Closed oxygen supply ventilation device and gas supply system
By designing an adjustable nasal plug and a sealing component for the air supply line, the problem of poor sealing in existing nasopharyngeal ventilation and oxygen supply devices has been solved, achieving well-sealed oxygen supply and ventilation, avoiding anesthetic leakage and environmental pollution, and improving surgical quality and patient safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN UNIV
- Filing Date
- 2024-01-10
- Publication Date
- 2026-06-26
AI Technical Summary
Existing nasopharyngeal ventilation and oxygen supply devices have poor sealing properties, leading to gas leakage of anesthetic drugs and secondary environmental pollution when connected to the anesthesia machine, which affects the safety of operators and patients.
A closed-loop oxygen supply and ventilation device was designed, including an air supply pipeline and a sealing component. The nasal plug and connector are adjustable in position. By adjusting the position of the nasal plug relative to the patient's nasal cavity, good airtight ventilation and oxygen supply can be achieved, avoiding leakage of anesthetic drugs.
This method achieves effective nasal cavity sealing during oxygen supply, preventing gas leakage and environmental pollution, and improving surgical quality and patient safety.
Smart Images
Figure CN224404121U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas supply technology, and more specifically, to a closed oxygen supply and ventilation device and a gas supply system. Background Technology
[0002] With the popularization of comfortable medical care, in dental hospitals or plastic surgery hospitals, intravenous anesthesia without intubation is often chosen for short surgeries of the oral cavity or head and face. Intravenous anesthesia without intubation can reduce the patient's tension and anxiety, and also allow surgeons to focus more on their surgical procedures.
[0003] Currently used mainstream intravenous anesthetics all have some degree of respiratory depression (e.g., propofol, sevoflurane, opioids, etc.). Anesthesiologists often use nasal cannulas to provide oxygen during surgery to increase the patient's oxygen reserves. When patients experience ventilation difficulties during surgery, or when secretions or blood flow into the pharynx, because the surgical area involves the oral cavity or head and face, anesthesiologists often cannot directly provide effective ventilation or suction without contaminating the surgical area. Surgeons often need to stop the procedure, and anesthesiologists perform chin support, mask ventilation, and oral and nasal suction to accommodate the patient's symptoms. After these procedures, surgeons need to re-disinfect the surgical area. These frequent procedures can easily lead to infection of the surgical area, affect the progress of the surgery, and increase conflicts between medical staff. Furthermore, for patients with significant posterior displacement of the tongue, intravenous anesthesia without intubation is often not possible, and general anesthesia with endotracheal intubation is required.
[0004] Some hospitals have considered using new nasopharyngeal ventilation and suction devices. While these devices can solve the problem of pharyngeal suction, provide better anesthesia control, and even connect to ventilators for gas and carbon dioxide concentration monitoring, some problems remain unresolved.
[0005] The inventors discovered through research that existing nasopharyngeal ventilation oxygen supply devices have at least the following drawbacks:
[0006] While it can meet daily clinical needs, its poor airtightness prevents effective positive pressure ventilation. This can lead to gas leaks and secondary environmental pollution when connected to an anesthesia machine for inhalation anesthesia, increasing the risk of accidental inhalation of anesthetic drugs by the operator, thus affecting both the operator's work quality and patient safety. Utility Model Content
[0007] The purpose of this invention is to provide a closed oxygen supply and ventilation device and system that can continuously and effectively ensure the airtightness of the patient's nasal cavity during ventilation and oxygen supply, prevent air leakage at the nasal cavity, provide positive pressure ventilation, and use inhaled anesthetic drugs that are less likely to leak or cause pollution to the operating room environment.
[0008] The embodiments of this utility model are implemented as follows:
[0009] In a first aspect, this utility model provides a closed oxygen supply and ventilation device, comprising:
[0010] An air supply line and a sealing assembly, the air supply line being designed to work with a patient and provide oxygen to the patient via the patient's nasal cavity; the sealing assembly including a nasal plug and a connector, the connector being connected to both the nasal plug and the air supply line, the nasal plug being used to seal the patient's nasal cavity from which the air supply line is not inserted.
[0011] In an optional embodiment, the connector is lockably slidably engaged with the gas supply line to adjust the position of the connector relative to the gas supply line.
[0012] Based on the above solution, by adjusting the position of the connector, the position of the nasal plug relative to the patient's nasal cavity can be adjusted, thus adapting to the use of patients in different positions, making it flexible and widely applicable.
[0013] In an optional implementation, the connector is configured as a flexible component.
[0014] Based on the above solution, the connector can be bent adaptively, which makes it easy to adjust the position of the nasal plug relative to the patient's nasal cavity. It is convenient and flexible to operate and has a strong ability to adapt to the environment.
