First-aid transfer bed

Abstract

The invention discloses a first-aid transfer bed which comprises a bed board, a head steering adjusting mechanism is arranged at one end of the bed board, storage buckets are arranged on the two sides of the head steering adjusting mechanism, the head steering adjusting mechanism comprises a base fixed to the bed board, and a left-right rotating body is rotationally arranged in the middle of the base. The left-right rotating body is driven by a left-right rotating motor in the base to swing left and right, a worm is transversely arranged in the left-right rotating body in the front-back direction, one end of the worm is connected with a front-back rotating motor, and a headrest assembly capable of swinging front and back is arranged on the upper side of the left-right rotating body. A worm gear meshed with the worm is installed at the lower end of the headrest assembly, and an inner concave part allowing the head to sink and be positioned is arranged on the upper side of the headrest assembly. The problems that an existing transfer bed depends on manual adjustment of the head posture, operation is inconvenient, and the fixing effect is poor can be solved.

Description

Technical Field

[0001] This invention relates to the field of emergency medical equipment technology, specifically an emergency transport bed. Background Technology

[0002] In the field of emergency medical care, emergency transport beds are indispensable equipment, mainly used to quickly and safely transfer patients from the scene, ward, examination room, and other scenarios to the target area. Their performance directly affects the efficiency of emergency care and the safety of patients during transport. Existing emergency transport beds typically consist of a bed board and moving parts (such as casters) located at the bottom of the bed board, which can only achieve basic load-bearing and movement functions and cannot meet the needs of precise adjustment of patient position in complex emergency scenarios.

[0003] During patient transport, the stability and precise adjustment of head posture are crucial for the effectiveness of emergency care. For example, for patients who are unconscious, have difficulty swallowing, or are post-operative, targeted adjustments to head posture are necessary: ​​keeping the head turned to one side can prevent aspiration of vomit into the airway, avoiding the risk of suffocation; keeping the head tilted up or down can inhibit inappropriate swallowing movements and reduce the risk of throat injury. However, most emergency transport beds on the market currently lack dedicated head fixation and posture adjustment mechanisms, and the above-mentioned head posture adjustments rely entirely on manual support by medical staff or the use of simple items such as towels and pillows for support and fixation.

[0004] This manual adjustment method has many drawbacks: on the one hand, medical staff need to maintain a supportive posture throughout the process, which increases their workload, especially in long-distance transport or multi-patient care scenarios, where it is difficult to maintain a stable head posture continuously; on the other hand, the fixation effect of manual padding is poor, and patients are prone to head displacement during transport, leading to loss of posture control, failing to effectively avoid risks such as aspiration and swallowing injury, and making it difficult to adapt to the physiological characteristics and emergency needs of different patients.

[0005] In view of the shortcomings of the existing technologies, there is an urgent need for an emergency transport bed with precise head posture adjustment and head stabilization functions. This would solve the problems of existing transport beds relying on manual head posture adjustment, inconvenient operation, and poor fixation, thus ensuring the safety of patients during transport and reducing the workload of medical staff. Summary of the Invention

[0006] This invention provides an emergency transport bed that solves the problems of existing transport beds that rely on manual adjustment of head position, are inconvenient to operate, and have poor fixation.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an emergency transport bed, comprising a bed board, a head-turning adjustment mechanism at one end of the bed board, storage buckets on both sides of the head-turning adjustment mechanism, the head-turning adjustment mechanism including a base fixed to the bed board, a left-right rotating main body rotatably disposed in the middle of the base, the left-right rotating main body being driven to swing left and right by a left-right rotating motor inside the base, a worm gear being transversely disposed inside the left-right rotating main body along the front-back direction, one end of the worm gear being connected to a front-back rotating motor, a headrest assembly capable of swinging back and forth being disposed on the upper side of the left-right rotating main body, and a device connected to the worm gear being mounted at the lower end of the headrest assembly. The headrest assembly features a meshing worm gear and an inner recess on its upper side for head positioning. A head-turning adjustment mechanism at one end of the bed board enables mechanical adjustment of the patient's head in two dimensions: left-right swaying and forward-backward tilting. This eliminates the need for manual support from medical staff, significantly reducing their workload. A left-right rotation motor drives the main body to swing, precisely controlling the head's left-right tilt angle and effectively preventing aspiration of vomit. A forward-backward rotation motor drives the headrest assembly to swing via a worm gear transmission, stabilizing head tilting and suppressing inappropriate swallowing movements. The inner recess of the headrest assembly allows the patient's head to naturally sink in and be positioned, preventing head displacement due to transport bumps and improving head stability.

