Adjustable neck collar for preventing intravenous anesthesia airway obstruction

Abstract

The invention relates to the technical field of neck collar equipment, in particular to an adjustable neck collar for preventing intravenous anesthesia airway obstruction. Comprising a first neck bracket and a second neck bracket, hook-and-loop fasteners which are symmetrically distributed are jointly arranged between the first neck bracket and the second neck bracket, a fixing frame is fixedly connected to the side, away from the second neck bracket, of the first neck bracket, and an adjusting frame is slidably connected to the fixing frame; transmission air bags distributed in a linear array mode are fixedly connected between the fixing frame and the adjusting frame, every two adjacent transmission air bags are communicated with each other, an extrusion frame is hinged to the adjusting frame, and a torsional spring is fixedly connected between the adjusting frame and the extrusion frame. The transmission air bag expands to push the extrusion frame to move and rotate, so that the extrusion frame adapts to the length of the neck of a patient while pushing the lower jaw of the patient to move upwards, it is ensured that the tongue root of the patient can be driven to move upwards while the lower jaw of the patient is lifted, and therefore the airway of the patient is kept smooth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cervical collar devices, and particularly relates to an adjustable cervical collar for preventing airway obstruction during intravenous anesthesia. BACKGROUND

[0002] Cervical collars are commonly used for the maintenance of patients with cervical spondylosis and the support of patients' necks during surgery. During general anesthesia surgery, the muscles of the patient's neck are in a relaxed state after anesthesia, and the patient's tongue root will be blocked due to gravity, causing airway obstruction. Therefore, the staff will generally lift the patient's lower jaw before surgery to move the tongue root upward with the lower jaw, keeping the patient's airway unobstructed. However, since the patient is unconscious during surgery, he cannot maintain this position himself, so a cervical collar is needed to support and fix the patient's lifted lower jaw to ensure the patency of the patient's airway. However, since the shapes of patients' necks vary, the shapes and structures of existing cervical collars are mostly fixed and cannot be adjusted according to the length of the patient's neck, which can cause the cervical collar to be mismatched with the patient's neck, resulting in an inappropriate angle of the patient's lifted lower jaw and causing the patient's tongue root to still block the airway, affecting the normal ventilation of the patient's airway during surgery. SUMMARY

[0003] The present application provides an adjustable cervical collar for preventing airway obstruction during intravenous anesthesia to solve the problem that existing cervical collars cannot adapt to the shape of the patient's neck for support.

[0004] Technical scheme: An adjustable cervical collar for preventing airway obstruction during intravenous anesthesia, comprising a first cervical collar frame and a second cervical collar frame, wherein a magic tape is symmetrically arranged between the first cervical collar frame and the second cervical collar frame, the magic tape is used to connect the first cervical collar frame and the second cervical collar frame, the first cervical collar frame and the second cervical collar frame are in contact, and the edges of the two frames in contact are provided with intermeshing corrugated surfaces, a fixing frame is fixedly connected to one side of the first cervical collar frame away from the second cervical collar frame, an adjusting frame is slidingly connected to the fixing frame, a plurality of transmission air bags are arranged in a straight line array between the fixing frame and the adjusting frame, adjacent two transmission air bags are in communication with each other, the adjusting frame is hingedly connected with a pressing frame, the transmission air bags are used to drive the pressing frame to rotate, a torsional spring is fixedly connected between the adjusting frame and the pressing frame, the elastic coefficient of all the transmission air bags decreases with the increase of the distance between the adjusting frame and the pressing frame, and a fixing assembly is arranged on the first cervical collar frame and the second cervical collar frame, the fixing assembly is used to fix the positions of the first cervical collar frame and the second cervical collar frame.

[0005] Further, it is particularly preferred that the fixing assembly comprises symmetrically distributed first sliding frames, the first sliding frames are respectively slidably connected to the first and second neck supports, the first and second neck supports are slidably connected with second sliding frames, the first and second neck supports are provided with sliding cavities, the first and second sliding frames are respectively located in the corresponding sliding cavities and slide, the thickness of the sliding cavities gradually decreases from the middle to the edge, so as to increase the moving resistance of the first and second sliding frames.

[0006] Further, it is particularly preferred that the first sliding frames are fixed with symmetrically distributed support plates, the diameters of the support plates corresponding to the circles increase with the distance between the support plates and the second neck supports, the second sliding frames are fixed with limiting frames, and the opposite sides of the symmetrically distributed limiting frames are fixed with uniformly distributed flexible strips.

