JP4455439B2 - Patient transfer device - Google Patents

Description

  In the present invention, when transferring a patient from a bed or stretcher to an operating table or from an operating table to a bed or stretcher in a hospital or the like, the patient can be easily transferred to either the left or right side, and The present invention relates to a patient transport device that can reduce a burden on a patient when scooping and carrying out the patient.

  In hospitals and the like, a patient in a ward is moved to the operation preparation room together with a bed, and the patient on the bed is transferred from the bed to the operation table in the operation preparation room. However, if the ward bed is not movable or cannot be moved easily, the patient on the ward bed is placed on the stretcher, moved to the operation preparation room, and then moved from the stretcher to the operating table. We are working to change patients. The above-mentioned patient replacement work is usually performed by lifting the patient with human power (5-6 nurses). Alternatively, a patient transfer device is used as a device for facilitating such work for changing the patient.

  As a conventional patient transfer device, there is one shown in Patent Document 1. The patient transfer device includes an endless upper transfer belt that is wound around a transfer plate and a separation plate that are movable in the left-right direction, and that is wound around two upper guide rollers to be adjustable in length. And an endless lower insertion belt which is wound between left and right lower insertion plates provided at the lower portion of the upper transfer belt and which is wound around two lower guide rollers to be adjustable in length.

  Moreover, as a conventional transfer assistance apparatus, there exists a thing shown in patent document 2. FIG. This transfer assistance device reciprocates the lower transfer plate by rotating the roller forward and backward by the drive mechanism to rotate the drive sheet, and rotates the lower transfer sheet as the lower transfer plate reciprocates. By moving the connecting and fixing part of the lower transfer sheet and the middle transfer plate from one end side to the other end side of the lower transfer plate, the middle transfer plate is moved back and forth, and the middle transfer plate is moved back and forth. The upper transfer plate is reciprocated along with the movement of the upper transfer plate, so that the upper transfer plate is moved by the rotation of the drive sheet and the lower transfer sheet is moved by the lower transfer sheet. , So that the upper transfer plate can be sufficiently inserted under the patient's body.

Further, as a conventional transfer device, there is one shown in Patent Document 3. This transfer device includes an upper mechanism and a lower mechanism combined so as to be stacked in the vertical direction, and each of the upper mechanism and the lower mechanism is an endless belt that is circulated in the forward and reverse directions independently of each other. It has.
Japanese Patent No. 2825516 JP 2001-37815 A JP 2004-532 A

  However, in the patient transfer device of Patent Document 1, upper and lower endless belts are respectively wound around two rollers that can move in the left-right direction, and are arranged for each roller, and each roller and upper and lower endless sheets Therefore, the distance over which the wound body can be extended from the patient transfer apparatus is a distance within a range where the left and right rollers do not collide, and therefore the extension distance is short. Therefore, in order to extend the patient on the bed so as to scoop up, it is necessary to increase the width of the left and right of the patient transfer device, and thus patients such as hospitals that need to move quickly in a narrow space interval It is unsuitable for a transfer device and is difficult to apply in practice.

  Further, in Patent Document 1, since the upper transfer belt is stretched between two guide rollers in an S shape between the upper and lower endless belts, the length is adjusted. There will be friction due to movement in the opposite direction due to the six layers. In the patient transfer device, it is necessary to reduce the frictional resistance by the belt as much as possible to enable smooth movement. For this purpose, the thickness dimension by the upper and lower endless belts is designed to be as thin as possible. However, the thickness of the overhanging portion was about 50 to 60 mm. The upper and lower endless belts sneak into the patient's back in the state where the transfer plate is laid down, scoop the patient on the transfer plate, or carry out the patient who has taken in the transfer plate to the bed or the like However, as described above, when the thickness of the overhanging portion is as thick as about 50 to 60 mm, the overhanging portion is satisfactorily inserted between the patient's back and the bed in the sleeping state, and the patient is scooped up. In addition, because the thickness of the overhanging portion is large, it is compulsory to make the patient's body slanted at the time of scooping and taking out the patient, which places a heavy burden on the patient. Had a problem.

  In the transfer assistance device of Patent Document 2, the upper transfer plate can be sufficiently inserted under the patient's body by two-stage extension. However, this device is designed to project the upper transfer plate on only the left and right sides of the transfer assistance device. When transporting a patient who is sleeping on a bed or an operating table in a hospital or the like, Although it is necessary to transfer the patient from either side, as described above, in the transfer assistance device that can transfer only on the left and right sides, the direction must be changed depending on the transfer direction, and the operation is In addition to being troublesome, there are cases where the direction cannot be changed between narrow beds.

