Nasopharyngeal airway

Abstract

This invention provides a nasopharyngeal airway, relating to the field of nasopharyngeal airway technology. The nasopharyngeal airway includes a nasopharyngeal airway body, a rubber bulb, a spherical cover, a first micropore, an arc-shaped baffle, a second micropore, a shape memory alloy plate, and pure cotton gauze. The rubber bulb is located outside the nasopharyngeal airway body, the spherical cover is located outside the rubber bulb, and the pure cotton gauze is located outside the spherical cover. The first micropore is located inside the side wall of the spherical cover, the arc-shaped baffle is located inside the inner wall of the spherical cover, and the second micropore is located inside the arc-shaped baffle. The shape memory alloy plate connects to the arc-shaped baffle. Medication is stored between the rubber bulb and the spherical cover. The rubber bulb expands or contracts to release medication or absorb medication. The shape memory alloy plate straightens or bends, causing the first and second micropores to connect or be offset. In this invention, inflammation inside the patient's nasal cavity causes localized heat and swelling, causing the rubber bulb to expand and release medication while simultaneously squeezing the pure cotton gauze to evenly coat the medication. The shape memory alloy plate deforms to facilitate the release or replenishment of medication.

Description

Technical Field

[0001] This invention relates to the field of nasopharyngeal airway technology, and more specifically, to a nasopharyngeal airway. Background Technology

[0002] A nasopharyngeal airway is an artificial airway inserted into the pharynx through the nostrils. Its main functions are to relieve tongue posterior displacement, maintain upper airway patency, perform nasotracheal intubation, awake endotracheal intubation, manage breathing in obese patients and patients with difficult airways, and use during anesthesia induction and recovery.

[0003] The existing nasal mucosal capillaries are relatively fragile. During insertion, the cone-shaped tip may cause bleeding inside the patient's nasal cavity, resulting in inflammation, local fever, and swelling. It is necessary to continuously inject anti-inflammatory medication separately according to the recovery situation, which is inconvenient to operate. Summary of the Invention

[0004] To address the above problems, the present invention provides a nasopharyngeal airway.

[0005] This invention provides a nasopharyngeal airway, comprising a nasopharyngeal airway body, a rubber ball, a spherical cover, a first micropore, an arc-shaped baffle, a second micropore, a shape memory alloy plate, and pure cotton gauze. The rubber ball is fitted over the outside of the nasopharyngeal airway body, the spherical cover is fitted over the outside of the rubber ball, and the pure cotton gauze is fitted over the outside of the spherical cover. Multiple first micropores are evenly distributed within the sidewall of the spherical cover. Multiple arc-shaped baffles are evenly distributed circumferentially on the inner wall of the spherical cover. Multiple second micropores are evenly distributed within the arc-shaped baffles. Multiple shape memory alloy plates are evenly distributed and connected to their corresponding arc-shaped baffles. The space between the outside of the rubber ball and the inside of the spherical cover is a storage space for storing medication. When the rubber ball expands or contracts due to heat, it drives the storage space to discharge medication outward or absorb medication inward. When the shape memory alloy plate straightens or bends due to heat, it drives the arc-shaped baffle to rotate relative to the spherical cover in both directions, allowing the first and second micropores to connect or be stagger.

[0006] Optionally, a PP plastic tube is slidably sleeved on the outer side of the nasopharyngeal airway body, a positioning ring is coaxially fixed at the end of the PP plastic tube, the inner side of the middle of the rubber ball is coaxially fixed on the outer side of the PP plastic tube, and a plurality of memory alloy plates are evenly distributed circumferentially along the axis of the PP plastic tube and their ends are fixed on the outer side of the PP plastic tube.

[0007] Optionally, the inner side of the spherical cover is coaxially fixed to the outer side of the PP plastic tube, and a plurality of the first micropores are evenly distributed along the spherical surface of the spherical cover and are opened through the side wall. The storage space inside the spherical cover is connected to the outside through the first micropores, and the inner side of the pure cotton gauze is fixed to the outer side of the spherical cover.

[0008] Optionally, symmetrical arc-shaped L-plates are arranged on both sides of the arc-shaped baffle. The arc-shaped L-plates are fixed on the inner wall of the spherical cover. The outer side of the arc-shaped baffle and the inner side of the arc-shaped L-plate match each other in shape and are slidably connected. The arc-shaped baffle is slidably connected to the inner wall of the spherical cover. A plurality of second micro-holes are evenly opened inside the arc-shaped baffle along the trajectory of the arc-shaped baffle shape. The memory alloy plate is fixed on the inner side of the arc-shaped baffle at the end opposite to the PP plastic tube.

