Patient transfer device

Abstract

The invention provides a patient transfer device. The patient transfer device comprises a base, a cross beam, a mounting seat and an adjusting mechanism, the two long edges of a bed sheet are clamped through the multiple clamping assemblies, then the cross beam is driven to ascend, the bed sheet can be driven to ascend through the multiple clamping assemblies, and therefore a patient on the bed sheet ascends, and then the two rotating rods are driven to rotate oppositely through the adjusting assembly; the two groups of rotating rods at one end rotate upwards to drive one end of the bed sheet to rotate to support the back of the patient to get up, and the two groups of rotating rods at the other end rotate downwards to drive the other end of the bed sheet to rotate to cancel support to the shanks of the patient, so that the patient is converted from a supine position to a sitting position; then the mounting base is driven to move to enable the patient to move from the position above the sickbed to the position above the wheelchair, the cross beam is driven to descend to enable the patient to fall on the wheelchair, finally, the patient can be transferred from the sickbed to the wheelchair by canceling clamping of the multiple clamping assemblies on the bed sheet, the patient can be conveniently transferred from the sickbed to the wheelchair, and the practicability of the device is improved.

Description

Technical Field

[0001] This invention specifically relates to a patient transfer device. Background Technology

[0002] Currently, for patients with more severe conditions, limited mobility, or even coma, these patients usually need to be transferred back and forth between wards, examination rooms, and operating rooms. In order to reduce the workload of medical staff and avoid causing secondary harm to patients, transfer devices are usually used to transfer patients from their beds to trolleys or wheelchairs.

[0003] For example, Chinese patent application number 202211387406.0 discloses a self-clamping patient lifting device, including two arc-shaped clamps with opposite openings on the left and right sides, capable of lifting the patient from below. The upper ends of the two clamps are hinged together, and each clamp has a counterweight plate connected to its upper end. The counterweight plate bends upward from below and passes through the opposite clamp. The clamp has a rotating groove corresponding to the counterweight plate on the opposite clamp. The free ends of the two counterweight plates are connected to a rope mechanism, which can drive the two counterweight plates to move closer to each other to make the clamp lift the patient. The rope mechanism is also connected to a moving mechanism that moves the patient.

[0004] Most existing patient transfer devices are functionally simple, only allowing patients to be transferred from a bed to a trolley while remaining in a supine position. This makes it inconvenient to transfer patients from a bed to a wheelchair, reducing the device's practicality. Therefore, to address the aforementioned technical problems, a new patient transfer device is proposed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a patient transfer device that facilitates the transfer of patients from hospital beds to wheelchairs, thereby improving the device's practicality.

[0006] A patient transfer device, comprising: The base has two sets arranged at intervals; A crossbeam, capable of being raised and lowered vertically, is mounted on the two sets of bases. The mounting base is slidably mounted on the crossbeam along the width of the hospital bed, and both ends of the mounting base are vertically equipped with connecting plates; and The adjustment mechanism includes a fixed rod, a rotating rod, an adjustment component, and a clamping component at the bottom of each of the two sets of connecting plates. The fixed rod is arranged along the length of the bed and connected to the bottom of the connecting plate. The rotating rod is hinged to both ends of the fixed rod. The adjustment component connects the fixed rod and the two sets of rotating rods and drives the two sets of rotating rods to rotate in opposite directions. The clamping component is provided on the fixed rod and the two sets of rotating rods and is used to clamp the long side of the bed sheet.

[0007] The beneficial effects of the aforementioned patient transfer device are as follows: In use, multiple clamping components hold the two long sides of the bed sheet, and then driving the crossbeam upwards causes the bed sheet to rise, thus raising the patient on the bed sheet. Then, by adjusting the components, two sets of rotating rods rotate in opposite directions. At this time, the two sets of rotating rods at one end rotate upwards, causing one end of the bed sheet to rotate to support the patient's back and facilitate sitting up, while the two sets of rotating rods at the other end rotate downwards, causing the other end of the bed sheet to rotate to remove support for the patient's lower legs, thus changing the patient from a supine position to a sitting position. Then, driving the mounting base to move the patient from above the hospital bed to above the wheelchair, and driving the crossbeam to lower the patient onto the wheelchair. Finally, by releasing the clamping components from the bed sheet, the patient can be transferred from the hospital bed to the wheelchair, facilitating patient transfer from the hospital bed to the wheelchair and improving the practicality of the device.

