Multi-functional intelligent flat car for medical use

Abstract

The application discloses a kind of medical multifunctional intelligent flat cars, it is related to medical field, including: operation platform, lifting mechanism, drive mechanism, monitoring instrument and shielding mechanism;Wherein operation platform is connected with lifting mechanism, drive mechanism, monitoring instrument and shielding mechanism communication, lifting mechanism adjusts the lifting of flat car according to need;Drive mechanism controls the steering and front and back operation of platform;Monitoring instrument includes electrocardiograph, oxygen supply device etc.;Shielding mechanism is arranged at the tail of flat car, including telescopic shielding cover.The medical multifunctional intelligent flat car of the application can provide power supply, oxygen supply and other support during the whole transportation process, can shield sunlight, rain and snow, is convenient to push when going uphill and downhill and easy to control speed.

Description

Technical Field

[0001] This invention relates to the medical field, and more specifically, to a medical multifunctional intelligent flatbed cart. Background Technology

[0002] Traditional stretchers are mainly used for pre-hospital emergency care and in-hospital examination and treatment of critically ill and immobile patients. However, their use is laborious and often requires multiple people to assist in transporting patients. The relatively low height of the stretcher requires pushers to bend over, increasing the difficulty. When going up or down slopes, it is strenuous and difficult to control the speed. After delivering critically ill patients to the ward, patients with a large initial weight require 3-6 people to assist in transferring them to the bed. During long transport distances, there is a lack of power and oxygen supply support, requiring medical staff to carry oxygen pillows. Furthermore, there are no protective devices for rain or snow, or for securing devices such as electrocardiographs and oxygen cylinders.

[0003] Furthermore, during the transfer of patients from stretchers to ambulances, it is crucial to load the patient quickly and stably into the ambulance, ensuring the stretcher's stability. This necessitates easy folding of the stretcher before loading. When the stretcher's outriggers and related mechanisms are transferred to the ambulance's loading compartment, they are subjected to significant stress, particularly the forces acting on the folding outriggers, which can easily damage them. Therefore, to improve the reliability and durability of the stretcher, a particularly effective solution is needed to withstand the stresses it experiences during normal use. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a medical multifunctional intelligent flatbed cart that can provide power supply and oxygen supply throughout the transportation process, can shield from sunlight, rain and snow, and is easy to push and control the speed when going uphill and downhill.

[0005] The present invention provides a medical multifunctional intelligent flatbed, comprising: a main frame, an operating platform, a lifting mechanism, a drive mechanism, a monitoring instrument, and a shielding mechanism;

[0006] The operating platform is connected to the lifting mechanism, drive mechanism, monitoring instruments, and shielding mechanism. The lifting mechanism adjusts the lifting of the flatcar as needed; the drive mechanism controls the steering and forward and backward movement of the platform; the monitoring instruments include an electrocardiograph and an oxygen generator; the shielding mechanism is located at the rear of the flatcar and includes a telescopic shield.

[0007] The main framework includes:

[0008] A stretcher, on which a patient is supported, has a surface that is adapted to the body shape of the patient being placed;

[0009] A pair of front outriggers and a pair of rear outriggers are rotatably connected to the main frame at their respective front and rear hinge points.

[0010] A constraint bar, connected to the main frame, extends between the constraint bar and the main frame at a longitudinal midpoint of the front outrigger; the constraint bar includes: an intermediate joint configured to form the constraint bar around an axis substantially parallel to the rotation axis of the outrigger; and an adjustment device for adjusting the longitudinal extension length of the constraint bar to lock the telescopic portion associated with the adjustment device in multiple longitudinal positions.

[0011] Preferably, it also includes a rotation control device that enables the front outrigger to perform a rotational movement suitable for retracting the front leg after the rotation control device is activated, and a leg rotation release device, including a detection device for detecting the lifting of the front outrigger from the ground and transmitting it to the rotation control device, and allowing the rotational movement only when the front outrigger is lifted from the ground.

