CN111528849A - Limbs positioner for paralytic patient magnetic resonance examination - Google Patents

Abstract

The invention discloses a limb positioning device for magnetic resonance examination of paralyzed patients, which comprises a first bed board and a second bed board, wherein the upper end of the first bed board is connected with the lower end of the second bed board through an extension mechanism, two groups of footstands are respectively arranged at the front ends of the first bed board and the second bed board through jacking mechanisms, unfolding mechanisms are respectively arranged in the first bed board and the second bed board, limiting sleeves are arranged on the unfolding mechanisms through telescopic mechanisms, an adjusting mechanism is arranged in the upper side of the second bed board, and a limiting mechanism is arranged on the adjusting mechanism. According to the invention, the adjusting mechanism and the limiting mechanism are arranged, the position of the limiting mechanism can be adjusted by the adjusting mechanism, so that the limiting mechanism can be attached to the head of a patient, and after the head is placed in the limiting mechanism and the limiting mechanism is driven to be attached to the head by controlling the adjusting mechanism, the limiting mechanism can automatically limit the two sides of the head, so that the operation is simple and convenient, the head of the patient is prevented from moving during detection, and the imaging effect is ensured.

Description

Limbs positioner for paralytic patient magnetic resonance examination

Technical Field

The invention relates to the technical field of magnetic resonance examination, in particular to a limb positioning device for magnetic resonance examination of paralytic patients.

Background

Magnetic resonance examination is a method of medical examination, and is a revolution of medical imaging, biological tissues can be penetrated by short wave components in electromagnetic spectrum, such as X-rays, but can block medium wave components, such as ultraviolet rays, infrared rays and long waves, human tissues allow long wave components generated by magnetic resonance, such as radio waves, to pass through, which is one of basic conditions for applying magnetic resonance to clinic, but at present, a patient needs to lie on an examination bed in advance during magnetic resonance examination, but the existing examination bed plate has a simple structure and cannot limit and position limbs of the patient, when the patient is examined, if the limbs are too large, imaging is blurred, so that the examination result is affected, and in addition, when the paralyzed patient lies on the examination bed, the limbs of the paralyzed patient cannot be automatically placed according to the requirement of the examination position, so that long time is needed before the examination to place the limbs of the paralyzed patient, and the paralyzed patient cannot move limbs during the detection, so that a limb positioning device for magnetic resonance examination of the paralyzed patient is needed.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a limb positioning device for magnetic resonance examination of a paralyzed patient.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a paralysed patient is limbs positioner for magnetic resonance examination, includes first bed board and second bed board, the upper end of first bed board is connected with the lower extreme of second bed board through extending the mechanism, two sets of footstock are installed respectively through jack-up mechanism to the front end of first bed board and second bed board, the inside of first bed board and second bed board all is provided with deployment mechanism, and installs the stop collar through telescopic machanism in the deployment mechanism, the inside adjustment mechanism that is provided with of upside of second bed board, and install stop gear on the adjustment mechanism.

Preferably, extend the mechanism and include the transfer line, the upper end right side of first bed board is transversely inserted through changeing the cover and is equipped with the transfer line, the right-hand member fixed mounting of transfer line has first knob, the jack has been seted up to the lower extreme left and right sides symmetry of second bed board, and the vertical slot of the lower extreme opening part of jack has first threaded rod, and the upper end diameter of first threaded rod equals with the internal diameter of slot, the opening part fixed mounting of slot has first swivel nut, and first swivel nut cup joints on first threaded rod, the lower extreme of first threaded rod is connected with the transfer line through bevel gear.

