Gastrointestinal fluid decompression device for gastrointestinal surgery

Abstract

The invention provides a gastrointestinal fluid decompression device for gastrointestinal surgery, and belongs to the field of medical instruments. Comprising a detachable gas-liquid collecting mechanism and a variable pressure control mechanism. By means of the deformation phenomenon generated when the elastic gas film is subjected to the action of gas, the buffering effect can be generated on flowing gas pressure, the surgical risk rate caused by the too large instantaneous value of the gas pressure can be effectively reduced through buffering, meanwhile, once the negative pressure value is overloaded, the elastic gas film can completely close the hole diameter under the action of the external atmospheric pressure, and the surgical risk rate is reduced. Therefore, an air flow path is blocked, and more serious operation accidents caused by air pressure negative value overload are prevented.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more specifically, to a gastrointestinal fluid decompression device for gastrointestinal surgery. Background Art

[0002] At present, the commonly used gastrointestinal decompression device has a single structure, and the accumulated fluid in the patient's abdominal cavity is sucked out through negative pressure suction. Since the negative pressure suction always exists, when the accumulated fluid in the patient's abdominal cavity is temporarily sucked out, at this time, the negative pressure suction function of the gastrointestinal decompression device continues to suck the patient's abdominal cavity. Over time, the negative pressure attraction causes harm to the patient's abdominal cavity and increases the pain of the patient during treatment.

[0003] For this reason, Chinese Patent with Publication No. CN215537074U discloses a gastrointestinal fluid decompression device for gastrointestinal surgery in clinical medicine. When in use, the size of the hole inside the liquid port is controlled by the plug block connected to the bottom end of the moving block to control the suction force of the liquid suction device, so that the patient will not feel pain due to too strong suction function. And when the plug block completely blocks the liquid port, it can prevent the gastrointestinal fluid from flowing back. At the same time, when in use, the liquid level inside the liquid suction tank can be observed through the liquid level observation window. When the liquid level exceeds the standard, the liquid pump can be started to timely pump away the gastrointestinal fluid, further avoiding the situation of gastrointestinal fluid flowing back.

[0004] However, in the actual working process of the above-mentioned gastrointestinal fluid decompression device for gastrointestinal surgery in clinical medicine, it only reduces the instantaneous negative pressure value by controlling the size of the air hole. As the working time increases, the phenomenon of negative pressure overload will still occur. Therefore, there is still a risk of excessive negative pressure attraction in the gastrointestinal fluid decompression device for gastrointestinal surgery in clinical medicine. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a gastrointestinal fluid decompression device for gastrointestinal surgery.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A gastrointestinal fluid decompression device for gastrointestinal surgery, comprising a bottom support seat for support; a detachable gas-liquid collection mechanism, which is internally provided with a transparent collection housing capable of storing the aspirated medium and installed in the middle of the bottom support seat, a first medium discharge pipe installed at the top of the transparent collection housing and capable of discharging the gas inside the transparent collection housing to the outside, a second medium discharge pipe installed at the bottom of the transparent collection housing and capable of discharging the aspirated medium, and a valve stem capable of controlling the flow state of the aspirated medium; and a variable pressure control mechanism, which is internally provided with a second hollow housing fixedly installed at the top of the first medium discharge pipe and having a hollow internal structure, a fourth medium flow pipe fixedly installed at the top of the second hollow housing and communicating with the internal structure of the second hollow housing, and an elastic air film placed inside the second hollow housing and reducing the gas flow aperture when subjected to air pressure negative pressure.

[0008] Optionally, the detachable gas-liquid collection mechanism includes a transparent collection housing, the inside of the transparent collection housing is provided with a cylindrical storage cavity with an open bottom end, the top of the transparent collection housing is provided with two pipe installation holes communicating the external space and the top end of the cylindrical storage cavity, a first medium flow pipe and a first medium discharge pipe are sequentially installed inside the two pipe installation holes, and the inside of both the first medium flow pipe and the first medium discharge pipe is a hollow structure. The bottom opening end of the transparent collection housing is installed with a detachable bottom seal cover. The center of the bottom end of the bottom seal cover is provided with a second medium discharge pipe extending downward. The inside of the second medium discharge pipe is provided with a medium discharge hole communicating the upper surface of the bottom seal cover and the lower space. One side of the circumferential inner wall of the medium discharge hole is provided with a horizontally arranged valve stem insertion hole. One side of the second medium discharge pipe is provided with a first hollow housing integrally formed with it and in a horizontal state. The inside of the first hollow housing is provided with a first component activity cavity. The inside of the second medium discharge pipe is provided with a valve stem activity hole corresponding to the valve stem insertion hole. Inside the first hollow housing located in the first component activity cavity, an inner movable plate capable of moving axially along the first component activity cavity is placed. One end of the inner movable plate is placed with a valve stem capable of inserting into the valve stem activity hole, the medium discharge hole and the valve stem insertion hole. The other end of the inner movable plate is fixedly installed with a pull rod penetrating through the corresponding end of the first hollow housing. A compressed first spiral spring is sleeved around the rod body of the pull rod located inside the first component activity cavity. One end of the pull rod located outside the first hollow housing is fixedly installed with a pull plate.

