Clinical anesthesia intubation auxiliary equipment

Abstract

The invention relates to the technical field of anesthesia intubation, and provides a clinical anesthesia intubation auxiliary device which comprises a bed body connecting plate, a neck supporting mechanism, a second rotating shaft and a mouth opening mechanism, when a patient is on a sickbed, the shoulders of the patient make contact with the bed body connecting plate, and the position, close to the head of the patient, of the bed body connecting plate is detachably connected with a first rotating shaft; the neck supporting mechanism is used for supporting and fixing the neck of the patient at multiple angles, the second rotating shaft is rotationally arranged on the side, away from the first rotating shaft, of the neck supporting mechanism, the second rotating shaft is detachably connected with a head supporting frame, and the head supporting frame is used for fixing the head of the patient; by means of the technical scheme, the anesthesia intubation auxiliary device is used for solving the problems that in the prior art, most anesthesia intubation auxiliary devices stabilize the oral cavity of the patient, and the angle of the throat and the angle of the trachea of the patient are difficult to adjust.

Description

Technical Field

[0001] The present invention relates to the biomedical engineering industry, and more specifically to the technical field of anesthesia intubation equipment. Specifically, it relates to a clinical anesthesia intubation assistance device. Background Art

[0002] Clinical anesthesia intubation is performed during general anesthesia of a patient and when airway management is required. For example, during surgery, a doctor needs to ensure the patient's airway patency, oxygen supply, and ventilation. At this time, the intubation can be inserted into the trachea through the patient's mouth to ensure smooth breathing. In cases where the patient is obese, has limited neck movement, or requires rapid airway control during emergency rescue, it is difficult for doctors to insert the tube in these situations and auxiliary devices may be used to help doctors insert the tube quickly and accurately.

[0003] When a doctor performs intubation, the patient's mouth needs to be opened, and at the same time, the patient's head needs to be stabilized. The patient's head may shake uncontrollably during anesthesia, and then intubation is performed. Stabilizing the patient consumes a doctor's physical strength. If the doctor's hand shakes, intubation may also cause damage to the patient's oral cavity. Most existing anesthesia intubation assistance devices only open the patient's mouth and stabilize the opening of the patient's mouth, but it is difficult to control the patient's head position, which may increase the difficulty of intubation for doctors due to the change in the angle of the patient's throat. Summary of the Invention

[0004] The present invention provides a clinical anesthesia intubation assistance device to solve the problem that most existing anesthesia intubation assistance devices only stabilize the patient's mouth and are difficult to adjust the angles of the patient's throat and trachea.

[0005] The technical solution of the present invention is as follows: A clinical anesthesia intubation assistance device includes a bed body connecting plate, a neck support mechanism, a second rotating shaft, and a mouth opening mechanism. The bed body connecting plate is fixedly connected to the hospital bed, and when the patient is on the hospital bed, the shoulders are in contact with the bed body connecting plate. A first rotating shaft is detachably connected to a position on the bed body connecting plate close to the patient's head. The neck support mechanism is rotatably connected to the first rotating shaft, and the neck support mechanism is used to support and fix the patient's neck at multiple angles. The second rotating shaft is rotatably arranged on the side of the neck support mechanism away from the first rotating shaft. A head support frame is detachably connected to the second rotating shaft, and the head support frame is used to fix the patient's head. The mouth opening mechanism is arranged above the head support frame, and the mouth opening mechanism is used to open the patient's mouth during intubation.

[0006] The neck support mechanism includes a neck support plate, an equiangular deflection assembly and a gear set. The rotating shaft one and the rotating shaft two are both rotatably arranged on the neck support plate, and the neck support plate contacts the patient's neck. Two equiangular deflection assemblies are provided, and the equiangular deflection assemblies are rotatably arranged on the neck support plate. The two equiangular deflection assemblies are respectively arranged at two ends of the neck support plate in opposite directions. The equiangular deflection assemblies are used to control the rotating angles of the rotating shaft one and the rotating shaft two to be the same. Two gear sets are provided, and the gear sets are arranged on the neck support plate. The two gear sets are respectively connected to the two ends of the rotating shaft one in a transmission manner.

