Detachable rescue stretcher and using method thereof

Abstract

The invention discloses a detachable rescue stretcher vehicle and a using method thereof. The detachable rescue stretcher vehicle comprises a vehicle body and a stretcher. The trolley body comprises a bottom plate, a lifting mechanism and a wounded person bearing plate, universal wheels are arranged below the bottom plate, the wounded person bearing plate is connected with the bottom plate through the scissor-shaped telescopic arm lifting mechanism, and the stretcher is detachably connected with the bearing plate through a buckle. The bearing plate comprises a bearing plate body and a sleeping mat, the sleeping mat is fixed through hydraulic buckles and rolling wheels, and the stretcher buckles fix the stretcher through arc-shaped clamping pieces. The stretcher comprises a frame and bearing cloth, the frame is composed of long and short supporting rods, the width is adjusted through a lead screw, and the bearing cloth and the long supporting rods are connected through multiple sets of zippers and kept tensioned. The long and short supporting rods adopt the design of folding short sections and threaded sleeves and can be folded to be put into a backpack, and double shoulder straps assist in carrying. Heating wires are arranged in the bearing cloth and the covering cloth, and the low-temperature rescue requirement is met. Through the detachable design, width adjustment, portability and the heat preservation function, the portable rescue device is suitable for field and city rescue, secondary damage is reduced, and efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical stretchers and relates to a detachable rescue stretcher and a use method thereof. Background Art

[0002] Stretchers are essential equipment for medical rescue operations. In emergencies such as war, earthquakes, and landslides, they fulfill the crucial task of quickly and safely transporting the wounded. These scenarios often involve large numbers of casualties, often with complex injuries such as fractures, internal organ damage, or hypothermia. Any carelessness during transport can lead to secondary injuries, such as fracture displacement, wound lacerations, or a further drop in body temperature, posing significant challenges to treatment. Therefore, designing a safe, convenient, and adaptable stretcher for various rescue scenarios is crucial for improving patient care and reducing transport risks.

[0003] Existing stretcher trolleys have several functional and design limitations that restrict their use in complex environments. First, most stretcher trolleys utilize an integrated design, with the stretcher and trolley body inseparable. This makes them suitable only for use on flat roads and impractical for use in mountainous terrain, rugged terrain, or confined spaces. For example, in areas with poor road conditions, stretcher trolleys are difficult to navigate, requiring rescue workers to rely on manual handling, which increases physical exertion and the risk of secondary injuries. Second, the lifting mechanisms of existing stretcher trolleys often utilize hydraulic or simple mechanical structures, resulting in a limited lifting range and difficulty meeting the height requirements of different rescue scenarios. They are also difficult to fold and occupy a large space during transportation and storage. For example, some stretcher trolleys are still bulky even when folded, making them difficult to carry in the field. Furthermore, the width of the stretcher's load-bearing surface is typically fixed, preventing flexible adjustment based on the patient's size. When transporting larger or smaller patients, a fixed-width stretcher may result in the load-bearing surface being too narrow or too loose, compromising handling comfort and stability. For example, the utility model patent with publication number CN213993958U discloses a stretcher with adjustable strut length, which is connected to the load-bearing surface through a fixed ring. However, after the width is adjusted, the load-bearing surface cannot be effectively tensioned, which limits its scope of use.

[0004] Cleaning and disinfection are another major problem with existing stretcher trolleys. Since the stretcher surface is usually fixed to the frame and difficult to disassemble, it is difficult to clean thoroughly after use. Repeated use may lead to the risk of cross-infection, especially in epidemics or large-scale rescue of casualties. This problem is particularly prominent. In addition, existing stretcher trolleys need to directly contact and lift the body of the injured many times during the transportation process, which increases the possibility of secondary injury. For example, patients with fractures or internal organ injuries may worsen their injuries due to vibrations or improper operation during frequent lifting. The rescue needs in low-temperature environments have not been fully met. Existing stretcher trolleys generally lack insulation functions and cannot provide support for rescue of hypothermic patients or in cold environments, which may cause the injuries to worsen.

[0005] Portability is a key requirement in field rescue operations, but existing stretcher designs rarely incorporate folding or portability features. Rescuers must carry bulky stretcher equipment, increasing the logistical burden. This is especially true during long-distance rescue operations, where the weight and size of the stretcher become limiting factors. Furthermore, existing stretcher carts are difficult to operate when loading and unloading, requiring multiple people to lift the injured person, which is inefficient and can easily cause injury.

[0006] In summary, the existing stretcher has the following major defects:

[0007] 1. The stretcher is an integrated design. The stretcher and the body cannot be disassembled. It is only suitable for flat roads and has limited use in the wild or on rugged terrain.