Preferably, the jacking mechanism comprises a first movable groove, the first movable groove is formed in the first bed plate and the second bed plate, a second threaded rod is transversely arranged in the first movable groove through a rotating sleeve, the thread directions of the left side and the right side of the second threaded rod are opposite, the right end of the second threaded rod is arranged outside, a second knob is fixedly arranged at the right end of the second threaded rod, second threaded sleeves are symmetrically sleeved on the left side and the right side of the second threaded rod, first sliding blocks are symmetrically arranged in the first movable groove, the diameter of each first sliding block is equal to the inner diameter of the first movable groove, each first sliding block is arranged in the first movable groove in a sliding connection mode, each first sliding block is fixedly sleeved on the second threaded sleeve, grooves are formed in the front ends of the first bed plate and the second bed plate, and the back ends of the grooves are communicated with the front ends of the first movable grooves, the improved structure of the sliding block is characterized in that a top seat is arranged in the groove, the diameter of the top seat is equal to the inner diameter of the groove, guide rails are symmetrically arranged on the inner walls of the left end and the right end of the groove, guide blocks are arranged in the guide rails and are connected in a sliding mode, the guide blocks are symmetrically arranged on the left side and the right side of the top seat, connecting rods are symmetrically hinged to the left end and the right end of the back end of the top seat, the back end of each connecting rod is hinged to the front end of the corresponding first sliding block, the front end of the top seat is arc-shaped, and a sponge cushion is glued to the front end of the top seat.

Preferably, the unfolding mechanism comprises a second movable groove, the left side and the right side of the front ends of the first bed plate and the second bed plate are symmetrically provided with the second movable groove, a third threaded rod is transversely installed in the second movable groove through a rotating sleeve, the left side and the right side of the third threaded rod are opposite in thread direction, the right end of the third threaded rod on the right side is arranged on the outside, a third knob is fixedly installed at the right end of the third threaded rod on the right side, transmission bevel gears are installed in the first bed plate and the second bed plate through rotating sleeves and are positioned in the middle positions of the third threaded rods on the left side and the right side, one ends of the third threaded rods close to the transmission bevel gears are connected with the transmission bevel gears through bevel gears, third threaded sleeves are sleeved on the third threaded rods, a second sliding block is arranged in the second movable groove, and the diameter of the second sliding block is equal to the inner diameter of the second movable groove, the second sliding block is arranged in the second movable groove in a sliding connection mode, and the second sliding block is fixedly sleeved on the third screw sleeve.

Preferably, telescopic machanism includes the cover piece, the upper end opening part and the second slider fixed connection of second activity groove are passed through to the back end of cover piece, square groove has been seted up to the front end of cover piece, and the opening part of recess is vertical to be inserted and to be equipped with the stop collar, the back end diameter of stop collar equals with square groove's internal diameter, and square groove's inside is provided with rubber spring, rubber spring one end offsets with square groove's inner wall, rubber spring's the other end offsets with the back end front side of stop collar, the front end of stop collar sets up to arc, the left and right sides the front end opening of stop collar is just to the left and right sides respectively, the stop collar is the cylinder, the front end link of stop collar has the foam-rubber cushion around the parcel.

Preferably, adjustment mechanism includes the third activity groove, the third activity groove has been seted up to the upside inside of second bed board, and the inside of third activity groove is equipped with the fourth threaded rod through changeing the vertical insertion of cover, the upper end that the second bed board was passed to the upper end of fourth threaded rod is arranged in the outside, the upper end fixed mounting of fourth threaded rod has the fourth knob, the fourth swivel nut has been cup jointed on the fourth threaded rod, the inside of third activity groove transversely is provided with the link, the diameter of link equals with the internal diameter of third activity groove, the fixed central point that inlays at the link of fourth swivel nut puts, the back shaft is installed at both ends about the link, vertical opening has been seted up to the front end left and right sides symmetry of third activity groove, the opening part that the back shaft passes through the third activity groove is arranged in the outside.