  In addition, in the transfer assistance device of Patent Document 2, it is conceivable that the upper transfer plate is extended symmetrically so that the upper transfer plate can be extended to the left and right sides. However, since the left and right extension mechanisms are independent, there is a switching mechanism for the extension mechanism at the top of the transfer assistance device. There is a problem that it is difficult to transfer a patient on the left and right center of the apparatus.

  In the transfer device of Patent Document 3, an endless belt is provided on the outer periphery of each of the upper mechanism and the lower mechanism provided to be stacked one above the other, and the drive device for individually driving the endless belt. Therefore, the total thickness of the upper mechanism and the lower mechanism is about 60 to 70 mm even if designed to be thin.

  As described above, when the thickness of the upper mechanism and the lower mechanism is increased to a thickness of 60 to 70 mm, the transfer device is satisfactorily inserted between the patient's back and bed in the sleeping state. It can not be scooped out, or because it is thick, it is compulsory to tilt the patient's body at the time of scooping and taking out the patient, which places a heavy burden on the patient Had a problem.

  The present invention has been made in view of the above-mentioned conventional problems, and with a simple configuration, a patient can be transferred by extending a transfer table with a large stroke to either the left or right side of the apparatus body. And it aims at providing the patient conveyance apparatus which enabled it to reduce the burden to the patient at the time of a patient's scooping and carrying out.

The present invention has a transfer platform that has an upper winding body and left and right lower winding bodies provided at the lower part of the upper winding body and can be extended to the left and right of the apparatus main body by a transfer mechanism;
An endless upper sheet that is wound around the upper winding body and led to the lower part through the space between the left and right lower winding bodies and is adjustable in length by a length adjusting device provided in the apparatus main body;
The first brake capable of fixing the center position of the length of the upper seat in the length adjusting device, and the left side portion and the right side portion of the upper seat between the length adjusting device and the transfer table are independently fixed. Possible second and third brakes;
A left and right lower seat wound around each of the left and right lower wound bodies, one end fixed to the apparatus main body, and the other end wound on the left and right winding devices provided in the apparatus main body,
When the transfer table is extended and retracted, the upper sheet on the upper surface of the upper winding body is stationary with respect to the transfer table, and when the transfer table is extended, the upper sheet on the upper surface of the upper winding body is transferred. It is possible to switch between a state to be taken in on the table and a state in which the upper sheet on the upper surface of the upper winding body is carried out to the outside when the transfer table is extended ,
When the transfer table is extended to the left, the left lower winding body moves to the left together with the upper winding body by the left locking portion, and when the transfer table is extended to the right, the lower lower winding body is The present invention relates to a patient transport device characterized in that it is moved to the right side together with the upper winding body by the right engaging portion .

  It is preferable to provide a sheet guide body that is always located on the apparatus main body and guides the upper sheet between the upper and lower winding bodies of the transfer table.

When the transfer table is extended, the unloading load of the transfer table is reduced by accelerating the start of unwinding of the upper sheet and the lower sheet relative to the start of the transfer table, and when the transfer table is retracted, the upper sheet and the lower sheet are unloaded. It is preferable to provide a control device that reduces the pulling load of the transfer table and prevents the upper sheet and the lower sheet from slackening by accelerating the start of the sheet pull-in relative to the start of the transfer table .

  It is preferable that the transfer mechanism includes a wheel provided at a left and right width end portion of the apparatus main body and a chain meshed with the wheel.

  It is preferable that the transfer mechanism includes a rack gear and a pinion.

  It is preferable that the transfer table is supported by a multi-stage transfer mechanism so that a laterally extending stroke is increased.

According to the patient transport device of the present invention, the transfer table on the device body can be extended to the left and right with a large stroke, so that the patient can be easily transferred on both the left and right sides of the patient transport device. By simplifying the structure of the upper sheet and the lower sheet and reducing the thickness dimension of the transfer table, it is possible to greatly reduce the burden on the patient when scooping and carrying out the patient . Further, when the transfer table is extended to the left side, the left lower winding body is moved to the left together with the upper winding body by the left locking portion, and when the transfer table is extended to the right side, the lower lower winding body is moved to the right side. When the body moves to the right side together with the upper wrapping body by the right locking portion, the lower wrapping body on the opposite side to the overhanging side does not move and is positioned on the apparatus main body, so that the lower seat It is possible to achieve an excellent effect that the problem of twisting or wrinkling can be prevented .