[0012] Preferably, the detection device includes a movable support with a front leg hinged to it, and the rotation command is activated by actuating a control lever between the front leg and the first and second positions of the movable support.

[0013] Preferably, the intermediate joint is positioned below the axis of symmetry of the constraint rod during operation.

[0014] Preferably, the stretcher also includes a processing unit and a detection device configured to detect at least one vital parameter of the person and monitor the person's clinical condition based on the generation of at least one vital parameter signal.

[0015] Preferably, the detection device includes a temperature sensor for detecting the fever status of the person being transported.

[0016] Preferably, the oxygen generating device includes an oxygen concentrator comprising two distributors containing porous zeolite particles; a compressor configured to draw air from the environment and deliver it to the two distributors; an oxygen tank for regulating and stabilizing the flow rate of oxygen from the distributors; and a nitrogen tank for containing separated nitrogen and returning it to the atmosphere.

[0017] Preferably, the oxygen generating device includes at least one connector connected to an oxygen concentrator to receive oxygen and deliver the oxygen to the transported patient on the support platform.

[0018] Preferably, the chassis of the drive mechanism is connected to at least two front wheels and at least two rear wheels. A suspension assembly is provided between the chassis and at least one front wheel.

[0019] Preferably, the suspension assembly includes at least one elastic component, and the suspension assembly has a stiffness control device for the elastic component, which can shift the working direction of the elastic component relative to the axis to change the stiffness of the suspension assembly.

[0020] This invention provides a multifunctional intelligent medical flatbed that minimizes stress during loading into an ambulance while effectively resisting the same stress. An adjustable suspension assembly on the front wheels ensures different wheel stiffness requirements during loading and pushing. Ambulance loading can be performed without complex operator intervention. It can be configured for different operating setups, allowing patients to be transported in both horizontal and inclined positions. Power and oxygen supply are provided throughout the transport process. It provides protection from sunlight, rain, and snow, and is easy to push and control in inclines and declines. Attached Figure Description

[0021] Figures 1A to 1D This is a side view of a medical multifunctional intelligent flatbed under various operating configurations according to the present invention;

[0022] Figures 2A to 2D It corresponds to Figures 1A to 1D A side view of the front support leg and main frame of a medical multifunctional intelligent flatbed according to the present invention;

[0023] Figure 3 and Figure 4 These are side views of the main frame and constraint rods of a medical multifunctional intelligent flatbed cart according to the present invention in an operational configuration.

[0024] Figure 5 This is a top view of the main frame of a medical multifunctional intelligent flatbed according to the present invention;

[0025] Figure 6 and 7 These are perspective and detailed views of a rotary release device for a medical multifunctional intelligent flatbed according to the present invention;

[0026] Figure 8 and 9 These are, respectively, a side view and a detailed view of a rotating release device for a medical multifunctional intelligent flatbed in the activated and deactivated states of the present invention;

[0027] Figure 10A and 10B This is a side view of the rotating release device of the patient transport device of the present invention in the loading stage of an ambulance.

[0028] Figure 11 This is a schematic diagram of an oxygen generating device for a medical multifunctional intelligent flatbed cart according to the present invention.

[0029] Figure 12 This is a schematic diagram of the front wheel of a medical multifunctional intelligent flatbed cart according to the present invention.

[0030] Figure 13 This is a transverse cross-sectional view of the front wheel suspension assembly of a medical multifunctional intelligent flatbed cart of the present invention in an extended state and with the elastic element compressed.

[0031] Figure 14 This is a transverse cross-sectional view of the front wheel suspension assembly and elastic element of a medical multifunctional intelligent flatbed cart of the present invention in a compressed state.

[0032] Figure 15 This is a transverse cross-sectional view of the front wheel suspension assembly of a medical multifunctional intelligent flatbed cart of the present invention in an extended state and with the elastic element in an uncompressed state.

[0033] Figure 16 This is a transverse cross-sectional view of the front wheel suspension assembly of a medical multifunctional intelligent flatbed cart of the present invention in a compressed state and the elastic element in an uncompressed state.

