Pneumoperitoneum machine and low-pressure gas circuit manifold assembly thereof

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses a pneumoperitoneum machine and a low-pressure gas circuit manifold assembly thereof. The low-pressure gas circuit manifold assembly of the pneumoperitoneum machine comprises an integrated manifold body, the manifold body is provided with a gas inlet and a gas outlet, a gas channel is formed in the manifold body, and the gas channel is communicated with the gas inlet and the gas outlet; and the at least two valve bodies are arranged outside the manifold main body and are communicated with the gas channel. According to the low-pressure gas path manifold assembly of the pneumoperitoneum machine, the integrated manifold body is arranged, the at least two valve bodies are arranged outside the manifold body and communicate with each other through the gas channel in the manifold body, that is, the at least two valve bodies are integrated on the manifold body and do not need to be connected through a pipeline; therefore, the low-pressure gas path manifold main body assembly is small in size and convenient to install and maintain.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to an insufflator and its low-pressure airway manifold assembly. Background Technology

[0002] An insufflator is a specialized device used in laparoscopic surgery to establish and maintain pneumoperitoneum. It allows medical supplies to be infused into the abdominal cavity. Gas is used to separate the abdominal wall and abdominal organs, forming a surgical space. When the predetermined pressure is reached, the gas intake can be stopped automatically, and a certain amount of gas is maintained to keep the abdominal cavity at the predetermined pressure.

[0003] Depending on the specific needs, the low-pressure air circuit control module of an insufflator varies in structure, including differences in air circuit connection methods and the selection of electronic components. For various low-pressure air circuit control modules, all components are connected via pipelines, resulting in a complex structure, large overall size, and inconvenient installation and maintenance. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an insufflator and its low-pressure air manifold assembly. The structural design of the insufflator and its low-pressure air manifold assembly can effectively solve the problems of large size and inconvenient installation and maintenance of the low-pressure air control module.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A low-pressure airway manifold assembly for an insufflator includes:

[0007] An integrated manifold body, the manifold body having an air inlet and an air outlet, and a gas channel formed inside the manifold body, the gas channel being connected to the air inlet and the air outlet respectively;

[0008] At least two valve bodies are located outside the manifold body and are connected to the gas passage.

[0009] Optionally, in the above-mentioned low-pressure gas manifold assembly, the valve body includes a proportional valve, a pressure relief valve, an on / off valve, and a low-pressure safety valve, and the gas passage includes:

[0010] The air intake channel has one end connected to the air intake port and the other end connected to the inlet of the proportional valve.

[0011] The first flow channel is connected at one end to the outlet of the proportional valve and at the other end to the inlet of the pressure relief valve.

[0012] The second flow channel is sequentially connected to the outlet of the proportional valve, the inlet and outlet of the on / off valve, the inlet of the low-pressure safety valve, and the air outlet.

[0013] Optionally, in the above-mentioned low-pressure manifold assembly, the intake passage extends along a first direction, the first flow channel extends along a second direction, the second flow channel includes a front part and a rear part that are connected, the front part extends along the first direction, the rear part extends along the second direction, and the on / off valve and the low-pressure safety valve are respectively connected to the rear part;

[0014] Wherein, the first direction and the second direction form an angle within a set range.

[0015] Optionally, in the above-mentioned low-pressure gas manifold assembly, the proportional valve, the pressure relief valve, and the on / off valve are all located on the first surface of the manifold body, the low-pressure safety valve is located on the second surface of the manifold body, the air outlet is located on the third surface of the manifold body, and the air inlet is located on the fourth surface of the manifold body.

[0016] The second surface, the third surface, and the fourth surface are all adjacent to the first surface, and they are oriented differently.

[0017] Optionally, in the above-mentioned low-pressure gas manifold assembly, the third surface is further provided with a silencer, and the inlet of the silencer is connected to the outlet of the pressure relief valve.

