Foldable medical rescue stretcher facilitating stair climbing

Abstract

The application relates to the technical field of rescue stretchers, and provides a folding medical rescue stretcher convenient for climbing stairs, which comprises a stretcher main body; in the application, the left upper corner pinch plate is pulled downward to drive the deflection of a rotating rod, the deflection of the rotating rod drives the deflection of a clamping block, the clamping block is separated from a pull rod in the fourth sliding groove at the top end, at this time, the pull rod is pulled to move along the fourth sliding groove and contact the inclined surface of the clamping block at the other end, in the moving process of the pull rod, a limiting ring gradually rises from the stretcher main body, then continues to move, the pull rod extrudes the inclined surface of the clamping block, the clamping block is gradually deflected and extrudes a first spring, then the pull rod passes through the clamping block and contacts the plane of the clamping block, and the limiting is completed; at this time, the limiting ring on one side is in the raised state, then the operation is repeated to raise the limiting ring on the other side, one limiting ring is located at the shoulder, the other limiting ring is located at the armpit, and the two limiting rings are closed to each other and can fix the two shoulders and the legs of a patient, so that deviation during movement is avoided.

Description

Technical Field

[0001] This invention relates to the field of rescue stretcher technology, and in particular to a foldable medical rescue stretcher that is easy to carry up stairs. Background Technology

[0002] A medical rescue stretcher is a medical device capable of supporting the weight of a patient and allowing the patient to remain stable during movement. It typically consists of a sturdy metal frame and a flexible stretcher surface, and sometimes also includes handrails, a bed surface, wheels, casters, supports, and securing straps. For ease of use, it incorporates a folding design, allowing the stretcher to be easily folded up when not in use to save space and facilitate carrying.

[0003] As disclosed in CN113662760A, this invention relates to the field of stretcher technology, and more particularly to a foldable disaster area medical rescue stretcher that is easy to carry up stairs. It includes a folding mechanism, a locking mechanism, a storage mechanism, and a fixing mechanism. The folding mechanism is equipped with a locking mechanism and a storage mechanism, and the fixing mechanism is located on a rotating frame. Through the cooperation of a second sliding frame and a third wedge block, the rotating frame and its devices can be prevented from being accidentally folded during patient transport, further ensuring stability during patient transport and achieving the effect of effectively maintaining balance while using this equipment to transport patients.

[0004] However, in the existing technology, after the staff lifts the patient onto the stretcher, they pull the straps, which extend and are secured by buckles to wrap the patient and prevent the patient from falling during the movement. However, the straps are wrapped around the reel, and after they extend, they are secured by the locking blocks. There is a large gap between the locking blocks, the reel, and the patient, causing the patient to move and shift within the gap. As a result, the patient's posture on the stretcher becomes deformed, which can aggravate the injury. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the prior art where the strap is wrapped around the winding drum, and after it stretches, it is fixed by a locking block. However, there is a large gap between the locking block and the position of the winding drum and the patient, which causes the patient to move and shift within the gap. As a result, the patient's posture on the stretcher is deformed, which will aggravate the injury.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a foldable medical rescue stretcher that is easy to carry up stairs, comprising a stretcher body, the stretcher body being divided into two parts at the center, handles being fixedly connected to both ends of the stretcher body, a hook being fixedly connected to one side of the top of one handle, a first slot being formed at the top of the other handle, a movable groove being formed on one side inside the first slot, the movable groove penetrating one side of the handle, a locking component being provided inside the movable groove, a first sliding groove being formed on both sides of the top center of the stretcher body, a second sliding groove being formed in the middle of both sides of the stretcher body, a third sliding groove being formed on the side of the stretcher body located inside the first sliding groove, a first limiting component being provided on the side of the bottom of the stretcher body that is far apart from each other, a second support storage box being fixedly connected to both sides of the middle of the bottom of the stretcher body, and a second limiting component being provided on the side of the stretcher body near the first sliding groove.

