CN113749878B - Nuclear magnetic resonance patient transfer car (buggy) - Google Patents

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a nuclear magnetic resonance patient transfer trolley, which comprises a trolley frame, a bedstead lifting mechanism, a brake mechanism and a panel moving mechanism, wherein the panel moving mechanism comprises: the chain wheel shaft, the two driving chain wheels, the two driven chain wheels, the chain positioning and mounting block, the winding drum frame and the panel; the upper parts of the front end and the rear end of the bedstead are fixedly provided with a slideway plate, a plurality of first sliding rollers are arranged in the slideway plate in parallel, panel supporting bars are fixed at the front end and the rear end of the panel, and a plurality of second sliding rollers are arranged in the panel supporting bars in parallel; the first sliding roller is contacted with the side surface of the panel supporting bar, and the second sliding roller is contacted with the upper side surface and the lower side surface of the slideway plate; the width of the panel is larger than that of the bed frame. The invention adopts a mode of manually operating the chain wheel shaft to drive the panel to move easily, and the transfer of the patient between the transfer trolley and the sickbed is completed. Can be used in conjunction with an NMR spectrometer, greatly reducing the time for transferring the patient to the NMR spectrometer.

Description

An MRI patient transfer vehicle

technical field

The invention belongs to the technical field of medical devices, and in particular relates to a nuclear magnetic resonance patient transfer vehicle.

Background technique

For patients with cerebral palsy who cannot move autonomously, during MRI examination, the patient needs to be transferred from the original hospital bed, then transferred to the MRI room, and finally let the patient lie down by lifting and hugging. The whole process takes a long time. In order to save the transfer time of a single patient, the transfer speed is required to be fast, which will inevitably cause secondary injuries to the patient during the transfer process.

Since the NMR special bed is required to be non-magnetic, ordinary transfer beds with motors cannot directly enter the NMR room, and the motors will fail when they encounter a magnetic field, so the existing hospital beds or transfer beds cannot directly adapt to NMR applications. In the end, the patient must lie on a special bed matched with the MRI to perform the MRI examination.

Contents of the invention

The purpose of the present invention is to overcome the defects in the prior art that the patient's transfer speed is slow, it is easy to cause secondary damage to the patient, and the existing patient transfer bed cannot work in the nuclear magnetic resonance room, and to provide a device that can directly cooperate with the nuclear magnetic resonance instrument. 1. A nuclear magnetic resonance patient transfer vehicle that does not need to manually move the patient.

The technical solution adopted by the present invention to solve its technical problems is:

A nuclear magnetic resonance patient transfer vehicle, characterized in that it includes a vehicle frame, a bed frame arranged on the upper part of the vehicle frame, and a bed arranged between the vehicle frame and the bed frame for adjusting the height of the bed frame frame lifting mechanism, a brake mechanism for simultaneously braking the four universal wheels, and a panel moving mechanism. The two driving sprockets at the end, the two driven sprockets that are respectively connected to the two driving sprockets through the first chain transmission, the chain positioning installation block fixed on the first chain, and the chain positioning installation block are fixedly connected The roll frame and the panel fixed on the roll frame; the upper parts of the front and rear ends of the bed frame are fixed with slideway plates, the panels are slidably connected in the slideway plates, and the slideway plates are arranged side by side A plurality of vertically arranged first sliding rollers are installed, panel support bars are fixed at the front and rear ends of the panel, and a plurality of horizontally arranged second sliding rollers are arranged side by side in the panel support bars; the first sliding rollers The roller is in contact with the side of the panel support strip, and the second sliding roller is in contact with the upper and lower sides of the slideway board; the width of the panel is greater than the width of the bed frame.

Further, the two front universal wheels are installed on the same front rotating shaft, and the two rear universal wheels are installed on the same rear rotating shaft, both the front rotating shaft and the rear rotating shaft are square shafts, and the brake mechanism includes : Rotationally connected to the brake rotating shaft on the vehicle frame, the central control wheel swing rod fixedly connected to the middle part of the brake rotating shaft, the front brake connecting rod rotationally connected to one end of the central control wheel swing rod and the rotation connected to the middle The rear brake link at the other end of the control wheel swing lever; the front end of the front brake link is rotatably connected to the front shaft, and the rear end of the rear brake link is rotatably connected to the rear shaft; the brake shaft A brake pedal is installed after passing through the side plate of the vehicle frame at one end.

