An infection-proof medical transfer bed

Abstract

The present invention discloses an infection-proof medical transport bed, comprising a vehicle body and a movable bed plate mechanism; the movable bed plate mechanism is mounted on a vehicle frame of the vehicle body; the movable bed plate mechanism comprises an upper movable plate, an upper movable cloth, a lower movable plate, and a lower movable cloth; the lower movable plate is arranged below the upper movable plate, and the upper movable plate and the lower movable plate move forward or backward in a synchronous manner; the upper movable cloth is coated on the outer periphery of the upper movable plate, and a locking strip is longitudinally fixed to the upper movable cloth, and the locking strip is locked on the receiving and delivering side of the upper movable cloth by a locking strip driving mechanism or moves with the upper movable cloth after being released; the lower movable cloth is coated on the outer periphery of the lower movable plate, and both ends of the lower movable cloth are fixed on the vehicle frame and located on the receiving and delivering side of the lower movable plate; the transport bed also comprises an isolation pad laying mechanism. The present invention can ensure that the upper and lower movable cloths and the hospital bed are not contaminated during the process of receiving and delivering patients by arranging the isolation pad laying mechanism.

Description

Technical Field

[0001] The present invention relates to a transportation tool technology for loading and unloading patients, and in particular to an infection-proof medical transfer bed. Background Art

[0002] Currently, medical transfer beds are used to move and transfer patients who have difficulty moving before and after surgery, moving patients from beds to transfer beds, and then from transfer beds to operating tables or equipment that requires examination / treatment, or vice versa.

[0003] The medical transfer bed currently sold or used in the market mainly consists of two parts, one part is a body for movement, and the other part is a movable bed plate mechanism for lateral movement to pick up and send patients; for example, the "medical patient transport vehicle" disclosed in Chinese Patent No. 98205338.X includes a body and a conveyor bed table (movable bed plate mechanism), the conveyor bed table consists of a conveyor roller, a driven roller and a conveyor cloth belt installed on the conveyor roller and the driven roller, and the conveyor bed table can be translated horizontally forward and backward under the action of a motor. Another example is the "medical patient transfer vehicle" disclosed in Chinese Patent No. 200610052776.3, the movable bed plate mechanism adopts a double-layer combination structure of an upper moving frame / upper moving cloth and a lower moving frame / lower moving cloth, and specifically includes a cloth rolling shaft frame, a cloth rolling shaft, an end joint seat body, a clutch gear, an upper moving frame / upper moving cloth, a lower moving frame / lower moving cloth and other components.

[0004] However, these medical transfer beds have the following defects:

[0005] 1. Hygiene issues

[0006] The conveyor belt or the upper and lower moving cloths are in direct contact with the patient's body, and the cloth surface is easily dirty, including stains such as blood, human exudate, and therapeutic drug exudate. Since the conveyor belt or the upper and lower moving cloths are all circular closed conveyor cloths, they are difficult to clean and replace when hidden in the machine, and the workload of disassembling and assembling the conveyor cloth once is no less than assembling a new machine. Therefore, the problem of dirty cloth surface cannot be solved. Although the method of replacing the upper and lower moving cloths every time a patient is transported can solve the problem of cross infection, it is not realistic. After all, after the medical equipment is disassembled, professionals are required to re-debug the equipment, which is time-consuming. Therefore, this method is not the best solution. In order to avoid cross infection between patients when different patients use the same transport vehicle, it is necessary to design a transport bed that can realize the function of automatically laying isolation pads.

[0007] 2. Structural issues

[0008] The above-mentioned transmission cloth belt (Chinese Patent 98205338.X) or upper moving cloth (Chinese Patent 200610052776.3) drives the rubber roller to rotate, thereby driving the transmission cloth belt or upper moving cloth set on the rubber roller to move horizontally forward and backward to get close to or away from the operating table / bed. Since the transmission of the cloth surface requires a certain tension, the tension of the cloth surface needs to be adjusted after a long time of use. The cloth surface must be replaced when it is stretched to a certain extent, otherwise the guardrails set on both sides of the vehicle body cannot be closed; the cloth surface of this structure is easy to move left and right and needs to be adjusted; in addition, the setting of the rubber roller will also cause many problems, such as the instruction manual of the "medical patient transfer vehicle" disclosed in Chinese Patent 200610052776.3 Fig.16 The gap between the middle rubber roller 15 and the end joint seat 16 can easily cause clothes to be rolled into the rubber roller, and hair may be caught during the patient's transportation. In addition, there may be problems such as aging of the rubber roller, which requires replacement of the rubber roller and re-adjustment of the equipment operation status.

[0009] For example, the transmission mechanism of Chinese Patent 200610052776.3 adopts clutch transmission, and the clutch adopts a mechanical control structure of two clutch gears engaging and disengaging. Its disadvantage is that the design structure is complex and prone to failure; especially the clutch part, when it needs to be engaged, when the two teeth of the two clutch gears are not coordinated, it will cause unsmooth engagement, and when it needs to be separated, there will be separation resistance when the two teeth are engaged, resulting in large differences in movement and positioning, and the patient transfer work cannot be completed perfectly.

[0010] In addition, the transmission cloth belt or the upper and lower moving cloths are all annular closed conveying cloths, which are in direct contact with the patient's body and are the main components for directly transporting patients. Due to the needs of medical hygiene, the disinfection of the transmission cloth belt or the upper and lower moving cloths can easily lead to cracking of the cloth surface interface and insufficient structural strength.

[0011] 3. Security issues

[0012] For example, the medical patient transfer vehicle in Chinese Patent 200610052776.3 drives the rubber roller to rotate through the driving mechanism, thereby driving the transmission cloth set on the rubber roller to move forward and backward. There is a possibility of misoperation, resulting in the patient hitting the end joint seat body 16, or even crossing the end joint seat body 16 and falling onto the transfer bed frame. Under normal conditions, when a person lies on the transmission cloth, the driving mechanism stops driving the rubber roller to rotate, and the transmission cloth is in a static state. Only the upper and lower moving plates need to be moved to complete the transfer to the desired position. If the patient is already on the transfer bed, if the button for inserting the bed is pressed by mistake, the patient will hit the end joint seat body 16, or even cross the end joint seat body 16 and fall onto the transfer bed frame, resulting in a medical accident. Summary of the invention

[0013] In order to overcome the deficiencies of the prior art, an object of the present invention is to provide an infection-proof medical transfer bed.

[0014] The object of the present invention is achieved by the following technical scheme: an infection-proof medical transport bed, comprising a vehicle body with a lifting mechanism and equipped with universal casters, and a movable bed plate mechanism for transversely moving and picking up patients; the movable bed plate mechanism is installed on the frame of the vehicle body; the movable bed plate mechanism comprises an upper movable plate, an upper movable cloth, a lower movable plate, and a lower movable cloth; the lower movable plate is arranged below the upper movable plate, and the upper movable plate and the lower movable plate move forward or backward transversely synchronously; the upper movable cloth is coated on the outer periphery of the upper movable plate, and the upper movable cloth is longitudinally fixed with a locking strip, and the locking strip is locked on the picking up and picking up side of the upper movable cloth or moves with the upper movable cloth after being released; the lower movable cloth is coated on the outer periphery of the lower movable plate, and the two ends of the lower movable cloth are fixed on the frame of the vehicle body and are located on the picking up and picking up side of the lower movable plate; the infection-proof medical transport bed also comprises an isolation pad laying mechanism, and the isolation pad laying mechanism comprises an isolation pad, and the isolation pad is laid between the upper movable cloth and the lower movable cloth, and one side of the isolation pad is fixed on the picking up and picking up side of the locking strip or the frame.

[0015] Preferably, the isolation pad includes an upper isolation pad for isolating the upper moving cloth from the patient, and a lower isolation pad for isolating the operating bed / hospital bed from the lower moving cloth; the upper isolation pad and the lower isolation pad are stacked and laid between the upper moving cloth and the lower moving cloth; one side of the upper isolation pad is fixed to the locking strip, and one side of the lower isolation pad is fixed to the pick-up and delivery side of the frame.

[0016] Preferably, the isolation pad is automatically unwound by an automatic unwinding device; the automatic unwinding device comprises an unwinding shaft and a coiled material wound on the unwinding shaft; the coiled material is composed of multiple groups of isolation pads to be laid, each group of isolation pads is connected by a narrow strip along the edge, and a tear mark is provided between the isolation pad and the narrow strip along the edge; the starting end of the narrow strip along the edge of the coiled material is fixed on the frame.

