Oropharyngeal airway

Abstract

The invention discloses an oropharyngeal airway, and belongs to the technical field of medical instruments. Comprising a bite block and an air duct, the bite block is arranged at the end of the air duct in a sleeving mode, a protection ring is connected to the outer wall of the rear end of the bite block, and a compression plate is arranged in the protection ring and located on the side face of the air duct; an air bag is arranged on the rear side of the compression plate, and the side face of the compression plate is connected with a thread adjusting mechanism used for adjusting the opening size of the air duct. According to the oropharynx airway disclosed by the invention, through the inflatable silica gel tooth cushion and the inflatable supporting ring, accurate fitting and stable fixation of the oropharynx airway with teeth, gingiva and the inner wall in an oral cavity are realized, and displacement is effectively prevented; the thread adjusting mechanism can adjust the size of a ventilation opening through the meshing design of a gear and a rack, and discomfort of a patient due to long-time mouth opening is relieved; the wing ends of the wing plates on the two sides are driven by the threaded rod to rotate to a certain degree, so that the side wings are better attached to the facial contour of a patient, and the stability of the air duct in the oral cavity is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an oropharyngeal airway. Background Art

[0002] In first aid, surgical anesthesia, and intensive care, maintaining the patency of the patient's airway is crucial for ensuring respiratory function. As an auxiliary device, the oropharyngeal airway can prevent airway obstruction caused by the posterior displacement of the tongue and ensure the oxygen supply and smooth breathing of the patient. Traditional oropharyngeal airways are usually made of plastic or rubber with a fixed shape and are difficult to fit perfectly in the patient's oral cavity. For example, when the patient turns over, swallows, or the head position changes, the airway is likely to shift. This may cause partial or complete blockage of the airway, affecting normal ventilation, especially in the case of long-term use of the airway, this risk will increase significantly. For elderly patients or patients with abnormal oral structures, such as tooth loss, looseness, irregular arrangement, etc., traditional airways cannot be effectively fixed. They cannot be adjusted according to the actual shape of the teeth and tissues in the oral cavity and are difficult to provide stable support, thus reducing the safety and effectiveness of ventilation.

[0003] The invention patent with the publication number CN112263759A discloses an oropharyngeal airway, including: a flange, a bite block, an intra-palatal fixator, and a pharyngeal bend; this device can be harmlessly fixed at the mouth and pharynx of a person; it changes the deficiency of the traditional single-flange oropharyngeal airway that requires external fixation and avoids the defect of using a general adhesive fixing band to fix the oropharyngeal airway in the traditional way, so that the adhesive fixing band will not loosen during long-term winding, and the patient will not have discomfort such as allergies. That is, it brings better nursing effects to the patient, simplifies the clinical operation steps at the same time, avoids the complex clinical operations brought by fixing the oropharyngeal airway, and improves the work efficiency of medical staff. However, the device still has the following problems when in use: the channel does not have the function of adjustable opening. When the patient uses the traditional airway, the oral cavity needs to be kept open wide for a long time, which will make the patient feel fatigued and muscle soreness. This discomfort may cause the patient to resist using the airway and affect the smooth progress of the treatment. Summary of the Invention

[0004] Aiming at the above existing problems, the present invention aims to provide an oropharyngeal airway. Through the inflatable silicone bite block and the inflatable support ring, it can achieve precise fitting and stable fixation with the teeth, gums, and inner wall of the oral cavity, effectively preventing displacement; the threaded adjustment mechanism can adjust the size of the ventilation opening through the meshing design of the gear and the rack, alleviating the discomfort of the patient's long-term opening of the mouth; the wing plates on both sides are driven by the threaded rod, and the wing tips rotate to a certain extent, making the side wings more conform to the facial contour of the patient.

[0005] In order to achieve the above object, the technical solutions adopted by the present invention are as follows: An oropharyngeal airway includes a dental pad and an airway. The dental pad is sleeved at the end of the airway. A protective ring is connected to the outer wall of the rear end of the dental pad. A compression plate is movably arranged inside the protective ring, and the compression plate is located on the side of the airway. A balloon is arranged at the rear side of the compression plate, and a threaded adjustment mechanism for adjusting the opening size of the airway is connected to the side of the compression plate.

[0006] Furthermore, fixing plates are arranged on both the top surface and the bottom surface of the airway. The threaded adjustment mechanism is connected to the two fixing plates for adjusting the relative distance between the two fixing plates.

