Pressure relief device for pipeline connection of anaesthesia machine and oxygen generator

Abstract

The utility model is applicable to the technical field of medical equipment, and provides a pressure relief device for pipeline connection of an anaesthesia machine and an oxygenerator, which comprises a connecting main body, a pressure relief valve and a pressure relief valve, the connecting main body is provided with an air outlet end for connecting the anaesthesia machine and an air inlet end for connecting the oxygenerator, and an inner cavity of the connecting main body is communicated with the air inlet end and the air outlet end; the valve main body is connected with the connecting main body, and a through cavity channel is formed in the valve main body; the valve element comprises a sealing plug and a core shaft extending out of one end of the sealing plug, the sealing plug is matched with the sealing area, and the core shaft extends into the movable area; the spring is arranged on the core shaft in a sleeving manner; the spring seat is arranged on the mandrel, one end of the spring abuts against the spring seat, and the other end of the spring abuts against the boss. When the air pressure in the connecting body is larger than the elastic force of the spring, the valve element is separated from the valve body, the through cavity is communicated with the outside, the air pressure in the connecting body is rapidly reduced, the structure is simple, the air pressure in the connecting body can be adjusted, and the air pressure in the connecting body is prevented from being too large.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and particularly relates to a pressure relief device for connecting the pipelines of an anesthetic machine and an oxygen generator. Background Art

[0002] A pressure relief device for a ventilator is a device used to adjust the airway pressure of the ventilator. By controlling the airway pressure through the pressure relief device of the ventilator, it ensures that the patient's breathing is smooth and stable. The pressure relief device for the ventilator is mainly used in medical institutions such as intensive care units, emergency departments, and operating rooms.

[0003] Regarding the problem that the failure of the oxygen generator may be caused by the untimely discharge of oxygen, the existing device is provided with a valve, a controller, and a sensor. The controller controls the energization or de-energization of the coil, and then controls the upward or downward movement of the electromagnet. The electromagnet drives the valve to move up and down, thereby controlling the state of the pressure relief channel communicating with or being closed to the outside. When the pressure relief channel communicates with the outside, the gas in the pipeline is discharged, reducing the air pressure in the pipeline. When the pressure relief channel is closed to the outside, the pressure relief channel is in a normal working state.

[0004] When the existing pressure relief device adjusts the air pressure, it controls the energization or de-energization of the coil through the controller, and then controls the up and down movement of the electromagnet. Finally, the connection or closure of the pressure relief channel is realized through the valve. Multiple interlocking components such as the coil, solenoid valve, and valve need to be used in cooperation to realize the connection or closure of the pressure relief channel. The structure is complex, and the pressure relief channel cannot be connected to the outside in time, resulting in damage to the oxygen generator and anesthetic machine.

[0005] In summary, there is an urgent need for a new pressure relief device to solve the problem that the existing pressure relief device cannot connect the pressure relief channel to the outside in time due to its complex structure, resulting in damage to the oxygen generator and anesthetic machine. Summary of the Utility Model

[0006] The utility model provides a pressure relief device for connecting the pipelines of an anesthetic machine and an oxygen generator, aiming to solve the problem that the existing pressure relief device cannot connect the pressure relief channel to the outside in time due to its complex structure, resulting in damage to the oxygen generator and anesthetic machine.

[0007] The utility model is realized as follows. A pressure relief device for connecting the pipelines of an anesthetic machine and an oxygen generator includes:

[0008] A connection main body, on which an air outlet end for connecting an anesthetic machine and an air inlet end for connecting an oxygen generator are provided, and the inner cavity of the connection main body communicates with the air inlet end and the air outlet end;

[0009] A valve body connected to the connection body, wherein a through-channel is provided on the valve body, the through-channel includes a sealing area and a movable area, a connecting surface between the sealing area and the movable area forms a boss facing the movable area, and the movable area communicates with the inner cavity of the connection body;

[0010] A valve core, the valve core includes a sealing plug and a core shaft extending from one end of the sealing plug, the sealing plug is adapted to the sealing area, and the core shaft extends into the movable area;

[0011] A spring, the spring is sleeved on the core shaft;

[0012] A spring seat, the spring seat is arranged on the core shaft, one end of the spring abuts against the spring seat, and the other end abuts against the boss.