[0007] In a preferred embodiment, the first limiting component includes a first support storage box. Two sets of the first support storage boxes are provided. Each set of the first support storage boxes is fixed to one side of the bottom of the stretcher body that is far apart from each other. The length and width directions of the first support storage box on one side are consistent with the length and width directions of the stretcher body, while the other side is opposite. The two sets of first support storage boxes are set in different directions, which is beneficial for the limiting ring to better fit the legs and shoulders after it deflects out.

[0008] In a preferred embodiment, a fourth sliding groove is provided on one side of the first support storage box. There are two fourth sliding grooves, one above the other. A pull rod is slidably connected inside the fourth sliding groove. One end of the pull rod inside the first support storage box is fixedly connected to a limiting ring. The limiting rings slide alternately, and the top ends of the limiting rings contact each other. After the staff unfolds the stretcher body, it is fixed by a snap-fit ​​device. Then, the stretcher body is placed flat on the ground through the first and second support storage boxes. The first and second support storage boxes provide support. When limiting, the pull rod drives the limiting rings to deflect outward, wrapping and limiting the patient's shoulders and legs.

[0009] In a preferred embodiment, the first support storage box is rotatably connected to the top and bottom of the fourth slide groove. A locking block is fixedly connected to the side of the locking block near the fourth slide groove. An inclined surface is provided on the side of the locking block away from the rotating rod, and a flat surface is provided on the back of the inclined surface. The pull rod is slidably connected to the inclined surface of the locking block and engages with the flat surface. When the pull rod moves out from the flat surface of the locking block, the pinch plate needs to be deflected to deflect the locking block. When it enters the flat surface of the locking block, the pinch plate does not need to be deflected, and the pull rod continues to move and presses the inclined surface of the locking block, causing the inclined surface of the locking block to be pressed and drive the locking block to deflect, so that the pull rod enters the flat surface of the locking block.

[0010] In a preferred embodiment, a pinch plate is fixedly connected to the side of the rotating rod away from the locking block. The pinch plate is the same length as the pull rod. A first spring is fixedly connected to the side of the locking blocks away from each other. A fixing plate is fixedly connected to the end of the first spring away from the locking block. The fixing plate is fixedly connected to the first support storage box. Pulling the pinch plate causes the locking block to deflect around the rotating rod as the axis. The deflection of the locking block compresses the first spring, causing the first spring to compress. The deflection of the locking block can lose its fixation to the pull rod.

[0011] In a preferred embodiment, the second limiting component includes a limiting clamping plate and a first fixing rod. The limiting clamping plate is slidably connected to a first sliding groove, and the first fixing rod is located inside a second sliding groove. The limiting clamping plate penetrates the stretcher body and is located on the side of the first sliding groove near the first fixing rod, with its top end flush with the stretcher body. A pull ring is fixedly connected to the end of the first fixing rod away from the stretcher body, and a push plate is fixedly connected to the end of the first fixing rod near the pull ring. The push plate is located inside the second sliding groove and slidably connected to the second sliding groove. Next, second springs are fixedly connected at equal intervals on the side of the push plate away from the first fixed rod. The second springs are fixedly connected to the stretcher body. The limiting clamping plate passes through the stretcher body and is located at the first slide groove. The top of the limiting clamping plate is level with the stretcher body. When the worker pulls the limiting clamping plate upward, the limiting clamping plate extends out of the first slide groove. Then, the pull ring is pulled, which drives the first fixed rod to move. The first fixed rod pulls the push plate, and the movement of the push plate pulls the second spring, which pushes the first movable head. The push plate is gradually stretched and finally engages with the limiting clamping plate through the limiting block.