[0034] Figure label:

[0035] 1. Main frame; 10. Load-bearing surface; 100. Intelligent flatcar; 101. Working direction of elastic element; 102. Shaft; 11. Feedback element; 12. Support element; 13. Elastic component; 13a. First end; 13b. Second end; 13c. Support shell; 14. Upper joint point; 14a. Stable joint position; 14b. Stable joint position; 15. Lower joint point; 2. Front outrigger; 20. Front hinge point; 200. Ambulance loading surface; 21. Wheel; 22. Straight rod section; 23. Rear bending section; 24. Compressor; 25. Oxygen tank; 26. Nitrogen tank; 27. Connector; 28. Ventilation grille; 29. ​​Inspection door; 30. Rear hinge point; 31. Pivot; 32. Second slide; 33. Stiffness control device; 34. Handle device; 35. Control lever; 36. Limiting device; 4. Constraint rod; 41. Linkage part (extendable rod); 41A. Adjacent surface; 42. Linkage part; 42A. Adjacent surface. 43 Intermediate joint, 44 Telescopic part, 5 Adjustment device, 6 Locking device, 7 Handle part, 71 Loading part, 72 Bending extension part, 8 Leg rotation release device, 81 Moving bracket, 82 Control lever, 83 First slide, 9 Control device Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] Referring to Figures 1-10, the present invention proposes a medical multifunctional intelligent flatbed 100, comprising: a main frame 1, an oxygen generator 16, an operating platform, a lifting mechanism, a drive mechanism, a monitoring instrument, and a shielding mechanism; wherein the operating platform is communicatively connected to the lifting mechanism, the drive mechanism, the monitoring instrument, and the shielding mechanism; the lifting mechanism adjusts the lifting of the flatbed as needed; the drive mechanism controls the steering and forward / backward movement of the platform; the monitoring instrument includes an electrocardiograph, etc.; the shielding mechanism is located at the rear of the flatbed and includes a retractable shield.

[0038] The main frame 1 includes:

[0039] A stretcher on which the patient is supported on the main frame 1, the stretcher having a surface adapted to the body shape of the patient being placed;

[0040] A pair of front support legs 2 and a pair of rear support legs 3 are rotatably connected to the main frame 1 at their respective front hinge point 20 and rear hinge point 30;

[0041] The handle portion 7 is located at the rear of the intelligent flatbed cart 100, which facilitates pushing during loading or pulling during unloading.

[0042] The loading section 71 contacts the ambulance loading surface 200. The forward and backward direction of the intelligent patient transport flatbed 100 is defined based on the ambulance loading direction, and loading is performed by pushing the front of the intelligent patient transport flatbed 100 towards the ambulance loading surface. The loading section 71 includes wheels mounted on a downwardly curved extension 72 at the front of the main frame 1.

[0043] Wheels are fitted at the hinged ends of the outriggers. When in the extended position, they support the main frame 1, maintaining a certain distance from the ground S. When in the retracted position, the front outriggers 2 and 3 are positioned near the main frame 1, making it suitable for loading. At this time, the wheels do not obstruct the positioning of the intelligent flatbed 100 on the loading surface 200, allowing the main frame 1 to be fixedly supported on the loading surface 200 of the ambulance. The wheels are hub motor driven wheels.

[0044] The front outrigger 2 is also connected to the main frame 1 by a constraint rod 4, which extends between the front outrigger 2 and the main frame 1 at the longitudinal midpoint of the front outrigger 2. The constraint rod 4 is rotatably connected to the front outrigger 2 between the front hinge point 20 and the wheel 21. The distance between the constraint rod 4 and the connection point of the front outrigger 2 and the ground S is at least twice the distance between the connection point and the hinge point 20.

[0045] The front outrigger 2 includes a straight section 22 and a curved section 23, with the curved section 23 facing the rear of the intelligent flatbed 100. Preferably, the constraint rod 4 is connected to the outrigger 2 at the location on the straight section 22, or at the transition area between the straight section 22 and the curved section 23.