[0008] 2. The lifting mechanism has a limited range, making storage and transportation inconvenient;

[0009] 3. The injured person needs to be lifted directly multiple times during transportation, which may cause secondary injuries;

[0010] 4. The width of the stretcher cannot be adjusted to accommodate patients of different sizes, and the load-bearing surface is prone to loosening after adjustment;

[0011] 5. The stretcher surface is difficult to disassemble and clean, which poses a risk of cross infection;

[0012] 6. Lack of heat preservation function, unable to meet the rescue needs of low temperature environment or hypothermia casualties;

[0013] 7. Poor portability, difficult to carry during field rescue. Summary of the Invention

[0014] In view of this, the present invention aims to address the above-mentioned issues by providing a detachable rescue stretcher trolley and its use method. Through its detachable stretcher and trolley design, adjustable width stretcher structure, portable folding mechanism, heat-insulating function, and easy-to-clean load-bearing surface design, the present invention significantly improves the applicability, safety, and rescue efficiency of the stretcher trolley. The present invention can be flexibly used on both flat roads and complex terrain, reducing secondary injuries during transportation, accommodating the needs of patients of different body types, and is easy to clean and carry, making it suitable for a variety of rescue scenarios.

[0015] In order to achieve the above object, the present invention provides the following technical solutions:

[0016] A detachable rescue stretcher cart comprises a cart body and a stretcher, wherein the cart body comprises a bottom plate, a lifting mechanism, and a wounded person bearing plate; a universal wheel is provided below the bottom plate, and the wounded person bearing plate is connected to and supported above the bottom plate via the lifting mechanism; a stretcher buckle is provided on the wounded person bearing plate, and the stretcher is detachably connected to the wounded person bearing plate via the stretcher buckle;

[0017] The stretcher includes a frame and a carrying cloth, the frame includes two long support rods and two short support rods arranged in parallel; the two short support rods are connected to the long support rods on both sides at both ends by screw rods, and the width of the stretcher is adjusted by the screw rods; zippers are provided in the axial direction of the two long support rods, and the carrying cloth is also provided with a zipper, the carrying cloth and the long support rods are detachably connected by the zipper, and multiple zippers are provided side by side on at least one of the carrying cloth and the long support rods, so that the zipper connection position can be adjusted according to the width of the stretcher to keep the carrying cloth in a tensioned state.

[0018] Furthermore, the long struts and the short struts both include a plurality of folding short sections connected in series, and the difference between the folding short sections of the long struts and the short struts lies in the length and number; adjacent folding short sections are hinged, and the folding short sections are provided with a sleeve that can move along their axial direction; when the hinge point of the folding short section is located outside the sleeve, the folding short section can be rotated and folded, and when the sleeve moves so that the hinge point is located inside the sleeve, the folding short section cannot be rotated.

[0019] Furthermore, the sleeve is threadedly mounted on the folding short section, and the axial position is adjusted by rotation.

[0020] Furthermore, one side of the carrier cloth is provided with a covering cloth integrated therewith for covering the wounded; the covering cloth is provided with a plurality of Velcro strips for adhering to the carrier cloth; heating wires are provided in both the carrier cloth and the covering cloth, and the heating wires are connected to a power interface.

[0021] Furthermore, a stop sleeve is provided on the screw rod, and the stop sleeve is sleeved on the screw rod through a thread to limit the relative movement between the screw rod and the long support rod.

[0022] Furthermore, it also includes a backpack and double shoulder straps for placing the folded stretcher. The long support rod is provided with a buckle, and the double shoulder straps are also provided with a buckle. After the stretcher is unfolded, the long support rod and the double shoulder straps are connected by the buckle; the backpack and the double shoulder straps are detachably connected by the buckle.

[0023] Furthermore, the wounded load-bearing plate includes a load-bearing plate and a sleeping mat, the load-bearing plate is provided with a groove guide rail, a sleeping mat buckle is provided on one side of the load-bearing plate, a roller is provided under the sleeping mat, a slot is provided on one side of the sleeping mat, and the stretcher buckle is provided above the sleeping mat; the roller of the sleeping mat is slidably arranged in the groove guide rail, and the sleeping mat buckle is engaged with the slot on the sleeping mat to fix the sleeping mat to the load-bearing plate.