[0018] Optionally, in the above-mentioned low-pressure gas manifold assembly, the valve body is disposed on the first surface of the manifold body; the manifold body is also provided with at least one hose connector for connecting a sensor, and the hose connector is in communication with the gas passage; the first surface is also provided with a fixing frame, the fixing frame is provided with a support portion for supporting the hose connected to the hose connector, the support portion is spaced apart from the outer wall surface of the manifold body and spaced apart from the valve body.

[0019] Optionally, in the above-mentioned low-pressure gas manifold assembly, the hose connector is located on the first surface of the manifold body.

[0020] Optionally, in the above-mentioned low-pressure gas manifold assembly, the gas channel is provided with a receiving cavity, and the receiving cavity is provided with a filter element; the manifold body is also provided with at least one hose connector for connecting a sensor, and the hose connector is in communication with the gas channel; the receiving cavity is located in the gas channel such that the gas flowing out of the manifold body from the hose connector has been filtered by the filter element.

[0021] Optionally, in the above-mentioned low-pressure gas manifold assembly, the outer wall surface of the manifold body is provided with an opening communicating with the accommodating cavity, the opening is provided with a sealing component, and the sealing component is detachably connected to the manifold body to open or close the opening.

[0022] The low-pressure air manifold assembly for an insufflator provided in this application includes an integral manifold body with an air inlet and an air outlet. A gas passage is formed within the manifold body, and the gas passage is connected to the air inlet and the air outlet, respectively. The low-pressure air manifold assembly also includes at least two valve bodies located outside the manifold body and connected to the gas passage.

[0023] The low-pressure gas manifold assembly of the pneumoperitoneum machine provided in this application is designed with an integrated manifold body and at least two valve bodies located on the outside of the manifold body and connected through a gas channel inside the manifold body. In other words, at least two valve bodies are integrated into the manifold body without the need for pipeline connection. Therefore, the low-pressure gas manifold body assembly is small in size and convenient for installation and maintenance.

[0024] To achieve the above objectives, this application also provides an insufflator, which includes any of the aforementioned low-pressure airway manifold assemblies. Since the aforementioned low-pressure airway manifold assembly has the above-mentioned technical effects, the insufflator having this low-pressure airway manifold assembly should also have the corresponding technical effects. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of an insufflator according to a specific embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the airway of an insufflator.

[0028] Figure 3 This is a schematic diagram of the structure of a low-pressure gas manifold assembly according to a specific embodiment of this application;

[0029] Figure 4 This is a schematic cross-sectional view of the low-pressure gas manifold assembly.

[0030] Figure label:

[0031] 10 - Low-pressure manifold assembly;

[0032] 1-Manifold body; 2-Proportional valve; 3-Pressure relief valve; 4-On / off valve; 5-Low-pressure safety valve; 6-Silencer; 7-Connector; 8-Fixing bracket; 9-Filter element; 10-Sealing component; 11-Inlet quick connector; 12-Outlet quick connector; 13-Sealing ring;

[0033] 101-Inlet; 102-Outlet; 103-Gas passage; 104-First surface; 105-Second surface; 106-Third surface; 107-Fourth surface; 108-Receiving cavity; 109-Opening; 110-Proportional valve inlet; 111-Proportional valve outlet; 112-Pressure relief valve inlet; 113-Pressure relief valve outlet; 114-On / off valve inlet; 115-On / off valve outlet;

[0034] 1031 - Intake passage; 1032 - First flow channel; 1033 - Second flow channel; 1033a - Front section; 1033b - Rear section;

[0035] 71 - Flow and pressure sensor connector; 72 - Second pressure sensor connector; 73 - Third pressure sensor connector;

[0036] 81-Support part; 82-Through hole; 83-Protective ring;

[0037] 20 - Gas source; 30 - Gas filter; 40 - High pressure reducing valve; 50 - Medium pressure safety valve; 60 - First pressure sensor; 70 - Medium pressure reducing valve; 80 - Second pressure sensor; 90 - Third pressure sensor; 100 - Flow and pressure sensor. Detailed Implementation

[0038] This application discloses an insufflator and its low-pressure air manifold assembly, which reduces the size of the low-pressure air manifold assembly and simplifies installation and maintenance.