[0046] See Figure 1A When the ambulance's loading surface 200 is in a horizontal position, the constraint rod 4 is tilted relative to the loading surface 200, forming an angle α between 20 and 40°.

[0047] from Figure 1A As can be seen from the figures, the other end of the constraint rod 4 is connected to the main frame 1, and at the rear position relative to the hinge point 20 of the front outrigger 2, it coincides with the rotation axis B around the hinge point 30 of the rear wheel 3. Referring to Figures 2A-2D, the constraint rod 4 of the intelligent flatbed 100 includes an intermediate joint 43, which is configured to form the constraint rod 4 around an axis C substantially parallel to the rotation axes A and B of the outriggers 2 and 3, with two respective connecting rod portions 41 and 42. The intermediate joint 43 can form a quadrilateral mechanism through which the movement of the front outrigger 2 is controlled. Figure 1A-1D The guide is shown between the extended and contracted positions.

[0048] Figures 1A to 1D The image shows the displacement of the front outrigger 2 from its extended position to its intermediate position during loading on the ambulance's loading surface 200. After contacting a portion of the ambulance, the front outrigger 2 is pushed to its retracted position, and the restraint rod 4 rotates about the intermediate joint 43. When the smart flatcar 100 is open, i.e., when the outrigger is in its extended position, the link portions 41, 42 abut against their respective defined abutment surfaces 41A, 42A, preventing the intermediate joint 43 from swinging in one of the rotational directions when the abutment surfaces 41A, 42A are in contact.

[0049] The adjacent surfaces 41A and 42A cause the link portions 41 and 42 to be slightly misaligned in a direction opposite to the direction determined by the movement of the front outrigger 2 from the extended position to the retracted position when they are in contact with each other, forming a slight misalignment within an angle β between 1 and 5° in the direction of their extended position.

[0050] See Figure 2A The intermediate joint 43 is positioned at a lower position relative to the axis of symmetry X of the constraint rod 4 so as to allow relative rotation of the two link sections.

[0051] See Figure 3 and Figure 4 The device according to the invention provides an adjustment device 5 for extending the constraint rod 4, for adjusting the longitudinal extension length of the constraint rod 4. The constraint rod 4 includes an extendable rod 41, which includes a telescopic portion 44 associated with the adjustment device 5 to allow the telescopic portion 44 to be locked in multiple longitudinal positions. Figures 2A and 2B are shown in the figures. Figure 4 Two different locking positions and the corresponding lever extensions are shown. See also... Figure 4The extendable portion 41 is hinged to the main frame 1 and has a longitudinal extension at least twice that of the connecting rod portion 42 with the hinge axis, achieving optimal distribution of moving parts by rationalizing the overall dimensions. The extendable rod 41 can be stressed during extension to enable automatic opening of the front outrigger 2 upon unloading from the loading surface 200, achieved by placing the center of rotation of the front wheel 21 at a higher position relative to the hinge point 20 of the front outrigger 2. Figure 1A As shown, there is a distance d between the rotation axis of wheel 21 and the hinge point 20, and the rotation axis of wheel 21 is closer to the front end of the intelligent flatbed 100.

[0052] Preferably, the smart flatbed 100 also includes a locking device 6 that locks the extendable rod 41 in one or more longitudinally extending positions, for example, formed by a series of seats that can engage with relatively movable pins.

[0053] Preferably, a remote control device (not shown in the figure) is also included. The remote control device for the locking device 6 is located on the handle of the intelligent flatbed 100. The extension and / or retraction of the extendable rod 41 can be achieved by an electric or hydraulic auxiliary mechanism.

[0054] The intelligent flatbed 100 for transporting patients includes a device for preventing accidental rotation of the front outrigger 2, in any situation or in case it may endanger the patient.

[0055] Preferably, the patient transport device 100 includes a leg rotation release device 8, which includes a detection device 80 for detecting the lifting of the front outrigger 2 from the ground S. After a rotation command is sent by the control device 9, the front outrigger 2 performs a rotational movement suitable for bringing it to a retracted position. The control device 9 includes a joystick associated with a cable or other similar system. The detection device 80 is configured to detect when the front outrigger 2 is lifted from the ground S and is connected to the rotation control device 9 such that rotational movement of the front outrigger 2 is permitted only after the front outrigger 2 has received a rotation command.

