Tube structure of medical ventilation equipment and anesthesia machine

Abstract

The application discloses a pipeline structure of a medical ventilation equipment, an anesthesia machine and a breathing machine, wherein a sound attenuation pipeline is arranged on a main pipeline and / or a control end branch pipeline. When sound waves propagate in the sound attenuation pipeline, the main pipeline and / or the control end branch pipeline, the sound waves interact with each other, sound attenuation effect is achieved, and vibration and noise of the pipeline structure are reduced.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to a tubing structure for a medical ventilation device. Background Technology

[0002] Medical ventilation equipment is a common type of medical device, including but not limited to anesthesia machines, ventilators, and integrated anesthesia and ventilator systems. Tubing is an essential component of medical ventilation equipment for gas transmission. However, in some cases, localized resonance can occur between the gas and control components (such as valves) during gas transmission, generating noise. This vibration and noise not only affect the accuracy of airflow control but can also cause discomfort for medical staff and patients due to abnormal vibrations and sounds.

[0003] Application content

[0004] This application provides a tubing structure for a medical ventilation device and an anesthesia machine to reduce vibration and noise during gas transmission in the medical ventilation device.

[0005] Based on the above objectives, one embodiment of this application provides a piping structure for a medical ventilation device, including a main pipe, a silencer pipe, and a control component for adjusting the pressure or flow rate of the gas flowing in the main pipe. The main pipe has an inlet end and an outlet end, and the control component is disposed between the inlet end and the outlet end, and has a front end corresponding to the inlet end and a rear end corresponding to the outlet end.

[0006] Wherein, the silencing pipe is provided in a bypass manner between the inflow end of the main pipe and the control component; and / or the silencing pipe is provided in a bypass manner between the outflow end of the main pipe and the control component; and / or the silencing pipe is provided in a bypass manner between the control component and / or the control end branch connected to the control component; and / or the silencing pipe is provided in a bypass manner between the front end and the rear end of the control component on the main pipe;

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

[0008] To achieve the above objectives, one embodiment of this application provides an anesthesia machine, including an anesthesia machine body and a ventilation system disposed on the anesthesia machine body. The ventilation system includes a drive mechanism and a gas delivery device, and the drive mechanism is connected to the gas delivery device. The anesthesia machine also includes the aforementioned pipeline structure.

[0009] The tubing structure and anesthesia machine shown in the above embodiments have a bypass arrangement of the silencing tubing between the inflow end of the main pipeline and the control unit; and / or a bypass arrangement between the outflow end of the main pipeline and the control unit; and / or a bypass arrangement on the control end branch connected to the control unit; and / or a bypass arrangement between the front and rear ends of the control unit on the main pipeline. When sound waves propagate in the main pipeline and / or the control end branch, a portion of the sound waves enters the silencing tubing and, after propagating a certain distance within the silencing tubing, returns to the main pipeline and / or the control end branch. The sound waves propagating back from the silencing tubing to the main pipeline and / or the control end branch interact with a portion of the original sound waves in the main pipeline and / or the control end branch, achieving a silencing effect and reducing the vibration and noise of the tubing structure.

[0010] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of the silencing pipeline disposed between the inflow end of the main pipeline and the control component in one embodiment of this application;

[0013] Figure 2 This is a schematic diagram of a structure in one embodiment of the present application, showing that the silencer pipeline is disposed between the control component and the outlet end of the main pipeline;

[0014] Figure 3 This is a schematic diagram of the structure in one embodiment of the present application, showing the silencing pipeline disposed between the front and rear ends of the control component;

[0015] Figure 4 and 5 This is a schematic diagram of the structure of the silencer pipe installed in the control end branch of the control component in some embodiments of this application;

[0016] Figure 6 This is a schematic diagram of a structure in one embodiment of this application, in which two single-frequency silencer pipes are arranged side by side on the main pipe;

[0017] Figure 7-9 This is a schematic diagram of the structure of a multi-frequency silencing pipeline installed on the main pipeline in some embodiments of this application. Detailed Implementation

[0018] 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, 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.