Further, the bed frame lifting mechanism includes a lower fixed rod fixedly installed on the vehicle frame, a lower sliding rod slidably installed with the vehicle frame, an upper fixed rod fixedly installed on the bed frame, and a fixed rod connected with the vehicle frame. The upper sliding rod for sliding installation of the bed frame, wherein the lower fixing rod, the lower sliding rod, the upper fixing rod and the upper sliding rod form a parallelogram structure; the lower fixing rod and the upper sliding rod The upper fixed rod and the lower sliding rod are connected by two parallel second connecting rods, the lower fixed rod, the lower sliding rod . Both the upper fixing rod and the upper sliding rod are rotationally connected with the first connecting rod or the second connecting rod, the left and right sides of the vehicle frame are symmetrically fixed with lower guide tubes, and the lower guide rods of the lower sliding rod The two ends are slidably connected to the down conduits on both sides; the upper conduits are symmetrically fixed on the left and right sides of the bed frame, and the two ends of the upper sliding rod are slidably connected to the upper conduits on both sides.

Further, the bed frame lifting mechanism also includes a bevel gear driving rod installed on the bed frame through bearings, a driving bevel gear mounted on the bevel gear driving rod, and a driven bevel gear meshed with the driving bevel gear. The bevel gear, the lead screw connected to the output shaft of the driven bevel gear, and the nut slide block helically sleeved on the lead screw, the nut slide block is fixedly installed on the upper slide rod.

Further, the middle of the first connecting rod on the left side and the second connecting rod on the left side are rotatably connected through a pin shaft, and the first connecting rod on the right side is connected to the second connecting rod on the right side. The middle is pivotally connected by a pin shaft, and the two ends of the first connecting rods parallel to each other are fixedly connected by the first positioning tube, and the two ends of the second connecting rods parallel to each other are fixedly connected by the second positioning tube; A bed balance spring is connected between the first positioning tube located below and the second positioning tube located below.

Further, it also includes a shielding mechanism, the shielding mechanism includes: a sealing plate horizontal tube fixedly installed on the upper part of the roll frame, an upper guide roller and a lower guide roller fixedly installed on the left side of the bed frame, Two lower right guide rollers and upper right guide rollers arranged side by side on the right side of the bed frame, and a sealing plate fixing shaft fixedly installed on the lower part of the roll frame; the sealing plate horizontal tube, the lower side The guide roller, the upper guide roller, the lower right guide roller, the upper right guide roller and the fixing shaft of the sealing plate are arranged parallel to each other; one end of a cloth belt is fixedly connected with the horizontal tube of the sealing plate, Then walk around the upper side guide roller, the lower side guide roller, the lower right side guide roller and pass through the gap between the lower right side guide roller and the upper right side guide roller, the cloth The other end of the belt is fixedly connected to the fixed shaft of the sealing plate.

Further, it also includes a conveyor belt movement mechanism, the conveyor belt movement mechanism includes an upper winding pipe mounted on two symmetrically arranged reel stands through bearing rotation and a lower winding pipe arranged parallel to the upper winding pipe , the rear end of the lower tape tube is connected to the reel frame at the rear end through a bearing, the front end of the lower tape tube is connected to a belt drive gear through a clutch, and a chain bracket is fixedly installed on the bed frame, A second chain extending left and right is fixed on the chain bracket, and the belt drive gear is selectively engaged with or disengaged from the second chain.

Further, a chain bracket is fixedly installed on the bed frame, and the second chain is fixedly installed on the bed frame through the chain bracket.

Furthermore, it also includes a vertical rod arranged on the side of the panel, the lower end of the vertical rod is fixedly connected with a clutch swing plate, and the vertical rod is rotatably connected with the roll stand; the roll stand is fixedly connected with a swing plate. Plate shaft frame, the swing plate shaft frame is rotatably connected with a swing plate, the bull’s-eye universal bearing is installed on the clutch swing plate, the front side of the swing plate is an arc-shaped groove, and the bull’s-eye universal bearing The bull's eye ball of the bearing is against the arc groove; the front end of the driving gear is fixed with a clutch convex plate, and the clutch convex plate is against the back side of the pendulum plate.

The beneficial effects of a manual patient transfer vehicle and the method for transferring patients of the present invention are:

1. In the nuclear magnetic resonance detection room, the motor will lose its magnetism and become invalid. In order to ensure the safety and life of the transfer vehicle, the present invention adopts the method of manually shaking the sprocket shaft to drive the panel at the same time to complete the transfer of patients between the transfer vehicle and the hospital bed. , only one person can complete the operation. The patient can be directly pushed into the MRI apparatus through the transfer cart, and used in conjunction with the MRI apparatus, which greatly reduces the time for the patient to be transferred to the MRI apparatus, and the patient only needs to lie flat during the entire transportation process, which is gentle and stable, without Can cause secondary damage to the patient's wound. The width of the panel is greater than the width of the bed frame to ensure that the panel can be partially pressed above the hospital bed when it is docked with the hospital bed, which is convenient for docking with the hospital bed. On the one hand, it ensures the safety of the patient's transfer, and on the other hand, it is convenient to adjust the height of the transfer vehicle.

2. The panel and the slideway plate are slidingly connected by the first sliding roller and the second sliding roller, which greatly reduces the frictional force, so that the operator can easily transfer the patient by shaking the sprocket shaft.

