Non-magnetic transfer bed

Abstract

The present application relates to medical detection auxiliary equipment technical field, the present application provides a non-magnetic transfer bed, it includes mobile chassis, mobile chassis includes interval arrangement first support frame and second support frame and is used for connecting first support frame and second support frame's hoist frame, first support frame and second support frame between form the avoidance interval that goes through up and down, the two ends of stretcher are respectively set up on first support frame and second support frame, stretcher is located above avoidance interval, for supporting patient;Hoisting assembly rotation is arranged below the top of hoist frame, hoisting assembly lower part has a plurality of for hanging stretcher's hanger, hoisting assembly can drive stretcher rotation by hanger, and make stretcher with avoidance interval up and down corresponding to supply examination table to move and support stretcher.The present application makes stretcher through the rotation adjustment position by the rotation function of hoisting assembly, does not need integral movement, reduces the displacement of patient, reduces the possibility of secondary injury.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical detection auxiliary equipment, in particular to a non-magnetic transfer bed. BACKGROUND

[0002] In modern medical diagnosis, nuclear magnetic resonance (MRI) has become an important means for the diagnosis of diseases of the nervous system, cardiovascular system, etc. due to its advantages of no ionizing radiation, high soft tissue resolution, etc. However, for patients with spinal cord injury, myasthenia gravis, obesity and other difficulties in movement, the process of transferring them from the ward to the MRI examination table will be affected by various constraints:

[0003] Firstly, the strong magnetic field (usually 1.5T to 3.0T) generated by the MRI device has a strong attraction to metal foreign objects, and even trace amounts of magnetic components may cause equipment damage or patient injury. For example, the motor and wire in the power drive module may contain ferromagnetic components, which need to be manually disassembled before entering the MRI room, which is cumbersome and has the risk of omission.

[0004] In addition, for patients with spinal cord injury or fracture, traditional transfer requires multiple people to manually lift and move, which is easy to cause body position change or fracture displacement. At the same time, the MRI examination table is usually equipped with a complex base, and the design of the chassis of the traditional transfer bed (such as a rectangular structure) is easy to interfere with it, and repeated position adjustment is required to complete the docking, which is easy to cause difficulty for medical staff and cause anxiety for patients. Medical staff need to balance patient safety and equipment alignment, and in emergency situations, examination time may be delayed. SUMMARY

[0005] To overcome the above-mentioned defects, the embodiments of the present application provide a non-magnetic transfer bed, which solves the technical problem of how to safely and efficiently transfer patients with difficulty in movement and accurately dock the MRI examination table in the strong magnetic field environment of the MRI.

[0006] According to one aspect, at least one embodiment of the present application provides a non-magnetic transfer bed for transferring a patient to an examination table, comprising:

[0007] A moving chassis, the moving chassis comprising a first support frame and a second support frame arranged at intervals and a hoisting frame for connecting the first support frame and the second support frame, an avoidance interval is formed between the first support frame and the second support frame, and the hoisting frame is located above the avoidance interval;

[0008] A stretcher, the two ends of the stretcher are respectively arranged on the first support frame and the second support frame, and the stretcher is located above the avoidance interval and is used for supporting the patient;

[0009] The lifting assembly is rotatably arranged below the top of the lifting frame, and the lower part of the lifting assembly is provided with a plurality of hanging pieces for hanging the stretcher. The lifting assembly can drive the stretcher to rotate by means of the hanging pieces, and make the stretcher correspond to the avoidance interval up and down to move on the inspection table and support the stretcher.

[0010] As a further technical solution, a first sliding table is slidably arranged on the first supporting frame, and a second sliding table is slidably arranged on the second supporting frame. The first sliding table and the second sliding table can slide towards each other to block above the avoidance interval to jointly support the stretcher.

[0011] As a further technical solution, the lifting assembly comprises:

[0012] A rotating base is rotatably arranged at the top of the lifting frame.

[0013] Two pairs of clamping arms are arranged, and each pair of clamping arms comprises two clamping arms. Each clamping arm is rotatably arranged at the outer periphery of the rotating base through a vertically extending rotating shaft. The hanging pieces are connected to the lower end of the clamping arms. Two clamping arms arranged in pairs are used to hang on both sides of the stretcher.

[0014] As a further technical solution, a gear is arranged on the rotating shaft of each clamping arm. The two gears corresponding to the two clamping arms arranged in pairs are meshed with each other to drive the two clamping arms arranged in pairs to swing towards each other or away from each other.

[0015] As a further technical solution, a lifting table is arranged at the middle part of the lifting frame. An arc-shaped limiting guide groove is arranged on the lifting table. A sliding block is arranged on the rotating base. The sliding block slides in the arc-shaped limiting guide groove. The sliding block can be limited by the arc length of the arc-shaped limiting guide groove to limit the rotation angle of the rotating base.

[0016] As a further technical solution, the clamping arm comprises:

[0017] A horizontal swing arm is rotatably connected to the rotating base through the rotating shaft.

[0018] A vertical swing arm is rotatably arranged at the other end of the horizontal swing arm. The vertical swing arms of the two clamping arms arranged in pairs can swing vertically relative to the horizontal swing arm.