[0009] Optionally, a connecting pipe is fixedly connected to the outside of the spherical cover. The connecting pipe passes through the inside of the positioning ring and is fixedly connected to a flexible tube at its outer end. A sleeve is coaxially fixed to the outer side of the flexible tube away from the connecting pipe. A drug storage tube is detachably installed on the outside of the sleeve. An elastic mechanism is provided inside the sleeve, and a driving component is provided inside the drug storage tube. When the sleeve and the drug storage tube are installed together, the elastic mechanism is triggered by the driving component to connect the driving sleeve and the drug storage tube. When the sleeve and the drug storage tube are disassembled, the elastic mechanism is triggered by the driving component to seal the inside of the sleeve.

[0010] Optionally, the outer side of the sleeve away from the hose is threaded to the inner side of the drug inlet of the drug storage tube. An annular plate is coaxially fixed on the outer side of the sleeve, and a sealing gasket is attached to the bottom end of the annular plate. The sealing gasket is sleeved on the outer side of the sleeve. A piston is slidably arranged on the inner wall of the drug storage tube, and a limiting ring is coaxially fixed on the inner side of the drug storage tube away from the drug inlet.

[0011] Optionally, the elastic mechanism includes a tapered hole, a metal ball, and a spring. The tapered hole is opened inside the end of the sleeve, and a spring is fixedly mounted on the inner end face of the sleeve. A metal ball is fixedly mounted on the end of the spring away from the hose, and the spring is always in a compressed state.

[0012] Optionally, the driving component includes a push rod and a support rod. The two ends of the support rod are fixed to the inner wall of the drug storage tube near the drug inlet. The push rod is fixed to the middle of the end face of the support rod. A one-way valve is fixedly installed on the hose near the sleeve.

[0013] Optionally, the nasopharyngeal airway body includes an oxygen supply module, a carbon dioxide collection module, a suction module, a camera module, a camera washing module, an airbag module, a nebulizer module, and a local anesthesia tube module. Multiple evenly distributed ventilation tubes are fixedly arranged circumferentially inside the nasopharyngeal airway body, and an airbag is fixedly arranged on the outer side of the insertion end of the nasopharyngeal airway body.

[0014] Optionally, a transparent tubing is coaxially fixed to the outside of the nasopharyngeal airway body. The transparent tubing has multiple evenly distributed micropores on its sidewall. The inside of the transparent tubing is filled with pure cotton gauze. A telescopic tubing is fixedly connected to one end of the transparent tubing. The other end of the telescopic tubing is fixedly connected to multiple first micropores on the spherical cover.

[0015] The beneficial effects of the nasopharyngeal airway of this invention are:

[0016] 1. The nasopharyngeal airway is fixed in position by compressing and deforming the outer side of pure cotton gauze and fitting it into the patient's nasal cavity;

[0017] 2. Due to inflammation causing local heat and swelling inside the patient's nasal cavity, the shape memory alloy plate straightens upon heating, driving the arc-shaped baffle to rotate relative to the spherical cover, connecting the first and second micropores. At the same time, the rubber ball expands upon heating, driving the medicine in the storage space to be discharged outward through the first and second micropores, thus reducing inflammation and swelling.

[0018] 3. By squeezing the swollen inner wall of the patient's nasal cavity to absorb the medicine, the pure cotton gauze is evenly coated with the medicine on the inner wall of the patient's nasal cavity. At the same time, the pure cotton gauze also plays a role in cushioning protection and improving comfort.

[0019] 4. By bending and restoring the shape memory alloy plate, the arc baffle is driven to rotate in the opposite direction relative to the spherical cover, so that the first micropore and the second micropore are misaligned, thus sealing the storage space. At the same time, when the rubber ball shrinks and restores, the storage space is automatically filled with external medicine due to negative pressure, so that it can be used next time.

[0020] 5. The multi-layered structure provides support to prevent swelling of the nasal cavity wall from compressing the nasopharyngeal airway and affecting ventilation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the nasopharyngeal airway according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall internal structure of the nasopharyngeal airway according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the herbal medicine squeezing structure in the nasopharyngeal airway according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the drug-filled structure in the nasopharyngeal airway according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the arc-shaped L-plate and arc-shaped baffle structure in the nasopharyngeal airway according to an embodiment of the present invention;

[0026] Figure 6 for Figure 2 Enlarged view of the structure at point A in the image;

[0027] Figure 7 for Figure 2 Enlarged view of the structure at point B in the image;

[0028] Figure 8This is a schematic diagram of the nasopharyngeal airway body structure in an embodiment of the present invention;

