Pipeline structure of medical ventilation equipment and anesthesia machine

Abstract

The invention discloses a pipeline structure of medical ventilation equipment, an anaesthesia machine and a breathing machine, and a main pipeline and / or a control end branch are / is provided with a silencing pipeline. When sound waves are transmitted in the silencing pipeline, the main pipeline and / or the control end branch, interaction is generated, the silencing effect is achieved, and vibration and noise of the pipeline structure are reduced.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to a pipeline structure of a medical ventilation device. Background Art

[0002] Medical ventilation equipment is a relatively common medical device, including but not limited to anesthesia machines, ventilators, and anesthesia-breathing machines. In medical ventilation equipment, the pipeline structure is an essential component for gas transmission. However, in some cases, during the gas transmission process, local resonance will occur between the gas and the control parts (such as valves), and noise will be generated. This vibration and noise will not only affect the accuracy of airflow control, but may also cause bad feelings to medical staff and patients due to abnormal vibration and noise.

[0003] Application Contents

[0004] The present application provides a pipeline structure of a medical ventilation device and an anesthesia machine, which are used to reduce vibration and noise during gas transmission in the medical ventilation device.

[0005] Based on the above purpose, an embodiment of the present application provides a pipeline structure of a medical ventilation device, including a main pipeline, a silencer pipeline, and a control member for adjusting the pressure or flow of gas flowing in the main pipeline, wherein the main pipeline has an inflow end and an outflow end, and the control member is arranged between the inflow end and the outflow end and has a front end corresponding to the inflow end and a rear end corresponding to the outflow end;

[0006] Wherein, the silencer pipeline is arranged in a bypass manner between the inflow end of the main pipeline and the control element; and / or the silencer pipeline is arranged in a bypass manner between the outflow end of the main pipeline and the control element; and / or the silencer pipeline is arranged in a bypass manner on the control element and / or the control end branch connected to the control element; and / or the silencer pipeline is arranged in a bypass manner between the front end and the rear end of the control element on the main pipeline;

[0007] When the silencer pipeline is arranged on the main pipeline, part of the gas flowing in the main pipeline can enter the silencer pipeline and then return to the main pipeline; when the silencer pipeline is arranged on the control component and / or the control end branch, part of the gas flowing in the control end branch can enter the silencer pipeline and then return to the control component and / or the control end branch.

[0008] Based on the above-mentioned purpose, an anesthesia machine is provided in one embodiment of the present application, including an anesthesia machine body and a ventilation system arranged on the anesthesia machine body, the ventilation system including a driving mechanism and a gas delivery device, the driving mechanism is connected to the gas delivery device; the anesthesia machine also includes the above-mentioned pipeline structure.

[0009] The pipeline structure and anesthesia machine shown in the above embodiments, the silencer pipeline is arranged in a bypass manner between the inflow end of the main pipeline and the control element; and / or the silencer pipeline is arranged in a bypass manner between the outflow end of the main pipeline and the control element; and / or the silencer pipeline is arranged in a bypass manner on the control end branch connected to the control element; and / or the silencer pipeline is arranged in a bypass manner between the front end and the rear end of the control element on the main pipeline. When the sound wave propagates in the main pipeline and / or the control end branch, a part of the sound wave enters the silencer pipeline, and after propagating a certain distance in the silencer pipeline, it returns to the main pipeline and / or the control end branch. Among them, the sound wave propagated from the silencer pipeline back to the main pipeline and / or the control end branch interacts with a part of the sound wave in the original main pipeline and / or the control end branch to achieve the silencer effect and reduce the vibration and noise of the pipeline structure.

[0010] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a structural schematic diagram of an embodiment of the present application in which a silencer pipeline is arranged between the inflow end of the main pipeline and the control element;

[0013] Figure 2 It is a structural schematic diagram of an embodiment of the present application in which a silencer pipeline is arranged between a control component and an outflow end of a main pipeline;

[0014] Figure 3 It is a structural schematic diagram of an embodiment of the present application in which a silencer pipe is arranged between the front end and the rear end of a control member;

[0015] Figure 4 and 5 It is a structural schematic diagram of a control end branch of a control element in some embodiments of the present application where a silencer pipe is arranged;

[0016] Figure 6 It is a structural schematic diagram of two single-frequency silencer pipes arranged in parallel on a main pipe in one embodiment of the present application;