[0007] The equiangular deflection assembly includes a worm one, a worm two, a worm wheel and a locking component. The worm one is rotatably connected to the neck support plate, the worm one is transmission-connected to the gear set, the worm two is rotatably connected to the neck support plate, the worm two is fixedly connected to the rotating shaft two, the worm wheel is rotatably arranged in the neck support plate, the worm one and the worm two are both meshed with the worm wheel, the worm one and the worm two are parallel, the locking component is arranged on the neck support plate, the locking component is detachably connected to the worm wheel, and the locking component is used to fix the rotation of the worm wheel.

[0008] The locking component includes a protrusion shaft and a limiting groove. The protrusion shaft is rotatably and slidably arranged on the neck support plate. The protrusion shaft passes through the center of the worm gear. The protrusion shaft is slidably connected to the worm gear. The limiting groove is arranged in the neck support plate. The protrusion shaft and the limiting groove are detachably connected.

[0009] The gear set includes two T-shaped gears, which are rotatably arranged on the neck support plate. A large gear and a small gear are respectively arranged at both ends of the T-shaped gear. The large gears on the two T-shaped gears are meshed with each other, and the small gears on the two T-shaped gears are respectively connected to the rotating shaft 1 and the worm 1 for transmission.

[0010] When the worm wheel rotates, the worm 1 and the worm 2 rotate in the same direction and at the same speed, the worm 1 and the rotating shaft 1 rotate in opposite directions and at the same speed, and the rotating shaft 1 and the rotating shaft 2 rotate in opposite directions and at the same speed.

[0011] The head support frame is provided with a plurality of arc-shaped rods, and the plurality of arc-shaped rods are in contact with the patient's head. The arc-shaped rods located on both sides of the head support frame are provided with elastic clamp 1 and elastic clamp 2, and the elastic clamp 2 is arranged on one side of the arc-shaped rod close to the neck support plate. The elastic clamp 1 and the elastic clamp 2 are both made of elastic material, and the elastic clamp 1 and the elastic clamp 2 are both bent toward the center of the head support frame.

[0012] The first elastic clamping jaw is fixedly connected to the arc rod, and the second elastic clamping jaw is detachably connected to the arc rod. When the patient lies on his side, the second elastic clamping jaw can be removed to leak out of the patient's mouth.

[0013] The mouth opening mechanism includes an expansion ring, a plug-in slot and a tongue depressor. The expansion ring is arranged in the patient's mouth to expand the patient's upper jaw, lower jaw and cheeks. The position where the expansion ring contacts the inside of the patient's mouth is set to an elastic material. The plug-in slot is arranged on the side of the expansion ring close to the lower jaw. The tongue depressor is detachably connected to the plug-in slot, and the tongue depressor is used to press the patient's tongue.

[0014] The angle between the neck support plate and the bed body connecting plate is the same as the angle between the neck support plate and the head support frame.

[0015] The working principle and beneficial effects of the present invention are: 1. In the present invention, a head support frame is provided, and the head support frame is rotated on the neck support mechanism, so that the head can be supported at multiple angles. The patient's head can be tilted back according to different conditions such as the patient's body shape, and the throat and trachea can be straightened to facilitate intubation operations; 2. In the present invention, a neck support mechanism is provided, and the two ends of the neck support mechanism are respectively connected to the bed body connection plate and the head support frame through the first and second rotating shafts. When the patient's head is tilted back with the head support frame, the neck support mechanism controls the rotation angle of the head support frame on the one hand, and supports the patient's neck on the other hand, and the stability of the head can also be improved by supporting the neck; 3. In the present invention, a neck support mechanism is provided to support the patient's neck while adjusting the rotation angle of the head support frame. A head support frame is provided to support the patient's head to prevent uncontrolled shaking of the patient's head under anesthesia. A mouth opening mechanism is provided to keep the patient's mouth open to facilitate the doctor's operation. Compared with existing auxiliary equipment, the present application reduces the doctor's intubation time and difficulty from the perspective of patient posture control, and also reduces the patient's discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 It is a partial cross-sectional structural schematic diagram of the bed body connecting plate and the head support frame in the present invention; Figure 4Schematic diagram of the internal sectional structure of the neck support plate in the present invention; Figure 5 Schematic diagram of a partial structure where the gear set and the equal-angle deflection assembly cooperate in the present invention; Figure 6 Schematic diagram of a partial internal sectional structure of the neck support plate from another perspective in the present invention; Figure 7 Exploded partial structure schematic diagram of the expansion ring and the tongue depressor in the present invention.