[0056] See in Figure 6-9 The detection device 80 includes a movable support 81 to which the front support leg 2 is hinged; the movable support 81 moves between first and second positions of the front support leg 2. When the movable support 81 passes between the first and second positions, it contacts a control lever 82, causing it to move and activating the rotation command. The control lever 82 is connected to the control device 9 via a cable acting on a mechanism that prevents rotation control device 9.

[0057] The movable support 81 slides within the first vertically opened groove 83. Figures 6 to 9 It can be seen that the first slide groove 83 is located in the corresponding area where the main frame 1 and the front support leg 2 are hinged.

[0058] Combination Figure 10A and 10B Description of the operation of the rotation release device 8: When the intelligent flatbed 100 is placed on the ground, the weight of the main frame 1 and the transported patient applies stress to the movable support 81, causing it to be positioned above the first slide rail 83. In the first position, the movable support 81 pushes the control lever 82, disabling the rotation control device 9. At this time, the operator will be unable to operate the rotation control device 9 to rotate the front outrigger 2. The rotation control device 9 is located at the handle portion 7 of the intelligent flatbed 100 and is used for the rotation of the front outrigger.

[0059] When the wheel 21 connected to the front outrigger 2 rises from the ground, as Figure 10B As shown, the movable support 81 descends, pushed by the weight of the front support leg 2 itself, or stressed by the elastic element 84, reaching the bottom of the first groove 83. In this position, the control lever 82 is moved to the second position, as... Figure 10B As shown, in this position, the rotation control device 9 is activated and can rotate the front outrigger 2.

[0060] When the intelligent flatbed 100 is loaded onto the ambulance, the loading section 71 is placed on the loading surface 200, lifting the main frame 1 and causing the front outriggers 2 and the movable support 81 to move downwards, as... Figure 10B As shown, the front outrigger 2 rotates, and the intelligent flatbed 100 for transporting patients is mounted on the ambulance. The rotation release device 8 prevents the front outrigger 2 from rotating if the intelligent flatbed 1000 for transporting patients is not properly positioned relative to the loading surface of the ambulance.

[0061] Preferably, the stretcher includes a support platform configured to support a person during use, the support platform being placed on a smart trolley. The support platform is made of a composite material, preferably comprising a polymer portion. The support platform is at least partially made of carbon fiber. This material helps improve the safety and comfort of the stretcher by limiting wear-induced fractures and cracks. The support platform includes a cover made of expanded rubber. This cover ensures patient comfort during transport. The cover of the support platform is made of a non-absorbent material resistant to chemical reagents. This cover makes the support platform easy to clean and prevents biocontamination.

[0062] The stretcher also includes a processing unit and a detection device configured to detect at least one measurement of a person's vital parameters. The processing unit reads the signal detected by the detection device and generates at least one vital parameter signal based on the signal from the measurement performed by the detection device, in order to monitor the person's clinical condition. The detection device and / or processing unit are at least partially housed in the support platform and / or intelligent stretcher.

[0063] The detection device includes at least one pair of electrodes that detect a predetermined current emitted by the transported person. The electrodes allow for preliminary analysis of the patient to determine their health status, such as heart and / or respiratory rate. The electrodes are housed in a base formed within a support platform and covered with a conductive coating that allows for electrical coupling between the electrodes and the patient placed on the stretcher.

[0064] The detection device includes a temperature sensor for detecting the fever level of the person being transported.

[0065] Preferably, the detection device includes at least one pressure sensor that detects the pressure exerted by the transported person on the support platform. During different phases of breathing, the patient performs essentially periodic chest expansion and contraction movements, generating varying degrees of pressure on the support platform. Preferably, these pressures are detected by the aforementioned pressure sensor and analyzed by the processing unit to determine the person's respiratory rate.

