ES2863458T3 - Patient transport device - Google Patents

Abstract

Patient transport device with - a lower frame (12) with a lower frame (16) provided with castors and / or castors, an upper frame (20) and a lifting device (22), - where the lifting device (22) is arranged between the lower frame (16) and the upper frame (20) and is intended to change their mutual distance between a lower lifting position and a maximum lifting position, - where the lifting device (22) has two operatively connected lifting scissor units (24, 26) which are arranged one above the other and of which the lower lifting scissor unit is coupled to the lower frame (16) and the upper lifting scissor unit is coupled to the upper frame (20) of the lower frame (12), - where each lifting scissor unit (24, 26) has two pairs (34), each of which comprises a first (36) and a second strut ( 38), which intersect and are connected d e pivotally relative to each other, and both pairs are arranged laterally offset at a common level and aligned parallel to each other, - where a first end (42) of each first strut (36) of the lower lift scissor unit (24) is rotatably connected to the lower frame (16) and a first end (46) of each second strut (38) of the lower lift scissor unit (24) is pivotally guided with the lower frame (16) and slidable on the lower frame (16), - where a first end (42) of each first strut (36) of the upper lift scissor unit (26) is rotatably connected to the upper frame (20) and a first end ( 46) of each second strut (38) of the upper lifting scissor unit (26) is pivotally guided with the upper frame (20) and slidable on the upper frame (20), - where the second ends (54, 56) of these struts (36, 38) of both lift scissor units (24, 26) opposite the first ends (42, 46) of the aforementioned struts (36, 38) are directly articulated to each other or by means of at least the first and second struts of a further central lifting scissor unit and therefore therefore, indirectly articulated and - a lying surface (14) on the upper frame (20), which has one end on the side of the head part (76) and one end on the side of the feet part ( 78), which is connected to the upper frame (20) or can be removably connected to the upper frame (20), characterized in that - the lower frame (16) of the lower frame (12) has two longitudinal frame sections (84, 85) and two transverse frame sections (88, 89) running transversely thereto, where the first frame cross section (88) faces the head-side end (76) of the lying surface (14) and the cross section of the second bast idor (89) to the foot side end (78) of the lying surface (14), - the two longitudinal frame sections (84, 85) of the lower frame (16) each protrude beyond its second section transverse frame (89), where in these projecting sections (92) of the longitudinal frame sections (84, 85) wheels and / or rotating wheels (18) are arranged on each one, and - the leg part / of the feet (82) of the lying surface (14) at its foot-side end (78) in the folded state toward the lower frame (16) of the lower frame (12) is submersible in the free space (93 ) between the two protruding sections (92).

Description

DESCRIPTION

Patient transport device

The present invention relates to a patient transport device which is used in particular for applications outside a hospital or clinic. Known patient transport devices are generally height adjustable and therefore have a height adjustable bottom frame in addition to the lying surface, which is normally provided with castors and / or castors. A simple way to make a height adjustable subframe is related to the use of scissor lifting devices. Simple scissor linkages are used, featuring two pairs of intersecting struts. These two pairs of crossing struts are located side by side, where one end of the four struts is connected to a lower part of the frame and the other ends of the four struts to an upper part of the frame or to a surface. to lie down or to the frame to be of a surface to lie down. The connection to the aforementioned elements is selected in such a way that two struts are articulated at one end and at their other ends are rotatable and movable. In documents W ^or -A-2006/036980 and US-A-2002/0056162 examples of simple scissors linkages are described. From DE4317149 a patient transport device with double scissor linkage is known.

Document WO-A-02/39944 describes an ambulance transport device with a chassis and a stretcher, where the stretcher can be converted into a wheelchair when removed from the chassis. For this, the patient stretcher has, among other things, folding legs with wheels. With the known patient transport device, the wheelchair function can only be assumed without a chassis.

In order to achieve a sufficient lifting height with such simple scissor lifting devices, the lower frames will have to be made relatively long. However, a lower frame with a relatively large longitudinal extension makes maneuvering in tight spaces impossible or difficult.

