A device for decompressing gastrointestinal fluid in gastrointestinal surgery

Abstract

This invention provides a gastrointestinal fluid decompression device for gastrointestinal surgery, belonging to the field of medical devices. It includes a detachable gas-liquid collection mechanism and a variable pressure control mechanism. This invention utilizes the deformation phenomenon of an elastic gas membrane under the action of gas to buffer the flowing gas pressure. This buffering effectively reduces the surgical risk rate caused by excessive instantaneous gas pressure. Simultaneously, once the negative pressure value is overloaded, the elastic gas membrane will completely close its pores under the action of external atmospheric pressure, thereby blocking the gas flow path and preventing more serious surgical accidents caused by negative pressure overload.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more specifically, to a device for decompressing gastrointestinal fluid in gastrointestinal surgery. Background Technology

[0002] Currently used gastrointestinal decompression devices have a simple structure. They use negative pressure suction to remove fluid from the patient's abdominal cavity. Because the negative pressure suction is continuous, even after the fluid in the patient's abdominal cavity has been temporarily removed, the negative pressure suction function of the gastrointestinal decompression device continues to suction the patient's abdominal cavity. Over time, this negative pressure suction can damage the patient's abdominal cavity and increase the pain experienced during treatment.

[0003] To this end, Chinese Patent Publication No. CN215537074U discloses a gastrointestinal fluid decompression device for clinical gastrointestinal surgery. In use, the size of the internal hole of the fluid inlet is controlled by a blocking block connected to the bottom of the movable block, thereby controlling the suction force of the aspirator. This prevents the patient from experiencing pain due to excessive suction. Furthermore, when the blocking block completely blocks the fluid inlet, it can prevent the backflow of gastrointestinal fluid. During use, the liquid level inside the aspirator can be observed through a liquid level observation window. When the liquid level exceeds the standard, the liquid pump can be activated to promptly remove the gastrointestinal fluid, further preventing the backflow of gastrointestinal fluid.

[0004] However, in actual operation, the gastrointestinal fluid decompression device mentioned above for clinical gastrointestinal surgery only reduces the instantaneous negative pressure value by controlling the size of the vent. As the working time increases, it can still lead to negative pressure overload. Therefore, this gastrointestinal fluid decompression device for clinical gastrointestinal surgery still has the risk of excessive negative pressure attraction. Summary of the Invention

[0005] In view of 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 solution:

[0007] A gastrointestinal fluid decompression device for gastrointestinal surgery includes a bottom support base for support; a detachable gas-liquid collection mechanism, which internally houses a transparent collection shell for storing the aspirated medium and installed in the middle of the bottom support base, a first medium discharge pipe installed on top of the transparent collection shell for discharging gas from inside the transparent collection shell, a second medium discharge pipe installed at the bottom of the transparent collection shell for discharging the aspirated medium, and a valve stem for controlling the flow state of the aspirated medium; and a variable pressure control mechanism, which internally houses a second hollow shell fixedly installed on top of the first medium discharge pipe and having a hollow internal structure, a fourth medium flow pipe fixedly installed on top of the second hollow shell and communicating with the internal structure of the second hollow shell, and an elastic gas membrane placed inside the second hollow shell that reduces the gas flow aperture when subjected to negative pressure.

[0008] Optionally, the detachable gas-liquid collection mechanism includes a transparent collection shell. Inside the transparent collection shell is a cylindrical storage cavity with an open bottom. At the top of the transparent collection shell are two pipe mounting holes connecting the external space and the top of the cylindrical storage cavity. A first medium flow pipe and a first medium discharge pipe are sequentially installed inside the two pipe mounting holes, and both the first medium flow pipe and the first medium discharge pipe are hollow. A detachable bottom sealing cap is installed at the bottom opening of the transparent collection shell. A second medium discharge pipe extending downwards is located at the center of the bottom end of the bottom sealing cap. Inside the second medium discharge pipe is a medium discharge hole connecting the upper surface of the bottom sealing cap and the space below. A horizontal valve stem insertion hole is located on one side of the inner circumference of the medium discharge hole. A first hollow outer shell, integrally formed and horizontal, is provided on one side of the second medium discharge pipe. The first hollow outer shell contains a first component movable cavity. The second medium discharge pipe contains a valve stem movable hole corresponding to the valve stem insertion hole. An inner movable plate, capable of axial movement along the first component movable cavity, is placed inside the first hollow outer shell. A valve stem, capable of being inserted into the valve stem movable hole, the medium discharge hole, and the valve stem insertion hole, is placed at one end of the inner movable plate. A pull rod, penetrating the corresponding end of the first hollow outer shell, is fixedly installed at the other end of the inner movable plate. A first helical spring, in a compressed state, is sleeved around the pull rod inside the first component movable cavity. A pull plate is fixedly installed at the end of the pull rod outside the first hollow outer shell.