[0007] Furthermore, the threaded adjustment mechanism includes a threaded rod, a limiting block, a first rack and a second rack. The limiting block is connected to the compression plate. The threaded rod is rotatably connected to the protective ring and threadedly penetrates through the limiting block. A gear is connected to the front end of the threaded rod. The gear meshes with the first rack and the second rack. The first rack and the second rack are respectively connected to the two fixing plates correspondingly.

[0008] Furthermore, an inflatable support ring is also sleeved outside the airway, and the inflatable support ring is located at the front end of the dental pad.

[0009] Furthermore, a first inflatable tube, a third inflatable tube and a fourth inflatable tube are connected to the protective ring. The first inflatable tube is connected to the fourth inflatable tube. The side wall of the fourth inflatable tube is communicated with the third inflatable tube. The third inflatable tube is communicated with the balloon. The fourth inflatable tube penetrates through the balloon and the compression plate and then is communicated with the dental pad.

[0010] Furthermore, a second inflatable tube is connected to the protective ring. The second inflatable tube penetrates through the protective ring and the dental pad and then is communicated with the inflatable support ring.

[0011] Furthermore, valves are arranged on both the first inflatable tube and the second inflatable tube.

[0012] Furthermore, a frame is also connected to the compression plate. The frame penetrates through the protective ring. Wing plates are arranged on both sides of the protective ring. One of the wing plates is movably connected to the compression plate through a support rod, and the other wing plate is movably connected to the frame.

[0013] The beneficial effects of the present invention are: 1. The oropharyngeal airway of the present invention realizes precise fitting and stable fixation with the teeth, gums and inner wall of the oral cavity through an inflatable silicone dental pad and an inflatable support ring, effectively preventing displacement; the threaded adjustment mechanism can adjust the size of the ventilation opening through the meshing design of gears and racks, alleviating the discomfort of the patient's long-term open mouth; the wing plates on both sides are driven by the threaded rod, and the wing tips rotate to a certain extent, making the side wings fit the patient's facial contour more closely, improving the stability of the airway in the oral cavity and the comfort of wearing.

[0014] 2. The oropharyngeal airway of the present invention can be inflated and expanded through the inflatable silicone dental pad and the inflatable support ring, tightly fitting the teeth, gums and inner wall of the oral cavity, effectively preventing the airway from shifting in the oral cavity. After inflation, the dental pad can adaptively fill the toothless gaps according to the actual distribution of teeth, increasing the contact area with the surrounding tissues and forming a stable support; after inflation, the inflatable support ring can tightly fit the irregular shape of the inner wall of the oral cavity, providing a reliable secondary fixation function, ensuring that the airway can maintain a stable position during various body position changes and oral activities (such as swallowing, coughing, etc.) of the patient, ensuring the continuous patency of the airway, and reducing the risks of poor ventilation or airway obstruction caused by airway displacement.

[0015] 3. The threaded adjustment mechanism of the present invention can dynamically adjust the size of the opening through the meshing of gears and racks (the first rack and the second rack), improving the comfort of the patient. When the patient only needs ventilation support, medical staff can rotate the knob to move the fixed plate inward, reducing the degree of opening of the oral cavity, effectively alleviating the muscle fatigue and soreness caused by the patient's long-term open mouth, making the patient more relaxed and comfortable during ventilation, improving the patient's tolerance and compliance with the airway, and being beneficial to long-term treatment and care.

[0016] 4. The shape of the wing plate conforms to the curve characteristics of the human face. Its wing tip is connected to the compression plate. When the threaded rod rotates, the limit block will move axially, driving the compression plate to move. The compression plate squeezes the airbag, making the dental pad maintain an inflated state, better filling the gaps of tooth defects, and at the same time being able to drive the wing tip of the wing plate to rotate to a certain extent, making the side wings fit the patient's facial contour more closely, improving the stability of the airway in the oral cavity and the comfort of wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the oropharyngeal airway in the present invention.

[0018] Figure 2 is a schematic internal structure diagram of the oropharyngeal airway in the front view state of the present invention.

[0019] Figure 3 is for the present invention Figure 2 partial enlarged view of A.

[0020] Figure 4 This is a schematic diagram of the internal structure of the oropharyngeal airway in the rear view state of the present invention.

[0021] Figure 5 For the present invention Figure 4 A partial enlarged view of B in the present invention.

[0022] Figure 6 This is the front view of the oropharyngeal airway in the present invention.

[0023] Figure 7 This is a cross-sectional view of the first inflatable tube, protective ring, dental pad and inflatable support ring in the present invention.

[0024] Figure 8 This is a cross-sectional view of the second inflatable tube, protective ring, dental pad and inflatable support ring in the present invention.