3. By pulling the vertical rod, the bull's-eye universal bearing is driven to rotate, and then the pendulum plate is pushed to swing, so that the belt driving gear is disengaged or meshed with the second chain, which is easy to operate. Through this clutch device, the panel can be selected to move alone or the panel and the second chain. The conveyor belt moves simultaneously.

4. Set up a shielding mechanism, and the cloth belt between the horizontal tube of the sealing plate and the upper guide roller compensates the distance of the panel moving to the right in real time. During the use of the transfer vehicle, the parts below the panel are always invisible, which increases the user's safety. A sense of security, preventing fine items from falling into the transfer vehicle and affecting the operation of the transfer vehicle.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a state diagram of a reversible armrest assembly put down according to an embodiment of the present invention;

Fig. 2 is a state view of the reversible armrest assembly of the embodiment of the present invention after erection;

Fig. 3 is a structural diagram of a panel moving mechanism and a conveyor belt moving mechanism according to an embodiment of the present invention;

Fig. 4 is a structural diagram of the belt drive gear and the second chain clutch part of the embodiment of the present invention;

Fig. 5 is a structural diagram of a bull's-eye universal bearing according to an embodiment of the present invention;

Fig. 6 is a partial structural diagram of an embodiment of the present invention;

7 is a schematic diagram of a conveyor belt movement mechanism according to an embodiment of the present invention;

Fig. 8 is a bottom perspective view of an embodiment of the present invention;

Fig. 9 is a structural view of the bottom part of the embodiment of the present invention;

Fig. 10 is a perspective view of a bed frame lifting mechanism according to an embodiment of the present invention;

Fig. 11 is a partial structural diagram of the reversible armrest assembly of the embodiment of the present invention;

Fig. 12 is a structural diagram of the shielding mechanism of the embodiment of the present invention.

Among the figure: 1, vehicle frame, 2, universal wheel, 3, bed frame, 4, lower fixed rod, 5, lower sliding rod, 6, upper fixed rod, 7, upper sliding rod, 8, first connecting rod, 9. Second connecting rod, 10. First positioning tube, 11. Second positioning tube, 13. Lower guide tube, 14. Upper guide tube, 15. Bevel gear driving rod, 16. Driving bevel gear, 17. Driven bevel gear , 18, lead screw, 19, nut slider, 20, front shaft, 21, rear shaft, 22, brake shaft, 23, central control wheel swing lever, 24, front brake linkage, 25, rear brake linkage, 26 , brake pedal, 27, sprocket shaft, 28, driving sprocket, 29, driven sprocket, 30, chain positioning mounting block, 31, reel holder, 32, panel, 33, slideway plate, 34, first sliding Roller, 35, panel support bar, 36, second sliding roller, 37, upper winding tube, 38, lower winding tube, 39, belt drive gear, 40, chain bracket, 41, second chain, 42, conveying Belt, 43, vertical bar, 44, cross bar, 45, clutch swing plate, 46, swing plate shaft frame, 47, swing plate, 471, arc groove, 48, bull's-eye universal bearing, 49, clutch convex plate , 50, the first overturning link, 51, the armrest side plate, 52, the upper armrest bar, 53, the lower armrest bar, 54, the upper fixed shaft, 55, the lower fixed shaft, 56, the second overturning link, 561, the card Groove, 57, auxiliary guardrail, 58, stop block, 59, positioning block, 60, film-coated cylinder, 61, first chain, 62, sealing plate horizontal tube, 63, upper guide roller, 64, lower guide roller, 65 , lower right side guide roller, 66, upper right side guide roller, 67, sealing plate fixed shaft, 68, cloth belt.

detailed description

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

The directional terms mentioned in the present invention, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the attached drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

It should be noted that, in this embodiment, the left-right direction shown in FIG. 2 is referred to as "left" or "right" in this specification, the end close to the reader is referred to as "front", and the end far away from the reader is referred to as "rear".