[0017] Preferably, the starting end of the narrow strip of the coiled material along the edge is fixed to the power output shaft of the winding motor, and the winding motor is fixed to the frame.

[0018] Preferably, one side of the isolation pad is fixed to the receiving side of the locking bar or the frame by a fastening assembly; the fastening assembly includes a pressing strip for pressing the isolation pad to the locking bar or the receiving side of the frame and a locking member for locking the pressing strip to the locking bar or the receiving side of the frame.

[0019] Preferably, the upper moving cloth is a circular closed conveying cloth; or the upper moving cloth and / or the lower moving cloth are provided with a longitudinal opening.

[0020] Preferably, the locking strip is one-piece or split; the split locking strip includes an upper clamping strip, a lower clamping strip arranged below the upper clamping strip, and a locking switch that clamps and locks the upper clamping strip and the lower clamping strip; the upper movable cloth is arranged between the upper clamping strip and the lower clamping strip.

[0021] Preferably, the upper movable plate and the lower movable plate are driven by a movable plate driving mechanism to synchronously move forward or backward laterally; the movable plate driving mechanism includes a first connecting rod shaft longitudinally arranged at the bottom of the frame of the vehicle body, a first main sprocket installed in the middle of the first connecting rod shaft, a first power output sprocket connected to the first main sprocket through a first roller chain, and a movable plate motor sleeved on the first power output sprocket; first sprocket assemblies are installed at both ends of the first connecting rod shaft; each group of first sprocket assemblies includes a first outer main sprocket, a first slave sprocket, and a first transmission roller chain; the first outer main sprocket is sleeved on the first connecting rod shaft, and the first slave sprocket is respectively installed at the front end and the rear end of the frame, the first outer main sprocket and the first slave sprocket are adapted with a first transmission roller chain, and the two ends of the upper and lower movable plates are respectively fixed on the first transmission roller chain through a first connecting block.

[0022] Preferably, the locking strip is locked by a locking strip driving mechanism at the pick-up and delivery side of the upper moving cloth or moves with the upper moving cloth after being unlocked; the locking strip driving mechanism includes a second connecting rod shaft longitudinally arranged at the bottom of the frame of the vehicle body, a second main sprocket installed in the middle of the second connecting rod shaft, a second power output sprocket connected to the second main sprocket through a second roller chain, and a locking strip motor sleeved on the second power output sprocket; second sprocket assemblies are installed at both ends of the second connecting shaft; each group of second sprocket assemblies includes a second outer main sprocket, a second slave sprocket, and a second transmission roller chain; the second outer main sprocket is sleeved on the second connecting shaft, and the second slave sprocket is respectively installed at the front end and the rear end of the frame, the second outer main sprocket and the second slave sprocket are respectively equipped with a second transmission roller chain, and the two ends of the locking strip are respectively fixed on the second transmission roller chain through a second connecting block.

[0023] Preferably, the locking strip driving mechanism is selected from one or a combination of two or more of a motor, a ratchet, a brake mechanism, and an electromagnetic device.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) One of the core points of the present invention is that an isolation pad laying mechanism is provided. When the movable bed board mechanism of the transfer bed extends the upper and lower movable boards to receive a patient, the upper isolation pad fixed on the locking strip is simultaneously rolled in between the patient and the upper movable cloth as the upper and lower movable boards are extended, thereby isolating the patient from the upper movable cloth; when the movable bed board mechanism needs to retract the upper and lower movable boards to receive a patient, the locking strip is released and locked, and the upper isolation pad moves synchronously with the upper and lower movable boards and the upper movable cloth, and is always placed between the patient and the upper movable cloth, so that blood stains or therapeutic drugs on the patient's body will not stain the upper movable cloth due to the isolation of the upper isolation pad, and the upper movable cloth will not be contaminated due to receiving the patient, thereby reducing the risk of cross infection between patients. In addition, when the movable bed board mechanism of the transfer bed extends the upper and lower movable boards to receive a patient, the lower isolation pad fixed on the receiving side of the frame is simultaneously rolled in between the lower movable cloth and the operating bed as the upper and lower movable boards are extended, and the lower movable cloth will not be contaminated by blood or therapeutic drugs remaining on the operating bed; when the movable bed board mechanism needs to retract the upper and lower movable boards to receive a patient, the lower isolation pad remains on the operating bed, so that the blood or therapeutic drugs remaining on the operating bed will not contaminate the transfer bed due to the isolation of the lower isolation pad, thereby ensuring the hygiene standards of the operating bed when it is used for the second time and reducing the risk of cross infection between patients.

[0026] When the movable bed board mechanism of the transfer bed extends the up and down movable boards to transport the patient, the patient and the upper isolation pad move laterally synchronously as the up and down movable boards extend; after the patient is sent to the top of the bed, the upper isolation pad fixed on the locking strip is released, and when the movable bed board mechanism of the transfer bed retracts the up and down movable boards after sending the person, the upper isolation pad remains between the patient and the bed, thereby ensuring the isolation between the patient and the bed and reducing the risk of infection.

[0027] In general, the infection-proof medical transport bed of the present invention is provided with an isolation pad laying mechanism, so that during the process of receiving and sending patients, the upper isolation pad can ensure that the upper moving cloth will not be contaminated from beginning to end, and after sending the patient back to the bed, the upper isolation pad is synchronously left on the bed, and sanitary isolation between the patient and the bed can be achieved. The lower isolation pad can ensure that the lower moving cloth will not be contaminated by blood stains or therapeutic drugs remaining on the operating bed during the process of receiving patients, and when the patient is received on the transport bed, the lower isolation pad is synchronously left on the operating bed to isolate the infection source.

[0028] (2) The second core of the present invention is to set a locking strip in the longitudinal direction of the upper moving cloth and fix the locking strip on the upper moving cloth, and the locking strip driving mechanism drives the locking strip to move horizontally to pull the upper moving cloth to move horizontally back and forth on the upper moving plate; when the moving bed plate mechanism needs to retract the upper and lower moving plates when receiving a patient and extend the upper and lower moving plates when sending a patient (that is, when the upper moving plate is loaded with a patient), the upper and lower moving plates move horizontally under the drive of the moving bed driving mechanism, and the locking strip driving mechanism drives the locking strip and the upper moving plate to move horizontally back and forth synchronously, and the patient lying on the upper moving plate is relatively still with the locking strip. This process overcomes the friction force generated by the passive rotation of the lower moving cloth relative to the lower moving plate, and overcomes the friction force at the contact surface of the upper and lower moving cloth, so that the upper moving plate, the upper moving cloth and the patient are all relatively still, and the lower moving cloth moves relative to the lower moving plate and the upper moving plate, but the contact part of the lower moving cloth with the bed surface and the bed surface is still relatively still, so the resistance is still relatively small, and there is no problem of rolling up the bed sheet. When the moving bed board mechanism needs to extend the upper and lower moving boards to receive a patient or retract the upper and lower moving boards to send a patient, the locking strip driving mechanism self-locks the locking strip and fixes the locking strip in the initial position. At this time, the upper moving board and the lower moving board move forward and backward laterally at the same time (forward lateral movement refers to the upper and lower moving boards gradually inserting between the patient and the bed, and backward lateral movement refers to the upper and lower moving boards gradually withdrawing between the patient and the bed), the lower moving cloth moves relative to the lower moving board, and the contact part between the lower moving cloth and the bed / operating bed remains relatively still and the upper moving cloth and the lower moving cloth are The fitting surfaces also remain relatively still, and the upper moving cloth and the patient contact part also remain relatively still. Therefore, during the overall movement of the upper and lower moving plates, except for the relative movement between the moving cloth and the corresponding moving plate, there is no other relative movement. It can be said that there is no sliding friction such as between the moving cloth and the bed surface / patient, so the resistance is very small, and the bed and the patient are relatively still with the moving cloth in contact with them, and the bed sheet can ensure that the moving plate is smoothly inserted under the patient, and the bed sheet will not be driven, the patient will not be pushed, and the patient will not be pushed or pulled. The whole pick-up process is very smooth, with low friction and resistance.

