Anti-rollover medical stretcher for oral and maxillofacial trauma emergency treatment and use method thereof

Abstract

The invention discloses an anti-rollover medical stretcher for oral and maxillofacial trauma emergency treatment and a using method thereof.The anti-rollover medical stretcher comprises a stretcher body, a plane bearing assembly arranged on the stretcher body, side blocking assemblies arranged on the stretcher body and located on the two sides of the plane bearing assembly, and a dynamic gravity center adjusting assembly arranged on the stretcher body; the dynamic gravity center adjusting assembly is arranged on the stretcher body and used for dynamically adjusting the gravity center state of the medical stretcher so that the medical stretcher can be kept stable, the electric control module is arranged on the stretcher body and connected with the dynamic gravity center adjusting assembly, and an integrated forming structure is adopted, so that the structural strength is improved, and rollover caused by frame deformation is effectively avoided; the side blocking supports and the multi-point binding belts form double anti-sideslip protection, the offset of the body of a patient is reduced, the gravity center change is monitored in real time through the pressure sensor, the electric control module automatically controls the balance weight assembly to move, and the risk of rollover of the stretcher is effectively reduced.

Description

Technical Field

[0001] This invention belongs to the field of medical stretcher technology, specifically relating to a medical stretcher for preventing rollover in emergency treatment of oral and maxillofacial trauma and its usage method. Background Technology

[0002] The oral and maxillofacial region has a complex anatomy and rich blood supply, making it unique in the emergency transport of trauma patients. Medical stretchers, as a medical tool for patient transport, are widely used in emergency medical care and routine clinical practice. However, existing medical stretchers have significant shortcomings when transporting patients with oral and maxillofacial trauma, mainly in the following aspects:

[0003] 1. Positioning restrictions and the risk of tipping over: Patients with oral and maxillofacial trauma often have bleeding from the mouth and nose, tooth loss, or tissue displacement. To prevent blood, saliva, or foreign objects from being aspirated into the airway and causing suffocation, clinical guidelines require that the patient be kept in a lateral decubitus position or a drainage position with the head turned to one side. However, this asymmetrical position will cause the stretcher's center of gravity to be seriously tilted to one side, which can easily cause the stretcher to tip over during emergency transport or on bumpy roads, resulting in secondary injuries.

[0004] 2. Lack of dynamic balance mechanism: Existing ordinary stretchers cannot detect the changes in the center of gravity of the injured person due to the airway protection position. When medical staff perform oral suction or airway clearance on the injured person during the transport, it will further aggravate the instability of the center of gravity.

[0005] 3. The effect of vibration on fractures: Maxillofacial bone fractures (such as maxillary and mandibular fractures) are extremely sensitive to vibration. Ordinary stretchers are not rigid enough and are prone to tortuous deformation, which increases the risk of severe pain for the injured and displacement of the fracture ends.

[0006] Therefore, we propose an anti-rollover medical stretcher for emergency treatment of oral and maxillofacial trauma and its usage method, which utilizes its dynamic center of gravity adjustment function to ensure the safe transport of the injured in the lateral drainage position. Summary of the Invention

[0007] The purpose of this invention is to provide a medical stretcher for preventing rollover in emergency treatment of oral and maxillofacial trauma and its method of use, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a medical stretcher for preventing rollover in emergency treatment of oral and maxillofacial trauma, comprising:

[0009] Stretcher body;

[0010] A planar load-bearing component is disposed on the stretcher body;

[0011] Side guard components are disposed on the stretcher body on both sides of the planar load-bearing component;

[0012] A dynamic center of gravity adjustment component is provided on the stretcher body to dynamically adjust the center of gravity of the medical stretcher so that the medical stretcher remains stable.

[0013] An electronic control module is mounted on the stretcher body and is connected to the dynamic center of gravity adjustment component.

[0014] Preferably, the stretcher body includes a rectangular main frame, a reinforcing crossbeam, supporting legs, and handles;

[0015] The reinforcing crossbeams are provided in a plurality of form, and the plurality of reinforcing crossbeams are arranged at equal intervals within the rectangular main frame;

[0016] The support legs are provided in two parts, and the two support legs are symmetrically arranged on both sides of the bottom of the rectangular main frame;

[0017] The rectangular main frame has symmetrically distributed grips at both ends, and the grips are covered with anti-slip rubber sleeves.