[0015] In an optional embodiment, the nasal plug is configured as an inflatable bladder.
[0016] Based on the above scheme, when a patient's nasal cavity needs to be sealed, the nasal plug is not inflated and can contract, making it small and easy to place inside the patient's nasal cavity. Then, the nasal plug is inflated, increasing the internal air pressure and causing it to expand. The surface of the nasal plug can then adhere to the inside of the patient's nasal cavity, thus achieving a sealing effect. This allows for adaptation to different patients' nasal cavity sizes, offering flexibility in use. The nasal plug can be enlarged from small to large without interfering with the patient's nasal cavity, resulting in greater patient comfort. After use, the nasal plug is deflated and detached from the nasal cavity for easy removal, minimizing residue and ensuring hygiene and safety.
[0017] In an optional embodiment, the nasal plug is provided with an inflation / deflation piston, which is used to adjust the pressure of the nasal plug so as to block the patient's nasal cavity or to separate the nasal plug from the patient's nasal cavity.
[0018] Based on the above scheme, the inflatable bladder is inflated or deflated using an inflation / deflation piston, which is convenient to operate.
[0019] In an optional implementation, the nasal plug is configured as a flexible plug.
[0020] Based on the above solutions, the structure of nasal plugs is diversified and can be selected as needed. The flexible plug structure design can reduce its volume when it is inserted into the nasal cavity. When it is inserted into the set position, the force of the recovery deformation makes the nasal plug fit tightly into the nasal cavity, thus achieving nasal cavity sealing.
[0021] In an optional embodiment, the gas supply line includes a main ventilation conduit, a negative pressure suction conduit, a switch, a breathing circuit, an anesthesia machine inlet pipe, and an anesthesia machine outlet pipe. The negative pressure suction conduit is connected to the main ventilation conduit, and the switch is installed at the end of the negative pressure suction conduit. One end of the breathing circuit is connected to the main ventilation conduit, and the other end of the breathing circuit is connected to both the anesthesia machine inlet pipe and the anesthesia machine outlet pipe.
[0022] Based on the above scheme, the gas supply pipeline has a simple structure and is easy to use.
[0023] In an optional embodiment, the air supply line further includes a breathing circuit connector, which is connected to the main ventilation duct. The breathing circuit has a breathing circuit connection tube, which is detachably connected to the breathing circuit connector.
[0024] Based on the above solution, the gas supply pipeline can be disassembled into two parts for storage, making it small in size and easy to store and transport.
[0025] Secondly, this utility model provides a gas supply system, which further includes:
[0026] The closed oxygen supply and ventilation device described in any of the foregoing embodiments.
[0027] The beneficial effects of this utility model embodiment are:
[0028] In summary, the closed-loop oxygen supply and ventilation device provided in this embodiment involves inserting a nasal ventilation and oxygen supply device with the main ventilation tube of the air supply line into one nostril during clinical operation. The position of the connector relative to the air supply line is adjusted according to the patient's physiological structure, allowing for easy insertion of the nasal plug into the corresponding nasal cavity. Once inserted, the nasal plug creates a sealed contact with the nasal cavity, blocking the nasal cavity without the air supply line. Thus, during oxygen supply, the nasal plug continuously seals the nasal cavity without the main ventilation tube, ensuring a well-sealed ventilation and oxygen delivery system. During operation, when connected to an anesthesia machine for inhalation anesthesia, gas leakage and secondary pollution are unlikely, reducing the risk of accidental inhalation of anesthetic drugs by the operator, thus minimizing impact on operator performance and patient safety. Attached Figure Description
[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0030] Figure 1 This is a schematic diagram of the structure of the closed oxygen supply and ventilation device according to an embodiment of the present invention.
[0031] icon:
[0032] 100 - Gas supply line; 110 - Main ventilation tube; 120 - Negative pressure suction tube; 130 - Switch; 140 - Breathing circuit; 150 - Anesthesia machine inlet tube; 160 - Anesthesia machine outlet tube; 170 - Breathing circuit connector; 180 - Breathing circuit connecting tube; 200 - Sealing assembly; 210 - Connector; 220 - Nasal plug; 221 - Inflatable bag; 222 - Inflation / depression piston; 230 - Slip ring. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0035] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0037] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0039] In the existing technology, when the existing gas supply device is connected to the anesthesia machine for inhalation anesthesia, a catheter is generally used to connect to one of the patient's two nasal cavities, while the other nasal cavity is left open. During the gas supply process, the anesthetic is prone to leak from the nasal cavity that has not been inserted by the catheter, causing secondary environmental pollution. It is also easy for the operator to accidentally inhale the anesthetic, affecting the operator's work quality and the patient's safety.