The object of the invention is to create an improved height adjustable stretcher in this regard. As a solution to this object, the invention proposes a height-adjustable and, in particular, also mobile patient transport device, which provides

- a lower frame with a lower frame provided with castors and / or castors, an upper frame and a lifting device,

- where the lifting device is arranged between the lower frame and the upper frame and is intended to change their mutual distance between a lower lifting position and a maximum lifting position, - where the lifting device has two scissor units of operatively connected lift which are arranged one above the other and of which the lower lift scissor unit is coupled to the lower frame and the upper lift scissor unit is coupled to the upper frame of the lower frame,

- where each lifting scissor unit has two pairs (pairs of scissor arms), each of which comprises a first and a second strut (i.e. scissor arm), which intersect and are pivotally connected between yes, and both pairs are arranged laterally offset at a common level and aligned parallel to each other,

- where a first end of each first strut of the lower lift scissor unit is rotatably connected to the lower frame and a first end of each second strut of the lower lift scissor unit is pivotally and slidably guided on the lower frame,

- where a first end of each first strut of the upper lift scissor unit is rotatably connected to the upper frame and a first end of each second strut of the upper lift scissor unit is pivotally and slidably guided on the upper frame,

- where the second ends of these struts of both lifting scissor units opposite the first ends of the aforementioned struts are directly articulated to each other or by means of at least the first and the second strut of a central lifting scissor unit additional and therefore indirectly articulated and

- a surface for lying on the upper frame, having one end on the side of the head part and one end on the side of the foot part, which is connected to the upper frame or can be detachably connected to the upper frame,

- where the lower frame (16) of the lower frame (12) has two longitudinal frame sections (84, 85) and two transverse frame sections (88, 89) running transversely thereto, where the first frame cross section ( 88) faces the head-side end (76) of the lying surface (14) and the second frame cross-section (89) faces the foot-side end (78) of the lying surface - where the two longitudinal frame sections (84, 85) of the lower frame (16) each protrude beyond its second frame cross section (89), where in these protruding sections (92) of the longitudinal frame sections ( 84, 85), wheels and / or rotating wheels (18) are arranged on each, and

- where the leg / feet portion (82) of the lying surface (14) at its foot-side end (78) in the folded state towards the lower frame (16) of the lower frame (12) It is submersible in the free space (93) between the two projecting sections (92).

According to the invention, a double or generally multiple lifting scissors is provided as the lifting device, which consists of at least two single scissor lifting units arranged one above the other. This enables the required lifting heights to be achieved in the patient transport sector with shorter lower frames. The lying surface now protrudes with its back part and its leg / feet part over the ends of the surface which are in the longitudinal extension of the lower frame. It is useful in this regard that the lower frame or a frame of the lying surface has extendable extension elements with handle ends at its upper end, so that the lower frame has longitudinal rails at its upper end, like a stretcher, that extend across the entire surface to lie down and, if necessary, around the handle beyond the surface to lie down. However, it is also possible to shorten the upper area of the lower frame and increase the frame length of the lying surface.

Each lifting scissor unit of the lifting device of the patient transport device according to the invention has two pairs (scissor arms) each comprising a first and a second strut (scissor arm). These two struts (scissor arms) intersect and are pivotally connected to each other. Both the strut and the pair of scissors are arranged laterally offset from each other and are, as it were, at a common level and are also arranged parallel to each other. According to the invention, at least one second lifting scissor unit is connected to said lifting scissor unit, where the respective pairs of struts, which are arranged one above the other, are hingedly connected at the ends of their struts one in front of the other. The lower lift scissor unit is now connected to the bottom of the lower frame, which is designed as a lower frame. The upper lifting scissor unit is connected to the upper part of the lower frame, which is designed as an upper frame. A third lifting scissor unit can be placed between the two lifting scissor units. Alternatively, however, as described above, the two lifting scissor units can also be connected directly to each other in a hinged manner through the ends of their intersecting struts facing each other.

The upper frame can be inclined towards the lifting device or the lifting device can be inclined towards the lower frame or the lifting device can be designed to be inclined; In all three cases, the lying surface can be tilted.

An essential feature of the invention is to be able to make the lower frame compactly, in view of the fact that the lowest possible height is maintained, that is, the lowest possible position of the lower bottom (so that it is hardly necessary to lift a patient lying on the floor to be able to bring him to the surface to lie down) and, at the same time, allows the highest possible position of the patient transport device.

According to the invention, the lower frame of the lower frame has two longitudinal frame sections and two frame cross sections, where the first frame cross section faces the head side end of the lying surface and the second cross section of rack to the end of the foot side of the surface to lie down.

To give the patient transport device according to the invention improved balance and stability, the lower frame of the lower frame is designed to be longer on the foot side than the upper frame, where the invention provides that the two longitudinal sections frame of the lower frame each protrude beyond its second frame cross-section, where in each of these protruding sections of the longitudinal frame sections wheels and / or castors are arranged, and that the leg / leg portion the feet of the lying surface can be dipped into the free space between the two projecting sections at its foot-side end in the folded state toward the lower frame of the lower frame.