Preferably, stop gear includes limiting plate and hinge bar, the central point of limiting plate puts and installs the front end at the back shaft through changeing the cover, the limiting plate sets up to arc, the hinge bar is provided with two sets ofly altogether, and is two sets of the lower extreme of hinge bar is articulated continuous, and is two sets of the hinge bar is the type of falling V, and is two sets of the upper end of hinge bar articulates continuous with the upper end of two sets of limiting plates respectively, and is two sets of the lower extreme of hinge bar articulates there is the roof, and the roof is arc, and is two sets of the relative one side of limiting plate all has the veneer to have the foam-rubber cushion, the downside.

Compared with the prior art, the invention has the beneficial effects that: by arranging the extension mechanism, the extension mechanism can change the distance between the first bed board and the second bed board, so that the two groups of jacking mechanisms and the limiting sleeves can be aligned to the back, the hip and the four limbs of a patient, the back and the hip of the patient can be jacked up through jacking according to the detection requirement, the detection is more convenient and accurate, and the four limbs of the patient can be limited through the limiting sleeves, so that the four limbs of the patient are prevented from moving greatly during the detection, and the imaging is blurred;

by arranging the unfolding mechanism, after the four limbs of the patient are placed in the limiting sleeve, the distance between the four limbs of the patient can be adjusted by operating the unfolding mechanism, so that the four limbs are kept flat, the imaging effect is ensured, the adjustment and the operation are convenient and quick, and the flexibility is higher;

through setting up adjustment mechanism and stop gear, adjustment mechanism can adjust stop gear's position for stop gear can laminate patient's head, and after stop gear was put into to the head, drive stop gear laminating head back through control adjustment mechanism, stop gear can carry on spacingly with the both sides of head automatically, and easy operation is convenient, in order to prevent that the patient from detecting the time head and removing, thereby guarantees the formation of image effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic sectional elevation view of the structure of the present invention;

FIG. 3 is an enlarged view of the structure A in FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the structure of FIG. 2 at B-B according to the present invention;

FIG. 5 is an enlarged view of the structure C of FIG. 4 according to the present invention;

FIG. 6 is a schematic view of the structure of FIG. 1 at D-D in accordance with the present invention;

FIG. 7 is an enlarged view of E of FIG. 6 according to the present invention;

FIG. 8 is an enlarged view of F in FIG. 2 according to the present invention;

FIG. 9 is an enlarged view of the structure G in FIG. 1 according to the present invention.

In the figure: 1. a first bed plate; 2. a second bed board; 3. a transmission rod; 4. a first knob; 5. a first threaded rod; 6. a first threaded sleeve; 7. a first movable slot; 8. a second threaded rod; 9. a second knob; 10. a second thread insert; 11. a first slider; 12. a top seat; 13. a guide rail; 14. a guide block; 15. a connecting rod; 16. a second movable slot; 17. a third threaded rod; 18. a third knob; 19. a transmission bevel gear; 20. a third thread insert; 21. a second slider; 22. sleeving blocks; 23. a limiting sleeve; 24. a rubber spring; 25. a third movable slot; 26. a fourth threaded rod; 27. a fourth knob; 28. a fourth thread insert; 29. a connecting frame; 30. a support shaft; 31. a limiting plate; 32. a hinged lever; 33. a top plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: a limb positioning device for magnetic resonance examination of paralyzed patients comprises a first bed board 1 and a second bed board 2, wherein the upper end of the first bed board 1 is connected with the lower end of the second bed board 2 through an extension mechanism, two groups of footstands 12 are respectively arranged at the front ends of the first bed board 1 and the second bed board 2 through jacking mechanisms, unfolding mechanisms are respectively arranged in the first bed board 1 and the second bed board 2, a limiting sleeve 23 is arranged on each unfolding mechanism through a telescopic mechanism, an adjusting mechanism is arranged in the upper side of the second bed board 2, and a limiting mechanism is arranged on each adjusting mechanism;