[0009] Optionally, the bottom end of the first medium flow pipe extends to near the bottom end of the cylindrical storage cavity, and the bottom end of the medium discharge pipe extends to near the top end of the cylindrical storage cavity.

[0010] Optionally, the structural radius of the valve stem is consistent with the structural radii of the valve stem moving hole and the valve stem insertion hole, and is greater than the structural radius of the medium discharge hole.

[0011] Optionally, the variable pressure control mechanism includes a second hollow housing. A second component moving cavity is arranged inside the second hollow housing. A second medium flow pipe fixedly connected to the top end of the first medium discharge pipe is arranged at the bottom of the second component moving cavity. A third medium flow pipe with a hollow structure inside is fixedly installed at the top end of the second hollow housing. A plurality of gas compensation ports communicating the external space and the outer circumferential surface of the second component moving cavity are arranged at the circumferential wall thickness of the second hollow housing. An elastic air film is embedded inside the second hollow housing in the second component moving cavity. A fourth medium flow pipe with its interior communicating with the internal structure of the third medium flow pipe is fixedly installed at the top end of the third medium flow pipe. A first medium flow hole is arranged at the circumferential wall thickness of the fourth medium flow pipe.

[0012] Optionally, the bottom end of the elastic air film is embedded in the bottom structure of the second component moving cavity, and the top end is embedded in the top structure of the second component moving cavity.

[0013] Optionally, an elastic anti-overload mechanism is further included, which internally has a third hollow housing fixedly installed around the fourth medium flow pipe and with a hollow interior, a movable valve plate placed inside the third hollow housing and capable of allowing external gas to enter the first medium flow hole when moving, and a second helical spring placed inside the third hollow housing and capable of exerting an elastic damping effect on the movable valve plate.

[0014] Optionally, the elastic anti-overload mechanism includes a third hollow housing. A third component moving cavity is arranged inside the third hollow housing. One end of the third hollow housing is provided with a butt joint pipe integrally structured with it. One end of the butt joint pipe is provided with a fixed collar integrally structured with it. The fixed collar is fixedly installed around the fourth medium flow pipe. A first gas flow hole communicating one end of the third component moving cavity and the first medium flow hole is arranged inside the fixed collar and the butt joint pipe. The other end of the third hollow housing is provided with a second gas flow hole communicating the external space and the other end of the third component moving cavity. A movable valve plate capable of moving axially along the third component moving cavity is placed inside the third component moving cavity. A second helical spring in a compressed state is placed at one end of the movable valve plate facing the first gas flow hole. A plurality of gas flow grooves with concave structures are arranged on the circumferential surface of the movable valve plate. An annular embedding groove with a concave structure is arranged at the end of the movable valve plate facing the second gas flow hole. An annular sealing ring is fixedly installed inside the annular embedding groove of the movable valve plate.

[0015] Optionally, the elastic strength of the second helical spring is not less than the deformation strength required for the elastic air film to be fully closed.

[0016] Optionally, the thickness of the annular sealing ring is greater than the depth of the annular embedding groove, the structural radius of the inner ring of the annular sealing ring is greater than the structural radius of the second gas flow hole, and the structural radius of the outer ring of the annular sealing ring is less than the distance between the gas flow groove and the axis of the movable valve plate.

[0017] The technical solution provided by the present invention has at least the following beneficial effects compared with the prior art:

[0018] In the above solution, by using the deformation phenomenon of the elastic air film when it is affected by gas, a buffering effect can be produced on the flowing air pressure. The buffering can effectively reduce the surgical risk rate caused by the instantaneous value of the air pressure being too large. At the same time, once the negative pressure value is overloaded, the elastic air film will completely close its aperture under the action of the external atmospheric pressure, thereby blocking the gas flow path and preventing the occurrence of more serious surgical accidents caused by the negative pressure of the air pressure being overloaded.