[0012] In a preferred embodiment, a first movable head is fixedly connected to both ends of the push plate, a first push rod is rotatably connected to the middle of the first movable head, a second movable head is rotatably connected to the end of the first push rod away from the push plate, a connecting rod is fixedly connected to the side of the second movable head away from the first push rod, a fixed push rod is fixedly connected to the end of the connecting rod away from the second movable head, and limit blocks are equidistantly fixedly connected to the side of the fixed push rod near the limiting clamping plate. The limit blocks are engaged with the bottom end of the limiting clamping plate, and the fixed push rod and the limit blocks are connected to the third sliding groove. The sliding connection allows the first movable head to move and push the first push rod, which in turn pushes the second movable head. The second movable head then moves away from the push plate, causing the limiting clamping plate to move along the trajectory of the first slide groove. Ultimately, this clamping plate compresses and limits the patient's waist and buttocks. Therefore, the position of the limiting clamping plate can be adjusted according to the patient's body shape. Once a certain position is reached, the pull ring is released, and the second spring returns, causing the push plate to return to its original position. Subsequently, the first push rod pulls the second movable head back, causing the limiting block to lock onto the bottom end of the limiting clamping plate, thus fixing the limiting clamping plate in place.

[0013] In a preferred embodiment, the locking assembly includes a movable seat located inside and slidably connected to a movable groove. A third movable head is fixedly connected to one side of the movable seat that is away from the other. A locking plate is rotatably connected to the middle of the third movable head. A second fixing rod is fixedly connected to one end of the locking plate near the third movable head and on the side away from the other. The second fixing rod is slidably connected to a handle. A movable plate is fixedly connected to the end of the second fixing rod away from the locking plate. The locking component in the middle of the stretcher body is released, and the stretcher body is folded in half. When the hook is inserted into the first slot, the moving plate is pulled and moved to one side of the first slot. The moving plate moves the second fixed rod, which in turn causes the plate to deflect around the third movable head. The third movable head then causes the moving seat to slide within the moving slot. The plate stretches the third spring, causing the end of the plate near the second slot to tilt upwards. When the plate reaches the first slot, the moving plate is released, and the third spring rebounds, causing the plate to return to a horizontal position. The plate then locks the hook in place through the second slot, securing the hook. At this point, the stretcher body remains folded for easy transport.

[0014] In a preferred embodiment, a second slot is provided in the middle of the side of the card plate away from the third movable head. The second slot engages with the hook. A third spring is fixedly connected to the side of the card plate away from the second fixed rod. The end of the third spring away from the card plate is fixedly connected to the movable seat. The movement of the second fixed rod causes the card plate to deflect, so that the second slot moves to the hook. The hook is engaged through the second slot, thereby fixing the stretcher body.

[0015] The beneficial effects of this invention are as follows:

[0016] In this invention, the worker places the injured person on the stretcher body and pulls down the upper left corner pinch plate. The pinch plate causes the rotating rod to deflect, which in turn causes the locking block to deflect. The locking block separates from the pull rod inside the fourth sliding groove at the top. At this time, the pull rod is pulled, and the pull rod moves along the fourth sliding groove to contact the inclined surface of the locking block at the other end. During the movement of the pull rod, the limiting ring gradually rises from the stretcher body and then continues to move. The pull rod presses against the inclined surface of the locking block, and the locking block gradually deflects and presses against the first spring. The first spring gradually compresses, and then the pull rod passes through the locking block and contacts the plane of the locking block, completing the limiting. At this time, the limiting ring on one side is in the raised state. Then the operation is repeated to raise the limiting ring on the other side. One limiting ring is located at the shoulder, and the other limiting ring is located under the armpit. The two limiting rings close together, which can fix the patient's shoulders and legs, thereby preventing displacement during movement.

[0017] In this invention, the operator pulls the limiting clamping plate upwards, causing it to extend from the first slide groove. Then, the operator pulls the pull ring, which moves the first fixed rod. The first fixed rod pulls the push plate, which in turn pulls the second spring, pushing the first movable head. The push plate is gradually stretched, while the first movable head moves, pushing the first push rod. The first push rod then moves, pushing the second movable head, which begins to move away from the push plate. At this point, the limiting clamping plate moves along the trajectory of the first slide groove, ultimately compressing and limiting the patient's waist and buttocks. Therefore, the position of the limiting clamping plate can be adjusted according to the patient's body shape. Once a certain position is reached, the pull ring is released, and the second spring springs back, causing the push plate to return to its original position. Then, the first push rod pulls the second movable head back, causing the limiting block to lock onto the bottom end of the limiting clamping plate, thus fixing the limiting clamping plate in place.

