Nasopharynx ventilation catheter

Abstract

The utility model relates to the field of medical instruments, in particular to a nasopharynx ventilation catheter. Comprising a first tube, a second tube, a head-mounted strap and an adapter, one end of the first tube is connected with a first port of the adapter, the other end of the first tube is connected with a breathing machine through a connector, a second port of the adapter is connected with the second tube, the second tube is used for being inserted into the nasopharynx of a patient, and the head-mounted strap is fixed to the adapter; the problems that a nasopharyngeal ventilation catheter is prone to falling off, and when the nasopharyngeal ventilation catheter is connected with breathing machines of different models in a matched mode, connection distances are different, and connection positions and orientations are different, so that connection with the nasopharyngeal ventilation catheter is unstable are solved. The connection stability of the contact between the second tube and a patient is improved through the head-mounted bridle, and the stable connection between the first tube and the second tube is realized through the adapter, so that when the first tube is connected with breathing machines of different models, the effect that the connection stability of the second tube can be maintained even when the connection distances are different and the connection positions are different is realized.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, and more specifically, to a nasopharyngeal ventilation catheter. Background Art

[0002] The nasopharyngeal ventilation catheter, also known as a simple artificial airway, refers to a simple and quick ventilation device that is inserted into the nasal cavity through the nose to keep the airway open. It can relieve the obstruction of the upper respiratory tract in the nasopharynx, reduce airflow resistance, facilitate the attraction of upper respiratory tract secretions, and improve the patient's oxygenation. The operation technique should be gentle during tube placement to avoid damaging the mucosa or surrounding glandular tissue. If the nasopharyngeal ventilation tube is too long, it may be inserted into the esophagus, which may cause bloating and insufficient ventilation during positive pressure ventilation. If the patient has facial trauma, be alert to the nasopharyngeal ventilation tube entering the cranial cavity through the fractured cribriform plate, causing intracranial injury. The use of the nasopharyngeal ventilation tube may cause irritant laryngeal spasm or reflex vomiting, so care should be taken.

[0003] The existing nasopharyngeal ventilation catheter has one end that is inserted into the nasal cavity, and the tube body exposed outside the nasal cavity is directly fixed to the patient's face with tape, which is easy to fall off when the patient turns his head. The other end is connected to the pipeline of the ventilator. Since the nasopharyngeal ventilation catheter has been inserted into the nasal cavity, its angle and length cannot be changed. Therefore, the connection distance, connection position and connection angle between the pipeline of the ventilator and the nasopharyngeal ventilation catheter will be different due to the change of the model of the ventilator, making it impossible to match the nasopharyngeal ventilation catheter.

[0004] How to solve the problem of the stability of the connection of the nasopharyngeal ventilation tube, and the problem of unstable connection with the nasopharyngeal ventilation tube due to different connection distances and connection positions when adapting and connecting with different models of ventilators, is an urgent problem to be solved in this field. Utility Model Content

[0005] The utility model aims to overcome at least the defects (deficiencies) of the above-mentioned prior art and provide a nasopharyngeal ventilation catheter, which is used to solve the problem that the nasopharyngeal ventilation catheter is easy to fall off due to the patient turning his head, and the connection with the nasopharyngeal ventilation catheter is unstable due to different connection distances and different connection positions when it is adapted and connected to ventilators of different models.

[0006] The technical solution adopted by the utility model is a nasopharyngeal ventilation catheter, which includes a first tube, a second tube, a headband, and an adapter. One end of the first tube is connected to a first port of the adapter, the other end of the first tube is connected to a ventilator through an interface, the second port of the adapter is connected to the second tube, the second tube is used to be inserted into the patient's nasopharynx, and the headband is fixed on the adapter.

[0007] It is beneficial to connect the first tube to the ventilator, insert the second tube into the patient's nasopharynx, achieve a stable connection between the first tube and the second tube through the adapter, and improve the connection stability between the second tube and the patient through the head strap.

[0008] Furthermore, radial directions of the first port and the second port are perpendicular to each other.

[0009] It is beneficial to change the radial direction of the second tube in front of the patient's nasal cavity to the radial direction of the first tube on the side of the patient by making the radial directions of the first port and the second port perpendicular to each other, thereby facilitating medical staff to observe, operate and use other machines and avoiding collision with the second tube to cause intracranial trauma to the patient.