[0019] It should also be understood that the terminology used in this application specification is merely for describing specific realities within the scope of this application. It is important to understand that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used solely for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0021] This application discloses a tubing structure in some embodiments for use in medical ventilation equipment, including but not limited to ventilators, anesthesia machines, and respiratory anesthesia machines (i.e., devices that combine anesthesia and respiratory functions), to reduce vibration and noise during gas delivery. This tubing structure can be used to transmit, but is not limited to, inhaled gas for the patient, exhaled gas for the patient, anesthetic gas for the patient, driving gas for controlling the gas delivery device in the ventilator / anesthesia machine / respiratory anesthesia machine, and / or gas for pressure monitoring (such as gas in PEEP tubing, gas in depressurization tubing), etc. The gas delivery device can be, but is not limited to, a pleated bag or a volume reflector, or other similar structures, 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 piping structure includes a main pipeline 100 and a control element 200 for regulating the pressure or flow rate of gas flowing within the main pipeline 100. The control element 200 is disposed on the main pipeline 100, and for example, the control element 200 may 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 inlet end 110 and an outlet end 120, and a control element 200 is disposed between the inlet end 110 and the outlet end 120, and has a front end corresponding to the inlet end 110 and a rear end corresponding to the outlet end 120. The inlet end 110 is the end of the main pipeline 100 from which gas enters, and the outlet end 120 is the end of the main pipeline 100 from which gas flows out. Furthermore, please refer to... Figure 4 and 5 In some embodiments, the control element 200 may also be connected to a control terminal branch 400, which may be used for pressure monitoring, and may be, for example, but not limited to, a PEEP pipeline, a pressure relief pipeline, etc.

[0024] In some cases, during gas transmission, the gas resonates with the control component 200, generating vibration noise. This noise propagates as sound waves in the path formed by the main pipeline 100 and / or the control branch 400. To address this, in some embodiments of this application, the pipeline structure further includes a silencing pipeline 300 connected to the main pipeline 100 and / or the control branch 400. The silencing pipeline 300 can employ various structures capable of vibration reduction and noise reduction. The silencing pipeline 300 can form a bypass relative to the path formed by the main pipeline 100 and / or the control branch 400, allowing a portion of the gas in the main pipeline 100 and / or the control branch 400 to flow into the silencing pipeline 300 and then back from the silencing pipeline 300 to the main pipeline 100 and / or the control branch 400.

[0025] The silencer pipe 300 can be directly connected to the main pipe 100, or directly connected to the control terminal branch pipe 400 on the control component 200. For details, please refer to [link / reference needed]. Figure 1 In some embodiments, the silencer duct 300 is arranged as a bypass between the inflow end 110 of the main duct 100 and the control element 200. Please refer to... Figure 2 In some embodiments, the silencer conduit 300 is arranged as a bypass between the outlet end 120 of the main conduit 100 and the control element 200. Please refer to... Figure 3 In some embodiments, the silencing conduit 300 is arranged in a bypass configuration between the front and rear ends of the control element 200. Please refer to... Figure 4 and 5In some embodiments, the silencing conduit 300 is provided as a bypass on the control terminal branch 400 connected to the control component 200.

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

[0027] The gas within the main pipeline 100, control branch 400, and silencer pipeline 300 serves as a medium for transmitting sound waves, allowing these waves to propagate within these systems. As the sound waves propagate through the main pipeline 100 and / or control branch 400, a portion enters the silencer pipeline 300 and, after traveling a certain distance within it, returns to the main pipeline 100 and / or control branch 400. The flow path formed within the silencer pipeline 300 (i.e., the path formed by the gas flow within it) allows the sound waves propagating back from the silencer pipeline 300 to the main pipeline 100 and control branch 400 to interact with a portion of the original sound waves within these systems, achieving a noise reduction effect and decreasing vibration and noise in the pipeline structure.