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] An insufflator can be used in conjunction with rigid endoscopes and surgical instruments to provide patients with gas at a constant temperature and pressure, such as by injecting it into the abdominal cavity. Gas. Specifically, the insufflator is used in conjunction with an insufflation tube, which delivers the gas processed by the insufflator to the patient. Please refer to [link to relevant documentation]. Figure 1The insufflator includes a main air inlet and a main air outlet. The main air inlet connects to an air source 20, which can be either a gas cylinder or a central air source. The main air outlet connects to the inlet of the insufflation tube. The insufflator includes a high-pressure depressurization module, a low-pressure regulating control module, and a backflow detection device, sequentially connected between the main air inlet and the main air outlet. The high-pressure depressurization module and the low-pressure regulating control module are used for pressure control, while the backflow detection device prevents backflow. During operation, the gas pressure output by the insufflator can be accurately adjusted according to surgical requirements or the patient's body shape, age, and other information to achieve optimal surgical conditions for abdominal surgeries, facilitating observation and treatment by the physician.

[0041] Please see Figure 2 The high-pressure reducing module includes a gas filter 30, a high-pressure reducing valve 40, and a medium-pressure safety valve 50 connected together. The gas filter 30 filters the input gas to improve safety. The high-pressure reducing valve 40 performs primary pressure reduction on the input high-pressure gas. The medium-pressure safety valve 50 opens to release pressure when the gas pressure in the pipeline reaches its corresponding opening pressure, ensuring that the pressure in the pipeline does not exceed the opening pressure of the medium-pressure safety valve 50, thus improving system safety. A first pressure sensor 60 is installed between the gas filter 30 and the high-pressure reducing valve 40 to detect the pressure of the input gas.

[0042] The low-pressure regulating control module includes a medium-pressure reducing valve 70, a proportional valve 2, a pressure relief valve 3, an on / off valve 4, and a low-pressure safety valve 5, all connected to each other. The medium-pressure reducing valve 70 is used to further reduce the pressure of the medium-pressure gas after it has been reduced by the high-pressure reducing valve 40, thus lowering its pressure further. The proportional valve 2 controls the gas flow and pressure within the pipeline to ensure the gas delivered to the human body is safe. Within a preset pressure range, the flow rate and pressure of the gas are controlled by adjusting the opening degree. The pressure relief valve 3 is mainly used for electrically controlled pressure release, releasing pressure when the abdominal cavity pressure exceeds the preset value. Before the pneumoperitoneum machine operates, the pressure relief valve 3 can perform a self-test; that is, gas is introduced while the valve is closed to check if the machine is functioning properly. After the test, the valve opens to release pressure. The on / off valve 4 controls the flow of gas; when the gas path is disconnected, the main outlet stops supplying gas. The low-pressure safety valve 5 protects the gas path by mechanically releasing pressure under abnormal overpressure conditions. Specifically, it opens when the gas pressure in the pipeline reaches the opening pressure corresponding to the low-pressure safety valve 5, ensuring that the pressure in the pipeline after the low-pressure safety valve 5 does not exceed its opening pressure, further improving system safety. A flow and pressure sensor 100 is installed after the proportional valve 2 to detect the gas flow rate after it. A second pressure sensor 80 and a third pressure sensor 90 are respectively installed before and after the on / off valve 4 to detect the gas pressure before and after the on / off valve 4. This pneumoperitoneum machine can realize overpressure release, underpressure compensation, and precise control of gas pressure and flow.

[0043] This application provides a low-pressure gas manifold assembly that integrates at least some components of a low-pressure regulating control module into a single manifold body, reducing its size and simplifying installation and maintenance. The following embodiments primarily describe the structure of the low-pressure gas manifold assembly.

