Pre-hospital first-aid downstairs stretcher chair

By designing the first aid downstairs stretcher chair in front of the hospital, using a crawler walking chassis and other components, the problem of difficulty walking on the stairs and inability to provide a flat lying posture in the existing technology is solved, and the function of moving on the stairs and lying on the patient is realized, improving the efficiency and safety of first aid.

CN222788039UActive Publication Date: 2025-04-25CHONGQING EMERGENCY MEDICAL CENT (CHONGQING FOURTH PEOPLES HOSPITAL CHONGQING INST OF EMERGENCY MEDICINE)
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Patent Information

Application Number
CN202421578902.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-05
Publication Date
2025-04-25
Estimated Expiration
2034-07-05

AI Technical Summary

Technical Problem

In prior art In pre-hospital emergency, stretcher chairs are difficult to walk on stairs, resulting in huge physical energy consumption of medical staff. The existing wheelchairs cannot provide the patient with a lying posture, and are functionally single.

Method used

A pre-hospital emergency downstairs stretcher chair is designed, using a crawler walking chassis, lifting components, top support components and restraint belts to realize the function of walking on the stairs and lying flat on the patient.

Benefits of technology

Through the crawler walking chassis, the device can walk on the stairs, saving the physical strength of medical staff. The device has the functions of a stretcher lying flat and a wheelchair, which improves the efficiency and safety of first aid work.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a pre-hospital first-aid downstairs stretcher chair, which relates to the field of medical first aid and comprises a crawler walking chassis, and a horizontal support plate and a lifting component for adjusting the height of the support plate are arranged above the crawler walking chassis; a backrest is rotationally arranged on the supporting plate, and a jacking assembly is arranged on the supporting plate and used for jacking the back face of the backrest and adjusting the angle of the backrest. The device has the beneficial effects that the device can be driven to walk on stairs through the crawler walking chassis, physical strength of medical staff for carrying a patient in a corridor through a stretcher is saved, and the device can carry the patient in a sitting posture, so that the length of the device can be remarkably reduced, and the device can conveniently move in a narrow stair passage; the backrest is adjusted to be in a horizontal state through the jacking assembly, the device has the function of a stretcher to lie flat, can move on stairs and also has the function of a wheelchair, and the device is beneficial to first-aid work by setting rich functions.
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Description

Technical Field

[0001] The utility model relates to the technical field of medical emergency, in particular to a pre-hospital emergency downstairs stretcher chair. Background Art

[0002] Many buildings do not have elevators, so medical staff can only carry patients down from the upper floors on stretchers. Carrying patients down the stairs on stretchers consumes a lot of physical strength. In addition, the corridors of some buildings are narrow, and medical staff usually stand at both ends of the stretcher when carrying patients. Because the stretcher is long, it is inconvenient to turn at the corner of the stairs, resulting in low rescue efficiency.

[0003] However, some existing wheelchairs that can climb stairs only have a sitting position and cannot provide a lying position for the patient, which makes it inconvenient to carry them to the ambulance. They have single functionality and need further improvement. Utility Model Content

[0004] The purpose of the utility model is to provide a stretcher chair for going downstairs before hospital emergency treatment in order to solve the above problems, as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a pre-hospital emergency downstairs stretcher chair, comprising a crawler walking chassis, a horizontal support plate and a lifting assembly for adjusting the height of the support plate are arranged above the crawler walking chassis;

[0007] A backrest is rotatably arranged on the support plate, a supporting assembly is arranged on the support plate, used to support the back of the backrest and adjust the angle of the backrest, an inclined pull rope is arranged between the back of the backrest and the support plate to prevent the backrest from tipping forward, and a restraint belt is arranged on the backrest, used to fix the patient's upper body on the backrest;

[0008] An extension plate is slidably arranged at the bottom of the support plate to support the patient's calf.

[0009] The above-mentioned pre-hospital emergency downstairs stretcher chair can be driven to walk on flat ground or on stairs by the crawler walking chassis. The device is tilted so that the crawler walking chassis contacts the stairs, and the crawler walking chassis can be used to drive the device up and down the stairs.

[0010] The patient is fixed to the backrest by a strap and the backrest is pulled by a drawstring to prevent the patient from leaning forward when going down the stairs.

[0011] When the device needs to be transferred to an ambulance together with the patient, the height of the support plate is lowered by the lifting assembly, which makes it easier to carry the device. Otherwise, since the height to which the nursing staff can lift the device is limited, the crawler walking chassis is likely to interfere with the ambulance compartment, affecting the carrying;

[0012] Then, the height of the top support assembly is lowered to make the backrest in a horizontal state, and the extension plate is pulled out from the bottom of the support plate to support the patient's calves so that the patient can lie flat.