[0018] Preferably, the planar load-bearing component includes a panel, a load-bearing sub-panel, and a cushion;

[0019] Triangular fixing blocks are provided at the included angle between the rectangular main frame and the reinforcing crossbeam, and the insert is provided between the rectangular main frame and the reinforcing crossbeam through the triangular fixing blocks;

[0020] The reinforcing crossbeam has equally spaced slots, and there are several load-bearing plates. Each load-bearing plate has a locking post at its bottom that engages with the slot. The load-bearing plates are equally spaced on the rectangular main frame and the insert plate.

[0021] The soft pad is disposed on the bearing plate.

[0022] Preferably, the upper surfaces of the panel, the rectangular main frame, and the reinforcing crossbeam are flush.

[0023] Preferably, the side guard assembly includes a side guard bracket and a restraint strap;

[0024] Two side guard brackets are provided, and the two side guard brackets are set on the rectangular main frame on the outside of the soft pad and the bearing plate. Three restraint straps are connected between the two side guard brackets by buckles.

[0025] Preferably, one of the restraint straps is located in the upper middle part of the side guard bracket, and the other two restraint straps are located in the lower middle part of the side guard bracket.

[0026] Preferably, the rectangular main frame, the reinforcing crossbeam, the supporting legs, the grip rod, and the side guard bracket are integrally formed.

[0027] Preferably, the dynamic center of gravity adjustment assembly includes a guide slide, a slider, a synchronization plate, a counterweight rod, a counterweight block, a counterweight nut, a forward and reverse motor, a drive threaded rod, a threaded bearing seat, and a fixed bearing seat;

[0028] The guide slide rods are provided in a plurality of them, and the plurality of guide slide rods are equally spaced between the two support legs. Each guide slide rod is provided with a slider, and adjacent sliders are connected by the synchronization plate.

[0029] The bottom of the slider is provided with a counterweight rod, and a plurality of counterweight blocks are provided on the counterweight rod through the counterweight nut;

[0030] The forward and reverse motor is located at the bottom of the rectangular main frame corresponding to the position of the synchronization plate. The output end of the forward and reverse motor is connected to the drive threaded rod. The other end of the drive threaded rod is located at the bottom of the rectangular main frame through the fixed bearing seat. The threaded bearing seat is located on the synchronization plate corresponding to the position of the drive threaded rod. The drive threaded rod and the threaded bearing seat are threadedly connected.

[0031] Preferably, the electronic control module is a control terminal with a built-in battery module, and a pressure sensor that contacts the card post is provided in the card slot. The pressure sensor and the forward and reverse motor are both connected to the electronic control module.

[0032] A method for using a medical stretcher to prevent rollover in emergency treatment of oral and maxillofacial trauma includes the following steps:

[0033] A. Stretcher preparation and initialization:

[0034] Stretcher structure inspection: Confirm that the rectangular main frame, reinforcing beams, and support legs of the stretcher are integrally formed and without deformation; check whether the anti-slip rubber sleeves on the handles are intact and fit properly to prevent slippage during handling;

[0035] Load-bearing component installation: Insert several load-bearing sub-plates into the corresponding slots of the reinforcing crossbeam using the bottom locking posts, ensuring good contact between the locking posts and the pressure sensors in the slots; after confirming that the upper surfaces of the inserts, rectangular main frame and reinforcing crossbeam are flush, lay the soft pads flat on the load-bearing sub-plates;

[0036] Initialization of the electronic control and center of gravity components: Turn on the electronic control module and check the connection status of the pressure sensor and the forward and reverse motors; adjust the dynamic center of gravity adjustment components, and control the forward and reverse motors to drive the threaded rod through the electronic control module, so that the synchronous plate drives the slider and the counterweight rod to move to the central axis of the stretcher. Then, fix the counterweight block in the middle position of the counterweight rod through the counterweight nut to complete the center of gravity reset.

[0037] B. Fixed restraint:

[0038] Two operators hold the handles at both ends of the rectangular main frame and place the stretcher steadily on the horizontal ground, ensuring that the supporting legs are in full contact with the ground to ensure stability.

[0039] Then assist the patient to lie down in the center of the soft cushion, ensuring that the patient's center of gravity is aligned with the middle of the stretcher. Connect the three restraint straps of the side guard assembly to the two side guard supports with buckles. The upper middle restraint strap should be wrapped around the patient's waist, and the two lower middle restraint straps should be wrapped around the patient's thighs and calves respectively. The tightness should be such that one finger can be inserted, avoiding excessive tightness that may affect blood circulation.