[0024] Furthermore, the sleeping pad buckle includes a fixed block, a latch, a spring, and a button; a liquid cavity and a sliding opening are provided in the fixed block; the latches are slidably arranged in pairs in the sliding opening, the spring is arranged between the two paired latches, and the ends of the two latches facing away from each other are in contact with the liquid in the liquid cavity; the button is arranged at the other end of the liquid cavity; when the sleeping pad is installed, the latch is engaged with the latch slot of the sleeping pad, and when the button is pressed, the liquid in the liquid cavity is squeezed, causing the latch to compress the spring, thereby separating the latch from the latch slot on the sleeping pad;

[0025] The stretcher buckle includes a slider, a buckle slide rail, and an arc-shaped clip; the buckle slide rail is fixed on the wounded load-bearing plate, and the slider is slidably arranged on the buckle slide rail. The spacing is adjusted by sliding the slider, and the slider is locked by a knob; one end of the arc-shaped clip is hinged to the slider, and the other end is locked by a knob, and the long support rod of the stretcher is fixed to the slider through the arc-shaped clip.

[0026] Furthermore, the lifting mechanism includes a scissor-shaped telescopic arm, a screw rod, and a motor group; the scissor-shaped telescopic arm is divided into two groups in the front and back direction on the base plate, with two scissor-shaped telescopic arms distributed on the left and right in each group, and the two scissor-shaped telescopic arms in each group are connected by a connecting rod; the connecting rods in the two groups of scissor-shaped telescopic arms are both threadedly sleeved on the screw rod, and the connection threads of the two connecting rods to the screw rod are in opposite directions. When the screw rod rotates, the two connecting rods are driven to move at the same time, thereby realizing the synchronous lifting and lowering of all the scissor-shaped telescopic arms;

[0027] The motor group is connected to the screw rod through gear transmission, and a manual jack is provided at the end of the screw rod for connecting a crank to manually rotate the screw rod; a slidable gear tooth is provided between the motor group and the screw rod, and the switching between manual and electric drive of the screw rod is achieved by moving the gear tooth.

[0028] A method for using the detachable rescue stretcher as described above comprises the following steps:

[0029] The first step is to adjust the stretcher width according to the size of the injured person and connect the tension stretcher surface;

[0030] The second step is to touch the injured person's body and lift him onto a stretcher;

[0031] The third step is to place the stretcher cover on the injured person's body to keep the injured person warm and secure. Depending on the environment or the injured person's body temperature, heating may be used.

[0032] The fourth step is to carry the injured person. Connect the buckles of the shoulder straps to the stretcher. This will reduce fatigue on the hands during the carrying process, save the stretcher bearer's physical strength, and improve combat effectiveness. Depending on the current rescue environment, decide whether to place the injured person and stretcher on the vehicle body. When the road conditions are good and suitable for vehicle movement, use the vehicle body to carry the injured person.

[0033] Step 5: After the patient is transported to the hospital, the patient and the stretcher are placed on the bed. The stretcher zipper is quickly separated, and the patient and the carrying cloth are placed on the bed. The stretcher frame is removed and the next patient is carried.

[0034] The beneficial effects of the present invention are:

[0035] The present invention provides a detachable rescue stretcher and its use method. Compared with the existing technology, it has significant technical advantages and practical value. It can effectively solve many problems of existing stretchers in rescue scenarios, including limited application scenarios, easy secondary injuries during transportation, non-adjustable width, difficult cleaning, lack of thermal insulation function, and insufficient portability. The following details the beneficial effects of the present invention from multiple aspects:

[0036] 1. Detachable design to expand application scenarios

[0037] The stretcher trolley of the present invention adopts a detachable design, which flexibly connects the stretcher and the trolley body through a snap-on structure, solving the problem of limited application of the integrated design of traditional stretcher trolleys in different scenarios. The trolley body is equipped with a lifting mechanism and universal wheels, which is suitable for flat roads, such as urban roads or inside hospitals, and can transport the wounded quickly and smoothly; and the stretcher can be disassembled separately, which is suitable for scenes that are difficult for the trolley body to reach, such as wild mountains, rugged terrain or narrow spaces. This design realizes the flexible switching of the same equipment in multiple rescue environments, significantly expanding the scope of application. For example, in earthquake rescue, the stretcher can be separated for primary rescue in the ruins, and then combined with the trolley body after reaching a flat road, which improves the continuity and efficiency of the rescue.

[0038] 2. The width is adjustable to accommodate patients of different sizes

[0039] The stretcher uses a screw to adjust the frame width, and combines multiple sets of zippers to connect the load-bearing cloth, allowing for flexible width adjustment. Traditional stretchers have a fixed width and are difficult to adapt to patients with large body sizes. This can cause the load-bearing surface to be too narrow, affecting comfort, or too wide, causing looseness and reducing handling stability. The present invention uses a screw to drive the long support rod to move, and selects a suitable zipper combination to ensure that the load-bearing cloth always remains in a tensioned state, solving the problem of loose load-bearing surface after width adjustment. This design can accommodate children, adults, or larger patients, enhancing the comfort and safety of transportation while improving the versatility of the equipment.

