Critical patient safe transport cart

Abstract

The present application relates to the field of medical devices, and discloses a safe transfer trolley for critical patients, which comprises a base, a top seat arranged on the base, a sliding groove arranged in the top seat, an extension plate arranged in the sliding groove, a lifting mechanism arranged on the base, a driving mechanism arranged on the base, a linear driving assembly arranged in the top seat, and a transmission assembly arranged in the top seat and connected with the driving mechanism at one end. The safe transfer trolley for critical patients is provided by cooperation of the base, the top seat, the sliding groove, the extension plate, the lifting mechanism, the driving mechanism, the linear driving assembly and the one-way transmission assembly. The driving mechanism is started to drive the lifting mechanism to move, and the top seat is driven to move up and down, so that the actual height of the bed can be adjusted, and the patient's use is facilitated. In addition, the use area of the top seat can be expanded and adjusted, and medical staff can perform rescue pressing on the critical patient on the expanded top seat in an emergency.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a safe transport vehicle for critically ill patients. Background Technology

[0002] When medical staff transfer critically ill patients, they need to use a transport vehicle to move the critically ill patients to the intensive care unit. With the continuous development of the medical industry, the transport vehicles are also being upgraded.

[0003] Traditional transport vehicles require manual lifting of patients when transferring them to the intensive care unit. This not only increases the workload of medical staff but also requires multiple people to complete the transfer. For critically ill patients, the large range of motion involved in lifting them by touching their bodies can easily cause wound rupture and organ concussion, potentially causing secondary injury.

[0004] Patent application (CN202122085140.1) discloses a critical care patient transfer device, including a movable base plate. Wheels are installed at the four corners of the bottom of the movable base plate, and support rods are installed at the four corners of the top of the movable base plate. A support bed board is installed at the top of the support rods, and a transfer bed frame is installed at the top of the support bed board. This critical care patient transfer device replaces the traditional method of manually lifting patients onto dedicated hospital beds, eliminating the need for multiple people to assist in the transfer. This not only reduces the workload of medical staff but also improves the efficiency of transport and avoids secondary harm to patients.

[0005] Although the device replaces the traditional method of manually lifting patients onto specialized beds by incorporating a transfer mechanism, its fixed height and inability to adjust the height of the transport cart according to the actual height of the bed cause significant inconvenience for patients. Furthermore, during patient transport, medical staff often need to perform CPR on critically ill patients, requiring them to sit on the patient and manually perform the compressions. The device also cannot be adjusted to expand its usable area, making it difficult for medical staff to operate and thus reducing its practicality. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention proposes a safe transport vehicle for critically ill patients, which solves the problems that existing devices cannot adjust the height of the transport vehicle according to the actual height of the hospital bed, and cannot expand or adjust the usable area of ​​the transport vehicle.

[0007] A safe transport vehicle for critically ill patients includes a base, a top seat above the base, and a groove within the top seat; an extension plate slidably mounted within the groove; multiple lifting mechanisms mounted on the base, which drive the top seat to move vertically along the base; a drive mechanism mounted on the base, which drives the lifting mechanisms to raise and lower the top seat relative to the base; a linear drive assembly within the top seat, which drives the extension plate to slide along the groove; and a transmission assembly within the top seat, one end of which extends through the top seat and connects to the drive mechanism, transmitting power from the drive mechanism to the linear drive assembly.

[0008] Furthermore, the drive mechanism includes a support block and a threaded rod. The support block is disposed on the base, and the threaded rod is rotatably mounted to the support block. A slide is threadedly connected to the outer side of the threaded rod, and a first bevel gear is disposed at the end of the threaded rod away from the support block. A second bevel gear is disposed on the base, and the second bevel gear meshes with the first bevel gear.

[0009] Furthermore, the driving mechanism also includes a first driving motor, which is disposed in the middle of the base, and the output shaft of the first driving motor is fixedly connected to the second bevel gear.

[0010] Furthermore, the lifting assembly includes two sliders and two support rods. One of the sliders is fixedly connected to the slide block, and the other slider is disposed on the base. One end of the support rod is rotatably mounted to the slider via a pin, and the end of the support rod away from the slider is also rotatably mounted to the top seat via a pin.