[0018] In the figure: 1. Bed connecting plate; 2. First rotating shaft; 3. Second rotating shaft; 4. Head support frame; 5. Neck support plate; 6. First worm; 7. Second worm; 8. Worm gear; 9. Bump rotating shaft; 10. Limiting groove; 11. T-shaped gear; 12. Arc-shaped rod; 13. First elastic jaw; 14. Second elastic jaw; 15. Expansion ring; 16. Insertion slot; 17. Tongue depressor. Detailed implementation manners

[0019] Next, in combination with the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by the present invention.

[0020] Such as Figures 1 to 7As shown, the anesthesia intubation device of this embodiment belongs to the biomedical engineering industry, and proposes a clinical anesthesia intubation auxiliary device, including a bed connecting plate 1, a neck support mechanism, a rotating shaft 2 3 and a mouth opening mechanism. The bed connecting plate 1 is fixedly connected to the bed. When the patient is on the bed, the shoulder contacts the bed connecting plate 1. The bed connecting plate 1 is detachably connected with a rotating shaft 2 at a position close to the patient's head. The neck support mechanism is rotatably connected to the rotating shaft 2. The neck support mechanism is used to support and fix the patient's neck at multiple angles. The rotating shaft 2 3 is rotatably set on the side of the neck support mechanism away from the rotating shaft 2. The rotating shaft 2 3 is detachably connected with a head support frame 4. The head support frame 4 is used to fix the patient's head. The mouth opening mechanism is set Above the head support frame 4, the mouth opening mechanism is used to open the patient's mouth when the patient is intubated. The auxiliary equipment in the present application is mainly used to support the patient's head at multiple angles after the patient lies on the bed. Compared with the traditional state of the patient's head lying flat, the throat is straightened when the head is tilted back, and intubation and trachea observation can be performed more easily. Traditional auxiliary equipment mostly opens the mouth to prevent the patient from closing his mouth during anesthesia, but the doctor still needs to hold the head steady during intubation to prevent the head from shaking and causing the inserted oxygen tube to slide in the trachea. The present application supports the head and neck at multiple angles, opens the mouth at the same time, prevents the patient from closing his mouth, and makes the trachea tend to be straightened, thereby reducing the difficulty and time of intubation.

[0021] like Figures 4 to 5 As shown, the neck support mechanism includes a neck support plate 5, an equiangular deflection assembly and a gear set. The rotating shaft 1 2 and the rotating shaft 2 3 are both rotatably set on the neck support plate 5, and the neck support plate 5 contacts the patient's neck. There are two equiangular deflection assemblies, which are rotatably set on the neck support plate 5. The two equiangular deflection assemblies are respectively arranged at the two ends of the neck support plate 5 in opposite directions. The equiangular deflection assembly is used to control the rotation angle of the rotating shaft 1 2 and the rotating shaft 2 3 to be the same. There are two gear sets, which are arranged on the neck support plate 5, and the two gear sets are respectively connected to the two ends of the rotating shaft 1 2 in transmission. On the one hand, the neck support plate 5 controls the rotation angle of the neck support plate 5 on the bed connecting plate 1 through the equiangular deflection assembly, and on the other hand, controls the rotation angle of the head support frame 4 on the neck support plate 5, and supports the patient's neck at the same time.