[0008] In one embodiment, the adjustment assembly includes a first dual-output shaft motor, a worm gear, and a worm wheel; the first dual-output shaft motor is mounted on the fixed rod, and both ends of the output shaft are coaxially connected to the worm gear, the two sets of worm gears have opposite helical directions, and the worm wheel is coaxially mounted on the hinge shaft of both sets of rotating rods, and the two sets of worm wheels mesh with the two sets of worm gears respectively.

[0009] In one embodiment, the clamping assembly includes a clamping plate and a knob; the fixed rod and the two sets of rotating rods are each provided with a clamping groove facing the side of the hospital bed; the clamping plate is slidably disposed in the clamping groove in the vertical direction; the knob is vertically threadedly connected to the fixed rod or the rotating rod, and its bottom end is rotatably connected to the clamping plate.

[0010] In one embodiment, the bottom surface of the clamping groove is provided with multiple sets of slots at intervals along the length of the hospital bed, and the bottom end of the clamping plate is provided with multiple sets of teeth corresponding to the multiple sets of slots, and the multiple sets of teeth can pass through the multiple sets of slots.

[0011] In one embodiment, both ends of the bottom of the two sets of bases are provided with casters with self-locking function, both ends of the two sets of bases are provided with guide posts, both ends of the crossbeam are provided with two sets of telescopic posts, the four sets of telescopic posts are respectively slidably inserted through the four sets of guide posts in the vertical direction, both sets of bases are vertically provided with electric telescopic rods, and the telescopic ends of the two sets of electric telescopic rods are connected to the crossbeam.

[0012] In one embodiment, the mounting base has a first through groove, which is slidably fitted onto the crossbeam along the width direction of the bed. A first screw is rotatably mounted on the crossbeam, which is arranged along the width direction of the bed and threadedly connected to the mounting base. A drive motor is mounted on the crossbeam, and the output shaft of the drive motor is coaxially connected to the first screw.

[0013] In one embodiment, the mounting base further includes a movable component, through which the two sets of connecting plates are connected to the mounting base, and adjusting the movable component can drive the two sets of connecting plates to move relatively closer or further apart along the width direction of the hospital bed.

[0014] In one embodiment, the moving component includes a second dual-output shaft motor, a second screw, and an extension rod; the mounting base has a second through slot, and the extension rods that can slide along the width direction of the bed are passed through both ends of the second through slot. The two sets of extension rods are respectively connected to two sets of connecting plates. The second dual-output shaft motor is disposed in the second through slot, and the output shafts at both ends are coaxially connected to the second screw. The two sets of second screws rotate in opposite directions. The two sets of second screws are arranged along the width direction of the bed and are respectively threadedly connected to the two sets of extension rods.

[0015] In one embodiment, the adjustment mechanism further includes a protective component, which includes two sets of protective rods and a transmission component. The two sets of protective rods are slidably mounted on the two sets of connecting plates in a vertical direction. One set of protective rods is slidably inserted into the other set of protective rods in the width direction of the hospital bed. The transmission component is mounted on one set of connecting plates and connects the protective rods on the connecting plate to one set of worm gears to convert the rotation of the worm gears into the movement of the protective rods.

[0016] In one embodiment, the transmission assembly includes a third screw and a bevel gear; the third screw is arranged vertically and rotatably mounted on one of the connecting plates, the third screw is threadedly connected to the protective rod on the connecting plate, and the bevel gear is coaxially mounted on the bottom end of the third screw and on one of the worm gears on the connecting plate, and the two sets of bevel gears mesh. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a three-dimensional structural diagram of a patient transfer device provided in an embodiment of the present invention; Figure 2 for Figure 1 A three-dimensional structural schematic diagram of another state of a patient transfer device is shown; Figure 3 for Figure 1 An exploded view of an adjustment mechanism in a patient transfer device is shown. Figure 4 for Figure 1 An exploded view of a clamping component in a patient transfer device is shown. Figure 5 for Figure 1 An exploded view of a moving component in a patient transfer device is shown. Figure 6 for Figure 1 An exploded view of the protective components in a patient transfer device is shown.