[0008] Preferably, the headrest assembly includes a headrest base and a sponge pad installed on the upper side of the headrest base and matching the shape of the headrest base. The left and right sides of the headrest base are mounted on the upper edge of the left and right rotating main body via pivots. The sponge pad has good softness and cushioning, which can reduce the pressure on the head, conform to the physiological curve of the patient's head, and improve the comfort during transportation. The headrest base is mounted on the upper edge of the left and right rotating main body via pivots, providing a stable rotation support point for the headrest assembly and ensuring smooth and uninterrupted back-and-forth swinging.

[0009] Preferably, a worm gear mounting plate is installed on the lower side of the headrest base. The worm gear is semi-circularly positioned in the middle of the lower side of the worm gear mounting plate. The worm gear mounting plate achieves a stable connection between the worm gear and the headrest base, improving the reliability of the worm gear assembly and preventing the worm gear from shifting or loosening during transmission. The semi-circular worm gear is adapted to the meshing transmission requirements of the worm gear, enabling continuous adjustment of the back-and-forth swing of the headrest assembly. At the same time, the semi-circular structure can limit the swing stroke.

[0010] Preferably, the concave portion facing the bed board has a neck support protrusion, and the middle of the neck support protrusion has a neck limiting groove. The neck support protrusion can effectively support the patient's neck, avoid muscle fatigue or injury caused by the neck being suspended after the head is fixed, and optimize the force distribution between the head and neck. The neck limiting groove can fit the contour of the neck, further restrict neck displacement, and improve the overall head fixation effect.

[0011] Preferably, a drive flat shaft is installed on the main shaft of the left and right rotating motor. The drive flat shaft is inserted into a matching slot inside the left and right rotating body. The non-circular mating structure between the flat shaft and the slot can prevent relative slippage during transmission, ensuring that the motor power is efficiently transmitted to the left and right rotating body, improving the stability and accuracy of left and right swing adjustment. This connection method is easy to assemble, requires no additional fasteners, and is convenient for later inspection and maintenance.

[0012] Preferably, the storage bucket is connected to the bed board via a connecting shaft in the front-to-back direction. The bed board is equipped with a storage bucket swing motor connected to the connecting shaft, which can realize that when the head turning adjustment mechanism drives the head to turn, the corresponding storage bucket automatically tilts towards the head, allowing the patient's vomit to smoothly enter the storage bucket for collection.

[0013] Preferably, the base is equipped with a controller and a control panel. The controller is communicatively connected to the control panel, the left and right rotation motors, the front and back rotation motors, and the storage bucket swing motor, so as to realize centralized control of head orientation adjustment and storage bucket swing. Medical staff can intuitively operate each function through the control panel without adjusting each motor separately, simplifying the operation process and reducing the difficulty of operation. The controller can accurately control the motor speed and rotation angle to ensure the accuracy of head posture and storage bucket position adjustment.

[0014] Preferably, the storage bucket has a sloping surface on the side facing the head turning adjustment mechanism, so that the upper opening of the storage bucket can extend to the underside of the patient's head, preventing the patient's vomit from falling to the ground.