  In addition, if a sheet guide body is provided between the upper and lower winding bodies of the transfer table and is always positioned on the apparatus main body to guide the upper sheet, the change in the length of the upper sheet can be suppressed. it can.

When the transfer table is extended, the unloading load of the transfer table is reduced by accelerating the start of unwinding of the upper sheet and the lower sheet relative to the start of the transfer table, and when the transfer table is retracted, the upper sheet and the lower sheet are unloaded. A control device that reduces the pulling load of the transfer table and prevents the upper sheet and the lower sheet from slackening by accelerating the start of sheet pull-in relative to the start of pulling in the transfer table. Can be reduced.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 to 5 show an example of an embodiment for carrying out the present invention. FIG. 1 is a side view of a patient conveying device, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a view of FIG. FIG. 4 is a plan view showing an example of a transfer mechanism provided in the patient transport device, and FIG. 5 is a front view showing an outline of the patient transport device. The patient transport apparatus 1 includes a device main body 3 that is capable of traveling with a caster 2a, and the device has the endless upper sheet 4 shown in FIG. 5 wound around rollers 5a at both ends on the device main body 3. An upper wrapping body 5 having substantially the same width as the main body 3 and a lower width left and right of the lower wrapping body 5 are disposed on the lower portions of the upper wrapping body 5 and are wound around rollers 8a and 9a at both ends. A transfer table 10 including lower winding bodies 8 and 9 is provided. The transfer table 10 can be extended to the left and right sides with a stroke of substantially the entire width of the apparatus main body 3, and the patient can be transferred between the left and right beds and the like, and can be transported. It can be done. In FIG. 3, the transfer table 10 is omitted. The apparatus main body 3 is provided with, for example, a pantograph type lifting device 2b so that the height of the apparatus main body 3 can be adjusted.

  Between the upper wrapping body 5 and the lower wrapping bodies 8 and 9 in the transfer table 10, the sheet guide body is always located on the apparatus main body 3 and guides the upper sheet 4 by the rollers 11a at both ends. 11 is provided. Further, between the upper winding body 5 and the lower winding body 8, there are provided locking portions 12a and 12b, for example, with claws. When the transfer table 10 projects to the left, the lower winding on the left side is provided. The body 8 is locked to the upper wrapping body 5 by the left locking portion 12a and moves to the left together. At this time, the lower wrapping body 9 on the right side remains on the apparatus main body 3, and the transfer table 10 is moved to the right side. When projecting, the right lower winding body 9 is locked to the upper winding body by the right locking portion 12b and moves to the right together. At this time, the left lower winding body 8 remains on the apparatus main body 3. It is like that.

  The transfer table 10 can be extended and retracted to the left and right of the apparatus main body 3 by a transfer mechanism 13 shown in FIGS. The transfer mechanism 13 integrally fixes the rack gear 14 to the lower part of the front and rear ends of the transfer table 10 over substantially the entire width, and meshes with the rack gear 14 at the left and right end portions of the front and rear ends of the apparatus body 3. Pinions 17 and 18 are provided. In FIG. 4, the four pinions 17 and 18 are simultaneously driven by the single transfer drive motor 19 via the rod 20 and the bevel gear 21.

  FIG. 7 shows another example of the transfer mechanism 13. A rack gear 14 is integrally provided at the lower part of the transfer table 10 with substantially the same left and right width, and the same width as the rack gear 14 is provided in the apparatus body 3. A lower rack gear 22 is provided, and a single pinion 23 is provided which meshes with the rack gear 14 and the lower rack gear 22 and is driven to rotate, and the transfer table 10 is extended and retracted.

  FIG. 8 shows still another example of the transfer mechanism 13. The transfer mechanism 13 is configured such that both ends of a chain 25 meshed with wheels 24, 24 provided at the left and right end portions of the apparatus body 3 are crossed. It has the structure fixed to the fixed point 26 of the right-and-left end part of the base 10, and it is made to extend and retract the said transfer base 10 by driving one wheel 24. FIG.

  As described above, since the weight of the transfer table 10 extended laterally by the transfer mechanism 13 is received by a bed or the like, the transfer mechanism 13 does not need to receive the weight of the transfer table 10.

  As described above, when the transfer table 10 is laterally extended by the transfer mechanism 13, the extension lengths of the upper sheet 4 and the lower sheets 6 and 7 change as shown in FIG. It is necessary to have a configuration that can adjust (absorb) the length.