A specific embodiment of a nuclear magnetic resonance patient transfer vehicle of the present invention as shown in FIGS. The bed frame 3, the bed frame elevating mechanism for adjusting the height of the bed frame 3, the brake mechanism for simultaneously braking the four universal wheels 2, and the patient handling mechanism arranged between the vehicle frame 1 and the bed frame 3; see FIG. 9 And Fig. 10, the bed frame elevating mechanism comprises the lower fixed rod 4 that is fixedly installed on the vehicle frame 1, the lower sliding rod 5 that is slidably installed with the vehicle frame 1, the upper fixed rod 6 that is fixedly installed on the bed frame 3 and is connected with the bed frame. 3. The upper sliding rod 7 that is slidably installed, wherein the lower fixed rod 4, the lower sliding rod 5, the upper fixed rod 6 and the upper sliding rod 7 form a parallelogram structure, and the lower fixed rod 4 and the upper sliding rod 7 are connected by two mutually parallel The first connecting rod 8 is connected, the upper fixed rod 6 and the lower sliding rod 5 are connected by two parallel second connecting rods 9, the first connecting rod 8 on the left side is connected with the second connecting rod 9 on the left side The middle is rotatably connected by a pin shaft, the middle of the first connecting rod 8 on the right side and the second connecting rod 9 on the right side are rotatably connected by a pin shaft, and the two ends of the first connecting rod 8 parallel to each other pass through the first positioning tube 10 is fixedly connected, the two ends of the second connecting rods 9 parallel to each other are fixedly connected through the second positioning tube 11; the bed balance spring is connected between the first positioning tube 10 located below and the second positioning tube 11 located below (not shown); the lower fixed rod 4, the lower sliding rod 5, the upper fixed rod 6 and the upper sliding rod 7 are all connected in rotation with the first connecting rod 8 or the second connecting rod 9, and the left and right sides of the vehicle frame 1 are symmetrically fixed There is a lower conduit 13, and the two ends of the lower sliding rod 5 are slidably connected to the lower conduit 13 on both sides; the left and right sides of the bed frame 3 are symmetrically fixed with an upper conduit 14, and the two ends of the upper sliding rod 7 are slidably connected to both sides. on the upper conduit 14. The bed frame elevating mechanism also includes the bevel gear driving rod 15 installed on the bed frame 3 through the bearing, the driving bevel gear 16 installed on the bevel gear driving rod 15, the driven bevel gear 17 meshed with the driving bevel gear 16, connected to The leading screw 18 on the output shaft of the driven bevel gear 17 and the nut slider 19 which is helically sleeved on the leading screw 18, the nut slider 19 is fixedly installed on the upper sliding rod 7. The end of the bevel gear driving rod 15 is a polygonal columnar structure, and the end of the gear driving rod passes through or is exposed from the side plate of the bed frame 3, and the bevel gear driving rod 15 is hand-operated after the handle is placed on the polygonal columnar structure. And then drive leading screw 18 to rotate, further drive nut slide block 19 to move, make upper sliding bar 7 and lower sliding bar 5 move simultaneously and reach the lifting that realizes sick bed height. The balance spring of the bed body is always in a stretched state to balance the weight of the bed itself, so that the height of the bed body remains unchanged after the height is adjusted.

Referring to Fig. 8, the two front universal wheels 2 are installed on the same front shaft 20, and the two rear universal wheels 2 are installed on the same rear shaft 21. In this embodiment, the front shaft 20 and the rear shaft 21 are both It is a square shaft, and the brake mechanism includes: a brake shaft 22 rotatably connected to the vehicle frame 1, a central control wheel swing lever 23 fixedly connected to the middle part of the brake shaft 22, and a front brake link 24 rotatably connected to one end of the center control wheel swing lever 23. And the rear brake link 25 that is connected to the center control wheel fork 23 other ends in rotation; One end of the brake rotating shaft 22 passes through the side plate of the vehicle frame 1 and is equipped with a brake pedal 26. The brake pedal 26 is arranged on the left side or the right side of the transfer vehicle, and the brake pedal 26 is rotated at different angles to realize three modes of operation. Braking, under normal movement conditions, the universal wheel 2 can rotate 360 degrees, driving the transfer vehicle to move and rotate in any direction; when the brake pedal 26 is stepped on for an angle, the rotation of the universal wheel 2 around the vertical shaft is restricted, and can only drive The transfer car moves in a straight line; continue to step on the pedal to a larger angle to realize the braking of the universal wheel 2, and the transfer car cannot move. Synchronous braking control of the front universal wheel 2 and the rear universal wheel 2 can be realized through the braking mechanism of this embodiment.

The patient handling mechanism includes: a panel movement mechanism, a conveyor belt movement mechanism, a film covering mechanism, a guardrail assembly and a reversible armrest assembly. Referring to Fig. 3 , the panel movement mechanism includes: a sprocket shaft 27 that is rotationally connected to the bed frame 3, two driving sprockets 28 symmetrically and fixedly installed at both ends of the sprocket shaft 27, and respectively connected with the two driving sprockets 28 through the first chain 61. The two driven sprockets 29, the chain positioning mounting block 30 fixed on the first chain 61, the reel frame 31 fixedly connected with the chain positioning mounting block 30 and the panel 32 fixed on the reel frame 31. The upper part of the front and rear ends of the bed frame 3 is fixedly equipped with a slideway plate 33, and the panel 32 is slidably connected in the slideway plate 33, and a plurality of vertically arranged first slide rollers 34 are installed side by side in the slideway plate 33, and the surface of the panel 32 Front and back two ends are fixed with panel support bar 35, and the second sliding roller 36 that a plurality of transverse settings are arranged side by side in panel support bar 35; The upper and lower sides of the track plate 33 are in contact, and during the sliding process of the panel 32, the panel 32 is guided and friction is reduced, so that the panel 32 can be easily moved by shaking the sprocket shaft 27 with a small force. The outer end of the sprocket shaft 27 passes through the bed frame 3 and has a polygonal columnar structure that can be socketed with the crank. Drive the sprocket shaft 27 to rotate and drive the panel 32 to move left and right by the crank handle.

