High-flow oxygen therapy rhinobyon catheter with rotatable rhinobyon

Abstract

The invention relates to the technical field of medical instruments, and provides a high-flow oxygen therapy nasal plug catheter with a rotatable nasal plug, comprising: a fixed base provided with a fixing band; the nasal plug catheter body is arranged on the fixed base, an oxygen supply hose is connected to the nasal plug catheter body, and a first ventilation cavity communicated with the oxygen supply hose is formed in the nasal plug catheter body; a rotatable nose plug body is rotationally connected to the position, close to the nostrils of the patient, of the nose plug catheter body, the rotatable nose plug body rotates around the center shaft of the nose plug catheter body, and a nose plug column is arranged at the position, close to the nostrils of the patient, of the rotatable nose plug body; a second ventilation cavity communicated with the first ventilation cavity and the nose plug column is formed in the rotatable nose plug body. When a nasal feeding tube is inserted into the nostril of a patient, the rotatable nose plug body corresponding to the nostril can be rotated to a closing gear, so that the nose plug column on the rotatable nose plug body deviates from the nostril; oxygen is provided for the patient through the other rotatable nasal plug body. The nasal obstruction columns on the same side and the nasal feeding tube are prevented from squeezing to damage the nostrils of a patient, and the comfort of the patient is improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a rotatable high-flow oxygen therapy nasal cannula. Background Technology

[0002] According to the World Health Organization, respiratory diseases are the second leading cause of death after cardiovascular and cerebrovascular diseases. Respiratory support therapy is the most important treatment for respiratory diseases and the most important mode of organ function support. It includes nasal cannula oxygen therapy, face mask oxygen therapy, high-flow oxygen therapy, endotracheal intubation oxygen therapy, and extracorporeal membrane oxygenation (ECMO). Among them, high-flow nasal cannula oxygen therapy (HFNC) has been widely used in clinical practice in recent years. HFNC refers to an oxygen therapy method that delivers a certain concentration of air oxygen mixed with high-flow gas, heated and humidified, directly to the patient through a non-sealed nasal cannula. The equipment used in NFNC (Non-Invasive Mechanical Ventilation) is called a respiratory humidification therapy device. As a special type of non-invasive mechanical ventilation, it refers to an oxygen therapy method that provides a relatively constant oxygen concentration (21-100%), controlled relative humidity (31-37℃), and high-flow-rate (8-80 L / min) oxygen inhalation. Common respiratory diseases requiring high-flow-rate nasal oxygen therapy include severe lung infections, acute respiratory failure, acute respiratory distress syndrome, and chronic obstructive pulmonary disease with acute exacerbations. The high-flow-rate nasal cannula supplies oxygen to the patient through two nasal prongs inserted into the patient's nostrils. The nasal prongs are usually made of soft silicone, which can effectively reduce irritation to the nasal mucosa.

[0003] However, among all the patients mentioned above who received high-flow nasal cannula oxygen therapy, some were unable to eat orally and required the use of an indwelling nasogastric tube. This allowed healthcare professionals to administer liquid food, nutrition, medication, or perform gastrointestinal decompression. When patients used both a high-flow nasal cannula and a nasogastric or nasoenteric tube, the nasal plug on the cannula would press against the feeding tube, causing extreme discomfort and, over time, pressure sores around the nose.

[0004] Therefore, the aforementioned technical defects urgently need to be addressed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a rotatable high-flow oxygen therapy nasal cannula, which aims to avoid pressure injury to the patient's nostrils caused by the mutual compression of the nasal cannula and the nasogastric tube inside the nostril, and to improve the flexibility of nasal cannula use and patient comfort.

[0006] The technical solution adopted by this application to solve the technical problem is as follows: A rotatable high-flow oxygen therapy nasal cannula, comprising: A fixation base is provided with a fixation strap, which is used to fix the fixation base next to the patient's nostrils; And the nasal cannula body, the nasal cannula body is set on a fixed base, at least one of the two ends of the nasal cannula body is connected to an oxygen supply hose, and a first ventilation cavity connected to the oxygen supply hose is opened in the nasal cannula body, the oxygen supply hose is used to connect to an external oxygen supply device. The nasal cannula body is rotatably connected to at least one rotatable nasal plug near the patient's nostril. The rotatable nasal plug rotates around the central axis of the nasal cannula body. The rotatable nasal plug is provided with a nasal plug column for supplying oxygen to the patient near the patient's nostril. The rotatable nasal plug body has a second ventilation cavity that communicates with the first ventilation cavity and the nasal plug column.