[0013] Optionally, the sealing area is a flared opening, and the large end of the flared opening faces the outside.

[0014] Optionally, the core shaft is threadedly connected to the spring seat.

[0015] Optionally, the connection body and the valve body are threadedly connected.

[0016] Optionally, a sealing structure is provided between the connection body and the valve body.

[0017] Optionally, a sealing structure is provided between the sealing plug and the sealing area.

[0018] Optionally, a tower joint is provided at the air inlet end.

[0019] Optionally, an anesthesia machine connector is provided at the air outlet end, and a sealing structure is provided on the anesthesia machine connector.

[0020] The beneficial effects achieved by the present utility model are as follows: Since a valve body is provided on the connection body, a through-channel is provided in the valve body, a valve core is provided in the through-channel, and a spring is sleeved on the valve core, the valve core is tightly attached to the valve body by the elastic force of the spring, avoiding the through-channel from communicating with the outside. When the gas pressure in the connection body is greater than the elastic force of the spring, the valve core is separated from the valve body, enabling the through-channel to communicate with the outside, quickly reducing the air pressure in the connection body. The structure is simple, the air pressure in the connection body can be adjusted, and the air pressure in the connection body can be prevented from being too large. Brief Description of the Drawings

[0021] Figure 1 is a split structural schematic diagram of the pressure relief device provided by the present utility model for connecting the pipelines of an anesthesia machine and an oxygen generator;

[0022] Figure 2 is a cross-sectional schematic diagram of the pressure relief device provided by the present utility model for connecting the pipelines of an anesthesia machine and an oxygen generator;

[0023] Figure 3 It is a schematic structural diagram of the valve body provided by the present utility model.

[0024] Explanation of reference numerals in the drawings:

[0025] 100. A pressure relief device for connecting the pipelines of an anesthesia machine and an oxygen generator;

[0026] 101. A connection main body; 1011. An air inlet end; 1012. An air outlet end; 102. A valve body; 1021. A sealing area; 1022. An active area; 1023. A boss; 103. A valve core; 1031. A sealing plug; 1032. A core shaft; 104. A spring; 105. A spring seat; 106. A stepped joint; 107. An anesthesia machine connector. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and cannot be construed as a limitation to the present utility model. In addition, it should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection, an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above" and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below" and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0031] In this embodiment of the present utility model, a valve body is provided on the connection body. A through-channel is provided in the valve body, and a valve core is arranged in the through-channel. A spring is sleeved on the valve core. The elastic force of the spring makes the valve core fit tightly with the valve body, avoiding the through-channel communicating with the outside. When the gas pressure in the connection body is greater than the elastic force of the spring, the valve core is separated from the valve body, enabling the through-channel to communicate with the outside, rapidly reducing the air pressure in the connection body. The structure is simple, and it can adjust the air pressure in the connection body to avoid excessive air pressure in the connection body.

[0032] Embodiment 1

[0033] As Figures 1 to 3 shown, this embodiment provides a pressure relief device 100 for connecting the pipelines of an anesthesia machine and an oxygen generator, which is characterized by including:

[0034] A connection body 101, on which an air outlet end 1012 for connecting an anesthesia machine and an air inlet end 1011 for connecting an oxygen generator are provided. The inner cavity of the connection body 101 communicates with the air inlet end 1011 and the air outlet end 1012;

[0035] A valve body 102 connected to the connection body 101, on which a through-channel is provided. The through-channel includes a sealing area 1021 and a movable area 1022. The connection surface between the sealing area 1021 and the movable area 1022 forms a convex platform 1023 facing the movable area 1022, and the movable area 1022 communicates with the inner cavity of the connection body 101;

[0036] A valve core 103, which includes a sealing plug 1031 and a core shaft 1032 extending from one end of the sealing plug 1031. The sealing plug 1031 is adapted to the sealing area 1021, and the core shaft 1032 extends into the movable area 1022;

[0037] A spring 104, which is sleeved on the core shaft 1032;

[0038] The spring seat 105 is arranged on the mandrel 1032. One end of the spring 104 abuts against the spring seat 105, and the other end abuts against the boss 1023.