[0017] Figure 7-9 It is a structural schematic diagram of a multi-frequency silencer pipeline arranged on a main pipeline in some embodiments of the present application. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should also be understood that the terms used in this specification of the present application are only for describing specific realities. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0020] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0021] In some embodiments of the present application, a pipeline structure is disclosed, and the pipeline structure is applied to medical ventilation equipment, which includes but is not limited to ventilators, anesthesia machines and respiratory anesthesia machines (i.e., equipment with both anesthesia and respiratory functions), to reduce vibration and noise during the gas delivery process. The pipeline structure can be used to transmit but is not limited to inhaled gas for patient inhalation, exhaled gas exhaled by the patient, anesthetic gas for patient inhalation, driving gas for controlling the operation of the gas delivery device in the ventilator / anesthesia machine / respiratory anesthesia machine, and / or gas for pressure monitoring (such as gas in the PEEP pipeline, gas in the pressure relief pipeline), etc. The gas delivery device can be but is not limited to other structures with similar functions such as a folding bag or a capacity reflector to complete the inhalation and exhalation operations of the anesthesia machine or respiratory anesthesia machine on the patient.

[0022] Please refer to Figure 1-5In some embodiments, the pipeline structure includes a main pipeline 100 and a control component 200 for adjusting the pressure or flow of gas flowing in the main pipeline 100. The control component 200 is arranged on the main pipeline 100, for example, the control component 200 can be various gas valves, flow meters, pressure gauges or other components capable of achieving pressure control and / or flow control.

[0023] Please refer to Figure 1-5 In some embodiments, the main pipeline 100 has an inflow end 110 and an outflow end 120, and the control element 200 is disposed between the inflow end 110 and the outflow end 120, and has a front end corresponding to the inflow end 110 and a rear end corresponding to the outflow end 120. The inflow end 110 is an end of the main pipeline 100 for gas to enter, and the outflow end 120 is an end of the main pipeline 100 for gas to flow out. In addition, please refer to Figure 4 and 5 In some embodiments, the control component 200 may also be connected to a control end branch 400, and the control end branch 400 may be used for pressure monitoring, etc., for example, it may be but not limited to a PEEP pipeline, a pressure relief pipeline, etc.

[0024] In some cases, during the gas transmission process, the gas resonates with the control element 200, thereby generating vibration noise, which propagates in the form of sound waves in the passage formed by the main line 100 and / or the control end branch 400. In this regard, in some embodiments of the present application, the pipeline structure also includes a silencer pipeline 300, which is connected to the main line 100 and / or the control end branch 400. The silencer pipeline 300 can adopt various structures that can achieve vibration reduction and noise reduction. The silencer pipeline 300 can form a bypass relative to the passage formed by the main line 100 and / or the control end branch 400, so that a part of the gas in the main line 100 and / or the control end branch 400 can flow into the silencer pipeline 300, and then flow back from the silencer pipeline 300 to the main line 100 and / or the control end branch 400.

[0025] The silencer pipe 300 can be directly connected to the main pipe 100, or directly connected to the control end branch 400 on the control element 200. Figure 1 In some embodiments, the muffler pipe 300 is disposed between the inflow end 110 of the main pipe 100 and the control element 200 in a bypass manner. Figure 2 In some embodiments, the silencer pipe 300 is disposed between the outflow end 120 of the main pipe 100 and the control element 200 in a bypass manner. Figure 3 In some embodiments, the muffler pipe 300 is disposed between the front end and the rear end of the control element 200 in a bypass manner. Figure 4 and 5In some embodiments, the silencer pipe 300 is disposed in a bypass manner on the control end branch 400 to which the control element 200 is connected.

[0026] When the silencer pipe 300 is arranged on the main pipe 100, part of the gas flowing in the main pipe 100 can enter the silencer pipe 300 and then return to the main pipe 100. When the silencer pipe 300 is arranged on the control end branch 400, part of the gas flowing in the control end branch 400 can enter the silencer pipe 300 and then return to the control end branch 400.

[0027] The gas in the main line 100, the control end branch 400 and the silencer pipe 300 can be used as a transmission medium for the sound waves of the noise, so that the sound waves of the noise can be propagated in the main line 100, the control end branch 400 and the silencer pipe 300. When the sound waves propagate in the main line 100 and / or the control end branch 400, a part of the sound waves enters the silencer pipe 300, and after propagating a certain distance in the silencer pipe 300, they return to the main line 100 and / or the control end branch 400 respectively. Among them, the flow path formed in the silencer pipe 300 (i.e., the path formed by the gas flowing in the silencer pipe 300) can make the sound waves propagated from the silencer pipe 300 back to the main line 100 and the control end branch 400 interact with a part of the sound waves in the original main line 100 and the control end branch 400, so as to achieve the effect of silencing and reduce the vibration and noise of the pipe structure.