[0066] Preferably, the detection device includes at least one probe connected to a support platform and movable under multiple operating conditions to detect multiple measurements indicating the aforementioned important parameters. This probe allows for broad-spectrum and high-precision analysis of the patient's clinical condition by defining multiple important parameters, such as simplified electroencephalogram (EEG), muscle activity (surface electromyography), blood saturation, heart rate, impulse intensity, and other patient clinical data. Preferably, the probe includes a pulse oximeter.

[0067] The processing unit includes a data storage module configured to store vital signs signals. The storage module stores signals acquired during patient transport, providing information about the patient's clinical status upon admission. The processing unit may also include a transmission module configured to transmit the vital signs signals to external support equipment. During transport on a stretcher in an ambulance, the signals can be transmitted to equipment provided with the ambulance to allow medical personnel to continuously monitor the patient's clinical condition. The transmission module includes a radio transmitter configured to transmit the vital signs at radio frequencies. The transmission module includes a wired connector.

[0068] During use, the person being transported is placed on the support platform of the stretcher. The detection device acquires multiple measurements of vital vital parameters. The processing unit monitors the patient's clinical condition based on the measurement data from the detection device. At this stage, the rescue module stores the signals generated by the processing unit to retain information about the patient's clinical condition while the patient is placed on the stretcher. This information is transmitted to external devices via the transmission module.

[0069] By installing a sensor-equipped stretcher to detect at least one important parameter indicating the patient's condition, analysis can be performed during patient transport, ensuring accurate monitoring of vital parameters of the transported person during stretcher movement and placement in the ambulance. Furthermore, a storage module stores measurements acquired during personnel movement, providing medical staff with multiple parameters defining the patient's clinical condition upon admission; a transmission module allows for simple and rapid data transfer to hospital equipment.

[0070] The oxygen generating device 16 includes an oxygen concentrator 18, which is capable of generating concentrated oxygen from the surrounding air. The oxygen concentrator 18 is disposed in a cavity 17 defined by a support bracket under the support platform of the intelligent flatbed vehicle. The cavity 17 is a bottomless cavity, which facilitates improved ventilation of the oxygen concentrator 18 and the dissipation of heat generated during the operation of the oxygen concentrator 18.

[0071] The oxygen concentrator 18 includes a housing I, on which an access door 29 is provided on one of the three side walls. The access door 29 allows an operator to enter the oxygen concentrator 18 and any other components contained within the chamber 17 to perform cleaning, maintenance, and repair operations.

[0072] The oxygen concentrator 18 includes two distributors 19 containing porous zeolite particles configured to separate nitrogen from the air, producing concentrated oxygen. The oxygen concentrator 18 also includes a compressor 24 42 configured to draw air from the environment and deliver it to the two distributors 19. The oxygen concentrator 18 further includes an oxygen tank 25 for regulating and stabilizing the flow rate of oxygen from the distributors 19, and a nitrogen tank 26 for containing separated nitrogen and returning it to the atmosphere. The oxygen concentrator 18 also includes valves for regulating gas flow and sensors for reading purity and flow parameters.

[0073] The oxygen generating device 16 includes at least one connector 27 connected to an oxygen concentrator 18 to receive oxygen and deliver it to a transported patient on a support platform. The connector 27 is located outside the cavity 17.

[0074] The oxygen generator 16 includes ventilation grilles 28 on one or more of the three side walls of the housing I. The ventilation grilles 28 allow the oxygen concentrator 18 to draw air from the surrounding environment and extract concentrated oxygen. The ventilation grilles 28 also allow the heat generated by the oxygen concentrator 18 during operation to dissipate to the external environment. Furthermore, the ventilation grilles 28 also allow the oxygen concentrator 18 to re-inject nitrogen extracted from the air into the surrounding environment while extracting concentrated oxygen.

[0075] The chassis of the intelligent flatbed cart's drive mechanism is connected to at least two front wheels 21 and at least two rear wheels. A suspension assembly 50 is provided between the chassis and at least one front wheel 21. The suspension assembly 50 consists of a feedback element 11 connected to the chassis and a support element 12. The support element 12 is mounted on the shaft 102 of the feedback element 11.