[0022] like Figures 4 to 5As shown in the figure, the isometric deflection assembly includes a first worm 6, a second worm 7, a worm gear 8 and a locking component. The first worm 6 is rotatably connected to the neck support plate 5. The first worm 6 is in transmission connection with the gear set. The second worm 7 is rotatably connected to the neck support plate 5. The second worm 7 is fixedly connected to the second rotating shaft 3. The worm gear 8 is rotatably arranged in the neck support plate 5. Both the first worm 6 and the second worm 7 are meshed with the worm gear 8. The first worm 6 and the second worm 7 are parallel to each other. The locking component is arranged on the neck support plate 5. The locking component is detachably connected to the worm gear 8. The locking component is used to fix the rotation of the worm gear 8. When driving the head support frame 4 to rotate, the head support frame 4 will drive the second rotating shaft 3 and the second worm 7 to rotate. At the same time, it will pull the neck support plate 5 to rotate on the first rotating shaft 2. Since the first rotating shaft 2 is fixed, when the neck support plate 5 rotates, the first rotating shaft 2 rotates relative to the neck support plate 5. The first rotating shaft 2 drives the first worm 6 to rotate through the gear set. Due to the self-locking characteristics of the worm gear 8 and the worm, only when both the first worm 6 and the second worm 7 rotate will the worm gear 8 rotate accordingly. Only when the head support frame 4 is pulled or pressed can it rotate. It is impossible to move the neck support plate 5 alone. At the same time, since the diameters of the first worm 6 and the second worm 7 are the same, the rotation angles of the first worm 6 and the second worm 7 during rotation are also the same. Through the gear set, the first worm 6 and the first rotating shaft 2 rotate in the opposite direction with the same axis and the same speed. Furthermore, the included angle between the neck support plate 5 and the bed connection plate 1, and the included angle between the neck support plate 5 and the head support frame 4 are the same, which can prevent the neck support angle of the neck support plate 5 for the patient from being too small, resulting in the patient's trachea being unobstructed. By making the angles between the neck support plate 5 and the bed connection plate 1 and the head support frame 4 the same, a large-angle support for the neck can be maintained.

[0023] As Figures 4 to 6 shown, the locking component includes a convex block rotating shaft 9 and a limiting groove 10. The convex block rotating shaft 9 is rotatably and slidably arranged on the neck support plate 5. The convex block rotating shaft 9 penetrates through the center of the worm gear 8. The convex block rotating shaft 9 is slidably connected to the worm gear 8. The limiting groove 10 is opened in the neck support plate 5. The convex block rotating shaft 9 is detachably connected to the limiting groove 10. The convex block on the convex block rotating shaft 9 slides on the worm gear 8. When the worm gear 8 rotates, it takes the convex block rotating shaft 9 as the center and drives the convex block rotating shaft 9 to rotate on the neck support plate 5. When pulling the convex block rotating shaft 9 to slide until the convex block is docked with the limiting groove 10, neither the convex block rotating shaft 9 nor the worm gear 8 can rotate. At this time, neither the first worm 6 nor the second worm 7 can rotate, thereby locking the rotation angle of the head support frame 4.

[0024] As Figures 4 to 5As shown, the gear set includes two T-shaped gears 11, which are rotatably arranged on the neck support plate 5, and a large gear and a small gear are respectively arranged at both ends of the T-shaped gear 11, and the large gears on the two T-shaped gears 11 are meshed with each other, and the small gears on the two T-shaped gears 11 are respectively connected to the rotating shaft 2 and the worm 6 for transmission, and gears with the same diameter as the small gears are arranged on both ends of the rotating shaft 2 and the worm 6, and the gears are meshed with the small gears. When the worm wheel 8 rotates, the worm 6 and the worm 2 7 rotate in the same direction and at the same speed, the worm 6 and the rotating shaft 2 rotate in the opposite direction and at the same speed, and the rotating shaft 2 and the rotating shaft 3 rotate in the opposite direction and at the same speed. Through the mutual meshing transmission of the two T-shaped gears 11, the worm 6 and the rotating shaft 2 can be flipped and rotated.

[0025] like Figure 1 and Figure 7 As shown, a plurality of arc-shaped rods 12 are arranged on the head support frame 4, and the plurality of arc-shaped rods 12 are in contact with the patient's head. The arc-shaped rods 12 on both sides of the head support frame 4 are provided with elastic clamps 13 and 14. The elastic clamps 14 are arranged on one side of the arc-shaped rods 12 close to the neck support plate 5. The elastic clamps 13 and 14 are both made of elastic material. The elastic clamps 13 and 14 are both bent toward the center of the head support frame 4. The elastic clamps 13 are fixedly connected to the arc-shaped rods 12. 12, the elastic clamping claw 2 14 is detachably connected to the arc rod 12. When the patient lies on his side, the elastic clamping claw 2 14 can be removed to expose the patient's mouth. The elastic clamping claw 1 13 and the elastic clamping claw 2 14 are arranged in an arc shape, and a plurality of openings are arranged on the inner circles of the elastic clamping claw 1 13 and the elastic clamping claw 2 14 to facilitate the bending of the elastic clamping claw 1 13 and the elastic clamping claw 2 14. The two elastic clamping claws 1 13 and the two elastic clamping claws 2 14 clamp the patient's head to prevent the patient's head from shaking in a large range.