[0028] The length of the flow path of the silencer pipe 300 affects the properties of the sound waves propagating from the silencer pipe 300 back to the main pipe 100 and the control end branch 400. Generally, the properties of the sound waves propagating from flow paths of different lengths back to the main pipe 100 and the control end branch 400 are also different. In some embodiments, a silencer pipe 300 can form a flow path of the same length, so this type of silencer pipe 300 can interact with the sound waves of a certain frequency in the original main pipe 100 and the control end branch 400 to achieve a sound elimination effect. Considering that the sound waves of the noise generated in the main line 100 and the control end branch 400 may have multiple different frequencies, such as transmitting different types of gases or transmitting mixed gases with multiple frequencies, in other embodiments, the silencer line 300 can form at least two flow paths of different lengths, so that when the sound waves in the silencer line 300 are propagated back to the main line 100 and the control end branch 400, they can interact with at least two sound waves of different frequencies in the main line 100 and the control end branch 400, thereby improving the silencer effect.

[0029] Specifically, please refer to Figure 1-6In some embodiments, the silencing pipeline 300 includes at least one single-frequency silencing pipeline 310, and the single-frequency silencing pipeline 310 has at least one flow path. When there are more than two flow paths, the lengths of these flow paths are substantially the same, so as to interact with the sound waves of the same frequency in the main pipeline 100 and / or the control end branch 400. The single-frequency silencing pipeline 310 is provided with at least one open end 301 (including 301a and 301b), and at least one open end 301 is connected to the main pipeline 100 and / or the control end branch 400, so that the single-frequency silencing pipeline 310 is connected to the main pipeline 100 and / or the control end branch 400.

[0030] More specifically, please refer to Figure 1 , 3 , 5 and 6, in some embodiments, the single-frequency silencer pipeline 310 is a first silencer pipeline 311 having a closed end 302 and an open end 301, and the closed end 302 and the open end 301 are respectively arranged at two ends of the first silencer pipeline 311. The gas flowing into the first silencer pipeline 311 through the open end 301 can be reflected by the closed end 302 and then return to the main pipeline 100 and / or the control end branch 400.

[0031] In order to form a flow path with a fixed length, in some embodiments, the inner end surface of the closed end 302 of the single-frequency muffler pipe 310 is a plane perpendicular to the flow path.

[0032] More specifically, in some embodiments, the first silencer pipe 311 is arranged beside the main pipe 100 and / or the control end branch 400 in a manner of bending back and forth. This bending structure can make full use of space to form a more compact structure, thereby forming a single-frequency silencer pipe 310 with a small volume but a long flow path. Of course, in other embodiments, the single-frequency silencer pipe 310 can also adopt other structures, such as a straight line, a curve, a bend or other shapes.

[0033] In addition, please refer to Figure 1 , 3 In some embodiments, the number of the single-frequency silencing pipeline 310 may be one, thereby forming a silencing pipeline 300 on the main pipeline 100 and / or the control end branch 400. In other embodiments, the number of the single-frequency silencing pipeline 310 may be two or more. Figure 6 In the illustrated embodiment, there are two single-frequency silencing pipelines 310, and the two single-frequency silencing pipelines 310 are connected in parallel to the main pipeline 100. Of course, the two single-frequency silencing pipelines 310 can also be connected in parallel to the control end branch 400.

[0034] When there are more than two single-frequency silencer pipes 310, each of these single-frequency silencer pipes 310 may have a flow path of the same length to interact with the sound waves of the same frequency in the main pipe 100 and / or the control end branch 400. Of course, at least two of these single-frequency silencer pipes 310 may have flow paths of different lengths to interact with the sound waves of at least two different frequencies in the main pipe 100 and / or the control end branch 400.

[0035] In addition to the first muffler pipe 311 having a closed end 302, please refer to Figure 2 and 4 In some embodiments, the single-frequency silencer pipeline 310 may also be a second silencer pipeline 312 having two open ends 301 (such as 301a and 301b). The open end 301 for gas entry may be the inlet end 301a, and the open end 301 for gas outflow may be the outlet end 301b. The two open ends 301 are respectively arranged at the two ends of the second silencer pipeline 312, and are arranged separately along the main pipeline 100 and / or the control end branch 400. The gas flowing into the second silencer pipeline 312 through one of the open ends 301a flows back to the main pipeline 100 and / or the control end branch 400 through the other open end 301b, and the sound waves of the main pipeline / control end branch interact with the sound waves returned by the second silencer pipeline to eliminate noise.