[0025] Figure 9 This is a cross-sectional view of the dental pad, fixing plate and airway in the present invention.

[0026] Wherein: 1, dental pad; 2, airway; 3, protective ring; 4, screw adjustment mechanism; 5, inflatable support ring; 6, first inflatable tube; 7, second inflatable tube; 8, valve; 9, wing plate; 31, airbag; 32, frame; 33, compression plate; 41, threaded rod; 42, limit block; 43, first rack; 44, second rack; 45, gear; 46, fixing plate; 47, knob; 61, third inflatable tube; 62, fourth inflatable tube; 91, support rod; 92, movable groove. Detailed implementation manners

[0027] In order to enable those of ordinary skill in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below with reference to the drawings and embodiments.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "front end", "rear end", "inner side", "outer side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] In the description of the present application, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] Referring to the attached Figures 1-9 An oropharyngeal airway shown, which includes a bite block 1 and an airway 2. The bite block 1 is sleeved on the end of the airway 2. A protective ring 3 is connected to the outer wall of the rear end of the bite block 1. A compression plate 33 is movably arranged inside the protective ring 3. The compression plate 33 is located on the side of the airway 2. A balloon 31 is arranged at the rear side of the compression plate 33, and a threaded adjustment mechanism 4 for adjusting the opening size of the airway 2 is connected to the side of the compression plate 33.

[0031] Specifically, the protective ring 3 provides the basic fixing function of the overall structure. The setting of the protective ring 3 provides support for the threaded adjustment mechanism 4 to adjust the opening size, realizing the dynamic adjustment of the opening of the airway 2. The setting of the threaded adjustment mechanism 4 improves the adaptability of the device, and can adjust the opening size of the airway 2 according to the oral structure of the patient and the actual needs to achieve a personalized treatment effect. It should be noted that the bite block 1 is made of inflatable silicone material and has an independent balloon 31 structure. The airway 2 is made of a medical-grade soft and somewhat flexible plastic material, and the inner wall of its lumen is smooth to ensure smooth gas flow. The overall shape is designed according to the physiological structure of the human oral cavity and throat, with an appropriate curvature for easy insertion and placement.

[0032] Fixing plates 46 are arranged on both the top surface and the bottom surface of the airway 2. The threaded adjustment mechanism 4 is connected to the two fixing plates 46 for adjusting the relative distance between the two fixing plates 46.

[0033] The screw adjustment mechanism 4 includes a screw rod 41, a limit block 42, a first rack 43 and a second rack 44; the limit block 42 is fixedly connected to the compression plate 33, the screw rod 41 is rotatably connected to the protection ring 3 and threadedly penetrates the limit block 42. It should be noted here that the connection between the screw rod 41 and the protection ring 3 is of a common cylindrical structure, and only rotation can occur between the screw rod 41 and the protection ring 3, and no axial movement will occur. The front end of the screw rod 41 is connected to a gear 45, the other end of the screw rod 41 is fixedly connected to a knob 47, the knob 47 is located outside the protection ring 3, and the gear 45 meshes with the first rack 43 and the second rack 44; the first rack 43 and the second rack 44 are arranged oppositely, and the first rack 43 and the second rack 44 are respectively connected to two corresponding fixed plates 46. By rotating the knob 47, the screw rod 41 rotates, driving the gear 45 to mesh with the first rack 43 and the second rack 44. The rear ends of the first rack 43 and the second rack 44 are both connected to the fixed plates 46 fixedly connected to the air passage 2. Therefore, when it is necessary to reduce the opening, when the knob 47 is rotated, the first rack 43 moves downward and the second rack 44 moves upward, pulling the corresponding fixed plates 46; since the air passage 2 is made of flexible plastic material and has a certain elasticity, driven by the fixed plates 46, the opening size of the dental pad 1 becomes smaller as the fixed plates 46 move. At the same time, the rotation of the screw rod 41 drives the limit block 42 engaged with it to move in the front-rear direction, and the movement of the limit block 42 drives the compression plate 33 to move, thereby squeezing the airbag 31, so that the dental pad 1 maintains an inflated state and better fills the gap of the tooth defect.

[0034] An inflatable support ring 5 is also sleeved outside the air passage 2, and the inflatable support ring 5 is located at the front end of the dental pad 1. It should be noted that the inflatable support ring 5 is made of inflatable silicone material and is independently designed from other inflatable structures. After inflation, the inflatable support ring 5 can closely fit the inner wall of the oral cavity, adaptively adjust according to the curvature and shape of the inner wall of the oral cavity, provide a reliable secondary fixing effect, ensure the stability of the air passage 2 in the oral cavity, especially when the patient's oral cavity moves, such as swallowing, coughing, etc., it can effectively prevent the loosening and displacement of the air passage 2, and at the same time play a certain protective role on the inner wall of the oral cavity, avoiding damage caused by friction and compression of the air passage 2.