[0040] 3. Highly portable, suitable for field rescue

[0041] The stretcher's frame is composed of short folding sections that are folded using a hinged and sleeve structure. After folding, it can be loaded into a matching backpack, making it easy for rescuers to carry. Traditional stretchers are large, which increases the logistical burden during field rescues. However, the folding design of the present invention significantly reduces the difficulty of transportation and storage. In addition, the double shoulder straps are connected to the stretcher via buckles, allowing the shoulders to bear the weight instead of lifting with both hands, reducing the physical exertion of rescuers and improving the efficiency of long-distance transportation. This portability and ergonomic design are particularly suitable for rescue in the wild or remote areas, reducing logistical pressure and improving the mobility of rescue operations.

[0042] 4. Heat preservation function to meet the needs of low temperature environment

[0043] The carrier cloth and the covering cloth have built-in heating wires, which are powered by an external power supply interface and can provide thermal insulation in low-temperature environments or when rescuing hypothermic patients. Existing stretcher carts generally lack thermal insulation designs, which may cause the patient's body temperature to drop further in cold environments, aggravating the injury. The heating wire design of the present invention can effectively maintain the patient's body temperature, especially in high-altitude cold areas or night-time rescue scenarios, significantly reducing the risk of worsening injuries caused by hypothermia. The covering cloth is fixed with Velcro, which is not only easy to operate, but also can effectively wrap the patient, further improving the thermal insulation effect and stability during transportation.

[0044] 5. Easy to disassemble and clean, reducing the risk of cross infection

[0045] The stretcher's carrying cloth is quickly connected to the frame via a zipper, making it easy to disassemble and facilitate cleaning and disinfection. Traditional stretchers often have fixed load-bearing surfaces, which are difficult to clean and can lead to cross-infection after repeated use, a risk that is particularly high during epidemics or large-scale casualty rescue operations. The detachable carrying cloth design of the present invention allows rescuers to quickly replace the cloth with a clean one, reducing the risk of infection. Furthermore, the carrying cloth can be carried in bulk, meeting the needs of large-scale rescue operations and improving the management efficiency and sanitation safety of the equipment.

[0046] 6. Smooth lifting and lowering to reduce secondary injuries

[0047] The lifting mechanism of the vehicle body adopts four sets of scissor-shaped telescopic arms, which realize synchronous lifting and lowering through screw rods and connecting rods to ensure the stability of the load-bearing plate for the injured. Traditional stretcher carts have a limited lifting range or insufficient stability, and secondary injuries may be caused by vibration during transportation. The scissor-shaped telescopic arm design of the present invention combines electric and manual drive modes, supports flexible height adjustment, and is suitable for different rescue scenarios, such as getting on and off ambulances or transferring hospital beds. The hydraulic buckle realizes one-button unlocking, simplifies the connection and separation operation of the stretcher and the vehicle body, reduces the direct lifting of the injured during transportation, and significantly reduces the risk of secondary injuries such as fracture displacement or wound laceration.

[0048] 7. Easy operation and improved rescue efficiency

[0049] This invention optimizes the operational process through hydraulic buckles, zipper connections, and dual shoulder straps. The sleeping pad buckle utilizes a hydraulic principle, allowing for quick release with the push of a button. The stretcher buckle is secured with a slider and curved clips, making it easy and secure to operate. The buckled connection between the dual shoulder straps and the stretcher reduces arm fatigue, making it suitable for prolonged transport. These features collectively improve the convenience and efficiency of rescue operations, particularly during high-intensity, continuous rescue missions, saving rescuers' energy and enhancing overall rescue capabilities.

[0050] 8. Multifunctional integration to meet complex rescue needs

[0051] The present invention integrates multiple functions, including a detachable structure, width adjustment, foldable and portable, heat preservation and heating, and hydraulic buckles, which comprehensively improve the practicality of the equipment. The backpack can store supplies such as first aid kits, spare carrying cloths and batteries, enhancing logistical support capabilities. The switching between electric and manual lifting modes adapts to the use requirements under different power conditions and ensures normal operation in power outages or emergency situations. This multifunctional design enables the stretcher to cope with a variety of complex scenarios such as urban rescue, field rescue, and post-disaster reconstruction, demonstrating high adaptability and reliability.