[0007] In one possible implementation, a rotatable nasal plug is rotatably connected to the nasal plug tube body near the patient's left and right nostrils, with the two nasal plugs extending toward the patient's left and right nostrils, respectively.

[0008] In one possible implementation, the nasal cannula body includes: a first end body, an intermediate fixing part, and a second end body, wherein at least one of the first end body, the intermediate fixing part, and the second end body is fixedly connected to a fixing base. One rotatable nose plug is rotatably connected between the first end body and the intermediate fixing part via a pivot pin; the other rotatable nose plug is rotatably connected between the second end body and the intermediate fixing part via a pivot pin.

[0009] In one possible implementation, both the first and second end bodies are connected to oxygen supply hoses, and the two oxygen supply hoses are respectively connected to two rotatable nasal plugs.

[0010] In one possible implementation, a first ventilation cavity is disposed within a first end body and a second end body, and at least one first eccentric hole is provided at one end of the rotatable nasal plug near the first end body or the second end body. The first eccentric hole is offset from the rotation axis of the rotatable nasal plug, and a second eccentric hole is provided on the first end body and the second end body. The rotatable nasal plug has an open position and a closed position. When the rotatable nasal plug is turned to the open position, the first eccentric hole and the second eccentric hole correspond to each other so that the first ventilation cavity and the second ventilation cavity are connected. When the rotatable nasal plug is turned to the closed position, the first eccentric hole and the second eccentric hole are misaligned so that the first ventilation cavity and the second ventilation cavity are not connected.

[0011] In one possible implementation, an eccentric groove is provided at one end of the rotatable nose plug that fits into the middle fixing part. The eccentric groove is offset from the rotation axis of the rotatable nose plug. A helical elastic element and a snap-fit ​​ball are stacked on the eccentric groove in sequence. A snap-fit ​​groove is provided on the middle fixing part corresponding to the position of the snap-fit ​​ball. The snap-fit ​​ball and the snap-fit ​​groove snap-fit ​​each other.

[0012] In one possible implementation, a handle is provided on the outer wall of the rotatable nose plug, the handle being used to move the rotatable nose plug, and the handle being integrally formed with the rotatable nose plug.

[0013] In one possible implementation, at least one of the nasal cannula body and the rotatable nasal plug body has a foam dressing layer covering its outer surface.

[0014] In one possible implementation, a fixing strap is connected to both ends of a fixing base, and buffer pads are provided at both ends of the fixing base.

[0015] In one possible implementation, a sponge is provided on the fixing strap, and the fixing strap passes through the inside of the sponge so that the sponge can slide on the fixing strap.

[0016] Compared with existing technologies, this application provides a rotatable nasal cannula for high-flow oxygen therapy. When using this invention, if a patient requiring high-flow oxygen therapy also has a nasal feeding tube inserted in their nostril, medical personnel can rotate the rotatable nasal plug on the same side as the affected nostril to the closed position, causing the nasal plug to shift off the nostril; and then rotate the other rotatable nasal plug to the open position to provide oxygen to the patient. This avoids pressure injuries to the patient's nostril caused by the nasal plug and feeding tube pressing against each other inside the nostril. It also improves the flexibility of nasal cannula use and patient comfort. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a rotatable high-flow oxygen therapy nasal cannula provided in this embodiment; Figure 2 This is a schematic diagram of the overall structure of the nasal plug catheter body and the oxygen supply hose of a rotatable high-flow oxygen therapy nasal plug catheter provided in this embodiment. Figure 3 This is an exploded view of the overall structure of the nasal cannula body of a rotatable high-flow oxygen therapy nasal cannula provided in this embodiment. Figure 4 This is an exploded view of another integral structure of the nasal cannula body of a rotatable high-flow oxygen therapy nasal cannula provided in this embodiment.