[0018] In this invention, the locking piece in the middle of the stretcher body is loosened, and the stretcher body is folded in half. At this time, the hook is inserted into the first slot. The moving plate is pulled and moved to one side of the first slot. The moving plate drives the second fixing rod to move. The second fixing rod drives the plate to deflect around the third movable head as the center, and the moving seat slides in the moving slot through the third movable head. The plate drives the third spring to stretch. At this time, the end of the plate near the second slot tilts up. When the plate reaches the first slot, the moving plate is released, and the third spring rebounds, causing the plate to return to a horizontal state. The plate then locks the hook through the second slot, fixing the hook. At this time, the stretcher body remains folded, making it easy to move. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a foldable medical rescue stretcher that is easy to climb stairs, provided by the present invention;

[0020] Figure 2 A schematic diagram of a foldable medical rescue stretcher that is easy to carry up stairs, provided by the present invention;

[0021] Figure 3 This invention provides a foldable medical rescue stretcher that is easy to carry up stairs. Figure 2 Enlarged structural diagram at point A in the diagram;

[0022] Figure 4 A schematic diagram of the second limiting component structure of a foldable medical rescue stretcher that is easy to climb stairs, provided by the present invention;

[0023] Figure 5 This invention provides a foldable medical rescue stretcher that is easy to carry up stairs. Figure 4 Enlarged structural diagram at point B in the diagram;

[0024] Figure 6A schematic diagram of the first limiting component structure of a foldable medical rescue stretcher that is easy to climb stairs, provided by the present invention;

[0025] Figure 7 A schematic diagram of the left limiting ring structure of a foldable medical rescue stretcher that is easy to climb stairs, provided by the present invention;

[0026] Figure 8 A schematic diagram of the right limiting ring structure of a foldable medical rescue stretcher that is easy to climb stairs, provided by the present invention;

[0027] Legend:

[0028] 1. Stretcher; 11. Handle; 111. First slot; 112. Moving slot; 12. Hook; 13. First slide groove; 14. Second slide groove; 15. Third slide groove; 21. First support storage box; 22. Fourth slide groove; 23. Pull rod; 24. Locking block; 25. Rotating rod; 26. Pinch plate; 27. First spring; 28. Fixing plate; 29. ​​Limiting ring; 3. Second support storage box; 41. Limiting clamping plate; 42. First fixing rod; 43. Pull ring; 44. Push plate; 45. Second spring; 46. First movable head; 47. First push rod; 48. Second movable head; 49. Connecting rod; 410. Fixed push rod; 411. Limiting block; 51. Moving seat; 52. Third movable head; 53. Locking plate; 54. Second fixing rod; 55. Moving plate; 56. Third spring; 57. Second slot. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-8This invention provides a technical solution: a foldable medical rescue stretcher that is easy to carry up stairs, including a stretcher body 1, which is divided into two parts at the center. Handles 11 are fixedly connected to both ends of the stretcher body 1. A hook 12 is fixedly connected to one side of the top of one handle 11, and a first slot 111 is formed at the top of the other handle 11. A movable groove 112 is formed on one side inside the first slot 111, penetrating one side of the handle 11. A locking component is provided inside the movable groove 112. First sliding grooves 13 are formed on both sides of the top center of the stretcher body 1, second sliding grooves 14 are formed in the middle of both sides of the stretcher body 1, and a third sliding groove 15 is formed on the side of the stretcher body 1 located inside the first sliding groove 13. A first limiting component is provided on the side of the bottom of the stretcher body 1 that is far apart from each other. A second support storage box 3 is fixedly connected to both sides of the middle of the bottom of the stretcher body 1, and a second limiting component is provided on the side of the stretcher body 1 closest to the first sliding groove 13.