[0039] Among them, the spring 104 is in a compressed state.

[0040] The air outlet end 1012 and the air inlet end 1011 of the connection main body 101 are respectively connected to an anesthesia machine and an oxygen generator. The inner cavity of the connection main body 101 communicates with the air outlet end 1012 and the air inlet end 1011. The oxygen produced by the oxygen generator enters the anesthesia machine through the connection main body 101, and after being mixed with anesthetic drugs in the anesthesia machine, it is delivered to the patient.

[0041] The valve main body 102 is connected to the connection main body 101, and the through cavity provided on the valve main body 102 communicates with the inner cavity of the connection main body 101. The through cavity includes a sealing area 1021 and a movable area 1022. The sealing area 1021 and the movable area 1022 are arranged adjacent to each other and communicate with each other. The movable area 1022 communicates with the inner cavity of the connection main body 101, and the sealing area 1021 communicates with the outside. At the connection between the sealing area 1021 and the movable area 1022, the cross-section of the inner cavity of the sealing area 1021 at this connection is smaller than the cross-section of the inner cavity of the movable area 1022 at this connection, forming a boss 1023 facing the movable area 1022.

[0042] The valve core 103 is arranged in the through cavity. The valve core 103 includes a sealing plug 1031 and a mandrel 1032. The sealing plug 1031 can move in the sealing area 1021 to block or open the sealing area 1021. One end of the sealing plug 1031 facing the movable area 1022 extends the mandrel 1032 towards the movable area 1022, and the mandrel 1032 moves in the movable area 1022. A spring seat 105 is arranged on the side of the mandrel 1032 away from the sealing plug 1031. A spring 104 is sleeved on the mandrel 1032. The spring 104 is placed between the spring seat 105 and the boss 1023, with one end abutting against the spring seat 105 and the other end abutting against the boss 1023.

[0043] As Figure 2 and Figure 3 shown, the through cavity is arranged vertically, and the sealing area 1021 is located above the movable area 1022. Initially, the sealing plug 1031 blocks the sealing area 1021, isolating the through cavity from the outside. At this time, the spring 104 is in its original length or a compressed state. Since the through cavity communicates with the inner cavity of the connection main body 101, the pressure in the through cavity is the same as the pressure in the inner cavity of the connection main body 101.

[0044] Due to the action of the spring 104, when the valve core 103 moves upward, it drives the spring seat 105 to move upward as well. The distance between the spring seat 105 and the boss 1023 decreases, and the spring 104 is compressed. Therefore, the upward movement of the valve core 103 needs to overcome the elastic force of the deformation of the spring 104. When the pressure in the inner cavity of the connection body 101 rises, the increased pressure acts on the valve core 103 and the spring seat 105, pushing the valve core 103 upward.

[0045] Regarding the valve core 103 and the spring seat 105 as a whole, this whole is subject to the downward elastic force exerted by the spring 104, the upward thrust exerted by the gas in the inner cavity of the connection body 101 and the through-channel, and the upward supporting force exerted by the valve body 102 (since the valve core 103 is usually small, the gravity is negligible). The directions of the supporting force and the thrust are the same, while the directions of the elastic force and the thrust are opposite. In the closed state, the elastic force = the supporting force + the thrust, and the valve core 103 remains stationary, with the sealing plug 1031 blocking the sealing area 1021.

[0046] As the pressure in the inner cavity of the connection body 101 rises, the thrust increases while the supporting force decreases. At this time, it is still the case that the elastic force = the supporting force + the thrust, and the valve core 103 remains stationary, with the sealing plug 1031 blocking the sealing area 1021.