[0015] Preferably, the left and right rotating main body swings to the left and right at an angle not exceeding 45°, and the headrest assembly swings forward and backward at an angle not exceeding 30°, which conforms to the physiological range of human neck movement and can effectively prevent neck joint damage, muscle strain and other problems caused by excessive adjustment, thus providing safety protection for the patient's neck.

[0016] Preferably, the bed board is equipped with omnidirectional casters at all four feet, giving the transport bed flexible turning and moving capabilities, making it easy to adjust the direction of travel in narrow ward corridors, elevators, and ambulances.

[0017] Compared with the prior art, the beneficial effects of the present invention are: By incorporating a head-turning adjustment mechanism at one end of the bed board, the system enables mechanical adjustment of the patient's head in two dimensions: left-right swaying and forward-backward tilting. This eliminates the need for manual support from medical staff, significantly reducing their workload. The left-right rotation motor drives the main body to swing, precisely controlling the angle of head tilt and effectively preventing aspiration of vomit. The forward-backward rotation motor drives the headrest assembly to swing via a worm gear transmission, stabilizing and adjusting the head's tilting posture and suppressing inappropriate swallowing movements. The concave portion of the headrest assembly allows the patient's head to naturally sink in and be positioned, preventing head displacement due to transport bumps and improving head stability. This solves the problems of existing transport beds that rely on manual head posture adjustment, are inconvenient to operate, and have poor fixation effects. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front sectional view of the present invention; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 for Figure 2 BB-direction sectional view of the structure; Figure 5 This is an exploded perspective view of the head steering adjustment mechanism of the present invention. Figure 6 This is a schematic diagram illustrating the usage state of the present invention; Figure 7 This is a schematic diagram of the left-right swing of the head steering adjustment mechanism of the present invention; Figure 8 This is a schematic diagram of the forward and backward swing of the head steering adjustment mechanism of the present invention.

[0019] Figure label: 1. Bed board; 2. Head turning adjustment mechanism; 20. Base; 21. Sponge pad; 211. Concave part; 212. Neck support protrusion; 213. Neck limiting groove; 22. Headrest base; 23. Rotating shaft; 24. Worm gear mounting plate; 25. Front and rear rotation motor; 26. Worm; 27. Drive flat shaft; 28. Left and right rotation motor; 29. ​​Left and right rotation main body; 3. Universal rollers; 4. Storage bucket; 41. Angled part; 42. Connecting shaft; 5. Storage bucket swing motor; 6. Control panel. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] like Figure 1-8As shown, this invention provides a technical solution to address the problems of existing transport beds relying on manual adjustment of head posture, inconvenient operation, and poor fixation: an emergency transport bed, including a bed board 1, with a head turning adjustment mechanism 2 at one end of the bed board 1, and storage buckets 4 on both sides of the head turning adjustment mechanism 2. The head turning adjustment mechanism 2 includes a base 20 fixed to the bed board 1, and a left-right rotating main body 29 rotatably disposed in the middle of the base 20. The left-right rotating main body 29 is driven to swing left and right by a left-right rotating motor 28 inside the base 20. A worm gear 26 is horizontally arranged along the front-back direction inside the left-right rotating main body 29, and one end of the worm gear 26 is connected to a front-back rotating motor 25. A movable front-back rotating mechanism is provided on the upper side of the left-right rotating main body 29. The swinging headrest assembly has a worm gear 241 meshing with a worm 26 at its lower end and an indentation 211 on its upper side for the head to sink into and be positioned. By setting a head turning adjustment mechanism 2 at one end of the bed board, the mechanical drive adjustment of the patient's head in two dimensions—left and right swinging and forward and backward tilting—is realized, eliminating the need for manual support by medical staff and significantly reducing their workload. The left and right rotation motor 28 drives the left and right rotation main body to swing, which can precisely control the left and right tilting angle of the head and effectively prevent aspiration of vomit. The forward and backward rotation motor 25 drives the headrest assembly to swing through the worm gear transmission, which can stably adjust the head tilting and lowering posture and suppress inappropriate swallowing movements. The indentation of the headrest assembly allows the patient's head to sink in and be positioned naturally, avoiding head displacement caused by transport bumps and improving head fixation stability.