[0011] Furthermore, the transmission assembly includes an electric telescopic rod and a transmission rod. The output shaft of the first drive motor is fixedly connected to the transmission rod. The end of the transmission rod away from the first drive motor is connected to the electric telescopic rod through a one-way rotation assembly. The end of the electric telescopic rod away from the one-way rotation assembly is installed in the top seat, and the electric telescopic rod is configured to cooperate with the linear drive assembly.

[0012] Furthermore, the unidirectional rotation assembly includes a connecting sleeve, one end of which is fixedly connected to the outer side of the electric telescopic rod, and the other end of which is rotatably connected to the outer side of the transmission rod.

[0013] Furthermore, the unidirectional rotation assembly also includes a ratchet disposed on the inner side wall of the connecting sleeve, and a mounting rod is fixedly connected to one end of the transmission rod located inside the connecting sleeve. A pawl is rotatably mounted on the mounting rod, and a torsion spring is disposed between the pawl and the mounting rod, and the pawl is configured to cooperate with the ratchet.

[0014] Furthermore, the linear drive assembly includes a drive shaft and a second drive gear. A receiving groove is provided in the top seat. The drive shaft is rotatably installed in the receiving groove, and the second drive gear is sleeved on the outside of the drive shaft. One end of the electric telescopic rod located in the receiving groove is sleeved with a first drive gear. The first drive gear meshes with the second drive gear. A drive component is also provided in the receiving groove.

[0015] Furthermore, the driving component includes a transmission belt and a plurality of driving rods. The driving rods are installed in the receiving groove, and the plurality of driving rods are all connected to the transmission shaft via the transmission belt. One end of the driving rod passes through the receiving groove and extends into the slide groove. The end of the driving rod located in the slide groove is connected to the extension plate by a thread.

[0016] Furthermore, a second drive motor is also installed in the receiving groove. The output shaft of the second drive motor is fixedly connected to a worm gear, and a turbine gear is sleeved on the outside of the transmission shaft. The turbine gear meshes with the worm gear.

[0017] The invention employing the above technical solution has the following advantages:

[0018] 1. This invention, through the coordinated arrangement of a base, top seat, slide groove, extension plate, lifting mechanism, drive mechanism, linear drive assembly, and one-way transmission assembly, enables the drive mechanism to drive the lifting mechanism to move, thereby moving the top seat up and down. This allows the top seat to be adjusted according to the actual height of the hospital bed, thus providing convenience for the patient. Furthermore, the drive mechanism can also drive the one-way transmission assembly, allowing the linear drive assembly to drive the extension plate to slide within the slide groove. This expands and adjusts the usable area of ​​the top seat, facilitating emergency treatment of critically ill patients by medical personnel on the expanded top seat in case of emergencies, thereby improving the practicality of the device.

[0019] 2. This invention comprises a support block, a threaded rod, a first bevel gear, a second bevel gear, and a slide block. The rotation of the first bevel gear drives the rotation of the second bevel gear, causing the threaded rod to rotate relative to the support block, which in turn drives the slide block to slide. This allows the lifting component to slide along with the slide block, thereby adjusting the height of the top seat. The height adjustment is achieved through a threaded mechanism, which improves the accuracy of the adjustment and minimizes the need for multiple adjustments by the user, thus increasing the adjustment efficiency of the device.

[0020] 3. This invention, by setting up an electric telescopic rod, a transmission rod, and a one-way rotation component, allows the output shaft of the drive motor to rotate, which in turn drives the transmission rod to rotate. This, in turn, drives the electric telescopic rod to rotate, which in turn drives the linear drive component to rotate, thereby realizing subsequent transmission work.

[0021] 4. This invention, by setting up a connecting sleeve, ratchet, support rod, and pawl, allows the top seat to move upward relative to the base when the first drive motor rotates clockwise. Simultaneously, this causes the transmission rod to rotate clockwise, which in turn rotates the mounting rod. The pawl, under the rotation of the mounting rod, does not drive the ratchet to rotate, and the connecting sleeve does not rotate with the transmission rod. Conversely, when the first drive motor rotates counterclockwise, the top seat moves downward relative to the base. This also causes the transmission rod to rotate counterclockwise, rotating the mounting rod and pawl, thus driving the ratchet to rotate. This, in turn, causes the connecting sleeve and the electric telescopic rod to rotate with the transmission rod. Consequently, the first drive motor synchronously drives the extension plate to move outward from the slide groove, thereby expanding the usable area of ​​the top seat. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the structure of the critical care patient safe transport vehicle of the present invention;