[0040] C. Manual handling:

[0041] Two to four operators hold the handles at both ends and sides of the stretcher, with their hands in contact with the anti-slip rubber sleeves to ensure balanced force application. During the transport, the electronic control module receives real-time data on the pressure distribution of the load-bearing plates from the pressure sensor. When the pressure difference on one side exceeds the preset value, the electronic control module automatically starts the forward and reverse motors. Through the threaded engagement between the threaded rod and the threaded bearing seat, the synchronous plate and slider move along the guide rod, causing the counterweight on the counterweight rod to slide towards the side with less pressure until the stretcher's center of gravity returns to stability. If encountering an inclined section, the side support can prevent the patient from sliding to the side, and the center of gravity adjustment component can further adjust and stabilize the stretcher.

[0042] D. Ambulance transfer:

[0043] Push the stretcher into the stretcher compartment of the ambulance. After positioning it with the support legs, use the ambulance's matching fixing device to lock the edges of the rectangular main frame to prevent the stretcher from shifting during vehicle movement. During vehicle movement, continuously monitor the pressure sensor data and center of gravity position through the electronic control module. If the center of gravity shifts due to bumps, the dynamic center of gravity adjustment component will automatically make fine adjustments. If temporary care is needed for the patient, the restraint straps at the corresponding positions can be loosened.

[0044] E. Storage and Placement:

[0045] After placing the stretcher stably, loosen the three restraint straps, assist the patient to leave the stretcher, remove the padding for cleaning, remove the load-bearing plates one by one from the slots and store them separately from the inserts, control the forward and reverse motors through the electronic control module to return the counterweight to the middle of the stretcher, turn off the power to the electronic control module, and move it to a dry and ventilated place for storage.

[0046] Compared with the prior art, the beneficial effects of the present invention are:

[0047] 1. Ensuring the stability of the airway's safe positioning: Addressing the need for patients with oral and maxillofacial trauma to maintain a lateral decubitus drainage position, this invention uses pressure sensors to monitor real-time changes in the center of gravity caused by lateral displacement. The electronic control module automatically controls the counterweight assembly to move in the opposite direction for balance. This ensures that even when the patient remains in a lateral decubitus position for an extended period (to prevent aspiration and suffocation), the stretcher remains horizontal and stable, resolving the conflict between positioning for drainage and maintaining balance.

[0048] 2. Reduce vibration and pain from maxillofacial fractures: The main body of the stretcher adopts an integrated molding structure, combined with reinforced crossbeams and supporting legs, resulting in high overall torsional rigidity. When transporting patients with jaw fractures, it can effectively reduce vibration caused by frame deformation. Combined with the cushioning effect of soft padding, it significantly reduces facial pain and the risk of fracture dislocation.

[0049] 3. Adapting to center of gravity fluctuations caused by emergency procedures: During transport, medical personnel often need to perform oral negative pressure suction or compression to stop bleeding in the injured. These procedures can lead to sudden changes in unilateral weight-bearing. The dynamic center of gravity adjustment component of this invention has a response time of ≤0.5s, which can instantly counteract the shaking caused by the operation and provide a stable operating platform for medical personnel.

[0050] 4. Flexible restraint and avoidance: The restraint straps of the side guard assembly are adjustable to avoid the neck and submandibular region, preventing airway compression or aggravation of neck injury. At the same time, the side guard bracket provides a physical anti-fall barrier for head tilt. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0052] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0053] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0054] Figure 4 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0055] Figure 5 This is a side sectional view of the present invention.

[0056] Figure 6 This is a partial three-dimensional structural schematic diagram of the present invention;

[0057] Figure 7 This is a three-dimensional structural diagram of the load-bearing plate of the present invention.

[0058] In the diagram: 1. Stretcher body; 101. Rectangular main frame; 102. Reinforcing crossbeam; 103. Support legs; 104. Handles; 105. Anti-slip rubber sleeves; 106. Slots; 2. Planar load-bearing assembly; 201. Panel; 202. Load-bearing sub-plate; 203. Pad; 204. Triangular fixing block; 205. Locking post; 3. Side guard assembly; 301. Side guard bracket; 302. Restraint straps; 4. Dynamic center of gravity adjustment assembly; 401. Guide slide rod; 402. Slider; 403. Synchronization plate; 404. Counterweight rod; 405. Counterweight block; 406. Counterweight nut; 407. Forward and reverse motor; 408. Drive threaded rod; 409. Threaded bearing seat; 410. Fixed bearing seat; 5. Electrical control module; 6. Pressure sensor. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Please see Figures 1-7 The present invention provides a medical stretcher for preventing rollover in emergency treatment of oral and maxillofacial trauma, comprising:

[0061] The main body of the stretcher 1 includes a rectangular main frame 101, a reinforcing crossbeam 102, a support leg 103, and a handle 104. Several reinforcing crossbeams 102 are provided and are evenly distributed within the rectangular main frame 101. Two support legs 103 are provided and are symmetrically fixed to the bottom sides of the rectangular main frame 101. The rectangular main frame 101 has symmetrically distributed handles 104 at both ends. Anti-slip rubber sleeves 105 are fitted on the handles 104. The rectangular main frame 101, reinforcing crossbeam 102, support leg 103, handles 104, and side support bracket 301 are integrally formed structures, and the materials are medical-grade high-strength aluminum alloy or carbon fiber composite materials.

[0062] The integrated molding structure significantly improves the overall torsional stiffness and structural stability of the stretcher, avoiding the problems of loosening and deformation caused by split frames. The reinforced crossbeam 102 enhances the load-bearing strength of the rectangular main frame 101, ensuring that the stretcher's load-bearing capacity is ≥180kg. The support legs 103 ensure that the stretcher is placed stably on the ground to prevent tipping. The handles 104 and anti-slip rubber sleeves 105 work together to facilitate the operator's application of force, prevent hand slippage during handling, and improve operational safety.

[0063] The planar load-bearing component 2 includes a panel 201, a load-bearing sub-panel 202, and a cushion 203. Triangular fixing blocks 204 are provided at the angle between the rectangular main frame 101 and the reinforcing crossbeam 102, and the panel 201 is installed between them via the triangular fixing blocks 204. The reinforcing crossbeam 102 has equally spaced slots 106, and the bottom of the load-bearing sub-panel 202 has locking posts 205 that engage with the slots 106. Several load-bearing sub-panels 202 are laid at equal intervals on the rectangular main frame 101 and the panel 201. The cushion 203 is laid flat on the load-bearing sub-panel 202, and the upper surfaces of the panel 201, the rectangular main frame 101, and the reinforcing crossbeam 102 are flush. The cushion 203 is made of an easy-to-clean material, suitable for oral trauma with excessive bleeding and saliva, facilitating timely wiping and preventing blood staining.

[0064] The triangular fixing block 204 enhances the installation stability of the panel 201 and prevents the panel from shifting when bearing load. The load-bearing sub-panel 202 achieves quick disassembly and position adjustment through the snap-fit ​​structure of the snap-fit ​​post 205 and the snap-fit ​​groove 106. The number of sub-panels or the laying range can be increased or decreased according to the patient's body size, such as children or adults, to improve load-bearing adaptability. The flush structure of the upper end surface ensures that the body is evenly stressed when the patient is lying down, avoiding local pressure. The soft pad 203 is made of medical-grade memory foam material to improve the comfort of the patient during transportation and at the same time play a certain cushioning role.

[0065] The side guard assembly 3 includes a side guard bracket 301 and a restraint strap 302; two side guard brackets 301 are symmetrically installed on the rectangular main frame 101, located outside the soft pad 203 and the load-bearing plate 202; three restraint straps 302 are connected between the two side guard brackets 301 by buckles, one of which is located in the upper middle part of the side guard bracket 301, and the other two are located in the lower middle part;

[0066] The side support bracket 301 forms a physical barrier to prevent the patient from sliding to the sides when the stretcher is tilted or bumpy. The three restraint straps 302 correspond to the patient's waist, thighs, and calves respectively, achieving multi-point fixation and preventing the patient's body from shifting and causing a loss of balance. The snap-on connection facilitates quick fastening and unlocking, meeting the needs of efficient operation in emergency scenarios. The tightness is adjustable to avoid excessive tightness affecting the patient's blood circulation. The height design of the side support bracket 301 not only prevents side slipping but can also serve as a temporary support point when the patient's head is turned to one side (requires the use of a soft pillow) to help maintain an open airway position.

[0067] The dynamic center of gravity adjustment assembly 4 includes a guide slide rod 401, a slider 402, a synchronization plate 403, a counterweight rod 404, a counterweight block 405, a counterweight nut 406, a forward and reverse motor 407, a drive threaded rod 408, a threaded bearing seat 409, and a fixed bearing seat 410; several guide slide rods 401 are equally spaced between two support legs 103, and a slider 402 is sleeved on each guide slide rod 401. Adjacent sliders 402 are connected by the synchronization plate 403; the bottom of the slider 402... A fixed counterweight rod 404 is provided, and several counterweight blocks 405 are installed on the counterweight rod 404 by counterweight nuts 406; a forward and reverse motor 407 is fixed at the bottom of the rectangular main frame 101 at the position corresponding to the synchronous plate 403, and the output end is connected to the drive threaded rod 408. The other end of the drive threaded rod 408 is installed at the bottom of the rectangular main frame 101 by a fixed bearing seat 410. A threaded bearing seat 409 is provided at the corresponding position on the synchronous plate 403, and the drive threaded rod 408 is threadedly driven to the threaded bearing seat 409.