[0007] Further, it is particularly preferred that the extrusion frame is fixed with a positioning plate on the side close to the second sliding frame, and the positioning plate gradually bends towards the extrusion frame from the middle to the edge.

[0008] Further, it is particularly preferred that the positioning assembly is further provided, the positioning assembly is arranged on the extrusion frame, the positioning assembly is used to increase the stress position of the lower jaw of the patient, the positioning assembly comprises symmetrically distributed rotating frames, the symmetrically distributed rotating frames are hingedly connected to the extrusion frame, a dynamic air bag is fixed between the symmetrically distributed rotating frames, the dynamic air bag is used to drive the symmetrically distributed rotating frames to rotate, a limiting assembly is arranged on the rotating frame, the limiting assembly is used to limit the rotating angle of the rotating frame, and a clamping assembly is arranged on the rotating frame, the clamping assembly is used to clamp the jawbone of the patient.

[0009] Further, it is particularly preferred that the limiting assembly comprises a positioning frame, the positioning frame is fixed to the rotating frame, and uniformly distributed transmission balls are rotatably connected to the side of the positioning frame away from the rotating frame, the transmission balls are used to reduce the moving resistance of the positioning frame.

[0010] Further, it is particularly preferred that the clamping assembly comprises an elastic film, the elastic film is fixed to the rotating frame, a positioning air bag is fixed to the elastic film, an arc-shaped air bag is fixed between the positioning air bag and the rotating frame, the arc-shaped air bag communicates with the positioning air bag, and a plurality of guide frames are arranged between the elastic film and the corresponding rotating frame, the guide frames are used to guide the bending of the elastic film.

[0011] In addition, it is particularly preferred that the guide frame is composed of a first guide rod, a second guide rod, a third guide rod and a connecting plate, the first guide rod, the second guide rod and the third guide rod are all arc-shaped rods, the first guide rod is fixedly connected with the rotating frame, the connecting plate is fixedly connected with the elastic film, the positioning air bag and the third guide rod, the first guide rod and the second guide rod are both provided with a ball head, the second guide rod and the third guide rod are both provided with a snap ring, the first guide rod slides in the snap ring of the second guide rod, the second guide rod slides in the snap ring of the third guide rod, and the relative moving distance of the above three is limited by the ball head and the snap ring.

[0012] In addition, it is particularly preferred that the first guide rod, the second guide rod and the third guide rod correspond to a circle with the same central angle, and the central angle is greater than 70°.

[0013] In addition, it is particularly preferred that the elastic film is fixedly connected with a limiting strip on the side away from the positioning air bag.

[0014] In addition, it is particularly preferred that the thickness of the limiting strip increases with the increase of the distance between the limiting strip and the rotating frame.

[0015] Compared with the prior art, the present application has the following advantages: 1. The present application drives the extrusion frame to move and rotate by the inflation of the transmission air bag, so that the extrusion frame can adapt to the length of the patient's neck while pushing the patient's lower jaw upwards, ensuring that the patient's lower jaw can move the patient's tongue root upwards while being lifted, thereby keeping the patient's airway unobstructed.

[0016] 2. In the process of pushing the patient's lower jaw upwards, the present application drives the positioning frame to move by the rotating frame, so that the positioning frame clamps the patient's lower jaw, and the positioning frame pushes the lower jaw to drive the patient's lower jaw to move upwards, thereby increasing the stability of the patient's lower jaw during movement.

[0017] 3. In the process of the positioning frame approaching the patient's lower jaw, the present application drives the limiting strip to rotate by the elastic film, so that the limiting strip cooperates with the positioning frame to clamp and fix the patient's lower jaw area from the upper and lower sides, thereby improving the stability of the patient's lower jaw after being lifted. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of the first neck support frame, the second neck support frame and the fixed frame of the present application; Figure 3 is a schematic diagram of the three-dimensional structure of the adjusting frame, the transmission air bag and the extrusion frame of the present application; Figure 4Fig. 1 is a perspective view of the positioning plate, rotating frame and elastic film of the present application; Figure 5 Fig. 2 is a perspective view of the positioning air bag, arc-shaped air bag and guiding frame of the present application; Figure 6 Fig. 3 is a perspective view of the first guiding rod, second guiding rod and third guiding rod of the present application; Figure 7 Fig. 4 is an exploded view of the extruding frame, positioning plate and positioning air bag of the present application; Figure 8 Fig. 5 is a perspective view of the transmission air bag after inflation of the present application; Figure 9 Fig. 6 is a perspective view of the elastic film and guiding frame after rotation of the present application.