[0036] Please refer to Figure 2 and 4 In some embodiments, the second muffler pipeline 312 includes two connecting pipelines 313 respectively connected to two open ends (such as 301a and 301b) and a branch pipeline 314 disposed between the two connecting pipelines 313. The two connecting pipelines 313 and the branch pipeline 314 form a flow path for gas propagation. The two connecting pipelines 313 and the branch pipeline 314 can be an integrated pipeline or a segmented pipeline structure.

[0037] In addition, in some other embodiments, there may be at least two branch pipes 314 disposed between the two connecting pipes 313, and at least two branch pipes 314 are connected in parallel between the two connecting pipes 313. The two connecting pipes 313 and each branch pipe 314 form multiple flow paths for gas propagation, and the multiple flow paths have the same length. The more branch pipes 314 there are, the better the silencing effect.

[0038] More specifically, in some embodiments, the second silencer pipeline 312 forms a disc-shaped spiral structure, and the two open ends of the disc-shaped spiral structure (such as 301a and 301b) are arranged separately along the main pipeline 100 and / or the control end branch 400. In the disc-shaped spiral structure, the middle part of the second silencer pipeline 312 is folded in half and arranged in a spiral shape so that the two open ends (such as 301a and 301b) can be set on the same side. This disc-shaped spiral structure can make full use of the space to form a more compact structure, thereby forming a single-frequency silencer pipeline 310 with a small volume but a long flow path. Of course, in other embodiments, the single-frequency silencer pipeline 310 can also adopt other structures, such as Figure 2 and 4 The broken line type shown may also be a curve type, a bend type or other shapes.

[0039] On the other hand, please refer to Figure 7-9 In some embodiments, the muffler pipe 300 includes at least one multi-frequency muffler pipe 320, and a single multi-frequency muffler pipe 320 forms multiple flow paths for gas propagation. In a single multi-frequency muffler pipe 320, when there are more than two flow paths, at least two of the flow paths have different lengths, so as to interact with at least two different frequencies of sound waves in the main pipe 100 and / or the control end branch 400. The multi-frequency muffler pipe 320 is provided with at least one open end 301 (including 301a and 301b), and at least one open end 301 is connected to the main pipe 100 and / or the control end branch 400.

[0040] More specifically, in some embodiments, the multi-frequency silencer pipeline 320 is a third silencer pipeline 321 having multiple closed ends 302 and one open end 301. A flow path for gas propagation is formed between the open end 301 and each closed end 302. The gas flowing into the third silencer pipeline 321 through the open end 301 can be reflected by the multiple closed ends 302 and then return to the main pipeline 100 and / or the control end branch 400. Similarly, among the multiple flow paths formed by the third silencer pipeline 321, at least two flow paths have different lengths, so that the third silencer pipeline 321 can be used to eliminate noise of at least two different frequencies.

[0041] More specifically, please refer to Figure 7In some embodiments, the third silencer pipeline 321 includes a connecting pipeline 313 and at least one branch pipeline 314. The connecting pipeline 313 includes an open end 301, and is connected to the main pipeline 100 (or the control end branch 400) through the open end 301. The at least one branch pipeline 314 is connected to the connecting pipeline 313 in a bypass manner, and the connecting pipeline 313 and the branch pipeline 314 have closed ends 302 respectively. The closed ends 302 of the connecting pipeline 313 and the branch pipeline 314 can form flow paths with the open end 301 respectively, and the lengths of at least two of these flow paths are different. Figure 6 As shown, a flow path can be formed between the open end 301 and the closed end 302 of the connecting pipe 313, and another flow path can be formed between the open end 301 and the closed end 302 of the branch pipe 314, and the lengths of the two flow paths are different, that is, the gas entering the multi-frequency silencer pipeline 320 has different propagation lengths along the two flow paths.

[0042] exist Figure 7 In the illustrated embodiment, the branch pipe 314 is one. In other embodiments, the branch pipe 314 may be two or more. When there are two or more branch pipes 314, these branch pipes 314 may be connected to different positions of the connecting pipe 313, for example, arranged in parallel on the connecting pipe 313, or may be arranged on different sides around the connecting pipe 313. In some embodiments, when there are two or more branch pipes 314, the closed ends 302 of these branch pipes 314 and the open ends 301 of the connecting pipe 313 respectively form flow paths, and the lengths of the flow paths formed by the closed ends 302 and the open ends 301 of these branch pipes 314 may all be the same, or the lengths of at least two flow paths may be different, or the lengths of the flow paths may be different.