[0019] Figure label: 10. Base; 101. Casters; 102. Guide column; 103. Electric telescopic rod; 20. Crossbeam; 201. Telescopic column; 202. First screw; 203. Drive motor; 30. Mounting base; 301. Connecting plate; 3011. T-shaped slide groove; 302. First through groove; 303. Second double-output shaft motor; 304. Second screw; 305. Extension rod; 306. Second through groove; 40. Fixed rod; 401. Rotating rod; 402. First double-output shaft motor; 403. Worm gear; 404. Worm wheel; 405. Clamping plate; 4051. Groove tooth; 4052. Guide shaft; 406. Knob; 407. Clamping groove; 4071. Groove opening; 50. Protective rod; 501. Third screw; 502. Bevel gear; 503. T-shaped slider. Detailed Implementation

[0020] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0021] Please see Figures 1 to 3 One embodiment of a patient transfer device includes a base 10, a crossbeam 20, a mounting base 30, and an adjustment mechanism.

[0022] The system includes two sets of bases 10 spaced apart; crossbeams 20 are vertically adjustable and mounted on the two sets of bases 10; mounting seats 30 are slidably mounted on the crossbeams 20 along the width of the bed, and connecting plates 301 are vertically mounted at both ends of the mounting seats 30; each of the two sets of connecting plates 301 has an adjustment mechanism at its bottom, which includes a fixed rod 40, a rotating rod 401, an adjustment component, and a clamping component. The fixed rod 40 is positioned along the length of the bed and connected to the bottom of the connecting plate 301. The rotating rods 401 are hinged to both ends of the fixed rod 40. The adjustment component connects the fixed rod 40 and the two sets of rotating rods 401 and drives the two sets of rotating rods 401 to rotate in opposite directions. Clamping components are mounted on the fixed rod 40 and the two sets of rotating rods 401, and the clamping components are used to clamp the long side of the bed sheet.

[0023] In the above embodiments, during use, multiple sets of clamping components clamp the two long sides of the bed sheet (not shown). It can be understood that at this time, the fixed rod 40 corresponds to the patient's buttocks and thighs, the upward-rotating rod 401 corresponds to the patient's back and head, and the downward-rotating rod 401 corresponds to the patient's calves. After clamping the bed sheet, driving the crossbeam 20 upwards will cause the bed sheet to rise through the multiple clamping components, thereby raising the patient on the bed sheet. Then, the adjusting component drives the two sets of rotating rods 401 to rotate in opposite directions. At this time, the two... The rotating rod 401 rotates upward, causing one end of the bed sheet to rotate and support the patient's back as they sit up. The two rotating rods 401 at the other end rotate downward, causing the other end of the bed sheet to rotate and remove support for the patient's lower legs, thus changing the patient from a supine position to a sitting position. Then, the mounting base 30 is driven to move, moving the patient from above the hospital bed to above the wheelchair, and the crossbeam 20 is driven to descend, allowing the patient to land on the wheelchair. Finally, by removing the clamping components from the bed sheet, the patient can be transferred from the hospital bed to the wheelchair, facilitating the transfer and improving the practicality of the device.

[0024] Understandably, when a patient needs to be transferred back to the bed after being moved from the hospital bed to a wheelchair, the steps of clamping the bed sheet, lifting, and moving are repeated to move the patient above the bed. Then, the two sets of rotating rods 401 are driven to rotate in opposite directions to reset via the adjusting component. At this time, the two sets of rotating rods 401 at one end rotate downward, causing one end of the bed sheet to rotate and release support for the patient's back, allowing them to lie down. The two sets of rotating rods 401 at the other end rotate upward, causing the other end of the bed sheet to rotate and support the patient's lower legs, allowing them to lift their legs. This allows the patient to change from a sitting position to a supine position. Finally, the descent steps are repeated and the clamping of the bed sheet is released to transfer the patient from the wheelchair to the hospital bed, facilitating transfers between the hospital bed and the wheelchair and improving the practicality of the device.