[0028] The length of the flow path in the silencing conduit 300 affects the properties of the sound waves propagating back from the silencing conduit 300 to the main pipeline 100 and the control branch 400. Typically, the properties of the sound waves propagating back to the main pipeline 100 and the control branch 400 from flow paths of different lengths are also different. In some embodiments, a silencing conduit 300 can form a flow path of uniform length; therefore, this type of silencing conduit 300 can interact with sound waves of a certain frequency within the original main pipeline 100 and the control branch 400 to achieve a silencing effect. Considering that the sound waves generated in the main pipeline 100 and the control branch 400 may have multiple different frequencies, such as when different types of gas are being transmitted or when a mixture of gases with multiple frequencies is being transmitted, in some embodiments, the silencing pipeline 300 may form at least two flow paths of different lengths. This allows the sound waves in the silencing pipeline 300 to interact with at least two different frequencies of sound waves in the main pipeline 100 and the control branch 400 when they are propagated back to the main pipeline 100 and the control branch 400, thereby improving the silencing effect.

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

[0030] For more specific details, please refer to Figure 1 , 3 In some embodiments, such as 5 and 6, the single-frequency silencing conduit 310 is a first silencing conduit 311 with a closed end 302 and an open end 301, which are respectively located at the two ends of the first silencing conduit 311. Gas flowing into the first silencing conduit 311 through the open end 301 can be reflected by the closed end 302 and return to the main conduit 100 and / or the control branch 400.

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

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

[0033] In addition, please refer to Figure 1 , 3 In some embodiments, the number of single-frequency silencing conduits 310 can be one, thus forming one silencing conduit 300 on the main conduit 100 and / or the control branch 400. In other embodiments, the single-frequency silencing conduit 310 can also be two or more. For example, in Figure 6 In the illustrated embodiment, there are two single-frequency silencing conduits 310, which are connected in parallel to the main conduit 100. Of course, the two single-frequency silencing conduits 310 can also be connected in parallel to the control terminal branch 400.

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

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

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

[0037] In addition, in some other embodiments, there may be at least two branch pipes 314 disposed between the two connecting pipes 313. These at least two branch pipes 314 are connected in parallel between the two connecting pipes 313, forming multiple flow paths for gas propagation with each branch pipe 314 having the same length. Increasing the number of branch pipes 314 results in better noise reduction.

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

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

[0040] More specifically, in some embodiments, the multi-frequency silencing conduit 320 is a third silencing conduit 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. Gas flowing into the third silencing conduit 321 through the open end 301 can return to the main conduit 100 and / or the control end branch 400 after being reflected by the multiple closed ends 302. Similarly, at least two of the multiple flow paths formed by the third silencing conduit 321 have different lengths, allowing the third silencing conduit 321 to be used to eliminate noise of at least two different frequencies.

[0041] For more specific details, please refer to Figure 7In some embodiments, the third silencer conduit 321 includes a connecting conduit 313 and at least one branch conduit 314. The connecting conduit 313 includes an open end 301, through which it communicates with the main conduit 100 (or possibly a control branch conduit 400). The at least one branch conduit 314 is connected to the connecting conduit 313 in a bypass manner, and both the connecting conduit 313 and the branch conduit 314 have closed ends 302. The closed ends 302 of the connecting conduit 313 and the branch conduit 314 can each form flow paths with the open ends 301, and at least two of these flow paths have different lengths. 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. The lengths of these two flow paths are different, that is, the gas entering the multi-frequency silencer pipe 320 has different propagation lengths along the two flow paths.

[0042] exist Figure 7 In the illustrated embodiment, there is one branch pipe 314. In other embodiments, there may be two or more branch pipes 314. When there are two or more branch pipes 314, these branch pipes 314 may be connected at different positions of the connecting pipe 313, for example, they may be arranged side by side in the connecting pipe 313, or they may be arranged around the connecting pipe 313 on different sides. 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. 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 at least two flow paths may have different lengths, or the lengths of the flow paths may all be different.