[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 radius of the valve stem movable hole and the valve stem insertion hole, and is larger than the structural radius of the medium discharge hole.

[0011] Optionally, the modified pressure control mechanism includes a second hollow outer shell, inside which is a second component movable cavity. At the bottom of the second component movable cavity is a second medium flow pipe fixed and connected to the top of a first medium discharge pipe. At the top of the second hollow outer shell is a third medium flow pipe with a hollow internal structure. Multiple gas compensation ports connecting the external space and the outer circumferential surface of the second component movable cavity are provided along the circumferential wall thickness of the second hollow outer shell. An elastic gas film is embedded inside the second component movable cavity within the second hollow outer shell. At the top of the third medium flow pipe is a fourth medium flow pipe, internally connected to the internal structure of the third medium flow pipe. A first medium flow hole is provided along 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 movable cavity of the second component, and the top end is embedded in the top structure of the movable cavity of the second component.

[0013] Optionally, it also includes an elastic overload protection mechanism, which is internally equipped with a hollow shell No. 3 that is fixedly installed on the periphery of the No. 4 medium flow pipe and is hollow inside, a movable valve plate that is placed inside the hollow shell No. 3 and allows external gas to enter the No. 1 medium flow hole when it moves, and a helical spring No. 2 that is placed inside the hollow shell No. 3 and can provide elastic damping for the movable valve plate.

[0014] Optionally, the elastic overload protection mechanism includes a third hollow shell, inside which is a third component movable cavity. One end of the third hollow shell is provided with an integrally structured docking pipe, and one end of the docking pipe is provided with an integrally structured fixing collar. The fixing collar is fixedly installed around the fourth medium flow pipe. Inside the fixing collar and the docking pipe, there is a first gas flow hole connecting one end of the third component movable cavity and a first medium flow hole. The other end of the third hollow shell is provided with a second gas flow hole connecting the external space and the other end of the third component movable cavity. Inside the third component movable cavity, a movable valve plate capable of moving axially along the third component movable cavity is placed. At the end of the movable valve plate facing the first gas flow hole, a second helical spring in a compressed state is placed. The circumferential surface of the movable valve plate is provided with multiple concave gas flow grooves. At the end of the movable valve plate facing the second gas flow hole, there is a concave annular embedding groove. 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 embedded 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] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0018] In the above scheme, the deformation phenomenon of the elastic air membrane when subjected to gas can buffer the flowing air pressure. Buffering can effectively reduce the surgical risk rate caused by excessive instantaneous air pressure. At the same time, once the negative pressure value is overloaded, the elastic air membrane will completely close its aperture under the action of external atmospheric pressure, thereby blocking the gas flow path and preventing more serious surgical accidents caused by negative pressure overload.

[0019] By setting up a detachable gas-liquid collection mechanism, the internal gas is extracted and the accumulated liquid is sucked into the cylindrical storage chamber and pre-stored inside the cylindrical storage chamber. Pulling the pull plate outward causes the valve stem to exit the medium discharge hole, and the accumulated liquid will be discharged downward through the medium discharge hole. When cleaning is required, the bottom sealing cover can be removed to clean the remaining accumulated liquid, thereby realizing the functions of pre-storing and discharging extracted gas or accumulated liquid.

[0020] By setting up a variable pressure control mechanism, when the suction pressure is greater than the deformation strength of the elastic air membrane, the external atmospheric pressure will force the elastic air membrane to close its inner diameter, thereby reducing the gas flow and alleviating the negative pressure on the gas pressure inside the patient's abdominal cavity. When a negative pressure overload occurs, the inner hole of the elastic air membrane will completely close under the action of the external atmospheric pressure, thereby blocking the upward extraction of gas and preventing medical accidents caused by excessively low gas pressure inside the patient's abdominal cavity. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

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

[0023] Figure 2 This is a three-dimensional cross-sectional view of the present invention;

[0024] Figure 3This is a perspective cross-sectional view of the detachable gas-liquid collection mechanism in this invention from the main viewpoint.