[0013] Preferably, a seat cushion and two armrests are provided on the upper side of the support plate, and the two armrests are distributed on both sides of the seat cushion.

[0014] Preferably, two slide rails are symmetrically arranged at the bottom of the support plate, and an extension plate is slidably arranged between the two slide rails.

[0015] Preferably, a U-shaped rod is arranged around the side of the support plate, and the control switch of the crawler walking chassis is arranged on the U-shaped rod.

[0016] Preferably, a battery is provided on the crawler walking chassis, and the battery is electrically connected to the crawler walking chassis.

[0017] Preferably, a height-adjustable infusion stand is provided on the support plate.

[0018] Preferably, the infusion stand is vertically slidably arranged on a support plate, a fixing block is fixed on the support plate, bolts are threadedly connected to the fixing block, and ends of the bolts support the surface of the infusion stand.

[0019] Preferably, the top support assembly includes a screw, which is vertically penetrated on the support plate and threadedly connected to the support plate. A roller is rotatably arranged on the upper end of the screw, a limiting groove is arranged on the back of the backrest, and the roller and the limiting groove are clearance-matched. A handle is arranged on the lower end of the screw, and a guide rod is vertically slidably arranged on the support plate, and the upper end of the guide rod is connected to the roller.

[0020] Preferably, the lifting assembly includes a fixed plate and a crank, the fixed plate is fixedly set on the crawler walking chassis, screws are vertically rotatably set at the four corners of the fixed plate, threaded sleeves are threadedly connected to the surface of the screw, four threaded sleeves are distributed on both sides of the support plate, the threaded sleeve is fixed to the support plate, a fixed arm is rotatably set on the upper end of the threaded sleeve, the bottom of the fixed arm is fixed to the fixed plate, a sprocket is fixed on the surface of the screw, the four sprockets are connected by chain transmission, and the crank is fixed to the upper end of any one of the screws.

[0021] The beneficial effects are:

[0022] 1. The crawler chassis can drive the device to walk on the stairs, saving the physical strength of medical staff in carrying patients on stretchers in the corridor. The device can carry patients in a sitting position, thereby significantly reducing the length of the device and facilitating movement in narrow stairways. The height of the support plate can be lowered by the lifting assembly, so that it is convenient to carry the device together with the patient to the ambulance. The backrest can be adjusted to a horizontal state by the top support assembly, and then the extension plate can be pulled out from the bottom of the support plate to support the patient's calf so that the patient can lie flat. The device has the function of lying flat on a stretcher, can move on stairs, and also has the function of a wheelchair. The device is helpful for emergency work by setting rich functions;

[0023] 2. Fix the patient on the backrest with a restraint belt and pull the backrest with a pull rope to prevent the patient from leaning forward when going down the stairs, thus ensuring the patient's safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 This is a front view structural diagram of the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 3 It is a three-dimensional structural schematic diagram of the utility model from another viewing angle.

[0028] The following are the descriptions of the reference numerals:

[0029] 1. Crawler chassis; 2. Lifting assembly; 3. Fixed plate; 4. Screw; 5. Fixed arm; 6. Sprocket; 7. Chain; 8. Threaded sleeve; 9. Support plate; 10. Crank; 11. Armrest; 12. Cushion; 13. Backrest; 14. Restraint belt; 15. Top support assembly; 16. U-shaped rod; 17. Control switch; 18. Battery; 19. Roller; 20. Screw; 21. Guide rod; 22. Infusion stand; 23. Fixed block; 24. Bolt; 25. Extension plate; 26. Slide rail; 27. Pull rope. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0031] See also Figure 1-Figure 3 As shown, the utility model provides a pre-hospital emergency downstairs stretcher chair, comprising a crawler walking chassis 1, a horizontal support plate 9 and a lifting assembly 2 for adjusting the height of the support plate 9 are arranged above the crawler walking chassis 1;

[0032] A backrest 13 is rotatably provided on the support plate 9, a supporting assembly 15 is provided on the support plate 9, which is used to support the back of the backrest 13 and adjust the angle of the backrest 13, an inclined pull rope 27 is provided between the back of the backrest 13 and the support plate 9 to prevent the backrest 13 from tipping forward, and a restraint belt 14 is provided on the backrest 13, which is used to fix the patient's upper body on the backrest 13;

[0033] An extension plate 25 is slidably provided at the bottom of the support plate 9 to support the patient's calf.