[0068] The guide rod 401 cooperates with the slider 402 to provide stable guidance for the movement of the counterweight assembly. The synchronization plate 403 ensures that multiple sliders 402 move synchronously to prevent the counterweight rod 404 from deviating. The forward and reverse motor 407 drives the drive threaded rod 408 to rotate, which is converted into linear motion of the synchronization plate 403 through the threaded bearing seat 409. This, in turn, drives the counterweight block 405 to move along the width of the stretcher. The position adjustment of the counterweight block 405 can balance the load on one side of the stretcher in real time, correct the center of gravity deviation, and fundamentally reduce the risk of tipping over. The counterweight nut 406 makes it easy to increase or decrease the number of counterweight blocks 405 according to the actual load requirements, improving the adjustment flexibility.

[0069] The electronic control module 5 is the control terminal of the built-in battery module. The card slot 106 is equipped with a pressure sensor 6 that contacts the card post 205. The pressure sensor 6 and the forward and reverse motor 407 are both electrically connected to the electronic control module 5.

[0070] The built-in battery module provides continuous power for ≥8 hours, meeting the needs of long-term transport. The pressure sensor 6 collects pressure distribution data of the bearing plate 202 in real time, accurately identifying changes in the patient's center of gravity and unilateral weight-bearing. The electronic control module 5 receives signals from the pressure sensor 6. When it detects that the unilateral pressure difference exceeds a preset value, such as 10%, it automatically controls the forward and reverse motor 407 to start, driving the counterweight component to move and adjust the center of gravity, realizing intelligent and automated anti-tipping control without manual intervention, improving transport efficiency and safety.

[0071] This invention provides a method for using a medical stretcher to prevent rollover in emergency treatment of oral and maxillofacial trauma, comprising the following steps:

[0072] A. Stretcher preparation and initialization:

[0073] Stretcher structure inspection: Confirm that the rectangular main frame 101, reinforcing crossbeam 102, and support legs 103 of the main body 1 of the stretcher are integrally formed and without deformation; check whether the anti-slip rubber sleeves 105 on the handles 104 are intact and properly fitted to prevent slippage during handling.

[0074] Load-bearing component installation: Insert several load-bearing sub-plates 202 into the slots 106 of the reinforcing crossbeam 102 via the bottom locking posts 205, ensuring good contact between the locking posts and the pressure sensor 6 in the slots; after confirming that the upper surfaces of the insert plate 201, the rectangular main frame 101 and the reinforcing crossbeam 102 are flush, lay the soft pad 203 flat on the load-bearing sub-plates 202.

[0075] Initialization of the electronic control and center of gravity components: Turn on the electronic control module 5 and check the connection status of the pressure sensor 6 and the forward and reverse motor 407; adjust the dynamic center of gravity adjustment component 4, and control the forward and reverse motor 407 through the electronic control module to drive the drive threaded rod 408, so that the synchronous plate 403 drives the slider 402 and the counterweight rod 404 to move to the central axis of the stretcher, and then fix the counterweight block 405 in the middle position of the counterweight rod 404 through the counterweight nut 406 to complete the center of gravity reset;

[0076] B. Body position fixation and airway inclusion:

[0077] Two operators hold the handles 104 at both ends of the rectangular main frame 101 and place the stretcher steadily on the horizontal ground, with the supporting legs 103 fully in contact with the ground to ensure stability.

[0078] Then assist the patient with oral and maxillofacial trauma to lie down in the center of the soft pad 203, ensuring that the patient's center of gravity is aligned with the middle of the stretcher. Depending on the patient's condition, if there is active bleeding or risk of aspiration, place the patient in a lateral decubitus position or turn their head to one side.