[0040] In view of this, the designers have provided a closed-loop oxygen supply and ventilation device that can enhance airtightness, provide positive pressure ventilation, and use inhaled anesthetics, which is less likely to leak and cause pollution to the operating room environment, thus avoiding environmental pollution and ensuring high surgical quality.
[0041] Please combine Figure 1 In this embodiment, the closed-loop oxygen supply ventilation device includes an air supply line 100 and a sealing assembly 200. The air supply line 100 is used to cooperate with the patient and can provide oxygen to the patient through the patient's nasal cavity. The sealing assembly 200 includes a nasal plug 220 and a connector 210. The connector 210 is connected to both the nasal plug 220 and the air supply line 100. The nasal plug 220 is used to close the patient's nasal cavity where the air supply line 100 is not inserted.
[0042] Based on the above, the working principle of the closed oxygen supply and ventilation device provided in this embodiment is as follows:
[0043] In clinical practice, a nasal ventilation and oxygen supply device, primarily consisting of the main ventilation tube 110 of the air supply line 100, is inserted into one nostril of the patient. The position of the connector 210 relative to the air supply line 100 is adjusted according to the patient's physiological structure. This allows for adjustment of the relative position of the nasal plug 220 to the patient's nasal cavity, facilitating its insertion. Once inserted, the nasal plug 220 forms a sealed contact with the nasal cavity, blocking the nasal cavity without the air supply line 100. Thus, during oxygen supply, the nasal plug 220 continuously seals the nasal cavity without the main ventilation tube 110, ensuring a well-sealed ventilation and oxygen delivery system. During operation, when connected to an anesthesia machine for inhalation anesthesia, gas leakage and secondary pollution are unlikely, reducing the risk of accidental inhalation of anesthetic drugs by the operator, thus minimizing impact on operator performance and patient safety.
[0044] The following embodiments illustrate the details of the closed oxygen supply and ventilation device provided in this application by way of example.
[0045] In this embodiment, optionally, the connector 210 and the air supply line 100 are lockably slidably engaged to adjust the position of the connector 210 relative to the air supply line 100.
[0046] This design allows for adjustment of the position of the nasal plug 220 relative to the patient's nasal cavity by adjusting the position of the connector 210, thus adapting to the use of patients in different positions, making it flexible and versatile.
[0047] It should be understood that a slip ring 230 can be provided at the end of the connector 210. The slip ring 230 is a damping collar. The slip ring 230 is sleeved on the outside of the main ventilation duct 110 and the two have a certain frictional force to ensure that the connector 210 does not easily slide freely relative to the main ventilation duct 110. However, when the external force is large enough, the slip ring 230 can slide relative to the main ventilation duct 110 to achieve position adjustment.
[0048] In this embodiment, optionally, the connector 210 is a flexible component. For example, the connector 210 is a plastic tube or plastic rope. The connector 210 can be bent adaptably, thereby facilitating the adjustment of the position of the nasal plug 220 relative to the patient's nasal cavity, making operation convenient and flexible, and highly adaptable to the environment. Moreover, the connector 210 is not easily damaged by pulling and has a long service life.
[0049] In this embodiment, optionally, the nasal plug 220 is configured as an inflatable sac 221. When a nasal cavity needs to be sealed, the nasal plug 220 is not inflated; it can contract, making it small and easy to place into the patient's nasal cavity. Then, the nasal plug 220 is inflated, increasing the internal air pressure and causing it to expand. The surface of the nasal plug 220 can then adhere to the inside of the patient's nasal cavity, thus achieving a sealing effect. This allows it to adapt to different patients' nasal cavity needs, offering flexibility in use. Furthermore, the nasal plug 220 can be expanded from small to large without interfering with the patient's nasal cavity, resulting in greater patient comfort. After use, the nasal plug 220 deflates, separating from the nasal cavity for easy removal, and minimal residue remains in the nasal cavity, ensuring hygiene and safety.
[0050] Furthermore, the nasal plug 220 is equipped with an inflation / deflation piston 222, which is used to adjust the pressure of the nasal plug 220 so as to block the patient's nasal cavity or to separate the nasal plug 220 from the patient's nasal cavity. The inflation / deflation piston 222 is used to inflate or deflate the inflatable bag 221, which is convenient to operate.
[0051] Alternatively, in other embodiments, an inflation port and a deflation port can be provided on the inflatable bladder 221. The valve at the deflation port is normally closed, while the inflation port is equipped with a one-way valve that only allows gas to enter the inflatable bladder 221 from the outside. When inflation is needed, the inflation device is aligned with the inflation port for inflation. After inflation, the inflation device is removed. Due to the action of the one-way valve, the gas inside the inflatable bladder 221 is not easily escaped, ensuring a durable and effective seal between the inflatable bladder 221 and the nasal cavity. When deflation is needed, the valve at the deflation port is opened.