[0043] In other embodiments, the third silencer conduit 321 includes a connecting conduit 313 and at least one branch conduit 314. The connecting conduit 313 includes an open end 301 and is connected to the main conduit 100 (or a control branch conduit 400) through the open end 301. In this embodiment, the at least one branch conduit 314 includes a first branch conduit (not shown) connected to the connecting conduit 313 in a bypass manner and a second branch conduit (not shown) connected to the first branch conduit in a bypass manner. The connecting conduit 313, the first branch conduit, and the second branch conduit each have a closed end 302. The closed ends 302 of the connecting conduit 313, the first branch conduit, and the second branch conduit 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 provided 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 silencing conduit 320 is a fourth silencing conduit 322 with two open ends 301. The two open ends 301 include an inlet end 301a and an outlet end 302b, forming multiple flow paths for gas propagation between the inlet end 301a and the outlet end 302b. At least two of these flow paths have different lengths. Gas flowing into the fourth silencing conduit 322 through the inlet end 301a can flow through each of the multiple flow paths before returning to the main conduit 100 and / or the control branch 400 via the outlet end 302b. Similarly, the fact that at least two of the multiple flow paths formed by the fourth silencing conduit 322 have different lengths allows the fourth silencing conduit 322 to be used to eliminate noise of at least two different frequencies.

[0046] Please refer to Figure 9 In some embodiments, the fourth silencing conduit 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. At least two branch pipes 314 are connected in parallel to the two connecting pipes 313 to form multiple flow paths, wherein at least two flow paths have different lengths. The connecting pipes 313 and the at least two branch pipes 314 can each form a flow path, and at least two of the formed at least two flow paths have different lengths. Figure 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 these two flow paths are different, that is, the gas entering the multi-frequency silencer pipe 320 has different propagation lengths along the two flow paths.

[0047] exist Figure 9 In the fourth silencer conduit 322 shown, the two connecting pipes 313 are arranged side by side on the main pipeline 100 (or the control branch 400). In other embodiments, the two connecting pipes 313 may also be connected to the main pipeline 100 and / or the control branch 400 in other ways.

[0048] In some embodiments, the multi-frequency silencing conduit 320 is a fifth silencing conduit 323 having at least three open ends 301, with at least one flow path for gas propagation formed between every two open ends 301. At least two of these flow paths have different lengths. Gas flowing into the fifth silencing conduit 323 through one open end 301 can flow through at least one flow path between that open end 301 and other open ends 301, and then return to the main conduit 100 and / or the control branch 400 through the other open ends 301. In this embodiment, the fifth silencing conduit 323, with at least two flow paths of different lengths formed between every two open ends, allows the fifth silencing conduit 323 to be used to eliminate noise of at least two different frequencies.

[0049] For more specific details, please refer to Figure 8 In some embodiments, the fifth silencing conduit 323 includes at least three connecting conduits 313 and one branch conduit 314; each connecting conduit 313 has an open end 301, and the branch conduit 314 connects to each connecting conduit 313 at different connection points. Figure 8 In the specific example shown, from Figure 8 The two connecting pipes 313 located on the left and in the middle, together with a portion of the branch pipes 314, form a flow path. Figure 8 The two connecting pipes 313 on the left and right sides form another flow path with all the branch pipes 314, and the lengths of these two flow paths are different, that is, the gas entering the multi-frequency silencer pipe 320 has different propagation lengths along the two flow paths.

[0050] As Figure 8 Modified embodiments, Figure 8 The two connecting pipes 313 located on the left and in the middle can be connected by a branch pipe 314 to form a flow path; Figure 8 The two connecting pipes on the left and right sides can be connected by another branch pipe 314 to form another flow path. Figure 8 Another modified embodiment, in Figure 8 Two or more branch pipes can be connected in parallel between the three connecting pipes 313; taking two branch pipes in parallel as an example, from Figure 8 The two connecting pipes 313 located on the left and in the middle, together with a portion of each of the two branch pipes, form two flow paths. Figure 8 The two connecting pipes 313 on the left and right sides, together with the two branch pipes 314, form two other flow paths.

[0051] In some embodiments, the number of multi-frequency silencing conduits 320 may be one, thereby forming one silencing conduit 300 on the main line 100 and / or the control end branch 400. In other embodiments, the multi-frequency silencing conduits 320 may also be two or more. When there are at least two multi-frequency silencing conduits 320, at least two multi-frequency silencing conduits 320 are connected side-by-side to the main line 100 and / or the control end branch, and the two multi-frequency silencing conduits 320 may have different pipe structures, so that the flow paths they provide are at least partially different in length.