[0031] like Figure 1-8 As shown, the first limiting component includes a first support storage box 21. Two sets of first support storage boxes 21 are provided, each set fixed to a side of the bottom of the stretcher body 1 that is far apart from each other. One side of the first support storage box 21 has its length and width directions aligned with the length and width directions of the stretcher body 1, while the other side is opposite. A fourth sliding groove 22 is provided on one side of each first support storage box 21. There are two fourth sliding grooves 22, one above the other. A pull rod 23 is slidably connected inside each fourth sliding groove 22. One end of the pull rod 23 inside the first support storage box 21 is fixedly connected to a limiting ring 29. The limiting rings 29 slide alternately, and their top ends contact each other. A supporting storage box 21 is rotatably connected to the top and bottom of the fourth slide groove 22. A locking block 24 is fixedly connected to the side of the rotating rod 25 near the fourth slide groove 22. The side of the locking block 24 away from the rotating rod 25 is provided with an inclined surface, and the back of the inclined surface is provided with a flat surface. The pull rod 23 is slidably connected to the inclined surface of the locking block 24 and engages with the flat surface. A pinch plate 26 is fixedly connected to the side of the rotating rod 25 away from the locking block 24. The pinch plate 26 is the same length as the pull rod 23. A first spring 27 is fixedly connected to the side of the locking block 24 away from each other. A fixing plate 28 is fixedly connected to the end of the first spring 27 away from the locking block 24. The fixing plate 28 is fixedly connected to the first supporting storage box 21.

[0032] In this embodiment, the staff places the injured person on the stretcher body 1 and pulls down the upper left corner pinch plate 26. The pinch plate 26 causes the rotating rod 25 to deflect, which in turn causes the locking block 24 to deflect. The locking block 24 separates from the pull rod 23 inside the fourth slide groove 22 at the top. At this time, the pull rod 23 is pulled, and the pull rod 23 moves along the fourth slide groove 22 and contacts the inclined surface of the locking block 24 at the other end. During the movement of the pull rod 23, the limiting ring 29 gradually rises from the stretcher body 1 and then continues to move. The pull rod 23 presses against the inclined surface of the locking block 24, locking... Block 24 gradually deflects and compresses the first spring 27, which in turn gradually compresses. Then, the pull rod 23 passes through the locking block 24 and contacts the plane of the locking block 24, completing the limiting. At this time, the limiting ring 29 on one side is in the raised state. Then, the operation is repeated to raise the limiting ring 29 on the other side. One limiting ring 29 is located at the shoulder, and the other limiting ring 29 is located at the armpit. The two limiting rings 29 close together, which can fix the patient's shoulders and legs and prevent the patient's body from shifting due to a large gap between the limiting components, which could lead to the aggravation of the injury.

[0033] like Figure 1-8 As shown, the second limiting assembly includes a limiting clamping plate 41 and a first fixing rod 42. The limiting clamping plate 41 is slidably connected to the first slide groove 13. The first fixing rod 42 is located inside the second slide groove 14. The limiting clamping plate 41 penetrates the stretcher body 1 and is located on the side of the first slide groove 13 near the first fixing rod 42. The top of the limiting clamping plate 41 is flush with the stretcher body 1. A pull ring 43 is fixedly connected to the end of the first fixing rod 42 away from the stretcher body 1. A push plate 44 is fixedly connected to the end of the first fixing rod 42 near the pull ring 43. The push plate 44 is located inside the second slide groove 14 and is slidably connected to the second slide groove 14. Second springs are equidistantly arranged and fixedly connected to the side of the push plate 44 away from the first fixing rod 42. 45. The second spring 45 is fixedly connected to the stretcher body 1. The two ends of the push plate 44 are fixedly connected to the first movable head 46. The middle of the first movable head 46 is rotatably connected to the first push rod 47. The end of the first push rod 47 away from the push plate 44 is rotatably connected to the second movable head 48. The side of the second movable head 48 away from the first push rod 47 is fixedly connected to the connecting rod 49. The end of the connecting rod 49 away from the second movable head 48 is fixedly connected to the fixed push rod 410. The side of the fixed push rod 410 near the limiting clamping plate 41 is equidistantly connected to the limiting block 411. The limiting block 411 is engaged with the bottom end of the limiting clamping plate 41. The fixed push rod 410 and the limiting block 411 are slidably connected to the third slide groove 15.