[0022] Specifically, the bed board 1 is made of high-strength aluminum alloy, with a length of 200cm and a width of 60cm. It has sufficient load-bearing capacity and is lightweight, making it easy to transport. All four legs of the bed board 1 are bolted with universal casters 3. These casters 3 are silent casters with electromagnetic brakes and a rated load capacity of no less than 150kg. The head-turning adjustment mechanism 2 is fixedly installed at the left end of the bed board 1, i.e., the end where the patient's head is placed. Its centerline coincides with the longitudinal centerline of the bed board 1, ensuring even pressure on the head.

[0023] The base 20 is a long strip shell structure with a hollow center. It is made of stainless steel and is fixed to the upper surface of the bed board 1 with bolts. The base 20 has a reserved mounting cavity for installing the left and right rotation motor 28. The left and right rotation motor 28 is a stepper motor with a rated power of 50W.

[0024] The left and right rotating main body 29 is a closed shell structure with an open top. The front and rear rotating motor 25 is also a 50W stepper motor, which is fixed on a mounting base on one side of the left and right rotating main body 29. Its main shaft is set horizontally and connected to one end of the worm gear 26 through a coupling. The worm gear 26 is arranged laterally in the left and right rotating main body 29 along the front and rear direction and is supported and fixed by two bearing seats. The lead of the worm gear 26 is 2mm to ensure transmission accuracy.

[0025] The left and right rotating main body 29 swings to the left and right at an angle not exceeding 45°, and the headrest assembly swings forward and backward at an angle not exceeding 30°, which conforms to the physiological range of human neck movement and can effectively prevent neck joint damage, muscle strain and other problems caused by excessive adjustment, thus providing safety protection for the patient's neck.

[0026] In this embodiment, the headrest assembly includes a headrest base 22 and a sponge pad 21 installed on the upper side of the headrest base 22 and matching its shape. The left and right sides of the headrest base 22 are supported on the upper edge of the left and right rotating main body 29 via pivots 23. The sponge pad has good softness and cushioning, which can reduce the pressure on the head, adapt to the physiological curve of the patient's head, and improve comfort during transportation. The headrest base is supported on the upper edge of the left and right rotating main body via pivots, providing a stable rotation support point for the headrest assembly and ensuring smooth and uninterrupted back-and-forth swinging. Specifically, the headrest base 22 is made of plastic and has an arc-shaped structure. The left and right sides are integrally formed with pivots 23, which can be embedded into the pivot grooves on the upper edge of the left and right rotating main body 29 for easy installation. The sponge pad 21 is made of medical-grade memory foam, with a thickness of 5cm, and its shape matches the headrest base 22. It is attached to the upper side of the headrest base 22 with Velcro, making it easy to remove, clean, and disinfect.

[0027] In this embodiment, a worm gear mounting plate 24 is installed on the lower side of the headrest base 22. The worm gear 241 is semi-circularly arranged in the lower middle of the worm gear mounting plate 24. The worm gear mounting plate achieves a stable connection between the worm gear and the headrest base, improving the reliability of the worm gear assembly and preventing the worm gear from shifting or loosening during transmission. The semi-circular worm gear adapts to the meshing transmission requirements of the worm, enabling continuous adjustment of the headrest assembly's back-and-forth swing. At the same time, the semi-circular structure limits the swing stroke. The worm gear mounting plate 24 is made of steel plate. The worm gear 241 has a semi-circular structure with a radius of 5cm and is fixed to the lower middle of the worm gear mounting plate 24 with bolts. The worm gear 241 meshes with the worm 26 to form a worm gear transmission mechanism. When the front and rear rotating motor 25 drives the worm 26 to rotate, the worm gear 241 drives the headrest assembly to swing back and forth around the rotating shaft 23, realizing the adjustment of the head tilt posture.