[0029] Explanation of reference numerals in the attached drawings: 100, Nasopharyngeal airway body; 200, PP plastic tube; 300, Rubber ball; 400, Spherical cover; 401, First micropore; 500, Arc-shaped L-plate; 501, Arc-shaped baffle; 502, Second micropore; 503, Shape memory alloy plate; 600, Pure cotton gauze; 700, Connecting tube; 701, Flexible tube; 702, One-way valve; 703, Sleeve; 704, Conical hole; 705, Metal ball; 706, Spring; 707, Annular plate; 708, Sealing gasket; 800, Drug reservoir tube; 801, Piston; 802, Limiting ring; 803, Push rod; 804, Support rod; 900, Positioning ring; 1000, Transparent flexible tube; 1001, Micropore; 1002, Telescopic flexible tube. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0033] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0034] like Figure 1-8As shown, this embodiment of the invention provides a nasopharyngeal airway, including a nasopharyngeal airway body 100, a rubber ball 300, a spherical cover 400, a first micropore 401, an arc-shaped baffle 501, a second micropore 502, a shape memory alloy plate 503, and a pure cotton gauze 600. The rubber ball 300 is sleeved on the outside of the nasopharyngeal airway body 100, the spherical cover 400 is sleeved on the outside of the rubber ball 300, and the pure cotton gauze 600 is sleeved on the outside of the spherical cover 400. A plurality of first micropores 401 are evenly distributed in the sidewall of the spherical cover 400, and a plurality of arc-shaped baffles 501 are evenly distributed circumferentially on the inner wall of the spherical cover 400. Above, multiple second micropores 502 are evenly arranged inside the arc-shaped baffle 501, and multiple shape memory alloy plates 503 are evenly distributed and connected to the corresponding arc-shaped baffles 501. The space between the outer side of the rubber ball 300 and the inner side of the spherical cover 400 is a storage space for storing medicine. When the rubber ball 300 expands or contracts due to heat, it drives the storage space to discharge medicine outward or absorb medicine inward. When the shape memory alloy plate 503 straightens or bends due to heat, it drives the arc-shaped baffle 501 to rotate relative to the spherical cover 400 in both directions, so that the first micropore 401 and the second micropore 502 can be connected or staggered.

[0035] In this embodiment, the conical head at the front end of the nasopharyngeal airway body 100 is inserted into the pharynx through the patient's nasal cavity. The outer side of the pure cotton gauze 600 is compressed and deformed, locking into the patient's nasal cavity to fix the position of the nasopharyngeal airway body 100. When inflammation occurs inside the patient's nasal cavity, causing local heat and swelling, the shape memory alloy plate 503 straightens due to heat, driving the arc-shaped baffle 501 to rotate relative to the spherical cover 400, connecting the first micropore 401 and the second micropore 502. Simultaneously, the rubber ball 300 expands due to heat, causing the storage space to discharge medication. The medication then enters the corresponding first micropore 401 through multiple second micropores 502, and then passes through the first micropore 401... The medicine flows to the pure cotton gauze 600, which absorbs the medicine. Due to the swelling of the patient's nasal cavity wall, the pure cotton gauze 600 is squeezed, causing the medicine inside the pure cotton gauze 600 to be squeezed out and evenly coated on the patient's nasal cavity wall. The medicine disinfects and reduces inflammation at the inflamed area. When the inflammation is relieved, the swelling of the patient's nasal cavity wall decreases and the temperature drops. At this time, the shape memory alloy plate 503 bends back and drives the arc-shaped baffle 501 to rotate in the opposite direction relative to the spherical cover 400, so that the first micropore 401 and the second micropore 502 are misaligned. At the same time, when the rubber ball 300 contracts back, the storage space is automatically filled with external medicine due to negative pressure, so that it can be used next time.

[0036] The nasopharyngeal airway body 100 is fixed in position by compressing and deforming the outer side of the pure cotton gauze 600 and fitting it into the patient's nasal cavity. Inflammation inside the patient's nasal cavity causes local heat and swelling, which heats and straightens the shape memory alloy plate 503, driving the arc-shaped baffle 501 to rotate relative to the spherical cover 400. This connects the first micropore 401 and the second micropore 502, while the rubber ball 300 expands due to heat, causing the medicine in the storage space to be discharged outward through the first micropore 401 and the second micropore 502, thus reducing inflammation and swelling. The swelling of the inner wall of the patient's nasal cavity further compresses and squeezes the pure cotton gauze 600, which has absorbed the medicine. The pure cotton gauze 600 evenly coats the medicine onto the inner wall of the patient's nasal cavity, while also providing cushioning and protection, and improving comfort. The shape memory alloy plate 503 bends and recovers, driving the arc-shaped baffle 501 to rotate in the opposite direction relative to the spherical cover 400, causing the first micropore 401 and the second micropore 502 to be staggered, thus sealing the storage space. At the same time, when the rubber ball 300 contracts and recovers, the storage space is automatically filled with external medicine due to negative pressure, so that it can be used again next time. The multi-layer structure supports the nasal cavity and prevents the swelling of the inner wall of the patient's nasal cavity from compressing the nasopharyngeal airway body 100 and affecting the ventilation volume.