[0025] Figure 4 This is a perspective cross-sectional view of the detachable gas-liquid collection mechanism in this invention from the right-hand side.

[0026] Figure 5 This is a perspective view of the variable pressure control mechanism in this invention;

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

[0028] Figure 7 This is a three-dimensional cross-sectional view of the elastic overload prevention mechanism in this invention;

[0029] Figure 8 This is a perspective view of the movable valve plate in this invention.

[0030] [Figure Labels]

[0031] 1. Bottom support base;

[0032] 2. Detachable gas-liquid collection mechanism; 21. Transparent collection shell; 22. Cylindrical storage chamber; 23. Bottom sealing cover; 24. Pipe installation hole; 25. No. 1 medium flow pipe; 26. No. 1 medium discharge pipe; 27. Pull plate; 28. No. 2 medium discharge pipe; 29. ​​Medium discharge hole; 210. Valve stem insertion hole; 211. No. 1 hollow shell; 212. No. 1 component movable cavity; 213. Valve stem movable hole; 214. Inner movable plate; 215. Valve stem; 216. Pull rod; 217. No. 1 helical spring;

[0033] 3. Variable pressure control mechanism; 31. Hollow outer shell No. 2; 32. Movable cavity of component No. 2; 33. Medium flow pipe No. 2; 34. Medium flow pipe No. 3; 35. Gas compensation port; 36. Elastic gas film; 37. Medium flow pipe No. 4; 38. Medium flow hole No. 1;

[0034] 4. Elastic overload protection mechanism; 41. Hollow outer shell No. 3; 42. Connecting pipe; 43. Fixing collar; 44. Gas flow hole No. 1; 45. Gas flow hole No. 2; 46. Movable valve plate; 47. Helical spring No. 2; 48. Annular embedded groove; 49. Gas flow groove; 410. Annular sealing ring; 411. Movable cavity of component No. 3.

[0035] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0037] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when describing a specific feature, structure, or characteristic in conjunction with embodiments, the implementation of such feature, structure, or characteristic in conjunction with other embodiments, whether or not explicitly described, should be within the knowledge of those skilled in the art.

[0038] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly 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 a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0039] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0040] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0041] like Figures 1 to 8As shown, this embodiment of the invention provides a gastrointestinal fluid decompression device for gastrointestinal surgery, including a bottom support 1 that provides support. The bottom support 1 is fixedly installed in the working area. The top end of the first medium flow tube 25 is connected to a suction tube for absorbing gas or fluid in the patient's abdominal cavity. The fourth medium flow tube 37 is then connected to the suction port of a suction device.

[0042] like Figures 1 to 4 As shown, in order to realize the pre-storage and discharge functions of the extracted gas or liquid, a detachable gas-liquid collection mechanism 2 is set up. The internal components include a transparent collection shell 21 that can store the extracted medium and is installed in the middle of the bottom support 1; a first medium discharge pipe 26 installed on the top of the transparent collection shell 21 that can discharge the gas inside the transparent collection shell 21 to the outside; a second medium discharge pipe 28 installed on the bottom of the transparent collection shell 21 that can discharge the extracted medium; and a valve stem 215 that can control the flow state of the extracted medium. As the internal gas is extracted, the liquid is sucked into the cylindrical storage cavity 22 and pre-stored inside the cylindrical storage cavity 22. After the operation is completed, the pull plate 27 is pulled outward, so that the valve stem 215 is disengaged from the medium discharge hole 29, and the liquid will be discharged downward through the medium discharge hole 29. When cleaning is required, the bottom sealing cover 23 is removed to clean the remaining liquid, thereby realizing the pre-storage and discharge functions of the extracted gas or liquid.