[0019] Reference signs: 1 - first neck support, 2 - second neck support, 3 - fixed frame, 4 - adjusting frame, 5 - transmission air bag, 6 - extruding frame, 7 - torsion spring, 8 - first sliding frame, 9 - second sliding frame, 10 - sliding cavity, 11 - support plate, 12 - limiting frame, 13 - positioning plate, 14 - rotating frame, 15 - power air bag, 16 - positioning frame, 17 - transmission ball, 18 - elastic film, 19 - positioning air bag, 20 - arc-shaped air bag, 21 - guiding frame, 211 - first guiding rod, 212 - second guiding rod, 213 - third guiding rod, 214 - connecting plate, 22 - limiting strip. DETAILED DESCRIPTION

[0020] Although the present application can be described with respect to particular applications or industries, those skilled in the art will recognize that the present application has a much broader scope. Any numerical designations, such as first or second, are merely illustrative and are not intended to limit the scope of the present application in any way.

[0021] Example 1: An adjustable neck support for preventing airway obstruction during intravenous anesthesia, comprising: Figures 1-5 and Figures 7-9As shown, the device includes a first neck support 1 and a second neck support 2. Symmetrically distributed Velcro straps are provided between the first neck support 1 and the second neck support 2 to connect them. The first neck support 1 and the second neck support 2 are in contact, and their contact edges are provided with interlocking corrugated surfaces. A fixing frame 3 is fixedly connected to the side of the first neck support 1 away from the second neck support 2. An adjusting frame 4 is slidably connected to the fixing frame 3. A linear array of transmission airbags 5 is provided between the fixing frame 3 and the adjusting frame 4, and adjacent transmission airbags 5 are interconnected. A compression frame 6 is hinged to the adjusting frame 4. The transmission airbags 5 are used to push the compression frame 6 to rotate. A torsion spring 7 is fixedly connected between the adjusting frame 4 and the compression frame 6. The elastic coefficient of all transmission airbags 5 decreases as the distance between them and the hinge points of the adjusting frame 4 and the compression frame 6 increases. A fixing component is provided on both the first neck support 1 and the second neck support 2 to fix their positions.

[0022] The above solution provides a way to ensure that the base of the tongue moves upward with the patient's jaw when the patient's jaw is lifted, thereby keeping the patient's airway open. Two Velcro straps are provided between the left and right sides of the first neck support 1 and the second neck support 2 to improve the stability of the connection between the first neck support 1 and the second neck support 2. In use, the first neck support 1 is located on the upper side of the patient's neck, and the second neck support 2 is located on the lower side of the patient's neck. The corrugated surface between the first neck support 1 and the second neck support 2 is used to guide the two to engage with each other and reduce the probability of displacement during use, thereby improving the fixation effect of the first neck support 1 and the second neck support 2 on the patient's neck. The airbags in this paper are all made of elastic material so that they can automatically retract to their initial state after inflation.

[0023] The fixed frame 3 is located in the middle of the front side of the first neck support 1. Two guide blocks are symmetrically distributed on the left and right sides inside the fixed frame 3. The adjusting frame 4 has two symmetrically distributed sliding grooves on the left and right sides. The guide blocks of the fixed frame 3 slide within the corresponding sliding grooves on the adjusting frame 4. In this paper, there are eight transmission airbags 5. The uppermost and lowermost transmission airbags 5 are fixedly connected to the adjusting frame 4 and the fixed frame 3, respectively, and adjacent transmission airbags 5 are fixedly connected and connected to each other. The lowermost transmission airbag 5 is externally connected to an air pump. The transmission airbags 5 can expand vertically and horizontally. The elastic coefficient of the transmission airbags 5 in the horizontal direction gradually increases from bottom to top. The shape of the inflated transmission airbag 5 is shown in the reference diagram. Figure 8 The compression frame 6 is hinged to the upper part of the adjusting frame 4. When the patient experiences airway obstruction due to the posterior displacement of the tongue, the compression frame 6 rotates clockwise. Figure 4 (Looking from right to left) Lift the patient's chin upwards, causing the base of the patient's tongue to move upwards along with the chin. The torsion spring 7 is used to drive the compression frame 6 to rotate in the opposite direction and reset.