[0037] like Figure 1 and Figure 3 As shown, optionally, a PP plastic tube 200 is slidably sleeved on the outside of the nasopharyngeal airway body 100, a positioning ring 900 is coaxially fixed at the end of the PP plastic tube 200, a rubber ball 300 is coaxially fixed on the outside of the PP plastic tube 200 on the inner side of the middle part, and multiple memory alloy plates 503 are evenly distributed circumferentially along the axis of the PP plastic tube 200 and their ends are fixed on the outside of the PP plastic tube 200.

[0038] In this embodiment, based on the principle of thermal expansion and contraction, the rubber ball 300 increases in volume due to the weakening of intermolecular interaction forces and the increase in intermolecular distance as the temperature rises. The bending and straightening principle of the shape memory alloy plate 503 is mainly based on its shape memory effect and superelasticity. Since this is existing technology, its principle will not be elaborated here. The positioning ring 900 drives the PP plastic tube 200 to slide on the outside of the nasopharyngeal airway body 100. The positioning ring 900 is made of a telescopic circular soft material. After the nasopharyngeal airway body 100 is inserted into the larynx, the positioning ring 900 can move to the proximal end of the nose for fixation, thereby accurately fixing the depth of the nasopharyngeal airway body 100 into the nasopharynx, improving the stability and accuracy of the nasopharyngeal airway body 100, and also increasing the patient's comfort.

[0039] like Figure 2 , Figure 3 and Figure 6As shown, optionally, the inner side of the spherical cover 400 is coaxially fixed to the outer side of the PP plastic tube 200, and a plurality of first micropores 401 are evenly distributed along the spherical surface of the spherical cover 400 and are opened through the side wall. The inner storage space of the spherical cover 400 is connected to the outside through the first micropores 401, and the inner side of the pure cotton gauze 600 is fixed to the outer side of the spherical cover 400.

[0040] In this embodiment, the inner storage space of the spherical cover 400 is filled with medicine. When inflammation occurs inside the patient's nasal cavity, causing local heat and swelling, the rubber ball 300 expands due to heat, squeezing the medicine in the storage space out through the first micropore 401. The discharged medicine is absorbed by the pure cotton gauze 600. The swelling of the patient's nasal cavity wall squeezes the pure cotton gauze 600, squeezing out the medicine and evenly coating it on the nasal cavity wall. Here, the pure cotton gauze 600 is not only fixed by the deformable nasopharyngeal airway body 100, solving the disadvantage of the nasopharyngeal airway body 100 shifting and sliding, but also absorbs and evenly squeezes out the medicine, so that the patient's nasal cavity wall is evenly coated with medicine. In addition, it can also cushion and protect the patient's nasal cavity wall, improving comfort.

[0041] like Figure 3 , Figure 4 and Figure 5 As shown, optionally, arc-shaped L-plates 500 are symmetrically arranged on both sides of the arc-shaped baffle 501. The arc-shaped L-plates 500 are fixed on the inner wall of the spherical cover 400. The outer side of the arc-shaped baffle 501 and the inner side of the arc-shaped L-plate 500 are matched in shape and slidably connected to each other. The arc-shaped baffle 501 is slidably connected to the inner wall of the spherical cover 400. Multiple second micro-holes 502 are evenly opened inside the arc-shaped baffle 501 along the shape trajectory direction of the arc-shaped baffle 501. The memory alloy plate 503 is fixed on the inner side of the arc-shaped baffle 501 at one end away from the PP plastic tube 200.

[0042] In this embodiment, the appendix Figure 3 and appendix Figure 4The direction of the middle arrow indicates the flow direction of the medicine. The first micropore 401 and the second micropore 502 correspond one-to-one. The structural design of the arc-shaped L-plate 500 allows the arc-shaped baffle 501 to rotate relative to the inner wall of the spherical cover 400. The PP plastic tube 200 improves the sensitivity of the shape memory alloy plate 503 when it is bent and straightened. When the temperature rises, the shape memory alloy plate 503 straightens and drives the arc-shaped baffle 501 to rotate relative to the inner wall of the spherical cover 400, thus connecting the first micropore 401 and the second micropore 502. The storage space is connected to the outside through the interconnected first micropore 401 and second micropore 502, allowing the medicine to drain out. When the temperature decreases, the shape memory alloy plate 503 bends and drives the arc-shaped baffle 501 to rotate in opposite directions against the inner wall of the spherical cover 400, causing the first micropore 401 and second micropore 502 to shift apart, thus disconnecting the storage space from the outside and preventing the medicine from draining out. Then, the amount of medicine in the storage space decreases, creating a negative pressure, and the external medicine automatically flows into the storage space. The spherical cover 400, the arc-shaped L-plate 500, and the arc-shaped baffle 501 are all medical-grade plastic parts.