[0034] In this embodiment, the worker pulls the limiting clamping plate 41 upwards, causing it to extend from the first sliding groove 13. Then, the worker pulls the pull ring 43, which moves the first fixed rod 42. The first fixed rod 42 pulls the push plate 44, which in turn pulls the second spring 45, pushing the first movable head 46. The push plate 44 is gradually stretched, while the first movable head 46 moves, pushing the first push rod 47. The first push rod 47 then moves, pushing the second movable head 48, which begins to move away from the push plate 44. The limiting clamping plate 41 moves along the trajectory of the first slide groove 13, eventually squeezing and limiting the patient's waist and buttocks. Therefore, the position of the limiting clamping plate 41 can be adjusted according to the patient's body shape. When a certain position is reached, the pull ring 43 is released, the second spring 45 springs back and drives the push plate 44 back to its original position. Then, the first push rod 47 pulls the second movable head 48 back, so that the limiting block 411 is locked at the bottom of the limiting clamping plate 41, thus fixing the limiting clamping plate 41. After the patient is fixed, the staff can lift the patient out by moving the handle 11.

[0035] like Figure 1-8 As shown, the snap-fit ​​assembly includes a movable base 51, which is located inside the movable groove 112 and slidably connected to it. A third movable head 52 is fixedly connected to the side of the movable base 51 that is away from each other. A snap-fit ​​plate 53 is rotatably connected to the middle of the third movable head 52. A second fixed rod 54 is fixedly connected to the side of the snap-fit ​​plate 53 that is close to the third movable head 52 and away from each other. The second fixed rod 54 is slidably connected to the handle 11. A movable plate 55 is fixedly connected to the end of the second fixed rod 54 that is away from the snap-fit ​​plate 53. A second snap-fit ​​groove 57 is provided in the middle of the side of the snap-fit ​​plate 53 that is away from the third movable head 52. The second snap-fit ​​groove 57 snaps with the snap-fit ​​hook 12. A third spring 56 is fixedly connected to the side of the snap-fit ​​plate 53 that is away from the second fixed rod 54. The end of the third spring 56 that is away from the snap-fit ​​plate 53 is fixedly connected to the movable base 51.

[0036] In this embodiment, the snap-fit ​​connector in the middle of the stretcher body 1 is loosened (the snap-fit ​​connector is existing technology, such as the cooperation between a fixing plate and a pin, which will not be described in this case), and the stretcher body 1 is folded in half. At this time, the hook 12 is inserted into the inside of the first slot 111. The moving plate 55 is pulled and moved to one side of the first slot 111. The moving plate 55 drives the second fixing rod 54 to move. The second fixing rod 54 drives the snap plate 53 to deflect around the third movable head 52 as the center, and drives the moving seat 51 to slide in the moving slot 112 through the third movable head 52. The snap plate 53 drives the third spring 56 to stretch. At this time, the end of the snap plate 53 near the second slot 57 is raised. When the snap plate 53 reaches the first slot 111, the moving plate 55 is released. The third spring 56 rebounds and drives the snap plate 53 back to the horizontal state. The snap plate 53 locks the hook 12 through the second slot 57 and fixes the hook 12. At this time, the stretcher body 1 is kept in a folded state, which is convenient for moving.