[0028] In this embodiment, a neck support protrusion 212 is provided at the other end of the concave portion 211 facing the bed board 1. A neck limiting groove 213 is provided in the middle of the neck support protrusion 212. The neck support protrusion can effectively support the patient's neck, avoid muscle fatigue or injury caused by the neck being suspended after the head is fixed, and optimize the force distribution between the head and neck. The neck limiting groove can fit the contour of the neck, further restrict neck displacement, and improve the overall head fixation effect. Specifically, the concave portion 211 has an arc-shaped structure.

[0029] In this embodiment, a drive flat shaft 27 is installed on the main shaft of the left and right rotating motor 28. The drive flat shaft 27 is inserted into a matching slot inside the left and right rotating body 29. The non-circular fit structure between the flat shaft and the slot can prevent relative slippage during transmission, ensuring that the motor power is efficiently transmitted to the left and right rotating body, improving the stability and accuracy of left and right swing adjustment. This connection method is easy to assemble, requires no additional fasteners, and facilitates later inspection and maintenance. Specifically, the drive flat shaft 27 has a cuboid structure. One end is connected to the main shaft of the left and right rotating motor 28 via a flat key, and the other end is inserted into a rectangular slot opened at the bottom of the left and right rotating body 29. The slot and the drive flat shaft 27 are clearance-fitted to ensure stable power transmission.

[0030] In this embodiment, the storage bucket 4 is connected to the bed board 1 via a connecting shaft 42 in the front-to-back direction. The bed board 1 is equipped with a storage bucket swing motor 5 connected to the connecting shaft 42, which can realize that when the head turning adjustment mechanism 2 drives the head to turn, the corresponding storage bucket 4 automatically deflects towards the head, so that the patient's vomit can be smoothly collected in the storage bucket 4. Specifically, the storage bucket swing motor 5 is a 30W stepper motor, which is fixed on the motor base on the lower surface of the bed board 1, and can drive the storage bucket 4 to swing around the connecting shaft 42 to achieve a rotation adjustment of 0-30°.

[0031] In this embodiment, a controller and a control panel 6 are installed on the base 20. The controller is communicatively connected to the control panel 6, the left and right rotation motor 28, the front and back rotation motor 25, and the storage bucket swing motor 5, realizing centralized control of head turning adjustment and storage bucket swing. Medical staff can intuitively operate each function through the control panel without adjusting each motor separately, simplifying the operation process and reducing the difficulty of operation. The controller can accurately control the motor speed and rotation angle to ensure the accuracy of head posture and storage bucket position adjustment. Specifically, the controller uses an STM32 series microcontroller. The control panel 6 is equipped with left and right turning buttons, front and back tilt buttons, and can also be equipped with adjustment buttons for front, back, left and right speed adjustment. Each button controls the corresponding motor action. At the same time, the panel is equipped with an LCD display screen to display the current head swing angle and motor working status in real time, which facilitates accurate operation by medical staff.

[0032] In this embodiment, the storage bucket 4 is provided with a sloping part 41 on the side facing the head turning adjustment mechanism 2, so that the upper opening of the storage bucket 4 can extend to the lower side of the patient's head, preventing the patient's vomit from falling to the ground.

[0033] The specific working process in this embodiment is as follows: When transporting a patient, first place the patient on the bed board 1, ensuring the patient's head is recessed in the concave part 211 of the sponge pad 21 and the neck is fitted against the neck restraint groove 213, thus achieving initial head fixation. Depending on the emergency needs, medical personnel can adjust the head position via the control panel 6: pressing the left / right turn button activates the controller, driving the left / right rotation motor 28, which in turn drives the left / right rotation body 29 to swing via the drive shaft 27, tilting the patient's head to the left or right, with a swing angle not exceeding 45°. The choice of left or right rotation depends on the patient's condition. If the patient's head is injured or it is inconvenient to turn to one side, the rotation can be controlled to the other side to prevent aspiration of vomit. Pressing the forward / backward tilt button activates the controller, driving the forward / backward rotation motor 25, which in turn drives the headrest assembly to swing via the worm gear 26 and worm wheel 241, adjusting the head's tilt position, with a swing angle not exceeding 30° to suppress inappropriate swallowing movements.