In a further development of the invention, the lifting device can be operated automatically by means of a transmission. It is useful if the transmission features a motor with an actuator that one motor can move and the transmission is mechanically coupled between two adjacent lift scissor units and thus acts on these two lift scissor units to change the height of the lift. lifting device.

In the patient transport device according to the invention it can also advantageously be provided that the first ends of the first struts are coupled to each other and the first ends of the second struts are coupled to each other per unit of lifting scissors and that per unit of lifting scissors, the second ends of the first struts and / or the second ends of the second struts are respectively not mechanically coupled to each other.

The lying surface of the patient transport device according to the invention, which has a head-side end, which is generally formed by a backrest, and a foot-side end, which is generally formed by a part of the feet, it can be designed differently. As a general rule, the lying surface has a clamping frame or some other clamping structure and is preferably removably fixed on and on the upper frame of the lower frame. As already mentioned above, the upper frame or the lying surface support structure can be adjusted in length. Typically, and advantageously in the case of the invention, the lying surface comprises a central portion with a first end facing the head-side end of the lying surface and a second end facing the foot-side end of the foot. lying surface, a backrest portion articulated with the first end of the central portion, which can pivot about a first pivot axis running transversely to the longitudinal extent of the lying surface defined by the head-side end and the foot-side end of the lying surface, and a leg / foot portion that can pivot with respect to the center portion about a second pivot axis parallel to the first pivot axis, where the second axis The pivot point seen in the longitudinal extension of the lying surface is arranged outside the upper frame of the lower frame. A reclining surface divided in this way with the above-described position of the second pivot axis relative to the upper frame allows the leg / feet portion to fold 90 °, so that when the backrest is folded, a seat that resembles a chair. In this way, the lying surface can be redesigned as a chair surface without the longitudinal extension of the upper frame or, if present, the longitudinal extension of the frame or the supporting structure of the lying surface that extends into the area of the legs. feet beyond the leg / foot part. The wheelchair designed in this way can now be comfortably moved to a suitable height and lowered sufficiently. In particular, the lower frame, which is shortened due to the lifting device according to the invention, is also not harmful. On the foot side, there are no "edges to trip over" or similar constructions of the lower frame. The possibility of using the patient transport device according to the invention is extended due to the possibility of changing the patient transport device between lying transport and seated transport. In particular, in its function as a wheelchair, the patient transport device can be used in confined spaces, such as, for example, in sharp curves in stairs or corridors and, in particular, also in elevators.

In another form of convenient configuration of the invention, provision can be made for the upper frame to have two longitudinal frame sections and two frame cross-sections running transversely to it, where the first frame cross-section faces the end of the side of the frame. head of the lying surface and the second frame cross section is facing the foot side end of the lying surface, and that the second pivot axis when the lying surface is viewed from above, is located on the side of the second frame cross section away from the first frame cross section of the upper frame.

In another advantageous embodiment of the invention, the central part of the lying surface may have a seat part and a leg part that can pivot relative to the seat part about a third pivot axis parallel to the first and second pivot axis and with which the leg / foot portion is pivotally connected about the second pivot axis.

In order to use the smallest possible longitudinal extension of the lower frame as efficiently as possible and at the same time have a sufficiently large lifting height, a further development of the invention which is advantageous in this regard provides that the first ends of the first struts of the lower lift scissor unit, which are rotatably connected to the lower frame of the lower frame, near or at the a frame cross section of the lower frame and the first ends of the second struts of the lower lift scissor unit they are pivotally arranged with the lower frame and slidably guided on the lower frame at the lowest lifting position of the lifting device near or in the other frame cross-section of the lower frame. Consequently, the first ends of the first struts of the upper lifting scissor unit, which are rotatably connected to the upper frame of the lower frame, near or at a frame cross-section of the upper frame and the first ends of the upper frame second struts of the upper lifting scissor unit are pivotally arranged with the upper frame and slidably guided on the upper frame in the lower lifting position of the lifting device near or on the other frame cross section of the frame higher.