[0025] Understandably, the lifting mechanism of the crossbeam 20 also facilitates reducing the space occupied by the device when it is not in use, and makes the device easier to store and move.

[0026] Please see Figure 1 and Figure 3 In one embodiment, the adjustment assembly includes a first dual-output shaft motor 402, a worm gear 403, and a worm wheel 404. The first dual-output shaft motor 402 is mounted on a fixed rod 40, and both ends of the output shaft are coaxially connected to the worm gear 403. The two sets of worm gears 403 have opposite helical directions. The hinge shafts of the two sets of rotating rods 401 are coaxially provided with worm wheels 404, and the two sets of worm wheels 404 mesh with the two sets of worm gears 403 respectively.

[0027] In the above embodiment, the first dual-output shaft motor 402 drives two sets of worm gears 403 to rotate. The rotation of the two sets of worm gears 403 meshes with the two sets of worm wheels 404, thereby driving the two sets of worm wheels 404 to rotate. Since the two sets of worm gears 403 have opposite helical directions, the two sets of worm wheels 404 rotate in opposite directions. The opposite rotation of the two sets of worm wheels 404 can drive the two sets of rotating rods 401 to rotate in opposite directions through the hinge shaft. Driving the two sets of rotating rods 401 to rotate in opposite directions is convenient, and the first dual-output shaft motor 402 drives the two sets of worm gears 403 to rotate. 03. Reverse rotation: The two sets of worm gears 403 rotate in opposite directions and mesh with the two sets of worm wheels 404, which drives the two sets of rotating rods 401 to rotate in opposite directions and reset. Driving the two sets of rotating rods 401 to rotate in opposite directions and reset is convenient. On the other hand, the first dual-output shaft motor 402 stops driving the two sets of worm gears 403 to rotate. At this time, the two sets of worm gears 403 mesh with the two sets of worm wheels 404 to form a self-locking mechanism, which can fix the two sets of rotating rods 401, thereby ensuring the stability of the two sets of rotating rods 401 in the patient's supine or sitting position.

[0028] Please see Figure 3 and Figure 4 In one embodiment, the clamping assembly includes a clamping plate 405 and a knob 406; the fixed rod 40 and the two sets of rotating rods 401 are each provided with a clamping groove 407 facing the side of the bed; the clamping plate 405 is slidably disposed in the clamping groove 407 in the vertical direction; the knob 406 is vertically threaded to the fixed rod 40 or the rotating rod 401, and its bottom end is rotatably connected to the clamping plate 405.

[0029] In the above embodiment, the bed sheet is clamped by placing the long side of the bed sheet in the clamping groove 407 and between the bottom surface of the clamping groove 407 and the bottom end of the clamping plate 405, and then driving the clamping plate 405 downward by rotating the knob 406. Conversely, the clamping of the bed sheet is canceled by driving the clamping plate 405 upward by rotating the knob 406 in the opposite direction. Clamping or canceling the bed sheet is convenient.

[0030] Specifically, in the above embodiments, guide shafts 4052 are provided at both ends of the clamping plate 405, and the two sets of guide shafts 4052 are slidably mounted on the fixed rod 40 or the rotating rod 401 in the vertical direction. By providing two sets of guide shafts 4052, the stability of the clamping plate 405 sliding in the vertical direction can be improved, thereby improving the stability of clamping the bed sheet.

[0031] Based on the above embodiments, further, the bottom surface of the clamping groove 407 is provided with multiple sets of slots 4071 arranged along the length of the hospital bed, and the bottom end of the clamping plate 405 is provided with multiple sets of teeth 4051 corresponding to the multiple sets of slots 4071, and the multiple sets of teeth 4051 can pass through the multiple sets of slots 4071.