  Further, when the patient on the bed is scooped onto the transfer table 10, the transfer table 10 is extended on the bed, and at this time, the upper sheet 4 on the upper surface of the upper wound body 5 is placed on the transfer table 10. The patient is scooped onto the transfer table 10 by moving in the retreating direction opposite to the overhanging direction, and at the same time, the lower sheets 6 and 7 on the lower surface of the lower winding bodies 8 and 9. Need to be able to fit under the patient without friction with the bed.

  Further, when the patient scooped up on the transfer table 10 as described above is moved to the apparatus main body 3, the transfer table 10 is retracted. At this time, the upper sheet 4 on the upper surface of the upper winding body 5 is retracted. Needs to move onto the apparatus main body 3 while holding the patient on the transfer table 10 while being stationary with respect to the transfer table 10, and at the same time, the lower sheet 6 on the lower surface of the lower winding bodies 8, 9. , 7 need not cause friction with the bed.

  On the other hand, when the patient placed on the transfer table 10 on the upper part of the apparatus body 3 is carried out onto the bed, the transfer table 10 is extended to a predetermined position. The upper sheet 4 is in a state of being stationary with respect to the transfer table 10 and needs to move on the bed while holding the patient on the transfer table 10, and at the same time, the lower sheet on the lower surface of the lower winding bodies 8 and 9 6 and 7 need not cause friction with the head. Subsequently, when the patient on the transfer table 10 is transferred to the head and transferred, the transfer table 10 is retracted. At this time, the upper sheet 4 on the upper surface of the upper winding body 5 is moved to the transfer table 10. On the other hand, the patient moves in the forward direction opposite to the retracting direction and sends the patient onto the bed. At this time, the lower sheets 6 and 7 on the lower surface of the lower wrapping bodies 8 and 9 do not generate friction with the bed. It is necessary to.

  In order to perform the above operation, as shown in FIGS. 3 and 5, the endless upper sheet 4 wound around the upper wound body 5 is rolled onto the left and right lower wound bodies 8, 9 by rollers 27a, 27b. After being guided to the lower part through the gaps and passing through the rollers 28a, 28b, the paper is wound around the length adjusting device 29. The length adjusting device 29 has a configuration in which adjusting rollers 32a and 32b are attached to a nut 31 screwed to a reverse screw portion 30a and 30b cut in opposite directions to the main shaft 30, and the roller 28a. , 28b, the upper sheet 4 is spread and wound around the adjusting rollers 32a, 32b. When the main shaft 30 is rotationally driven by the adjustment motor 33, the distance between the adjustment rollers 32a and 32b changes so that the length of the upper sheet 4 accompanying the extension of the transfer table 10 can be adjusted (absorbed). Yes.

  At this time, as shown in FIG. 5, the length adjusting device 29 has a configuration in which the upper sheet 4 is wound around the adjusting rollers 32a and 32b capable of adjusting the mutual interval, so that the adjustment rollers 32a and 32b are moved. When the stroke of the transfer table 10 is ST, the stroke can be adjusted (absorbed) by changing the length of the upper sheet 4 associated with the transfer table 10 by just half the stroke ST / 2. ing.

  The lower sheets 6 and 7 wound around the left and right lower wound bodies 8 and 9 are respectively fixed at one end to the width end portion of the apparatus body 3 at a fixing point 34 and the other end is guided. Winding devices 37 and 38 driven by separate motors 36a and 36b via rollers 35 are respectively wound.

  The center position of the upper sheet 4 hung on the adjusting rollers 32a and 32b in the length adjusting device 29 (the center position when the transfer table 10 is on the apparatus main body 3) can be fixed. The first brake 39 (see FIGS. 3 and 5) is provided, and a roller 28a portion is provided on the left side of the upper sheet 4 between the length adjusting device 29 and the transfer table 10. 4 is provided, and the upper sheet 4 is provided on the right side of the upper sheet 4 between the length adjusting device 29 and the transfer table 10 at the roller 28b portion. A third brake 41 that is fixed is provided. In FIG. 1 and FIG. 2, reference numeral 43 denotes a brake motor that operates the brakes 39, 40, 41.