[0043] In other embodiments, the third muffler pipeline 321 includes a connecting pipeline 313 and at least one branch pipeline 314, the connecting pipeline 313 includes an open end 301, and is connected to the main pipeline 100 (or the control end branch 400) through the open end 301. In this embodiment, the at least one branch pipeline 314 includes a first branch pipeline (not shown) connected to the connecting pipeline 313 in a bypass manner and a second branch pipeline (not shown) connected to the first branch pipeline in a bypass manner, and the connecting pipeline 313, the first branch pipeline and the second branch pipeline respectively have a closed end 302. The closed ends 302 of the connecting pipeline 313, the first branch pipeline and the second branch pipeline can form at least three flow paths with the open end 301, and at least two of the at least three flow paths have different lengths.

[0044] In addition, in other embodiments, a third branch pipe or more branch pipes may be arranged on the second branch pipe according to the structure of the first branch pipe and the second branch pipe.

[0045] In other embodiments, the multi-frequency silencer pipeline 320 is a fourth silencer pipeline 322 having two open ends 301. The two open ends 301 include an inlet end 301a and an outlet end 302b, and multiple flow paths for gas propagation are formed between the inlet end 301a and the outlet end 302b, and the lengths of at least two of these flow paths are different. The gas flowing into the fourth silencer pipeline 322 through the inlet end 301a can flow through multiple flow paths respectively, and then flow through the outlet end 302b to return to the main pipeline 100 and / or the control end branch 400. Similarly, among the multiple flow paths formed by the fourth silencer pipeline 322, the lengths of at least two flow paths are different, so that the fourth silencer pipeline 322 can be used to eliminate noise of at least two different frequencies.

[0046] Please refer to Fig. 9 In some embodiments, the fourth muffler pipeline 322 includes two connecting pipes 313 and at least two branch pipes 314. One connecting pipe 313 includes an inlet end 301a, and the other connecting pipe 313 includes an outlet end 302b. The at least two branch pipes 314 are connected to the two connecting pipes 313 in parallel to form a plurality of flow paths, wherein at least two of the flow paths have different lengths. The connecting pipe 313 and the at least two branch pipes 314 can form flow paths respectively, and at least two of the at least two flow paths formed have different lengths. Fig. 9 In the specific example shown, the connecting pipe 313 and the two parallel branch pipes 314 form two flow paths, and the lengths of the two flow paths are different, that is, the gas entering the multi-frequency silencer pipeline 320 has different propagation lengths along the two flow paths.

[0047] exist Fig. 9 In the fourth muffler pipe 322 shown, the two connecting pipes 313 are arranged side by side on the main pipe 100 (or the control end branch 400). In other embodiments, the two connecting pipes 313 can also be connected to the main pipe 100 and / or the control end branch 400 in other forms.

[0048] In some embodiments, the multi-frequency silencer pipeline 320 is a fifth silencer pipeline 323 having at least three open ends 301, and at least one flow path for gas propagation is formed between every two open ends 301 of the at least three open ends 301. Among these flow paths, the lengths of at least two flow paths are different. The gas flowing into the fifth silencer pipeline 323 through an open end 301 can flow through at least one flow path between the open end 301 and the other open ends 301, and then flow through the other open ends 301 to return to the main pipeline 100 and / or the control end branch 400. For the fifth silencer pipeline 323 of this embodiment, among all the flow paths formed between every two open ends, the lengths of at least two flow paths are different, so that the fifth silencer pipeline 323 can be used to eliminate noise of at least two different frequencies.

[0049] More specifically, please refer to Figure 8 In some embodiments, the fifth muffler pipeline 323 includes at least three connecting pipes 313 and a branch pipe 314; each connecting pipe 313 has an open end 301, and a branch pipe 314 is connected to each connecting pipe 313 at different connection points. Figure 8 In the specific example shown, from Figure 8 The two connecting pipes 313 arranged on the left and the middle and a part of the branch pipe 314 form a flow path. Figure 8 The two connecting pipes 313 arranged on the left and right sides form another flow path with all the branch pipes 314, and the lengths of the two flow paths are different, that is, the gas entering the multi-frequency silencer pipeline 320 has different propagation lengths along the two flow paths.

[0050] As Figure 8 A variant embodiment of Figure 8 The two connecting pipes 313 arranged on the left and the middle can be connected through a branch pipe 314 to form a flow path; Figure 8 The two connecting pipes arranged on the left and right sides can be connected through another branch pipe 314 to form another flow path. Figure 8 Another variant embodiment, in Figure 8 Two or more branch pipes may be connected in parallel between the three connecting pipes 313; taking two branch pipes connected in parallel as an example, Figure 8 The two connecting pipes 313 arranged on the left and the middle and a part of each pipe of the two branch pipes form two flow paths respectively. Figure 8 The two connecting pipes 313 arranged on the left and right sides and the entire pipes of the two branch pipes 314 form another two flow paths.

