Anti-air-leakage artificial nose

Abstract

The utility model discloses an air leakage prevention artificial nose, which belongs to the technical field of medical instruments and comprises a shell, a machine end interface is arranged at the top of the shell, a patient end interface is arranged at the bottom of the shell, and a filter membrane is arranged in the shell; the top of the shell is further provided with a gas monitoring connector, a one-way valve is arranged in the gas monitoring connector, and a valve clack of the one-way valve faces the interior of the gas monitoring connector. The one-way valve is arranged in the gas detection interface, and the valve clack of the one-way valve is opposite to the opening direction of the gas detection interface, so that the one-way valve can be opened only when an external gas pipe is inserted, and the gas tightness of the gas detection interface is ensured; meanwhile, compared with conventional connector cover sealing, the one-way valve can automatically adjust the airtight state from the gas passing state at any time, the situation that the gas detection connector is still in the open state when the sealing cover is screwed down is avoided, normal operation of the artificial nose is not affected, and the use safety of the artificial nose is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an artificial nose which prevents air leakage. Background Art

[0002] Artificial noses, also known as biological filters, heat and moisture exchange filters, respiratory filters, etc., are filters used by patients in breathing circuits. They have different degrees of biological filtration and heating and moisturizing effects and are widely used in medicine. Artificial noses usually include an outer shell, a fiber core inside the outer shell, one end of the outer shell is provided with a first connection port for connecting to a mask, and the other end of the outer shell is provided with a second connection port for connecting to a ventilator or anesthesia machine; the fiber core can collect and retain the heat and water in the exhaled gas on the one hand, and has a filtering function on the other hand, thereby achieving the filtering and heating and moisturizing effects of the artificial nose.

[0003] In order to further monitor the patient's breathing, the existing artificial nose is usually also provided with a carbon dioxide detection head for sampling and detecting the gas. For example, Chinese utility model patent CN204972577U discloses a heat and moisture exchanger, including an upper shell, a lower shell and a filter membrane, the upper shell and the lower shell are connected into one body by a snap and form a chamber, the filter membrane is arranged in the chamber formed by the upper shell and the lower shell, and an air inlet and a carbon dioxide detection head are arranged on the outer wall of the upper shell, and the carbon dioxide detection head is on one side of the air inlet and close to the edge of the upper shell, and the air inlet and the carbon dioxide detection head are both connected to the inside of the upper shell. The heat and moisture exchanger samples the gas by setting a detection head, thereby monitoring the patient's breathing. Since the artificial nose is a human respiratory aid, it is necessary to ensure the air tightness of the channel during use to prevent air leakage from threatening the patient's life safety. The above-mentioned artificial nose does not seal the detection head. When sampling is not needed, when the cover on the detection head is not tightened or accidentally falls off, gas is likely to leak from the interface. During the sampling process, the sampling tube is directly connected to the carbon dioxide detection head. The sampling tube may fall off during use, resulting in gas leakage from the detection head during the sampling process, threatening the patient's life safety. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the utility model provides an anti-leakage artificial nose, which can effectively avoid air leakage and has good safety.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anti-leakage artificial nose comprises a shell, wherein a machine end interface is arranged on the top of the shell, a patient end interface is arranged on the bottom of the shell, and a filter membrane is arranged inside; a gas monitoring interface is also arranged on the top of the shell, a one-way valve is arranged inside the gas monitoring interface, the valve flap of the one-way valve faces the inside of the gas monitoring interface, and a gas sampling tube is inserted into the one-way valve to communicate with the inside of the shell.

[0007] By arranging a one-way valve in the gas monitoring interface, the one-way valve flap is arranged in the opposite direction of the opening direction of the gas monitoring interface. When a sampling tube is needed, the gas sampling tube is inserted into the one-way valve to push the valve flap to open, and the gas enters the gas sampling tube to achieve the ventilation state of the gas; when sampling is not needed or the sampling tube falls off, the one-way valve is in a closed state because there is no thrust of the gas sampling tube, and the gas is sealed. This avoids the problem of the gas monitoring interface being still in an open state due to the sealing cover on the gas monitoring interface not being tightened or accidentally falling off, or the gas sampling tube falling off during sampling, so that the artificial nose can operate normally and the safety is further improved.