  Also, a transfer drive motor 19 for extending the transfer table 10, an adjustment motor 33 for the length adjusting device 29, motors 36a and 36b for driving the winding devices 37 and 38 for the lower sheets 6 and 7, The operation of the brake motor 43 is controlled by the control device 42, respectively. For example, when the transfer table 10 is extended to the left side, the control device 42 loosens the upper sheet 4 by narrowing the interval between the adjustment rollers 32 a and 32 b with the adjustment motor 33 before driving the transfer drive motor 19. In addition, the take-up devices 37 and 38 are driven by the motors 36a and 36b so as to perform the operation of unwinding the lower sheets 6 and 7, so that the transfer table 10 overhangs the transfer drive motor 19 The load is reduced. Further, when the transfer table 10 is retracted, before the transfer drive motor 19 is driven, the upper sheet 4 is taken in by the extension of the length adjusting device 29 by driving the adjustment motor 33, and the motors 36a and 36b are driven. By starting the winding of the lower sheets 6 and 7 by driving, the pulling load of the transfer table 10 applied to the transfer drive motor 19 is reduced, and at the same time, the upper sheet 4 and the lower sheets 6 and 7 are prevented from loosening. ing.

  FIG. 9 shows the operation when the transfer table 10 is extended to the left side to scoop up the patient (transfer object) on the bed and the movement of the upper sheet 4 and the lower sheets 6, 7. At the time of scooping, the third brake 41 is operated to fix the upper seat 4 at this position. At this time, the other first and second brakes 39 and 40 are kept open. In FIG. 9, V is the overhanging speed at which the transfer table 10 is extended, and the other numbers (0) indicate the speed with respect to the outside (the state of being stationary with respect to the outside).

  When the transfer driving motor 19 (FIG. 4) is driven and the transfer table 10 is extended at a speed V as shown in FIG. 9, the adjusting rollers 32a and 32b are driven at a speed of V / 2 by driving the adjusting motor 33. The upper sheet 4 is fed out from the roller 28a at a speed of 2V by approaching each other (the speed of the roller 28b is 0). Further, the lower sheet 6 is fed out from the winding device 37 at a speed of 2V by driving the left motor 36a.

  As described above, while the transfer table 10 is extended at a speed of V, the upper sheet 4 has a speed of 0 with respect to the outside, that is, with respect to the upper surface of the upper wound body 5. Since it moves at the same speed V as the overhanging speed V of the table 10 and in the reverse direction opposite to the overhanging direction (2V−V = V), the transfer table 10 enters under the patient on the bed and transfers the patient. Crawling on the table 10. At this time, the lower sheet 6 on the lower surface of the lower winding body 8 moves at a speed V (speed 0 toward the outside) in the reverse direction opposite to the overhanging direction with respect to the transfer table 10 and is placed on the bed. Thus, there is no friction with the bed, so that the transfer table 10 can easily slip under the patient.

  FIG. 10 shows the action when the patient on the transfer table 10 positioned on the apparatus body 3 is moved to the left bed, and the first brake 39 is operated to move the upper part at this position. The seat 4 is fixed, and at this time, the other second and third brakes 40 and 41 are opened.

  In this state, when the transfer drive motor 19 (see FIG. 4) is driven to extend the transfer table 10 at a speed V as shown in FIG. 10, the adjustment rollers 32a and 32b are brought closer to each other at a speed of V / 2. The lower sheet 6 is fed out at a speed of 2V, whereas the upper sheet 4 is fed out from the extended side (left side) and the counter extended side (right side) of the length adjusting device 29 at the same V speed. As a result, the transfer table 10 is extended at a speed of V, whereas the upper sheet 4 on the upper surface of the upper wound body 5 is also fed out in the same direction at the same speed V, and therefore the transfer table is transferred. The patient on the table 10 is moved up to the bed while being placed on the transfer table 10 without moving with respect to the upper surface of the upper wound body 5. At this time, the lower sheet 6 on the lower surface of the lower winding body 8 is drawn out so as to be placed on the transfer table 10, so that the transfer table 10 does not generate friction with the bed.

  As shown in FIG. 9, when the transfer table 10 that has picked up the patient is moved onto the apparatus main body 3 as indicated by a broken line, the first brake 39 is operated in the same manner as in FIG. Then, the upper seat 4 is fixed, and at this time, the other second and third brakes 40 and 41 are kept open. When the transfer table 10 is retracted by reversing the drive of the transfer drive motor 19 and the adjusting rollers 32a and 32b are separated from each other at a speed of V / 2, the patient on the transfer table 10 is placed on the upper wrapping body 5. It is moved onto the apparatus main body 3 while being held on the transfer table 10 without moving relative to the upper surface. At this time, the lower sheet 6 on the lower surface of the lower winding body 8 is only wound by the winding device 37 driven by the motor 36a, and the transfer table 10 does not generate friction with the bed.