[0029] In general, the present invention replaces the method of driving rubber rollers to rotate the transmission cloth in the prior art by providing a locking strip and a power mechanism for the locking strip, thereby simplifying the structure of the movable bed board mechanism. No rubber rollers are required, that is, there are no problems related to rubber rollers, such as no need to adjust the tension of the cloth surface, the movement of the cloth surface, the clipping of hair, the rolling of clothes, the aging of the rubber rollers that need to be replaced, the complex transmission of the clutch, and medical accidents caused by falls due to misoperation. At the same time, the present invention makes it smoother to pick up and drop off patients. Compared with the prior art, the resistance and friction in the process of picking up and dropping off patients are greatly reduced, and the movable plate can be inserted under the patient very smoothly without human intervention. There is no requirement for the friction coefficient of the movable cloth, the moving resistance is smaller, the power consumption is smaller, a smaller power drive motor can be used, the transmission is simpler, and it is more conducive to increasing the load capacity of the whole vehicle and reducing the production cost.

[0030] (3) The upper movable cloth and / or the lower movable cloth is designed to be in an open form, which can meet the needs of disassembly and replacement, achieve the purpose of infection prevention, and will not affect the strength after disinfection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of a medical transfer bed according to a preferred embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the three-dimensional structure of a medical transfer bed according to a preferred embodiment of the present invention from another angle;

[0033] Figure 3 It is a partial three-dimensional schematic diagram of a medical transfer bed according to a preferred embodiment of the present invention;

[0034] Figure 4 It is a three-dimensional schematic diagram of the isolation mat laying mechanism and the movable bed board mechanism of the preferred embodiment of the present invention;

[0035] Figure 5 for Figure 4 A magnified schematic diagram of the middle A area;

[0036] Figure 6 It is a three-dimensional schematic diagram of an isolation pad and an automatic unwinding device in a preferred embodiment of the present invention;

[0037] Figure 7 for Figure 6 A magnified schematic diagram of the middle B area;

[0038] Figure 8 It is a structural schematic diagram of the fastening assembly of the isolation pad laying mechanism of a preferred embodiment of the present invention;

[0039] Fig. 9 It is a three-dimensional schematic diagram of the movable bed board mechanism of a preferred embodiment of the present invention (the movable bed board mechanism is in a state of extending forward);

[0040] Fig.10 This is a schematic diagram of the connection structure of the upper moving plate and the lower moving plate of a preferred embodiment of the present invention (including the upper and lower moving cloths);

[0041] Fig.11 for Fig.10 Enlarged schematic diagram of the middle C area;

[0042] Fig.12 This is a schematic diagram of the connection structure of the upper moving plate and the lower moving plate in a preferred embodiment of the present invention (excluding the upper and lower moving cloths);

[0043] Fig.13 for Fig.12 A magnified schematic diagram of the middle D area;

[0044] Fig.14 for Fig.12 A magnified schematic diagram of the middle E region;

[0045] Fig.15 This is a schematic diagram of the bottom structure of the upper moving plate and the lower moving plate of a preferred embodiment of the present invention (excluding the upper and lower moving cloths);

[0046] Fig.16 for Fig.15 Enlarged schematic diagram of the middle F area;

[0047] Fig.17 It is a three-dimensional schematic diagram of a movable bed board mechanism without a frame in a preferred embodiment of the present invention (the movable bed board mechanism is in a state of extending forward);

[0048] Fig.18 for Fig.17 Enlarged schematic diagram of the middle G region;

[0049] Fig.19 for Fig.17 Enlarged schematic diagram of the middle H region;

[0050] Fig. 20 It is a three-dimensional schematic diagram of another angle of the movable bed board mechanism without a frame in a preferred embodiment of the present invention (the movable bed board mechanism is in a state of extending forward);

[0051] Fig.21 for Fig. 20 A magnified schematic diagram of the middle I region;

[0052] Fig. 22 This is a schematic diagram of the three-dimensional structure of a locking strip according to a preferred embodiment of the present invention;

[0053] Fig.23 for Fig. 22 Enlarged schematic diagram of the middle J region;

[0054] Fig.24This is a schematic diagram of the connection structure of the bed frame, the lower moving cloth and the fixing member in a preferred embodiment of the present invention;

[0055] Fig.25 This is a schematic diagram of the connection structure between the moving cloth and the fixing member in a preferred embodiment of the present invention;

[0056] Fig.26 This is a schematic diagram of the working process of the infection-proof medical transfer bed according to a preferred embodiment of the present invention;

[0057] Fig. 27 This is a schematic structural diagram of the infection-preventing medical transport bed in the initial state of the present invention.

[0058] In the figure: 100, movable bed board mechanism; 1, upper movable plate; 2, upper movable cloth; 3, lower movable plate; 4, lower movable cloth; 5, locking strip; 51, upper clamping strip; 52, lower clamping strip; 53, locking switch; 531, spring seat; 532, hinge shaft; 533, eccentric cam handle; 54, accommodating groove; 6, isolation pad laying mechanism; 61, isolation pad; 611, upper isolation pad; 612, lower isolation pad; 613, narrow strip edge; 614, easy tear mark; 62, automatic unwinding device; 621, unwinding shaft; 622, coil; 623, winding motor; 63, fastening assembly; 631, pressing strip; 632, locking piece; 7, moving plate driving mechanism; 71, first connecting rod shaft; 72, first main sprocket; 73, first roller chain; 74, first power output sprocket; 75, moving plate motor; 76, first outer main sprocket; 77, first slave sprocket ; 78, first transmission roller chain; 79, first connecting block; 8, locking strip drive mechanism; 81, second connecting rod shaft; 82, second main sprocket; 83, second roller chain; 84, second power output sprocket; 85, locking strip motor; 86, second outer main sprocket; 87, second slave sprocket; 88, second transmission roller chain; 89, second connecting block; 9, sliding plate; 10, small roller; 11, guide roller shaft; 12, rigid limit strip; 13, fixing piece; 131, fixing seat; 1311, through groove; 132, rigid fastening strip; 1321, groove; 14, wave pattern; 200, vehicle body; 21, base; 22, vehicle frame; 221, long strip notch; 222, limit groove; 23, lifting bracket; 24, universal caster; 25, brake pedal; 26, lifting motor; 27, telescopic rod; a, horizontal direction; b, longitudinal direction; Z, initial position. DETAILED DESCRIPTION

[0059] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0060] Example 1

[0061] like Figure 1-27 As shown, the infection-proof medical transport bed of Example 1 can realize the automatic laying of the isolation pad, and the isolation pad is automatically unrolled by the automatic unwinding device, as follows:

[0062] Embodiment 1 is one of the preferred embodiments of the present invention, an infection-proof medical transport bed, comprising a vehicle body 200 with a lifting mechanism and universal casters, and a movable bed board mechanism 100 for lateral movement to pick up and transport patients; the movable bed board mechanism is installed on the frame of the vehicle body; in this embodiment, the moving direction of the movable bed board mechanism to stretch forward and backward to pick up and transport patients is the lateral direction, such as Figure 1-2 a direction as shown; on the same plane, the direction perpendicular to the lateral movement direction is the longitudinal direction, such as Figure 1-2 b direction shown; Figure 1-2 The movable bed board mechanism is installed on the vehicle body and does not perform telescopic operation, which is the normal state of the medical transfer bed; the movable bed board mechanism is extended forward to form the front side, and the movable bed board mechanism is retracted backward to form the rear side.

[0063] The vehicle body 200 is composed of a base 21, a frame 22, and a lifting bracket 23 connected between the base and the frame. A universal caster 24 is installed below the base, and a brake pedal 25 is also provided on the guide caster and the universal caster on the rear side of the vehicle body, so that the operator can easily brake the transfer vehicle. The lifting bracket 23 is driven by a lifting motor 26 installed at the bottom of the frame and a telescopic rod 27 connected between the lifting motor and the lifting bracket to complete the lifting action. The left and right ends of the frame are vehicle end frames, and the front and rear sides of the frame are equipped with reversible guardrails (not shown in the figure). A wire is also drawn out from the rear side of the frame, and the end of the wire is connected to a handheld controller (not shown in the figure) for controlling the actions of each motor on the medical patient transfer vehicle.

[0064] like Figure 3-4 , Figure 9-14 As shown, the movable bed board mechanism includes an upper movable plate 1, an upper movable cloth 2, a lower movable plate 3, and a lower movable cloth 4; the lower movable plate is arranged below the upper movable plate, and the upper and lower movable plates are driven by a movable plate driving mechanism 7 to synchronously move forward or backward laterally; the upper movable cloth is coated on the outer periphery of the upper movable plate, and a locking strip 5 is longitudinally fixed to the upper movable cloth, and the locking strip is locked by a locking strip driving mechanism 8 on the pick-up and delivery side of the upper movable cloth or moves with the upper movable cloth after being unlocked; the lower movable cloth is coated on the outer periphery of the lower movable plate, and both ends of the lower movable cloth are fixed on the frame of the vehicle body and are located on the pick-up and delivery side of the lower movable plate.