[0052] On the other hand, besides such Figure 7-9 As shown, in addition to forming a multi-frequency noise-reducing conduit 320 using different pipe sections, in some embodiments, two or more flow paths of different lengths can be formed by changing the end face shape of the closed end 302. For example, in some examples, in Figure 1 , 3 In the embodiments shown in 5 and 6, the end face of the closed end 302 is designed as an irregular surface (i.e., a plane not perpendicular to the flow path). Preferably, in some embodiments, the irregular surface includes one or more combinations of the following: a corrugated surface, an arcuate surface, an inclined surface, and a stepped surface. When the closed end 302 is an irregular surface, the flow path length formed by each region of the closed end 302 relative to the open end 301 is different. Therefore, 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 to interact with at least two frequencies of sound waves 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 branch pipe 314 can also be configured as an irregular surface, so that the closed end 302 of the connecting pipe 313 and / or branch pipe 314 can further form more flow paths of different lengths relative to the open end.

[0053] Furthermore, in some embodiments, the silencing conduit 300 includes multiple segmented pipes having hollow pipe bodies, the multiple segmented pipes being connected to form the silencing conduit 300. For example, in Figure 1-8 In the illustrated embodiment, the connecting pipe 313 and the branch pipe 314 are separate segmented pipes, which are then fixedly connected into a whole through a fixing process. The fixing method can be, but is not limited to, welding, bonding, screwing, snap-fitting, or fixing with fasteners. Of course, in other embodiments, the silencing pipe 300 can also be an integral pipe with a hollow pipe body, for example, formed into an integral structure by injection molding, casting, 3D printing, etc.

[0054] Taking a noise-reducing pipeline composed of pipes with a back-and-forth bending pattern as an example, it consists of multiple straight pipe sections and curved pipe sections. The straight pipe sections are connected by the curved pipe sections to form a bending pattern; multiple curved pipe sections are connected to the straight pipe sections to form a back-and-forth bending pattern.

[0055] Furthermore, in some embodiments, the equivalent channel diameter for gas flow within the silencer pipe 300 is 2mm-100mm, preferably 2mm-30mm. Here, the equivalent channel diameter refers to the diameter when the channel cross-section is equivalent to a circular cross-section. That is, the silencer pipe of this application is not limited to using a pipe with a circular cross-section. And / or, in some embodiments, the flow path length for gas flow within the silencer pipe 300 is 20mm-10000mm, preferably 20mm-3000mm. Here, the flow path length refers to the length of the gas flow within the silencer pipe.

[0056] On the other hand, in some embodiments of this application, an anesthesia machine is also provided, which includes an anesthesia machine body and a ventilation system disposed on the anesthesia machine body. The ventilation system includes a drive mechanism and a gas delivery device, the drive mechanism being connected to the gas delivery device and driving the gas delivery device to deliver gas. For example, the drive mechanism may be an air pump or other structure capable of driving the output device. The gas delivery device may employ, but is not limited to, a pleated bag, a volume reflector, or other structures applicable to the breathing circuit of an anesthesia machine for supplying gas to the patient. Furthermore, the anesthesia machine also includes a tubing structure as shown in any of the above embodiments. This tubing structure can be used to transmit, but is not limited to, inhaled gas for the patient, exhaled gas for the patient, anesthetic gas for the patient, drive gas for controlling the operation of the gas delivery device in a ventilator or respiratory anesthesia machine, and / or gas for pressure monitoring (such as gas in a PEEP line, gas in a depressurization line), etc.

[0057] Furthermore, in some embodiments, the aforementioned piping structure is connected to the ventilation system and serves to connect the drive mechanism and the gas delivery device. The drive mechanism pressurizes or depressurizes the gas delivery device using driving gas. The drive mechanism includes an inhalation valve and an exhalation valve, with the piping structure positioned between the outlet of the inhalation valve and the gas delivery device, and / or between the inhalation valve's inlet and the gas delivery device, thereby controlling noise during the drive process.

[0058] On the other hand, in some embodiments of this application, a ventilator is also provided, which includes a ventilator body and a ventilation system disposed on the ventilator body. The ventilation system includes a drive mechanism, such as an air pump or a turbine. The ventilator also includes a tubing structure as shown in any of the above embodiments. This tubing structure can be connected to the drive mechanism.