[0019] By setting a detachable gas-liquid collection mechanism, since the internal gas is pumped out, the accumulated liquid will be sucked into the interior of the cylindrical storage cavity and stored therein. Pull the pull plate outwards so that the valve stem exits the medium discharge hole, and the accumulated liquid will be discharged downward through the medium discharge hole. When cleaning is required, remove the bottom sealing cover to clean the remaining accumulated liquid, thereby realizing the functions of pre-storing and discharging the sucked gas or accumulated liquid.

[0020] By setting a variable pressure control mechanism, when the pressure of the air extraction is greater than the deformation strength of the elastic air film, the external atmospheric pressure will force the inner diameter of the elastic air film to close, thereby reducing the gas flow rate, and further alleviating the gas pressure in the patient's abdominal cavity caused by the negative pressure. When a negative pressure overload occurs, under the action of the external atmospheric pressure, the inner hole of the elastic air film will be completely closed, thereby blocking the gas from being pumped out upwards, and further preventing the occurrence of medical accidents caused by the air pressure in the patient's abdominal cavity being too small. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0022] Figure 1 is a perspective view of the present invention;

[0023] Figure 2 is a perspective sectional view of the present invention;

[0024] Figure 3This is the three-dimensional sectional view of the detachable gas-liquid collection mechanism in the main perspective of the present invention;

[0025] Figure 4 This is the three-dimensional sectional view of the detachable gas-liquid collection mechanism in the right-side perspective of the present invention;

[0026] Figure 5 This is the three-dimensional view of the variable pressure control mechanism of the present invention;

[0027] Figure 6 This is the three-dimensional sectional view of the variable pressure control mechanism of the present invention;

[0028] Figure 7 This is the three-dimensional sectional view of the elastic anti-overload mechanism of the present invention;

[0029] Figure 8 This is the three-dimensional view of the movable valve plate of the present invention.

[0030] [Reference Numerals]

[0031] 1. Bottom support base;

[0032] 2. Detachable gas-liquid collection mechanism; 21. Transparent collection housing; 22. Cylindrical storage cavity; 23. Bottom sealing cover; 24. Pipe installation hole; 25. First medium flow pipe; 26. First medium discharge pipe; 27. Pulling plate; 28. Second medium discharge pipe; 29. Medium discharge hole; 210. Valve rod insertion hole; 211. First hollow housing; 212. First component movable cavity; 213. Valve rod movable hole; 214. Inner movable plate; 215. Valve rod; 216. Pull rod; 217. First spiral spring;

[0033] 3. Variable pressure control mechanism; 31. Second hollow housing; 32. Second component movable cavity; 33. Second medium flow pipe; 34. Third medium flow pipe; 35. Gas compensation port; 36. Elastic gas film; 37. Fourth medium flow pipe; 38. First medium flow hole;

[0034] 4. Elastic anti-overload mechanism; 41. Third hollow housing; 42. Docking pipe; 43. Fixed collar; 44. First gas flow hole; 45. Second gas flow hole; 46. Movable valve plate; 47. Second spiral spring; 48. Annular embedding groove; 49. Gas flow groove; 410. Annular sealing ring; 411. Third component movable cavity.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed Embodiments

[0036] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative ways to implement them; moreover, the accompanying drawings are only for more specifically describing the embodiments, and are not intended to specifically limit the present invention.

[0037] It should be noted that in the specification, references to "one embodiment", "an embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Additionally, when describing a specific feature, structure, or characteristic in combination with an embodiment, it should be within the knowledge of those skilled in the relevant art to implement such a feature, structure, or characteristic in combination with other embodiments whether or not it is explicitly described.

[0038] Generally, terms can be understood, at least in part, from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but rather, at least in part depending on the context, to allow for the existence of other factors that may not be explicitly described.

[0039] It can be understood that the meanings of "on...", "above...", and "overhead..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "overhead..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0040] Furthermore, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. may be used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the accompanying drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device other than the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptive words used herein may be similarly interpreted accordingly.

