid suction tube are connected, and the liquid in the human body is sucked out into the second container through the second liquid suction tube.

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