[0051] In some embodiments, the number of the multi-frequency silencer pipeline 320 may be one, so that one silencer pipeline 300 is formed on the main pipeline 100 and / or the control end branch 400. In other embodiments, the number of the multi-frequency silencer pipeline 320 may be two or more. When there are at least two multi-frequency silencer pipelines 320, at least two multi-frequency silencer pipelines 320 are connected in parallel to the main pipeline 100 and / or the control end branch, and the two multi-frequency silencer pipelines 320 may have different pipeline structures, so that the flow paths provided by each have at least partially different lengths.

[0052] On the other hand, in addition to Figure 7-9 As shown, in addition to using different pipeline sections to form a multi-frequency muffler pipeline 320, in some embodiments, more than two flow paths of different lengths can be formed by changing the end surface shape of the closed end 302. For example, in some examples, Figure 1 , 3 In the embodiments shown in , 5 and 6, the end face of the closed end 302 is designed to be an irregular surface (i.e., a plane that is not perpendicular to the flow path). Preferably, in some embodiments, the irregular surface includes one or more of the following combinations: a corrugated surface, an arcuate surface, an inclined surface, and a stepped surface. When the closed end 302 is an irregular surface, the lengths of the flow paths formed by the various regions of the closed end 302 relative to the open end 301 are different, so that the sound waves entering the silencer pipe 300 can be reflected by different regions of the closed end 302, thereby changing the properties of the reflected sound waves, so as to interact with the sound waves of at least two frequencies in the main pipe 100 and / or the control end branch 400. Figure 7 In the illustrated embodiment, the closed end 302 of the connecting pipe 313 and / or the branch pipe 314 may also be configured as an irregular surface, so that the closed end 302 of the connecting pipe 313 and / or the branch pipe 314 may further form more flow paths of different lengths relative to the open end.

[0053] Furthermore, in some embodiments, the muffler pipe 300 includes a plurality of segmented pipes having a hollow pipe body, and the plurality of segmented pipes are connected to form the muffler pipe 300. Figure 1-8 In the embodiment shown, the connecting pipe 313 and the branch pipe 314 are separate segmented pipes, which are then fixedly connected as one through a fixing process, and the fixing method may be but is not limited to welding, bonding, screwing, clamping or fixing through a fixing member, etc. Of course, in other embodiments, the silencer pipe 300 may also be an integrated pipe with a hollow pipe body, for example, an integrated structure is formed by injection molding, casting, 3D printing, etc.

[0054] Taking the muffler pipeline composed of pipes in a back-and-forth bending shape as an example, it is composed of multiple straight segmented pipes and curved segmented pipes. The straight segmented pipes are connected by curved segmented pipes to form a curved shape; and the multiple curved segmented pipes are connected to the straight segmented pipes to form a back-and-forth bending shape.

[0055] Further, in some embodiments, the diameter of the equivalent channel for gas to flow through in the silencer pipe 300 is 2mm-100mm, preferably 2mm-30mm. The equivalent channel diameter here refers to the diameter size when the channel cross section is equivalent to a circular cross section. That is, the silencer pipe of the present application is not limited to a pipe with a circular cross section. And / or, in some embodiments, the flow path length for gas to flow through in the silencer pipe 300 is 20mm-10000mm, preferably 20mm-3000mm. The flow path length here refers to the length of the gas flowing through the silencer pipe.

[0056] On the other hand, in some embodiments of the present application, an anesthesia machine is also provided, which includes an anesthesia machine body and a ventilation system arranged on the anesthesia machine body. The ventilation system includes a driving mechanism and a gas delivery device, the driving mechanism is connected to the gas delivery device, and the driving mechanism drives the gas delivery device to deliver gas. For example, the driving mechanism can be an air pump or other structure that can drive the output device to work. The gas delivery device can adopt but is not limited to a folding bag, a capacity reflector or other structures that can be used in an anesthesia machine to drive the breathing circuit of the anesthesia machine to input gas to the patient. In addition, the anesthesia machine also includes a pipeline structure as shown in any of the above embodiments. The pipeline structure can be used to transmit but is not limited to inhaled gas for inhalation by the patient, exhaled gas exhaled by the patient, anesthetic gas for inhalation by the patient, driving gas for controlling the operation of the gas delivery device in the ventilator or respiratory anesthesia machine, and / or gas for pressure monitoring (such as gas in the PEEP pipeline, gas in the pressure relief pipeline), etc.