[0024] Figure 2 This is a cross-sectional structural diagram of the top seat in the critical care patient safety transport vehicle of the present invention;

[0025] Figure 3 for Figure 2 Enlarged structural diagram of section A in the middle;

[0026] Figure 4 This is a schematic diagram of the structure of the extension plate in the critical care patient safety transport vehicle of the present invention when it is deployed;

[0027] Figure 5This is a schematic diagram of the transmission rod and connecting sleeve in the critical care patient safety transport vehicle of the present invention;

[0028] Figure 6 This is a schematic diagram of the ratchet and pawl structure in the critical care patient safety transport vehicle of the present invention;

[0029] Figure label:

[0030] Base 1

[0031] Top seat 2, slide groove 21, extension plate 22

[0032] First drive motor 3

[0033] Support block 41, threaded rod 42, slide block 43, first bevel gear 44, second bevel gear 45

[0034] Slider 51, Support rod 52

[0035] Electric telescopic pole 61, first transmission gear 62, transmission rod 63

[0036] Connecting sleeve 71, ratchet 72, mounting rod 73, pawl 74

[0037] Drive shaft 81, second drive gear 82, receiving groove 83

[0038] 91. Drive belt, 92.

[0039] Second drive motor 10, worm gear 11, turbine 12. Detailed Implementation

[0040] 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.

[0041] like Figures 1-6As shown, the critical care patient transport vehicle of the present invention includes a base 1, with casters installed at the four corners of the bottom of the base 1 for easy movement of the device. A top seat 2 is provided on the top of the base 1, and sliding grooves 21 are provided on both the left and right sides inside the top seat 2. An extension plate 22 is slidably installed in the sliding grooves 21. Two lifting mechanisms are provided on the base 1, which drive the top seat 2 to move vertically along the base 1. A drive mechanism is provided on the base 1, and the drive mechanism drives the lifting mechanism to raise and lower the top seat 2 relative to the base 1. A linear drive assembly is provided in the top seat 2, which drives the extension plate 22 to slide along the sliding grooves 21. A transmission assembly is provided in the top seat 2, and the bottom end of the transmission assembly extends out of the top seat 2 and is connected to the drive mechanism. The transmission assembly transmits the power of the drive mechanism to the linear drive assembly. Through the coordinated arrangement of the base 1, top seat 2, slide groove 21, extension plate 22, lifting mechanism, drive mechanism, linear drive component, and one-way transmission component, activating the drive mechanism enables the lifting mechanism to slide, thereby moving the top seat 2 up and down. This allows the top seat 2 to be adjusted according to the actual height of the hospital bed, thus providing convenience for the patient. Furthermore, the drive mechanism can also drive the one-way transmission component, causing the linear drive component to drive the extension plate 22 to slide within the slide groove 21. This expands and adjusts the usable area of ​​the top seat 2, making it easier for medical staff to perform emergency CPR on critically ill patients on the expanded top seat 2 in emergencies, thereby improving the practicality of the device.

[0042] The drive mechanism includes a support block 41 and a threaded rod 42. The support block 41 is fixedly installed on the upper surface of the base 1. A fixing block installed on the base 1 is provided on the left side of the support block 41. The right end of the threaded rod 42 is rotatably installed with the support block 41. A slide block 43 is threadedly connected to the outside of the threaded rod 42. The slide block 43 is slidably installed on the upper surface of the base 1. Two sets of lifting components are provided on the outside of the slide block 43. The end of the threaded rod 42 away from the support block 41 passes through the fixing block and is fixedly sleeved with a first bevel gear 44. A second bevel gear 45 is installed on the upper surface of the base 1. The second bevel gear 45 meshes with the first bevel gear 44. By setting up a support block 41, a threaded rod 42, a first bevel gear 44, a second bevel gear 45, and a slide block 43, the first bevel gear 44 rotates, thereby driving the second bevel gear 45 to rotate, and causing the threaded rod 42 to rotate relative to the support block 41, which in turn drives the slide block 43 to slide, so that the lifting component can slide with the slide block 43, thereby adjusting the height position of the top seat 2. The height adjustment is performed by means of a thread, which helps to improve the accuracy of the adjustment, thereby avoiding multiple adjustments by the user and improving the adjustment efficiency of the device.