[0041] As Figures 1 to 8As shown, an embodiment of the present invention provides a gastrointestinal fluid decompression device for gastrointestinal surgery, including a bottom support base 1 that plays a supporting role, fixedly installing the bottom support base 1 in the working area, docking the top end of the first medium flow pipe 25 with a straw for absorbing gas or effusion in the patient's abdominal cavity, and then docking the fourth medium flow pipe 37 with the air extraction port of an air extraction device.

[0042] As Figures 1 to 4 shown, in order to achieve the functions of pre-storing and discharging the sucked gas or effusion, a detachable gas-liquid collection mechanism 2 is provided, which internally has a transparent collection outer shell 21 that can store the sucked medium and is installed in the middle of the bottom support base 1, a first medium discharge pipe 26 installed at the top of the transparent collection outer shell 21 and capable of discharging the gas inside the transparent collection outer shell 21 to the outside, a second medium discharge pipe 28 installed at the bottom of the transparent collection outer shell 21 and capable of discharging the sucked medium, and a valve rod 215 that can control the flow state of the sucked medium. Since the internal gas is extracted, the effusion will be sucked into the internal part of the cylindrical storage cavity 22 and pre-stored inside the cylindrical storage cavity 22. After the work is completed, pulling the pull plate 27 outwards causes the valve rod 215 to withdraw from the medium discharge hole 29, and the effusion will be discharged downward through the medium discharge hole 29. When cleaning is required, removing the bottom sealing cover 23 can clean the remaining effusion, thus achieving the functions of pre-storing and discharging the sucked gas or effusion.

[0043] As Figure 3 and Figure 4As shown, the detachable gas-liquid collection mechanism 2 includes a transparent collection housing 21. Inside the transparent collection housing 21, there is a cylindrical storage cavity 22 with an open bottom end. At the top of the transparent collection housing 21, there are two pipe installation holes 24 that connect the external space and the top end of the cylindrical storage cavity 22. Inside the two pipe installation holes 24, a first medium flow pipe 25 and a first medium discharge pipe 26 are installed in sequence, and both the first medium flow pipe 25 and the first medium discharge pipe 26 have a hollow structure inside. At the bottom opening end of the transparent collection housing 21, a detachable bottom sealing cover 23 is installed. At the center of the bottom end of the bottom sealing cover 23, there is a second medium discharge pipe 28 extending downward. Inside the second medium discharge pipe 28, there is a medium discharge hole 29 that connects the upper surface of the bottom sealing cover 23 and the space below. On one side of the circumferential inner wall of the medium discharge hole 29, there is a horizontally arranged valve rod insertion hole 210. On one side of the second medium discharge pipe 28, there is a first hollow housing 211 that is integrally structured with it and is in a horizontal state. Inside the first hollow housing 211, there is a first component moving cavity 212. Inside the second medium discharge pipe 28, there is a valve rod moving hole 213 corresponding to the valve rod insertion hole 210. Inside the first hollow housing 211, within the first component moving cavity 212, there is an inner moving plate 214 that can move axially along the first component moving cavity 212. At one end of the inner moving plate 214, there is a valve rod 215 that can be inserted into the valve rod moving hole 213, the medium discharge hole 29, and the valve rod insertion hole 210. At the other end of the inner moving plate 214, a pull rod 216 is fixedly installed through the corresponding end of the first hollow housing 211. Around the rod body of the pull rod 216 inside the first component moving cavity 212, there is a first spiral spring 217 in a compressed state. At the end of the pull rod 216 outside the first hollow housing 211, a pull plate 27 is fixedly installed. The bottom end of the first medium flow pipe 25 extends to near the bottom end of the cylindrical storage cavity 22, and the bottom end of the first medium discharge pipe 26 extends to near the top end of the cylindrical storage cavity 22. The structural radius of the valve rod 215 is the same as the structural radii of the valve rod moving hole 213 and the valve rod insertion hole 210, and is greater than the structural radius of the medium discharge hole 29.