  As shown in FIG. 10, when the patient on the transfer table 10 overhanging on the bed is transferred onto the bed as shown by the broken line, the third brake 41 is operated to move to this position. Then, the upper seat 4 is fixed and the other brakes 39 and 40 are opened. When the driving of the transfer drive motor 19 is reversed to retract the transfer table 10 and the adjustment rollers 32a and 32b are separated from each other at a speed of V / 2, the upper sheet 4 on the upper surface of the upper wound body 5 is exposed to the outside. On the other hand, the upper sheet 4 on the left side, which is fixed to the lower side from the front end of the upper winding body 5, is taken in at a speed of 2 V. Will be withdrawn. At this time, since the lower sheet 6 on the lower surface of the lower winding body 8 is only wound around the winding device 37 via the roller 8a, the transfer table 10 does not generate friction with the bed.

  Further, when the transfer table 10 is extended to the right side of the apparatus main body 3, the brake 41 is operated instead of the operation of the brake 40, and the lower seat 7 is operated with respect to the lower seat 6. Can be operated in the same way by an operation symmetrical to the case of projecting to the left.

  FIG. 11 shows an example of a transfer mechanism 13 ′ that further increases the overhanging stroke of the transfer table 10. One pinion 23 is provided between the rack gear 14 and the lower rack gear 22 shown in FIG. The transfer table 10 can be extended in two stages by a configuration combining the above-described method and the method using the wheel 24 and the chain 25 shown in FIG. According to this configuration, the transfer table 10 can be extended approximately twice the width of the apparatus body 3 with respect to the side of the apparatus body 3. On the other hand, when the extension stroke of the transfer table 10 is increased as described above, it is necessary to increase the adjustment amounts of the lengths of the upper sheet 4 and the lower sheets 6 and 7. For this reason, the amount of adjustment can be increased by increasing the number of turns by the adjusting rollers 32a and 32b of the length adjusting device 29. On the lower rack gear 22 of FIG. 11, intermediate winding bodies 8 ′ and 9 ′ for receiving the upper sheet 4 and the lower sheets 6 and 7 when the transfer table 10 is extended in two stages are provided. Yes.

  Next, the operation of the above embodiment will be described.

  As shown in FIG. 9, when the transfer table 10 is extended to the left side of the apparatus main body 3 to scoop up the patient on the bed, first, the elevating device 2b is driven to set the height of the apparatus main body 3 to the bed. Adjust to match the height. At this time, the height of the transfer table 10 is adjusted to be slightly higher than the bed upper surface. In a state where the transfer table 10 is positioned on the apparatus main body 3, the third brake 41 is operated to fix the upper seat 4 at this position as shown in FIG. The brakes 39 and 40 are opened.

  Subsequently, the transfer drive motor 19 is driven to extend the transfer table 10 to the left side at a speed of V. At this time, before the transfer drive motor 19 is driven, the adjustment motor 33 is driven to start the adjustment rollers 32a and 32b approaching each other at a speed of V / 2, and the motor 36a is driven to move to the lower part. By starting the operation of feeding out the sheet 6, the upper sheet 4 and the lower sheet 6 are loosened, so that the load for extending the transfer table 10 applied to the transfer drive motor 19 can be reduced.

  While the transfer table 10 is extended at a speed of V, the upper sheet 4 on the upper surface of the upper winding body 5 moves at the same speed in the reverse direction opposite to the extension direction of the transfer table 10 ( With respect to the outside, the speed is 0), and the patient can be scooped under the patient, so that the patient can be scooped onto the transfer table 10. At this time, the lower sheet 6 on the lower surface of the lower winding body 8 is moved at a speed V (speed 0 for the outside) in the retreating direction opposite to the overhanging direction with respect to the transfer table 10, so it is placed. Thus, the transfer table 10 does not generate friction with the bed. FIG. 9 illustrates the case where the transfer table 10 is extended to the left side and the patient on the left bed is scooped. However, when the transfer table 10 is extended to the right side, the patient on the right bed is scooped. Moreover, it can carry out similarly by the symmetrical operation with the above.

  On the other hand, as shown in FIG. 10, when the patient on the transfer table 10 located on the apparatus main body 3 is moved to the bed, the first brake 39 is operated to fix the upper seat 4 at this position. At this time, the other second and third brakes 40 and 41 are kept open.