[0019] In the diagram: 1. Fixed base; 11. Oxygen supply hose; 12. Buffer pad; 13. Buffer pad; 2. Nasal cannula body; 21. First end body; 22. Intermediate fixing part; 221. Snap-fit ​​groove; 23. Second end body; 231. First ventilation cavity; 232. Second eccentric hole; 3. Rotatable nasal plug body; 31. Nasal plug column; 32. Second ventilation cavity; 33. First eccentric hole; 34. Eccentric groove; 341. Spiral elastic element; 342. Snap-fit ​​ball; 35. Handle; 36. Shaft pin; 4. Fixing strap; 41. Sponge. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0023] Furthermore, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0024] This invention provides, for example Figure 1 , Figure 2 and Figure 3 As shown, a rotatable high-flow oxygen therapy nasal cannula is used to deliver oxygen to a patient through the nasal cavity. Its main structure includes a fixing base 1 and a nasal cannula body 2. The fixing base 1 is provided with a fixing strap 4, which is used to fix the fixing base 1 next to the patient's nostril. The length of the fixing strap 4 is adjustable; in some embodiments, the fixing strap 4 is provided with a length adjuster to adjust its length to suit different patients. The nasal cannula body 2 is mounted on the fixing base 1. The fixing base 1 and the nasal cannula body 2 can be detachably connected or partially integrally formed. At least one end of the nasal cannula body 2 is connected to an oxygen supply hose 11. In this embodiment, the high-flow oxygen therapy nasal cannula has a high-flow oxygen supply hose 11 connected to one end of the nasal cannula body 2 to increase the oxygen flow rate. In other embodiments, the nasal cannula body 2 has an oxygen supply hose 11 at both ends along its length to deliver oxygen to the nasal cannula body 2. A first ventilation cavity 231 communicating with the oxygen supply hose 11 is provided inside the nasal cannula body 2. The oxygen supply hose 11 is used to connect to an external oxygen supply device. At least one rotatable nasal plug 3 is rotatably connected to the nasal cannula body 2 near the patient's nostril. The rotatable nasal plug 3 rotates around the central axis of the nasal cannula body 2. A nasal plug 31 for supplying oxygen to the patient is provided on the rotatable nasal plug 3 near the patient's nostril. A second ventilation cavity 32 communicating with the first ventilation cavity 231 and the nasal plug 31 is provided inside the rotatable nasal plug 3. In use, the rotatable nasal plug 3 is rotated to the open position, allowing the nasal plug 31 to be inserted into the patient's nostril to deliver oxygen. When the rotatable nasal plug 3 is rotated to the closed position, the nasal plug 31 avoids the patient's nostril to prevent the nasal plug 31 from touching the nasogastric tube in the patient's nostril. It is understandable that when the rotatable nasal plug 3 is rotated to the closed position, the vent on the nasal plug 31 needs to be blocked to prevent oxygen from escaping from the closed nasal plug 31.

[0025] It should be noted that when a patient uses both a nasal cannula and a feeding tube simultaneously, the nasal plug on the nasal cannula will press against the feeding tube, causing discomfort to the patient's nostrils and potentially leading to pressure sores over time. In this invention, when both a feeding tube and a high-flow oxygen therapy nasal cannula are inserted into the patient's nostril, medical personnel can rotate the rotatable nasal plug 3 on the same side as the nostril to the closed position, shifting the nasal plug 31 off the nostril; and rotate the other rotatable nasal plug 3 to the open position to provide oxygen to the patient. This avoids pressure sores on the patient's nostrils caused by the nasal plug 31 pressing against the feeding tube. It also improves the flexibility of nasal cannula use. When removing the feeding tube from the patient's nostril, both rotatable nasal plugs 3 can be rotated to the open position, allowing both nasal plugs 31 to be inserted into both nostrils simultaneously to supply oxygen, thereby improving the efficacy of high-flow oxygen therapy.

[0026] In this embodiment, the fixing strap 4 can be a mesh cap type fixing strap 4 or an elastic fixing strap 4. Among them, the mesh cap type fixing strap 4 has better wrapping properties and can more stably fix the fixing base 1 of the nasal oxygen tube, preventing it from shifting.

[0027] Further, such as Figure 1 , Figure 2 and Figure 3 As shown, a rotatable nasal plug 3 is rotatably connected to the nasal catheter body 2 near the patient's left and right nostrils, respectively, with two nasal plug posts 31 extending towards the patient's left and right nostrils. Furthermore, the nasal plug posts 31 and the rotatable nasal plug bodies 3 are connected by rotatable ball joints, allowing the angle between them to be adjusted to accommodate patients with different nose sizes. This increases the patient's comfort when wearing the nasal catheter.