In the frame or the holding structure of the advantageous configuration of the invention, it can be provided that the lying surface has two lateral profiles arranged on both sides of the lying surface with extendable removable sections with handles to manually transport the lying surface and / or to manually move the frame with the lying surface. As already described above, instead of an elongation of the longitudinal extension of the upper frame, the frame or the support structure of the lying surface can also have this characteristic. Finally, it is also possible to make both the upper frame and the frame or a corresponding clamping structure of the lying surface to be of variable length.

In the three cases mentioned, it can also be advantageously applied that the removable sections are guided in the profiles of the surface to lie down and can be extracted from them by their ends opposite each other respectively and inserted into the profiles through these ends.

The invention is described below with reference to the drawing based on various embodiments, in which they show:

Figures 1 to 35 different embodiments of the patient transport device according to the invention, Figure 35 a perspective representation of an embodiment of the patient transport device with a double lifting scissor unit and a lying surface subdivided into individual zones and which can be converted into a chair or chair surface, where in figure 1 the lying surface is set as a stretcher,

FIG. 36 shows the patient transport device according to FIG. 35, in which the lying surface is set up as a stretcher, but transformed into a wheelchair, and

FIG. 37 the wheelchair according to FIG. 36 in side view.

Figures 35 to 37 show a patient transport device 10 according to a first configuration example. The patient transport device 10 comprises a height adjustable lower frame 12 and a lying surface 14 which is disposed above the lower frame 12 and, if necessary, can be removed therefrom. The lower frame 12 has a lower frame 16 with wheels and / or four rotating wheels 18. The lower frame 12 further comprises an upper frame 20. A lifting device 22 is located between the two frames, which has two individual scissor units arranged one above the other, namely a lower lifting scissor unit 24 and an upper lifting scissor unit 26. The lower lifting scissor unit 24 is coupled to the lower frame 16 on the one hand rotatably and on the other side pivotally and longitudinally movable, while the upper lift scissor unit 26 is mechanically coupled to the upper frame 20 in the same way. Both lifting scissor units 24, 26 are articulated to each other at their opposite ends. The two lifting scissor units 24, 26 can be adjusted in height by means of a transmission 28, which has a motor 30 and an actuator 32.

As can be seen, for example, with reference to Figure 35, each lifting scissor unit 24 or 26 has two pairs 34 (scissor arm) of struts 36, 38 (scissor arms) first and second that intersect each other. . The struts are pivotally connected to each other at 40. The first end 42 of the first strut 36 is rotatably connected to the lower frame 16 at 44, while the first end 46 of each second strut 38 is longitudinally displaceably guided on frame 16 (see at 48). Similarly, the first ends of the first struts 36 of the upper lift scissor unit 26 are rotatably connected to the upper frame 20 (see at 50), while the first ends 46 of the second struts 38 are guided in a similar manner. pivotally and longitudinally on top frame 20 as shown at 52.

At the second ends 54, 56 of the first and second struts 36, 38 remote from the first ends 42, the second ends 58, 60 of the second struts 38, the two lifting scissor units 24, 26 are connected to each other in articulated way.

The lying surface 14 has a central portion 62 comprising a stationary seat portion 64 and a thigh portion 66 hingedly attached thereto. Towards the head side end 68 of the lying surface 14, the central portion 62 has a first end 70 that is pivotally connected to a back portion 74 of the lying surface 14 through a first axis of pivoting 72. The central portion 62 also has a second end 76 facing the foot side end 78 of the lying surface 14 and which is hingedly connected to a leg / foot portion 82 of the surface for lay down 14 via a second pivot axis 80. A third pivot axis 83 is located between the thigh portion 66 and the stationary seat portion 64.

Figures 36 and 37 show how the lying surface 14 can be converted to a chair surface. In particular, it can be seen that the leg / feet part 82 is immersed in a cavity, that is, in a free space in the lower frame 16, when, in the function of a wheelchair, the lower frame 12 is lowered so that the foot side end 78 of the leg / foot portion 82 is close to the ground on which the lower frame 12 moves.

Both frames 16, 20 each have two longitudinal frame sections 84, 85 (on the lower frame 16) and 86, 87 (on the upper frame 20) and two frame cross sections 88, 89 and 90, 91, respectively. While the upper frame 20 is essentially rectangular, the lower frame 16 has a protrusion in its foot-side frame cross-section 89, which is created by the protruding sections 92 of the longitudinal frame sections 84, 85. In others In other words, the longitudinal frame sections 84, 85 protrude outward beyond the frame cross section 89 on the foot side by the projecting protruding sections 92. This creates a clearance 93 in which the leg part / of the feet 82 protrudes with the foot side end 78 of the lying surface 14 when the lying surface 14 becomes a chair surface and the lower frame 12 is then in its lowest possible position, as shown in the figures. 36 and 37.