[0024] During the use of this device, staff observe the oxygen content (hereinafter referred to as blood oxygen) of the patient's blood through existing monitoring devices. When the blood oxygen-related parameters in the monitoring device drop to the warning value (this value can be set according to the actual situation), the air pump is activated to introduce gas into the transmission airbags 5. The eight transmission airbags 5 gradually expand forward, pushing the lower part of the compression frame 6 to rotate clockwise gradually. Figure 4 (Looking from right to left) The air pump approaches the patient's lower jaw, and simultaneously, the transmission airbag 5 expands vertically, pushing the adjusting frame 4 upward. This causes the adjusting frame 4 to move the squeezing frame 6 in sync, adjusting its position. When the lower part of the squeezing frame 6 contacts the patient's lower jaw, the lower part of the squeezing frame 6 continues to rotate and lifts the patient's lower jaw upward, causing the patient's lower jaw to move the tongue root upward, reducing obstruction to the airway and thus clearing the patient's airway. When the air pressure inside the transmission airbag 5 reaches a specified value (this value can be set according to actual conditions), the air pump stops supplying gas to the transmission airbag 5 and maintains its air pressure unchanged until the patient's blood oxygen-related parameters in the monitoring device return to the specified value (this value can be set according to actual conditions). Then, the air pump extracts the gas from the transmission airbag 5, the transmission airbag 5 contracts, and its upper parts move in the opposite direction to reset. The torsion spring 7 drives the squeezing frame 6 to rotate in the opposite direction to reset and separate from the patient's lower jaw. Afterward, if the patient's airway is obstructed again, the squeezing frame 6 repeats the above process to lift the patient's lower jaw again.

[0025] Furthermore, such as Figures 1-3 As shown, the fixing assembly includes symmetrically distributed first sliding frames 8, which are slidably connected to the first neck support 1 and the second neck support 2 respectively. The first neck support 1 and the second neck support 2 are each slidably connected to a second sliding frame 9. The first neck support 1 and the second neck support 2 are each provided with a sliding cavity 10. The first sliding frame 8 and the second sliding frame 9 slide within their respective sliding cavities 10. The thickness of the sliding cavity 10 gradually decreases from the middle to its edge to increase the moving resistance of the first sliding frame 8 and the second sliding frame 9.

[0026] Furthermore, such as Figures 1-3 As shown, symmetrically distributed support plates 11 are fixedly connected to the first sliding frame 8. The diameter of the circle corresponding to the support plate 11 increases as the distance between it and the second neck bracket 2 increases. The second sliding frame 9 is fixedly connected to a limit frame 12. Flexible strips are uniformly distributed on the opposite sides of the symmetrically distributed limit frames 12.

[0027] Furthermore, such as Figures 3-5 , Figure 7 and Figure 9 As shown, a positioning plate 13 is fixedly connected to the side of the extrusion frame 6 near the second sliding frame 9. The positioning plate 13 gradually bends towards the extrusion frame 6 from the middle to the edge.

[0028] The above solution provides a method for fixing the positions of the first neck support 1 and the second neck support 2 when the patient's chin is lifted; the first sliding frame 8 and the second sliding frame 9 are two symmetrically distributed front and back, and the first sliding frame 8 is located above the second sliding frame 9. The first sliding frame 8 and the second sliding frame 9 are both arc-shaped plates. The thickness of the sliding cavity 10 gradually decreases from the middle to the upper and lower sides to increase the resistance when it moves relative to the first sliding frame 8 and the second sliding frame 9, so as to avoid the first neck support 1 (second neck support 2) moving along the first sliding frame 8 (second sliding frame 9) after the first sliding frame 8 and the second sliding frame 9 move away from each other, thus affecting the fixation effect of the first neck support 1 (second neck support 2) on the patient's neck. The sliding cavities 10 of the first neck support 1 and the second neck support 2 are connected by a hose, and an air pump is connected to the outside of any sliding cavity 10. The air pump introduces gas through the adjacent sliding cavity 10, so that the first sliding frame 8 and the second sliding frame 9 move in opposite directions.