[0059] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An anesthesia machine, characterized in that, The device includes an anesthesia machine body and a ventilation system disposed on the anesthesia machine body. The ventilation system includes a drive mechanism and a gas delivery device, and the drive mechanism is connected to the gas delivery device. The anesthesia machine also includes a tubing structure. The pipeline structure includes a main pipeline, a silencer pipeline, and a control component for regulating the pressure or flow rate of the gas flowing in the main pipeline. The control component is a gas valve. The main pipeline has an inlet end and an outlet end. The control component is disposed between the inlet end and the outlet end and has a front end corresponding to the inlet end and a rear end corresponding to the outlet end. The silencing pipeline is provided in a bypass manner between the inflow end of the main pipeline and the control component, and / or the silencing pipeline is provided in a bypass manner between the front end and the rear end of the control component on the main pipeline, so as to reduce the vibration and noise caused by the resonance between the gas and the gas valve during gas transmission. When the silencer pipe is installed on the main pipe, some of the gas flowing in the main pipe can enter the silencer pipe and then return to the main pipe.

2. The anesthesia machine according to claim 1, characterized in that, The silencing pipeline includes at least one single-frequency silencing pipeline, and the single-frequency silencing pipeline is provided with at least one open end, and at least one of the open ends is connected to the main pipeline.

3. The anesthesia machine according to claim 2, characterized in that, The single-frequency silencing pipeline is a first silencing pipeline with a closed end and an open end, wherein the closed end and the open end are respectively disposed at two ends of the first silencing pipeline; Gas flowing into the first silencer pipe through the open end can be reflected back to the main pipe after being closed.

4. The anesthesia machine according to claim 3, characterized in that, The first silencing duct is installed on the side of the main duct in a back-and-forth bending manner.

5. The anesthesia machine according to claim 2, characterized in that, The single-frequency silencing pipeline is a second silencing pipeline with two open ends. The two open ends are respectively located at the two ends of the second silencing pipeline and are arranged separately along the main pipeline. Gas flowing into the second silencer pipe through one of the openings can return to the main pipe through the other opening.

6. The anesthesia machine according to claim 5, characterized in that, The second silencer pipeline includes two connecting pipes and multiple branch pipes arranged in parallel between the two connecting pipes; the two opening ends are respectively provided on the two connecting pipes, and the two connecting pipes and each branch pipe form multiple flow paths for gas propagation, and the multiple flow paths are of the same length.

7. The anesthesia machine according to claim 5, characterized in that, The second silencer pipe forms a disc-shaped spiral structure, with the two open ends of the disc-shaped spiral structure arranged separately along the main pipe.

8. The anesthesia machine according to claim 2, characterized in that, The single-frequency silencing pipeline includes a first single-frequency silencing pipeline and a second single-frequency silencing pipeline separately arranged along the main pipeline. The length of the flow path provided by the first single-frequency silencing pipeline is different from the length of the flow path provided by the second single-frequency silencing pipeline.

9. The anesthesia machine according to claim 1, characterized in that, The silencing pipeline includes at least one multi-frequency silencing pipeline, and a single multi-frequency silencing pipeline forms multiple flow paths for gas propagation; the multi-frequency silencing pipeline is provided with at least one open end, and at least one open end is connected to the main pipeline; at least two flow paths in a single multi-frequency silencing pipeline have different lengths.

10. The anesthesia machine according to claim 9, characterized in that, The multi-frequency silencing pipeline is a third silencing pipeline with multiple closed ends and one open end. The open end and each of the closed ends form a flow path for gas propagation. Gas flowing into the third silencing pipeline through the open end can be reflected by the multiple closed ends and return to the main pipeline.

11. The anesthesia machine according to claim 10, characterized in that, The third silencing pipeline includes a connecting pipe and at least one branch pipe. The connecting pipe includes the open end, and the at least one branch pipe is connected to the connecting pipe in a bypass manner. The connecting pipe and the branch pipe each have the closed end.