[0043] like Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, optionally, a connecting pipe 700 is fixedly connected to the outside of the spherical cover 400. The connecting pipe 700 passes through the inside of the positioning ring 900 and is fixedly connected to a hose 701 at its outer end. A sleeve 703 is coaxially fixed to the outer side of the hose 701 away from the connecting pipe 700. A drug storage tube 800 is detachably installed on the outside of the sleeve 703. An elastic mechanism is provided inside the sleeve 703, and a driving component is provided inside the drug storage tube 800. When the sleeve 703 and the drug storage tube 800 are installed together, the elastic mechanism is triggered by the driving component to connect the sleeve 703 and the drug storage tube 800. When the sleeve 703 and the drug storage tube 800 are disassembled, the elastic mechanism is triggered by the driving component to seal the inside of the sleeve 703.

[0044] In this embodiment, when the sleeve 703 and the drug storage tube 800 are installed together, the elastic mechanism is triggered by the driving component, driving the sleeve 703 and the drug storage tube 800 to connect. The drug storage tube 800 is filled with medicine. When the rubber ball 300 contracts and recovers, the amount of medicine in the storage space decreases, creating negative pressure. Medicine is drawn into the sleeve 703 through the hose 701, and then into the drug storage tube 800, realizing automatic medicine replenishment. Here, the drug storage tube 800 is made of transparent material. When it is observed that the medicine in the drug storage tube 800 is almost used up, the sleeve 703 and the drug storage tube 800 are disassembled. The elastic mechanism is triggered by the driving component, sealing the inside of the sleeve 703, so that external air will not enter the sleeve 703, and the medicine in the storage space will not flow out through the hose 701. Here, the PP plastic tube 200 can be moved by pulling the hose 701, thereby moving the positioning ring 900 outside the nasopharyngeal airway body 100, and positioning it by locking it in the nostril.

[0045] like Figure 2 and Figure 7 As shown, optionally, the outer side of the sleeve 703 away from the hose 701 is threaded to the inner side of the drug inlet of the drug storage tube 800. An annular plate 707 is coaxially fixed on the outer side of the sleeve 703, and a sealing gasket 708 is attached to the bottom end of the annular plate 707. The sealing gasket 708 is sleeved on the outer side of the sleeve 703. A piston 801 is slidably arranged on the inner wall of the drug storage tube 800, and a limiting ring 802 is coaxially fixed on the inner side of the end of the drug storage tube 800 away from the drug inlet.

[0046] In this embodiment, the sleeve 703 is rotated and screwed into the inlet of the drug storage tube 800. When the sealing gasket 708 attached to the bottom of the annular plate 707 undergoes extrusion deformation with the end face of the drug storage tube 800, the sleeve 703 and the drug storage tube 800 are properly installed. The extrusion deformation of the sealing gasket 708 improves the installation sealing performance. The negative pressure causes the hose 701 to draw medicine into the drug storage tube 800. As the amount of medicine decreases, a negative pressure is generated inside the drug storage tube 800. The external air pressure squeezes the piston 801 through the inner side of the limiting ring 802, causing the piston 801 to push the medicine, thus realizing automatic medicine replenishment.

[0047] like Figure 2 and Figure 7 As shown, optionally, the elastic mechanism includes a tapered hole 704, a metal ball 705 and a spring 706. The tapered hole 704 is opened inside the end of the sleeve 703. The spring 706 is fixed on the inner end face of the sleeve 703. The metal ball 705 is fixed on the end of the spring 706 away from the hose 701. The spring 706 is always in a compressed state.

[0048] In this embodiment, when the sleeve 703 and the drug storage tube 800 are disassembled, the spring 706 drives the metal ball 705 to move and press against the inner wall of the tapered hole 704, so that the sleeve 703 is not connected to the external environment, ensuring that the medicine in the hose 701 does not flow outward.

[0049] like Figure 1 , Figure 7 and Figure 8 As shown, optionally, the driving component includes a push rod 803 and a support rod 804. The two ends of the support rod 804 are fixed on the inner wall of the drug storage tube 800 near the drug inlet. The push rod 803 is fixed in the middle of the end face of the support rod 804. A one-way valve 702 is fixedly installed on the hose 701 near the sleeve 703.