Referring to Fig. 6 and Fig. 7, the conveyer belt movement mechanism includes the upper winding pipe 37 installed on the two symmetrically arranged reel holders 31 through the bearing rotation and the lower winding pipe 38 arranged in parallel with the upper winding pipe 37. The left end of belt pipe 38 is connected with the reel frame 31 of left end by bearing, and the right end of lower volume belt pipe 38 is connected with belt drive gear 39 by clutch, and chain bracket 40 is fixedly installed on bed frame 3, and chain bracket 40 is fixed There is a second chain 41 extending in the left-right direction, and the belt drive gear 39 selectively engages or disengages from the second chain 41 . One end of the conveyer belt 42 is wound on the upper winding tube 37 , and then wound around the panel 32 to the lower winding tube 38 below the panel 32 . One end of the winding belt pipe 37 passes through the front end or the rear end of the bed frame 3 and has a polygonal columnar structure that is socketed with the crank handle, so as to realize the reset of the conveyor belt 42 and adjust the tightness state. Springs are installed on the upper coiling tube 37 and the lower coiling tube 38, so that the conveyor belt 42 rolled up is always in a tight state.

The guardrail assembly and the reversible handrail assembly are respectively located on the left and right sides of the bed frame 3,

Referring to Fig. 1, Fig. 2 and Fig. 12, the guardrail assembly includes a vertical bar 43 arranged at the front and rear ends of the bed frame 3 and a horizontal bar 44 overlapping between the two vertical bars 43, and the lower end of the vertical bar 43 is fixedly connected with a clutch swing plate 45, the vertical bar 43 is connected with the reel frame 31 in rotation; the reel frame 31 is fixedly connected with a pendulum plate shaft frame 46, the pendulum plate shaft frame 46 is rotatably connected with a pendulum plate 47, and the clutch swing plate 45 is equipped with a bull’s-eye ten thousand To the bearing 48, the front side of the pendulum plate 47 is an arc-shaped groove 471, and the bull's-eye ball of the bull's-eye universal bearing 48 abuts against the arc-shaped groove 471. The front end of the belt driving gear 39 is fixed with a clutch convex plate 49 , and the clutch convex plate 49 leans against the back side of the pendulum plate 47 . Under normal circumstances, the belt drive gear 39 is engaged with the second chain 41, and when the upper panel 32 moves, the winding of the upper winding tube 37 or the winding of the lower winding tube 38 is realized synchronously. The belt drive gear 39 can be disengaged from the second chain 41 when there is no need to wind up the belt while the panel 32 is moving. At this time, it is necessary to manually operate the vertical bar 43 of the swing guardrail assembly, and the vertical bar 43 drives the clutch swing plate 45 to swing, so that the bull's-eye universal bearing 48 moves in the arc groove 471, and then promotes the swing plate 47 to rotate inwardly, and the swing plate 47 promotes the clutch cam 49 and the belt drive gear 39 to move backward, finally the belt drive gear 39 is disengaged from the second chain 41.

1, FIG. 2 and FIG. 11, the reversible armrest assembly includes two first reversible connecting rods 50 symmetrically arranged on the front and rear sides of the bed frame 3, an armrest side plate 51 connected to the end of the first reversible connecting rod 50 and connected to the The upper armrest bar 52 and the lower armrest bar 53 between the two armrest side plates 51; one end of the first turning link 50 is connected to the front and rear sides of the bed frame 3 through the upper fixed shaft 54, and the other end of the first turning link 50 The lower fixed shaft 55 is rotatably connected with the armrest side plate 51, and the front and rear sides of the bed frame 3 are also rotatably connected with a second turning link 56, and the end of the second turning link 56 is rotatably connected to the armrest side plate 51. The rod 52 is fixedly connected with the armrest side plate 51, and the lower armrest bar 53 is rotationally connected with the armrest side plate 51; the middle part of the upper armrest bar 52 is fixed with a vertical auxiliary guardrail 57, and the lower end of the auxiliary guardrail 57 is fixed with a stop block 58, The lower handrail bar 53 passes through the middle of the stop block 58 , and the two ends of the lower handrail bar 53 are fixed with positioning blocks 59 . The upper part of the second overturning link 56 has a draw-in groove 561. When the upper armrest bar 52 is pulled to move upward, the second overturning link 56 and the first overturning link 50 rotate until the upper armrest bar 52 and the lower armrest bar 53 are pulled Right above the panel 32, the card slot 561 is snapped into the upper fixed shaft 54 to realize the positioning of the second overturning link 56 and prevent the entire reversible armrest assembly from turning downwards; at this time, the gear block just abuts against the panel 32 Turn the lower handrail bar 53 so that the positioning block 59 just abuts against the slideway plate 33.