[0052] In summary, the detachable rescue stretcher of the present invention significantly improves rescue efficiency and safety through its innovative design, addressing the shortcomings of traditional stretchers in terms of application scenarios, handling safety, cleanability, and portability. Its flexible disassembly structure, smooth lifting mechanism, convenient operation, and heat-insulating and clean functions make it widely applicable in various rescue environments, providing efficient and reliable support for the treatment of the wounded.

[0053] Other advantages, objects, and features of the present invention will be described in part in the following description and, in part, will be apparent to those skilled in the art upon examination of the following description or may be learned from practice of the present invention. The objects and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below with reference to the accompanying drawings, in which:

[0055] Figure 1 It is an overall schematic diagram of the detachable rescue stretcher in the present invention.

[0056] Figure 2 It is an overall schematic diagram of the stretcher in the present invention.

[0057] Figure 3 Schematic diagram of the split stretcher of the present invention.

[0058] Figure 4 This is another arrangement of the stretcher zipper in the present invention.

[0059] Figure 5 Schematic diagram of the connection of the short struts in the present invention.

[0060] Figure 6 It is a structural schematic diagram of the foldable short section in the present invention.

[0061] Figure 7 Schematic diagram of the use of the carrier cloth and the covering cloth in the present invention.

[0062] Figure 8 Schematic diagram of the disassembly of the backpack and the shoulder straps in the present invention.

[0063] Figure 9 It is a structural schematic diagram of the vehicle body in the present invention.

[0064] Figure 10 Schematic diagram of vehicle body lifting.

[0065] Figure 11 Schematic diagram of the unfolding of the casualty weight-bearing board.

[0066] Figure 12 Schematic diagram of the assembly of the casualty load-bearing plate.

[0067] Figure 13 This is a diagram of the sleeping pad buckle.

[0068] Figure 14 This is a schematic diagram of the stretcher buckle.

[0069] Figure 15 It is a schematic diagram of manual and electric control lifting.

[0070] Figure 16 It is a schematic diagram of the use process of the present invention.

[0071] Figure numerals: 1-frame; 11-long support rod; 12-short support rod; 13-screw rod; 14-clip; 15-stop sleeve; 2-carrying cloth; 3-backpack; 4-double shoulder straps; 5-covering cloth; 121-folding short section; 122-sleeve; 6-base plate; 7-universal wheel; 8-wounded load-bearing plate; 9-screw rod; 10-connecting rod; 16-scissor-shaped telescopic arm; 17-motor group; 18-gear; 81-carrying plate; 82-sleeping mat; 83-stretcher clip; 84-clip slide rail; 85-sleeping mat clip; 851-clip tooth; 852-liquid chamber; 853-button; 854-spring. DETAILED DESCRIPTION

[0072] The following describes the embodiments of the present invention by means of specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0073] Among them, the accompanying drawings are only for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings.

[0074] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0075] See also Figures 1 to 16 The detachable rescue stretcher cart of this embodiment consists of a body and a stretcher. The body includes a base plate 6, a lifting mechanism, and a patient support plate 8. The stretcher is detachably connected to the patient support plate 8 via a stretcher buckle 83. The stretcher comprises a frame 1 and a support cloth 2. The frame 1 is composed of long struts 11 and short struts 12, and its width is adjusted by a screw 9. The support cloth 2 is connected to the long struts 11 by a zipper to maintain tension. The following describes the structure of the cart and stretcher.

[0076] 1. Vehicle structure

[0077] 1.1 Base Plate 6

[0078] The base plate 6, the basic support structure of the vehicle, is made of high-strength aluminum alloy and has sufficient load-bearing capacity. Four sets of universal wheels 7 with locking functions are fixedly mounted below the base plate 6, ensuring flexible movement on flat surfaces (such as hospital corridors or ambulance interiors) and meeting efficient transportation requirements.

[0079] 1.2 Lifting mechanism

[0080] The lifting mechanism is used to adjust the height of the patient's load-bearing plate 8, and includes a scissor-shaped telescopic arm 16, a screw rod 9 and a motor group 17. It is designed to lift and lower smoothly to meet the needs of different scenarios.

[0081] Scissor-shaped telescopic arms 16 are arranged in two groups, front and back, on the base plate 6, with two arms symmetrically arranged in each group, for a total of four groups. Each group of telescopic arms consists of two intersecting stainless steel rods, connected to the base plate 6 and the patient support plate 8 at a hinge point. The two telescopic arms in each group are connected by a connecting rod 10, which is threaded onto the screw rod 9 to achieve synchronous lifting and lowering, ensuring smooth movement of the patient support plate 8.