referring to fig. 2 and 3, the extension mechanism comprises a transmission rod 3, the right side of the upper end of the first bed board 1 is transversely inserted with the transmission rod 3 through a rotating sleeve, the right end of the transmission rod 3 is fixedly provided with a first knob 4, the left side and the right side of the lower end of the second bed board 2 are symmetrically provided with jacks, a vertical slot at the lower end opening of each jack is provided with a first threaded rod 5, the diameter of the upper end of each first threaded rod 5 is equal to the inner diameter of each slot, the opening of each slot is fixedly provided with a first threaded sleeve 6, each first threaded sleeve 6 is sleeved on each first threaded rod 5, the lower end of each first threaded rod 5 is connected with the transmission rod 3 through a bevel gear, when the extension mechanism is used, according to the height of a patient, if two jacking mechanisms do not align to the hip and the back of the patient, only the first knob 4 needs to be rotated, the transmission rod 3 can drive the, when the two groups of first threaded rods 5 rotate, the two groups of first threaded rods can be in threaded fit with the first threaded sleeves 6, then the first threaded rods 5 can drive the first bed plate 1 and the second bed plate 2 to move oppositely through the action of threads, so that the distance between the first bed plate 1 and the second bed plate 2 is changed, the distance between the two groups of jacking mechanisms is changed, patients with different heights can be adapted, the two groups of jacking mechanisms can be aligned to the back and the hip of the patient, and the using effect of the jacking mechanisms is guaranteed;

referring to fig. 1, 4 and 5, the jacking mechanism comprises a first movable groove 7, wherein the first movable groove 7 is formed in each of the first bed plate 1 and the second bed plate 2, a second threaded rod 8 is transversely arranged in each of the first movable grooves 7 through a rotary sleeve, the thread directions of the left side and the right side of each second threaded rod 8 are opposite, the right end of each second threaded rod 8 is arranged outside, a second knob 9 is fixedly arranged at the right end of each second threaded rod 8, second threaded sleeves 10 are symmetrically sleeved at the left side and the right side of each second threaded rod 8, first sliding blocks 11 are symmetrically arranged in each of the first movable grooves 7, the diameter of each first sliding block 11 is equal to the inner diameter of each first movable groove 7, each first sliding block 11 is arranged in each first movable groove 7 in a sliding connection manner, each first sliding block 11 is fixedly sleeved on each second threaded sleeve 10, the front ends of the first bed plate 1 and the second bed plate 2 are provided with a groove, the back end of each groove is communicated with the front end of each first movable groove 7, the groove is internally provided with a top seat 12, the diameter of the top seat 12 is equal to the inner diameter of the groove, the inner walls of the left end and the right end of the groove are symmetrically provided with guide rails 13, guide blocks 14 are arranged in the guide rails 13, the diameter of the guide blocks 14 is equal to the inner diameter of the guide rails 13, the guide blocks 14 are arranged in the guide rails 13 in a sliding connection mode, the guide blocks 14 are symmetrically arranged on the left side and the right side of the top seat 12, the left end and the right end of the back end of the top seat 12 are symmetrically hinged with connecting rods 15, the back end of each connecting rod 15 is hinged with the front end of a first sliding block 11, the front end of the top seat 12 is in a circular arc shape, the front end of the top seat 12 is glued with a sponge cushion, when the device is used, when the hip and the back of a patient need to be lifted up during examination, the distance between a first bed plate 1 and a second bed plate 2 can be adjusted through an, two sets of jacking mechanisms are attached to the hip and the back of a patient, then the second knob 9 is rotated, the second knob 9 can drive the second threaded rod 8 to rotate, when the second threaded rod 8 rotates, two sets of second thread sleeves 10 symmetrically sleeved on the second threaded rod 8 can drive two sets of first sliding blocks 11 to move oppositely in the first movable groove 7 through the action of threads, when the two sets of first movable grooves 7 move oppositely, two sets of connecting rods 15 can be driven to rotate oppositely, when the lower ends of the two sets of connecting rods 15 are folded, the upper ends of the connecting rods 15 can jack the top seat 12, when the top seat 12 moves, the guide block 14 can be driven to move in the guide rail 13, and because the guide rail 13 limits the guide block 14, the top seat 12 can do straight motion, the lifting of the top seat 12 is controlled by rotating the second knob 9, so as to jack up the back or the hip of the patient through the top seat 12, thereby facilitating the detection, the detection imaging effect is better;