[0026] like Figure 1 and Figure 7 As shown, the mouth opening mechanism includes a stretching ring 15, a plug-in slot 16 and a tongue depressor 17. The stretching ring 15 is arranged in the patient's mouth to stretch the patient's upper jaw, lower jaw and cheeks. The position where the stretching ring 15 contacts the inside of the patient's mouth is set to an elastic material. The plug-in slot 16 is arranged on the side of the stretching ring 15 close to the lower jaw. The tongue depressor 17 is detachably connected to the plug-in slot 16. The tongue depressor 17 is used to press the patient's tongue. The stretching ring 15 stretches the patient's lower jaw and opens the cheeks on both sides of the mouth. At this time, the mouth will not be closed. At the same time, the tongue is pressed on the lower jaw by the tongue depressor 17 to prevent the tongue from drooping when the patient tilts his head back and affecting the intubation.

[0027] In this embodiment, after the patient lies on the hospital bed, the shoulders are on the bed body connecting plate 1, the head is placed on the head support frame 4, the first elastic jaw 13 and the second elastic jaw 14 clamp the patient's head. At this time, the convex block rotating shaft 9 is pushed to separate it from the limiting groove 10. At this time, the patient's head presses the head support frame 4 by gravity, and the head support frame 4 drives the neck support plate 5 to move downward. At this time, the neck support plate 5 rotates on the first rotating shaft 2, the second rotating shaft 3 rotates on the neck support plate 5, the second rotating shaft 3 drives the second worm 7 to rotate, the two T-shaped gears 11 rotate, driving the first worm 6 to rotate. The first worm 6 and the second worm 7 rotate in the same direction, and the worm wheel 8 drives the convex block rotating shaft 9 to rotate. At this time, the neck support plate 5 rotates around the first rotating shaft 2, and the head support frame 4 rotates around the second rotating shaft 3. The neck support plate 5 supports the patient's neck. When it rotates to make the patient's trachea straight, the convex block rotating shaft 9 is pulled to be butted with the limiting groove 10. At this time, the rotation angle of the head support frame 4 is fixed. The opening ring 15 is placed in the patient's oral cavity to open the mandible. After using the tongue depressor 17 to press the tongue on the mandible, the tongue depressor 17 is inserted into the insertion slot 16. At this time, intubation can be carried out.

[0028] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A clinical anesthesia intubation assistance device, characterized in that, include: A bed connecting plate (1) is fixedly connected to the bed, and when the patient is on the bed, the shoulders of the patient are in contact with the bed connecting plate (1). A rotating shaft 1 (2) is detachably connected to the bed connecting plate (1) at a position close to the patient's head. A neck support mechanism, rotatably connected to the rotating shaft 1 (2), the neck support mechanism being used to support and fix the patient's neck at multiple angles; A second rotating shaft (3) is rotatably arranged on a side of the neck supporting mechanism away from the first rotating shaft (2), and a head supporting frame (4) is detachably connected to the second rotating shaft (3), and the head supporting frame (4) is used to fix the patient's head; A mouth opening mechanism is arranged above the head support frame (4), and is used to open the patient's mouth when the patient is intubated.

2. The clinical anesthesia intubation assistance device according to claim 1, wherein, The neck support mechanism comprises: A neck support plate (5), wherein the first rotating shaft (2) and the second rotating shaft (3) are both rotatably disposed on the neck support plate (5), and the neck support plate (5) is in contact with the patient's neck; Two equiangular deflection assemblies are provided, the equiangular deflection assemblies are rotatably arranged on the neck support plate (5), the two equiangular deflection assemblies are respectively arranged at two ends of the neck support plate (5) in opposite directions, and the equiangular deflection assemblies are used to control the rotation angle of the first rotating shaft (2) and the second rotating shaft (3) to be the same; Two gear sets are provided, the gear sets are provided on the neck support plate (5), and the two gear sets are respectively connected to the two ends of the rotating shaft 1 (2) in a transmission manner.