[0043] like Figure 3 and Figure 4As shown, the detachable gas-liquid collection mechanism 2 includes a transparent collection shell 21. Inside the transparent collection shell 21 is a cylindrical storage cavity 22 with an open bottom. At the top of the transparent collection shell 21 are two pipe mounting holes 24 connecting the external space and the top of the cylindrical storage cavity 22. A first medium flow pipe 25 and a first medium discharge pipe 26 are sequentially installed inside the two pipe mounting holes 24, and both the first medium flow pipe 25 and the first medium discharge pipe 26 are hollow. A detachable bottom sealing cap 23 is installed at the bottom opening of the transparent collection shell 21, and a second medium discharge pipe 28 extending downwards is located at the center of the bottom end of the bottom sealing cap 23. The second medium discharge pipe 28 has a medium discharge hole 29 inside, connecting the upper surface of the bottom sealing cover 23 and the space below. A horizontal valve stem insertion hole 210 is provided on one side of the inner circumference of the medium discharge hole 29. A first hollow outer shell 211, integrally formed with and horizontally positioned, is provided on one side of the second medium discharge pipe 28. A first component movable cavity 212 is provided inside the first hollow outer shell 211. A valve stem movable hole 213, corresponding to the valve stem insertion hole 210, is provided inside the second medium discharge pipe 28. An inner movable plate 214, capable of moving axially along the first component movable cavity 212, is placed inside the first hollow outer shell 211. One end of the inner movable plate 214 is fitted with a valve stem movable hole 213 that can be inserted into the valve stem movable hole 213. The valve stem 215 is located inside the medium discharge hole 29 and the valve stem insertion hole 210. The other end of the inner movable plate 214 is fixedly installed with a pull rod 216 that passes through the corresponding end of the first hollow outer shell 211. A first helical spring 217 in a compressed state is placed around the rod body located inside the first component movable cavity 212. A pull plate 27 is fixedly installed at the end of the pull rod 216 located outside the first hollow outer shell 211. The bottom end of the first medium flow pipe 25 extends to the vicinity of the bottom end of the cylindrical storage cavity 22. The bottom end of the first medium discharge pipe 26 extends to the vicinity of the top end of the cylindrical storage cavity 22. The structural radius of the valve stem 215 is consistent with the structural radius of the valve stem movable hole 213 and the valve stem insertion hole 210, and is larger than the structural radius of the medium discharge hole 29.

[0044] like Figure 1 and Figure 2 , Figure 5 and Figure 6As shown, in order to reduce the occurrence of accidents caused by excessive negative pressure, a variable pressure control mechanism 3 needs to be set up. This mechanism includes a second hollow shell 31 fixedly installed on the top of the first media discharge pipe 26 and having a hollow internal structure; a fourth media flow pipe 37 fixedly installed on the top of the second hollow shell 31 and connected to its internal structure; and an elastic gas membrane 36 placed inside the second hollow shell 31 that reduces the gas flow aperture when subjected to negative pressure. Gas is drawn out through the central area of ​​the elastic gas membrane 36. When the suction pressure exceeds the deformation strength of the elastic gas membrane 36, the external atmospheric pressure forces the elastic gas membrane 36 to close its inner diameter, thereby reducing the gas flow and alleviating the negative pressure on the patient's abdominal cavity. In the event of negative pressure overload, the inner hole of the elastic gas membrane 36 will completely close under the action of external atmospheric pressure, thus blocking the upward extraction of gas and preventing medical accidents caused by excessively low pressure in the patient's abdominal cavity.

[0045] like Figure 5 and Figure 6 As shown, the variable pressure control mechanism 3 includes a second hollow outer shell 31. Inside the second hollow outer shell 31 is a second component movable cavity 32. At the bottom of the second component movable cavity 32 is a second medium flow pipe 33, which is fixed to and communicates with the top of the first medium discharge pipe 26. At the top of the second hollow outer shell 31 is a third medium flow pipe 34, which has a hollow interior. Multiple gas compensation ports 35, communicating with the external space and the outer circumferential surface of the second component movable cavity 32, are provided along the circumferential wall thickness of the second hollow outer shell 31. The second hollow outer shell 31 has an elastic gas membrane 36 embedded inside the second component movable cavity 32. The elastic gas membrane 36 is arranged in a ring-shaped structure. The top end of the third medium flow pipe 34 is fixedly installed with a fourth medium flow pipe 37 that communicates with the internal structure of the third medium flow pipe 34. The fourth medium flow pipe 37 has a first medium flow hole 38 at the circumferential wall thickness. The bottom end of the elastic gas membrane 36 is embedded in the bottom structure of the second component movable cavity 32, and the top end is embedded in the top structure of the second component movable cavity 32.