Finally, the removable sections 96 should be briefly referred to with the handles 98 of the support frame 98 for the lying surface 14, as shown in Figure 35. These removable sections 96 can be tucked into the longitudinal frame sections 99 (profiles ) of the clamping frame 98 and removed from them. Figures 1 to 34 show different embodiments of the patient transport device according to the invention. For example, Figures 1 to 10 show a first variant of the stretcher according to the invention, in which the lying surface can be adjusted independently of the shortening of the frame of the lying surface. In Figures 11 to 18 a second variant of the patient transport device according to the invention is shown, in which the lying surface changes automatically when the frame length of the lying surface is changed.

Figures 19 to 26 show another embodiment of a stretcher according to the invention, in which the lying surface can be adjusted independently of the length of its structure and the connection between the leg part and the thigh part. of the lying surface can be optionally locked.

A further embodiment of the invention is shown in Figures 27 to 34 in which the lying surface adjusts when the length of its frame changes.

List of references

10 Patient transport device

12 Lower frame

14 Lying surface

16 Frame

18 Casters or casters

20 Upper frame

22 Lifting device

24 Lower Lift Scissor Unit

26 Top Lift Scissor Unit

28 Transmission

30 Engine

32 Actuator

34 Pair (of scissor arms)

36 First prop

38 Second prop

42 First end of a first prop

46 First end of a second prop

54 Second end of a first prop

Second extreme

Second extreme

Second extreme

Central part

Seat part

Thigh part

Head side end of lying surface First end of center part

First pivot axis

Backup part

Second end of the central part

Foot side end of lying surface Second pivot axis

Leg / foot part

Third pivot axis

Lower frame frame longitudinal section

Lower frame frame longitudinal section

Longitudinal section of upper frame frame

Longitudinal section of upper frame frame

First frame cross section of lower frame Second frame cross section

First frame cross section

Second frame cross section

Outstanding section

Free space

Extendable removable sections

Handles

Support frame for lying surface

Frame longitudinal sections, clamping frame profiles

Claims (12)