[0019] As a further technical solution, a plurality of circumferentially spaced rotating limiting clamping grooves are arranged on the outer periphery of the horizontal swing arm. A connecting sleeve is arranged on the upper end of the vertical swing arm. The connecting sleeve is sleeved on the outer periphery of the horizontal swing arm. The vertical swing arm can rotate circumferentially and axially slide relative to the horizontal swing arm. A clamping protrusion is arranged on the inner wall of the connecting sleeve.

[0020] The vertical swing arm is configured to be axially slidable along the horizontal swing arm to drive the clamping protrusion to be clamped with the rotation limiting clamping groove to lock the relative position of the vertical swing arm and the horizontal swing arm, so that the vertical swing arm can swing around the horizontal swing arm, and after swinging to the end, the clamping protrusion is driven to be clamped with the rotation limiting clamping groove by sliding to limit the swing of the vertical swing arm.

[0021] As a further technical solution, it further comprises:

[0022] A locking member is threadedly connected to the outer end of the horizontal swing arm, and is used to push the connecting sleeve to move axially along the horizontal swing arm to clamp the clamping protrusion with the rotation limiting clamping groove.

[0023] As a further technical solution, the clamping arm further comprises:

[0024] An extension arm is coaxially and slidably arranged in the vertical swing arm, the hanging member is arranged at the lower end of the extension arm, and the circumferential wall of the extension arm is provided with a plurality of axially spaced sliding limiting clamping grooves.

[0025] A locking clamping member is rotatably arranged on the vertical swing arm, the circumferential wall of the locking clamping member is slidably provided with a limiting clamping block capable of moving radially, and the locking clamping member is configured to clamp the limiting clamping block in one of the sliding limiting clamping grooves after being rotated to lock the axial position of the extension arm and the vertical swing arm.

[0026] As a further technical solution, the locking clamping member comprises:

[0027] A rotating core barrel is rotatably arranged on the vertical swing arm, the outer end surface of the limiting clamping block is provided with a first pushed inclined surface inclined away from the center of the rotating core barrel from top to bottom, the outer periphery of the rotating core barrel is provided with a sliding sleeve capable of axially sliding along the rotating core barrel, and the inner side of the sliding sleeve is provided with a first pushing inclined surface used for sliding abutment with the first pushed inclined surface.

[0028] An elastic member acts on the rotating core barrel at one end and acts on the sliding sleeve at the other end, and is used to elastically push the sliding sleeve downward.

[0029] Under the elastic pushing action of the elastic member, the first pushed inclined surface can move downward and abut against the first pushed inclined surface through the first pushing inclined surface, so that the limiting clamping block slides to the center of the rotating core barrel to be clamped with the sliding limiting clamping groove.

[0030] The beneficial effects of the present application are:

[0031] In the present application, the avoidance interval formed by the first supporting frame and the second supporting frame of the mobile chassis provides a channel for the upper movement of the examination table, avoids the interference between the traditional transfer bed chassis and the examination table, and reduces the number of adjustments during docking. The lifting frame connects the two supporting frames and provides a mounting position for the lifting assembly, so that the operation area of the lifting assembly corresponds to the avoidance interval, ensuring that the stretcher can be accurately positioned on the upper movement path of the examination table after rotation. The stretcher is erected on the two supporting frames, ensuring stable support for the patient during transfer. The rotation function of the lifting assembly allows the stretcher to adjust its position by rotating without moving as a whole, reducing the displacement of the patient and the possibility of secondary injury. The hanging component realizes the hanging of the stretcher, cooperates with the rotation of the lifting assembly to complete the position adjustment, and then supports the stretcher by moving the examination table upward, realizing the transfer of the patient to the examination table. The whole process is smooth and efficient, shortening the transfer time and improving the efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some example embodiments of the present application. For those skilled in the art, other drawings can also be obtained according to the contents of the example embodiments of the present application and these drawings without any creative labor.

[0033] Figure 1 Structure schematic diagram of a non-magnetic transfer bed in an embodiment of the present application;

[0034] Figure 2 Structure schematic diagram of a non-magnetic transfer bed in an embodiment of the present application; Figure 1

[0035] Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application; Figure 3 Figure 1 Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application;

[0036] Figure 4 Figure 2 Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application;

[0037] Figure 5 Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application; Figure 2

[0038] Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application; Figure 6 Figure 1 Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application;

[0039] Figure 7 Figure 6 Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application;

[0040] Figure 8 Structure schematic diagram of a non-magnetic transfer bed in another view of an embodiment of the present application; Figure 1 ​​​​The embodiment shows a partial exploded structural diagram of the hoisting frame and rotating base.