[0079] Restraint and fixation: Connect the three restraint straps 302 of the side block assembly 3 to the two side block brackets 301 through buckles. Adjust the position of the upper and middle restraint straps to avoid the fracture area of ​​the patient's neck and mandible, and fix them to the chest and abdomen. Ensure that the restraint is tight but leave a gap of 1 finger, so as to prevent lateral slippage and not affect breathing. The lower and middle restraint straps fix the lower limbs. The upper and middle restraint straps are wrapped around the patient's waist, and the two lower and middle restraint straps are wrapped around the patient's thighs and calves respectively. The tightness should be such that 1 finger can be inserted, so as to avoid being too tight and affecting blood circulation.

[0080] C. Manual handling and dynamic equilibrium:

[0081] Two to four operators hold the handles 104 at both ends and sides of the stretcher, with their hands in contact with the anti-slip rubber sleeves 105 to ensure balanced force application. During transport, due to the injured person's side-lying or head-turned position, the pressure distribution on the load-bearing plate 202 shows a significant unilateral imbalance. The electronic control module 5 receives real-time pressure distribution data of the load-bearing plate collected by the pressure sensor 6. When it detects a continuous unidirectional pressure difference (caused by the side-lying position) exceeding the preset value, the electronic control module automatically starts the forward and reverse motor 407, which drives the threaded rod 408 and the threaded bearing. The threaded engagement of seat 409 drives the synchronous plate 403 and slider 402 to move along guide slide rod 401, thereby causing the counterweight block 405 on counterweight rod 404 to slide towards the side with less pressure until the stretcher's center of gravity returns to stability. If encountering a sloping section, the side support bracket 301 can prevent the patient from sliding sideways, and further adjust the stability in conjunction with the center of gravity adjustment component; the torque generated by the counterweight block 405 counteracts the overturning torque generated by the patient's side-lying position, so that while maintaining the patient's airway drainage position, the overall center of gravity of the stretcher is on the central axis, preventing side-tipping during transport and running;

[0082] D. Ambulance transfer:

[0083] After the stretcher is pushed into the stretcher compartment of the ambulance and positioned by the support leg 103, the edges of the rectangular main frame 101 are locked using the ambulance's matching fixing device to prevent the stretcher from shifting during vehicle movement. During vehicle movement, the pressure sensor data and center of gravity position are continuously monitored by the electronic control module 5. If medical personnel need to perform oral suctioning or airway clearance, it may cause temporary fluctuations in the center of gravity. The dynamic center of gravity adjustment component 4 will continuously make fine adjustments to maintain platform stability. If tracheal intubation or maxillofacial pressure bandaging is required, the upper and middle restraint straps 302 can be temporarily loosened, and the side support brackets 301 can be used to prevent the injured person from falling.

[0084] E. Storage and Placement:

[0085] After placing the stretcher stably, untie the three restraint straps 302, assist the patient to leave the stretcher, remove the soft pad 203 for cleaning, remove the bearing plates 202 one by one from the slots 106 and store them separately from the inserts 201, control the forward and reverse motors 407 through the electronic control module to return the counterweight 405 to the middle of the stretcher, turn off the power of the electronic control module, perform terminal disinfection treatment on the soft pads 203 and bearing plates 202 for bloodstains, and then move them to a dry and ventilated place for storage.

[0086] The beneficial effects of this invention are as follows:

[0087] 1. Ensuring the stability of the airway's safe positioning: Addressing the need for patients with oral and maxillofacial trauma to maintain a lateral decubitus drainage position, this invention uses pressure sensors to monitor real-time changes in the center of gravity caused by lateral displacement. The electronic control module automatically controls the counterweight assembly to move in the opposite direction for balance. This ensures that even when the patient remains in a lateral decubitus position for an extended period (to prevent aspiration and suffocation), the stretcher remains horizontal and stable, resolving the conflict between positioning for drainage and maintaining balance.

[0088] 2. Reduce vibration and pain from maxillofacial fractures: The main body of the stretcher adopts an integrated molding structure, combined with reinforced crossbeams and supporting legs, resulting in high overall torsional rigidity. When transporting patients with jaw fractures, it can effectively reduce vibration caused by frame deformation. Combined with the cushioning effect of soft padding, it significantly reduces facial pain and the risk of fracture dislocation.

[0089] 3. Adapting to center of gravity fluctuations caused by emergency procedures: During transport, medical personnel often need to perform oral negative pressure suction or compression to stop bleeding in the injured. These procedures can lead to sudden changes in unilateral weight-bearing. The dynamic center of gravity adjustment component of this invention has a response time of ≤0.5s, which can instantly counteract the shaking caused by the operation and provide a stable operating platform for medical personnel.

[0090] 4. Flexible restraint and avoidance: The restraint straps of the side guard assembly are adjustable to avoid the neck and submandibular region, preventing airway compression or aggravation of neck injury. At the same time, the side guard bracket provides a physical anti-fall barrier for head tilt.