[0032] By setting multiple sets of slots 4071 and multiple sets of teeth 4051 to cooperate, when the teeth 4051 are inserted into the slots 4071, the teeth 4051 will drive the bed sheet into the slots 4071. At this time, the bottom and sides of the slots 4071 and the teeth 4051 cooperate to clamp the bed sheet, thereby increasing the clamping area of ​​the bed sheet and improving the firmness of clamping the bed sheet.

[0033] Please see Figure 1 and Figure 2 In one embodiment, both ends of the bottom of the two sets of bases 10 are provided with casters 101 with self-locking function, both ends of the two sets of bases 10 are provided with guide posts 102, both ends of the crossbeam 20 are provided with two sets of telescopic posts 201, the four sets of telescopic posts 201 are respectively slidably inserted through the four sets of guide posts 102 in the vertical direction, and both sets of bases 10 are vertically provided with electric telescopic rods 103, the telescopic ends of the two sets of electric telescopic rods 103 are connected to the crossbeam 20.

[0034] In the above embodiments, the universal wheels 101 with self-locking function are provided to facilitate the movement and fixation of the device, making it convenient to use the device in different positions. The crossbeam 20 can be raised and lowered by driving the extension and retraction of the two sets of electric telescopic rods 103. The raising and lowering of the crossbeam 20 is convenient, and the stability of the raising and lowering of the crossbeam 20 can be improved by the cooperation of the guide column 102 and the telescopic column 201.

[0035] Please see Figure 1 and Figure 5 In one embodiment, the mounting base 30 is provided with a first through groove 302, which is slidably sleeved on the crossbeam 20 along the width direction of the bed. A first screw 202 is rotatably provided on the crossbeam 20, which is arranged along the width direction of the bed and threadedly connected to the mounting base 30. A drive motor 203 is provided on the crossbeam 20, and the output shaft of the drive motor 203 is coaxially connected to the first screw 202.

[0036] In the above embodiment, the first screw 202 is driven to rotate by the drive motor 203. The rotation of the first screw 202 engages with the threaded engagement of the mounting base 30, thereby driving the mounting base 30 to move. The first screw 202 is driven to rotate in the opposite direction by the drive motor 203. The reverse rotation of the first screw 202 engages with the threaded engagement of the mounting base 30, thereby driving the mounting base 30 to move in the opposite direction. The movement of the mounting base 30 is convenient.

[0037] Please see Figure 1 and Figure 5 In one embodiment, the mounting base 30 further includes a moving component. Two sets of connecting plates 301 are connected to the mounting base 30 via the moving component. Adjusting the moving component can drive the two sets of connecting plates 301 to move relatively closer or further away along the width direction of the hospital bed.

[0038] In the above embodiments, the distance between the two sets of adjustment mechanisms can be adjusted by moving the two sets of connecting plates 301 relatively closer or further away along the width of the bed through the moving component. This facilitates adjustment according to the width of the bed or bed sheet, making it easy for the device to adapt to different beds or bed sheets. On the other hand, when multiple clamping components in the two sets of adjustment mechanisms clamp the bed sheet, the two sets of connecting plates 301 can be moved relatively further away along the width of the bed through the moving component, causing the two sets of adjustment mechanisms to move relatively further away. The relatively distant movement of the two sets of adjustment mechanisms can tighten the bed sheet. Tightening the bed sheet can effectively reduce the shaking caused by the subsequent movement or posture change of the patient through the bed sheet, thereby improving the comfort of the patient during transfer.

[0039] Based on the above embodiments, the moving component further includes a second dual-output shaft motor 303, a second screw 304, and an extension rod 305; a second through groove 306 is provided on the mounting base 30, and extension rods 305 that can slide along the width direction of the bed are provided at both ends of the second through groove 306. The two sets of extension rods 305 are respectively connected to two sets of connecting plates 301. The second dual-output shaft motor 303 is disposed in the second through groove 306, and the output shafts at both ends are coaxially connected to the second screw 304. The two sets of second screws 304 rotate in opposite directions. The two sets of second screws 304 are arranged along the width direction of the bed and are respectively threadedly connected to the two sets of extension rods 305.