[0008] Preferably, the one-way valve is fixedly arranged inside the gas monitoring interface.

[0009] Preferably, the one-way valve is a duckbill one-way valve, and the duckbill end of the duckbill one-way valve faces the interior of the gas monitoring interface.

[0010] By setting the one-way valve as a duckbill one-way valve with the duckbill end of the duckbill one-way valve facing the inside of the gas monitoring interface, it is ensured that when the gas monitoring interface is open, the airflow cannot leak through the one-way valve, thereby ensuring the closedness of the artificial nose.

[0011] Preferably, the gas monitoring interface is provided with a sealing cover.

[0012] Preferably, a fixing ring is connected to the sealing cover, the fixing ring is sleeved on the outer periphery of the gas monitoring interface, and the sealing cover is fixedly connected to the gas monitoring interface via the fixing ring.

[0013] Preferably, the filter membrane comprises a water filter membrane and a bacteria filter membrane which are stacked, wherein the bacteria filter membrane is fixed in close proximity to the machine end interface in the filter cavity, and the water filter membrane is fixed in close proximity to the patient end interface in the filter cavity.

[0014] Preferably, the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are detachably connected.

[0015] Preferably, the filter membrane is detachably disposed in a filter cavity formed by the upper shell and the lower shell.

[0016] The beneficial effects produced by adopting the technical solution of the utility model are as follows:

[0017] (1) The utility model provides a leak-proof artificial nose, which provides a one-way valve in the gas monitoring interface, wherein the valve flap of the one-way valve is arranged in the opposite direction to the opening direction of the gas monitoring interface. When a sampling tube is needed, the gas sampling tube is inserted into the one-way valve to push the valve flap to open, and the gas enters the gas sampling tube to achieve a ventilation state of the gas; when sampling is not needed or the sampling tube falls off, the one-way valve is in a closed state because there is no thrust of the gas sampling tube, thereby achieving a sealed state of the gas, thereby avoiding the problem that the gas monitoring interface is still in an open state due to the sealing cover on the gas monitoring interface not being tightened or accidentally falling off, or the gas sampling tube falling off during sampling, so that the artificial nose can operate normally and the safety is further improved.

[0018] (2) The artificial nose of the utility model fixes the one-way valve inside the gas monitoring interface so that the one-way valve will not fall off due to internal pressure, ensuring that the airflow cannot leak through the one-way valve, thereby further improving the airtightness of the artificial nose and further improving the safety of the artificial nose.

[0019] (3) The artificial nose of the utility model allows medical staff to more conveniently sample the patient's exhaled gas by inserting the gas sampling tube into the one-way valve so as to connect it with the inside of the shell. When the patient's gas is collected, the one-way valve quickly and automatically becomes closed to ensure the airtightness of the gas monitoring interface.

[0020] (4) The artificial nose of the utility model is simple in design, easy to use, low in manufacturing cost, and easy to obtain materials. It can not only ensure the original function remains unchanged, but also ensure the sealing of the artificial nose and protect the patient's life safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 It is a top view of the one-way valve of the utility model in a closed state;

[0024] In the figure: 1. shell, 2. machine end interface, 3. patient end interface, 4. gas monitoring interface, 5. bacteria filter membrane, 6. water filter membrane, 7. fixing ring, 8. sealing cover, 9. one-way valve, 10. filter chamber, 11. upper shell, 12. lower shell. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] In this embodiment, a one-way valve is installed inside the gas monitoring interface, and the valve flap of the one-way valve faces the inside of the gas monitoring interface, so that when the gas monitoring interface is open, the airflow cannot leak out through the one-way valve, thereby ensuring the sealing of the artificial nose and protecting the patient's life safety. At the same time, the artificial nose has a simple structure, good filtering effect, easy use, and easy to mass produce. The specific implementation is as follows:

[0027] like Figures 1 to 2 As shown, an anti-leakage artificial nose comprises a shell 1, a machine end interface 2 is arranged on the top of the shell 1, a patient end interface 3 is arranged on the bottom, and a filter membrane is arranged inside; a gas monitoring interface 4 is also arranged on the top of the shell, and a one-way valve 9 is arranged inside the gas monitoring interface, and the valve flap of the one-way valve faces the inside of the gas monitoring interface. By arranging the one-way valve 9 in the gas monitoring interface 4, the valve flap of the one-way valve is arranged in the opposite direction of the opening direction of the gas monitoring interface 4, when a sampling tube is needed, the gas sampling tube is inserted into the one-way valve 9 to push the valve flap to open, and the gas enters the gas sampling tube to achieve the ventilation state of the gas; when sampling is not needed or the sampling tube falls off, since the one-way valve 9 does not have the thrust of the gas sampling tube, the one-way valve 9 is in a closed state, and the gas sealing state is achieved, avoiding the problem that the gas monitoring interface 4 is still in an open state due to the sealing cover on the gas monitoring interface 4 not being tightened or accidentally falling off, or the gas sampling tube falling off during sampling, so that the artificial nose can operate normally and the safety is further improved.

[0028] In some optional embodiments, the one-way valve 9 is fixedly arranged inside the gas monitoring interface 4. More specifically, the gas monitoring interface 4 and the one-way valve 9 are integrally injection molded, and the one-way valve 9 is integrally injection molded inside the gas monitoring interface 4, so that the one-way valve 9 will not fall off due to the internal pressure of the artificial nose, ensuring that the airflow cannot leak through the one-way valve 9, thereby ensuring the airtightness of the artificial nose.

[0029] In some optional embodiments, the one-way valve 9 is a duckbill one-way valve, and the duckbill end of the duckbill one-way valve faces the inside of the gas monitoring interface 4. By setting the duckbill one-way valve, the sampling tube is inserted into the one-way valve 9 so that the duckbill-shaped valve flap opens, so that the sampling tube passes through the duckbill end of the one-way valve and communicates with the inside of the shell, thereby collecting the gas in the shell.

[0030] In some optional embodiments, the gas sampling tube is inserted into the one-way valve 9 to communicate with the interior of the housing 1. By inserting the gas sampling tube into the one-way valve 9, it can be connected with the interior of the housing 1, allowing medical staff to more conveniently sample the patient's exhaled gas. When the patient's gas is collected, the one-way valve 9 quickly and automatically becomes a closed state to ensure the airtightness of the gas monitoring interface 4.

[0031] In some optional embodiments, the gas monitoring interface 4 is equipped with a sealing cover 8. By providing the sealing cover 8 on the gas monitoring interface 4, the gas monitoring interface 4 has a dual protection function. On the one hand, the sealing performance of the gas monitoring interface 4 can be further improved to further ensure the life safety of the patient; on the other hand, the sealing cover 8 also has a protective function to prevent dust from entering the gas monitoring interface and improve the hygiene of the artificial nose.

[0032] In some optional embodiments, a fixing ring 7 is connected to the sealing cover 8, and the fixing ring sleeve 7 is connected to the outer periphery of the gas monitoring interface 4, and the sealing cover 8 is fixedly connected to the gas monitoring interface 4 through the fixing ring 7. Since the sealing cover 8 is small in size and easy to lose, by setting the fixing ring 7, the sealing cover 8 can be fixedly connected to the gas monitoring interface 4, which is more convenient and timely to use; further, the sealing cover 8 is securely connected to the outer edge of the gas monitoring interface 4 through the fixing ring 7, wherein the fixing ring 7 is tightly sleeved around the gas monitoring interface 4, so that the sealing cover 8 and the gas monitoring interface 4 are firmly combined, and even when the sealing cover 8 falls off accidentally or is unscrewed during use, the sealing cover 8 will not be lost, and the sealing cover 8 can be connected to the monitoring interface 4 faster and more conveniently, ensuring the airtightness of the artificial nose.

[0033] In some optional embodiments, the filter membrane includes a stacked bacteria filter membrane 5 and a water filter membrane 6. The bacteria filter membrane is fixed in the filter cavity close to the machine end interface, which can intercept and capture bacteria and viruses in the air, reduce the risk of pathogens invading the lungs, and reduce the incidence of hospital-acquired infections; the water filter membrane is fixed in the filter cavity close to the patient end interface, which can capture and retain moisture in the air, humidify the gas before entering the lungs, maintain the moist state of the respiratory tract, and reduce irritation and damage caused by dryness.