[0041] In the diagram: 100, movable base frame; 200, first support frame; 300, second support frame; 201, clearance interval; 400, stretcher; 500, hoisting assembly; 510, hoisting component; 210, first slide table; 310, second slide table; 110, hoisting frame; 520, rotating base; 530, clamping arm; 531, rotating shaft; 540, gear; 111, arc-shaped limiting guide groove; 112, hoisting platform; 521, sliding block; 550, Horizontal swing arm; 560, Vertical swing arm; 551, Rotation limit slot; 562, Connecting sleeve; 561, Locking protrusion; 600, Locking element; 570, Extension arm; 580, Locking element; 571, Sliding limit slot; 581, Limiting block; 590, Rotating core cylinder; 591, Sliding sleeve; 592, First pushing inclined surface; 582, First pushed inclined surface; 593, Elastic element; 900, Inspection table. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0043] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0044] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature is "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0046] In the description of the present embodiment, the terms "upper", "lower", "left", "right" and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0047] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0048] As Figures 1-8 shown, it shows a non-magnetic transfer bed in an embodiment of the present application for transferring a patient to an examination table 900, which structure includes a mobile chassis 100, a stretcher 400 and a lifting assembly 500. Each component is made of non-magnetic material to meet the use requirements of strong magnetic field in the nuclear magnetic resonance environment. The first support frame 200 and the second support frame 300 of the mobile chassis 100 are spaced apart in the horizontal direction, and the ends of the two are fixedly connected through a lifting frame 110, the two ends of the lifting frame 110 are connected with the first support frame 200 and the second support frame 300 respectively, so that the first support frame 200, the second support frame 300 and the lifting frame 110 form a door-shaped frame structure, the space inside the frame structure constitutes an avoidance interval 201 which is vertically through, and the main body part of the lifting frame 110 is located directly above the avoidance interval 201.

[0049] The stretcher 400 is in the shape of a long strip, the length direction of which is consistent with the spacing direction of the first support frame 200 and the second support frame 300, one end of the stretcher 400 is arranged on the upper surface of the first support frame 200, and the other end is arranged on the upper surface of the second support frame 300, and the lower surface of the stretcher 400 is kept at a predetermined distance from the top of the avoidance interval 201, so that the whole stretcher 400 is located directly above the avoidance interval 201 for carrying the patient.

[0050] The hoisting assembly 500 is rotatably arranged below the top of the hoisting frame 110, and the lower part of the hoisting assembly 500 is provided with a plurality of hanging pieces 510 for hanging the stretcher 400. The hoisting assembly 500 rotates by itself to drive the stretcher 400 to rotate through the hanging pieces 510, until the stretcher 400 corresponds to the avoidance interval 201 up and down, at which time the inspection bench 900 can be moved up from below the avoidance interval 201 and support the stretcher 400.

[0051] The hanging piece 510 can be provided as a hook corresponding to the hanging ring arranged on the stretcher 400, or the hanging piece 510 is a latch corresponding to the insertion hole arranged on the stretcher 400, and both structures can realize the hanging of the stretcher 400.

[0052] The avoidance interval 201 formed by the first support frame 200 and the second support frame 300 of the moving base 100 provides a channel for the upward movement of the inspection bench 900, avoiding the interference between the traditional transfer bed chassis and the inspection bench 900, and reducing the number of adjustments during docking. The hoisting frame 110 connects the two support frames and provides a mounting position for the hoisting assembly 500, so that the operation area of the hoisting assembly 500 corresponds to the avoidance interval 201, ensuring that the stretcher 400 can be accurately positioned in the upward movement path of the inspection bench 900 after rotation. The stretcher 400 is arranged on the two support frames, ensuring stable support of the patient during transfer. The rotation function of the hoisting assembly 500 allows the stretcher 400 to adjust its position by rotating without moving as a whole, reducing the displacement of the patient and the possibility of secondary injury. The hanging piece 510 realizes the hanging of the stretcher 400, and cooperates with the rotation of the hoisting assembly 500 to complete the position adjustment. Then, the inspection bench 900 moves up to support the stretcher 400, realizing the transfer of the patient to the inspection bench 900. The whole process is smooth and efficient.

[0053] Further, the upper surface of the first support frame 200 is provided with a first sliding rail extending in the direction towards the second support frame 300, and the first sliding table 210 is in sliding cooperation with the first sliding rail and can reciprocally slide along the first sliding rail. The upper surface of the second support frame 300 is provided with a second sliding rail extending in the direction towards the first support frame 200, and the second sliding table 310 is in sliding cooperation with the second sliding rail and can reciprocally slide along the second sliding rail. When the first sliding table 210 and the second sliding table 310 slide towards each other along the respective sliding rails to the limit position, the adjacent ends of the two are close to or in contact with each other, and together form a continuous support surface above the avoidance interval 201, and the bottom of the stretcher 400 is in contact with the support surface and is supported by the first sliding table 210 and the second sliding table 310. When it is necessary to transfer the stretcher 400 to the inspection bench 900, the first sliding table 210 and the second sliding table 310 slide away from each other along the respective sliding rails, and exit the area above the avoidance interval 201, so that the center of the stretcher 400 corresponds to the avoidance interval 201 up and down, so that the stretcher 400 can smoothly pass through the avoidance interval 201 after being driven to rotate.

[0054] The first sliding rail and the second sliding rail can be provided as a groove structure, and the bottom of the first sliding table 210 and the second sliding table 310 is provided with a protrusion matched with the groove; or the first sliding rail and the second sliding rail are provided as a protrusion structure, and the bottom of the first sliding table 210 and the second sliding table 310 is provided with a groove matched with the protrusion, both of which can realize the sliding function of the sliding table.