[0040] In the above embodiment, the rotation of the second dual-output shaft motor 303 drives the rotation of the two sets of second screws 304, which engage with the threaded engagement of the two sets of extension rods 305, thereby driving the two sets of extension rods 305 to move closer to each other. Conversely, the rotation of the second dual-output shaft motor 303 drives the rotation of the two sets of second screws 304 in the opposite direction, which engages with the threaded engagement of the two sets of extension rods 305, thereby driving the two sets of extension rods 305 to move further away from each other. This makes it convenient to drive the two sets of connecting plates 301 to move closer or further away from each other.

[0041] Please see Figure 1 , Figure 2 and Figure 6In one embodiment, the adjustment mechanism further includes a protective component, which includes two sets of protective rods 50 and a transmission component. The two sets of protective rods 50 are respectively slidably mounted on two sets of connecting plates 301 in the vertical direction. One set of protective rods 50 can slide through the other set of protective rods 50 in the width direction of the hospital bed. The transmission component is mounted on one set of connecting plates 301 and connects the protective rods 50 on the connecting plate 301 to one set of worm gears 403, so as to convert the rotation of the worm gears 403 into the movement of the protective rods 50.

[0042] In the above embodiment, when the first dual-axis motor 402 drives the two sets of worm gears 403 to rotate, changing the patient from a supine position to a sitting position, the rotation of one set of worm gears 403 can drive the protective rod 50 to move downward through the transmission assembly. The downward movement of the protective rod 50 can limit and intercept the patient's movement in front when the patient is in a sitting position, thereby preventing the patient from leaning forward and falling off the bed sheet, improving the safety of the device. When the first dual-axis motor 402 drives the two sets of worm gears 403 to rotate in opposite directions, changing the patient from a sitting position to a supine position, the rotation of one set of worm gears 403 can drive the protective rod 50 to move upward through the transmission assembly. The upward movement of the protective rod 50 can reset the patient's position when the patient is in a supine position. Resetting and storing the protective rod 50 is convenient and avoids interference with subsequent operations.

[0043] Specifically, in the above embodiment, both sets of connecting plates 301 are provided with T-shaped grooves 3011, and both sets of protective rods 50 are provided with T-shaped sliders 503 at their opposite ends. The two sets of T-shaped sliders 503 are slidably disposed within the two sets of T-shaped grooves 3011 in the vertical direction. The cooperation between the T-shaped grooves 3011 and the T-shaped sliders 503 improves the stability of the sliding of the protective rods 50.

[0044] Based on the above embodiments, the transmission assembly further includes a third screw 501 and a bevel gear 502; the third screw 501 is arranged vertically and rotatably mounted on one of the connecting plates 301, the third screw 501 is threadedly connected to the protective rod 50 on the connecting plate 301, and bevel gears 502 are coaxially mounted on the bottom end of the third screw 501 and on one of the worm gears 403 on the connecting plate 301, and the two sets of bevel gears 502 mesh.

[0045] In the above embodiment, as the worm gear 403 rotates to change the patient from a supine to a sitting position, the rotation of the worm gear 403 drives the third screw 501 to rotate through the meshing of two sets of bevel gears 502. The rotation of the third screw 501, in thread engagement with the protective rod 50, drives the protective rod 50 to move downwards, thereby limiting and intercepting the patient's front when the patient is in a sitting position. Conversely, as the worm gear 403 rotates in the opposite direction to change the patient from a sitting to a supine position, the reverse rotation of the worm gear 403 drives the third screw 501 to rotate in the opposite direction through the meshing of two sets of bevel gears 502. The reverse rotation of the third screw 501, in thread engagement with the protective rod 50, drives the protective rod 50 to move upwards, thereby resetting the two sets of protective rods to their upward position. Driving the two sets of protective rods 50 to move downwards to limit and intercept the patient's front or to move upwards to reset is convenient and requires no additional operation or driving equipment, making it easy to use and reducing the cost of the device.