[0028] Further, such as Figure 3 As shown, the nasal cannula body 2 includes: a first end body 21, a middle fixing part 22, and a second end body 23. At least one of the first end body 21, the middle fixing part 22, and the second end body 23 is fixedly connected to the fixing base 1. In some embodiments, the nasal cannula body 2 is cylindrical in shape, and the first end body 21, the rotatable nasal plug body 3, the middle fixing part 22, another rotatable nasal plug body 3, and the second end body 23 are sequentially spliced ​​to form the cylindrical nasal cannula body 2. At least one of the first end body 21, the middle fixing part 22, and the second end body 23 is connected to the fixing base 1, thereby fixing the nasal cannula body 2 to the fixing base 1.

[0029] The rotatable nose plug 3 is rotatably connected between the first end body 21 and the intermediate fixing part 22 via a pin 36. When the rotatable nose plug 3 is rotated, both the first end body 21 and the intermediate fixing part 22 remain stationary. The other rotatable nose plug 3 is rotatably connected between the second end body 23 and the intermediate fixing part 22 via a pin 36. When the rotatable nose plug 3 is rotated, both the first end body 21 and the intermediate fixing part 22 remain stationary. This avoids disturbing the other rotatable nose plug 3 when rotating one rotatable nose plug 3, thus affecting the efficiency of adjusting the rotatable nose plug 3.

[0030] In some other embodiments, both the first end body 21 and the second end body 23 are connected to oxygen supply hoses 11, and the two oxygen supply hoses 11 are respectively connected to two rotatable nasal plugs 3.

[0031] It should be noted that in this embodiment, since the nasal cannula body 2 is provided with two rotatable nasal plugs 3, medical personnel can adjust the ventilation of either nasal plug column 31 arbitrarily. In some embodiments, both the first end body 21 and the second end body 23 are connected to oxygen supply hoses 11, so that oxygen can be supplied to the first end body 21 and the second end body 23 separately. Specifically, one oxygen supply hose 11 is connected to the end of the first end body 21 away from the second end body 23, and the other oxygen supply hose 11 is connected to the end of the second end body 23 away from the first end body 21. This allows the two oxygen supply hoses 11 to avoid the patient's mouth and prevent interference with the patient's mouth movements.

[0032] Furthermore, the rotatable high-flow oxygen therapy nasal cannula needs to be connected to an external oxygen supply device before actual use. In some embodiments, a pressure sensor can be installed on the external oxygen supply device or the oxygen pipeline to provide feedback on the air pressure in the pipeline. This allows the external oxygen supply device to adjust the oxygen supply in a timely manner. For example, when both rotatable nasal plugs 3 on the nasal cannula body 2 are closed simultaneously, the air pressure in the oxygen supply pipeline will be relatively high. At this time, the pressure sensor will send a feedback to the external oxygen supply device indicating that the air pressure in the pipeline is too high. When the pressure sensor detects that the air pressure in the pipeline is too high, the machine will issue an alarm to remind medical staff to check whether both nasal plugs are closed. This alarm can prevent accidental operation that could prevent the patient from receiving oxygen.

[0033] Further, such as Figure 3As shown, a first ventilation cavity 231 is disposed within a first end body 21 and a second end body 23. It is understood that the two first ventilation cavities within the first and second end bodies are interconnected. In some embodiments, the two first ventilation cavities within the first end body 21 and the second end body 23 can be interconnected via a fixed base 1. Specifically, a ventilation channel is provided on the fixed base, which is used to connect the two first ventilation cavities 231 on the first end body 21 and the second end body 23, allowing the two first ventilation cavities 231 on the first end body 21 and the second end body 23 to be interconnected via the ventilation channel on the fixed base. At least one first eccentric hole 33 is provided at one end of the rotatable nose plug 3 near the first end body 21 or the second end body 23. The first eccentric hole 33 is offset from the rotation axis of the rotatable nose plug 3, and a second eccentric hole 232 is provided on the first end body 21 and the second end body 23. This allows the first eccentric hole 33 to be offset from the second eccentric hole 232 as the rotatable nose plug 3 rotates. Thus, when the rotatable nose plug 3 is in the open position, the first eccentric hole 33 corresponds to the second eccentric hole 232, thereby connecting the first ventilation cavity 231 and the second ventilation cavity 32. When the rotatable nose plug 3 is in the closed position, the first eccentric hole 33 and the second eccentric hole 232 are offset, thereby preventing the first ventilation cavity 231 from connecting with the second ventilation cavity 32. At this time, the first ventilation cavity 231 is blocked, and oxygen inside cannot flow out through the second eccentric hole 232.