[0055] When the stretcher 400 is placed on the first support frame 200 and the second support frame 300 for transfer, and the stretcher 400 is rotated to correspond to the avoidance interval 201 up and down by the lifting assembly 500, the process of the first sliding table 210 and the second sliding table 310 sliding towards each other to form a support surface to jointly support the stretcher 400 is added. This newly added feature extends the stress point of the stretcher 400 from both ends to the middle by expanding the support area, reducing the risk of deformation of the stretcher 400 due to the middle being suspended, especially suitable for patients with a larger body weight, and improving the structural stability of the stretcher 400 during transfer. At the same time, when the sliding tables slide away from each other and exit above the avoidance interval 201, they will not hinder the upward movement path of the examination table 900, ensuring smooth transition from support to transfer, and further optimizing the safety and reliability of the transfer.

[0056] Further, the lifting assembly 500 includes a rotating base 520 and a clamping arm 530. The upper end of the rotating base 520 is rotatably connected to the top of the lifting frame 110 and can rotate relative to the lifting frame 110 about its own axis. The clamping arm 530 is provided with two pairs, each pair of clamping arms 530 including two clamping arms 530, and the upper end of each clamping arm 530 is rotatably connected to the outer periphery of the rotating base 520 through a vertically extending rotating shaft 531, so that the clamping arm 530 can rotate about the axis of the rotating shaft 531. The hanger 510 is connected to the lower end of each clamping arm 530, and the two clamping arms 530 in each pair are located on the two sides of the stretcher 400, and the hangers 510 at the lower ends are used to hang the corresponding sides of the stretcher 400.

[0057] When the stretcher 400 needs to be hung, the two clamping arms 530 in each pair rotate towards each other around their respective rotating shafts 531, so that the hangers 510 are connected to the two sides of the stretcher 400; when the stretcher 400 needs to be lowered, the two clamping arms 530 in each pair rotate away from each other around their respective rotating shafts 531, so that the hangers 510 are separated from the stretcher 400. When the rotating base 520 rotates, it drives all the clamping arms 530 and the hung stretcher 400 to rotate together until the stretcher 400 corresponds to the avoidance interval 201 up and down.

[0058] When the hoisting assembly 500 drives the stretcher 400 to rotate by means of the hanger 510, and the stretcher 400 is moved to be supported on the examination table 900, the process of connecting or separating the hanger 510 and the stretcher 400 is realized by rotating the clamping arms 530 through the rotating shafts 531. The rotating base 520 provides a stable rotating basis for the clamping arms 530, ensuring the consistency of the overall rotation. The two pairs of clamping arms 530 are arranged on the two sides of the stretcher 400 respectively, so that the force on the stretcher 400 is more balanced, and the inclination of the stretcher 400 caused by single-point hoisting is avoided, thereby reducing the risk of displacement of the patient during hoisting. At the same time, the clamping arms 530 can rotate around the vertical rotating shafts 531, which facilitates the adjustment of the hoisting position according to the width of the stretcher 400, improves the adaptability to different specifications of the stretcher 400, and makes the hoisting operation more flexible and convenient, thereby further improving the stability and applicability of the transfer process.

[0059] Further, the rotating shaft 531 of each clamping arm 530 is fixedly sleeved with a gear 540, and the gear teeth of the gear 540 are uniformly distributed in the circumferential direction. For the two clamping arms 530 arranged in pairs, the gear teeth of the two corresponding gears 540 are meshed with each other to form a gear transmission structure. When one of the clamping arms 530 rotates around the rotating shaft 531, the gear 540 connected thereto rotates synchronously, and the other gear 540 is driven to rotate in the opposite direction through the meshing of the gear teeth, thereby causing the other clamping arm 530 arranged in pairs to rotate in the opposite direction around the rotating shaft 531, and realizing the approaching or moving away of the two clamping arms 530.

[0060] The two clamping arms 530 arranged in pairs are located on the two sides of the preset placement position of the stretcher 400. When the hanger 510 needs to be connected with the stretcher 400, one of the paired clamping arms 530 is driven to rotate towards the stretcher 400, and the other clamping arm 530 is synchronously driven to rotate towards the stretcher 400 through the meshing transmission of the gears 540, until the hanger 510 is connected with the two sides of the stretcher 400. When separation is needed, one of the clamping arms 530 is driven to rotate away from the stretcher 400, and the other clamping arm 530 is synchronously driven to move away through the gear 540, so that the hanger 510 is separated from the stretcher 400. The gear 540 can be fixed on the rotating shaft 531 through key connection, or be integrally formed with the rotating shaft 531, and both the two ways can realize the synchronous rotation of the gear 540 and the rotating shaft 531.