[0046] The specific implementation method of the above-mentioned patient transfer device is as follows: First, by placing the two long sides of the bed sheet in the clamping groove 407, and positioning it between the bottom surface of the clamping groove 407 and the bottom end of the clamping plate 405, the bed sheet can be clamped by rotating the knob 406 to drive the clamping plate 405 to move downward. Then, the rotation of the second dual-shaft motor 303 drives the two sets of second screws 304 to rotate, which engage with the two sets of extension rods 305 to drive the two sets of extension rods 305 to move away from each other. The relative movement of the extension rods 305 can tighten the bed sheet. Tightening the bed sheet can effectively reduce the shaking caused by the subsequent movement or posture change of the patient through the bed sheet, thereby improving the comfort of the patient during transfer.

[0047] Then, extending the two sets of electric telescopic rods 103 causes the crossbeam 20 to rise, which in turn lifts the patient through the bed sheet. The first dual-shaft motor 402 then drives the two sets of worm gears 403 to rotate. The rotation of the worm gears 403 meshes with the two sets of worm wheels 404, causing them to rotate in opposite directions. This opposite rotation of the worm wheels 404, via the hinge shaft, drives the two sets of rotating rods 401 to rotate in opposite directions. At this point, the two sets of rotating rods 401 at one end rotate upwards, causing the bed sheet to rotate at one end to support the patient's back as they sit up. The two sets of rotating rods 401 at the other end... The downward rotation of the rotating rod 401 causes the other end of the bed sheet to rotate, thus removing the support for the patient's lower legs and allowing the patient to change from a supine to a sitting position. At the same time, the rotation of the worm gear 403 drives the third screw 501 to rotate through the meshing of two sets of bevel gears 502. The rotation of the third screw 501, in thread engagement with the protective rod 50, drives the protective rod 50 to move downward. This allows the two sets of protective rods 50 to limit and intercept the patient's movement in front when the patient is in a sitting position, thereby preventing the patient from leaning forward and falling off the bed sheet and improving the safety of the device.

[0048] Then, the first screw 202 is rotated by the drive motor 203. The rotation of the first screw 202 and the thread engagement with the mounting base 30 can drive the mounting base 30 to move, thereby transferring the patient from above the hospital bed to above the wheelchair. Then, the two sets of electric telescopic rods 103 are driven to retract, which can lower the crossbeam 20 and place the patient in a sitting position on the wheelchair.

[0049] Finally, by rotating the knob 406 in the opposite direction to drive the clamping plate 405 upward, the clamping of the bed sheet can be released, allowing the patient to be transferred from the bed to the wheelchair, which facilitates the transfer of the patient from the bed to the wheelchair and improves the practicality of the device.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A patient transfer device, characterized in that, include: The base (10) has two sets of spaced-out arrangements; A crossbeam (20) is mounted on two sets of bases (10) that can be raised and lowered in the vertical direction; The mounting base (30) is slidably mounted on the crossbeam (20) along the width of the hospital bed, and both ends of the mounting base (30) are vertically provided with connecting plates (301); and The adjustment mechanism is provided at the bottom of both sets of connecting plates (301). The adjustment mechanism includes a fixed rod (40), a rotating rod (401), an adjustment component, and a clamping component. The fixed rod (40) is arranged along the length of the bed and is connected to the bottom of the connecting plate (301). The rotating rod (401) is hinged to both ends of the fixed rod (40). The adjustment component connects the fixed rod (40) and the two sets of rotating rods (401) and is used to drive the two sets of rotating rods (401) to rotate in opposite directions. The clamping component is provided on the fixed rod (40) and the two sets of rotating rods (401) and is used to clamp the long side of the bed sheet.

2. The patient transfer device according to claim 1, characterized in that, The adjustment assembly includes a first dual-output shaft motor (402), a worm (403), and a worm wheel (404). The first dual-output shaft motor (402) is mounted on the fixed rod (40), and both ends of the output shaft are coaxially connected to the worm (403). The two sets of worms (403) have opposite helical directions. The worm wheel (404) is coaxially mounted on the hinge shaft of both sets of rotating rods (401), and the two sets of worm wheels (404) mesh with the two sets of worms (403) respectively.