[0035] The protective ring 3 is provided with a first air inlet pipe 6, a second air inlet pipe 7, a third air inlet pipe 61 and a fourth air inlet pipe 62; the first air inlet pipe 6 is connected to the fourth air inlet pipe 62, the side wall of the fourth air inlet pipe 62 is communicated with the third air inlet pipe 61, the second air inlet pipe 7 penetrates through the protective ring 3 and the dental pad 1, and the second air inlet pipe 7 is communicated with the inflatable support ring 5; the third air inlet pipe 61 is communicated with the airbag 31, and the fourth air inlet pipe 62 penetrates through the airbag 31 and the compression plate 33 and then is communicated with the dental pad 1. It should be noted that the dental pad 1 and the airbag 31 are communicated through the third air inlet pipe 61 and the fourth air inlet pipe 62. When the threaded rod 41 rotates, the limit block 42 will move axially, driving the compression plate 33 to move. The compression plate squeezes the airbag 31, so that the dental pad 1 maintains an inflated state, better filling the gap of tooth defect, and further enhancing the fixing effect and sealing performance of the airway 2. Multiple air inlet pipes are arranged in the protective ring 3. The first air inlet pipe 6 is connected to the airbag 31 and the dental pad 1 through the third and fourth air inlet pipes 62 respectively, ensuring that the airbag 31 and the dental pad 1 can be inflated to adjust their shapes. The second air inlet pipe 7 penetrates through the protective ring 3 and the dental pad 1 and is connected to the inflatable support ring 5, realizing independent adjustment of the support for the inner wall of the oral cavity and ensuring the adaptability and comfort of different patients. The inflation of the airbag 31 provides fitting and support for the front part of the oral cavity, while the inflation of the dental pad 1 fills the toothless gap in the oral cavity, increasing the support area and improving the stability and comfort.

[0036] Valves 8 are provided on both the first air inlet pipe 6 and the second air inlet pipe 7. The valve 8 is provided with a ventilation hole. When the valve 8 is rotated, the ventilation hole is blocked and ventilation cannot be carried out. The design of the valve 8 can accurately control each air inlet pipe, adjust the inflation volume of different components, adapt to individual differences of patients and treatment requirements, and at the same time avoid damage or discomfort caused by over-inflation.

[0037] A frame 32 is arranged in the protective ring 3. The frame 32 is sleeved outside the airway 2. Wing plates 9 are movably arranged on both sides of the frame 32; a support rod 91 is arranged on each wing plate 9, and the support rod 91 is movably connected to the compression plate 33. An activity groove 92 for restricting the movement of the wing plate 9 is installed on the protective ring 3. The wing plates 9 on both sides of the frame 32 are connected to the compression plate 33 through the support rods 91. When the threaded rod 41 rotates, the limit block 42 will move axially, driving the compression plate 33 to move, thereby driving the wing tips of the wing plates 9 to rotate to a certain extent, making the side wings more conform to the facial contour of the patient. Under the restriction of the activity groove 92, the wing plates 9 will not fold in the reverse direction and can provide an additional external support function.

[0038] In this embodiment, the working principle of the oropharyngeal airway is as follows: First, place the oropharyngeal airway into the patient's mouth and ensure that the airway is in a proper position, with the wing plate 9 providing external support. Then, inflate the dental pad 1, the airbag 31, and the inflatable support ring 5 through the first inflatable tube 6 and the second inflatable tube 7, so that the dental pad 1 closely fits the patient's teeth and gums, filling the toothless gap. When inflated to the appropriate size, the valve 8 can be closed to stop inflation. If overinflated or for other deflation needs, the valve 8 can also be opened to deflate to the appropriate size and then closed. The wing plate 9 automatically adjusts according to the patient's facial contour, fitting the facial skin and providing additional external support.

[0039] When only ventilation is required, by rotating the knob 47, the threaded rod 41 rotates, driving the gear 45 to engage with the first rack 43 and the second rack 44, and then driving the fixed plate 46 to move inward, which can reduce the degree of mouth opening and relieve the fatigue of the patient's long-term open mouth. When intubation or other operations are needed, rotate the knob 47 in the opposite direction to adjust the fixed plate 46 outward, increasing the opening and providing sufficient operating space for medical staff.