[0050] In this embodiment, when the sleeve 703 and the drug storage tube 800 are installed together, the push rod 803 is driven to squeeze the metal ball 705, causing the metal ball 705 to move and squeeze the spring 706. At this time, the gap between the outer side of the metal ball 705 and the inner wall of the conical hole 704 is opened, so that the sleeve 703 and the drug storage tube 800 are connected. When the sleeve 703 and the drug storage tube 800 are disassembled, the push rod 803 leaves the metal ball 705. Under the push of the spring 706 returning to its original deformation, the outer side of the metal ball 705 contacts the inner wall of the conical hole 704, the gap is eliminated, and the sleeve 703 is sealed. The one-way valve 702 restricts the medicine to flow in only one direction, so when the rubber ball 300 squeezes to discharge the medicine, the medicine will not return to the sleeve 703. When the rubber ball 300 contracts and returns to its original position, the medicine in the sleeve 703 flows into the spherical cover 400 through the one-way valve 702 and the hose 701.

[0051] like Figure 1 and Figure 8 As shown, optionally, the nasopharyngeal airway body 100 includes an oxygen supply module, a carbon dioxide collection module, a suction module, a camera module, a camera washing module, an airbag module, a nebulizer module, and a local anesthesia tube module. Multiple evenly distributed ventilation hoses are fixedly arranged circumferentially inside the nasopharyngeal airway body 100, and an airbag is fixedly arranged on the outside of the insertion end of the nasopharyngeal airway body 100.

[0052] In this embodiment, the middle part of the oxygen supply tube is located in the device body, and it includes an oxygen supply port extending from the front of the device body and an oxygen supply hole located inside the device body, with the oxygen supply hole and the oxygen supply port directly communicating. In actual use, the oxygen supply tube is connected to an external oxygen supply device, and the pressure of the supplied oxygen is adjusted by the oxygen supply device according to the patient's specific needs. Generally, the commonly used oxygen supply pressure range in clinical practice is between 0.2 and 0.4 MPa to meet the different oxygen inhalation needs of patients.

[0053] The middle part of the carbon dioxide collection tube is located outside the main body of the device. It includes a carbon dioxide output port extending from the front of the main body and a carbon dioxide collection port located outside the main body, with the collection port and the output port directly connected. The collection port is close to the patient's respiratory tract. When the patient exhales carbon dioxide, the gas enters the collection tube through the collection port, and then is delivered to an external carbon dioxide collection and analysis instrument for monitoring via a three-way connector through the output port. Medical staff can obtain relevant data on the patient's exhaled carbon dioxide in real time to understand the patient's respiratory and metabolic status.

[0054] The middle part of the suction tube is located outside the device body, including a suction port extending from the front of the device body and a suction hole located inside the device body, with the suction hole and suction port directly communicating. The suction tube is connected to a negative pressure suction device. When it is necessary to suction gastric fluid or waste, the negative pressure suction switch is turned on, and the negative pressure suction tube generates suction, drawing the gastric fluid or waste through the suction port into the suction tube and discharging it to an external collection device.

[0055] The camera module consists of a camera tube, camera, light source, camera guide wire, sterile plastic film, and camera power supply cable. The camera and light source are integrated and connected to one end of the camera guide wire, while the other end of the guide wire is connected to the camera power supply cable. The module is covered by a sterile plastic film. During intubation, the camera power supply cable provides power to the camera and light source. Images captured by the camera are transmitted to an external display device via the power supply cable, allowing medical personnel to observe the condition at the tip of the intubation tube in real time, such as the physiological structure of the airway and the presence of foreign objects, to facilitate accurate intubation.

[0056] The saline solution tubing and the negative pressure suction tubing are respectively located on both sides of the external port of the camera tubing. The negative pressure suction switch is connected to the negative pressure suction tubing via a tee. When the camera needs cleaning, first open the valve of the saline solution tubing to allow saline solution to flow out and rinse the camera. Then, turn on the negative pressure suction switch, and the negative pressure suction tubing will suck out the rinsing fluid and secretions from the camera surface together, keeping the camera clear.

[0057] The cuff module has a cuff fixed to the outside of the insertion end of the nasopharyngeal airway body 100. In emergency situations, when the gastroscopy is stopped, the ventilator is connected to the circuit to pressurize and fill the cuff to seal it. After the cuff seals the pharynx, it is connected to a mechanical ventilation device (simple breathing bag or anesthesia machine) through the nasopharyngeal airway to provide pressurized oxygen supply. The mechanical ventilation principle is pressurized air supply, which does not require the insertion of a trachea. It is operated only through the nasopharyngeal airway at the cuff in the pharynx. It forms a closed space and works in conjunction with the main pressurization module to achieve efficient emergency respiratory support.