3. The patient transfer device according to claim 1, characterized in that, The clamping assembly includes a clamping plate (405) and a knob (406); the fixed rod (40) and the two sets of rotating rods (401) are all provided with clamping grooves (407) facing the side of the hospital bed. The clamping plate (405) is slidably disposed in the clamping groove (407) in the vertical direction. The knob (406) is vertically threaded to the fixed rod (40) or the rotating rod (401), and its bottom end is rotatably connected to the clamping plate (405).

4. A patient transfer device according to claim 3, characterized in that, The bottom surface of the clamping groove (407) is provided with multiple sets of slots (4071) arranged along the length of the bed. The bottom end of the clamping plate (405) is provided with multiple sets of teeth (4051) corresponding to the multiple sets of slots (4071). The multiple sets of teeth (4051) can pass through the multiple sets of slots (4071).

5. A patient transfer device according to claim 1, characterized in that, Both ends of the two sets of bases (10) are provided with casters (101) with self-locking function. Both ends of the two sets of bases (10) are provided with guide columns (102). Both ends of the crossbeam (20) are provided with two sets of telescopic columns (201). The four sets of telescopic columns (201) slide vertically through the four sets of guide columns (102). Both sets of bases (10) are provided with electric telescopic rods (103) vertically. The telescopic ends of the two sets of electric telescopic rods (103) are connected to the crossbeam (20).

6. A patient transfer device according to claim 1, characterized in that, The mounting base (30) is provided with a first through groove (302), the first through groove (302) is slidably sleeved on the crossbeam (20) along the width direction of the bed, the crossbeam (20) is rotatably provided with a first screw (202), the first screw (202) is arranged along the width direction of the bed and is threadedly connected to the mounting base (30), the crossbeam (20) is provided with a drive motor (203), and the output shaft of the drive motor (203) is coaxially connected to the first screw (202).

7. A patient transfer device according to claim 2, characterized in that, The mounting base (30) also includes a moving component. The two sets of connecting plates (301) are connected to the mounting base (30) through the moving component. Adjusting the moving component can drive the two sets of connecting plates (301) to move relatively closer or further away along the width direction of the bed.

8. A patient transfer device according to claim 7, characterized in that, The moving component includes a second dual-output shaft motor (303), a second screw (304), and an extension rod (305); a second through slot (306) is provided on the mounting base (30), and the extension rod (305) that can slide along the width direction of the bed is provided at both ends of the second through slot (306). The two sets of extension rods (305) are respectively connected to the two sets of connecting plates (301). The second dual-output shaft motor (303) is set in the second through slot (306), and the output shafts at both ends are coaxially connected to the second screw (304). The two sets of second screws (304) rotate in opposite directions. The two sets of second screws (304) are set along the width direction of the bed and are respectively threaded to the two sets of extension rods (305).

9. A patient transfer device according to claim 7, characterized in that, The adjustment mechanism also includes a protective component, which includes two sets of protective rods (50) and a transmission component. The two sets of protective rods (50) are respectively slidably mounted on two sets of connecting plates (301) in the vertical direction. One set of protective rods (50) can slide through the other set of protective rods (50) in the width direction of the hospital bed. The transmission component is mounted on one set of connecting plates (301) and connects the protective rods (50) on the connecting plate (301) and one set of worm gears (403) to convert the rotation of the worm gears (403) into the movement of the protective rods (50).

10. A patient transfer device according to claim 9, characterized in that, The transmission assembly includes a third screw (501) and a bevel gear (502); the third screw (501) is arranged vertically and rotatably on one of the connecting plates (301); the third screw (501) is threadedly connected to the protective rod (50) on the connecting plate (301); the bevel gear (502) is coaxially arranged on the bottom end of the third screw (501) and on one of the worm gears (403) on the connecting plate (301); the two sets of bevel gears (502) mesh.

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