[0076] The suspension assembly 50 includes at least one elastic component 13 and has a stiffness control device 33 for the elastic component 13. This stiffness control device 33 can shift the working direction 101 of the elastic component 13 relative to the shaft 102 to change the stiffness of the suspension assembly 50. Even a limited change in the working direction of the elastic component 13 will significantly alter the stiffness of the suspension assembly 50. While maintaining a constant force applied by the elastic component 130, the suspension assembly 50's torque resistance and stiffness change due to variations in the distance between the shear component of the force applied to the shaft 102 and the shaft 102. The elastic component 13 includes springs (as shown), other elastomers, pneumatic springs, torsion springs, etc.

[0077] The front wheel stiffness control device 33 includes a control mechanism 21 capable of changing the position of the lower engagement point 14 relative to the shaft 102. The elastic component 13 includes a first end 13a fixedly housed in the second portion of the upper engagement point 15, and a second end 13b movable by the control device 20 to change the position of the lower engagement point 14 relative to the shaft 102.

[0078] The support element 12 is provided with a plurality of stable engagement positions 14a, 14b for the second end 13b of the elastic component 13. These stable engagement positions 14a, 14b selectively contact the second end 13b. The control device 20 includes a handle device 34 movably connected to the support housing 13c of the elastic component 13. The handle device 34 is connected to the support housing 13c via a control rod 35. The handle device 21 includes a lever rotatably mounted on a frame and eccentrically connected to one end of the control rod 35. The eccentricity ensures the stability of the positioning of the second end 13b of the elastic component 13.

[0079] The suspension assembly 50 also includes means 36 for limiting the relative rotation angle of the support element 12 with respect to the feedback element 11 about axis 102. The limiting means 36 may include a pivot 31 connected to the feedback element 11 and sliding into a second groove 32 on the support element 12. Alternatively, the pivot 31 is located on the support element 12, and the second groove 32 is located on the feedback element 11. The second groove 32 extends along a circumferential arc extending about axis 102.

[0080] The user acts on the stiffness control device 33 to achieve adjustable stiffness for the suspension assembly 50. Movement of the lever on the stiffness control device 33 moves the second end 13b, shifting the lower engagement point 14 closer to or further away from the axle 102, and moving the support body 13c of the elastic element of the elastic assembly 13, thus enabling adjustable stiffness for the suspension assembly. Under good road conditions, the wheels are adjusted to a higher stiffness to ensure the handling stability of the intelligent flatcar during operation (e.g., ...). Figure 14 The front suspension assembly and elastic element are both in a compressed state; however, when driving on rough roads, such as concrete or potholes, the wheels are adjusted to a lower vertical stiffness to absorb vertical vibrations caused by uneven ground, thus improving the ride comfort of the intelligent flatbed vehicle. Figure 13 The front and mid-wheel suspension components are in the extended state and the elastic element is in the compressed state, or Figure 16 The front and mid-wheel suspension components are in a compressed state while the elastic elements are in an uncompressed state. Furthermore, to minimize the stress experienced during the loading of the intelligent flatbed into the ambulance, while simultaneously resisting the same stress, the wheels are adjusted to the lowest possible vertical stiffness (e.g., ...). Figure 15 The front wheel suspension assembly is in the extended state and the elastic element is in the uncompressed state.

[0081] This invention provides a multifunctional intelligent medical flatbed that minimizes stress during loading into an ambulance while effectively resisting the same stress. An adjustable suspension assembly on the front wheels ensures different wheel stiffness requirements during loading and pushing. Ambulance loading can be performed without complex operator intervention. It can be configured for different operating setups, allowing patients to be transported in both horizontal and inclined positions. Power and oxygen supply are provided throughout the transport process. It provides protection from sunlight, rain, and snow, and is easy to push and control in inclines and declines.