  In this state, when the transfer drive motor 19 (see FIG. 4) is driven to extend the transfer table 10 at a speed V as shown in FIG. 10, the adjustment rollers 32a and 32b are brought closer to each other at a speed of V / 2. The lower sheet 6 is fed out at a speed of 2V, while the upper sheet 4 is fed out at the same speed of V from the extension side (left side) and the counter extension side (right side) of the length adjusting device 29. Therefore, while the transfer table 10 is extended at a speed of V, the upper sheet 4 on the upper surface of the upper winding body 5 is also fed out at the same speed V in the same direction. The patient on 10 is moved to the top of the bed while being placed on the transfer table 10 without moving with respect to the upper surface of the upper wound body 5. At this time, the lower sheets 6 and 7 on the lower surface of the lower winding body 8 are drawn out so as to be placed on the transfer table 10, so that the transfer table 10 does not generate friction with the bed. .

  Further, when the patient scooped up from the bed onto the transfer table 10 by the operation of FIG. 9 is moved onto the apparatus main body 3 as indicated by the broken line, the first brake 39 is operated as in FIG. The upper seat 4 is fixed at the lever position, and at this time, the other second and third brakes 40 and 41 are opened.

  Then, the transfer drive motor 19 is driven in a direction opposite to that during the extension, and the adjustment rollers 32a and 32b are separated from each other at a speed of V / 2. When the transfer table 10 is retracted, the start of the upper sheet 4 and the lower sheets 6 and 7 is started earlier, thereby reducing the pulling load of the transfer table 10 and loosening of the upper sheet 4 and the lower sheets 6 and 7. Can be prevented.

  According to the above, when the transfer table 10 is retracted at a speed of V, the upper sheet 4 on the upper surface of the upper winding body 5 also moves in the same direction at the speed V. It moves on the apparatus main body 3 in the state still mounted in the same position, without moving with respect to the winding body 5 upper surface. At this time, the lower sheet 6 on the lower surface of the lower winding body 8 is only wound up through the upper portion of the roller 8a, and the transfer table 10 does not generate friction with the bed.

  In addition, when the patient on the transfer table 10 bulged on the bed by the operation of FIG. 10 is transferred onto the bed as indicated by the broken line, the third brake 41 is operated as in FIG. The upper seat 4 is fixed at the position, and the other first and second brakes 40 and 41 are opened at this time.

  In this state, when the driving of the transfer driving motor 19 is reversed to retract the transfer table 10 and the adjustment rollers 32a and 32b are separated from each other at a speed of V / 2, the upper sheet 4 on the upper surface of the upper winding body 5 is recovered. Is fixed to the outside, and the upper sheet 4 on the left side facing downward from the front end of the upper wrapping body 5 is taken in at a speed of 2 V, so that the patient on the transfer table 10 is transferred while being sent out onto the bed. The platform 10 can be retracted. At this time, since the lower sheet 6 on the lower surface of the lower winding body 8 is only wound around the winding device 37 via the roller 8a, the transfer table 10 does not generate friction with the bed.

  According to the patient transport apparatus of the present invention described above, the transfer table 10 on the apparatus main body 3 can be extended to the left and right with a large stroke, so that the patient can be easily transferred on both the left and right sides of the patient transport apparatus 1. It becomes possible.

  Furthermore, by simplifying the configuration of the upper sheet 4 and the lower sheets 6 and 7, the thickness dimension of the transfer table 10 can be reduced. According to the design of the inventors, according to the configuration of the present invention, the thickness of the transfer table 10 can be reduced to 20 mm or less, and the patient is actually transferred by the transfer table 10 having a thickness of 15 mm. It was possible to perform well.

  As described above, since the thickness of the transfer table 10 can be reduced, the transfer table can be easily pulled under the patient at the time of scooping the patient so that the patient is placed on the transfer table 10. Since the patient can be scooped and there is almost no need for the patient to be inclined when scooping and carrying out the patient, the burden on the patient can be greatly reduced.

  Further, since the sheet guide body 11 which is always located on the apparatus main body 3 and guides the upper sheet 4 is provided between the upper winding body 5 and the lower winding bodies 8 and 9 of the transfer table 10, The change in the length of the sheet 4 can be suppressed.

  Further, when the transfer table 10 extends to the left side, the left lower winding body 8 moves to the left side together with the upper winding body 5 by the left locking portion 12a, and when the transfer table 10 extends to the right side. The lower winding body 9 on the right side moves to the right side together with the upper winding body 5 by the right engaging portion 12b, so that the lower winding bodies 8 and 9 on the opposite side to the overhanging side do not move and the apparatus main body. Since it is located on 3, the problem of the lower sheets 6 and 7 being twisted or wrinkled can be prevented.