[0043] The drive mechanism also includes a first drive motor 3, which is fixedly mounted in the middle of the upper surface of the base 1, and the output shaft of the first drive motor 3 is fixedly connected to the second bevel gear 45. By setting the first drive motor 3 and starting it, the output shaft of the first drive motor 3 rotates, thereby driving the first bevel gear 44 to rotate, realizing transmission, and thus enabling the lifting mechanism to operate quickly, ultimately completing the height adjustment of the top seat 2.

[0044] The lifting assembly includes two sliders 51 and two support rods 52. The right slider 51 is fixedly connected to the slide block 43, and the left slider 51 is fixedly installed on the upper surface of the base 1. The bottom end of the support rod 52 is rotatably mounted to the slider 51 via a pin, and the end of the support rod 52 away from the slider 51 is also rotatably mounted to the top seat 2 via a pin. The two support rods 52 are staggered, and the middle part of the two support rods 52 is rotatably mounted via a pin. By setting the sliders 51 and support rods 52, the slide block 43 slides horizontally on the base 1, thereby driving the two right sliders 51 to slide left and right. This causes the sliders 51 to drive the two right support rods 52 to move, which in turn pushes the top seat 2 to move up and down relative to the base 1 to adjust the actual height of the top seat 2.

[0045] The transmission assembly includes an electric telescopic rod 61 and a transmission rod 63. The output shaft of the first drive motor 3 is fixedly connected to the transmission rod 63. The end of the transmission rod 63 away from the first drive motor 3 is connected to the electric telescopic rod 61 through a one-way rotation assembly. The end of the electric telescopic rod 61 away from the one-way rotation assembly is rotatably mounted in the top seat 2, and the electric telescopic rod 61 is configured to cooperate with the linear drive assembly. By setting up the electric telescopic rod 61, the transmission rod 63, and the one-way rotation assembly, the rotation of the output shaft of the drive motor will drive the transmission rod 63 to rotate, thereby driving the electric telescopic rod 61 to rotate through the one-way rotation assembly, which in turn drives the linear drive assembly to rotate, thus realizing the subsequent transmission work.

[0046] The unidirectional rotation assembly includes a connecting sleeve 71, the top end of which is fixedly connected to the outer side of the electric telescopic rod 61, and elastic locking blocks are provided on both sides of the bottom end of the connecting sleeve 71. An annular locking groove is provided on the outer side of the transmission rod 63, and the locking blocks can be slidably installed inside the locking groove, so that the bottom end of the connecting sleeve 71 and the outer side of the transmission rod 63 can be locked together, which facilitates the disassembly and installation of the connecting sleeve 71 and the transmission rod 63. The connecting sleeve 71 allows the transmission rod 63 and the electric telescopic rod 61 to be installed according to the actual situation.

[0047] The one-way rotation assembly also includes a ratchet 72 mounted on the inner wall of the connecting sleeve 71. One end of the transmission rod 63 located inside the connecting sleeve 71 is fixedly connected to an installation rod 73. A rotating shaft (not shown in the figure) is rotatably mounted on the top of the installation rod 73. A torsion spring (not shown in the figure) is sleeved on the rotating shaft, and the top of the rotating shaft is fixedly connected to a pawl 74. The pawl 74 is configured to cooperate with the ratchet 72. By configuring the connecting sleeve 71, ratchet 72, mounting rod 73, and pawl 74, when the first drive motor 3 rotates clockwise, the top seat 2 moves upward relative to the base 1. Simultaneously, it drives the transmission rod 63 to rotate clockwise, which in turn drives the mounting rod 73 to rotate. The pawl 74, under the influence of the mounting rod 73's rotation, does not drive the ratchet 72 to rotate, and the connecting sleeve 71 does not rotate with the transmission rod 63. When the first drive motor 3 rotates counterclockwise, the top seat 2 moves downward relative to the base 1. Simultaneously, it drives the transmission rod 63 to rotate counterclockwise, which in turn drives the mounting rod 73 and pawl 74 to rotate, thus pushing the ratchet 72 to rotate. This causes the connecting sleeve 71 and the electric telescopic rod 61 to rotate with the transmission rod 63. Consequently, the first drive motor 3 can synchronously drive the extension plate 22 to move outward towards the slide groove 21, thereby expanding the usable area of ​​the top seat 2.