[0065] like Figure 3-8As shown, the infection-proof medical transport bed also includes an isolation pad laying mechanism 6, which includes an isolation pad 61, and the isolation pad 61 is automatically unwound by an automatic unwinding device 62; the automatic unwinding device 62 includes an unwinding shaft 621 and a coil 622 wound on the unwinding shaft; the coil consists of a plurality of groups of isolation pads 61 to be laid, and each group of isolation pads is connected by a narrow strip edge 613, and an easy-tear mark 614 is provided between the isolation pad and the narrow strip edge; the starting end of the narrow strip edge of the coil is fixed to the power output shaft of the winding motor 623, and the winding motor is fixed to the frame. Each group of isolation pads 61 includes an upper isolation pad 611 for isolating the upper moving cloth from the patient, and a lower isolation pad 612 for isolating the operating bed / hospital bed from the lower moving cloth; the upper isolation pad and the lower isolation pad are stacked, and the isolation pad to be laid is first pre-laid between the upper moving cloth and the lower moving cloth, and one side of the isolation pad is fixed to the locking strip or the pick-up side of the frame; when the isolation pad is laid manually, the other side of the isolation pad is a free end and does not need to be fixed. When the isolation pad is laid automatically, the other side of the isolation pad is fixed to the non-pick-up side of the frame through a narrow strip along the edge. It is preferred to use a motor to reel in the narrow strip along the edge left after each laying of the isolation pad. Preferably, the longitudinal length of the lower moving plate is smaller than the longitudinal length of the upper moving plate. This design ensures that the narrow strip along the edge 613 will not be broken when the upper and lower moving plates are extended, and ensures that the reeling motor 623 can smoothly drive the next group of isolation pads into place. In addition, in order to ensure that the next set of isolation pads can meet the laying requirements and avoid the isolation pad fixing side not being able to be fixed on the locking strip or the receiving side of the frame, it is preferred to set a position sensor at the lower isolation pad in the normal position state to detect whether the lower isolation pad is in place, such as Figure 6-7 As shown, when the lower isolation pad moves to the preset position, the winding motor stops winding the narrow strip along the edge, and the upper and lower isolation pads are manually fixed on the locking strip or the pick-up and delivery side of the frame, and the locking strip driving mechanism and the moving plate driving mechanism are started to operate, so as to realize the automatic laying of the upper and lower isolation pads while realizing the patient transfer.

[0066] In this embodiment, preferably, one side of the isolation pad is fixed to the receiving side of the locking strip or the frame by a fastening assembly 63; Figure 8 As shown, the fastening assembly includes a pressing strip 631 for pressing the isolation pad against the locking strip or the pick-up side of the frame and a locking member 632 for locking the pressing strip against the locking strip or the pick-up side of the frame. Specifically, a limiting groove 222 is provided on the locking strip or / and the frame 22 on the pick-up side, the pressing strip presses the isolation pad and limits it in the limiting groove, and then the locking member is used to lock the pressing strip against the locking strip or / and the pick-up side frame, and the connection between the locking member and the locking strip and the pick-up side frame can be detachable by a threaded fixed connection, a tongue-and-groove fixed connection, or the like.

[0067] The anti-infection medical transfer bed has two main functions for picking up and dropping off patients, namely picking up patients and dropping off patients. Picking up patients means transferring patients from a hospital bed to a medical transfer bed; dropping off patients means transferring patients from a medical transfer bed to a hospital bed. Whether picking up patients or dropping off patients, two actions are required, one is to extend the upper and lower moving plates, and the other is to retract the upper and lower moving plates.

[0068] One of the core points of the present invention is that an isolation pad laying mechanism is provided. When the movable bed board mechanism of the transfer bed extends the upper and lower movable boards to receive a patient, the upper isolation pad fixed on the locking strip is simultaneously rolled in between the patient and the upper movable cloth as the upper and lower movable boards are extended, thereby isolating the patient from the upper movable cloth; when the movable bed board mechanism needs to retract the upper and lower movable boards to receive a patient, the locking strip is released and locked, and the upper isolation pad moves synchronously with the upper and lower movable boards and the upper movable cloth, and is always placed between the patient and the upper movable cloth, so that blood stains or therapeutic drugs on the patient's body will not stain the upper movable cloth due to the isolation of the upper isolation pad, and the upper movable cloth will not be contaminated due to receiving the patient, thereby reducing the risk of cross infection between patients. In addition, when the movable bed board mechanism of the transfer bed extends the upper and lower movable boards to receive a patient, the lower isolation pad fixed on the receiving side of the frame is simultaneously rolled in between the lower movable cloth and the operating bed as the upper and lower movable boards are extended, and the lower movable cloth will not be contaminated by blood or therapeutic drugs remaining on the operating bed; when the movable bed board mechanism needs to retract the upper and lower movable boards to receive a patient, the lower isolation pad remains on the operating bed, so that the blood or therapeutic drugs remaining on the operating bed will not contaminate the transfer bed due to the isolation of the lower isolation pad, thereby ensuring the hygiene standards of the operating bed when it is used for the second time and reducing the risk of cross infection between patients.

[0069] When the movable bed board mechanism of the transfer bed extends the up and down movable boards to transport the patient, the patient and the upper isolation pad move laterally synchronously as the up and down movable boards extend; after the patient is sent to the top of the bed, the upper isolation pad fixed on the locking strip is released, and when the movable bed board mechanism of the transfer bed retracts the up and down movable boards after sending the person, the upper isolation pad remains between the patient and the bed, thereby ensuring the isolation between the patient and the bed and reducing the risk of infection.

[0070] In general, the infection-proof medical transport bed of the present invention is provided with an isolation pad laying mechanism, so that during the process of receiving and sending patients, the upper isolation pad can ensure that the upper moving cloth will not be contaminated from beginning to end, and after sending the patient back to the bed, the upper isolation pad is synchronously left on the bed, and sanitary isolation between the patient and the bed can be achieved. The lower isolation pad can ensure that the lower moving cloth will not be contaminated by blood stains or therapeutic drugs remaining on the operating bed during the process of receiving patients, and when the patient is received on the transport bed, the lower isolation pad is synchronously left on the operating bed to isolate the infection source.

[0071] In this embodiment, the two ends of the lower moving cloth can be fixed in a variety of ways. An integral fixing method can be adopted, such as fixing the lower moving cloth to the bottom of the frame of the vehicle body with a support sheet or fixing the lower moving cloth to the bottom of the frame of the vehicle body with a riveting method, that is, this method is suitable for the lower moving cloth to be a circular closed conveying cloth; a split fixing method can also be adopted, that is, using two fixing parts to correspond to the cloth openings at the two ends of the lower moving cloth respectively, and this method is suitable for an open conveying cloth. The fixing part is a fastener that can realize the fixing of the cloth material in the prior art, and the structure and form of the fastener are not limited.

[0072] The second core of the present invention is to set a locking strip in the longitudinal direction of the upper moving cloth and fix the locking strip on the upper moving cloth, and the locking strip driving mechanism drives the locking strip to move horizontally to pull the upper moving cloth to move horizontally back and forth on the upper moving plate; when the moving bed plate mechanism needs to retract the upper and lower moving plates when receiving a patient or extend the upper and lower moving plates when sending a patient (that is, when the upper moving plate is loaded with a patient), the locking strip is released and locked, the upper moving cloth, the upper moving plate, the lower moving plate and the patient are all relatively still, and the lower moving cloth moves relative to the lower moving plate and the upper moving cloth, but the part of the lower moving cloth that contacts the hospital bed / operating bed is still relatively still with the hospital bed / operating bed; therefore, the resistance is still relatively small, and there is no problem of rolled-up sheets. When the movable bed board mechanism needs to extend the upper and lower movable boards to receive a patient or retract the upper and lower movable boards to deliver a patient, the locking strip driving mechanism self-locks the locking strip and fixes the locking strip in the initial position. At this time, the upper movable board and the lower movable board move forward and backward laterally at the same time (forward lateral movement refers to the gradual insertion of the upper and lower movable boards between the patient and the bed, and backward lateral movement refers to the gradual withdrawal of the upper and lower movable boards between the patient and the bed), the lower movable board moves relative to the lower movable board, and the contact part between the lower movable board and the bed / operating bed remains relatively still and the upper movable board and the lower movable board are relatively still. The mating surfaces of the upper and lower moving plates also remain relatively still, and the contact part of the upper moving cloth with the patient also remains relatively still with the patient. Therefore, during the overall movement of the upper and lower moving plates, except for the relative movement between the moving cloth and the corresponding moving plate, there is no other relative movement. In other words, there is no sliding friction such as between the moving cloth and the bed surface, so the resistance is very small, and the bed and the patient are relatively still with the moving cloth in contact with them, and the bed sheet can ensure that the moving plate is smoothly inserted under the patient, and the bed sheet will not be driven, the patient will not be pushed, and the patient will not be pushed or pulled. The whole pick-up process is very smooth, with very little friction and resistance.