[0034] The rotatable nasal plug 3 has an open position and a closed position. When the rotatable nasal plug 3 is rotated to the open position, the first eccentric hole 33 and the second eccentric hole 232 correspond to each other, so that the first ventilation cavity 231 and the second ventilation cavity 32 are connected. When the rotatable nasal plug 3 is rotated to the closed position, the first eccentric hole 33 and the second eccentric hole 232 are misaligned, so that the first ventilation cavity 231 and the second ventilation cavity 32 are not connected. Specifically, in use, the rotatable nasal plug 3 is rotated to the open position so that the nasal plug 31 can be inserted into the patient's nostril to deliver oxygen. When the rotatable nasal plug 3 is rotated to the closed position, the nasal plug 31 avoids the patient's nostril to prevent the nasogastric tube in the patient's nostril from being touched.

[0035] Further, such as Figure 3 and Figure 4 As shown, an eccentric groove 34 is provided at one end of the rotatable nose plug body 3 that is attached to the middle fixing part 22. The eccentric groove 34 is offset from the rotation axis of the rotatable nose plug body 3. A spiral elastic element 341 and a snap-fit ​​ball 342 are stacked on the eccentric groove 34 in sequence. A snap-fit ​​groove 221 is provided on the middle fixing part 22 at the position corresponding to the snap-fit ​​ball 342. The snap-fit ​​ball 342 and the snap-fit ​​groove 221 snap-fit ​​each other.

[0036] Specifically, in both the closed and open positions, the rotatable nasal plug 3 has two locking grooves 221 on the middle fixing part 22 corresponding to the locking ball 342. When the rotatable nasal plug 3 switches positions, the locking ball 342 is pushed out of the locking groove 221. Furthermore, when the rotatable nasal plug 3 enters the next position, the locking ball 342 impacts and enters the locking groove 221 under the elastic force of the helical elastic element 341, producing an impact sound so that medical personnel can clearly know that the rotatable nasal plug 3 has completed the position switch. This improves the accuracy of the rotatable nasal plug 3 in switching positions and enhances the user experience.

[0037] Further, such as Figure 1 , Figure 2 and Figure 3 As shown, a lever 35 is provided on the outer wall of the rotatable nasal plug 3. The lever 35 is used to rotate the rotatable nasal plug 3, and the lever 35 is integrally formed with the rotatable nasal plug 3. It is understood that this is to avoid bacterial contamination of the nasal plug 31 by medical personnel's fingers directly touching it. In this embodiment, a lever 35 is provided on the outer wall of the rotatable nasal plug 3. When it is necessary to adjust the position of the rotatable nasal plug 3, medical personnel only need to use their fingers to flick the lever 35 to easily switch the positions of the rotatable nasal plug 3.

[0038] Furthermore, at least one of the nasal cannula body 2 and the rotatable nasal plug body 3 has a foam dressing layer covering its outer surface. It is understood that the foam dressing has a certain cushioning effect and good skin-friendliness. Therefore, covering at least one of the nasal cannula body 2 and the rotatable nasal plug body 3 with a foam dressing layer can improve patient comfort and effectively reduce the likelihood of pressure sores on the patient's face and nostrils.

[0039] Further, such as Figure 1 As shown, the fixing strap 4 is connected to both ends of the fixing base 1, and buffer pads 1312 are respectively provided at both ends of the fixing base 1.

[0040] Understandably, the cushioning pad 1312 has a certain degree of elasticity, thus reducing pressure marks on the patient's face from the fixing base 1 and improving the patient's wearing comfort.

[0041] Furthermore, the fixation strap 4 is equipped with a sponge 41. It is understood that the sponge 41 has good elasticity and cushioning effect, thus effectively reducing the pressure of the fixation strap on the patient's skin. The fixation strap 4 passes through the inside of the sponge 41, allowing the sponge 41 to slide on the fixation strap 4. It is understood that the sponge 41 has excellent cushioning effect, further improving the patient's wearing comfort.