[0034] As an optional implementation, a seat cushion 12 and two armrests 11 are provided on the upper side of the support plate 9 , and the two armrests 11 are distributed on both sides of the seat cushion 12 , and the armrests 11 are used to support the patient's forearms.

[0035] Two slide rails 26 are symmetrically arranged at the bottom of the support plate 9, and an extension plate 25 is slidably arranged between the two slide rails 26. When the patient needs to lie flat, the extension plate 25 is pulled out from the bottom of the support plate 9 to support the patient's calves. When the patient sits, the extension plate 25 is retracted to the bottom of the support plate 9.

[0036] A U-shaped rod 16 is arranged around the side of the support plate 9, and a control switch 17 of the crawler walking chassis 1 is arranged on the U-shaped rod 16. The U-shaped rod 16 is arranged to facilitate the caregiver to push and carry the device through the U-shaped rod 16, and the control switch 17 is arranged on the U-shaped rod 16 to facilitate the caregiver to control the crawler walking chassis 1.

[0037] A battery 18 is provided on the crawler chassis 1, and the battery 18 is electrically connected to the crawler chassis 1. The crawler chassis 1 can move forward, backward and turn. The crawler chassis 1 is a prior art, and its principle and structure are not described in detail here.

[0038] The support plate 9 is provided with an infusion stand 22 with adjustable height, and the infusion stand 22 is provided to facilitate infusion when the patient uses the device.

[0039] The infusion stand 22 is vertically slidably arranged on the support plate 9, a fixing block 23 is fixed on the support plate 9, a bolt 24 is threadedly connected to the fixing block 23, and the end of the bolt 24 supports the surface of the infusion stand 22;

[0040] The height of the infusion stand 22 can be adjusted according to specific usage requirements. The height is adjusted by vertically moving the infusion stand 22, and then the bolts 24 are rotated to support the infusion stand 22 so that the infusion stand 22 is fixed.

[0041] The top support assembly 15 includes a lead screw 20, which is vertically penetrated and arranged on the support plate 9, and the lead screw 20 is threadedly connected to the support plate 9, a roller 19 is rotatably arranged on the upper end of the lead screw 20, a limit groove is arranged on the back of the backrest 13, and the roller 19 is clearance-matched with the limit groove, a handle is arranged on the lower end of the lead screw 20, and a guide rod 21 is vertically slidably arranged on the support plate 9, and the upper end of the guide rod 21 is connected to the roller 19;

[0042] By turning the lead screw 20 by the handle, the lead screw 20 cooperates with the guide rod 21 to drive the roller 19 to move vertically. When the roller 19 moves upward, it pushes the backrest 13 to make the backrest 13 swing upward. As the backrest 13 swings upward, the pull rope 27 will gradually straighten. When the pull rope 27 is straightened, the backrest 13 is at the maximum angle and cannot be adjusted further. When the roller 19 moves downward, the backrest 13 automatically swings downward under the action of gravity. When the roller 19 drops to the lowest position, the backrest 13 will be in a horizontal state.

[0043] The lifting assembly 2 includes a fixed plate 3 and a crank 10. The fixed plate 3 is fixedly arranged on the crawler walking chassis 1. Screws 4 are vertically rotatably arranged at the four corners of the fixed plate 3. The surface of the screw 4 is threadedly connected with a threaded sleeve 8. The four threaded sleeves 8 are distributed on both sides of the support plate 9. The threaded sleeve 8 is fixed to the support plate 9. A fixed arm 5 is rotatably arranged on the upper end of the threaded sleeve 8. The bottom of the fixed arm 5 is fixed to the fixed plate 3. A sprocket 6 is fixed on the surface of the screw 4. The four sprockets 6 are connected by a chain 7. The crank 10 is fixed to the upper end of any one of the screws 4.

[0044] The screw rod 4 is rotated by the crank 10, and the four screw rods 4 are linked by the cooperation of the sprocket 6 and the chain 7. The cooperation of the four screw rods 4 can threadably drive the support plate 9 to rise and fall. The setting of the fixed arm 5 can improve the stability of the screw rod 4.

[0045] With the above structure, the crawler walking chassis 1 can drive the device to walk on flat ground, or walk on stairs. The device is tilted so that the crawler walking chassis 1 contacts the stairs, and the crawler walking chassis 1 can drive the device up and down the stairs.