[0034] In some optional embodiments, the housing includes an upper housing 11 and a lower housing 12, and the upper housing 11 and the lower housing 12 are detachably connected; the filter membrane is detachably arranged in a filter cavity 10 formed by the upper housing 11 and the lower housing 12. By arranging the upper housing 11 and the lower housing 12, the upper housing 11 and the lower housing 12 can be conveniently disassembled and assembled. When the filter membrane needs to be replaced, the filter membrane can be arranged in the filter cavity formed by the upper housing 11 and the lower housing 12 by disassembling the upper housing 11 from the lower housing 12, which facilitates production and assembly, reduces costs, and saves resources.

[0035] The working principle of the utility model is as follows: the medical staff connects the machine end interface to the ventilator, and connects the patient end interface to the endotracheal tube to perform assisted breathing. When the internal pressure of the device is too high or too low, the sealing cover is opened, and the sterilized trachea is inserted into the one-way valve, and the valve flap of the one-way valve is opened to allow the interior to communicate with the atmosphere to adjust the air pressure; after the adjustment is completed, the trachea is pulled out, the valve flap of the one-way valve is closed, and the sealing cover is tightened. When there is too much internal heat, the sealing cover is opened, and the sterilized trachea is inserted into the one-way valve, and the valve flap of the one-way valve is opened to allow the internal heat to dissipate to the outside of the device, and then the trachea is pulled out, the valve flap of the one-way valve is closed, and the sealing cover is tightened.

[0036] When it is necessary to monitor the patient's exhaled gas, open the sealing cover, insert the front end of the gas sampling tube into the one-way valve, open the valve disc of the one-way valve, and connect the gas sampling tube to the inside of the shell; then screw the gas sampling tube to the gas monitoring interface to perform sampling and detection; after the monitoring is completed, pull out the gas sampling tube, the valve disc of the one-way valve automatically closes, and then tighten the sealing cover. When the gas sampling tube accidentally falls off from the gas monitoring interface during the monitoring process, the gas sampling tube will be separated from the one-way valve, and the valve disc of the one-way valve will automatically close and return to the closed state, thereby sealing the gas monitoring interface to prevent the gas in the device from leaking from the interface, ensuring the safety of the patient's use process.

[0037] When the sealing cover is not tightened or accidentally falls off, the one-way valve disc is in a closed state, and the gas in the device cannot leak out from the gas monitoring interface, ensuring the airtightness of the artificial nose and the safety of the patient during use.

[0038] The utility model has the following advantages:

[0039] The utility model provides an anti-leakage artificial nose, which has the advantages of simple design, convenient use, low manufacturing cost and convenient material acquisition, and can not only ensure the original function unchanged, but also ensure the sealing property of the artificial nose, thereby protecting the life safety of the patient.

[0040] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An anti-leakage artificial nose, characterized in that: It includes a shell, a machine end interface is arranged on the top of the shell, a patient end interface is arranged on the bottom of the shell, and a filter membrane is arranged inside; a gas monitoring interface is also arranged on the top of the shell, a one-way valve is arranged inside the gas monitoring interface, the valve flap of the one-way valve faces the inside of the gas monitoring interface, and a gas sampling tube is inserted into the one-way valve to communicate with the inside of the shell.

2. The air leakage-proof artificial nose according to claim 1, characterized in that: The one-way valve is fixedly arranged inside the gas monitoring interface.

3. The leak-proof artificial nose according to claim 1, characterized in that: The one-way valve is a duckbill one-way valve, and the duckbill end of the duckbill one-way valve faces the inside of the gas monitoring interface.

4. The leak-proof artificial nose according to claim 1, characterized in that: The gas monitoring interface is equipped with a sealing cover.

5. The leak-proof artificial nose according to claim 4, characterized in that: The sealing cover is connected with a fixing ring, the fixing ring is sleeved on the outer periphery of the gas monitoring interface, and the sealing cover is fixedly connected to the gas monitoring interface through the fixing ring.

6. The leak-proof artificial nose according to claim 1, characterized in that: The filter membrane comprises a water filter membrane and a bacteria filter membrane which are stacked.

7. The leak-proof artificial nose according to claim 1, characterized in that: The housing comprises an upper housing and a lower housing, and the upper housing and the lower housing are detachably connected.

8. The leak-proof artificial nose according to claim 7, characterized in that: The filter membrane is detachably disposed in a filter cavity formed by the upper shell and the lower shell.

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