as shown in fig. 1, 6 and 7, the unfolding mechanism comprises a second movable groove 16, the left and right sides of the front ends of the first bed plate 1 and the second bed plate 2 are symmetrically provided with the second movable groove 16, a third threaded rod 17 is transversely installed inside the second movable groove 16 through a rotary sleeve, the thread directions of the third threaded rods 17 on the left and right sides are opposite, the right end of the third threaded rod 17 on the right side is arranged outside, the right end of the third threaded rod 17 on the right side is fixedly provided with a third knob 18, the insides of the first bed plate 1 and the second bed plate 2 are respectively provided with a transmission bevel gear 19 through the rotary sleeve, the transmission bevel gear 19 is arranged in the middle position of the third threaded rods 17 on the left and right sides, one ends of the third threaded rods 17 on the left and right sides, which are close to the transmission bevel gear 19, are respectively connected with the transmission bevel gear 19 through a bevel gear, a third screw sleeve 20 is sleeved on the third threaded, the diameter of the second sliding block 21 is equal to the inner diameter of the second movable groove 16, the second sliding block 21 is arranged in the second movable groove 16 in a sliding connection manner, the second sliding block 21 is fixedly sleeved on the third threaded sleeve 20, when the device is used, a patient firstly lies on the device, then four limbs of the patient are placed into the limiting sleeves 23 through the telescopic mechanism, if necessary, the distance between the limiting sleeves 23 on the left side and the right side is adjusted according to the comfort level or the detection requirement of the patient, only the third knob 18 is required to rotate, the third knob 18 drives the right third threaded rod 17 to rotate, the right third threaded rod 17 drives the transmission bevel gear 19 to rotate through the bevel gear, the transmission bevel gear 19 drives the left third threaded rod 17 to rotate through the bevel gear, the left and the right third threaded rods 17 both perform a thread action with the sleeved third threaded sleeve 20 through the rotation, the third threaded sleeve 20 can drive the second sliding block 21 to perform a transverse displacement along the second movable groove 16 through the thread action, when the left and right groups of second sliding blocks 21 perform opposite displacement, the two groups of limiting sleeves 23 are driven to perform opposite displacement through the telescopic mechanism, then the two groups of limiting sleeves 23 drive the limbs of a patient to open or approach the trunk through the opposite displacement, and the limbs of the patient are actively controlled to be placed in this way, so that the situation that the limbs of the patient are placed wrongly, the detection effect is poor, or the limbs cannot be adjusted independently is avoided, the preparation work before detection is longer, and the limbs of the patient can be effectively prevented from moving automatically during detection, so that the imaging is fuzzy, and the detection failure is caused can be avoided;

referring to fig. 7, the telescoping mechanism includes a sleeve block 22, the back end of the sleeve block 22 is fixedly connected to the second slider 21 through the upper opening of the second movable groove 16, a square groove is formed in the front end of the sleeve block 22, a stop collar 23 is vertically inserted into the opening of the groove, the diameter of the back end of the stop collar 23 is equal to the inner diameter of the square groove, a rubber spring 24 is arranged inside the square groove, one end of the rubber spring 24 abuts against the inner wall of the square groove, the other end of the rubber spring 24 abuts against the front side of the back end of the stop collar 23, the front end of the stop collar 23 is arc-shaped, the front end openings of the stop collars 23 on the left side and the right side are respectively aligned to the left side and the right side, the stop collar 23 is a cylinder, the front end of the stop collar 23 is wrapped with a sponge pad, when in use, the stop collar 23 is pulled first to extend out the back end of the stop collar 23 in the rubber spring 24 and extrude the sleeve block 22, then, after, the limb of the patient is placed in the limiting sleeve 23, the limiting sleeve 23 is loosened, the rubber spring 24 in the compressed state can pull the limiting sleeve 23 to reset through elasticity, the limiting sleeve 23 can limit the limb, the limb of the patient is prompted to be incapable of moving, and due to the existence of the telescopic mechanism, the limiting sleeve 23 cannot be locked, so that the patient cannot be tightly bound, and psychological pressure on the patient is prevented;