[0044] In some embodiments, please refer to Figures 3-4 The low-pressure airway manifold assembly for an insufflator provided in this application includes an integral manifold body 1. The manifold body 1 has an air inlet 101 and an air outlet 102. A gas passage 103 is formed inside the manifold body 1, and the gas passage 103 is connected to the air inlet 101 and the air outlet 102 respectively. It is understood that the manifold body 1 here refers to the structural component with the gas passage 103, and its exterior is not specifically limited; it can be a pipe or something else entirely. Figure 3 The block structure shown. The inlet 101 and outlet 102 of the manifold body 1 serve as the overall gas inlet and outlet of the low-pressure gas manifold assembly. For example, the gas after passing through the medium-pressure reducing valve 70 enters the gas passage 103 through the inlet 101, and finally exits through the outlet 102 along the gas passage 103. The specific structure of the gas passage 103 can be configured according to the valve group on the manifold body 1 to form a block structure. Figure 2 The air path is shown.

[0045] At least two valve bodies are located outside the manifold body 1 and are connected to the gas passage 103. The valve bodies do not need to be connected by pipes; they are interconnected through the gas passage 103 inside the manifold body 1 to meet the corresponding low-pressure control function of the pneumoperitoneum machine. Specifically, the valve body may include at least two of the proportional valve 2, pressure relief valve 3, on / off valve 4, and low-pressure safety valve 5 from the aforementioned low-pressure regulating control module; that is, at least two of the proportional valve 2, pressure relief valve 3, on / off valve 4, and low-pressure safety valve 5 are integrated into the manifold body 1.

[0046] The low-pressure air manifold assembly of the pneumoperitoneum machine provided in this application is designed with an integrated manifold body 1 and at least two valve bodies disposed on the manifold body 1. The valve bodies are connected to each other through the gas passage 103 inside the manifold body 1. In other words, at least two valve bodies are integrated into the manifold body 1 without the need for pipeline connection. Therefore, the overall volume of the low-pressure air manifold assembly is small, it can be operated modularly, and it is convenient for installation and maintenance.

[0047] In some embodiments, the proportional valve 2, pressure relief valve 3, on / off valve 4, and low-pressure safety valve 5 of the low-pressure regulating control module are all located in the manifold body 1, resulting in a high degree of modularity, a simple and compact structure, and easier installation and maintenance. In other embodiments, as needed, some of the aforementioned proportional valve 2, pressure relief valve 3, on / off valve 4, and low-pressure safety valve 5 can also be located in the manifold body 1, such as integrating any two or any three of them into the manifold body 1, while the remaining parts can still be connected through pipelines. This achieves modularity while increasing the overall structural flexibility. For ease of explanation, the following embodiments use the example of the proportional valve 2, pressure relief valve 3, low-pressure safety valve 5, and on / off valve 4 of the low-pressure regulating control module all being located in the manifold body 1.

[0048] In some embodiments, the gas passage 103 includes an inlet passage 1031, a first flow channel 1032, and a second flow channel 1033. One end of the inlet passage 1031 is connected to the inlet port 101, and the other end is connected to the inlet of the proportional valve 2. One end of the first flow channel 1032 is connected to the outlet of the proportional valve 2, and the other end is connected to the inlet of the pressure relief valve 3. The second flow channel 1033 is sequentially connected to the outlet of the proportional valve 2, the inlet and outlet of the on / off valve 4, the inlet of the low-pressure safety valve 5, and the outlet port 102. That is, after the inlet port 101 is connected to the proportional valve 2 via the inlet passage 1031, it can be divided into two paths. One path connects sequentially to the on / off valve 4 and the low-pressure safety valve 5 via the first flow channel 1032 and is discharged through the outlet port 102. The other path connects to the pressure relief valve 3. Specifically, the flow rate of gas into the first flow channel 1032 or the second flow channel 1033 can be controlled by the proportional valve 2. The parallel gas path structure makes better use of space, reduces the volume of the manifold body, and thus reduces the volume of the low-pressure gas path manifold assembly.