[0040] Specific application cases: When a patient needs to use an auxiliary airway, the specific application method of an oropharyngeal airway of this application is as follows: First, place the oropharyngeal airway into the patient's mouth and ensure that the airway 2 is in a proper position; the wing plate 9 provides external support to ensure that the airway 2 is fixed stably and the patient wears it comfortably. Then, inflate the dental pad 1, the airbag 31, and the inflatable support ring 5 through the first inflatable tube 6 and the second inflatable tube 7, so that the dental pad 1 closely fits the patient's teeth and gums, filling the toothless gap, the airbag 31 fits the anterior oral structure, and the inflatable support ring 5 adaptively adjusts according to the shape of the oral inner wall to form stable multi-point support. When inflated to the appropriate size, the valve 8 can be closed to stop inflation. If overinflated or for other deflation needs, the valve 8 can also be opened to deflate to the appropriate size and then closed.

[0041] When only ventilation is required, by rotating the knob 47, the threaded rod 41 rotates, driving the gear 45 to engage with the first rack 43 and the second rack 44. The rear ends of the first rack 43 and the second rack 44 are both connected to the fixed plate 46 fixedly connected to the airway 2, so the two fixed plates 46 will be driven to move inward, reducing the degree of mouth opening and relieving the fatigue of the patient's long-term open mouth. When the fixed plate 46 is adjusted inward, the threaded rod 41 cooperates with the nut opening of the compression plate 33, compressing the airbag 31 connected to the dental pad 1 to keep the dental pad 1 in an inflated state, better filling the gap of tooth defects, further enhancing the fixing effect and sealing performance of the airway 2, and ensuring the patency of the airway. When intubation or other operations are needed, rotate the knob 47 in the opposite direction to adjust the fixed plate 46 outward, increasing the opening and providing sufficient operating space for medical staff.

[0042] After use, open valve 8 to release the gas, and then take out the oropharyngeal airway.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. An oropharyngeal airway, comprising a tooth pad (1) and an airway (2), wherein the tooth pad (1) is sleeved on an end of the airway (2), and characterized in that: The outer wall of the rear end of the tooth pad (1) is connected to a protective ring (3), a compression plate (33) is movably provided inside the protective ring (3), and the compression plate (33) is located on the side of the airway (2); An air bag (31) is provided on the rear side of the compression plate (33), and a threaded adjustment mechanism (4) for adjusting the opening size of the airway (2) is connected to the side of the compression plate (33).

2. An oropharyngeal airway according to claim 1, characterized in that: The top surface and the bottom surface of the air passage (2) are both provided with fixing plates (46), and the threaded adjustment mechanism (4) is connected to the two fixing plates (46) and is used to adjust the relative distance between the two fixing plates (46).

3. An oropharyngeal airway according to claim 2, characterized in that: The threaded adjustment mechanism comprises a threaded rod (41), a limit block (42), a first rack (43) and a second rack (44); The limit block (42) is connected to the compression plate (33), the threaded rod (41) is rotatably connected to the protection ring (3), and the thread passes through the limit block (42); A gear (45) is connected to the front end of the threaded rod (41); the gear (45) is meshed with the first rack (43) and the second rack (44); the first rack (43) and the second rack (44) are respectively connected to two fixing plates (46).

4. An oropharyngeal airway according to claim 1, characterized in that: The air passage (2) is also sleeved with an inflatable support ring (5), and the inflatable support ring (5) is located at the front end of the tooth pad (1).

5. An oropharyngeal airway according to claim 4, characterized in that: The protection ring (3) is connected to a first inflation tube (6), a third inflation tube (61) and a fourth inflation tube (62); The first inflation tube (6) is connected to the fourth inflation tube (62), and the side wall of the fourth inflation tube (62) is in communication with the third inflation tube (61); the third inflation tube (61) is in communication with the air bag (31), and the fourth inflation tube (62) passes through the air bag (31) and the compression plate (33) and is in communication with the bite pad (1).

6. An oropharyngeal airway according to claim 5, characterized in that: The protective ring (3) is connected to a second inflation tube (7); The second inflation tube (7) passes through the protection ring (3) and the tooth pad (1) and is then connected to the inflation support ring (5).

7. An oropharyngeal airway according to claim 6, characterized in that: The first inflation tube (6) and the second inflation tube (7) are both provided with valves (8).

8. An oropharyngeal airway according to claim 1, characterized in that: The compression plate (33) is also connected to a frame (32), and the frame (32) passes through the protective ring (3). Wing plates (9) are provided on both sides of the protection ring (3), one of the wing plates (9) is movably connected to the compression plate (33) via a support rod (91), and the other wing plate (9) is movably connected to the frame (32).

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