[0082] Screw 9: The threads at both ends of screw 9 are threaded in opposite directions (half left-handed and half right-handed). Two sets of connecting rods 10 are threaded onto screw 9. Rotation of screw 9 drives connecting rods 10 toward or away from each other, allowing all scissor-shaped telescopic arms 16 to rise and fall synchronously, adjusting the height to suit an ambulance or hospital bed. A stopper 15 is installed on screw 9, threaded onto it to limit the relative movement of screw 9 and connecting rods 10, ensuring lifting stability.

[0083] Motor unit 17 and drive mode: Motor unit 17 comprises a DC motor, a gear transmission, and a lithium battery. This gear drive drives screw 9, providing stable power. Screw 9 has a manual jack at its end for manual rotation via a crank. A sliding gear 18 switches between electric and manual modes via a sliding lever. In electric mode, motor unit 17 drives screw 9, while in manual mode, the crank rotates screw 9, adapting to varying power supply conditions.

[0084] 1.3 Injured weight bearing board 8

[0085] The wounded person bearing plate 8 is used to support the stretcher, and includes a bearing plate 81 and a sleeping mat 82. The plate is made of high-strength composite material and is light and strong.

[0086] The carrier plate 81 is provided with two parallel groove guide rails to guide the sliding of the sleeping mat 82 rollers to ensure smooth movement. A sleeping mat buckle 85 is provided on one side of the carrier plate 81 to fix the sleeping mat 82.

[0087] Sleeping pad 82: Made of medical waterproof cloth, it has rollers mounted on its underside that slide along grooved guide rails. A slot is provided on one side of the sleeping pad 82, which engages with the sleeping pad buckle 85 on the support plate 81. A stretcher buckle 83 is located above the sleeping pad 82 to secure the stretcher.

[0088] Sleeping pad buckle 85: Sleeping pad buckle 85 comprises a fixed block, latching teeth 851, a spring 854, and a button 853. The fixed block is provided with a liquid chamber 852 (filled with hydraulic oil) and a sliding opening. The latching teeth 851 slide in pairs within the sliding opening. A spring 854 connects the two latching teeth 851. The distal ends of the latching teeth 851 contact the liquid chamber 852. The button 853 is located at the other end of the liquid chamber 852. During installation, the latching teeth 851 snap into the sleeping pad slot. Pressing the button 853 pressurizes the liquid chamber 852, compressing the spring 854 and forcing the latching teeth 851 closer together, separating them from the slot for quick unlocking.

[0089] Stretcher buckle 83: The stretcher buckle 83 consists of a slider, a buckle rail 84, and an arc-shaped clip. The clip rail 84 is fixed to the sleeping mat 82, and the slider slides on the clip rail 84 and is locked in place by a knob. One end of the arc-shaped clip is hinged to the slider, and the other end is locked by a knob, fastening the stretcher's long support rod 11 to ensure stable fixation.

[0090] 2. Stretcher structure

[0091] 2.1 Framework 1

[0092] The frame 1 is composed of two long struts 11 and two short struts 12 arranged in parallel. It is made of aluminum alloy and is light and strong. The long struts 11 and the short struts 12 are connected in series by multiple folding short sections 121. Adjacent folding short sections 121 are connected by hinge points (hinge type). A sleeve 122 is provided on the folding short section 121 and is screwed in. The axial position is adjusted by rotating the sleeve 122. When the hinge point is outside the sleeve 122, the folding short section 121 can be rotated and folded; when the sleeve 122 covers the hinge point, the folding short section 121 cannot be rotated, maintaining the rigidity of the frame 1. The two ends of the short struts 12 are connected to the long struts 11 through a screw rod 13. A stop sleeve 15 is provided on the screw rod 13, which is screwed in to limit the relative movement of the screw rod 13 and the long strut 11. The width of the stretcher is adjusted by rotating the screw rod 13 to accommodate wounded people of different sizes.

[0093] 2.2 Carrier cloth 2

[0094] The carrier cloth 2 is made of high-strength polyester fabric. A zipper is secured axially to the long struts 11, and multiple zippers are arranged side by side along the long sides of the carrier cloth 2. By selecting different zippers for connection to the long struts 11, the width of the carrier cloth 2 can be adjusted to maintain tension and prevent slack. One side of the carrier cloth 2 is connected to the cover cloth 5, which is equipped with multiple Velcro strips for attachment to the carrier cloth 2 to cover the patient. Both the carrier cloth 2 and the cover cloth 5 have built-in heating wires connected to a power source to provide insulation for patients in low-temperature environments or those experiencing hypothermia.