12. The anesthesia machine 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 that is connected to the connecting pipe in a bypass manner and a second branch pipe that is connected to the first branch pipe in a bypass manner. The first branch pipe and the second branch pipe each have the closed end.

13. The anesthesia machine according to claim 9, characterized in that, The multi-frequency silencing pipeline is a fourth silencing pipeline with two open ends. The two open ends include an inlet end and an outlet end. Multiple flow paths for gas propagation are formed between the inlet end and the outlet end. Gas flowing into the fourth silencing pipeline through the inlet end can flow through the multiple flow paths and then return to the main pipeline through the outlet end.

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

15. The anesthesia machine according to claim 9, characterized in that, The multi-frequency silencing pipeline is a fifth silencing pipeline with at least three open ends. At least one flow path for gas propagation is formed between every two open ends of the at least three open ends. Gas flowing into the fifth silencing pipeline through one of the open ends can flow through at least one flow path between that open end and other open ends, and then flow through other open ends back to the main pipeline.

16. The anesthesia machine 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 branch pipe is connected to each of the connecting pipes at different connection points.

17. The anesthesia machine according to claim 3 or 10, characterized in that, The end face of the closed end is an irregular surface.

18. The anesthesia machine according to claim 17, characterized in that, The irregular surface includes one or more combinations of the following: corrugated surface, curved surface, inclined surface, and stepped surface.

19. The anesthesia machine according to any one of claims 1 to 16, characterized in that, The silencing pipeline includes multiple segmented pipes with hollow pipe bodies, and the multiple segmented pipes are connected to form the silencing pipeline; or, the silencing pipeline is an integral pipeline with hollow pipe bodies.

20. The anesthesia machine according to claim 1, characterized in that, Each of the silencing conduits provides multiple flow paths for gas propagation; at least two of the multiple flow paths have different lengths.

21. The anesthesia machine according to claim 9 or 20, characterized in that, The lengths of the different flow paths are different.

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

23. The anesthesia machine according to claim 1, characterized in that, The valve is either an inhalation valve or an exhalation valve.

24. A ventilator, characterized in that, The device includes a ventilator body and a ventilation system disposed on the ventilator body, the ventilation system including a drive mechanism; the ventilator also includes a tubing structure connected to the drive mechanism. The pipeline structure includes a main pipeline, a silencer pipeline, and a control component for regulating the pressure or flow rate of the gas flowing in the main pipeline. The control component is a gas valve. The main pipeline has an inlet end and an outlet end. The control component is disposed between the inlet end and the outlet end and has a front end corresponding to the inlet end and a rear end corresponding to the outlet end. The silencing pipeline is provided in a bypass manner between the inflow end of the main pipeline and the control component, and / or the silencing pipeline is provided in a bypass manner between the front end and the rear end of the control component on the main pipeline, so as to reduce the vibration and noise caused by the resonance between the gas and the gas valve during gas transmission. When the silencer pipe is installed on the main pipe, some of the gas flowing in the main pipe can enter the silencer pipe and then return to the main pipe.

25. The ventilator according to claim 24, characterized in that, The silencing pipeline includes at least one single-frequency silencing pipeline, and the single-frequency silencing pipeline is provided with at least one open end, and at least one of the open ends is connected to the main pipeline.

26. The ventilator according to claim 25, characterized in that, The single-frequency silencing pipeline is a first silencing pipeline with a closed end and an open end, wherein the closed end and the open end are respectively disposed at two ends of the first silencing pipeline; Gas flowing into the first silencer pipe through the open end can be reflected back to the main pipe after being closed.

27. The ventilator according to claim 26, characterized in that, The first silencing duct is installed on the side of the main duct in a back-and-forth bending manner.

28. The ventilator according to claim 25, characterized in that, The single-frequency silencing pipeline is a second silencing pipeline with two open ends. The two open ends are respectively located at the two ends of the second silencing pipeline and are arranged separately along the main pipeline. Gas flowing into the second silencer pipe through one of the openings can return to the main pipe through the other opening.

29. The ventilator according to claim 28, characterized in that, The second silencer pipeline includes two connecting pipes and multiple branch pipes arranged in parallel between the two connecting pipes; the two opening ends are respectively provided on the two connecting pipes, and the two connecting pipes and each branch pipe form multiple flow paths for gas propagation, and the multiple flow paths are of the same length.