[0049] For example, the manifold 1 is provided with a proportional valve inlet 110 and a proportional valve outlet 111 corresponding to the proportional valve 2. The input port of the proportional valve 2 is located at the proportional valve inlet 110, which can be connected by a quick connector; the output port of the proportional valve 2 is located at the proportional valve outlet 111, which can also be connected by a quick connector for easy installation and maintenance.

[0050] For example, the manifold 1 is provided with a pressure relief valve inlet 112 and a pressure relief valve outlet 113 corresponding to the pressure relief valve 3. The inlet of the pressure relief valve 3 is located at the pressure relief valve inlet 112, which can be connected by a quick connector; the outlet of the pressure relief valve 3 is located at the pressure relief valve outlet 113, which can be connected by a quick connector.

[0051] For example, the manifold 1 is provided with an on / off valve inlet 114 and an on / off valve outlet 115 corresponding to the on / off valve 4. The on / off valve 4 is located at the on / off valve inlet 114, which can be connected via a quick connector; the on / off valve 4 is located at the on / off valve outlet 115, which can also be connected via a quick connector.

[0052] For example, the manifold 1 is provided with a low-pressure safety valve inlet corresponding to the low-pressure safety valve 5, and the input port of the low-pressure safety valve 5 is located at the low-pressure safety valve inlet, which can be connected by a quick connector.

[0053] In some embodiments, the intake passage 1031 extends along a first direction, the first flow channel 1032 extends along a second direction, and the second flow channel 1033 includes a front portion 1033a and a rear portion 1033b that are connected. The front portion 1033a extends along the first direction, and the rear portion 1033b extends along the second direction. The on / off valve 4 and the low-pressure safety valve 5 are respectively connected to the rear portion 1033b. The first direction and the second direction form an angle within a set range. It can be understood that the front portion 1033a is the part of the second flow channel 1033 through which the gas flows first, and the rear portion 1033b is the part of the second flow channel 1033 through which the gas flows last. By adopting the above-mentioned bending arrangement in the extending directions of the intake passage 1031, the first flow channel 1032, and the second flow channel 1033, the space of the gas passage 103 in the first and second directions can be fully utilized, making the overall structure more compact and further reducing the volume of the manifold body 1, thereby reducing the volume of the low-pressure gas manifold assembly. For example, the first direction is perpendicular to the second direction, that is, the angle between the first direction and the second direction is 90 degrees. If the manifold body 1 is approximately cuboid in shape, the first direction is specifically along the width direction of the cuboid, and the second direction is along the length direction of the cuboid.

[0054] In some embodiments, the proportional valve 2, the pressure relief valve 3, and the on / off valve 4 are all disposed on the first surface 104 of the manifold body 1. The proportional valve 2, the pressure relief valve 3, and the on / off valve 4 are relatively large; therefore, all three are disposed on the first surface 104, as shown in the following figures. Figure 3As shown, the length direction of all three components is perpendicular to the first surface 104. Compared to having the three components distributed on different surfaces, this avoids protruding parts in all directions, resulting in a more compact overall layout and higher space utilization. For example, the proportional valve 2 and the pressure relief valve 3 are spaced apart along the second direction, and the on / off valve 4 is spaced apart from the proportional valve 2 and the pressure relief valve 3 along the first direction, specifically positioned between the proportional valve 2 and the pressure relief valve 3. This arrangement facilitates the avoidance of misalignment among the three components, resulting in a more compact overall layout.

[0055] In some embodiments, the low-pressure safety valve 5 is disposed on the second surface 105 of the manifold body 1, the air outlet 102 is disposed on the third surface 106 of the manifold body 1, and the air inlet 101 is disposed on the fourth surface 107 of the manifold body 1; wherein the second surface 105, the third surface 106, and the fourth surface 107 are all adjacent to the first surface 104, and the three have different orientations. By disposing the low-pressure safety valve 5, the air outlet 102, and the air inlet 101 on different surfaces, the surface of the manifold body 1 is fully utilized, making the overall structure of the assembly compact, and leaving a bottom surface for easy installation on the equipment base plate. For example, the manifold body 1 is approximately cuboid, such as... Figure 3 As shown, the first surface 104 is the top surface in the illustrated state, the second surface 105 is the left side surface in the illustrated state, the third surface 106 is the front side surface in the illustrated state, and the fourth surface 107 is the right side surface in the illustrated state.