[0058] The nebulized local anesthesia tube module includes a nebulized local anesthesia tube housed within the intubation body. The middle section of the nebulized local anesthesia tube is located inside the device body, with its front end extending beyond the front of the device body and equipped with a nebulized local anesthesia nozzle. The rear end connects to an external nebulized local anesthesia medication supply device. The nebulized local anesthesia tube is arranged parallel to other tubing within the intubation body, operating independently to avoid mutual interference. When nebulized local anesthesia treatment is required, the nebulized local anesthesia medication is delivered from the external supply device through the nebulized local anesthesia tube to the nebulized local anesthesia nozzle. The nebulized local anesthesia nozzle atomizes the medication and releases it into the patient's respiratory tract, providing local anesthesia to the tissues surrounding the intubation tube, reducing patient discomfort during intubation, and achieving local drug delivery. To ensure the effectiveness of nebulized local anesthesia, the nebulized local anesthesia nozzle is specially designed to uniformly atomize the medication into tiny particles, facilitating patient absorption. For example, the nozzles of the atomizing nozzle are precision-machined, with consistent and uniform aperture sizes, ensuring that the sprayed liquid droplets are within a suitable therapeutic range (generally 1-5μm). As this is existing technology, the connected equipment and specific usage process will not be described in detail here.

[0059] The device features independent yet interconnected oxygen supply tubing, carbon dioxide collection tubing, and suction tubing, enabling multiple operations to be performed simultaneously on a single intubation tube. This allows for the implementation of various modular functions without frequent instrument changes, reducing patient discomfort and infection risks, and improving medical efficiency. A visual camera module allows medical staff to observe the intubation location and the patient's internal condition in real time during intubation, significantly reducing the risk of accidental intubation into the esophagus or damage to the respiratory tract, thus improving the accuracy and safety of intubation. Simultaneously, the subglottic suction module effectively clears subglottic secretions, reducing the likelihood of lung infection and further ensuring patient safety. The optimized carbon dioxide collection tube accurately collects exhaled carbon dioxide, reducing interference from other gases and providing accurate carbon dioxide monitoring data for medical staff. This helps to better understand the patient's respiratory function and metabolic status, providing a reliable basis for diagnosis and treatment. The newly added nebulizer and local anesthesia modules enable the device to not only meet basic respiratory support and monitoring needs but also provide local anesthesia during intubation, reducing patient discomfort, and administering nebulized medication during treatment, expanding the device's clinical application and providing patients with more comprehensive treatment options.

[0060] like Figure 1 and Figure 2 As shown, optionally, a transparent tubing 1000 is coaxially fixed to the outside of the nasopharyngeal airway body 100. The side wall of the transparent tubing 1000 has a plurality of uniformly distributed micropores 1001. The inside of the transparent tubing 1000 is filled with pure cotton gauze 600. The end of the transparent tubing 1000 is fixedly connected to a telescopic tubing 1002. The other end of the telescopic tubing 1002 is fixedly connected to a plurality of first micropores 401 on the spherical cover 400.

[0061] In this embodiment, the medicine enters the telescopic flexible tube 1002 through multiple first micropores 401, then enters the transparent flexible tube 1000, and is absorbed by the pure cotton gauze 600 inside the transparent flexible tube 1000. The pure cotton gauze 600 that absorbs the medicine slowly permeates the medicine outward through the micropores 1001 to reduce inflammation on the inner surface of the nasopharynx that is in contact with the outside of the nasopharyngeal airway body 100.

[0062] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A nasopharyngeal airway, characterized in that, The device includes a nasopharyngeal airway body (100), a rubber ball (300), a spherical cover (400), a first micropore (401), an arc-shaped baffle (501), a second micropore (502), a shape memory alloy plate (503), and pure cotton gauze (600). The rubber ball (300) is fitted outside the nasopharyngeal airway body (100), the spherical cover (400) is fitted outside the rubber ball (300), and the pure cotton gauze (600) is fitted outside the spherical cover (400). Multiple first micropores (401) are evenly distributed within the sidewall of the spherical cover (400), and multiple arc-shaped baffles (501) are evenly distributed circumferentially on the inner wall of the spherical cover (400). The second micropore (502) is uniformly disposed within the arc-shaped baffle (501). Multiple memory alloy plates (503) are uniformly distributed and connected to the corresponding arc-shaped baffles (501). The space between the outer side of the rubber ball (300) and the inner side of the spherical cover (400) is a storage space. The storage space is used to store medicine. When the rubber ball (300) expands or contracts due to heat, it drives the storage space to discharge medicine outward or absorb medicine inward. When the memory alloy plate (503) straightens or bends due to heat, it drives the arc-shaped baffle (501) to rotate relative to the spherical cover (400) in both directions, so that the first micropore (401) and the second micropore (502) can be connected or staggered.

2. The nasopharyngeal airway as described in claim 1, characterized in that, A PP plastic tube (200) is slidably sleeved on the outside of the nasopharyngeal airway body (100). A positioning ring (900) is coaxially fixed at the end of the PP plastic tube (200). The inner side of the middle part of the rubber ball (300) is coaxially fixed on the outside of the PP plastic tube (200). A plurality of memory alloy plates (503) are evenly distributed circumferentially along the axis of the PP plastic tube (200) and their ends are fixed on the outside of the PP plastic tube (200).