[0057] Furthermore, in some embodiments, the pipeline structure is connected to the ventilation system and is used to connect the driving mechanism and the gas delivery device. The driving mechanism applies pressure or releases pressure on the gas delivery device by driving gas. The driving mechanism includes an inhalation valve and an exhalation valve, and the pipeline structure is arranged between the gas outlet of the inhalation valve and the gas delivery device, and / or the pipeline structure is arranged between the gas inlet of the exhalation valve and the gas delivery device, so as to control the noise of the driving process.

[0058] On the other hand, in some embodiments of the present application, a ventilator is also provided, which includes a ventilator body and a ventilation system arranged on the ventilator body. The ventilation system includes a driving mechanism, for example, the driving mechanism can be an air pump or a turbine. The ventilator also includes a pipeline structure as shown in any of the above embodiments. The pipeline structure can be connected to the driving mechanism.

[0059] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0060] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0061] The disclosure above provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A pipeline structure of a medical ventilation device, characterized in that: The invention comprises a main pipeline, a silencer pipeline and a control element for adjusting the pressure or flow of gas flowing in the main pipeline, wherein the main pipeline has an inflow end and an outflow end, and the control element is arranged between the inflow end and the outflow end and has a front end corresponding to the inflow end and a rear end corresponding to the outflow end; Wherein, the silencer pipeline is arranged in a bypass manner between the inflow end of the main pipeline and the control element; and / or the silencer pipeline is arranged in a bypass manner between the outflow end of the main pipeline and the control element; and / or the silencer pipeline is arranged in a bypass manner on a control end branch connected to the control element; and / or the silencer pipeline is arranged in a bypass manner between the front end and the rear end of the control element on the main pipeline; When the silencer pipeline is arranged on the main pipeline, part of the gas flowing in the main pipeline can enter the silencer pipeline and then return to the main pipeline; when the silencer pipeline is arranged on the control end branch, part of the gas flowing in the control end branch can enter the silencer pipeline and then return to the control end branch.

2. The pipeline structure according to claim 1, characterized in that: The silencer pipeline comprises at least one single-frequency silencer pipeline, and the single-frequency silencer pipeline is provided with at least one open end, and at least one of the open ends is communicated with the main pipeline and / or the control end branch.

3. The pipeline structure according to claim 2, characterized in that: The single-frequency silencer pipeline is a first silencer pipeline having a closed end and an open end, wherein the closed end and the open end are respectively arranged at two ends of the first silencer pipeline; The gas flowing into the first silencer pipeline through the open end can be reflected by the closed end and then return to the main pipeline and / or the control end branch.

4. The pipeline structure according to claim 3, characterized in that: The first silencer pipeline is arranged beside the main pipeline and / or the control end branch in a manner of bending back and forth.

5. The pipeline structure according to claim 2, characterized in that: The single-frequency silencer pipeline is a second silencer pipeline provided with two open ends, the two open ends are respectively arranged at two ends of the second silencer pipeline, and are separately arranged along the main pipeline and / or the control end branch; The gas flowing into the second silencer pipeline through one of the opening ends can flow back to the main pipeline and / or the control end branch through the other opening end.

6. The pipeline structure according to claim 5, characterized in that: The second silencer pipeline includes two connecting pipes and a plurality of branch pipes arranged in parallel between the two connecting pipes; the two opening ends are respectively arranged on the two connecting pipes, and the two connecting pipes and the branch pipes respectively form a plurality of flow paths for gas propagation, and the lengths of the plurality of flow paths are the same.

7. The pipeline structure according to claim 5, characterized in that: The second silencer pipeline forms a disc-shaped spiral structure, and two open ends of the disc-shaped spiral structure are separately arranged along the main pipeline.

8. The pipeline structure according to claim 2, characterized in that: The single-frequency silencer pipeline includes a first single-frequency silencer pipeline and a second single-frequency silencer pipeline separately arranged along the main pipeline and / or the control end branch, and the length of the flow path provided by the first single-frequency silencer pipeline is different from the length of the flow path provided by the second single-frequency silencer pipeline.

9. The pipeline structure according to claim 1, characterized in that: The silencer pipeline includes at least one multi-frequency silencer pipeline, and a single multi-frequency silencer pipeline forms multiple flow paths for gas propagation; the multi-frequency silencer pipeline is provided with at least one open end, and at least one of the open ends is connected to the main pipeline and / or the control end branch; at least two of the multiple flow paths formed by the single multi-frequency silencer pipeline have different lengths.