[0073] In general, the present invention replaces the method of driving rubber rollers to rotate the transmission cloth in the prior art by providing a locking strip and a power mechanism for the locking strip, thereby simplifying the structure of the movable bed board mechanism. No rubber rollers are required, that is, there are no problems related to rubber rollers, such as no need to adjust the tension of the cloth surface, the movement of the cloth surface, the clipping of hair, the rolling of clothes, the aging of the rubber rollers that need to be replaced, the complex transmission of the clutch, and medical accidents caused by falls due to misoperation. At the same time, the present invention makes it smoother to pick up and drop off patients. Compared with the prior art, the resistance and friction in the process of picking up and dropping off patients are greatly reduced, and the movable plate can be inserted under the patient very smoothly without human intervention. There is no requirement for the friction coefficient of the movable cloth, the moving resistance is smaller, the power consumption is smaller, a smaller power drive motor can be used, the transmission is simpler, and it is more conducive to increasing the load capacity of the whole vehicle and reducing the production cost.

[0074] In this embodiment, if Figure 10-16 As shown, the connection mode of the upper movable plate and the lower movable plate can be various, and it only needs to be able to realize that the upper and lower movable plates can move forward or backward synchronously. The connection mode of the upper movable plate and the lower movable plate can be directly connected together in an articulated manner through the two ends on the same side of the plate body, and the movable plate driving mechanism directly drives the two plate bodies to move laterally. It is also possible to set the end joint seat body (see the end joint seat body 16 of Chinese Patent 200610052776.3) at the two ends on the same side of the plate body and indirectly connect together, and the movable plate driving mechanism indirectly drives the two plate bodies to move laterally by driving the end joint seat body to move. But the above two methods adopt end point contact, and its strength is slightly weak. In the present embodiment, the sliding plate 9 is set on the same side of the plate body, which can solve the shortcomings of insufficient strength, and the sliding smoothness is high. Among them, a plurality of small rollers 10 are provided at the bottom of the sliding plate; the upper moving plate is hinged or pivoted on the top surface of the sliding plate, and the lower moving plate is hinged or pivoted on the side of the sliding plate; the length of the sliding plate matches the longitudinal length of the two plate bodies, and the width of the sliding plate plus the width of the lower moving plate matches the width of the upper moving plate, so that the upper and lower moving plates and the sliding plate form a "flat moving bed plate", and the combined structure of the upper and lower moving plates and the sliding plate can greatly reduce the thickness of the moving bed plate. The power output end of the moving plate driving mechanism is directly fixedly connected to the sliding plate, or fixedly connected through the second connecting blocks 79 fixed at both ends of the sliding plate, so as to realize power transmission and drive the upper and lower moving plates to move forward or backward synchronously.

[0075] As a preferred embodiment, the front and rear longitudinal edges of the upper moving plate and the front and rear longitudinal edges of the lower moving plate are provided with longitudinal guide rollers 11, and small rollers 10 are installed on the guide rollers. The design of the guide rollers and the small rollers can reduce the resistance when the moving cloth and the moving plate move relative to each other, making the lateral movement of the entire flat moving bed board smoother.

[0076] As a further preferred solution, the upper movable plate and / or the lower movable plate are provided with a wave pattern 14, such as Fig.19 The advantage of the wave pattern design is that it reduces the friction between the moving cloth and the moving plate. In addition, the setting of the wave pattern has a certain guiding effect on the cloth surface.

[0077] In this embodiment, if Figure 4 , Fig. 9 , Figure 17-18 , Figure 20-21 As shown, the movable plate driving mechanism 7 includes a first connecting rod shaft 71 longitudinally arranged at the bottom of the frame of the vehicle body, a first main sprocket 72 installed in the middle of the first connecting rod shaft, a first power output sprocket 74 connected to the first main sprocket through a first roller chain 73, and a movable plate motor 75 mounted on the first power output sprocket; first sprocket assemblies are installed at both ends of the first connecting rod shaft; each group of first sprocket assemblies includes a first outer main sprocket 76, a first slave sprocket 77, and a first transmission roller chain 78; the first outer main sprocket is mounted on the first connecting rod shaft, and the first slave sprocket is respectively installed at the front end and the rear end of the frame, the first outer main sprocket and the first slave sprocket are adapted with a first transmission roller chain, and the two ends of the upper and lower movable plates are respectively fixed on the first transmission roller chain through a first connecting block 79.

[0078] In the present invention, the function of the locking strip is to fix the upper moving cloth and pull it to rotate. Therefore, any component in the prior art that can achieve the function of fixing the upper moving cloth should be included in the protection scope of the locking strip described in the present invention. For example, the locking strip can be designed to be integrated, such as a steel strip or a locking strip made of other materials, fixed under the upper moving cloth by existing fixing methods such as riveting. In addition, the locking strip can also be designed to be separate, clamping and fixing the upper moving cloth from the top and bottom. Figure 22-23 As shown, the split locking strip 5 as a preferred embodiment of the present invention includes an upper clamping strip 51, a lower clamping strip 52 arranged below the upper clamping strip, and a locking switch 53 for clamping and locking the upper clamping strip and the lower clamping strip; the upper movable cloth is arranged between the upper clamping strip and the lower clamping strip. Preferably, the locking switch 53 includes a spring (not shown in the figure), a spring seat 531, a hinge shaft 532, and an eccentric cam handle 533; the spring sleeve is arranged on the spring seat, one end of the spring abuts against the upper clamping strip, and the other end abuts against the lower clamping strip, the spring seat passes through the lower clamping strip and the upper clamping strip in turn, and extends from the surface of the upper clamping strip, and the eccentric cam handle is hinged to the top of the spring sleeve through the hinge shaft.

[0079] The advantage of using the locking strip of this embodiment is that it is highly removable, especially when the cloth surface is dirty and the upper moving cloth needs to be replaced, it only needs to flip the locking switch to loosen the upper clamping strip and the lower clamping strip to remove it.

[0080] The upper moving cloth of this embodiment is a closed annular conveying cloth, and the seams of the upper moving cloth are pressed by the upper clamping strip and the lower clamping strip. This design can prevent the cloth surface interface from cracking due to cloth surface disinfection and reduce the tension of the upper moving cloth. The lower moving cloth of this embodiment is an open conveying cloth, which is fixed to the bottom of the vehicle body frame by two fixing parts. Preferably, Figure 24-25 As shown, the fixing parts 13 of this embodiment include two sets, each set of the fixing parts includes a fixing seat 131 and a rigid fastening strip 132; each of the fixing seats is provided with a through slot 1311 for the lower moving cloth to pass through, and the width of the rigid fastening strip is greater than the width of the through slot. In addition, two long strip notches 221 are provided on the frame of the vehicle body, and after the lower moving cloth covers the periphery of the lower moving plate, the cloth openings at both ends of the lower moving cloth respectively pass through the long strip notches of the frame and the through slots of the fixing seat, and then are respectively fixed to the rigid fastening strip and limited outside the through slots of the fixing seat. Preferably, a groove 1321 is provided on the rigid fastening strip, and after the cloth opening of the lower moving cloth is inserted into the groove, it is fixed to the rigid fastening strip by rivets.

[0081] Of course, as a preferred solution, in order to facilitate the replacement of the moving cloth and meet the needs of medical infection prevention, the upper moving cloth can be designed as an open conveying cloth; the two sides of the longitudinal opening of the upper moving cloth are respectively connected with rigid limiting strips 12, and its structure is similar to that of the rigid fastening strip 132, see Fig.24 The upper clamping strip and the lower clamping strip are provided with a receiving groove 54, see Fig.23 ; The rigid limit strip is installed in the limit groove.