[0037] Working principle: First, the staff places the injured person on the stretcher body 1 and pulls down the upper left corner pinch plate 26. The pinch plate 26 causes the rotating rod 25 to deflect, which in turn causes the locking block 24 to deflect. The locking block 24 separates from the pull rod 23 inside the fourth slide groove 22 at the top. At this time, the pull rod 23 is pulled, and it moves along the fourth slide groove 22 to contact the inclined surface of the locking block 24 at the other end. During the movement of the pull rod 23, the limiting ring 29 gradually rises from the stretcher body 1 and continues to move. The pull rod 23 presses against the inclined surface of the locking block 24, and the locking block 24 gradually deflects and presses against the first spring 27. The first spring 27 gradually compresses, and then the pull rod 23 passes through the locking block 24 and contacts the plane of the locking block 24, completing the limiting. At this time, one side... With the limiting ring 29 in the raised state, the operation is repeated to raise the limiting ring 29 on the other side. One limiting ring 29 is located at the shoulder, and the other limiting ring 29 is located under the armpit. The two limiting rings 29 close together to fix the patient's shoulders and legs, thus preventing displacement during movement. Then, the operator pulls the limiting clamping plate 41 upward, and the limiting clamping plate 41 extends from the first slide groove 13. Then, the pull ring 43 is pulled, and the pull ring 43 drives the first fixing rod 42 to move. The first fixing rod 42 pulls the push plate 44, and the movement of the push plate 44 pulls the second spring 45, which pushes the first movable head 46. The push plate 44 is gradually stretched, and the movement of the first movable head 46 pushes the first push rod 47. The movement of the first push rod 47 pushes the second movable head 46. When the moving head 48 is pushed, the second moving head 48 begins to move away from the push plate 44. At this time, the limiting clamping plate 41 moves along the trajectory of the first slide groove 13, ultimately squeezing and limiting the patient's waist and buttocks. Therefore, the position of the limiting clamping plate 41 can be adjusted according to the patient's body shape. When a certain position is reached, the pull ring 43 is released, and the second spring 45 springs back, driving the push plate 44 back to its original position. Then, the first push rod 47 pulls the second moving head 48 back, causing the limiting block 411 to lock onto the bottom end of the limiting clamping plate 41, thus fixing the limiting clamping plate 41. After the patient is fixed, the staff can lift the patient out by moving the handle 11. When folding is required, the locking piece in the middle of the stretcher body 1 is released, and the stretcher body 1 is folded in half. At this time, the hook 12 is inserted into the first slot 111. The moving plate 55 is pulled and moved to one side of the first slot 111. The moving plate 55 drives the second fixed rod 54 to move. The second fixed rod 54 drives the plate 53 to deflect around the third movable head 52. The third movable head 52 drives the moving seat 51 to slide in the moving slot 112. The plate 53 drives the third spring 56 to stretch. At this time, the end of the plate 53 near the second slot 57 is raised. When the plate 53 reaches the first slot 111, the moving plate 55 is released. The third spring 56 rebounds and drives the plate 53 back to the horizontal state. The plate 53 locks the hook 12 through the second slot 57 and fixes the hook 12. At this time, the stretcher body 1 remains folded, which is convenient for moving.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A foldable medical rescue stretcher that is easy to carry up stairs, comprising a stretcher body (1), characterized in that: The stretcher body (1) is divided into two parts at its center. Handles (11) are fixedly connected to both ends of the stretcher body (1). A hook (12) is fixedly connected to one side of the top of one end of the handle (11). A first slot (111) is opened at the top of the other end of the handle (11). A moving groove (112) is opened on one side inside the first slot (111). The moving groove (112) penetrates one side of the handle (11). A locking assembly is provided inside the moving groove (112). 1) A first sliding groove (13) is provided on both sides of the top center, a second sliding groove (14) is provided on the middle of both sides of the stretcher body (1), a third sliding groove (15) is provided on one side of the stretcher body (1) located inside the first sliding groove (13), a first limiting component is provided on the side of the bottom of the stretcher body (1) that is far apart from each other, a second support storage box (3) is fixedly connected to both sides of the middle of the bottom of the stretcher body (1), and a second limiting component is provided on the side of the stretcher body (1) close to the first sliding groove (13); The first limiting component includes a first support storage box (21), and a fourth groove (22) is provided on one side of the first support storage box (21). The first support storage box (21) is rotatably connected to the top and bottom of the fourth slide groove (22). The rotating rod (25) is fixedly connected to the side of the rotating rod (25) near the fourth slide groove (22). The side of the locking block (24) away from the rotating rod (25) is provided with an inclined surface, and the back of the inclined surface is provided with a flat surface. The inside of the fourth slide groove (22) is slidably connected to a pull rod (23). The pull rod (23) is slidably connected to the inclined surface of the locking block (24) and is locked to the flat surface. A pinch plate (26) is fixedly connected to the side of the rotating rod (25) away from the locking block (24). The pinch plate (26) is the same length as the pull rod (23). A first spring (27) is fixedly connected to the side of the locking blocks (24) away from each other. A fixing plate (28) is fixedly connected to the end of the first spring (27) away from the locking block (24). The fixing plate (28) is fixedly connected to the first support storage box (21). The second limiting component includes a limiting clamping plate (41) and a first fixing rod (42). The limiting clamping plate (41) is slidably connected to the first slide groove (13). The first fixing rod (42) is located inside the second slide groove (14). The limiting clamping plate (41) passes through the stretcher body (1) and is located on the side of the first slide groove (13) near the first fixing rod (42). The top of the limiting clamping plate (41) is flush with the stretcher body (1). A pull ring (43) is fixedly connected to the end of the first fixing rod (42) away from the stretcher body (1). A push plate (44) is fixedly connected to the end of the first fixing rod (42) near the pull ring (43). The push plate (44) is located inside the second slide groove (14) and is slidably connected to the second slide groove (14). A second spring (45) is equidistantly arranged and fixedly connected to the side of the push plate (44) away from the first fixing rod (42). The second spring (45) is fixedly connected to the stretcher body (1). The push plate (44) is fixedly connected to two ends of a first movable head (46). The middle of the first movable head (46) is rotatably connected to a first push rod (47). The end of the first push rod (47) away from the push plate (44) is rotatably connected to a second movable head (48). The side of the second movable head (48) away from the first push rod (47) is fixedly connected to a connecting rod (49). The end of the connecting rod (49) away from the second movable head (48) is fixedly connected to a fixed push rod (410). The fixed push rod (410) is equidistantly connected to a limit block (411) on the side near the limit clamping plate (41). The limit block (411) is engaged with the bottom end of the limit clamping plate (41), and the fixed push rod (410) and the limit block (411) are slidably connected to the third slide groove (15).