[0044] As Figure 1 and Figure 2 、 Figure 5 and Figure 6As shown, in order to reduce the occurrence of accident phenomena caused by excessive negative pressure, a variable pressure control mechanism 3 needs to be set up. Inside it, there is a second hollow shell 31 fixedly installed at the top of the first medium discharge pipe 26 and with a hollow internal structure, a fourth medium flow pipe 37 fixedly installed at the top of the second hollow shell 31 and communicating with the internal structure of the second hollow shell 31, and an elastic air film 36 placed inside the second hollow shell 31 and reducing the gas flow aperture when affected by air pressure negative pressure. The gas will be extracted through the central area of the elastic air film 36. When the pumping pressure is greater than the deformation strength of the elastic air film 36, the external atmospheric pressure will force the elastic air film 36 to have an inner diameter closing phenomenon, thereby reducing the gas flow rate, and further alleviating the gas pressure on the patient's abdominal cavity caused by negative pressure. When a negative pressure overload phenomenon occurs, under the action of the external atmospheric pressure, the inner hole of the elastic air film 36 will be completely closed, thereby blocking the upward extraction of gas, and further preventing the occurrence of medical accidents caused by too small air pressure inside the patient's abdominal cavity.

[0045] As Figure 5 and Figure 6 shown, the variable pressure control mechanism 3 includes a second hollow shell 31. Inside the second hollow shell 31, there is a second component activity cavity 32. At the bottom of the second component activity cavity 32, there is a second medium flow pipe 33 fixedly connected to the top end of the first medium discharge pipe 26. At the top of the second hollow shell 31, there is a third medium flow pipe 34 with a hollow internal structure fixedly installed. On the circumferential wall thickness of the second hollow shell 31, there are a plurality of gas compensation ports 35 communicating the external space and the outer circumferential surface of the second component activity cavity 32. Inside the second hollow shell 31 in the second component activity cavity 32, there is an embedded elastic air film 36. The elastic air film 36 is arranged in an annular cylinder structure. At the top of the third medium flow pipe 34, there is a fourth medium flow pipe 37 fixedly installed and internally communicating with the internal structure of the third medium flow pipe 34. On the circumferential wall thickness of the fourth medium flow pipe 37, there is a first medium flow hole 38. The bottom end of the elastic air film 36 is embedded in the bottom structure of the second component activity cavity 32, and the top end is embedded in the top structure of the second component activity cavity 32.

[0046] As Figure 1 、 Figure 2 、 Figure 7 and Figure 8As shown, in order to prevent the inner diameter of the elastic air film 36 from being damaged when the air extraction device continues to operate after being completely closed, an elastic anti-overload mechanism 4 needs to be provided. Inside it, there is a third hollow outer shell 41 fixedly installed around the fourth medium flow pipe 37 and hollow inside, a movable valve plate 46 placed inside the third hollow outer shell 41 and capable of allowing outside gas to enter the first medium flow hole 38 when moving, and a second helical spring 47 placed inside the third hollow outer shell 41 and capable of exerting an elastic damping effect on the movable valve plate 46. When the air extraction device is started, the gas inside the device will be extracted. When the inner diameter of the elastic air film 36 is completely closed, the suction force formed by the air extraction device will increase inside the fourth medium flow pipe 37. At the same time, the gas suction force will act on the end of the movable valve plate 46. When the gas suction force is greater than the elastic strength of the second helical spring 47, the movable valve plate 46 will be displaced, and outside gas will be timely supplemented into the fourth medium flow pipe 37 along the second gas flow hole 45, the movable gap of the movable valve plate 46, the annular embedding groove 48, the first gas flow hole 44, and the first medium flow hole 38, thereby alleviating the influence of negative pressure on the elastic air film 36. After the staff observes the gas entering along the second gas flow hole 45, they can timely close the air extraction device, thereby preventing the inner diameter of the elastic air film 36 from being damaged when the air extraction device continues to operate after being completely closed.

[0047] As Figure 7 and Figure 8As shown in the figure, the elastic overload prevention mechanism 4 includes a third hollow housing 41. Inside the third hollow housing 41, there is a third component activity chamber 411. One end of the third hollow housing 41 is provided with a docking pipe 42 integrally structured with it. One end of the docking pipe 42 is provided with a fixing collar 43 integrally structured with it. The fixing collar 43 is fixedly installed around the periphery of the fourth medium flow pipe 37. Inside the fixing collar 43 and the docking pipe 42, there is a first gas flow hole 44 connecting one end of the third component activity chamber 411 and the first medium flow hole 38. The other end of the third hollow housing 41 is provided with a second gas flow hole 45 connecting the outside space and the other end of the third component activity chamber 411. Inside the third component activity chamber 411, there is an activity valve plate 46 that can move axially along the third component activity chamber 411. At one end of the activity valve plate 46 facing the first gas flow hole 44, there is a second helical spring 47 in a compressed state. The circumferential surface of the activity valve plate 46 is provided with a plurality of gas flow grooves 49 with an inward concave structure, which can enable gas to flow axially along the gas flow grooves 49. At the end of the activity valve plate 46 facing the second gas flow hole 45, there is an inward concave annular embedding groove 48. Inside the annular embedding groove 48 of the activity valve plate 46, there is a fixed annular sealing ring 410. The elastic strength of the second helical spring 47 is not less than the deformation strength required for the elastic gas film 36 to be completely closed. The thickness of the annular sealing ring 410 is greater than the depth of the annular embedding groove 48. The structural radius of the inner ring of the annular sealing ring 410 is greater than the structural radius of the second gas flow hole 45, and the structural radius of the outer ring of the annular sealing ring 410 is less than the distance between the gas flow groove 49 and the axis of the activity valve plate 46.