3. The clinical anesthesia intubation assistance device according to claim 2, wherein, The equiangular deflection assembly comprises: A worm gear (6) is rotatably connected to the neck support plate (5), and the worm gear (6) is transmission-connected to the gear set; A second worm gear (7) is rotatably connected to the neck support plate (5), and the second worm gear (7) is fixedly connected to the second rotating shaft (3); A worm wheel (8) is rotatably arranged in the neck support plate (5), the worm gear 1 (6) and the worm gear 2 (7) are both meshed with the worm wheel (8), and the worm gear 1 (6) is parallel to the worm gear 2 (7); A locking component is arranged on the neck support plate (5), the locking component is detachably connected to the worm gear (8), and the locking component is used to fix the rotation of the worm gear (8).

4. The clinical anesthesia intubation assistance device according to claim 3, wherein The locking component comprises: a lug shaft (9) rotatably and slidably disposed on the neck support plate (5), the lug shaft (9) passing through the center of the worm wheel (8), and the lug shaft (9) being slidably connected to the worm wheel (8); A limiting groove (10) is provided in the neck support plate (5), and the protruding block rotating shaft (9) is detachably connected to the limiting groove (10).

5. The clinical anesthesia intubation assistance device according to claim 4, characterized in that, The gear set comprises two T-shaped gears (11), the T-shaped gears (11) being rotatably arranged on the neck support plate (5), a large gear and a small gear being respectively arranged at both ends of the T-shaped gear (11), the large gears on the two T-shaped gears (11) being meshed with each other, and the small gears on the two T-shaped gears (11) being respectively transmission-connected with the rotating shaft 1 (2) and the worm gear 1 (6).

6. The clinical anesthesia intubation assistance device according to claim 5, wherein, When the worm wheel (8) rotates, the first worm (6) and the second worm (7) rotate in the same direction at the same speed, the first worm (6) and the first rotating shaft (2) rotate in the opposite direction at the same speed, and the first rotating shaft (2) and the second rotating shaft (3) rotate in the opposite direction at the same speed.

7. The clinical anesthesia intubation assistance device according to claim 6, wherein, A plurality of arc-shaped rods (12) are arranged on the head support frame (4), and the plurality of arc-shaped rods (12) are in contact with the patient's head. Elastic clamping jaws I (13) and elastic clamping jaws II (14) are arranged on the arc-shaped rods (12) on both sides of the head support frame (4). The elastic clamping jaws II (14) are arranged on one side of the arc-shaped rod (12) close to the neck support plate (5). Both the elastic clamping jaws I (13) and the elastic clamping jaws II (14) are made of elastic materials, and both the elastic clamping jaws I (13) and the elastic clamping jaws II (14) are bent towards the center of the head support frame (4).

8. The clinical anesthesia intubation assistance device according to claim 7, characterized in that, The elastic clamping jaws I (13) are fixedly connected to the arc-shaped rods (12), and the elastic clamping jaws II (14) are detachably connected to the arc-shaped rods (12). When the patient lies on their side, the elastic clamping jaws II (14) can be removed to expose the patient's mouth.

9. The clinical anesthesia intubation assistance device according to claim 8, wherein The mouth opening mechanism includes: A spreading ring (15) is arranged at the patient's mouth to spread the patient's upper jaw, lower jaw and cheeks. The position of the spreading ring (15) in contact with the inner part of the patient's oral cavity is made of an elastic material; A plug-in groove (16) is opened on one side of the spreading ring (15) close to the lower jaw; A tongue depressor (17) is detachably connected to the plug-in groove (16), and the tongue depressor (17) is used to press the patient's tongue.

10. The clinical anesthesia intubation assistance device according to claim 6, characterized in that, The included angle between the neck support plate (5) and the bed body connecting plate (1) is the same as the included angle between the neck support plate (5) and the head support frame (4).

Images