[0061] In addition, in the material selection of the rotating shaft 531 and the gear 540, considering that the rotating shaft 531 needs to bear the swing torque of the clamping arm 530 and the radial load during patient transfer, the non-magnetic stainless steel can be selected for the rotating shaft 531, which does not contain ferromagnetic phases (such as martensite and ferrite), and has very low magnetic susceptibility (usually <0.005 x 10⁻ 6The emu / g) is not magnetized and does not produce magnetic field distortion in a strong magnetic field of 1.5T or 3.0T, so that the interference with MRI imaging and the risk of device adsorption can be avoided. Moreover, the tensile strength reaches 500-700MPa, the yield strength is greater than 200MPa, and the toughness and wear resistance are good, so that the structural stability requirement of long-term rotation can be met, and the corrosion resistance can adapt to the environment of frequent disinfection in a hospital. As for the gear 540, the contact stress and torque during meshing transmission need to be borne, the tensile strength of the titanium alloy reaches 895MPa, the hardness is about 30HRC, and the specific strength is excellent, so that the transmission accuracy can be ensured and the weight of the part can be reduced, thereby reducing the load of the rotating base 520. In addition, the wear resistance of the titanium alloy can be further improved through surface treatment (such as nitriding), so that the service life requirement of long-term meshing of the gear can be met.

[0062] Between the rotation of the clamping arms 530 around the vertical rotation shaft 531 to adjust the position of the hanging piece 510 and the realization of the hanging or separation of the stretcher 400 by the hanging piece 510, the process of meshing transmission of the gear 540 to drive the synchronous reverse swinging of the pair of clamping arms 530 is added. The meshing structure of the pair of gears 540 ensures the consistency of the movement of the two clamping arms 530, avoids the problem of asynchronous movement that may occur when each clamping arm 530 is operated alone, reduces the deviation of the alignment when the hanging piece 510 is connected with the stretcher 400, and improves the accuracy of the hanging operation.

[0063] Further, the middle part of the hoisting frame 110 is provided with a hoisting table 112 extending in the horizontal direction. The hoisting table 112 is provided with an arc-shaped limiting guide groove 111 penetrating upward and downward, the center of the arc-shaped track of the arc-shaped limiting guide groove 111 is located on the rotation axis of the rotating base 520, and the arc length corresponds to a central angle of 90°. The upper part of the rotating base 520 is provided with a sliding block 521 extending upward and penetrating through the arc-shaped limiting guide groove 111, and the outer periphery of the sliding block 521 is matched with the inner wall of the arc-shaped limiting guide groove 111, so that the sliding block 521 can slide along the extension direction of the arc-shaped limiting guide groove 111.

[0064] When the rotating base 520 rotates around its own axis, the sliding block 521 moves synchronously with the rotating base 520 and slides along the arc-shaped limiting guide groove 111. When the sliding block 521 is located at one end of the arc-shaped limiting guide groove 111, the rotating base 520 is in the initial position; when the sliding block 521 slides to the other end of the arc-shaped limiting guide groove 111, the rotating base 520 is just rotated by 90°, and at this time, the rotating base 520 is blocked by the groove wall and cannot continue to rotate, so that the rotation angle of the rotating base 520 is limited within the range of 0-90°.

[0065] In the process of rotating the base 520 to drive the clamping arm 530 and the stretcher 400 to rotate, the sliding block 521 slides in the arc-shaped limiting guide groove 111 to limit the rotation angle of the base 520 between the stretcher 400 rotating to correspond to the avoidance interval 201 up and down. The cooperation of the arc-shaped limiting guide groove 111 and the sliding block 521 can control the rotation range of the base 520, avoid the collision between the stretcher 400 and the surrounding structure caused by too large rotation angle, or the stretcher 400 cannot correspond to the avoidance interval 201 accurately caused by insufficient rotation angle.

[0066] Further, the clamping arm 530 is composed of a horizontal swing arm 550 and a vertical swing arm 560. One end of the horizontal swing arm 550 is rotationally connected with the base 520 through the rotating shaft 531, and can rotate around the vertical axis of the rotating shaft 531; the other end of the horizontal swing arm 550 is provided with a horizontally extended connecting shaft, and the upper end of the vertical swing arm 560 is rotationally connected with the horizontal swing arm 550 through the connecting shaft, so that the vertical swing arm 560 can vertically swing relative to the horizontal swing arm 550 around the horizontal axis of the connecting shaft. The hanging piece 510 is connected to the lower end of the vertical swing arm 560, and the vertical swing arms 560 of the two clamping arms 530 arranged in pairs are respectively located on the two sides of the stretcher 400.

[0067] When the lifting action needs to be performed, the vertical swing arm 560 swings downward around the connecting shaft to a drooping state, so that the hanging piece 510 can be connected with the stretcher 400 to realize lifting; when the lifting action does not need to be performed, and the stretcher 400, the patient or the surrounding obstacles need to be avoided, the vertical swing arm 560 swings upward around the connecting shaft to a preset height, to avoid interference with the related objects. When the horizontal swing arm 550 rotates around the rotating shaft 531, it can drive the vertical swing arm 560 and the hanging piece 510 to move in the horizontal direction, and complete position adjustment in cooperation with the swinging of the vertical swing arm 560.

[0068] In the process of the horizontal swing arm 550 rotating around the rotating shaft 531 to adjust the horizontal position and the hanging piece 510 completing the hanging of the stretcher 400, the vertical swing arm 560 is added to vertically swing relative to the horizontal swing arm 550 to adapt to the drooping lifting state or the lifting avoidance. When the vertical swing arm 560 droops, it can ensure that the hanging piece 510 is in a suitable lifting position, stably connects the stretcher 400 to realize reliable transfer; and when avoidance is needed, it is lifted upward to avoid collision with the stretcher 400, the patient or the obstacles, reduces the obstruction in the operation process, and improves the space utilization.