[0082] In the present invention, the main function of the locking strip driving mechanism is to lock the locking strip on the pick-up and delivery side of the upper moving cloth or to release the locking strip so that it can move with the upper moving cloth. When the upper and lower moving plates need to be extended to pick up patients or retracted to deliver patients, the locking strip needs to be locked in the initial position Z (the pick-up and delivery side of the transfer bed) and does not move. At this time, the upper and lower moving plates move forward and backward at the same time (forward lateral movement means that the upper and lower moving plates are gradually inserted between the patient and the bed, and backward lateral movement means that the upper and lower moving plates are gradually withdrawn from between the patient and the bed) to realize the function of picking up or delivering patients. In this embodiment, if Figure 4 , Fig. 9 , Fig.17 , Figure 19-21As shown, the locking strip driving mechanism adopts a motor self-locking locking strip, and the locking strip driving mechanism 8 includes a second connecting rod shaft 81 longitudinally arranged at the bottom of the frame of the vehicle body, a second main sprocket 82 installed in the middle of the second connecting rod shaft, a second power output sprocket 84 connected to the second main sprocket through a second roller chain 83, and a locking strip motor 85 sleeved on the second power output sprocket; both ends of the second connecting shaft are installed with a second sprocket assembly; each set of second sprocket assemblies includes a second outer main sprocket 86, a second slave sprocket 87, and a second transmission roller chain 88; the second outer main sprocket is sleeved on the second connecting shaft, and the second slave sprocket is respectively installed at the front and rear ends of the frame, and the second outer main sprocket and the second slave sprocket are adapted with a second transmission roller chain, and the two ends of the locking strip are respectively fixed on the second transmission roller chain through a second connecting block 89. This locking strip driving mechanism controls the locking and releasing locking functions of the locking strip through a motor alone.

[0083] As a further preferred solution, the first transmission roller chain 78 and the second transmission roller chain 88 are parallel to each other; the first slave sprocket of the moving plate driving mechanism and the second slave sprocket of the locking strip driving mechanism are arranged on the same connecting rod through a bearing sleeve. This design can save the installation space of the two transmission devices of the locking strip driving mechanism and the moving plate driving mechanism, and is more suitable for the transportation process of the transfer bed.

[0084] The working process of the medical transfer bed in the preferred embodiment of the present invention is as follows:

[0085] like Figure 26-27 As shown, the initial state of the medical transport bed before transporting patients is that the movable bed board mechanism is parked on the frame of the vehicle body, and the right side of the medical transport bed is an operating bed or a hospital bed; the locking strip of the movable bed board mechanism is locked on the transport side of the upper movable board, and the fixing piece is fixed on the frame;

[0086] (1) The process of extending the upper and lower moving plates when receiving a patient: the locking bar motor of the locking bar driving mechanism is self-locked, the motor does not rotate, and the second transmission roller chain is also stationary, fixing the locking bar at the initial position. At this time, the upper moving plate and the lower moving plate are driven by the moving plate driving mechanism to move forward horizontally, and the lower moving cloth moves relative to the lower moving plate, while the contact part between the lower moving cloth and the bed / operating bed and the bed surface remains relatively still, and the contact surface between the upper moving cloth and the lower moving cloth also remains relatively still, and the contact part between the upper moving cloth and the patient and the patient also remains relatively still. Therefore, during the overall movement of the upper and lower moving plates, except for the relative movement between the moving cloth and the corresponding moving plate, there is no other relative movement; that is to say, there is no sliding friction between the moving cloth and the operating bed or the bed surface, and between the patient and the upper moving cloth, so the resistance is very small, and the bed sheet or disposable mattress on the bed is actually relatively still with the contact surface of the lower moving cloth, so that the moving plate can be smoothly inserted under the patient, and the bed sheet or disposable mattress will not be moved, and the patient will not be pushed; the patient can be connected to the upper moving bed without human intervention;

[0087] In addition, when the movable bed board mechanism of the transfer bed receives the patient and extends out of the upper and lower movable boards, the upper isolation pad fixed on the locking strip is simultaneously rolled in between the patient and the upper movable cloth as the upper and lower movable boards extend, thereby isolating the patient from the upper movable cloth; and the lower isolation pad fixed on the receiving side of the frame is simultaneously rolled in between the lower movable cloth and the operating bed as the upper and lower movable boards extend, so that the lower movable cloth will not be contaminated by blood stains or therapeutic drugs remaining on the operating bed.

[0088] (2) The process of retracting the upper and lower moving plates when receiving a patient: After the upper moving plate is loaded with the patient, the locking bar motor rotates, and through the linkage action of the second connecting rod shaft, the second outer main sprockets on both sides of the moving bed plate mechanism on the longitudinal direction are synchronously driven to rotate. At this time, the locking bar fixed on the second transmission roller chain is pulled and relatively moved, and the locking bar is transferred to the side away from the receiving side; when the moving bed driving mechanism drives the upper and lower moving plates to retract backward in a lateral direction, the locking bar moves synchronously with the upper moving plate, and the cloth surface of the upper moving cloth is stationary relative to the upper moving plate; that is, the upper moving cloth, the upper moving plate, the lower moving plate and the patient are all relatively stationary, and the lower moving cloth moves relative to the lower moving plate and the upper moving cloth, but the part of the lower moving cloth that contacts the hospital bed / operating bed and the hospital bed / operating bed is still relatively stationary;

[0089] In addition, when the movable bed board mechanism needs to retract the upper and lower movable boards when receiving a patient, the locking strip is released and locked, and the upper isolation pad moves synchronously with the upper and lower movable boards and the upper movable cloth, and is always placed between the patient and the upper movable cloth, so that blood stains or therapeutic drugs on the patient will not stain the upper movable cloth due to the isolation of the upper isolation pad, and the upper movable cloth will not be contaminated due to receiving the patient, thereby reducing the risk of cross-infection between patients; and the lower isolation pad remains on the operating bed, so that blood stains or therapeutic drugs remaining on the operating bed will not contaminate the transfer bed due to the isolation of the lower isolation pad, thereby ensuring the hygiene standards of the operating bed when it is used for the second time and reducing the risk of cross-infection between patients.

[0090] (3) The process of extending the upper and lower moving plates when transporting a patient: the patient is transferred to the medical transfer bed, that is, the upper moving plate is still loaded with the patient, and the moving bed driving mechanism drives the upper and lower moving plates to extend forward laterally; since the locking bar motor is still rotating, the locking bar moves synchronously with the upper moving plate; at this time, the upper moving cloth, the upper moving plate, the lower moving plate and the patient are all relatively stationary, and the lower moving cloth moves relative to the lower moving plate and the upper moving cloth, but the part of the lower moving cloth that contacts the bed / operating bed and the bed / operating bed is still relatively stationary;

[0091] In addition, when the movable bed board mechanism of the transfer bed is extending the up-and-down movable board when sending the patient, the patient and the upper isolation pad are synchronously moved laterally as the up-and-down movable board is extended.

[0092] (4) The process of retracting the upper and lower moving plates when transporting the patient: When the patient is transported to the top of the hospital bed / operating bed, the locking bar motor of the locking bar driving mechanism is self-locked, the motor does not rotate, and the second transmission roller chain is also stationary, fixing the locking bar in the initial position. At this time, the upper and lower moving plates are driven by the moving plate driving mechanism to move horizontally backward, and the lower moving cloth moves relative to the lower moving plate, while the contact portion of the lower moving cloth with the hospital bed / operating bed and the bed surface remains relatively still, and the contact surface of the upper moving cloth with the lower moving cloth also remains relatively still, and the contact portion of the upper moving cloth with the patient and the patient also remains relatively still. Therefore, during the overall movement of the upper and lower moving plates, except for the relative movement between the moving cloth and the corresponding moving plate, there is no other relative movement, and one transfer is completed.

[0093] In addition, after the patient is sent to the top of the bed, the upper isolation pad fixed on the locking strip is loosened. When the movable bed board mechanism of the transfer bed retracts the upper and lower movable boards after sending the person, the upper isolation pad remains between the patient and the bed, ensuring the isolation between the patient and the bed and reducing the risk of infection.

[0094] After the above steps (1)-(4), the transfer bed has completed a transfer action and an isolation pad laying action at the same time, and the isolation pad between the upper and lower movable plates has been used. At this time, the winding motor can be used to drive the narrow strip along the edge 613 to put the next group of isolation pads in place. Of course, the winding motor can also be used to drive the next group of isolation pads in place. The above two operating states will not affect the normal transfer function of the transfer bed, which shows that the isolation pad laying function added by the present invention has an ingenious structure and will not have any effect on the normal transfer of the transfer bed.