[0010] Furthermore, the headband includes a sleeve sleeved on the outside of the first port, and the side wall of the sleeve is provided with an opening for the extension of the second port.

[0011] It is beneficial to use the sleeve as a supporting component for the headband, and the second port is extended through the opening provided on the side wall of the sleeve, thereby once again strengthening the connection stability between the sleeve and the adapter.

[0012] Furthermore, the adapter is a two-way elbow, the second port is a curved pipe, the first port of the adapter is fixedly connected to the first pipe, and / or the second port is movably connected to the second pipe.

[0013] It is beneficial to change the angle between the first tube and the second tube through the two-way elbow, make the curvature of the second port consistent with the curvature of the second tube through the elbow, strengthen the air tightness of the connection between the two, strengthen the connection stability of the first tube and the adapter through the fixed connection between the first port and the first tube, and make the second tube replaceable through the movable connection between the second port and the second tube.

[0014] Furthermore, the diameter of the first port is greater than the diameter of the second port.

[0015] The diameter of the second port is advantageously smaller than the diameter of the first port, so that when the gas in the first tube connected to the first port flows into the second tube connected to the second port, the resistance of the adapter as an elbow is reduced, so that the gas flow maintains a uniform speed.

[0016] Further, a sealing ring is provided between the first port and the first tube, and / or a sealing ring is provided between the second port and the second tube.

[0017] This is beneficial for strengthening the connection stability between the first port and the first tube and strengthening the connection stability between the second port and the second tube through the sealing ring.

[0018] Furthermore, the bending length of the curved pipe is 18-22 mm, the diameter of the curved pipe is 2-8 mm, and the wall thickness of the curved pipe is 0.8-1.2 mm.

[0019] This is beneficial for accurately matching the curvature of the second tube through a specific bending value range of the bent tube, thereby improving the air tightness of the connection between the second port of the adapter and the second tube.

[0020] Furthermore, the second tube includes a connecting end and an inserting end, the connecting end is connected to the adapter and has a flat end, and the inserting end contacts the patient's nasopharynx and has an oblique end.

[0021] The flat connection end facilitates the plugging and unplugging of the second tube and the second port, and the oblique insertion end facilitates the comfort of the second tube in contact with the patient's nasal cavity.

[0022] Furthermore, the interface includes an adapter joint for connecting to an external ventilator, and the adapter joint also includes a fixing belt for fixing the first tube and the medical instrument.

[0023] It is helpful to connect different types of ventilators through the adapter, and the first tube, the adapter and the ventilator are fixed by the fixing belt to avoid falling off.

[0024] Furthermore, the angle and length of the first tube are adjustable.

[0025] It is advantageous that the angle and length of the first flexible tube can be adjusted to adapt to the changes in the distance and position direction between the second tube and the ventilator, thereby preventing the nasopharyngeal ventilation catheter from falling off during use.

[0026] Compared with the prior art, the beneficial effects of the utility model are: the connection stability between the second tube and the patient is improved by the headband connected to the adapter, and a stable connection between the first tube and the second tube is achieved through the adapter, so that when the first tube is connected to ventilators of different models, the connection stability of the second tube can be maintained at different connection distances and connection positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a schematic diagram of the adapter of the utility model.

[0029] Description of the symbols in the accompanying drawings: first tube 100, second tube 200, headband 300, adapter 400, first port 410, second port 420, adapter 500, fixing strap 600. DETAILED DESCRIPTION

[0030] The drawings of the present invention are only used for illustrative purposes and cannot be construed as limiting the present invention. In order to better illustrate the following embodiments, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0031] Example

[0032] like Figure 1-2 As shown, this embodiment provides a nasopharyngeal ventilation catheter, which includes a first tube 100, a second tube 200, a headband 300, and an adapter 400. One end of the first tube 100 is connected to a first port 410 of the adapter 400, and the other end of the first tube 100 is connected to a ventilator through an interface. The second port 420 of the adapter 400 is connected to the second tube 200. The second tube 200 is used to be inserted into the patient's nasopharynx, and the headband 300 is fixed on the adapter 400.