[0046] like Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, to prevent damage to the elastic gas membrane 36 caused by the continued operation of the pumping device after the inner diameter of the elastic gas membrane 36 is fully closed, an elastic overload protection mechanism 4 is required. This mechanism includes a hollow outer shell 41 (fixed around the fourth medium flow pipe 37 and hollow inside), a movable valve plate 46 (placed inside the third hollow outer shell 41 and allowing external gas to enter the first medium flow hole 38 during movement), and a spiral spring 47 (placed inside the third hollow outer shell 41 and providing elastic damping for the movable valve plate 46). When the pumping device is activated, the gas inside the device is extracted. When the inner diameter of the elastic gas membrane 36 is fully closed, the suction force generated by the pumping device will... As the internal volume of the first medium flow pipe 37 increases, the gas suction will act on the end of the movable valve plate 46. When the gas suction exceeds the elastic strength of the second helical spring 47, the movable valve plate 46 will shift. External gas will then be supplied into the interior of the fourth medium flow pipe 37 in a timely manner through the second gas flow hole 45, the movable gap of the movable valve plate 46, the annular embedded groove 48, the first gas flow hole 44, and the first medium flow hole 38. This will alleviate the negative pressure on the elastic gas membrane 36. Once the operator observes the gas entering through the second gas flow hole 45, they can promptly shut off the pumping equipment to prevent damage to the elastic gas membrane 36 caused by the pumping equipment continuing to operate after the inner diameter of the elastic gas membrane 36 is completely closed.

[0047] like Figure 7 and Figure 8As shown, the elastic overload protection mechanism 4 includes a third hollow shell 41. Inside the third hollow shell 41 is a third component movable cavity 411. One end of the third hollow shell 41 is provided with an integrally formed connecting pipe 42. One end of the connecting pipe 42 is provided with an integrally formed fixing collar 43. The fixing collar 43 is fixedly installed around the fourth medium flow pipe 37. Inside the fixing collar 43 and the connecting pipe 42 is a first gas flow hole 44 connecting one end of the third component movable cavity 411 and a first medium flow hole 38. The other end of the third hollow shell 41 is provided with a second gas flow hole 45 connecting the external space and the other end of the third component movable cavity 411. Inside the third component movable cavity 411 is a movable valve plate 46 capable of moving axially along the third component movable cavity 411. The movable valve plate 46 faces the first gas flow hole 38. A second helical spring 47 in a compressed state is placed at one end of the flow hole 44. The circumferential surface of the movable valve plate 46 is provided with a plurality of concave gas flow grooves 49, which allow gas to flow axially along the gas flow grooves 49. The movable valve plate 46 is provided with a concave annular embedded groove 48 at the end facing the second gas flow hole 45. An annular sealing ring 410 is fixedly installed inside the annular embedded groove 48 on the movable valve plate 46. 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 fully closed. The thickness of the annular sealing ring 410 is greater than the depth of the annular embedded 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 movable valve plate 46.

[0048] The workflow of the technical solution provided by this invention is as follows:

[0049] When in use, fix the bottom support 1 in the working area, then connect the top of the first medium flow tube 25 to the suction tube for absorbing gas or fluid in the patient's abdominal cavity, and then connect the fourth medium flow tube 37 to the suction port of a suction device through the flange, and start the suction device.

[0050] As the internal gas is extracted, the accumulated liquid is drawn into the cylindrical storage cavity 22 and pre-stored inside the cylindrical storage cavity 22.

[0051] Gas is drawn out through the central area of ​​the elastic air membrane 36. When the pressure of the drawn gas is greater than the deformation strength of the elastic air membrane 36, the external atmospheric pressure will force the elastic air membrane 36 to close its inner diameter, thereby reducing the gas flow and relieving the negative pressure on the gas pressure inside the patient's abdominal cavity. When a negative pressure overload occurs, the inner hole of the elastic air membrane 36 will be completely closed under the action of the external atmospheric pressure, thereby blocking the upward extraction of gas.

[0052] When the inner diameter of the elastic gas membrane 36 is completely closed, the suction force generated by the pumping 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. The external gas will be replenished into the interior of the fourth medium flow pipe 37 in a timely manner through the second gas flow hole 45, the movable gap of the movable valve plate 46, the annular embedded groove 48, the first gas flow hole 44, and the first medium flow hole 38, thereby alleviating the negative pressure on the elastic gas membrane 36. After the staff observes the gas entering through the second gas flow hole 45, they can shut off the pumping device in time.

[0053] After the work is completed, pull the pull plate 27 outward so that the valve stem 215 exits 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 residual liquid, thereby realizing the functions of pre-storage and discharge of extracted gas or accumulated liquid.