[0069] Further, a plurality of rotation limiting clamping grooves 551 are formed on the outer circumferential surface of the horizontal swing arm 550, each rotation limiting clamping groove 551 is distributed along the circumferential direction of the horizontal swing arm 550 and extends along the axial direction of the horizontal swing arm 550. The upper end of the vertical swing arm 560 is provided with a connecting sleeve 562, the connecting sleeve 562 is sleeved on the outer circumferential surface of the horizontal swing arm 550 and forms circumferential rotation cooperation and axial sliding cooperation with the horizontal swing arm 550, that is, the vertical swing arm 560 can swing around the axis of the horizontal swing arm 550 and slide along the axial direction of the horizontal swing arm 550. The inner wall of the connecting sleeve 562 is provided with a clamping protrusion 561, the shape of the clamping protrusion 561 is matched with the shape of the rotation limiting clamping groove 551.

[0070] When it is necessary to adjust the swing angle of the vertical swing arm 560, the vertical swing arm 560 is slid along the axial direction of the horizontal swing arm 550 to drive the connecting sleeve 562 to slide synchronously, so that the clamping protrusion 561 is separated from the current rotation limiting clamping groove 551; then, the vertical swing arm 560 is swung to the required angle around the circumferential direction of the horizontal swing arm 550, after swinging to the end, the vertical swing arm 560 is reversely slid to drive the clamping protrusion 561 to move into the corresponding rotation limiting clamping groove 551 and form clamping, so as to lock the relative position of the vertical swing arm 560 and the horizontal swing arm 550 and limit the further swing of the vertical swing arm 560.

[0071] The rotation limiting clamping groove 551 can be a rectangular groove, and the clamping protrusion 561 is a corresponding rectangular block; or the rotation limiting clamping groove 551 is an arc-shaped groove, and the clamping protrusion 561 is a corresponding arc-shaped block, both structures can realize the clamping and limiting of the clamping protrusion 561 and the rotation limiting clamping groove 551.

[0072] Between the vertical swing of the vertical swing arm 560 relative to the horizontal swing arm 550 to adapt to the hoisting state or to avoid and the keeping of the position after the swing is completed, the process of locking the relative position of the two by clamping the clamping protrusion 561 and the rotation limiting clamping groove 551 is added. The cooperation of the rotation limiting clamping groove 551 and the clamping protrusion 561 can realize reliable locking after the vertical swing arm 560 is swung to the preset angle, avoid accidental swing of the vertical swing arm 560 due to external force during hoisting, ensure the position stability of the hanging part 510 and reduce the shaking risk of the patient during transfer. At the same time, the vertical swing arm 560 can be unlocked by axial sliding and adjusted in angle, which takes into account the reliability of position locking and the flexibility of angle adjustment, so that the vertical swing arm 560 can not only stably keep the hanging state in a lowered state, but also be firmly fixed in a lifted position when avoiding, which further improves the safety and stability of equipment operation.

[0073] Further, a locking member 600 is further included. The outer periphery of the end of the horizontal swing arm 550 away from the rotating base 520 is provided with external threads, and the inner periphery of the locking member 600 is provided with internal threads matched with the external threads, so that the locking member 600 is connected to the outer end of the horizontal swing arm 550 through threaded cooperation. The connecting sleeve 562 is located between the locking member 600 and the side of the horizontal swing arm 550 close to the rotating base 520.

[0074] When the vertical swing arm 560 is swung to the desired angle, the locking member 600 is rotated to move along the axial direction of the horizontal swing arm 550 towards the connecting sleeve 562 until the end surface of the locking member 600 contacts with the end surface of the connecting sleeve 562 and pushes the connecting sleeve 562, so that the connecting sleeve 562 moves along the axial direction of the horizontal swing arm 550 towards the rotating base 520, the clamping protrusion 561 is completely inserted into the corresponding rotation limiting clamping groove 551 and forms a tight clamping. When it is necessary to adjust the angle of the vertical swing arm 560, the locking member 600 is reversely rotated to move along the axial direction of the horizontal swing arm 550 away from the connecting sleeve 562, so that the pushing of the connecting sleeve 562 is released, and the connecting sleeve 562 can slide along the axial direction of the horizontal swing arm 550, so that the clamping protrusion 561 is separated from the rotation limiting clamping groove 551.

[0075] In addition, the locking cooperation of the locking member 600 can also use a reset elastic member to replace the threaded cooperation.

[0076] When the vertical swing arm 560 is swung to the end point, and between the relative positions of the clamping protrusion 561 and the rotation limiting clamping groove 551 clamped and locked, the process of pushing the connecting sleeve 562 by the locking member 600 to ensure that the clamping protrusion 561 and the rotation limiting clamping groove 551 are tightly clamped is added. The threaded connection structure of the locking member 600 can provide a continuous and adjustable pushing force, avoiding the loosening problem that may occur when the clamping is simply realized by the self-gravity or friction force of the connecting sleeve 562, ensuring that the clamping protrusion 561 and the rotation limiting clamping groove 551 always maintain reliable cooperation, and further improving the stability of the position locking of the vertical swing arm 560.