[0091] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A medical stretcher for oral and maxillofacial trauma emergency that prevents rolling over, characterized in that, include: Stretcher body (1); A planar load-bearing component (2) is disposed on the stretcher body (1); Side guard assembly (3), the side guard assembly (3) is disposed on the stretcher body (1) on both sides of the planar bearing assembly (2); Dynamic center of gravity adjustment component (4), which is set on the stretcher body (1) to dynamically adjust the center of gravity of the medical stretcher so that the medical stretcher remains stable; An electric control module (5) is installed on the stretcher body (1) and is connected to the dynamic center of gravity adjustment component (4).

2. The anti-rollover medical stretcher for oral and maxillofacial trauma first aid according to claim 1, characterized in that: The main body of the stretcher (1) includes a rectangular main frame (101), a reinforcing crossbeam (102), a support leg (103), and a handle (104). The reinforcing crossbeams (102) are provided in a plurality of them, and the plurality of reinforcing crossbeams (102) are arranged at equal intervals within the rectangular main frame (101); Two support legs (103) are provided, and the two support legs (103) are symmetrically arranged on both sides of the bottom of the rectangular main frame (101); The rectangular main frame (101) has symmetrically distributed grips (104) at both ends, and the grips (104) are fitted with anti-slip rubber sleeves (105).

3. The anti-rollover medical stretcher for oral and maxillofacial trauma first aid according to claim 2, characterized in that: The planar load-bearing component (2) includes a panel (201), a load-bearing sub-panel (202), and a cushion (203). Triangular fixing blocks (204) are provided at the included angle between the rectangular main frame (101) and the reinforcing crossbeam (102), and the panel (201) is provided between the rectangular main frame (101) and the reinforcing crossbeam (102) through the triangular fixing blocks (204). The reinforcing beam (102) is provided with equally spaced slots (106), and there are several load-bearing plates (202). Each load-bearing plate (202) has a bottom post (205) that engages with the slot (106). Several load-bearing plates (202) are equally spaced on the rectangular main frame (101) and the panel (201). The cushion (203) is disposed on the bearing plate (202).

4. The anti-rollover medical stretcher for oral and maxillofacial trauma first aid according to claim 3, characterized in that: The upper surfaces of the panel (201), the rectangular main frame (101), and the reinforcing crossbeam (102) are flush.

5. The anti-rollover medical stretcher for oral and maxillofacial trauma first aid according to claim 3, characterized in that: The side guard assembly (3) includes a side guard bracket (301) and a restraint strap (302). Two side guard brackets (301) are provided. The two side guard brackets (301) are located on the rectangular main frame (101) on the outside of the soft pad (203) and the bearing plate (202). The two side guard brackets (301) are connected by three binding straps (302) through buckles.

6. The anti-rollover medical stretcher for oral and maxillofacial trauma first aid according to claim 5, characterized in that: One of the restraint straps (302) is located in the upper middle part of the side guard bracket (301), and the other two restraint straps (302) are located in the lower middle part of the side guard bracket (301).

7. A medical stretcher for preventing rollover in emergency treatment of oral and maxillofacial trauma according to claim 5, characterized in that: The rectangular main frame (101), the reinforcing crossbeam (102), the supporting leg (103), the grip bar (104), and the side guard bracket (301) are integrally formed structures.

8. A medical stretcher for preventing rollover in emergency treatment of oral and maxillofacial trauma according to claim 3, characterized in that: The dynamic center of gravity adjustment assembly (4) includes a guide slide (401), a slider (402), a synchronization plate (403), a counterweight rod (404), a counterweight block (405), a counterweight nut (406), a forward and reverse motor (407), a drive threaded rod (408), a threaded bearing seat (409), and a fixed bearing seat (410). The guide slide rod (401) is provided in a plurality of them, and the plurality of guide slide rods (401) are equally spaced between the two support legs (103). Each guide slide rod (401) is provided with a slider (402), and adjacent sliders (402) are connected by the synchronization plate (403). The bottom of the slider (402) is provided with a counterweight rod (404), and a plurality of counterweight blocks (405) are provided on the counterweight rod (404) through the counterweight nut (406). The forward and reverse motor (407) is located at the bottom of the rectangular main frame (101) at the position corresponding to the synchronous plate (403). The output end of the forward and reverse motor (407) is connected to the drive threaded rod (408). The other end of the drive threaded rod (408) is located at the bottom of the rectangular main frame (101) through the fixed bearing seat (410). The synchronous plate (403) is provided with the threaded bearing seat (409) at the position corresponding to the drive threaded rod (408). The drive threaded rod (408) and the threaded bearing seat (409) are threadedly connected.