[0052] In other embodiments, the nasal plug 220 may optionally be a flexible plug. The structure of the nasal plug 220 is diverse and can be selected as needed. The flexible plug's structural design allows it to be compressed and reduce its volume when inserted into the nasal cavity. After being inserted into the set position, the force of its recovery deformation makes the nasal plug 220 fit tightly against the nasal cavity, achieving a nasal cavity seal.
[0053] In this embodiment, optionally, the gas supply line 100 includes a main ventilation conduit 110, a negative pressure suction conduit 120, a switch 130, a breathing circuit 140, an anesthesia machine inlet pipe 150, and an anesthesia machine outlet pipe 160. The negative pressure suction conduit 120 is connected to the main ventilation conduit 110, and the switch 130 is installed at the end of the negative pressure suction conduit 120. One end of the breathing circuit 140 is connected to the main ventilation conduit 110, and the other end of the breathing circuit 140 is connected to both the anesthesia machine inlet pipe 150 and the anesthesia machine outlet pipe 160. The gas supply line 100 has a simple structure and is easy to use. Furthermore, the connector 210 is slidably fitted with the main ventilation conduit 110.
[0054] Furthermore, the air supply line 100 also includes a breathing circuit connector 170, which is connected to the main ventilation tube 110. The breathing circuit 140 has a breathing circuit connecting pipe 180, which is detachably connected to the breathing circuit connector 170. When stored, the air supply line 100 can be disassembled into two parts, making it compact and easy to store and transport.
[0055] It should be understood that the gas supply pipeline 100 can refer to existing known technologies. In order to avoid repetition and redundancy, it will not be described in detail in this embodiment.
[0056] The closed oxygen supply and ventilation device provided in this embodiment has good airtightness, can provide positive pressure ventilation, and is less likely to leak or cause pollution of the operating room environment when using inhaled anesthetic drugs.
[0057] This embodiment also provides a gas supply system, which includes the sealed oxygen supply and ventilation device provided in the above embodiment, and has the advantages of good sealing performance and low leakage during gas supply.
[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A closed oxygen supply and ventilation device, characterized in that, include: An air supply line (100) and a sealing assembly (200) are provided, the air supply line (100) being designed to work with a patient and to provide oxygen to the patient through the patient's nasal cavity; the sealing assembly (200) includes a nasal plug (220) and a connector (210) connected to both the nasal plug (220) and the air supply line (100), the nasal plug (220) being used to seal the patient's nasal cavity from which the air supply line (100) is not inserted.
2. The closed oxygen supply and ventilation device according to claim 1, characterized in that: The connector (210) is lockably slidably engaged with the gas supply line (100) to adjust the position of the connector (210) relative to the gas supply line (100).
3. The closed oxygen supply and ventilation device according to claim 1, characterized in that: The connector (210) is configured as a flexible component.
4. The closed oxygen supply and ventilation device according to claim 1, characterized in that: The nasal plug (220) is configured as an inflatable bladder (221).
5. The closed oxygen supply and ventilation device according to claim 4, characterized in that: The nasal plug (220) is provided with an inflation / deflation piston (222), which is used to adjust the pressure of the nasal plug (220) so that the nasal plug (220) blocks the patient's nasal cavity or separates the nasal plug (220) from the patient's nasal cavity.
6. The closed oxygen supply and ventilation device according to claim 1, characterized in that: The nasal plug (220) is configured as a flexible plug.
7. The closed oxygen supply and ventilation device according to any one of claims 1-6, characterized in that: The gas supply line (100) includes a main ventilation tube (110), a negative pressure suction tube (120), a switch (130), a breathing circuit (140), an anesthesia machine inlet tube (150), and an anesthesia machine outlet tube (160). The negative pressure suction tube (120) is connected to the main ventilation tube (110), and the switch (130) is installed at the end of the negative pressure suction tube (120). One end of the breathing circuit (140) is connected to the main ventilation tube (110), and the other end of the breathing circuit (140) is connected to both the anesthesia machine inlet tube (150) and the anesthesia machine outlet tube (160).
8. The closed oxygen supply and ventilation device according to claim 7, characterized in that: The air supply line (100) also includes a breathing circuit connector (170), which is connected to the main ventilation duct (110). The breathing circuit (140) has a breathing circuit connecting pipe (180), which is detachably connected to the breathing circuit connector (170).
9. A gas supply system, characterized in that, The gas supply system also includes: The closed oxygen supply and ventilation device according to any one of claims 1-8.