[0033] In this embodiment, the first tube 100 is a gas corrugated hose connected to the ventilator, which is made of medical plastic or silicone; the second tube 200 is a common disposable medical consumable nasopharyngeal airway removal disc, which is made of medical plastic or silicone; the headband 300 is an elastic band with an adjustment buckle, which is adjusted and adapted according to the distance from the nasal cavity to the back of the head of different patients. When worn, it is wrapped around the patient's cheeks to the back of the head, so as to prevent the second tube 200 from falling off the patient; the headband An elastic ring is also provided on the strap 300 for fixing the first tube 100 to the head strap 300. The elastic band can slide up and down on the outer wall of the first tube 100 to adjust the fixing point between the first tube 100 and the head strap 300. The adapter 400 is used to simultaneously connect the first tube 100 and the second tube 200, and is made of medical hard plastic. The first port 410 of the adapter 400 is connected to the first tube 100, and the second port 420 of the adapter 400 is connected to the second tube 200.

[0034] The radial directions of the first port 410 and the second port 420 are perpendicular to each other.

[0035] In this embodiment, when the patient lies flat on his back facing upward, the diameter direction of the second tube 200 is also facing upward, and the ventilator is placed on the side of the patient. In order to facilitate the ventilator to supply air to the second tube 200, the radial directions of the first port 410 and the second port 420 of the adapter 400 are perpendicular to each other to achieve the conversion of the gas in the ventilator from the diameter direction of the first tube 100 to the diameter direction of the second tube 200, thereby avoiding unstable connection of the ventilator, while ensuring smooth gas circulation and stable air supply from the ventilator.

[0036] The headband 300 includes a sleeve sleeved on the outside of the first port 410 , and a side wall of the sleeve is provided with an opening for the extension of the second port 420 .

[0037] In this embodiment, the first tube 100 is a corrugated hose and cannot provide support for the headband 300. The hard sleeve on the headband 300 provides a fulcrum for the headband 300, so that after the second tube 200 is inserted into the patient's nasal cavity, the headband 300 can be worn with the sleeve as a fulcrum to achieve adjustable tightness. The opening provided on the side wall of the sleeve allows the second port 420 to extend, thereby enhancing the connection stability between the adapter 400 and the sleeve. When the headband 300 is worn, the connection between the adapter 400 and the first tube 100 and the second tube 200 will not fall off easily.

[0038] The adapter 400 is a two-way elbow, the second port 420 is a curved pipe, the first port 410 of the adapter 400 is fixedly connected to the first pipe 100 , and / or the second port 420 is movably connected to the second pipe 200 .

[0039] In this embodiment, the adapter 400 is a two-way elbow, and the angle between the radial direction of the first port 410 and the radial direction of the second port 420 is greater than or equal to 90°. Elbows with different angles can be adapted to ventilators with different distances from the patient; the second port 420 is a curved pipe, and the degree of curvature of the curved pipe is the same as that of the second tube 200. The curvature of the curved pipe is to enhance the airtightness between it and the second tube 200, and the curvature of the second tube 200 is to fit the human nasal cavity. The first port 410 of the adapter 400 is fixedly connected to the first tube 100 to ensure the continuity and stability of the air supply, and the second port 420 is movably connected to the second tube 200 to facilitate the rapid removal of the second tube 200 from the second port 420 to disconnect the air supply. At the same time, there is no need to remove the second tube 200 from the patient's nasal cavity, so as to avoid repeated insertion and removal of the second tube 200 to cause discomfort to the patient.

[0040] The diameter of the first port 410 is greater than the diameter of the second port 420 .

[0041] In this embodiment, the adapter 400 acts as an elbow, which forms a large resistance during the gas circulation process. In order to ensure the continuity and stability of the gas supply process, it is necessary to increase the gas flow rate at the adapter 400 to overcome the elbow resistance. When the diameter of the second port 420 is smaller than the diameter of the first port 410, the flow rate of the gas from the first tube 100 to the second tube 200 is increased.

[0042] A sealing ring is provided between the first port 410 and the first tube 100 , and / or a sealing ring is provided between the second port 420 and the second tube 200 .

[0043] In this embodiment, the sealing ring between the first port 410 and the first tube 100 is used to enhance the air tightness of the connection between the two, and the sealing ring between the second port 420 and the second tube 200 is used to enhance the air tightness of the connection between the two. The sealing ring is made of medical corrosion-resistant material.