The right end of the slideway plate 33 stretches out from the bed frame 3, and the width of the panel 32 is also greater than that of the bed frame 3, so that when the transfer car is docked with the hospital bed, a part of the panel 32 can extend above the hospital bed, pressing the Futon, prevent futon from sliding. Turning the reversible armrest assembly to the bottom of the bed frame 3 does not affect the overlapping of the panel 32 and the hospital bed.

Referring to Fig. 1 and Fig. 2, the laminating mechanism includes the laminating cylinder 60 that is rotatably installed on the lower part of the bed frame 3, and the laminating cylinder 60 is wound with a disposable film, and the disposable film is wound to the top of the conveyor belt 42 and attached to the Above the conveyor belt 42, prevent the patient from polluting the conveyor belt 42 and keep the transfer vehicle clean.

The manual patient transfer vehicle of the embodiment of the present invention can be used in conjunction with a nuclear magnetic resonance instrument. Since the nuclear magnetic resonance chamber has a magnetic field, the parts of the embodiment of the present invention are all made of 304 stainless steel or aluminum parts after demagnetization to ensure that the transfer vehicle has no magnetism. Because the magnetic field will Make the motor invalid, and the motions of the embodiments of the present invention are all implemented manually.

The working process of the embodiment of the present invention is:

Step 1. Connect the hospital bed to the transfer vehicle. Place the transfer vehicle side by side with the hospital bed, and connect the side of the reversible armrest assembly to the hospital bed, so that the panel 32 is located directly above the hospital bed, pull the disposable film so that a part of the film is left from the right side of the panel 32, and then insert it through the handle The bevel gear drives the rod 15 to lower the bed frame 3 until the lower side of the panel 32 contacts the sick bed.

Step 2. Transfer the patient from the hospital bed to the transfer vehicle. Rotate the sprocket shaft 27 counterclockwise by the crank, the first chain 61 drives the panel 32 to move to the right, at this time the lower winding pipe 38 rotates clockwise on the second chain 41, the upper winding pipe 37 winds, and the lower winding pipe 38 Put the belt, and now the conveyor belt 42 above the panel 32 moves to the left. When the panel 32 scoops up the patient from under the patient, the conveyor belt 42 gradually transports the patient to the panel 32 by friction. After the panel 32 is on, pull the vertical bar 43 of the guardrail assembly to disengage the belt drive gear 39 from the second chain 41, and now rotate the sprocket shaft 27 clockwise to drive the panel 32 to reset to the left, and the conveyor belt 42 no longer moves. After the panel 32 is reset, the rotatable armrest assembly is pulled up to ensure the safety of the patient.

Step 3. Transfer the patient to the nuclear magnetic resonance room with a transfer vehicle and perform nuclear magnetic resonance examination. Push the transfer car to the nuclear magnetic resonance room, during operation, the transfer car can go straight or brake by stepping on the brake pedal 26, and the transfer car can be directly pushed into the nuclear magnetic resonance detector to check the patient lying on the transfer car.

Step 4. Transfer the patient from the transfer vehicle to the hospital bed. After the inspection is completed, directly transfer the patient to the hospital bed in the ward through the transfer vehicle. First, place the transfer vehicle and the hospital bed side by side. The bevel gear driving rod 15 makes the bed frame 3 drop until the lower side of the panel 32 is very close to the hospital bed; the belt drive gear 39 is first disengaged from the second chain 41, and the sprocket shaft 27 is rotated counterclockwise by the crank to drive the panel 32 to move to the right. The middle right position of the hospital bed, then make the belt drive gear 39 mesh with the second chain 41, then turn the sprocket shaft 27 clockwise to make the lower winding pipe 38 rotate counterclockwise, the lower winding pipe 38 takes up the belt, and the upper winding The belt tube 37 is loose, and the conveyor belt 42 above the panel 32 moves to the right, so that when the panel 32 moves to the left, the conveyor belt 42 gradually pushes the patient out of the panel 32 to the hospital bed, completing the transfer of the patient from the transfer vehicle to the hospital bed work.

Through the manual patient transfer vehicle of the embodiment of the present invention, the full name is to carry the patient without manual assistance, and the nuclear magnetic resonance examination can be performed directly without changing the bed, which greatly shortens the examination time of a single patient, effectively improves the utilization efficiency of the nuclear magnetic resonance instrument, and saves The equipment purchase cost of the hospital.