[0056] In some embodiments, the third surface 106 is further provided with a silencer 6, the inlet of which is connected to the outlet of the pressure relief valve 3. Exemplarily, the gas passage 103 also includes a third flow channel, one end of which is connected to the outlet of the pressure relief valve 3, and the other end to the inlet of the silencer 6. For ease of disassembly and maintenance, the silencer 6 is connected to the manifold body 1 via a quick connector. The silencer 6 serves to reduce noise and prevent dust; by placing the silencer 6 on the third surface 106 of the manifold body 1, space is fully utilized. Furthermore, the fact that both the silencer 6 and the air outlet 102 are located on the third surface 106 also facilitates the layout of the gas passage 103 within the manifold body 1.

[0057] In some embodiments, a valve body is disposed on a first surface 104 of a manifold body 1. The manifold body 1 also has at least one hose connector 7 for connecting a sensor, and the hose connector 7 communicates with a gas passage 103. A mounting bracket 8 is also provided on the first surface. The mounting bracket 8 has a support portion 81 for supporting the hose connected to the hose connector 7. The support portion 81 is spaced apart from the outer wall surface of the manifold body 1 and spaced apart from the valve body. The aforementioned sensor includes, but is not limited to, those described above. Figure 2The second pressure sensor 80 and the third pressure sensor 90, connected before and after the on / off valve 4, and the flow pressure sensor 100, connected after the proportional valve 2, are shown. Specifically, flow pressure sensors 100 are respectively provided between the proportional valve 2 and the on / off valve 4, and between the proportional valve 2 and the pressure relief valve 3. For example, the hose connector 7 is a threaded to barbed connector, used to connect the hose and communicate with the corresponding sensor through the hose. Further, the hose connector 7 is connected to the corresponding sensor through a pipeline. The sensor is externally connected, facilitating flexible layout.

[0058] It is understood that the support part 81 is used to support the hose, and its specific structure is not limited here. Furthermore, the number of support parts 81 can be set according to the number of hoses and the required number of support points, and is not specifically limited here. The support parts 81 and each valve body provided on the manifold body 1 are spaced apart, so that the hose supported by the support part 81 is spaced apart from each valve body on the first surface and does not contact it. Since the valve body will generate heat during long-term operation, if the hose comes into contact with it, the temperature of the gas inside the hose will rise, and the thermal expansion and contraction of the gas will affect the accuracy of its pressure and flow rate detection. In this embodiment, by setting the fixing bracket 8, which is mainly used to support the hose connecting the sensor, errors caused by temperature fluctuations due to contact between the hose and the surface of each valve body are avoided, and direct contact and friction between the hose and the manifold body 1 are also prevented.

[0059] For example, the hose connector 7 includes a flow pressure sensor connector 71 for connecting to the flow pressure sensor 100, a second connector pressure sensor 72 for connecting to the second pressure sensor 80, and a third pressure sensor connector 73 for connecting to the third pressure sensor 90. When flow pressure sensors 100 are respectively provided between the proportional valve 2 and the on / off valve 4, and between the proportional valve 2 and the pressure relief valve 3, a first flow pressure sensor connector 711 is provided for the flow pressure sensor 100 between the proportional valve 2 and the on / off valve 4, and a second flow pressure sensor connector 712 is provided for the flow pressure sensor 100 between the proportional valve 2 and the pressure relief valve 3.

[0060] For example, the mounting bracket 8 has a through hole 82, and the support portion 81 includes the inner wall surface of the through hole 82. When a hose is inserted into the through hole 82, the hose is supported by the inner wall surface of the through hole 82 and does not come into contact with the valve bodies. Furthermore, a protective ring 83 is fitted inside the through hole 82. The protective ring 83 is made of an elastic material, such as a rubber protective ring. The support portion 81 includes the inner wall surface of the protective ring 83. The protective ring 83 effectively supports the hose while protecting it, preventing damage to the hose from hard contact.