9. The anti-rollover medical stretcher for oral and maxillofacial trauma first aid according to claim 8, characterized in that: The electronic control module (5) is a control terminal for the built-in battery module. A pressure sensor (6) is provided in the slot (106) that contacts the card post (205). The pressure sensor (6) and the forward and reverse motor (407) are both connected to the electronic control module (5).

10. The use of a medical stretcher for oral and maxillofacial trauma emergency that prevents the turning over of the patient according to any one of claims 1-9, characterized in that, Includes the following steps: A. Stretcher preparation and initialization: Stretcher structure inspection: Confirm that the rectangular main frame (101), reinforcing crossbeam (102), and supporting legs (103) of the main body of the stretcher (1) are integrally formed and without deformation; check whether the anti-slip rubber sleeves (105) on the handles (104) are intact and fit well to avoid slipping during handling; Load-bearing component installation: Insert several load-bearing sub-plates (202) into the slots (106) of the reinforcing beam (102) through the bottom locking posts (205), ensuring good contact between the locking posts and the pressure sensors (6) in the slots; after confirming that the upper surfaces of the panel (201), the rectangular main frame (101) and the reinforcing beam (102) are flush, lay the soft pad (203) flat on the load-bearing sub-plates (202); Initialization of the electrical control and center of gravity components: Turn on the electrical control module (5) and check the connection status of the pressure sensor (6) and the forward and reverse motor (407); adjust the dynamic center of gravity adjustment component (4), and drive the forward and reverse motor (407) to drive the drive threaded rod (408) through the electrical control module, so that the synchronous plate (403) drives the slider (402) and the counterweight rod (404) to move to the central axis of the stretcher, and then fix the counterweight block (405) in the middle position of the counterweight rod (404) through the counterweight nut (406) to complete the center of gravity reset; B. Fixed restraint: Two operators hold the handles (104) at both ends of the rectangular main frame (101) and place the stretcher steadily on the horizontal ground. The support legs (103) are in full contact with the ground to ensure stability. Then assist the patient to lie down in the center of the soft cushion (203), ensuring that the patient's center of gravity is aligned with the middle of the stretcher. Connect the three restraint straps (302) of the side block assembly (3) to the two side block supports (301) through buckles. The upper middle restraint strap wraps around the patient's waist, and the two lower middle restraint straps wrap around the patient's thighs and calves respectively. The tightness should be such that one finger can be inserted, so as to avoid being too tight and affecting blood circulation. C. Manual handling: Two to four operators hold the handles (104) at both ends and sides of the stretcher, with their hands in contact with the anti-slip rubber sleeves (105) to ensure balanced force application. During the transport process, the electronic control module (5) receives the pressure distribution data of the bearing plate collected by the pressure sensor (6) in real time. When the pressure difference on one side exceeds the preset value, the electronic control module automatically starts the forward and reverse motor (407). Through the threaded engagement of the threaded rod (408) and the threaded bearing seat (409), the synchronous plate (403) and the slider (402) move along the guide slide rod (401), thereby causing the counterweight block (405) on the counterweight rod (404) to slide towards the side with less pressure until the center of gravity of the stretcher returns to stability. If a sloping section is encountered, the side support bracket (301) can prevent the patient from sliding to the side, and further adjust the stability with the center of gravity adjustment component. D. Ambulance transfer: Push the stretcher into the stretcher compartment of the ambulance. After positioning it with the support leg (103), use the ambulance's matching fixing device to lock the edge of the rectangular main frame (101) to prevent the stretcher from shifting during vehicle travel. During vehicle travel, continuously monitor the pressure sensor data and center of gravity position through the electronic control module (5). If the center of gravity shifts due to bumps, the dynamic center of gravity adjustment component (4) will automatically make fine adjustments. If temporary care is needed for the patient, the restraint straps (302) at the corresponding positions can be untied. E. Storage and Placement: After placing the stretcher stably, untie the three restraint straps (302), assist the patient to leave the stretcher, remove the pad (203) for cleaning, remove the bearing plates (202) one by one from the slots (106), store them separately from the inserts (201), control the forward and reverse motors (407) through the electronic control module to make the counterweight (405) return to the middle of the stretcher, turn off the power of the electronic control module, and move it to a dry and ventilated place for storage.

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