It can be seen from the entire transfer process that as the panel 32 moves to the right, the frame 1 below the panel 32 will be leaked out, affecting the appearance of the entire transfer vehicle, and at the same time, small things are easy to fall down and cause safety hazards. In order to solve the above problems , the embodiment of the present invention is also provided with a shielding mechanism that can adapt to the movement of the panel 32. The shielding mechanism includes: a sealing plate horizontal tube 62 fixedly installed on the upper part of the roll holder 31, and an upper guide roller 63 fixedly installed on the left side of the bed frame 3 and the lower side guide roller 64, the lower right side guide roller 65 and the upper right side guide roller 66 fixedly installed on the right side of the bed frame 3 side by side, and the sealing plate fixing shaft 67 fixedly installed on the bottom of the roll stand 31, The sealing plate transverse tube 62, the lower edge guide roller 64, the upper edge guide roller 63, the lower right side guide roller 65, the upper right side guide roller 66 and the sealing plate fixing shaft 67 are arranged parallel to each other. One end of a cloth belt is fixedly connected with the horizontal tube 62 of the sealing plate, and then goes around the upper guide roller 63, the lower guide roller 64, the lower right guide roller 65 and passes through the lower right guide roller 65 and the upper right guide roller 66 After the gap between, the other end of cloth tape is fixedly connected on the sealing plate fixing shaft 67. Both ends of the cloth tape are fixed on the roll stand 31. During the movement of the panel 32, the shortened distance between the sealing plate fixing shaft 67 and the lower right guide roller is just equal to the sealing plate horizontal tube 62 and the upper guide roller. The extended distance between 63 keeps the length of the entire cloth belt constant, and the cloth belt between the sealing plate horizontal tube 62 and the upper guide roller 63 compensates the distance of the rightward movement of the panel 32 in real time, and the transfer vehicle is in use. Parts below the panel 32 can not be seen all the time, which increases the user's sense of security and prevents fine and broken items from falling into the transfer vehicle, affecting the operation of the transfer vehicle.

It should be understood that the specific embodiments described above are only used to explain the present invention, not to limit the present invention. Obvious changes or variations derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims (8)

1. The utility model provides a nuclear magnetic resonance patient transfer car (buggy), its characterized in that: including frame (1), setting up and being in bedstead (3) on frame (1) upper portion, set up in frame (1) with be used for adjusting between bedstead (3) the bedstead elevating system of bedstead (3) height, be used for brake mechanism and the panel moving mechanism to four universal wheels (2) brake simultaneously, the panel moving mechanism includes: the chain wheel shaft (27) is rotatably connected to the bedstead (3), the two driving chain wheels (28) are symmetrically and fixedly installed at two ends of the chain wheel shaft (27), the two driven chain wheels (29) are respectively in transmission connection with the two driving chain wheels (28) through a first chain (61), the chain positioning and installing block (30) is fixed on the first chain (61), the winding drum frame (31) is fixedly connected with the chain positioning and installing block (30), and the panel (32) is fixed on the winding drum frame (31); the upper parts of the front end and the rear end of the bedstead (3) are fixedly provided with a slideway plate (33), the panel (32) is connected in the slideway plate (33) in a sliding manner, a plurality of vertically arranged first sliding rollers (34) are arranged in the slideway plate (33) in parallel, the front end and the rear end of the panel (32) are fixed with panel supporting bars (35), and a plurality of horizontally arranged second sliding rollers (36) are arranged in the panel supporting bars (35) in parallel; the first sliding roller (34) is contacted with the side surface of the panel supporting bar (35), and the second sliding roller (36) is contacted with the upper side surface and the lower side surface of the slideway plate (33); the width of the panel (32) is greater than the width of the bed base (3); install on same preceding pivot (20) two preceding universal wheel (2), install on same rear axle (21) two following universal wheel (2), preceding pivot (20) with rear axle (21) are the square shaft, and brake mechanism includes: the brake device comprises a brake rotating shaft (22) rotatably connected to the frame (1), a central control wheel swing rod (23) fixedly connected to the middle of the brake rotating shaft (22), a front brake connecting rod (24) rotatably connected to one end of the central control wheel swing rod (23), and a rear brake connecting rod (25) rotatably connected to the other end of the central control wheel swing rod (23); the front end of the front brake connecting rod (24) is rotationally connected with the front rotating shaft (20), and the rear end of the rear brake connecting rod (25) is rotationally connected with the rear rotating shaft (21); one end of the brake rotating shaft (22) penetrates out of a side plate of the frame (1) and then is provided with a brake pedal (26).