[0047] When the pressure in the inner cavity of the connection body 101 continues to rise, the thrust continues to increase, while the supporting force decreases to 0. When the elastic force is less than the thrust, the valve core 103 is pushed upward, and the plug separates from the sealing area 1021. The inner cavity of the connection body 101 is connected to the outside through the through-channel, and the gas accumulated in the inner cavity of the connection body 101 is discharged.

[0048] After the gas in the inner cavity of the connection body 101 is discharged, the pressure in the inner cavity of the connection body 101 decreases, the thrust acting on the valve core 103 and the spring seat 105 decreases, and the valve core 103 returns to its initial position to block the sealing area 1021.

[0049] It can be understood that in order to prevent the spring seat 105 from blocking the through-channel, the outer diameter of the spring seat 105 can be smaller than the inner diameter of the active area 1022, or through-grooves or through-holes for ventilation can be provided on the spring seat 105.

[0050] In this embodiment, a valve body 102 is provided on the connection main body 101. A through cavity is provided in the valve body 102, and a valve core 103 is arranged in the through cavity. A spring 104 is sleeved on the valve core 103. The elastic force of the spring 104 makes the valve core 103 closely fit with the valve body 102, preventing the through cavity from communicating with the outside. When the gas pressure in the connection main body 101 is greater than the elastic force of the spring 104, the valve core 103 is separated from the valve body 102, enabling the through cavity to communicate with the outside and rapidly reducing the air pressure in the connection main body 101. The structure is simple, capable of adjusting the air pressure in the connection main body 101 and preventing the air pressure in the connection main body 101 from being too high.

[0051] Embodiment Two

[0052] As Figure 2 and Figure 3 shown, on the basis of Embodiment One, the sealing area 1021 is a flared opening, and the large end of the flared opening faces the outside.

[0053] The sealing area 1021 is a flared opening, that is, the inner wall of the sealing area 1021 forms an inclined surface. The large end of the flared opening faces the outside, and the small end of the flared opening faces the active area 1022. The sealing plug 1031 is adapted to the sealing area 1021. The sealing plug 1031 is set in a funnel shape adapted to the flared opening. The large end of the sealing plug 1031 cannot move towards the small end of the flared opening, providing a limit for the valve core 103. Moreover, the contact surface between the sealing plug 1031 and the sealing area 1021 is an inclined surface, with a large contact area and good sealing effect.

[0054] Embodiment Three

[0055] On the basis of Embodiment One, the core shaft 1032 is threadedly connected to the spring seat 105.

[0056] External threads are provided on the valve core 103, and internal threads adapted to the external threads on the core shaft 1032 are provided on the spring seat 105. The spring seat 105 is threadedly connected to the core shaft 1032, facilitating disassembly, assembly, replacement, or maintenance. If the number of turns of the spring seat 105 screwed onto the core shaft 1032 is different, the distance between the spring seat 105 and the boss 1023 is different, resulting in different compression deformations of the spring 104 in the initial state, and thus different elastic forces generated by the spring 104. By adjusting the number of turns of the spring seat 105 screwed onto the core shaft 1032, the elastic force of the spring 104 can be adjusted, and further the preset air pressure value in the inner cavity of the connection main body 101 can be adjusted. When the air pressure in the inner cavity of the connection main body 101 exceeds the preset air pressure value, the valve core 103 opens and starts to release pressure.

[0057] Embodiment Four

[0058] On the basis of Embodiment One, the connection main body 101 and the valve body 102 are threadedly connected.

[0059] The connecting body 101 and the valve body 102 are threadedly connected. Specifically, external threads can be provided on the connecting body 101 and internal threads can be provided on the valve body 102, and the connecting body 101 is screwed into the valve body 102. Alternatively, internal threads can be provided on the connecting body 101 and external threads can be provided on the valve body 102, and the valve body 102 is screwed into the connecting body 101.

[0060] The threads facilitate disassembly and assembly, making it convenient to replace and repair components. Moreover, the threads have good sealing performance, which can effectively prevent air leakage at the connection position between the connecting body 101 and the valve body 102.