[0077] Further, the clamping arm 530 further includes an extension arm 570 and a locking clamping member 580. The extension arm 570 is coaxially arranged in the vertical swing arm 560 and forms an axial sliding cooperation with the vertical swing arm 560, and can reciprocate along the axial direction of the vertical swing arm 560. The hanging member 510 is arranged at the lower end of the extension arm 570 and moves synchronously with the extension arm 570. A plurality of sliding limiting clamping grooves 571 are arranged on the peripheral wall of the extension arm 570 and are distributed at intervals along the axial direction of the extension arm 570.

[0078] The locking clamp 580 is sleeved on the outer periphery of the vertical swing arm 560 and rotationally cooperates with the vertical swing arm 560. A through hole penetrating in the radial direction is arranged on the peripheral wall of the locking clamp 580, and the limiting clamp block 581 is slidingly arranged in the through hole and can move towards or away from the extension arm 570 in the radial direction. When the extension arm 570 is slid to the required axial position, the locking clamp 580 is rotated to drive the limiting clamp block 581 to move in the radial direction, so that the inner end of the limiting clamp block 581 is clamped into the corresponding sliding limiting clamp groove 571 on the extension arm 570, thereby locking the axial relative position of the extension arm 570 and the vertical swing arm 560. When it is necessary to adjust the length of the extension arm 570, the locking clamp 580 is reversely rotated to drive the limiting clamp block 581 to move outward in the radial direction and disengage from the sliding limiting clamp groove 571, so that the extension arm 570 can be axially slid along the vertical swing arm 560 again. The axial sliding function of the extension arm 570 enables the vertical position of the hanging part 510 to be adjusted in a larger range, which can adapt to different sizes of stretchers 400 or be adjusted according to different actual subsidence conditions, thereby further improving the adaptability of the equipment to diversified use scenarios.

[0079] Further, the locking clamp 580 comprises a rotating barrel 590 and an elastic member 593. The rotating barrel 590 is rotationally sleeved on the outer periphery of the vertical swing arm 560 and rotationally cooperates with the vertical swing arm 560. A first pushed inclined surface 582 is arranged on the outer end surface of the limiting clamp block 581 and inclined to the side away from the center of the rotating barrel 590 in the upward direction. A sliding sleeve 591 is sleeved on the outer periphery of the rotating barrel 590 and axially slidingly cooperates with the rotating barrel 590, so as to be able to slide up and down along the axis of the rotating barrel 590. The inner side of the sliding sleeve 591 is provided with a first pushing inclined surface 592, and the inclination direction of the first pushing inclined surface 592 is matched with the first pushed inclined surface 582, so as to be able to slidingly abut against the first pushed inclined surface 582.

[0080] The elastic member 593 is sleeved on the outer periphery of the rotating barrel 590, one end of the elastic member 593 abuts against the upper step surface of the rotating barrel 590, and the other end abuts against the upper end surface of the sliding sleeve 591, so as to always exert a downward elastic pushing force on the sliding sleeve 591. When the extension arm 570 is slid to the required position, the sliding sleeve 591 slides downward along the rotating barrel 590 under the elastic pushing action of the elastic member 593, the first pushing inclined surface 592 contacts and continuously abuts against the first pushed inclined surface 582 of the limiting clamp block 581, so as to force the limiting clamp block 581 to slide in the radial direction to the side of the center of the rotating barrel 590, until the limiting clamp block 581 is clamped into the corresponding sliding limiting clamp groove 571 of the extension arm 570. When it is necessary to unlock, the sliding sleeve 591 is pulled upward to compress the elastic member 593, so that the first pushing inclined surface 592 disengages from the first pushed inclined surface 582, and the limiting clamp block 581 can move radially outward to disengage from the sliding limiting clamp groove 571.

[0081] The elastic member 593 continuously exerts elastic force to ensure that the first pushing inclined surface 592 stably presses against the first pushed inclined surface 582, so that the limiting block 581 is tightly clamped with the sliding limiting clamping groove 571, avoiding loosening that may occur when the locking is simply manually rotated, and further improving the reliability of the locking of the extension arm 570. Meanwhile, the structure does not need complex manual positioning, and the clamping can be automatically completed under the action of the elastic force, reducing the operation errors, making the length adjustment and locking process of the extension arm 570 more efficient, and further ensuring the position stability of the hoisting part 510 in the hoisting process.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A non-magnetic transfer bed, characterized in that, For transferring patients to the examination table (900), including: A movable base frame (100) includes a first support frame (200) and a second support frame (300) spaced apart, and a hoisting frame (110) for connecting the first support frame (200) and the second support frame (300). A vertical clearance interval (201) is formed between the first support frame (200) and the second support frame (300), and the hoisting frame (110) is located above the clearance interval (201). A stretcher (400) with its two ends resting on the first support frame (200) and the second support frame (300) respectively, the stretcher (400) being located above the clearance interval (201) and used to support the patient; The hoisting assembly (500) is rotatably disposed below the top of the hoisting frame (110). The lower part of the hoisting assembly (500) has several hanging parts (510) for suspending the stretcher (400). The hoisting assembly (500) can drive the stretcher (400) to rotate by means of the hanging parts (510) and make the stretcher (400) correspond vertically with the clearance interval (201) so that the inspection table (900) can move up and support the stretcher (400).