[0034] As the main body 29 swings left and right, the storage bucket swing motor 5 drives the corresponding storage bucket 4 to rotate towards the patient, so that the patient can vomit smoothly into the storage bucket 4 when vomiting.

[0035] This embodiment, through the above structural design, achieves precise, automatic adjustment and stable fixation of the patient's head posture, eliminating the need for manual support by medical staff, thus reducing their workload. At the same time, it optimizes the storage layout, improves emergency response efficiency, and ensures that each mechanism is reliable and easy to operate, meeting the usage requirements of medical emergency scenarios and effectively solving the technical defects of existing emergency transport beds.

[0036] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0037] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. An emergency transport bed, comprising a bed board (1), characterized in that, The bed board (1) is provided with a head turning adjustment mechanism (2) at one end, and storage buckets (4) are provided on both sides of the head turning adjustment mechanism (2). The head turning adjustment mechanism (2) includes a base (20) fixed on the bed board (1). A left and right rotating body (29) is rotatably provided in the middle of the base (20). The left and right rotating body (29) is driven to swing left and right by a left and right rotating motor (28) inside the base (20). A worm gear (26) is arranged horizontally along the front and back direction inside the left and right rotating body (29). One end of the worm gear (26) is connected to a front and back rotating motor (25). A headrest assembly that can swing back and forth is provided on the upper side of the left and right rotating body (29). A worm wheel (241) that meshes with the worm gear (26) is installed at the lower end of the headrest assembly. An indentation (211) for the head to sink into and be positioned is provided on the upper side of the headrest assembly.

2. The emergency transport bed according to claim 1, characterized in that: The headrest assembly includes a headrest base (22) and a sponge pad (21) installed on the upper side of the headrest base (22) and matching the shape of the headrest base (22). The left and right sides of the headrest base (22) are mounted on the upper edge of the left and right rotating body (29) via a pivot (23).

3. The emergency transport bed according to claim 2, characterized in that: The headrest base (22) is equipped with a worm gear mounting plate (24) on its lower side, and the worm gear (241) is semi-circularly arranged in the middle of the lower side of the worm gear mounting plate (24).

4. The emergency transport bed according to claim 1, characterized in that: The concave portion (211) is provided with a neck support protrusion (212) at the other end facing the bed board (1), and a neck limiting groove (213) is provided in the middle of the neck support protrusion (212).

5. The emergency transport bed according to claim 1, characterized in that: A drive flat shaft (27) is installed on the main shaft of the left and right rotating motor (28), and the drive flat shaft (27) is inserted into a matching slot inside the left and right rotating body (29).

6. The emergency transport bed according to claim 1, characterized in that: The storage bucket (4) is connected to the bed board (1) via a connecting shaft (42) in the front-to-back direction. The bed board (1) is equipped with a storage bucket swing motor (5) connected to the connecting shaft (42).

7. The emergency transport bed according to claim 6, characterized in that: The base (20) is equipped with a controller and a control panel (6). The controller is connected to the control panel (6), the left and right rotating motor (28), the front and back rotating motor (25), and the storage bucket swing motor (5).

8. The emergency transport bed according to claim 6, characterized in that: The storage bucket (4) has a sloping part (41) on the side facing the head turning adjustment mechanism (2).

9. The emergency transport bed according to any one of claims 1-8, characterized in that: The left and right rotating main body (29) swings to the left and right at an angle not exceeding 45°, and the headrest assembly swings forward and backward at an angle not exceeding 30°.

10. The emergency transport bed according to claim 9, characterized in that: The four legs of the bed board (1) are equipped with casters (3).

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