[0061] In some embodiments, the hose connector 7 is disposed on the first surface 104 of the manifold body 1. By disposing each hose connector 7 on the first surface 104, the space of the first surface 104 is fully utilized, making it convenient to assemble and disassemble the hose. Furthermore, since the hose connector 7 and the fixing bracket 8 are disposed on the same surface, and the two are close together, a shorter hose can be matched with the fixing bracket and supported by the support part 81. Therefore, the above arrangement can shorten the length of the hose.

[0062] In some embodiments, the gas channel 103 is provided with a receiving cavity 108, and a filter element 9 is provided in the receiving cavity 108; the manifold body 1 is also provided with at least one hose connector 7 for connecting to the sensor, and the hose connector 7 is in communication with the gas channel 103; the receiving cavity 108 is positioned in the gas channel such that the gas flowing out of the manifold body 1 from the hose connector 7 has been filtered by the filter element 9. It is understood that when multiple hose connectors 7 are provided, the gas flowing out of the manifold body 1 from each hose connector 7 can be configured to be filtered by the filter element 9, such as providing multiple filter elements 9 for each hose connector 7; or the gas flowing out of the manifold body 1 from one or more of each hose connector 7 can be filtered by the filter element 9, both of which are within the scope of protection of this application. By providing the filter element 9, when the gas flows into the sensor, it first passes through the filter element 9 and is filtered by the filter element 9, and then enters the sensor for detection. By providing the filter element, the influence of impurities in the gas on the sensor is avoided, and the service life of the sensor can be extended.

[0063] On the other hand, by providing a filter element 9 within the gas passage 103, the filter element 9 can change the diameter of the gas path, thereby causing different flow rates before and after the filter element 9 under the same pressure, thus achieving flow rate variation. Flow monitoring can be achieved through the filter element 9 and a differential pressure flow sensor on the control board assembly. For example, the filter element 9 is a cylindrical filter element.

[0064] In some embodiments, the outer wall of the manifold body 1 is provided with an opening 109 communicating with the receiving cavity 108. The opening 109 is provided with a sealing component 10, which is detachably connected to the manifold body 1 to open or close the opening 109. By providing the sealing component 10 detachably connected to the manifold body 1, the sealing component 10 blocks the opening 109 during normal operation of the low-pressure gas manifold assembly. When it is necessary to clean or replace the filter element 9, the sealing component 10 opens the opening 109, allowing for convenient access to the filter element 9. It is understood that the detachable connection here includes, but is not limited to, bolted connections, threaded connections, etc. For example, the sealing component 10 is sealed to the manifold body 1 by a sealing ring 13.

[0065] In some embodiments, the low-pressure air manifold assembly further includes an air intake quick connector 11 disposed at the air inlet 101. Exemplarily, the air intake quick connector 11 is an L-shaped quick connector. By providing the air intake quick connector 11, air path connection is facilitated, allowing for convenient assembly and disassembly of the low-pressure air manifold assembly from the pneumoperitoneum machine.

[0066] In some embodiments, the low-pressure air manifold assembly further includes an outlet quick connector 12 located at the outlet 102. Exemplarily, the outlet quick connector 12 is an L-shaped quick connector. By providing the outlet quick connector 12, air path connection is facilitated, allowing for convenient assembly and disassembly of the low-pressure air manifold assembly from the pneumoperitoneum machine.

[0067] Based on the low-pressure airway manifold assembly provided in the above embodiments, this application also provides an insufflator, which includes any of the low-pressure airway manifold assemblies described in the above embodiments. Since this insufflator uses the low-pressure airway manifold assembly described in the above embodiments, the beneficial effects of this insufflator can be found in the above embodiments.