[0029] Two support plates 11 are symmetrically distributed on the same first sliding frame 8, both located on the upper side of the first sliding frame 8. The support plates 11 are made of flexible material. The shape and material of the support plates 11 are used to adapt to the shape of the patient's head when the first sliding frame 8 moves upward, and to support the patient's head to reduce the probability of the patient's mandible shifting during the lifting process. The positioning plate 13 is made of elastic material and can be bent and deformed during use. It is used to adapt to different shapes of the mandible when it is compressed by the compression frame 6 rotating clockwise. Figure 4 During the process (viewed from right to left), the positioning plate 13 presses the tip of the patient's mandible from the inside to complete the initial fixation of the patient's mandible, reducing the probability of the mandible and the compression frame 6 being misaligned and separated during the process of the compression frame 6 pushing the mandible up.

[0030] The limiting frame 12 is located at the lower part of the second sliding frame 9. When the device is installed on the patient's neck, the operator can adjust the limiting frame 12 to make the second sliding frame 9 move the first neck support 1 (second neck support 2) to ensure that the parts on it are located in the middle of the patient's neck. When the second sliding frame 9 moves downward, the limiting frame 12 presses the patient's shoulder to fix the position of the first neck support 1 and the second neck support 2, so that the reaction force of the compression frame 6 pushing the patient's neck upward is finally transmitted to the patient's shoulder, thereby reducing the pressure of the first neck support 1 on the patient's neck. The flexible strip on the limiting frame 12 is used to adapt to the shape of the patient's shoulder and increase the stability of the position of the limiting frame 12. The shapes of the support plate 11 and the limiting frame 12 can be adjusted according to actual use requirements.

[0031] Example 2: Based on Example 1, such as Figures 4-9As shown, it also includes a positioning component, which is disposed on the compression frame 6. The positioning component is used to increase the force position at the patient's mandible. The positioning component includes symmetrically distributed rotating frames 14, which are all hinged to the compression frame 6. A power airbag 15 is fixed between the symmetrically distributed rotating frames 14. The power airbag 15 is used to push the symmetrically distributed rotating frames 14 to rotate. A limit component is provided on the rotating frame 14 to limit the rotation angle of the rotating frame 14. A clamping component is provided on the rotating frame 14 to clamp the patient's jawbone.

[0032] The above-described scheme provides a method to reduce the pressure on the patient's mandibular skin during the upward movement of the mandible. In this paper, there are two rotating frames 14, hinged to the lower part of the compression frame 6. A power airbag 15 is located above the two rotating frames 14. An air pump is externally connected to the power airbag 15. During use, the air pump supplies gas to the power airbag 15, causing it to inflate and push the two rotating frames 14, thus distancing the upper ends of the two rotating frames 14 from each other and adapting to different patient mandibular shapes (see reference). Figure 8 and Figure 9 This increases the stability of the patient's jaw when it is raised.

[0033] Furthermore, such as Figure 4 , Figure 5 and Figures 7-9 As shown, the limiting assembly includes a positioning frame 16, which is fixedly connected to the rotating frame 14. The side of the positioning frame 16 away from the rotating frame 14 is rotatably connected to evenly distributed transmission balls 17, which are used to reduce the resistance to the movement of the positioning frame 16.

[0034] Furthermore, such as Figures 3-9 As shown, the clamping assembly includes an elastic membrane 18, which is fixedly attached to the rotating frame 14. A positioning airbag 19 is fixedly attached to the elastic membrane 18. An arc-shaped airbag 20 is fixedly attached between the positioning airbag 19 and the rotating frame 14. The arc-shaped airbag 20 communicates with the positioning airbag 19. Multiple guide frames 21 are provided between the elastic membrane 18 and the corresponding rotating frame 14. The guide frames 21 are used to guide the elastic membrane 18 to bend.