2. The non-magnetic transfer bed according to claim 1, characterized in that, The first support frame (200) is slidably provided with a first slide (210), and the second support frame (300) is slidably provided with a second slide (310). The first slide (210) and the second slide (310) can slide towards each other to cover the clearance interval (201) so as to jointly support the stretcher (400).

3. The non-magnetic transfer bed according to claim 1, characterized in that, The hoisting assembly (500) includes: A rotating base (520) is rotatably mounted on top of the lifting frame (110); The clamping arms (530) are provided in two pairs, with two clamping arms (530) in each pair. Each clamping arm (530) is rotatably disposed on the outer periphery of the rotating base (520) via a vertically extending pivot (531). The hanging member (510) is connected to the lower end of the clamping arm (530). The two clamping arms (530) provided in pairs are respectively used to hang on both sides of the stretcher (400).

4. The non-magnetic transfer bed according to claim 3, characterized in that, Each of the clamping arms (530) has a gear (540) on its shaft (531). The two gears (540) corresponding to the two clamping arms (530) in a pair mesh with each other to drive the two clamping arms (530) in a pair to swing towards each other or away from each other.

5. The non-magnetic transfer bed according to claim 3, characterized in that, The hoisting frame (110) is provided with a hoisting platform (112) in the middle. The hoisting platform (112) is provided with an arc-shaped limiting guide groove (111) that runs vertically through the frame. The rotating base (520) is provided with a sliding block (521). The sliding block (521) slides in the arc-shaped limiting guide groove (111). The sliding block (521) can be limited by the arc length of the arc-shaped limiting guide groove (111) to limit the rotation angle of the rotating base (520).

6. The non-magnetic transfer bed according to claim 3, characterized in that, The clamping arm (530) includes: A horizontal swing arm (550) is rotatably connected at one end to the rotating base (520) via the rotating shaft (531); A vertical swing arm (560) is provided at its upper end, which is rotatably disposed at the other end of the horizontal swing arm (550). The vertical swing arm (560) with two clamping arms arranged in pairs can swing vertically relative to the horizontal swing arm (550).

7. The non-magnetic transfer bed according to claim 6, characterized in that, The horizontal swing arm (550) has several circumferentially spaced rotation limiting slots (551) on its outer periphery. The upper end of the vertical swing arm (560) is provided with a connecting sleeve (562) sleeved on the outer periphery of the horizontal swing arm (550). The vertical swing arm (560) can rotate circumferentially relative to the horizontal swing arm (550) and slide axially. The inner wall of the connecting sleeve (562) is provided with a locking protrusion (561). The vertical swing arm (560) is configured to slide along the axial direction of the horizontal swing arm (550) to move the locking protrusion (561) to engage with the rotation limiting groove (551) to lock the relative position of the vertical swing arm (560) and the horizontal swing arm (550), so that the vertical swing arm (560) can swing around the circumference of the horizontal swing arm (550). After swinging to the end point, the locking protrusion (561) is slidably engaged with the rotation limiting groove (551) to limit the swing of the vertical swing arm (560).

8. The non-magnetic transfer bed according to claim 7, characterized in that, Also includes: Locking member (600) is threaded to the outer end of the horizontal swing arm (550) and is used to push the connecting sleeve (562) to move axially along the horizontal swing arm (550) until the locking protrusion (561) engages with the rotation limiting groove (551).

9. The non-magnetic transfer bed according to claim 6, characterized in that, The clamping arm (530) also includes: An extension arm (570) is slidably disposed coaxially within the vertical swing arm (560). A hanging piece (510) is disposed at the lower end of the extension arm (570). The peripheral wall of the extension arm (570) is provided with a plurality of axially spaced sliding limit grooves (571). A locking clip (580) is rotatably sleeved on the vertical swing arm (560). The peripheral wall of the locking clip (580) is slidably provided with a radially movable limiting block (581). The locking clip (580) is configured such that, after rotation, it drives the limiting block (581) to engage in one of the sliding limiting slots (571) to lock the axial position of the extension arm (570) and the vertical swing arm (560).

10. The non-magnetic transfer bed according to claim 9, characterized in that, The locking mechanism (580) includes: A rotating core cylinder (590) is rotatably sleeved on the vertical swing arm (560). The outer end face of the limiting block (581) is provided with a first pushed inclined surface (582) that is inclined from top to bottom away from the center of the rotating core cylinder (590). A sliding sleeve (591) is sleeved on the outer periphery of the rotating core cylinder (590). The sliding sleeve (591) can slide along the axial direction of the rotating core cylinder (590). The inner side of the sliding sleeve (591) is provided with a first pushing inclined surface (592) for sliding contact with the first pushed inclined surface (582). An elastic element (593) is provided, with one end acting on the rotating core cylinder (590) and the other end acting on the sliding sleeve (591), for elastically pushing the sliding sleeve (591) downward. Under the elastic pushing action of the elastic member (593), the first pushed inclined surface (582) can move down and press against the first pushed inclined surface (582) with the first pushing inclined surface (592), so that the limiting block (581) slides towards the center side of the rotating core cylinder (590) and engages with the sliding limiting slot (571).

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