[0044] The bending length of the bent pipe is 18-22 mm, the diameter of the bent pipe is 2-8 mm, and the wall thickness of the bent pipe is 0.8-1.2 mm.

[0045] In this embodiment, the bending length of the bent pipe is 20 mm, the nominal diameter of the bent pipe is 6 mm, and the wall thickness of the bent pipe is 1 mm.

[0046] The second tube 200 includes a connecting end and an inserting end. The connecting end is connected to the adapter 400 and has a flat end, and the inserting end contacts the nasopharynx of the patient and has an oblique end.

[0047] In this embodiment, the connecting end of the second tube 200 is connected to the second port 420 of the adapter 400, and the flat-mouthed connecting end is easy to plug and unplug; the insertion end is the same as the existing nasopharyngeal airway, and the oblique mouth is easy to insert into the nasal cavity.

[0048] The interface includes an adapter 500 for connecting to an external ventilator. The adapter 500 also includes a fixing belt 600 for fixing the first tube 100 and the medical instrument.

[0049] In this embodiment, the adapter joint 500 is used for an external ventilator or other machine. The side wall of the adapter joint 500 is provided with a through hole. The fixing belt 600 is passed through the through hole to form two belt loops. The fixing belt 600 slides in the through hole to change the size of the two belt loops. One of the belt loops is also provided with a buckle that can adjust the size of the belt loop with one hand, and the other belt loop is provided with a clamping piece that requires two hands to operate.

[0050] The angle and length of the first tube 100 are adjustable.

[0051] In this embodiment, the first tube 100 is a corrugated hose, and its length and angle can be adjusted arbitrarily, so that when the distance and position direction between the ventilator and the second tube 200 change, the stable connection with the second tube 200 can be maintained, so that the air supply of the first tube 100 is stable and continuous.

[0052] Obviously, the above embodiments of the utility model are only examples for clearly explaining the technical solution of the utility model, and are not intended to limit the specific implementation methods of the utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the claims of the utility model shall be included in the protection scope of the claims of the utility model.

Claims

1. A nasopharyngeal ventilation catheter, characterized in that: It includes a first tube, a second tube, a headband, and an adapter. One end of the first tube is connected to a first port of the adapter, the other end of the first tube is connected to a ventilator through an interface, the second port of the adapter is connected to the second tube, the second tube is used to be inserted into the patient's nasopharynx, and the headband is fixed to the adapter.

2. The nasopharyngeal ventilation catheter according to claim 1, characterized in that: The radial directions of the first port and the second port are perpendicular to each other.

3. The nasopharyngeal ventilation catheter according to claim 1, characterized in that: The headband comprises a sleeve sleeved on the outside of the first port, and a side wall of the sleeve is provided with an opening for the extension of the second port.

4. The nasopharyngeal ventilation catheter according to claim 1, characterized in that: The adapter is a two-way elbow, the second port is a curved pipe, the first port of the adapter is fixedly connected to the first pipe, and / or the second port is movably connected to the second pipe.

5. The nasopharyngeal ventilation catheter according to claim 1, characterized in that: The diameter of the first port is greater than the diameter of the second port.

6. The nasopharyngeal ventilation catheter according to any one of claims 1 to 5, characterized in that: A sealing ring is provided between the first port and the first tube, and / or a sealing ring is provided between the second port and the second tube.

7. The nasopharyngeal ventilation catheter according to claim 4, characterized in that: The bending length of the bent pipe is 18-22 mm, the diameter of the bent pipe is 2-8 mm, and the wall thickness of the bent pipe is 0.8-1.2 mm.

8. The nasopharyngeal ventilation catheter according to claim 1, characterized in that: The second tube includes a connecting end and an inserting end. The connecting end is connected to the adapter and has a flat end, and the inserting end contacts the patient's nasopharynx and has an oblique end.

9. The nasopharyngeal ventilation catheter according to claim 1, characterized in that: The interface includes an adapter joint for connecting to an external ventilator, and the adapter joint also includes a fixing belt for fixing the first tube and the medical instrument.

10. The nasopharyngeal ventilation catheter according to claim 6, characterized in that: The angle and length of the first tube are adjustable.

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