1. Patient transport device with - a lower frame (12) with a lower frame (16) provided with wheels and / or swivel wheels, an upper frame (20) and a lifting device (22), - where the lifting device (22) is arranged between the lower frame (16) and the upper frame (20) and is intended to change their mutual distance between a lower lifting position and a maximum lifting position, - where the lifting device (22) has two operatively connected lifting scissor units (24, 26) which are arranged one above the other and of which the lower lifting scissor unit is coupled to the lower frame (16) and the upper lifting scissor unit is coupled to the upper frame (20) of the lower frame (12), - where each lifting scissor unit (24, 26) has two pairs (34), each of which comprises a first (36) and a second strut (38), which intersect and are pivotally connected to each other , and both pairs are arranged laterally offset at a common level and aligned parallel to each other, - where a first end (42) of each first strut (36) of the lower lift scissor unit (24) is rotatably connected to the lower frame (16) and a first end (46) of each second strut (38 ) of the lower lift scissor unit (24) is pivotally guided with the lower frame (16) and slidable on the lower frame (16), - where a first end (42) of each first strut (36) of the upper lift scissor unit (26) is rotatably connected to the upper frame (20) and a first end (46) of each second strut (38 ) of the upper lift scissor unit (26) is pivotally guided with the upper frame (20) and slidable on the upper frame (20), - where the second ends (54, 56) of these struts (36, 38) of both lifting scissor units (24, 26) opposite the first ends (42, 46) of the struts (36, 38) mentioned above are directly articulated to each other or by means of at least the first and second struts of an additional central lifting scissor unit and therefore indirectly articulated and - a lying surface (14) on the upper frame (20), which has an end on the side of the head part (76) and an end on the side of the foot part (78), which is connected to the upper frame (20) or can be detachably connected to the upper frame (20), characterized because - the lower frame (16) of the lower frame (12) has two longitudinal frame sections (84, 85) and two transverse frame sections (88, 89) running transversely to it, where the first frame cross section (88 ) faces the head-side end (76) of the lying surface (14) and the second frame cross-section (89) faces the foot-side end (78) of the lying surface (14), - the two longitudinal frame sections (84, 85) of the lower frame (16) each protrude beyond its second frame cross section (89), where in these protruding sections (92) of the longitudinal frame sections (84 , 85) wheels and / or swivel wheels (18) are arranged on each, and - the leg / feet portion (82) of the lying surface (14) at its foot-side end ( 78) in the folded state towards the lower frame (16) of the lower frame (12) is submersible in the free space (93) between the two projecting sections (92). Patient transport device according to claim 1, characterized in that the leg / foot portion (82) of the lying surface (14) at its foot-side end (78) in the folded-down state the lower frame (16) of the lower frame (12), can be positioned on the side of the second frame cross section (89) away from the first frame cross section of the lower frame (16) and, in particular, can be positioned adjacent to her. Patient transport device according to claim 2, characterized in that the lifting device (22) can be automatically actuated by means of a transmission (28). Patient transport device according to claim 3, characterized in that the transmission (28) has a motor (30) with an actuator (32) that can be moved by a motor (30) and that the transmission (28) is mechanically coupled between two adjacent lifting scissor units (24, 26) and thus acts on these two lifting scissor units (24, 26) to change the height of the lifting device (22). Patient transport device according to one of claims 1 to 4, characterized in that the first ends (42) of the first struts (36) are coupled to each other and the first ends (46) of the second struts (36, 38 ) are coupled to each other by lifting scissor unit (24, 26) and because by lifting scissor unit (24, 26), the second ends (54) of the first struts (36) and / or the second ends ( 56) of the second struts (38) are respectively not mechanically coupled to each other. Patient transport device according to one of claims 1 to 5, characterized in that the lying surface (14) comprises a central part (62) with a first end facing the head-side end (76) of the surface to lie down 14) and a second end facing the foot side end (78) of the lying surface (14), a back part (74) articulated with the first end of the central part (62), which can pivot about a first pivot axis (72) running transversely to the longitudinal extent of the lying surface (14) defined by the head-side end (76) and the foot-side end (78) of the lying surface (14), and a leg / foot portion (82) pivotable with respect to the central portion (62) about a second pivot axis (80) parallel to the first pivot axis ( 72), where the second pivot axis (80) seen in the extension The longitudinal lying surface (14) is arranged outside the upper frame (20). Patient transport device according to claim 6, characterized in that the upper frame (20) has two longitudinal frame sections (86, 87) and two transverse frame sections (90, 91) running transversely to it, where the first frame cross section (90) faces the head side end (76) of the lying surface (14) and the second frame cross section (91) faces the foot side end (78) of the lying surface (14), and because the second pivot axis (80) when the lying surface (14) is viewed from above, is located on the side of the second frame cross section (91) away from the first frame cross section (90) of the upper frame (20). Patient transport device according to claim 6 or 7, characterized in that the central part (62) of the lying surface (14) has a seat part (64) and a thigh part (66) that can pivot with relative to the seat portion (64) about a third pivot axis (83) parallel to the first and second pivot axes (72, 80) and with which the leg / feet portion (82) is connected pivotally about the second pivot axis (80). Patient transport device according to one of claims 1 to 8, characterized in that the first ends (42) of the first struts (36) of the lower lifting scissor unit (24), which are rotatably connected to the lower frame (16) of the lower frame (12), near or at a frame cross section (88, 89) of the lower frame (16) and the first ends (46) of the second struts (38) of the Lower lifting scissors (24) are pivotally arranged with the lower frame (16) and slidably guided on the lower frame (16) in the lower lifting position of the lifting device (22) close to or on the other frame (89) cross section of the lower frame (16). Patient transport device according to claim 9, characterized in that the first ends (42) of the first struts (36) of the upper lifting scissor unit (26), which are rotatably connected to the upper frame (20 ) of the lower frame (12), near or in the cross section of the upper frame (20) and the first ends (46) of the second struts (38) of the upper lifting scissor unit (26) are arranged so pivoting with the upper frame (20) and slidably guided on the upper frame (20) at the lowest lifting position of the lifting device (22) near or in the other frame cross-section of the upper frame (20). Patient transport device according to one of Claims 1 to 10, characterized in that the lying surface (14) has a holding frame (97) with two side profiles (99) arranged on both sides of the lying surface ( 14) with extendable removable sections (96) with handles (97) to manually transport the lying surface (14) and / or to manually operate the lower frame (12) with the lying surface (14). Patient transport device according to claim 11, characterized in that the removable sections (96) are guided in the profiles (99) of the holding frame (98) of the lying surface (14) and can be removed from these by means of their ends facing each other and can be inserted into the profiles (99) by means of these ends.