30. The ventilator according to claim 28, characterized in that, The second silencer pipe forms a disc-shaped spiral structure, with the two open ends of the disc-shaped spiral structure arranged separately along the main pipe.

31. The ventilator according to claim 25, characterized in that, The single-frequency silencing pipeline includes a first single-frequency silencing pipeline and a second single-frequency silencing pipeline separately arranged along the main pipeline. The length of the flow path provided by the first single-frequency silencing pipeline is different from the length of the flow path provided by the second single-frequency silencing pipeline.

32. The ventilator according to claim 24, characterized in that, The silencing pipeline includes at least one multi-frequency silencing pipeline, and a single multi-frequency silencing pipeline forms multiple flow paths for gas propagation; the multi-frequency silencing pipeline is provided with at least one open end, and at least one open end is connected to the main pipeline; at least two flow paths in a single multi-frequency silencing pipeline have different lengths.

33. The ventilator according to claim 32, characterized in that, The multi-frequency silencing pipeline is a third silencing pipeline with multiple closed ends and one open end. The open end and each of the closed ends form a flow path for gas propagation. Gas flowing into the third silencing pipeline through the open end can be reflected by the multiple closed ends and return to the main pipeline.

34. The ventilator according to claim 33, characterized in that, The third silencing pipeline includes a connecting pipe and at least one branch pipe. The connecting pipe includes the open end, and the at least one branch pipe is connected to the connecting pipe in a bypass manner. The connecting pipe and the branch pipe each have the closed end.

35. The ventilator according to claim 33, 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 that is connected to the connecting pipe in a bypass manner and a second branch pipe that is connected to the first branch pipe in a bypass manner. The first branch pipe and the second branch pipe each have the closed end.

36. The ventilator according to claim 32, characterized in that, The multi-frequency silencing pipeline is a fourth silencing pipeline with two open ends. The two open ends include an inlet end and an outlet end. Multiple flow paths for gas propagation are formed between the inlet end and the outlet end. Gas flowing into the fourth silencing pipeline through the inlet end can flow through the multiple flow paths and then return to the main pipeline through the outlet end.

37. The ventilator according to claim 36, characterized in that, The fourth silencing pipeline includes two connecting pipes and at least two branch pipes; one connecting pipe of the two connecting pipes includes the inlet end, and the other connecting pipe of the two connecting pipes includes the outlet end; the at least two branch pipes are connected to the two connecting pipes in parallel to form multiple flow paths.

38. The ventilator according to claim 32, characterized in that, The multi-frequency silencing pipeline is a fifth silencing pipeline with at least three open ends. At least one flow path for gas propagation is formed between every two open ends of the at least three open ends. Gas flowing into the fifth silencing pipeline through one of the open ends can flow through at least one flow path between that open end and other open ends, and then flow through other open ends back to the main pipeline.

39. The ventilator according to claim 38, 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 branch pipe is connected to each of the connecting pipes at different connection points.

40. The ventilator according to claim 26 or 33, characterized in that, The end face of the closed end is an irregular surface.

41. The ventilator according to claim 40, characterized in that, The irregular surface includes one or more combinations of the following: corrugated surface, curved surface, inclined surface, and stepped surface.

42. The ventilator according to any one of claims 24 to 39, characterized in that, The silencing pipeline includes multiple segmented pipes with hollow pipe bodies, and the multiple segmented pipes are connected to form the silencing pipeline; or, the silencing pipeline is an integral pipeline with hollow pipe bodies.

43. The ventilator according to claim 24, characterized in that, Each of the silencing conduits provides multiple flow paths for gas propagation; at least two of the multiple flow paths have different lengths.

44. The ventilator according to claim 32 or 43, characterized in that, The lengths of the different flow paths are different.

45. The ventilator according to any one of claims 24 to 39, characterized in that, The equivalent channel diameter for gas flow within the silencer pipeline is 2mm-100mm; and / or, the flow path length for gas flow within the silencer pipeline is 20mm-10000mm.

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