as shown in fig. 2 and 8, the adjusting mechanism includes a third movable slot 25, a third movable slot 25 is provided inside the upper side of the second bed plate 2, a fourth threaded rod 26 is vertically inserted into the third movable slot 25 through a rotating sleeve, the upper end of the fourth threaded rod 26 passes through the upper end of the second bed plate 2 and is arranged outside, a fourth knob 27 is fixedly installed at the upper end of the fourth threaded rod 26, a fourth threaded sleeve 28 is sleeved on the fourth threaded rod 26, a connecting frame 29 is transversely provided inside the third movable slot 25, the diameter of the connecting frame 29 is equal to the inner diameter of the third movable slot 25, the fourth threaded sleeve 28 is fixedly embedded in the central position of the connecting frame 29, support shafts 30 are installed at the left and right ends of the connecting frame 29, vertical openings are symmetrically provided at the left and right sides of the front end of the third movable slot 25, the support shafts 30 are arranged outside through the opening of the third movable slot 25, when in use, a patient lies on the device first, the top position of the head of the patient is required to be ensured to be right opposite to the top plate 33, then the fourth knob 27 is rotated, the fourth knob 27 can drive the fourth threaded rod 26 to rotate, when the fourth threaded rod 26 rotates, the fourth screw sleeve 28 can be in threaded fit with the fourth threaded rod 26, the fourth screw sleeve 28 can drive the connecting frame 29 to vertically move in the third movable groove 25 through the threaded action, so that the connecting frame 29 can drive the limiting mechanism to vertically move through the supporting shaft 30, the limiting mechanism is controlled to be attached to the head of the patient in the mode, the limiting mechanism automatically wraps and limits the part of the patient, and through the mode, the limiting mechanism can be controlled to limit different people according to the height and the head size of the patient, and the operation is simple and convenient;

referring to fig. 1 and 9, the limiting mechanism includes a limiting plate 31 and two hinge rods 32, the central position of the limiting plate 31 is installed at the front end of the supporting shaft 30 through a rotating sleeve, the limiting plate 31 is configured to be circular arc, two sets of hinge rods 32 are provided, the lower ends of the two sets of hinge rods 32 are hinged to each other, the two sets of hinge rods 32 are in inverted V shape, the upper ends of the two sets of hinge rods 32 are respectively hinged to the upper ends of the two sets of limiting plates 31, the lower ends of the two sets of hinge rods 32 are hinged to a top plate 33, the top plate 33 is circular arc-shaped, a sponge pad is glued to one side of the two sets of limiting plates 31, a sponge pad is glued to the lower side of the top plate 33, when in use, the above adjusting mechanism part is combined, when the head of the patient is located below the top plate 33, the limiting mechanism is moved downward, so that the limiting mechanism continuously moves downwards, then the top plate 33 is limited by the top of the head of the patient, the top plate 33 cannot move, when the limiting mechanism continuously moves downwards, the top plate 33 can abut against the upper ends of the limiting plates 31 through the hinge rods 32, when the connecting frame 29 drives the limiting plates 31 to move downwards through the support shaft 30, the upper ends of the limiting plates 31 can be opened by the hinge rods 32, the limiting plates 31 can rotate on the support shaft 30 through the rotating sleeve, then the upper ends of the two groups of limiting plates 31 can be opened, the lower ends of the two groups of limiting plates 31 can be closed, the two sides of the head of the patient can be clamped and limited by closing the lower ends of the limiting plates 31, by the mode, the head of the patient cannot deviate and rotate in the detection process, the detection effect and imaging are ensured, and the mechanism can automatically clamp and limit the patients with different heights and head, the operation is simple and convenient, and the whole working principle of the invention is described above.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a paralysed patient is limbs positioner for magnetic resonance examination, includes first bed board (1) and second bed board (2), its characterized in that: the utility model discloses a bed table, including first bed board (1), second bed board (2), two sets of footstock (12) are installed respectively through the jack-up mechanism to the upper end of first bed board (1) through extending the mechanism with the lower extreme of second bed board (2), the inside of first bed board (1) and second bed board (2) all is provided with the deployment mechanism, and installs stop collar (23) through telescopic machanism in the deployment mechanism, the inside adjustment mechanism that is provided with of upside of second bed board (2), and installs stop gear on the adjustment mechanism.