[0042] In summary, this application provides a rotatable nasal cannula for high-flow oxygen therapy. When using this invention, if a patient requiring high-flow oxygen therapy also has a nasal feeding tube inserted in their nostril, medical personnel can rotate the rotatable nasal plug 3 on the same side as the affected nostril to the closed position, causing the nasal plug post 31 on the rotatable nasal plug 3 to shift away from the nostril; and then rotate the other rotatable nasal plug 3 to the open position to provide oxygen to the patient. This avoids pressure injuries to the patient's nostrils caused by the nasal plug post 31 and the nasal feeding tube pressing against each other inside the nostril, thus improving the flexibility of nasal cannula use.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A rotatable, high-flow oxygen therapy nasal cannula, characterized in that, include: A fixing base, wherein a fixing strap is provided on the fixing base, the fixing strap being used to fix the fixing base next to the patient's nostrils; And a nasal cannula body, the nasal cannula body is disposed on the fixed base, at least one of the two ends of the nasal cannula body is connected to an oxygen supply hose, a first ventilation cavity is opened in the nasal cannula body and communicates with the oxygen supply hose, the oxygen supply hose is used to connect to an external oxygen supply device. The nasal cannula body is rotatably connected to at least one rotatable nasal plug near the patient's nostril. The rotatable nasal plug rotates around the central axis of the nasal cannula body. The rotatable nasal plug is provided with a nasal plug column for supplying oxygen to the patient near the patient's nostril. The rotatable nasal plug body has a second ventilation cavity that communicates with the first ventilation cavity and the nasal plug column.

2. The rotatable high-flow oxygen therapy nasal cannula according to claim 1, characterized in that, The nasal cannula body is rotatably connected to a rotatable nasal plug at a position near the patient's left and right nostrils, and the two nasal plugs extend toward the patient's left and right nostrils, respectively.

3. The rotatable high-flow oxygen therapy nasal cannula according to claim 2, characterized in that, The nasal cannula body includes: a first end body, a middle fixing part, and a second end body, wherein at least one of the first end body, the middle fixing part, and the second end body is fixedly connected to the fixing base. The rotatable nose plug is rotatably connected between the first end body and the intermediate fixing part via a pivot pin; the other rotatable nose plug is rotatably connected between the second end body and the intermediate fixing part via a pivot pin.

4. The rotatable high-flow oxygen therapy nasal cannula according to claim 3, characterized in that, Both the first end body and the second end body are connected to the oxygen supply hoses, and the two oxygen supply hoses are respectively connected to the two rotatable nasal plugs.

5. The rotatable high-flow oxygen therapy nasal cannula according to claim 3, characterized in that, The first ventilation cavity is disposed in the first end body and the second end body. The rotatable nasal plug body has at least one first eccentric hole at one end near the first end body or the second end body. The first eccentric hole is offset from the rotation axis of the rotatable nasal plug body. The first end body and the second end body have a second eccentric hole. The rotatable nasal plug has an open position and a closed position. When the rotatable nasal plug is rotated to the open position, the first eccentric hole and the second eccentric hole correspond to each other so that the first ventilation cavity and the second ventilation cavity are connected. When the rotatable nasal plug is rotated to the closed position, the first eccentric hole and the second eccentric hole are misaligned so that the first ventilation cavity and the second ventilation cavity are not connected.

6. The rotatable high-flow oxygen therapy nasal cannula according to claim 3, characterized in that, An eccentric groove is provided at one end of the rotatable nose plug that is attached to the middle fixing part. The eccentric groove is offset from the rotation axis of the rotatable nose plug. A helical elastic element and a snap-fit ​​ball are stacked on the eccentric groove in sequence. A snap-fit ​​groove is provided on the middle fixing part corresponding to the position of the snap-fit ​​ball. The snap-fit ​​ball and the snap-fit ​​groove snap-fit ​​each other.

7. The rotatable high-flow oxygen therapy nasal cannula according to claim 1, characterized in that, A handle is provided on the outer wall of the rotatable nose plug, and the handle is used to move the rotatable nose plug. The handle is integrally formed with the rotatable nose plug.

8. The rotatable high-flow oxygen therapy nasal cannula according to claim 1, characterized in that, At least one of the nasal cannula body and the rotatable nasal plug body has a foam dressing layer covering its outer surface.

9. The rotatable high-flow oxygen therapy nasal cannula according to claim 1, characterized in that, The fixing strap is connected to both ends of the fixing base, and buffer pads are respectively provided at both ends of the fixing base.

10. A rotatable high-flow oxygen therapy nasal cannula according to claim 1, characterized in that, The fixing strap is provided with a sponge, and the fixing strap passes through the inside of the sponge so that the sponge can slide on the fixing strap.

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