[0035] In the above scheme, the positioning frame 16 is located in front of the rotating frame 14, the width of the positioning frame 16 is smaller than the width of the rotating frame 14, and the positioning frame 16 is L-shaped. Figure 5(Viewed from top to bottom), and there is a gap between the front part of the positioning frame 16 and the rotating frame 14, which is used to allow for skin movement in this area during the process of the positioning frame 16 pressing the patient's mandible, so as to facilitate the positioning frame 16 fixing the patient's mandible. During the process of the rotating frame 14 driving the positioning frame 16 to rotate, the front part of the positioning frame 16 locks the patient's mandible, fixing the position of the rotating frame 14. There are six transmission balls 17 distributed vertically. During the process of the positioning frame 16 moving along the patient's mandibular skin, the transmission balls 17 rotate along the patient's skin, which reduces the friction between the positioning frame 16 and the patient's skin, and at the same time reduces the probability of skin accumulating near the patient's mandible due to the pushing of the positioning frame 16, thus facilitating the movement of the skin. The rotating frame 14 is fixed in position. The elastic membrane 18 is used to clamp the patient's mandible after bending and cooperating with the positioning frame 16. The positioning airbag 19 is used to provide the elastic membrane 18 with the compressive force on the mandible. The arc-shaped airbag 20 is used to provide the power for the bending of the elastic membrane 18. The positioning airbag 19 is connected to an air pump. In use, the air pump introduces air into the positioning airbag 19, causing the positioning airbag 19 and the arc-shaped airbag 20 to expand and drive the elastic membrane 18 to bend. The guide frame 21 is used to guide the deformation of the elastic membrane 18, so that the outer side of the elastic membrane 18 rotates to the front side of the corresponding rotating frame 14, thereby jointly clamping the patient's mandible and improving the stability of the position after the patient's mandible is raised. The shape and position of the elastic membrane 18 and its corresponding parts after bending are referenced. Figure 8 and Figure 9 .

[0036] Furthermore, such as Figures 5-9 As shown, the guide frame 21 is composed of a first guide rod 211, a second guide rod 212, a third guide rod 213, and a connecting plate 214. The first guide rod 211, the second guide rod 212, and the third guide rod 213 are all arc-shaped rods. The first guide rod 211 is fixedly connected to the corresponding rotating frame 14, and the connecting plate 214 is fixedly connected to the corresponding elastic membrane 18, positioning airbag 19, and the third guide rod 213. The first guide rod 211 and the second guide rod 212 are both provided with ball heads, and the second guide rod 212 and the third guide rod 213 are both provided with retaining rings. The first guide rod 211 slides within the retaining ring of the second guide rod 212, and the second guide rod 212 slides within the retaining ring of the third guide rod 213. The relative movement distance of the three components is limited by the ball heads and retaining rings.

[0037] Furthermore, such as Figures 5-9 As shown, the central angles of the circles corresponding to the first guide rod 211, the second guide rod 212, and the third guide rod 213 are the same, and the central angle is greater than 70°.

[0038] Furthermore, such as Figures 4-7 and Figure 9 As shown, a limiting strip 22 is fixed to the side of the elastic membrane 18 away from the positioning airbag 19.

[0039] Furthermore, such as Figures 4-7 and Figure 9 As shown, the thickness of the limiting strip 22 increases with the increase of the distance between it and the rotating frame 14.

[0040] The above scheme provides a method for guiding the bending of the elastic membrane 18. After the arc-shaped airbag 20 inflates, the relative movement between the first guide rod 211, the second guide rod 212, and the third guide rod 213 guides the bending of the elastic membrane 18. The central angles of the first guide rod 211, the second guide rod 212, and the third guide rod 213 are used to ensure that the limiting strip 22 on the elastic membrane 18 can contact the patient's skin after bending. The limiting strip 22 is located on the front side of the elastic membrane 18. The thickness variation of the limiting strip 22 is used to make the depth of the indentation of the patient's skin away from the bending point of the elastic membrane 18 greater than the depth on the other side after it squeezes the patient's skin, thereby increasing the resistance when the limiting strip 22 moves relative to the patient's skin and further increasing the stability of the position of the rotating frame 14.

[0041] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments.

Claims

1. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia, characterized in that, The device includes a first neck support (1) and a second neck support (2). Symmetrically distributed Velcro straps are provided between the first neck support (1) and the second neck support (2) to connect them. The first neck support (1) and the second neck support (2) are in contact, and their contact edges are provided with interlocking corrugated surfaces. A fixing frame (3) is fixedly connected to the side of the first neck support (1) away from the second neck support (2). An adjusting frame (4) is slidably connected to the fixing frame (3). A linear array is provided between the fixing frame (3) and the adjusting frame (4). The transmission airbags (5) are arranged in a row, and two adjacent transmission airbags (5) are connected to each other. The adjustment frame (4) is hinged to the compression frame (6). The transmission airbags (5) are used to push the compression frame (6) to rotate. A torsion spring (7) is fixed between the adjustment frame (4) and the compression frame (6). The elastic coefficient of all the transmission airbags (5) decreases as the distance between them and the hinge between the adjustment frame (4) and the compression frame (6) increases. The first neck support (1) and the second neck support (2) are jointly provided with a fixing component. The fixing component is used to fix the position of the first neck support (1) and the second neck support (2).

2. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 1, characterized in that, The fixing component includes symmetrically distributed first sliding frames (8), which are slidably connected to the first neck support (1) and the second neck support (2), respectively. The first neck support (1) and the second neck support (2) are slidably connected to second sliding frames (9). The first neck support (1) and the second neck support (2) are each provided with a sliding cavity (10). The first sliding frame (8) and the second sliding frame (9) slide in the corresponding sliding cavity (10), respectively. The thickness of the sliding cavity (10) gradually decreases from the middle to its edge to increase the moving resistance of the first sliding frame (8) and the second sliding frame (9).

3. An adjustable neck brace for preventing airway obstruction under intravenous anesthesia according to claim 2, characterized in that, The first sliding frame (8) is fixed with symmetrically distributed support plates (11). The diameter of the circle corresponding to the support plate (11) increases as the distance between it and the second neck support (2) increases. The second sliding frame (9) is fixed with a limit frame (12). The opposing sides of the symmetrically distributed limit frames (12) are fixed with uniformly distributed flexible strips.

4. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 3, characterized in that, The extrusion frame (6) has a positioning plate (13) fixedly attached to one side near the second sliding frame (9). The positioning plate (13) gradually bends towards the extrusion frame (6) from the middle to the edge.

5. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 4, characterized in that, It also includes a positioning component, which is disposed on the compression frame (6). The positioning component is used to increase the force position at the patient's mandible. The positioning component includes symmetrically distributed rotating frames (14). The symmetrically distributed rotating frames (14) are all hinged to the compression frame (6). A power airbag (15) is fixed between the symmetrically distributed rotating frames (14). The power airbag (15) is used to push the symmetrically distributed rotating frames (14) to rotate. A limit component is provided on the rotating frame (14). The limit component is used to limit the rotation angle of the rotating frame (14). A clamping component is provided on the rotating frame (14). The clamping component is used to clamp the patient's jawbone.

6. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 5, characterized in that, The limiting component includes a positioning frame (16), which is fixed to the rotating frame (14). The side of the positioning frame (16) away from the rotating frame (14) is rotatably connected with uniformly distributed transmission balls (17), which are used to reduce the resistance of the positioning frame (16) to movement.

7. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 6, characterized in that, The clamping assembly includes an elastic membrane (18), which is fixed to the rotating frame (14). A positioning airbag (19) is fixed to the elastic membrane (18). An arc-shaped airbag (20) is fixed between the positioning airbag (19) and the rotating frame (14). The arc-shaped airbag (20) communicates with the positioning airbag (19). A plurality of guide frames (21) are provided between the elastic membrane (18) and the corresponding rotating frame (14). The guide frames (21) are used to guide the elastic membrane (18) to bend.

8. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 7, characterized in that, The guide frame (21) is composed of a first guide rod (211), a second guide rod (212), a third guide rod (213), and a connecting plate (214). The first guide rod (211), the second guide rod (212), and the third guide rod (213) are all arc-shaped rods. The first guide rod (211) is fixedly connected to the corresponding rotating frame (14), and the connecting plate (214) is fixedly connected to the corresponding elastic membrane (18), the positioning airbag (19), and the third guide rod (213). The first guide rod (211) and the second guide rod (212) are both provided with ball heads, and the second guide rod (212) and the third guide rod (213) are both provided with retaining rings. The first guide rod (211) slides within the retaining ring of the second guide rod (212), and the second guide rod (212) slides within the retaining ring of the third guide rod (213). The relative movement distance of the three is limited by the ball heads and retaining rings.

9. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 8, characterized in that, The central angles of the circles corresponding to the first guide rod (211), the second guide rod (212), and the third guide rod (213) are the same, and the central angles are greater than 70°.

10. An adjustable neck brace for preventing airway obstruction during intravenous anesthesia according to claim 8, characterized in that, The elastic membrane (18) is fixed to a limiting strip (22) on the side away from the positioning airbag (19), and the thickness of the limiting strip (22) increases with the distance between it and the rotating frame (14).

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