3. The nasopharyngeal airway as described in claim 1, characterized in that, The spherical cover (400) is coaxially fixed to the outer side of the PP plastic tube (200) on the inner side of the middle part. Multiple first micropores (401) are evenly distributed along the spherical surface of the spherical cover (400) and are opened through the side wall. The storage space inside the spherical cover (400) is connected to the outside through the first micropores (401). The pure cotton gauze (600) is fixed to the outer side of the spherical cover (400) on the inner side.

4. The nasopharyngeal airway as described in claim 1, characterized in that, The arc-shaped baffle (501) is symmetrically provided with arc-shaped L-plates (500) on both sides. The arc-shaped L-plates (500) are fixed on the inner wall of the spherical cover (400). The outer side of the arc-shaped baffle (501) and the inner side of the arc-shaped L-plate (500) are matched in shape and slidably connected to each other. The arc-shaped baffle (501) is slidably connected to the inner wall of the spherical cover (400). A plurality of second micro-holes (502) are evenly opened inside the arc-shaped baffle (501) along the shape trajectory direction of the arc-shaped baffle (501). The memory alloy plate (503) is fixed on the inner side of the arc-shaped baffle (501) at the end opposite to the PP plastic tube (200).

5. The nasopharyngeal airway as described in claim 1, characterized in that, A connecting pipe (700) is fixedly connected to the outside of the spherical cover (400). The connecting pipe (700) passes through the inside of the positioning ring (900) and is fixedly connected to a flexible tube (701) at its outer end. A sleeve (703) is coaxially fixed to the outer side of the flexible tube (701) away from the connecting pipe (700). A drug storage tube (800) is detachably installed on the outside of the sleeve (703). An elastic mechanism is provided inside the sleeve (703), and a driving component is provided inside the drug storage tube (800). When the sleeve (703) and the drug storage tube (800) are installed together, the elastic mechanism is triggered by the driving component to connect the driving sleeve (703) and the drug storage tube (800). When the sleeve (703) and the drug storage tube (800) are disassembled together, the elastic mechanism is triggered by the driving component to seal the inside of the sleeve (703).

6. The nasopharyngeal airway as described in claim 5, characterized in that, The outer side of the sleeve (703) away from the hose (701) is threaded to the inner side of the drug inlet of the drug storage tube (800). An annular plate (707) is coaxially fixed on the outer side of the sleeve (703), and a sealing gasket (708) is attached to the bottom end of the annular plate (707). The sealing gasket (708) is sleeved on the outer side of the sleeve (703). A piston (801) is slidably arranged on the inner wall of the drug storage tube (800). A limiting ring (802) is coaxially fixed on the inner side of the end of the drug storage tube (800) away from the drug inlet.

7. The nasopharyngeal airway as described in claim 5, characterized in that, The elastic mechanism includes a tapered hole (704), a metal ball (705), and a spring (706). The tapered hole (704) is opened inside the end of the sleeve (703). The spring (706) is fixedly mounted on the inner end face of the sleeve (703). The metal ball (705) is fixedly mounted on the end of the spring (706) away from the hose (701). The spring (706) is always in a compressed state.

8. The nasopharyngeal airway as described in claim 5, characterized in that, The driving component includes a push rod (803) and a support rod (804). The two ends of the support rod (804) are fixed on the inner wall of the drug storage tube (800) near the drug inlet. The push rod (803) is fixed in the middle of the end face of the support rod (804). A one-way valve (702) is fixedly installed on the hose (701) near the sleeve (703).

9. The nasopharyngeal airway as described in claim 1, characterized in that, The nasopharyngeal airway body (100) includes an oxygen supply module, a carbon dioxide collection module, a suction module, a camera module, a camera washing module, an airbag module, and a nebulizing local anesthesia tube module. Multiple evenly distributed ventilation hoses are fixedly arranged circumferentially inside the nasopharyngeal airway body (100), and an airbag is fixedly arranged on the outside of the insertion end of the nasopharyngeal airway body (100).

10. The nasopharyngeal airway as described in claim 1, characterized in that, A transparent tubing (1000) is coaxially fixed to the outside of the nasopharyngeal airway body (100). The transparent tubing (1000) has multiple evenly distributed micropores (1001) on its side wall. The inside of the transparent tubing (1000) is filled with pure cotton gauze (600). The end of the transparent tubing (1000) is fixedly connected to a telescopic tubing (1002). The other end of the telescopic tubing (1002) is fixedly connected to multiple first micropores (401) on the spherical cover (400).

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