[0054] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for decompressing gastrointestinal fluid in gastrointestinal surgery, comprising a bottom support base for support, characterized in that, It also includes a detachable gas-liquid collection mechanism and a variable pressure control mechanism. The detachable gas-liquid collection mechanism includes a transparent collection shell installed in the middle of the bottom support, a first medium discharge pipe installed on the top of the transparent collection shell, a second medium discharge pipe installed on the bottom of the transparent collection shell, and a valve stem. The interior of the transparent collection shell stores the sucked-out medium. The modified pressure control mechanism includes a second hollow outer shell that is fixedly installed on the top of the first medium discharge pipe and has a hollow internal structure, a fourth medium flow pipe that is fixedly installed on the top of the second hollow outer shell and communicates with the internal structure of the second hollow outer shell, and an elastic gas membrane placed inside the second hollow outer shell. The modified pressure control mechanism includes a second hollow outer shell, inside which is a second component movable cavity. At the bottom of the second component movable cavity is a second medium flow pipe that is fixed and connected to the top of the first medium discharge pipe. At the top of the second hollow outer shell is a third medium flow pipe. At the circumferential wall thickness of the second hollow outer shell are multiple gas compensation ports that connect to the external space and the outer circumferential surface of the second component movable cavity. An elastic gas film is embedded inside the second component movable cavity. At the top of the third medium flow pipe is a fourth medium flow pipe that connects to the internal structure of the third medium flow pipe. At the circumferential wall thickness of the fourth medium flow pipe is a first medium flow hole. It also includes an elastic overload protection mechanism, which internally comprises a hollow outer shell (No. 3) fixedly installed around the fourth medium flow pipe and having a hollow interior; a movable valve plate placed inside the hollow outer shell that allows external gas to enter the first medium flow hole when moved; and a helical spring (No. 2) placed inside the hollow outer shell that provides elastic damping for the movable valve plate. The hollow outer shell has a movable cavity for a third component inside. One end of the hollow outer shell has a connecting pipe, and one end of the connecting pipe has a fixing collar. The fixing collar is fixedly installed around the fourth medium flow pipe. The fixing collar and the connecting pipe have a first gas flow hole connecting one end of the movable cavity for the third component to the first medium flow hole. The other end of the hollow outer shell has a second gas flow hole connecting the external space to the other end of the movable cavity for the third component.

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. The interior of the transparent collection shell is provided with a cylindrical storage cavity. The top of the transparent collection shell is provided with a pipe installation hole. A first medium flow pipe and a first medium discharge pipe are installed sequentially inside the two pipe installation holes. A bottom sealing cap is detachably installed at the bottom opening of the transparent collection shell. A second medium discharge pipe is provided at the bottom end of the bottom sealing cap. A medium discharge hole is provided inside the second medium discharge pipe, and a valve stem is inserted into the medium discharge hole.

3. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 2, characterized in that, The detachable gas-liquid collection mechanism also includes a first hollow shell. A first hollow shell is provided on one side of the second medium discharge pipe. A first component movable cavity is provided inside the first hollow shell. An inner movable plate is placed inside the first component movable cavity. A valve stem that can be inserted into the medium discharge hole is provided at one end of the inner movable plate. A pull rod that passes through the corresponding end of the first hollow shell is fixedly installed at the other end of the inner movable plate. A first helical spring in a compressed state is placed around the rod body located inside the first component movable cavity. A pull plate is fixedly installed at the end of the pull rod located outside the first hollow shell.

4. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 2, characterized in that, 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 first medium discharge pipe extends to near the top end of the cylindrical storage cavity.

5. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 4, characterized in that, The bottom end of the elastic air film is embedded in the bottom structure of the movable cavity of the second component, and the top end is embedded in the top structure of the movable cavity of the second component.

6. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 5, characterized in that, A movable valve plate is installed inside the movable cavity of component number three. A second helical spring in a compressed state is installed at one end of the movable valve plate. Multiple concave gas flow grooves are provided on the circumferential surface of the movable valve plate. An annular embedded groove with a concave structure is provided at the end of the movable valve plate facing the second gas flow hole. An annular sealing ring is fixedly installed inside the annular embedded groove of the movable valve plate.

7. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 6, characterized in that, 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.

8. The gastrointestinal fluid decompression device for gastrointestinal surgery according to claim 7, 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 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.

Images