[0095] Example 2

[0096] Compared with Example 1, the difference of the infection-proof medical transport bed of Example 2 is that the isolation pad is a single-layer structure, that is, one side of the single-layer isolation pad is fixed to the locking strip or the pick-up side of the frame, and the rest of the structure is the same as Example 1. This embodiment illustrates that when the isolation pad is a bed sheet, the bed sheet required for different places can be replaced according to actual use needs. Of course, the laying of the isolation pad of Example 2 can also be realized by an automatic unwinding device.

[0097] like Figure 26-27 As shown, an infection-proof medical transport bed comprises a vehicle body with a lifting mechanism and universal casters, and a movable bed board mechanism for transversely moving and transporting patients; the movable bed board mechanism is installed on the frame of the vehicle body; the movable bed board mechanism comprises an upper movable board 1, an upper movable cloth 2, a lower movable board 3, and a lower movable cloth 4; the lower movable board is arranged below the upper movable board, and the upper movable board and the lower movable board move forward or backward transversely synchronously; the upper movable cloth is coated on the outer periphery of the upper movable board, and a locking strip 5 is longitudinally fixed to the upper movable cloth The locking strip is locked on the delivery side of the upper moving cloth or moves with the upper moving cloth after being unlocked; the lower moving cloth is wrapped around the outer periphery of the lower moving plate, and the two ends of the lower moving cloth are fixed on the frame of the vehicle body and are located on the delivery side of the lower moving plate; the infection-proof medical transfer bed also includes an isolation pad laying mechanism, and the isolation pad laying mechanism includes an isolation pad (the isolation pad can be an upper isolation pad 611 or a lower isolation pad 612), and the isolation pad is laid between the upper moving cloth and the lower moving cloth, and one side of the isolation pad is fixed on the delivery side of the locking strip or the frame.

[0098] Example 3

[0099] Compared with Example 1, the medical transport bed of Example 3 is different in the locking strip driving mechanism, and the rest of the structure is the same as Example 1. In this embodiment, the locking strip driving mechanism adopts one of the existing locking mechanisms such as a ratchet, a structure similar to the ratchet principle, a brake mechanism, or an electromagnetic device. When the locking mechanism such as a ratchet or an electromagnetic device is unlocked (i.e., the upper moving plate is loaded with a patient), since the patient is pressed on the upper moving cloth, the friction between the upper moving cloth and the upper moving plate is large enough to overcome the friction generated by the passive movement of the lower moving cloth, resulting in the upper moving cloth, the patient, and the upper moving plate being relatively stationary.

[0100] The working process of the medical transfer bed in the preferred embodiment of the present invention is as follows:

[0101] like Figure 26-27 As shown, the initial state of the medical transport bed before transporting patients is that the movable bed board mechanism is parked on the frame of the vehicle body, and the right side of the medical transport bed is an operating bed or a hospital bed; the locking strip of the movable bed board mechanism is locked on the transport side of the upper movable board, and the fixing piece is fixed on the frame;

[0102] (1) The process of extending the upper and lower movable plates when receiving a patient: the locking strip driving mechanism (such as a ratchet or electromagnetic device, etc.) self-locks the locking strip and fixes the locking strip in the initial position. At this time, the upper movable plate and the lower movable plate are driven by the movable plate driving mechanism to move forward horizontally, and the lower movable cloth moves relative to the lower movable plate, while the contact portion between the lower movable cloth and the bed / operating bed and the bed surface remains relatively still, and the contact surface between the upper movable cloth and the lower movable cloth also remains relatively still, and the contact portion between the upper movable cloth and the patient and the patient also remains relatively still. Therefore, during the overall movement of the upper and lower movable plates, except for the relative movement between the movable cloth and the corresponding movable plate, there is no other relative movement; that is, there is no sliding friction between the movable cloth and the bed surface of the operating bed or the hospital bed, and between the patient and the upper movable cloth, so the resistance is very small, and the bed sheet or disposable mattress on the bed is actually relatively still with the contact surface of the lower movable cloth, so that it can be ensured that the movable plate is smoothly inserted under the patient, and the bed sheet or disposable mattress will not be driven, and the patient will not be pushed; the patient can be connected to the upper movable bed without human intervention;

[0103] In addition, when the movable bed board mechanism of the transfer bed receives the patient and stretches out the upper and lower movable boards, the upper and lower movable boards break the connection points on the easy-to-tear position of the isolation pad, so that the isolation pad is disconnected from the narrow strip along the edge; the upper isolation pad fixed on the locking strip is simultaneously rolled in between the patient and the upper movable cloth as the upper and lower movable boards are extended, thereby isolating the patient from the upper movable cloth; and the lower isolation pad fixed on the receiving side of the frame is simultaneously rolled in between the lower movable cloth and the operating bed as the upper and lower movable boards are extended, and the lower movable cloth will not be contaminated by blood stains or therapeutic drugs remaining on the operating bed.

[0104] (2) The process of retracting the upper and lower moving plates when receiving a patient: After the upper moving plate is loaded with the patient, the ratchet is released and locked, and the moving bed driving mechanism drives the upper and lower moving plates to retract backward laterally; under normal circumstances, because the patient is pressed on the upper moving cloth, the friction between the upper moving cloth and the upper moving plate is large enough to overcome the friction caused by the passive movement of the lower moving cloth, resulting in the upper moving cloth and the patient being relatively stationary, and the locking strip is moved to the side away from the receiving side; at this time, the upper moving cloth, the upper moving plate, the lower moving plate and the patient are all relatively stationary, and the lower moving cloth moves relative to the lower moving plate and the upper moving cloth, but the part of the lower moving cloth that contacts the hospital bed / operating bed and the hospital bed / operating bed is still relatively stationary;

[0105] In addition, when the movable bed board mechanism needs to retract the upper and lower movable boards when receiving a patient, the locking strip is released and locked, and the upper isolation pad moves synchronously with the upper and lower movable boards and the upper movable cloth, and is always placed between the patient and the upper movable cloth, so that blood stains or therapeutic drugs on the patient will not stain the upper movable cloth due to the isolation of the upper isolation pad, and the upper movable cloth will not be contaminated due to receiving the patient, thereby reducing the risk of cross-infection between patients; and the lower isolation pad remains on the operating bed, so that blood stains or therapeutic drugs remaining on the operating bed will not contaminate the transfer bed due to the isolation of the lower isolation pad, thereby ensuring the hygiene standards of the operating bed when it is used for the second time and reducing the risk of cross-infection between patients.

[0106] (3) The process of extending the upper and lower movable plates when transporting a patient: the patient is transferred to the medical transfer bed, that is, the upper movable plate is still loaded with the patient, the ratchet is still unlocked, and the movable bed driving mechanism drives the upper and lower movable plates to extend forward laterally; because the patient is still pressed on the upper movable cloth, the friction between the upper movable cloth and the upper movable plate is large enough to overcome the friction caused by the passive movement of the lower movable cloth, resulting in the upper movable cloth and the patient being relatively still; at this time, the upper movable cloth, the upper movable plate, the lower movable plate and the patient are all relatively still, and the lower movable cloth moves relative to the lower movable plate and the upper movable cloth, but the part of the lower movable cloth in contact with the hospital bed / operating bed and the hospital bed / operating bed is still relatively still;

[0107] In addition, when the movable bed board mechanism of the transfer bed is extending the up-and-down movable board when sending the patient, the patient and the upper isolation pad are synchronously moved laterally as the up-and-down movable board is extended.

[0108] In steps (2)-(3), for thin and light patients, even if the patient presses on the upper moving cloth, the friction force generated is small and insufficient to overcome the friction generated by the passive movement of the lower moving cloth, which may lead to the patient being driven by the lower moving cloth to move. Therefore, in order to avoid this situation, in steps (2)-(3), a clutch is added to achieve synchronous movement of the moving plate and the locking strip to ensure that the upper moving cloth does not move; and compared with the two driving mechanisms in Example 1, its power consumption is reduced.

[0109] (4) The process of retracting the upper and lower movable plates when transporting the patient: When the patient is transported to the top of the hospital bed / operating bed, the ratchet locks the locking strip. At this time, the upper movable plate and the lower movable plate are driven by the movable plate driving mechanism to move horizontally backward, and the upper movable cloth and the patient contact part and the patient also remain relatively still. The lower movable cloth moves relative to the lower movable plate, while the lower movable cloth and the hospital bed / operating bed contact part and the bed surface remain relatively still, and the fitting surfaces of the upper movable cloth and the lower movable cloth also remain relatively still. The upper movable cloth and the patient contact part and the patient also remain relatively still. Therefore, during the overall movement of the upper and lower movable plates, except for the relative movement between the movable cloth and the corresponding movable plate, there is no other relative movement, and one transfer is completed.