[0061] Embodiment Five

[0062] On the basis of Embodiment One, a sealing structure is provided between the connecting body 101 and the valve body 102.

[0063] The sealing structure can specifically be an O-ring, sealant, or other structures for achieving sealing, ensuring the airtightness between the connecting body 101 and the valve body 102 and preventing air leakage at the connection position between the connecting body 101 and the valve body 102.

[0064] Embodiment Six

[0065] On the basis of Embodiment One, a sealing structure is provided between the sealing plug 1031 and the sealing area 1021.

[0066] The sealing structure can specifically be an O-ring, sealant, or other structures for achieving sealing, ensuring the airtightness between the connecting body 101 and the valve body 102 and preventing air leakage at the connection position between the connecting body 101 and the valve body 102.

[0067] Embodiment Seven

[0068] On the basis of Embodiment One, a flare fitting 106 is provided at the air inlet end 1011.

[0069] The flare fitting 106 is a commonly used connector for quick connection of hydraulic oil circuits and pneumatic pipelines. The connected pipelines are mostly flexible pipelines, which are convenient for loading and unloading and have reliable performance. Since the pipelines of the oxygen generator are mostly flexible pipelines, using the flare fitting 106 for connection facilitates the connection of the air inlet end 1011 to different oxygen generator pipelines.

[0070] In one embodiment, to ensure the sealing performance between the flare fitting 106 and the connecting body 101, the flare fitting 106 and the connecting body 101 can be integrally processed and manufactured.

[0071] Embodiment Eight

[0072] On the basis of Embodiment One, an anesthesia machine connector 107 is provided at the air outlet end 1012, and a sealing structure is provided on the anesthesia machine connector 107.

[0073] The anesthetic machine connector 107 is used to connect to an anesthetic machine. A sealing structure is provided on the anesthetic machine connector 107 to effectively ensure the tightness of the connection between the anesthetic machine connector 107 and the anesthetic machine and avoid air leakage. The sealing structure can specifically be an O-ring, sealant or other structures for achieving sealing, ensuring the airtightness between the connection main body 101 and the valve main body 102 and avoiding air leakage at the connection position between the connection main body 101 and the valve main body 102.

[0074] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator, characterized in that: include: A connecting body, wherein the connecting body is provided with an air outlet for connecting to an anesthesia machine and an air inlet for connecting to an oxygen concentrator, and an inner cavity of the connecting body is in communication with the air inlet and the air outlet; A valve body connected to the connecting body, wherein the valve body is provided with a through cavity, wherein the through cavity includes a sealing area and an active area, wherein the connecting surfaces of the sealing area and the active area form a boss facing the active area, and the active area is in communication with the inner cavity of the connecting body; A valve core, the valve core comprising a sealing plug and a core shaft extending from one end of the sealing plug, the sealing plug being adapted to the sealing area, and the core shaft extending into the active area; A spring, wherein the spring is sleeved on the core shaft; A spring seat is arranged on the core shaft, one end of the spring abuts against the spring seat, and the other end abuts against the boss.

2. The pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator according to claim 1, characterized in that: The sealing area is a flared opening, and the large end of the flared opening faces the outside.

3. The pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator according to claim 1, characterized in that: The core shaft is threadedly connected to the spring seat.

4. The pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator according to claim 1, characterized in that: The connection body and the valve body are threadedly connected.

5. The pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator according to claim 1, characterized in that: A sealing structure is provided between the connecting body and the valve body.

6. The pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator according to claim 1, characterized in that: A sealing structure is arranged between the sealing plug and the sealing area.

7. The pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator according to claim 1, characterized in that: The air inlet end is provided with a pagoda joint.

8. The pressure relief device for connecting the pipelines of anesthesia machine and oxygen concentrator according to claim 1, characterized in that: The gas outlet end is provided with an anesthesia machine connector, and the anesthesia machine connector is provided with a sealing structure.

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