[0048] The working process of the technical solution provided by the present invention is as follows:

[0049] During use, the bottom support base 1 is fixedly installed in the working area. Then, the top end of the first medium flow pipe 25 is docked with a straw for absorbing gas or effusion in the patient's abdominal cavity. Then, the fourth medium flow pipe 37 is docked with the air extraction port of an air extraction device through a flange, and the air extraction device is started.

[0050] Due to the internal gas being extracted, the effusion will be sucked into the inside of the cylindrical storage cavity 22 and stored inside the cylindrical storage cavity 22.

[0051] The gas will be extracted through the central region of the elastic gas film 36. When the extraction pressure is greater than the deformation strength of the elastic gas film 36, the external atmospheric pressure will force the inner diameter of the elastic gas film 36 to close, thereby reducing the gas flow rate, and then alleviating the gas pressure in the patient's abdominal cavity caused by the negative pressure. When a negative pressure overload occurs, under the action of the external atmospheric pressure, the inner hole of the elastic gas film 36 will be completely closed, thus blocking the upward extraction of the gas.

[0052] When the inner diameter of the elastic gas film 36 is completely closed, the suction force formed by the extraction device will increase inside the fourth medium flow pipe 37. At the same time, the gas suction force will act on the end of the movable valve plate 46. When the gas suction force is greater than the elastic strength of the second helical spring 47, it will cause the movable valve plate 46 to displace. The external gas will be replenished into the fourth medium flow pipe 37 in a timely manner along the second gas flow hole 45, the movable gap of the movable valve plate 46, the annular embedding groove 48, the first gas flow hole 44, and the first medium flow hole 38, thereby alleviating the impact of the negative pressure on the elastic gas film 36. After the staff observes that the gas enters along the second gas flow hole 45, they can close the extraction device in a timely manner.

[0053] After the work is completed, pull the pull plate 27 outwards so that the valve rod 215 withdraws from the medium discharge hole 29, and the accumulated liquid will be discharged downward through the medium discharge hole 29. When cleaning is required, remove the bottom sealing cover 23 to clean the remaining accumulated liquid, thereby realizing the functions of pre-storing and discharging the extracted gas or accumulated liquid.

[0054] The present invention covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present invention. To enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits are not described in detail to avoid unnecessary confusion to the essence of the present invention.

[0055] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A gastrointestinal fluid decompression device for gastrointestinal surgery, comprising a bottom support seat for supporting, characterized in that: It also includes a detachable gas-liquid collection mechanism and a variable pressure control mechanism, wherein the detachable gas-liquid collection mechanism includes a transparent collection shell installed in the middle of the bottom support seat, a No. 1 medium discharge pipe installed on the top of the transparent collection shell, a No. 2 medium discharge pipe installed on the bottom of the transparent collection shell, and a valve stem, and the interior of the transparent collection shell stores the sucked medium; The variable pressure control mechanism includes a No. 2 hollow shell fixedly installed on the top of the No. 1 medium discharge pipe and having a hollow internal structure, a No. 4 medium flow pipe fixedly installed on the top of the No. 2 hollow shell and connected to the internal structure of the No. 2 hollow shell, and an elastic air film placed inside the No. 2 hollow shell.

2. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 1, characterized in that: The detachable gas-liquid collection mechanism also includes a transparent collection shell, a cylindrical storage cavity is arranged inside the transparent collection shell, a pipe installation hole is arranged at the top of the transparent collection shell, a No. 1 medium flow pipe and a No. 1 medium discharge pipe are installed in the two pipe installation holes in sequence, a bottom sealing cover is detachably installed at the bottom opening end of the transparent collection shell, a No. 2 medium discharge pipe is arranged at the bottom end of the bottom sealing cover, a discharge hole is arranged inside the No. 2 medium discharge pipe, and a valve stem is inserted in the medium discharge hole.

3. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 2, characterized in that: The detachable gas-liquid collecting mechanism also includes a No. 1 hollow shell, a No. 1 hollow shell is arranged on one side of the No. 2 medium discharge pipe, a No. 1 component movable cavity is arranged inside the No. 1 hollow shell, an inner movable plate is placed inside the No. 1 component movable cavity, a valve stem which can be inserted into the medium discharge hole is arranged at one end of the inner movable plate, a pull rod which passes through the corresponding end of the No. 1 hollow shell is fixedly installed at the other end of the inner movable plate, a No. 1 coil spring in a compressed state is placed on the outer periphery of the rod body of the pull rod located inside the No. 1 component movable cavity, and a pull plate is fixedly installed at one end of the pull rod located outside the No. 1 hollow shell.

4. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 2, characterized in that: The bottom end of the No. 1 medium flow pipe extends to the vicinity of the bottom end of the columnar storage cavity, and the bottom end of the No. 1 medium discharge pipe extends to the vicinity of the top end of the columnar storage cavity.

5. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 4, characterized in that: The variable pressure control mechanism includes a No. 2 hollow shell, a No. 2 component active cavity is arranged inside the No. 2 hollow shell, a No. 2 medium flow pipe fixed to and connected with the top of the No. 1 medium discharge pipe is arranged at the bottom of the No. 2 component active cavity, a No. 3 medium flow pipe is fixedly installed on the top of the No. 2 hollow shell, a plurality of gas compensation ports connecting the external space and the outer circumferential surface of the No. 2 component active cavity are arranged at the circumferential wall thickness of the No. 2 hollow shell, an elastic gas film is embedded in the active cavity of the No. 2 component, a No. 4 medium flow pipe connected with the internal structure of the No. 3 medium flow pipe is fixedly installed on the top of the No. 3 medium flow pipe, and a No. 1 medium flow hole is arranged at the circumferential wall thickness of the No. 2 hollow shell.

6. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 5, characterized in that: The bottom end of the elastic air membrane is embedded in the bottom structure of the active cavity of the second component, and the top end is embedded in the top structure of the active cavity of the second component.

7. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 6, characterized in that: It also includes an elastic anti-overload mechanism, which is internally provided with a No. 3 hollow shell which is fixedly installed on the periphery of the No. 4 medium flow pipe and is hollow inside, a movable valve plate which is placed inside the No. 3 hollow shell and can allow external gas to enter the No. 1 medium flow hole when moving, and a No. 2 coil spring which is placed inside the No. 3 hollow shell and can have an elastic damping effect on the movable valve plate.

8. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 7, characterized in that: The elastic anti-overload mechanism includes a No. 3 hollow shell, a No. 3 component active cavity is arranged inside the No. 3 hollow shell, a docking pipe is arranged at one end of the No. 3 hollow shell, a fixing ring is arranged at one end of the docking pipe, the fixing ring is fixedly installed on the periphery of the No. 4 medium flow pipe, a No. 1 gas flow hole connecting one end of the No. 3 component active cavity and the No. 1 medium flow hole is arranged inside the fixing ring and the docking pipe, a No. 2 gas flow hole connecting the external space and the other end of the No. 3 component active cavity is arranged at the other end of the No. 3 hollow shell, a movable valve plate is arranged inside the No. 3 component active cavity, a No. 2 coil spring in a compressed state is arranged at one end of the movable valve plate, a plurality of gas flow grooves with an inwardly concave structure are arranged on the circumferential surface of the movable valve plate, an annular embedded groove with an inwardly concave structure is arranged at the end of the movable valve plate facing the No. 2 gas flow hole, and an annular sealing ring is fixedly installed on the movable valve plate inside the annular embedded groove.

9. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 8, characterized in that: The elastic strength of the No. 2 coil spring is not less than the deformation strength required by the elastic air membrane when it is fully closed.

10. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 9, characterized in that: The thickness of the annular sealing ring is greater than the depth of the annular embedded groove, the structural radius of the inner ring of the annular sealing ring is greater than the structural radius of the No. 2 gas flow hole, and the structural radius of the outer ring of the annular sealing ring is smaller than the distance between the gas flow groove and the axial center line of the movable valve plate.

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