[0068] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0069] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A low-pressure airway manifold assembly for an insufflator, characterized in that, include: An integrated manifold body (1) is provided with an air inlet (101) and an air outlet (102). A gas passage (103) is formed inside the manifold body (1), and the gas passage (103) is connected to the air inlet (101) and the air outlet (102) respectively. At least two valve bodies are located outside the manifold body (1) and are connected to the gas passage (103).

2. The low pressure gas circuit manifold assembly for a pneumostachian according to claim 1, wherein, The valve body includes a proportional valve (2), a pressure relief valve (3), an on / off valve (4), and a low-pressure safety valve (5), and the gas passage (103) includes: The intake passage (1031) is connected at one end to the intake port (101) and at the other end to the inlet of the proportional valve (2); The first flow channel (1032) is connected at one end to the outlet of the proportional valve (2) and at the other end to the inlet of the pressure relief valve (3); The second flow channel (1033) is connected in sequence to the outlet of the proportional valve (2), the inlet and outlet of the on / off valve (4), the inlet of the low-pressure safety valve (5), and the air outlet (102).

3. The low pressure gas circuit manifold assembly for a pneumostasis machine of claim 2, wherein, The intake passage (1031) extends along a first direction, the first flow channel (1032) extends along a second direction, and the second flow channel (1033) includes a front part (1033a) and a rear part (1033b) that are connected to each other. The front part (1033a) extends along the first direction, and the rear part (1033b) extends along the second direction. The on / off valve (4) and the low-pressure safety valve (5) are respectively connected to the rear part (1033b). Wherein, the first direction and the second direction form an angle within a set range.

4. The low pressure gas circuit manifold assembly for a pneumostachian of claim 3, wherein, The proportional valve (2), the pressure relief valve (3), and the on / off valve (4) are all located on the first surface (104) of the manifold body (1), the low-pressure safety valve (5) is located on the second surface (105) of the manifold body (1), the air outlet (102) is located on the third surface (106) of the manifold body (1), and the air inlet (101) is located on the fourth surface (107) of the manifold body (1). The second surface (105), the third surface (106) and the fourth surface (107) are all adjacent to the first surface (104), and the three surfaces have different orientations.

5. The low pressure gas circuit manifold assembly for a pneumostachian of claim 4, wherein, The third surface (106) is also provided with a silencer (6), the inlet of which is connected to the outlet of the pressure relief valve (3).

6. The low pressure gas circuit manifold assembly for a pneumostasis machine according to any one of claims 1 to 5, characterized in that, The valve body is disposed on the first surface (104) of the manifold body (1); the manifold body (1) is also provided with at least one hose connector (7) for connecting the sensor, and the hose connector (7) is connected to the gas passage (103); the first surface (104) is also provided with a fixing frame (8), the fixing frame (8) is provided with a support part (81) for supporting the hose connected to the hose connector (7), the support part (81) is spaced apart from the outer wall surface of the manifold body (1) and spaced apart from the valve body.

7. The low pressure gas circuit manifold assembly for a insufflator of claim 6, wherein, The hose connector (7) is located on the first surface (104) of the manifold body (1).

8. The low-pressure airway manifold assembly of the pneumoperitoneum machine according to any one of claims 1 to 5, characterized in that, The gas channel (103) is provided with a receiving cavity (108), and the receiving cavity (108) is provided with a filter element (9); the manifold body (1) is also provided with at least one hose connector (7) for connecting the sensor, and the hose connector (7) is connected to the gas channel (103); the receiving cavity (108) is located in the gas channel such that the gas flowing out of the manifold body (1) from the hose connector (7) has been filtered by the filter element (9).

9. The low pressure gas circuit manifold assembly for a insufflator of claim 8, wherein, The outer wall of the manifold body (1) is provided with an opening (109) communicating with the accommodating cavity (108). The opening (109) is provided with a sealing component (10). The sealing component (10) is detachably connected to the manifold body (1) to open or close the opening (109).

10. A pneumostachion, characterized by Includes the low-pressure airway manifold assembly of the pneumoperitoneum machine as described in any one of claims 1-9.

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