[0046] The patient is fixed on the backrest 13 by the restraint belt 14, and the backrest 13 is pulled by the pull rope 27, so that the patient's body can be prevented from leaning forward when going down the stairs;

[0047] When the device needs to be transferred to an ambulance together with the patient, the height of the support plate 9 is lowered by the lifting assembly 2, which makes it easier to carry the device. Otherwise, since the height to which the nursing staff can lift the device is limited, the crawler walking chassis 1 is likely to interfere with the compartment of the ambulance, affecting the carrying;

[0048] Then, the height of the top support assembly 15 is lowered to make the backrest 13 in a horizontal state, and then the extension plate 25 is pulled out from the bottom of the support plate 9 to support the patient's calves so that the patient can lie flat.

[0049] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A stretcher chair for going downstairs before hospital emergency treatment, characterized in that: It comprises a crawler walking chassis (1), above which a horizontal support plate (9) and a lifting assembly (2) for adjusting the height of the support plate (9) are arranged; A backrest (13) is rotatably arranged on the support plate (9), a supporting assembly (15) is arranged on the support plate (9) for supporting the back of the backrest (13) and adjusting the angle of the backrest (13), an inclined pull rope (27) is arranged between the back of the backrest (13) and the support plate (9) to prevent the backrest (13) from falling forward, and a restraining belt (14) is arranged on the backrest (13) for fixing the upper body of the patient on the backrest (13); An extension plate (25) is slidably provided at the bottom of the support plate (9) for supporting the patient's calf.

2. A stretcher chair for pre-hospital emergency downstairs use according to claim 1, characterized in that: A seat cushion (12) and two armrests (11) are arranged on the upper side of the support plate (9), and the two armrests (11) are distributed on both sides of the seat cushion (12).

3. The stretcher chair for pre-hospital emergency downstairs use according to claim 1, characterized in that: Two slide rails (26) are symmetrically arranged at the bottom of the support plate (9), and an extension plate (25) is slidably arranged between the two slide rails (26).

4. The stretcher chair for pre-hospital emergency downstairs use according to claim 1, characterized in that: A U-shaped rod (16) is arranged around the side of the support plate (9), and a control switch (17) of the crawler walking chassis (1) is arranged on the U-shaped rod (16).

5. The stretcher chair for pre-hospital emergency downstairs use according to claim 1, characterized in that: A storage battery (18) is provided on the crawler walking chassis (1), and the storage battery (18) is electrically connected to the crawler walking chassis (1).

6. The stretcher chair for pre-hospital emergency downstairs use according to claim 1, characterized in that: The support plate (9) is provided with an infusion stand (22) whose height can be adjusted.

7. A stretcher chair for pre-hospital emergency downstairs use according to claim 6, characterized in that: The infusion stand (22) is vertically slidably arranged on a support plate (9), a fixing block (23) is fixed on the support plate (9), a bolt (24) is threadedly connected to the fixing block (23), and the end of the bolt (24) supports the surface of the infusion stand (22).

8. The stretcher chair for pre-hospital emergency downstairs use according to claim 1, characterized in that: The supporting assembly (15) comprises a lead screw (20), the lead screw (20) is vertically penetrated and arranged on the support plate (9), and the lead screw (20) is threadedly connected to the support plate (9), a roller (19) is rotatably arranged on the upper end of the lead screw (20), a limiting groove is arranged on the back of the backrest (13), and the roller (19) and the limiting groove are clearance-matched, a handle is arranged on the lower end of the lead screw (20), and a guide rod (21) is vertically slidably arranged on the support plate (9), and the upper end of the guide rod (21) is connected to the roller (19).

9. The stretcher chair for pre-hospital emergency downstairs use according to claim 1, characterized in that: The lifting assembly (2) comprises a fixing plate (3) and a crank (10), wherein the fixing plate (3) is fixedly arranged on the crawler walking chassis (1), and screw rods (4) are vertically rotatably arranged at the four corners of the fixing plate (3), and a threaded sleeve (8) is threadedly connected to the surface of the screw rod (4), and the four threaded sleeves (8) are evenly distributed on both sides of a support plate (9), and the threaded sleeve (8) is fixed to the support plate (9), and a fixing arm (5) is rotatably arranged on the upper end of the threaded sleeve (8), and the bottom of the fixing arm (5) is fixed to the fixing plate (3), and a sprocket (6) is fixed on the surface of the screw rod (4), and the four sprockets (6) are connected by a chain (7) for transmission, and the crank (10) is fixed to the upper end of any one of the screw rods (4).