  Further, when the transfer table 10 is extended, the start of unwinding of the upper sheet 4 and the lower sheets 6 and 7 is accelerated to reduce the load on the transfer table 10, and when the transfer table 10 is retracted, the upper sheet 4 and the lower sheet Since the controller 42 is provided to reduce the pulling load of the transfer table 10 and prevent the upper sheet 4 and the lower sheets 6 and 7 from slacking by accelerating the start of the drawing of the sheets 6 and 7, the driving power of the transfer mechanism 13 is provided. The patient transport apparatus 1 can be stably operated.

  In the above embodiment, the transfer table having the same width as the apparatus main body is illustrated as being able to extend to the left and right of the apparatus main body with substantially the full width. However, there are various methods for extending the transfer table. Needless to say, the present invention can be adopted, can be applied to transporting various objects such as various packages other than the patient, and can be variously modified without departing from the scope of the present invention.

It is a side view showing an example of a patient conveyance device concerning the present invention. It is a top view of FIG. It is sectional drawing which looked at FIG. 1 from the III-III direction. It is a top view of the transfer mechanism with which the patient conveyance apparatus of FIG. 1 was equipped. It is a front view which shows the outline of the patient conveyance apparatus of this invention. It is a front view which shows the outline of a transfer mechanism. It is a front view which shows the outline of the other example of a transfer mechanism. It is a front view which shows the outline of the further another example of a transfer mechanism. It is a front view which shows the effect | action at the time of scooping up a transfer object. It is a front view which shows the effect | action at the time of carrying out and transferring the transfer object. It is a front view which shows the example which increases the overhang | projection stroke of a transfer stand.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Patient conveyance apparatus 3 Apparatus main body 4 Upper sheet | seat 5 Upper winding body 6,7 Lower sheet | seat 8,9 Lower winding body 10 Transfer stand 11 Sheet | seat guide body 12a Left latching | locking part 12b Right latching part 13 Transfer mechanism 14 Rack gears 17, 18 Pinion 22 Lower rack gear 23 Pinion 24 Wheel 25 Chain 29 Length adjusting device 36a, 36b Motor 37, 38 Winding device 39 First brake 40 Second brake 41 Third brake 42 Control device

Claims (6)

A transfer stage having an upper winding body and left and right lower winding bodies provided at the lower part of the upper winding body and capable of extending to the left and right of the apparatus main body by a transfer mechanism;
An endless upper sheet that is wound around the upper winding body and led to the lower part through the space between the left and right lower winding bodies and is adjustable in length by a length adjusting device provided in the apparatus main body;
The first brake capable of fixing the center position of the length of the upper seat in the length adjusting device, and the left side portion and the right side portion of the upper seat between the length adjusting device and the transfer table are independently fixed. Possible second and third brakes;
A left and right lower seat wound around each of the left and right lower wound bodies, one end fixed to the apparatus main body, and the other end wound on the left and right winding devices provided in the apparatus main body,
When the transfer table is extended and retracted, the upper sheet on the upper surface of the upper winding body is stationary with respect to the transfer table, and when the transfer table is extended, the upper sheet on the upper surface of the upper winding body is transferred. It is possible to switch between a state to be taken in on the table and a state in which the upper sheet on the upper surface of the upper winding body is carried out to the outside when the transfer table is extended ,
When the transfer table is extended to the left, the left lower winding body moves to the left together with the upper winding body by the left locking portion, and when the transfer table is extended to the right, the lower lower winding body is A patient transport device, wherein the patient transporting device moves to the right side together with the upper winding body by a right engaging portion .   The patient conveyance according to claim 1, further comprising a sheet guide body that is always positioned on the apparatus main body and guides the upper sheet between the upper and lower winding bodies of the transfer table. apparatus. When the transfer table is extended, the unloading load of the transfer table is reduced by accelerating the start of unwinding of the upper sheet and the lower sheet relative to the start of the transfer table, and when the transfer table is retracted, the upper sheet and the lower sheet are unloaded. 2. The control device according to claim 1, further comprising: a control device that reduces the pulling load of the transfer table and prevents the upper sheet and the lower sheet from slackening by accelerating the start of the sheet pull-in relative to the start of the transfer table. The patient transport device described.   The patient transfer apparatus according to claim 1, wherein the transfer mechanism includes a rack gear and a pinion.   The patient transfer apparatus according to claim 1, wherein the transfer mechanism includes a wheel provided at a left and right end of the apparatus main body and a chain meshed with the wheel.   The patient transfer apparatus according to claim 1, wherein the transfer table is supported by a multi-stage transfer mechanism so that a laterally extending stroke is increased.

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