2. The limb positioning device for magnetic resonance examination of paralyzed patient according to claim 1, wherein: extend the mechanism and include transfer line (3), the upper end right side of first bed board (1) is transversely inserted through changeing the cover and is equipped with transfer line (3), the right-hand member fixed mounting of transfer line (3) has first knob (4), the jack has been seted up to the lower extreme left and right sides symmetry of second bed board (2), and the vertical slot of lower extreme opening part of jack has first threaded rod (5), and the upper end diameter of first threaded rod (5) equals with the internal diameter of slot, the opening part fixed mounting of slot has first swivel nut (6), and first swivel nut (6) cup joint on first threaded rod (5), the lower extreme of first threaded rod (5) is connected with transfer line (3) through conical gear.

3. The limb positioning device for magnetic resonance examination of paralyzed patient according to claim 1, wherein: the jacking mechanism comprises a first movable groove (7), wherein the first movable groove (7) is formed in the first bed plate (1) and the second bed plate (2), a second threaded rod (8) is transversely installed in the first movable groove (7) through a rotary sleeve, the thread directions of the left side and the right side of the second threaded rod (8) are opposite, the right end of the second threaded rod (8) is arranged outside, a second knob (9) is fixedly installed at the right end of the second threaded rod (8), second thread sleeves (10) are symmetrically sleeved on the left side and the right side of the second threaded rod (8), first sliding blocks (11) are symmetrically arranged in the first movable groove (7), the diameter of each first sliding block (11) is equal to the inner diameter of the corresponding first movable groove (7), each first sliding block (11) is arranged in the corresponding first movable groove (7) in a sliding connection mode, each first sliding block (11) is fixedly sleeved on each second thread sleeve (10), the front ends of the first bed board (1) and the second bed board (2) are respectively provided with a groove, the back end of each groove is communicated with the front end of the first movable groove (7), a top seat (12) is arranged in each groove, the diameter of each top seat (12) is equal to the inner diameter of each groove, guide rails (13) are symmetrically arranged on the inner walls of the left end and the right end of each groove, guide blocks (14) are arranged in the guide rails (13), the diameter of each guide block (14) is equal to the inner diameter of each guide rail (13), each guide block (14) is arranged in each guide rail (13) in a sliding connection mode, the guide blocks (14) are symmetrically arranged on the left side and the right side of each top seat (12), connecting rods (15) are symmetrically hinged to the left end and the right end of each top seat (12), the back end of each connecting rod (15) is hinged to the front end of the first sliding block (11), and the front end of each top seat (, the front end of the top seat (12) is glued with a spongy cushion.