2. The nuclear magnetic resonance patient transfer cart of claim 1, wherein: the bed frame lifting mechanism comprises a lower fixed rod (4) fixedly mounted on the bed frame (1), a lower fixed rod (5) slidably mounted with the bed frame (1), an upper fixed rod (6) fixedly mounted on the bed frame (3) and an upper sliding rod (7) slidably mounted with the bed frame (3), wherein the lower fixed rod (4), the lower fixed rod (5), the upper fixed rod (6) and the upper sliding rod (7) form a parallelogram structure; the lower fixing rod (4) is connected with the upper sliding rod (7) through two first connecting rods (8) which are parallel to each other, the upper fixing rod (6) is connected with the lower sliding rod (5) through two second connecting rods (9) which are parallel to each other, the lower fixing rod (4), the lower sliding rod (5), the upper fixing rod (6) and the upper sliding rod (7) are rotationally connected with the first connecting rods (8) or the second connecting rods (9), lower guide pipes (13) are symmetrically fixed on the left side and the right side of the frame (1), and two ends of the lower sliding rod (5) are connected with the lower guide pipes (13) on two sides in a sliding mode; the left side and the right side of the bedstead (3) are symmetrically fixed with upper guide pipes (14), and two ends of the upper sliding rod (7) are connected on the upper guide pipes (14) at two sides in a sliding manner.

3. The nmr patient transfer cart of claim 2, wherein: the bedstead lifting mechanism further comprises a bevel gear driving rod (15) installed on the bedstead (3) through a bearing, a driving bevel gear (16) installed on the bevel gear driving rod (15), a driven bevel gear (17) meshed with the driving bevel gear (16), a lead screw (18) connected to an output shaft of the driven bevel gear (17), and a nut sliding block (19) spirally sleeved on the lead screw (18), wherein the nut sliding block (19) is fixedly installed on the upper sliding rod (7).

4. A nuclear magnetic resonance patient transfer cart according to claim 3, characterized in that: the middle of the first connecting rod (8) on the left side is rotatably connected with the middle of the second connecting rod (9) on the left side through a pin shaft, the middle of the first connecting rod (8) on the right side is rotatably connected with the middle of the second connecting rod (9) on the right side through a pin shaft, two ends of the two parallel first connecting rods (8) are fixedly connected through a first positioning pipe (10), and two ends of the two parallel second connecting rods (9) are fixedly connected through a second positioning pipe (11); a bed body balance spring is connected between the first positioning tube (10) positioned below and the second positioning tube (11) positioned below.

5. The nuclear magnetic resonance patient transfer cart of claim 1, wherein: still including sheltering from the mechanism, shelter from the mechanism and include: a sealing plate transverse tube (62) fixedly arranged at the upper part of the roller frame (31), an upper guide roller (63) and a lower guide roller (64) fixedly arranged at the left side of the bedstead (3), two lower right guide rollers (65) and an upper right guide roller (66) which are fixedly arranged at the right side of the bedstead (3) in parallel, and a sealing plate fixing shaft (67) fixedly arranged at the lower part of the roller frame (31); the sealing plate transverse tube (62), the lower side guide roller (64), the upper side guide roller (63), the lower right side guide roller (65), the upper right side guide roller (66) and the sealing plate fixing shaft (67) are arranged in parallel; one end of a strap with shrouding violently manages (62) fixed connection, then walks around in proper order go up deflector roll (63), lower deflector roll (64) right side guide roll (65) down and pass right side guide roll (65) down with go up behind the gap between right side guide roll (66), the other end fixed connection of strap (68) is in on shrouding fixed axle (67).

6. The NMR patient transfer cart of claim 5, wherein: still include the conveyer belt motion, the conveyer belt motion include through the bearing rotate install on reel frame (31) that the bisymmetry set up go up reel pipe (37) and with go up reel pipe (37) parallel arrangement's lower reel pipe (38), the right-hand member of lower reel pipe (38) and right-hand member reel frame (31) are connected through the bearing, the front end of reel pipe (38) is connected with through the clutch down and is taken drive gear (39), fixed mounting has chain bracket (40) on bedstead (3), be fixed with second chain (41) that the left right direction extends on chain bracket (40), take drive gear (39) selectivity with second chain (41) meshing or break away from.

7. The nuclear magnetic resonance patient transfer cart of claim 6, wherein: the bedstead (3) is fixedly provided with a chain bracket (40), and the second chain (41) is fixedly arranged on the bedstead (3) through the chain bracket (40).

8. The nmr patient transfer cart of claim 7, wherein: the winding drum is characterized by further comprising a vertical rod (43) arranged on the side surface of the panel (32), the lower end of the vertical rod (43) is fixedly connected with a clutch swinging plate (45), and the vertical rod (43) is rotatably connected with the winding drum frame (31); a swing plate shaft frame (46) is fixedly connected to the reel frame (31), a swing plate (47) is rotatably connected to the swing plate shaft frame (46), a bull eye universal bearing (48) is mounted on the clutch swing plate (45), the front side surface of the swing plate (47) is an arc-shaped groove (471), and a bull eye of the bull eye universal bearing (48) abuts against the arc-shaped groove (471); the front end of the belt driving gear (39) is fixed with a clutch convex disc (49), and the clutch convex disc (49) abuts against the back side face of the swinging plate (47).

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