[0048] The linear drive assembly includes a drive shaft 81 and a second drive gear 82. A receiving groove 83 is provided in the center of the top seat 2. The drive shaft 81 is rotatably mounted within the receiving groove 83, and the second drive gear 82 is sleeved on the outside of the drive shaft 81. One end of the electric telescopic rod 61, located within the receiving groove 83, is sleeved with the first drive gear 62. The first drive gear 62 meshes with the second drive gear 82. A driving component is also provided within the receiving groove 83. By configuring the drive shaft 81, the second drive gear 82, the first drive gear 62, and the driving component, the electric telescopic rod 61 rotates, thereby driving the first drive gear 62 to rotate, which in turn drives the second drive gear 82 and the drive shaft 81 to rotate. This, in turn, drives the driving component to rotate, thus achieving a better transmission effect.

[0049] The driving component includes a transmission belt 91 and two drive rods 92. The drive rods 92 are installed in the receiving groove 83, and pulleys (not shown in the figure) are provided on the outer side of both drive rods 92 and the transmission shaft 81. The three pulleys are connected by the transmission belt 91. Both ends of the drive rods 92 pass through the receiving groove 83 and extend into the slide groove 21. The outer side of the ends of the drive rods 92 located in the slide groove 21 on the left and right sides are provided with threads, which are threads with opposite directions of rotation. The extension plate 22 is connected to the drive rods 92 by threads. By setting up the transmission belt 91 and drive rods 92, the transmission rod 63 rotates, thereby driving the two drive rods 92 to rotate synchronously through the transmission belt 91, which in turn drives the extension plate 22 to move smoothly to the outside of the slide groove 21, thus achieving a better sliding effect.

[0050] A protective railing is rotatably installed on the outer side of the extension plate 22, which can provide some protection for the patient's sideways position.

[0051] A second drive motor 10 is also fixedly installed inside the receiving groove 83. The output shaft of the second drive motor 10 is fixedly connected to a worm gear 11, and a turbine 12 is sleeved on the outside of the transmission shaft 81, meshing with the worm gear 11. By setting up the second drive motor 10, the turbine 12, and the worm gear 11, when it is necessary to store the extension plate 22, the electric telescopic rod 61 is activated, and the electric telescopic rod 61 moves towards the top seat 2, thereby causing the elastic locking block of the connecting sleeve 71 to disengage from the locking groove of the transmission rod 63. Then, the second drive motor 10 is activated, and the output shaft of the second drive motor 10 rotates, thereby driving the worm gear 11 and the turbine 12 to rotate, which in turn drives the transmission shaft 81 to rotate counterclockwise, thereby driving the drive rod 92 to rotate through transmission, and causing the extension plate 22 to move into the sliding groove 21, finally completing the storage of the extension plate 22.

[0052] The method of using this invention is as follows:

[0053] When medical staff need to place a patient on the transport vehicle, the first drive motor 3 is started. The output shaft of the first drive motor 3 rotates clockwise, thereby driving the first bevel gear 44 and the second bevel gear 45 to rotate, and causing the threaded rod 42 to rotate relative to the support block 41. This causes the slide block 43 to slide, and the two sliders 51 on the right side to slide to the left. In turn, the sliders 51 drive the two support rods 52 on the right side to move, and finally push the top seat 2 to move upward relative to the base 1 to adjust the actual height of the top seat 2, so as to facilitate the placement of the patient on the transport vehicle.

[0054] Then, the output shaft of the first drive motor 3 is rotated counterclockwise to achieve reverse transmission, thereby causing the top seat 2 to move downward relative to the base 1, which facilitates the transfer of the patient.

[0055] Simultaneously, when the first drive motor 3 rotates counterclockwise, it drives the transmission rod 63 to rotate counterclockwise, thereby causing the mounting rod 73 and the pawl 74 to rotate, which in turn drives the ratchet 72 to rotate, causing the connecting sleeve 71 and the electric telescopic rod 61 to rotate with the transmission rod 63. This then drives the first transmission gear 62 to rotate, which in turn drives the second transmission gear 82 and the transmission shaft 81 to rotate. Finally, through the transmission belt 91, the two drive rods 92 rotate synchronously, causing the moving extension plate 22 to move smoothly to the outside of the slide groove 21, thereby expanding the usable area of ​​the top seat 2 and making it convenient for medical staff to sit on the expanded top seat 2 to perform emergency compressions on patients.