4. The limb positioning device for magnetic resonance examination of paralyzed patient according to claim 1, wherein: the unfolding mechanism comprises a second movable groove (16), wherein the left and right sides of the front end of the first bed board (1) and the second bed board (2) are symmetrically provided with the second movable groove (16), the inside of the second movable groove (16) is transversely provided with a third threaded rod (17) through a rotary sleeve, the left and right sides of the third threaded rod (17) are opposite in thread direction and right side of the third threaded rod (17), the right end of the third threaded rod (17) is arranged outside and right side of the third threaded rod (17), a third knob (18) is fixedly arranged at the right end of the third threaded rod (17), transmission bevel teeth (19) are arranged in the inside of the first bed board (1) and the second bed board (2) through a rotary sleeve, the transmission bevel teeth (19) are arranged at the left and right sides of the middle position of the third threaded rod (17), the left and right sides of the third threaded rod (17) close to one end of the transmission bevel teeth (19) are connected with, the third threaded rod (17) is sleeved with a third threaded sleeve (20), a second sliding block (21) is arranged in the second movable groove (16), the diameter of the second sliding block (21) is equal to the inner diameter of the second movable groove (16), the second sliding block (21) is arranged in the second movable groove (16) in a sliding connection mode, and the second sliding block (21) is fixedly sleeved on the third threaded sleeve (20).

5. The limb positioning device for magnetic resonance examination of paralyzed patient according to claim 1, wherein: the telescopic mechanism comprises a sleeve block (22), the back end of the sleeve block (22) is fixedly connected with a second sliding block (21) through an opening at the upper end of a second movable groove (16), the front end of the sleeve block (22) is provided with a square groove, a limiting sleeve (23) is vertically inserted at the opening of the groove, the diameter of the back end of the limiting sleeve (23) is equal to the inner diameter of the square groove, and a rubber spring (24) is arranged in the square groove, one end of the rubber spring (24) is propped against the inner wall of the square groove, the other end of the rubber spring (24) is propped against the front side of the back end of the limit sleeve (23), the front end of the limiting sleeve (23) is arranged to be arc-shaped, the front end openings of the limiting sleeve (23) at the left side and the right side are respectively opposite to the left side and the right side, the limiting sleeve (23) is a cylinder, and the front end of the limiting sleeve (23) is wrapped with a spongy cushion in a wrapping mode.

6. The limb positioning device for magnetic resonance examination of paralyzed patient according to claim 1, wherein: the adjusting mechanism comprises a third movable groove (25), the upper side of the second bed board (2) is internally provided with the third movable groove (25), the inside of the third movable groove (25) is vertically inserted with a fourth threaded rod (26) through a rotating sleeve, the upper end of the fourth threaded rod (26) penetrates through the upper end of the second bed board (2) and is arranged outside, the upper end of the fourth threaded rod (26) is fixedly provided with a fourth knob (27), the fourth threaded rod (26) is sleeved with a fourth thread sleeve (28), the inside of the third movable groove (25) is transversely provided with a connecting frame (29), the diameter of the connecting frame (29) is equal to the inner diameter of the third movable groove (25), the fourth thread sleeve (28) is fixedly embedded in the central position of the connecting frame (29), supporting shafts (30) are installed at the left end and the right end of the connecting frame (29), vertical openings are symmetrically arranged at the left side and the right side of the front end of the third movable groove (25), the supporting shaft (30) is arranged outside through the opening of the third movable groove (25).

7. The limb positioning device for magnetic resonance examination of paralyzed patient according to claim 1, wherein: stop gear includes limiting plate (31) and hinge bar (32), the central point of limiting plate (31) puts the front end of installing at back shaft (30) through changeing the cover, limiting plate (31) set up to arc, hinge bar (32) are provided with two sets ofly altogether, and are two sets of the lower extreme of hinge bar (32) is articulated continuous, two sets of hinge bar (32) are the type of falling V, and are two sets of the upper end of hinge bar (32) links to each other with the upper end of two sets of limiting plate (31) is articulated respectively, and is two sets of the lower extreme of hinge bar (32) articulates there is roof (33), and roof (33) are arc, and are two sets of the sponge pad has all been glued to the relative one side of limiting plate (31), the downside veneer of roof (33) has the sponge pad.

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