2. The foldable medical rescue stretcher for easy climbing stairs according to claim 1, characterized in that: The first support storage box (21) is provided in two sets. Each set of the first support storage box (21) is fixed to the bottom of the stretcher body (1) on a side that is far apart from each other. The length and width of one side of the first support storage box (21) are consistent with the length and width of the stretcher body (1), while the other side is opposite.

3. A foldable medical rescue stretcher that is easy to carry up stairs according to claim 2, characterized in that: There are two fourth slide grooves (22), one above the other. The end of the pull rod (23) located inside the first support storage box (21) is fixedly connected to a limiting ring (29). The limiting rings (29) slide alternately, and the tops of the limiting rings (29) contact each other.

4. A foldable medical rescue stretcher that is easy to carry up stairs according to claim 3, characterized in that: The snap-fit ​​assembly includes a movable base (51), which is located inside the movable groove (112) and slidably connected to the movable groove (112). A third movable head (52) is fixedly connected to one side of the movable base (51) that is far away from each other. A locking plate (53) is rotatably connected to the middle of the third movable head (52). A second fixing rod (54) is fixedly connected to one end of the locking plate (53) near the third movable head (52) and to one side that is far away from each other. The second fixing rod (54) is slidably connected to the handle (11). A movable plate (55) is fixedly connected to one end of the second fixing rod (54) that is far away from the locking plate (53).

5. A foldable medical rescue stretcher for easy climbing stairs according to claim 4, characterized in that: The card plate (53) has a second slot (57) in the middle of the side away from the third movable head (52). The second slot (57) is engaged with the hook (12). A third spring (56) is fixedly connected to the side of the card plate (53) away from the second fixed rod (54). The end of the third spring (56) away from the card plate (53) is fixedly connected to the movable seat (51).

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