[0095] 2.3 Backpack 3 and shoulder straps 4

[0096] Backpack 3 is made of waterproof nylon and is used to store supplies such as a folded stretcher, a first aid kit, and batteries. The shoulder straps 4 are equipped with buckles, and buckles 14 are located at each end of the long support rod 11. When the stretcher is unfolded, the shoulder straps 4 are connected via buckles 14, allowing the shoulder straps 4 to bear the weight, reducing arm fatigue. The backpack 3 and shoulder straps 4 are detachably connected via buckles, allowing for flexible configuration and portability.

[0097] The stretcher in this embodiment is used as follows:

[0098] 1. Adjust the width of the stretcher: According to the patient's size, rotate the screw 13 of the frame 1 to adjust the spacing between the long struts 11. Select the appropriate zipper on the carrier cloth 2 to connect it to the long struts 11. Rotate the screw 13 to tighten the carrier cloth 2, ensuring there is no slack. The stopper 15 fixes the screw 13 in place to prevent width changes.

[0099] 2. Position the injured person: Lift the injured person onto the stretcher and place them on the carrier cloth 2, with their head at the front. Secure the cover cloth 5 with Velcro to wrap the injured person. If the ambient temperature is low or the injured person is experiencing hypothermia, connect the power cord to activate the heating element to maintain body temperature.

[0100] 3. Carrying the wounded: In complex terrain (such as mountains), the stretcher is separated, and the rescuers connect the buckle 14 of the long support rod 11 with the buckle of the double shoulder strap 4, and use the shoulders to carry the stretcher to reduce arm fatigue. On flat roads (such as city roads), the stretcher is fixedly installed on the wounded load-bearing plate 8 by the stretcher buckle 83, the arc-shaped clamp fastens the long support rod 11, and the knob is locked. The sleeping pad 82 slides into the groove guide rail of the load-bearing plate 81 through the roller, and the tooth 851 of the sleeping pad buckle 85 is clamped into the groove and fixed. According to the target height (such as an ambulance or a hospital bed), the height of the lifting mechanism is adjusted by electric mode (the motor group 17 drives the screw rod 9) or manual mode (inserting the crank to rotate the screw rod 9) and pushed to the target position.

[0101] 4. Hospital transfer: After arriving at the hospital, press the button 853 of the sleeping pad buckle 85, and the hydraulic pressure will separate the teeth 851 to release the sleeping pad 82; unfasten the knob of the stretcher buckle 83, disassemble the stretcher, and place the injured person together with the carrying cloth 2 on the bed to reduce direct lifting and reduce the risk of secondary injury.

[0102] 5. Folding and Storage: After use, rotate sleeve 122 to remove the hinge point, fold the long and short struts 11 and 12, and place them in backpack 3. Backpack 3 will store the spare carrier cloth 2 and first aid supplies. Remove the carrier cloth 2, clean and disinfect it (using medical alcohol or high-temperature disinfection), wipe the body of the backpack, fold it to the lowest height, and store it in a dry environment.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solutions, which should all be included in the scope of the claims of the present invention.

Claims

1. A detachable rescue stretcher vehicle, comprising a vehicle body and a stretcher, characterized in that: The vehicle body includes a base plate, a lifting mechanism, and a patient load-bearing plate; a universal wheel is provided below the base plate, and the patient load-bearing plate is connected to and supported above the base plate via the lifting mechanism; a stretcher buckle is provided on the patient load-bearing plate, and the stretcher is detachably connected to the patient load-bearing plate via the stretcher buckle; The stretcher includes a frame and a carrying cloth, the frame includes two long support rods and two short support rods arranged in parallel; the two short support rods are connected to the long support rods on both sides at both ends by screw rods, and the width of the stretcher is adjusted by the screw rods; zippers are provided in the axial direction of the two long support rods, and the carrying cloth is also provided with a zipper, the carrying cloth and the long support rods are detachably connected by the zipper, and multiple zippers are provided side by side on at least one of the carrying cloth and the long support rods, so that the zipper connection position can be adjusted according to the width of the stretcher to keep the carrying cloth in a tensioned state.

2. The detachable rescue stretcher according to claim 1, characterized in that: The long struts and the short struts both include a plurality of folding short sections connected in series. The difference between the folding short sections of the long struts and the short struts lies in the length and number. Adjacent folding short sections are hinged, and a sleeve that can move along its axial direction is provided on the folding short section. When the hinge point of the folding short section is outside the sleeve, the folding short section can be rotated and folded. When the sleeve moves so that the hinge point is inside the sleeve, the folding short section cannot be rotated.

3. The detachable rescue stretcher according to claim 2, characterized in that: The sleeve is sleeved on the folding short section through a thread, and the axial position is adjusted by rotation.