[0082] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A medical multifunctional intelligent flatbed cart, characterized in that, include: The main frame (1), operating platform, lifting mechanism, drive mechanism, monitoring instruments and shielding mechanism; The operating platform is connected to the lifting mechanism, drive mechanism, monitoring instruments and shielding mechanism. The lifting mechanism adjusts the lifting of the flatcar as needed; the drive mechanism controls the steering and forward and backward movement of the platform; the monitoring instruments include an electrocardiograph and an oxygen generator (16); the shielding mechanism is located at the rear of the flatcar and includes a telescopic shield. The main frame (1) includes: a stretcher on which the patient is supported, the stretcher having a surface adapted to the body shape of the patient; a pair of front outriggers (2) and a pair of rear outriggers (3) rotatably connected to the main frame (1) at their respective front hinge points (20) and rear hinge points (30); a restraint rod (4) connected to the main frame (1) and extending between the front outriggers (2) at a longitudinal midpoint and the main frame (1); the restraint rod (4) includes: an intermediate joint (43) configured to form the restraint rod (4) around an axis substantially parallel to the rotation axis of the front and rear outriggers; and an adjustment device (5) for adjusting the longitudinal extension length of the restraint rod (4) to lock the telescopic portion (44) associated with the adjustment device (5) in multiple longitudinal positions. It also includes a rotation control device (9) that enables the front outrigger (2) to perform a rotational movement suitable for retracting the front leg after the rotation control device (9) is activated, and a leg rotation release device (8) including a detection device (80) for detecting the lifting of the front outrigger (2) from the ground and transmitting it to the rotation control device (9), and allowing the rotational movement only when the front outrigger (2) is lifted from the ground; The chassis of the drive mechanism is connected to at least two front wheels (21) and at least two rear wheels, and a suspension assembly (50) is provided between the chassis and at least one front wheel (21); The suspension assembly (50) includes at least one elastic component (13) and a stiffness control device (33) for the elastic component (13); it also includes a feedback element (11) and a support element (12) connected to the chassis; the support element (12) is mounted on the shaft (102) of the feedback element (11); The stiffness control device (33) includes a control device; the elastic component (13) includes a first end (13a) which is fixedly housed at the upper engagement point (15) of the feedback element (11), and a second end (13b) which can be moved by the control device to change its position relative to the shaft (102) at the lower engagement point (14) of the support element (12). The support element (12) is provided with a plurality of stable engagement positions (14a, 14b) for selective contact of the second end (13b); The stiffness control device (33) can shift the working direction of the elastic component (13) relative to the shaft (102) to change the stiffness of the suspension component (50).

2. The medical multifunctional intelligent flatbed according to claim 1, characterized in that, The detection device (80) includes a movable support (81) with a front support hinged to it. An activation command for the rotational movement is generated by actuating a control lever (82) between the first and second positions of the movable support (81) by the front support (2).

3. The medical multifunctional intelligent flatbed according to claim 1, characterized in that, The intermediate joint (43) is positioned below the axis of symmetry (X) of the constraint rod (4) during operation.

4. A medical multifunctional intelligent flatbed according to claim 1, characterized in that, The stretcher also includes a processing unit and a detection device configured to detect at least one vital parameter of the person and monitor the person’s clinical condition based on the generation of at least one vital parameter signal.

5. A medical multifunctional intelligent flatbed according to claim 1, characterized in that, The detection device includes a temperature sensor for detecting the fever level of the person being transported.

6. A medical multifunctional intelligent flatbed according to claim 1, characterized in that, The oxygen generating unit (16) includes an oxygen concentrator (18) comprising two distributors (19) containing porous zeolite particles; a compressor (24) configured to draw air from the environment and deliver it to the two distributors (19); an oxygen tank (25) for regulating and stabilizing the flow rate of oxygen from the distributors (19); and a nitrogen tank (26) for containing separated nitrogen and returning it to the atmosphere.

7. A medical multifunctional intelligent flatbed according to claim 1, characterized in that, The oxygen generating device (16) includes at least one connector (27) connected to an oxygen concentrator (18) to receive oxygen and deliver oxygen to the transported patient on the support platform.

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