10. The pipeline structure according to claim 9, characterized in that: The multi-frequency silencer pipeline is a third silencer pipeline provided with multiple closed ends and one open end, and a flow path for gas propagation is formed between the open end and each of the closed ends to form the multiple flow paths; the gas flowing into the third silencer pipeline through the open end can be reflected by the multiple closed ends and then return to the main pipeline and / or the control end branch.

11. The pipeline structure according to claim 10, characterized in that: The third silencer pipeline includes a connecting pipe and at least one branch pipe, the connecting pipe includes the open end, the at least one branch pipe is connected to the connecting pipe in a bypass manner, and the connecting pipe and the branch pipe respectively have the closed end.

12. The pipeline structure according to claim 10, characterized in that: The third silencer pipeline includes a connecting pipe and at least one branch pipe, the connecting pipe includes the open end, the at least one branch pipe includes a first branch pipe connected to the connecting pipe in a bypass manner and a second branch pipe connected to the first branch in a bypass manner, the first branch pipe and the second branch pipe respectively have the closed end.

13. The pipeline structure according to claim 9, characterized in that: The multi-frequency silencer pipeline is a fourth silencer pipeline provided with two open ends, the two open ends include an inlet end and an outlet end, and the multiple flow paths for gas propagation are formed between the inlet end and the outlet end; the gas flowing into the fourth silencer pipeline through the inlet end can flow through the multiple flow paths respectively, and then flow through the outlet end to return to the main pipeline and / or the control end branch.

14. The pipeline structure according to claim 13, characterized in that: The fourth silencer pipeline includes two connecting pipes and at least two branch pipes; one connecting pipe of the two connecting pipes includes the inlet end, the other connecting pipe of the two connecting pipes includes the outlet end, and the at least two branch pipes are respectively connected to the two connecting pipes in parallel to form the multiple flow paths.

15. The pipeline structure according to claim 9, characterized in that: The multi-frequency silencer pipeline is a fifth silencer pipeline provided with at least three open ends, and at least one flow path for gas propagation is formed between every two of the at least three open ends to form the multiple flow paths; the gas flowing into the fifth silencer pipeline through one of the open ends can flow through at least one flow path between the open end and the other open ends respectively, and then flow through the other open ends to return to the main pipeline and / or the control end branch.

16. The pipeline structure according to claim 15, characterized in that: The fifth silencing pipeline includes at least three connecting pipes and one branch pipe; each connecting pipe has the open end, and the one branch pipe is connected with each of the connecting pipes at different connecting points.

17. The pipeline structure according to claim 3 or 10, characterized in that: The end surface of the closed end is an irregular surface; preferably, the irregular surface includes one or more combinations of the following: a corrugated surface, a curved surface, an inclined surface and a stepped surface.

18. The pipeline structure according to any one of claims 1 to 16, characterized in that: The silencer pipeline includes a plurality of segmented pipelines with a hollow pipe body, and the plurality of segmented pipelines are connected to form the silencer pipeline; or, the silencer pipeline is an integrated pipeline with a hollow pipe body.

19. The pipeline structure according to claim 1, characterized in that: The single muffler pipe provides a plurality of flow paths for gas propagation; at least two of the plurality of flow paths have different lengths.

20. The pipeline structure according to claim 9 or 19, characterized in that: Different of the flow paths have different lengths.

21. The pipeline structure according to any one of claims 1 to 16, characterized in that: The diameter of the equivalent channel for gas to flow through in the silencer pipeline is 2mm-100mm; and / or the length of the flow path for gas to flow through in the silencer pipeline is 20mm-10000mm.

22. An anesthesia machine, characterized in that: It includes an anesthesia machine body and a ventilation system arranged on the anesthesia machine body, the ventilation system includes a driving mechanism and a gas delivery device, and the driving mechanism is connected to the gas delivery device; the anesthesia machine also includes a pipeline structure as described in any one of claims 1 to 21.

23. The anesthesia machine according to claim 22, characterized in that: The pipeline structure is connected to the ventilation system and is used to connect the driving mechanism and the gas delivery device; the driving mechanism includes an inhalation valve and an exhalation valve, the pipeline structure is arranged between the air outlet of the inhalation valve and the gas delivery device, and / or the pipeline structure is arranged between the air inlet of the exhalation valve and the gas delivery device.

24. A ventilator, characterized in that: It comprises a ventilator body and a ventilation system arranged on the ventilator body, wherein the ventilation system comprises a driving mechanism; the anesthesia machine further comprises a pipeline structure as described in any one of claims 1 to 21, connected to the driving mechanism.

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