4. The detachable rescue stretcher according to claim 1, characterized in that: One side of the carrier cloth is provided with a covering cloth integrated therewith for covering the wounded; the covering cloth is provided with a plurality of Velcro strips for adhering to the carrier cloth; heating wires are provided in both the carrier cloth and the covering cloth, and the heating wires are connected to a power interface.

5. The detachable rescue stretcher according to claim 1, characterized in that: The screw rod is provided with a stop sleeve, which is sleeved on the screw rod through a thread to limit the relative movement between the screw rod and the long support rod.

6. The detachable rescue stretcher according to claim 1, characterized in that: It also includes a backpack and double shoulder straps for placing the folded stretcher. Buckles are provided on the long support rods and the double shoulder straps are also provided with buckles. After the stretcher is unfolded, the long support rods are connected to the double shoulder straps through the buckles; the backpack and the double shoulder straps are detachably connected through the buckles.

7. The detachable rescue stretcher according to claim 1, characterized in that: The wounded load-bearing plate includes a load-bearing plate and a sleeping mat, the load-bearing plate is provided with a groove guide rail, a sleeping mat buckle is provided on one side of the load-bearing plate, a roller is provided under the sleeping mat, a slot is provided on one side of the sleeping mat, and the stretcher buckle is provided above the sleeping mat; the roller of the sleeping mat is slidably arranged in the groove guide rail, and the sleeping mat buckle is engaged with the slot on the sleeping mat to fix the sleeping mat to the load-bearing plate.

8. The detachable rescue stretcher according to claim 7, characterized in that: The sleeping pad buckle includes a fixed block, a latch, a spring, and a button; a liquid cavity and a sliding opening are provided in the fixed block; the latches are slidably arranged in pairs in the sliding opening, and the spring is arranged between the two paired latches, with the ends of the two latches facing away from each other in contact with the liquid in the liquid cavity; the button is arranged at the other end of the liquid cavity; when the sleeping pad is installed, the latch is engaged with the latch slot of the sleeping pad, and when the button is pressed, the liquid in the liquid cavity is squeezed, causing the latch to compress the spring, thereby separating the latch from the latch slot on the sleeping pad; The stretcher buckle includes a slider, a buckle slide rail, and an arc-shaped clip; the buckle slide rail is fixed on the wounded load-bearing plate, and the slider is slidably arranged on the buckle slide rail. The spacing is adjusted by sliding the slider, and the slider is locked by a knob; one end of the arc-shaped clip is hinged to the slider, and the other end is locked by a knob, and the long support rod of the stretcher is fixed to the slider through the arc-shaped clip.

9. The detachable rescue stretcher according to claim 1, characterized in that: The lifting mechanism includes a scissor-shaped telescopic arm, a screw rod, and a motor group; the scissor-shaped telescopic arm is divided into two groups on the bottom plate in a front-to-back direction, with two scissor-shaped telescopic arms distributed on the left and right sides in each group, and the two scissor-shaped telescopic arms in each group are connected by a connecting rod; the connecting rods in the two groups of scissor-shaped telescopic arms are both screwed onto the screw rod, and the connection threads of the two connecting rods to the screw rod are in opposite directions. When the screw rod rotates, the two connecting rods are driven to move at the same time, thereby realizing the synchronous lifting and lowering of all the scissor-shaped telescopic arms; The motor group is connected to the screw rod through gear transmission, and a manual jack is provided at the end of the screw rod for connecting a crank to manually rotate the screw rod; a slidable gear tooth is provided between the motor group and the screw rod, and the switching between manual and electric drive of the screw rod is achieved by moving the gear tooth.

10. A method for using the detachable rescue stretcher according to any one of claims 1 to 9, characterized in that: The steps include: The first step is to adjust the stretcher width according to the size of the injured person and connect the tension stretcher surface; The second step is to touch the injured person's body and lift him onto a stretcher; The third step is to place the stretcher cover on the injured person's body to keep the injured person warm and secure. Depending on the environment or the injured person's body temperature, heating may be used. The fourth step is to carry the injured person. Connect the buckles of the shoulder straps to the stretcher. This will reduce fatigue in the hands, save the stretcher bearer's energy, and improve combat effectiveness. Depending on the current rescue environment, decide whether to place the injured person and stretcher on the vehicle body. When the road conditions are good and suitable for vehicle movement, use the vehicle body to carry the injured person. Step 5: After the patient is transported to the hospital, the patient and the stretcher are placed on the bed. The stretcher zipper is quickly separated, and the patient and the carrying cloth are placed on the bed. The stretcher frame is removed and the next patient is carried.

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