[0056] 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 critical patient safe transport cart, characterized in that, The utility model provides a kind of lifting device, including: Base (1), the top of the base (1) is provided with top seat (2), the sliding slot (21) is opened in the top seat (2); Extension plate (22), slidingly installed in the sliding slot (21); Multiple sets of lifting mechanism, set up on the base (1), the top seat (2) is driven along the vertical direction of the base (1) by the lifting mechanism driving; Driving mechanism, set up on the base (1), and the driving mechanism drives the lifting mechanism driving the top seat (2) relative to the base (1) elevates; Linear drive assembly, set up in the top seat (2), the extension plate (22) is driven along the sliding slot (21) by the linear drive assembly sliding; And Transmission assembly, set up in the top seat (2), and one end of the transmission assembly passes out the top seat (2) and is connected with the driving mechanism, the transmission assembly is powered to the linear drive assembly by the driving mechanism transmission; The driving mechanism includes support block (41) and threaded rod (42); The driving mechanism further includes first drive motor (3); The transmission assembly includes electric telescopic rod (61) and transmission rod (63), the output shaft of the first drive motor (3) is fixedly connected with the transmission rod (63), the transmission rod (63) is connected with the electric telescopic rod (61) by one-way rotation assembly away from the first drive motor (3) one end, the electric telescopic rod (61) is installed in the top seat (2) away from the one-way rotation assembly one end, and the electric telescopic rod (61) is cooperatively arranged with the linear drive assembly; The linear drive assembly includes transmission shaft (81) and second transmission gear (82), the top seat (2) is opened in accommodating groove (83), the transmission shaft (81) is rotatably installed in the accommodating groove (83), and the second transmission gear (82) is sleeved on the outside of the transmission shaft (81), the electric telescopic rod (61) one end in the accommodating groove (83) is sleeved with first transmission gear (62), the first transmission gear (62) is engaged with the second transmission gear (82), and the accommodating groove (83) is also provided with driving piece.

2. The critical patient safe transport cart of claim 1, wherein, The support block (41) is set up on the base (1), and the threaded rod (42) is rotatably installed with the support block (41), the threaded rod (42) outside is connected with sliding seat (43) by thread, and the threaded rod (42) one end away from the support block (41) is provided with first bevel gear (44), the second bevel gear (45) is provided on the base (1), and the second bevel gear (45) is engaged with the first bevel gear (44).

3. The critical patient safe transport cart of claim 2, wherein, The first drive motor (3) is set up in the middle of the base (1), and the output shaft of the first drive motor (3) is fixedly connected with the second bevel gear (45).

4. The critical patient safe transport cart of claim 3, wherein, The lifting mechanism comprises two sliding blocks (51) and two supporting rods (52), either of the sliding blocks (51) is fixedly connected with the sliding base (43), and the other sliding block (51) is arranged on the base (1), one end of the supporting rod (52) is rotatably installed with the sliding block (51) through a pin shaft, and the other end of the supporting rod (52) away from the sliding block (51) is also rotatably installed with the top base (2) through a pin shaft.

5. The critical patient safe transport cart of claim 1, wherein, The one-way rotating assembly comprises a connecting sleeve (71), one end of the connecting sleeve (71) is fixedly connected with the outer side of the electric telescopic rod (61), and the other end of the connecting sleeve (71) is rotatably connected with the outer side of the transmission rod (63).

6. The critical patient safe transport cart of claim 5, wherein, The one-way rotating assembly further comprises a ratchet wheel (72) arranged on the inner side wall of the connecting sleeve (71), one end of the transmission rod (63) in the connecting sleeve (71) is fixedly connected with a mounting rod (73), the mounting rod (73) is rotatably installed with a pawl (74), a torsional spring is arranged between the pawl (74) and the mounting rod (73), and the pawl (74) and the ratchet wheel (72) are arranged in cooperation.

7. The critical patient safe transport cart of claim 1, wherein, The driving member comprises a transmission belt (91) and a plurality of driving rods (92), the driving rods (92) are installed in the accommodating groove (83), and the driving rods (92) and the transmission shaft (81) are all drivingly connected through the transmission belt (91), one end of the driving rod (92) penetrates through the accommodating groove (83) and extends into the sliding groove (21), and one end of the driving rod (92) in the sliding groove (21) is connected with the extension plate (22) through screw threads.

8. The critical patient safe transport cart of claim 1, wherein, A second driving motor (10) is further installed in the accommodating groove (83), a worm (11) is fixedly connected with the output shaft of the second driving motor (10), a turbine (12) is sleeved on the outer side of the transmission shaft (81), and the turbine (12) is engaged with the worm (11).

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