[0110] In addition, after the patient is sent to the top of the bed, the upper isolation pad fixed on the locking strip is loosened. When the movable bed board mechanism of the transfer bed retracts the upper and lower movable boards after sending the person, the upper isolation pad remains between the patient and the bed, ensuring the isolation between the patient and the bed and reducing the risk of infection.

[0111] Example 4

[0112] In the prior art, the upper and lower moving cloths are both circular closed conveying cloths, and once installed, they cannot be disassembled and replaced with new ones, and can only be disinfected with alcohol. Therefore, if the disinfection is not sufficient, cross infection is likely to occur. It can be seen that the moving cloth of the existing medical transfer bed cannot be disassembled and cleaned, and it is difficult to achieve the purpose of complete infection prevention. Therefore, this embodiment 4 provides a medical transfer bed with an easily replaceable moving cloth. The difference of this medical transfer bed is that the upper moving cloth and / or the lower moving cloth are designed in an open form, which can meet the needs of disassembly and replacement and achieve the purpose of infection prevention. The rest of the structure is the same as that of embodiment 1.

[0113] Specifically, compared with Example 1, the medical transfer bed of Example 4 is different in that the upper movable cloth is provided with a longitudinal opening; rigid limit strips 12 are respectively connected to the two sides of the longitudinal opening of the upper movable cloth; a limit groove is provided between the upper clamping strip and the lower clamping strip; and the rigid limit strip is installed in the limit groove.

[0114] The two ends of the lower moving cloth are preferably fixed to the bottom of the frame of the vehicle body by two fixing members to fix the two ends of the lower moving cloth respectively. Figure 24-25As shown, the fixing parts 13 of this embodiment include two sets, and each set of the fixing parts includes a fixing seat 131 and a rigid fastening strip 132; each of the fixing seats is provided with a through slot 1311 for the lower moving cloth to pass through, and the width of the rigid fastening strip is greater than the width of the through slot. In addition, two long strip notches 221 are provided on the frame of the vehicle body. After the lower moving cloth covers the periphery of the lower moving plate, the cloth openings at both ends of the lower moving cloth respectively pass through the long strip notches of the frame and the through slots of the fixing seat in turn, and then are respectively fixed to the rigid fastening strip, and are limited outside the through slots of the fixing seat. Preferably, a groove 1221 is provided on the rigid fastening strip, and after the cloth opening of the lower moving cloth is inserted into the groove, it is fixed to the rigid fastening strip by rivets. As a further preferred embodiment, each set of the fixing parts can also be arranged in sections, such as Fig.25 As shown, in this embodiment, it is divided into three sections, but it can also be divided into two sections. The advantage of the segmented fixing member is that it improves the rigidity of the vehicle body frame.

[0115] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An infection-proof medical transport bed, comprising a vehicle body with a lifting mechanism and universal casters, and a movable bed plate mechanism for lateral movement to pick up and transport patients; the movable bed plate mechanism is installed on the frame of the vehicle body; characterized in that: The movable bed board mechanism comprises an upper movable plate, an upper movable cloth, a lower movable plate and a lower movable cloth; the lower movable plate is arranged below the upper movable plate, and the upper movable plate and the lower movable plate move forward or backward synchronously and laterally; the upper movable cloth is coated on the outer periphery of the upper movable plate, and a locking strip is longitudinally fixed to the upper movable cloth, and the locking strip is locked on the pick-up and delivery side of the upper movable cloth or moves with the upper movable cloth after being released; the lower movable cloth is coated on the outer periphery of the lower movable plate, and both ends of the lower movable cloth are fixed on the frame of the vehicle body and are located on the pick-up and delivery side of the lower movable plate; the infection-proof medical transport bed also comprises an isolation pad laying mechanism, and the isolation pad laying mechanism comprises an isolation pad, and the isolation pad is laid between the upper movable cloth and the lower movable cloth, and one side of the isolation pad is fixed on the pick-up and delivery side of the locking strip or the frame; The locking strip is locked by a locking strip driving mechanism at the pick-up and delivery side of the upper moving cloth or moves with the upper moving cloth after being unlocked; the locking strip driving mechanism comprises a second connecting rod shaft longitudinally arranged at the bottom of the frame of the vehicle body, a second main sprocket installed in the middle of the second connecting rod shaft, a second power output sprocket connected to the second main sprocket through a second roller chain, and a locking strip motor sleeved on the second power output sprocket; a second sprocket assembly is installed at both ends of the second connecting shaft; each group of second sprocket assemblies comprises a second outer main sprocket, a second slave sprocket, and a second transmission roller chain; the second outer main sprocket is sleeved on the second connecting shaft, and the second slave sprocket is respectively installed at the front end and the rear end of the frame, the second outer main sprocket and the second slave sprocket are adapted with a second transmission roller chain, and the two ends of the locking strip are respectively fixed on the second transmission roller chain through a second connecting block.

2. The infection-proof medical transport bed according to claim 1, characterized in that: The isolation pad comprises an upper isolation pad for isolating the upper moving cloth from the patient, and a lower isolation pad for isolating the operating bed / patient bed from the lower moving cloth; the upper isolation pad and the lower isolation pad are stacked and laid between the upper moving cloth and the lower moving cloth; one side of the upper isolation pad is fixed on the locking strip, and one side of the lower isolation pad is fixed on the pick-up and delivery side of the frame.

3. The infection-proof medical transport bed according to claim 1 or 2, characterized in that: The isolation pad is automatically unwound by an automatic unwinding device; the automatic unwinding device includes an unwinding shaft and a coiled material wound on the unwinding shaft; the coiled material is composed of multiple groups of isolation pads to be laid, each group of isolation pads is connected by a narrow strip along the edge, and an easy-tear mark is provided between the isolation pad and the narrow strip along the edge; the starting end of the narrow strip along the edge of the coiled material is fixed on the frame.

4. The infection-proof medical transfer bed according to claim 3, characterized in that: The starting end of the narrow strip of the coiled material along the edge is fixed on the power output shaft of the winding motor, and the winding motor is fixed on the vehicle frame.

5. The infection-proof medical transfer bed according to claim 3, characterized in that: One side of the isolation pad is fixed to the receiving side of the locking strip or the frame through a fastening assembly; the fastening assembly includes a pressing strip for pressing the isolation pad to the locking strip or the receiving side of the frame and a locking member for locking the pressing strip to the locking strip or the receiving side of the frame.

6. The infection-proof medical transport bed according to claim 1, characterized in that: The upper moving cloth is a circular closed conveying cloth; or the upper moving cloth and / or the lower moving cloth are provided with longitudinal openings.

7. The infection-proof medical transport bed according to claim 1, characterized in that: The locking strip is one-piece or split; the split locking strip includes an upper clamping strip, a lower clamping strip arranged below the upper clamping strip, and a locking switch for clamping and locking the upper clamping strip and the lower clamping strip; the upper movable cloth is arranged between the upper clamping strip and the lower clamping strip.

8. The infection-proof medical transport bed according to claim 1, characterized in that: The upper movable plate and the lower movable plate are driven by the movable plate driving mechanism to synchronously move forward or backward laterally; the movable plate driving mechanism includes a first connecting rod shaft longitudinally arranged at the bottom of the frame of the vehicle body, a first main sprocket installed in the middle of the first connecting rod shaft, a first power output sprocket connected to the first main sprocket through a first roller chain, and a movable plate motor sleeved on the first power output sprocket; first sprocket assemblies are installed at both ends of the first connecting rod shaft; each group of first sprocket assemblies includes a first outer main sprocket, a first slave sprocket, and a first transmission roller chain; the first outer main sprocket is sleeved on the first connecting rod shaft, and the first slave sprocket is respectively installed at the front end and the rear end of the frame, the first outer main sprocket and the first slave sprocket are adapted with the first transmission roller chain, and the two ends of the upper and lower movable plates are respectively fixed on the first transmission roller chain through a first connecting block.

9. The infection-proof medical transport bed according to claim 1, characterized in that: The locking strip driving mechanism is selected from one or a combination of two or more of a motor, a ratchet, a brake mechanism, and an electromagnetic device.

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