EP1641419A1

EP1641419A1 - Rotating, sitting-up bed comprising a thigh-raising device

Info

Publication number: EP1641419A1
Application number: EP04740118A
Authority: EP
Inventors: Hans-Peter Barthelt
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-07
Filing date: 2004-06-21
Publication date: 2006-04-05
Anticipated expiration: 2024-06-21
Also published as: WO2005002486A1; EP1641419B1; ATE498384T1; DE10330759A1; AU2004253255B2; US7520005B2; DE10330759B4; CN1816314A; DK1641419T3; CN100566691C; US20060236458A1; PL1641419T3; AU2004253255A1; DE502004012199D1

Abstract

A rotating and sitting-up bed includes a height-adjustable base and a support frame, which is connected to the base by means of a rotating articulated element. The support frame can be rotated by 90 degrees relative to the vertical axis with the help of the rotating articulated element. The support frame is divided into a back section, a center section, a thigh section, and a lower-leg section. In the rotated position, the support frame can fold into a Z shape, wherein the back part projects upwards starting from the center section and the lower-leg part hangs downwards from the thigh part. In addition, a crank mechanism ensures that the thigh part is raised by a few cm at its front edge, which is adjacent to the back of the knee of the patient.

Description

Revolving and standing up bed with thigh lifting g

From DE 102 00 408 Cl a rotary bed is known, which is adapted to bring a patient lying in bed in a sitting position on the Bekante. For this purpose, the known bed on a height-adjustable pedestal, which carries a rotary hinge on his head. About the rotary hinge of the lying or mattress frame is connected to the base and can be rotated from the normal bed position in which the longitudinal axis of the mattress frame coincides with the longitudinal axis of the bed in a transverse position.

The lying frame is composed of several sections, so that it can be folded in the transversely rotated position to the chair or chair shape Z-shaped. In the chair or chair shape, the reclining frame forms a backrest, a seat and a down-hanging portion which in support of the bed position Lower leg serves. The seat itself is in turn in two parts and comprises a pivotally connected to the central part ^' central part and hinged thereto thigh part, which is inserted between the central part and the lower leg part.

In the sitting position in the known bed, the central part and the thigh section in the sitting position are completely horizontal. The mattress, which has a considerable thickness, is pulled in the chair or chair position over the edge between the thigh part and the lower leg part, which results in a falling "chair edge". This is not disturbing in the known rotary bed, because the seat depth is chosen to be relatively large. A reduction in the seat depth would mean an unsafe sitting experience for the patient, especially if no viscose foam mattresses are used.

Based on this, it is an object of the invention to provide a Aufstehbett in which no uncertain seating feeling arises even with a shortened seat depth for the patient.

This object is achieved with the rotary and Aufstehbett with the features of claim 1.

In the new Aufstehbett is made use of the fact that the thigh part is connected to the central part via a hinge. In the sitting position, the buttocks of the patient is located approximately over the central part while the thighs rest on the thigh part up to the popliteal fossa. Furthermore, funds are available seen to lift the thigh part in the chair or chair position near the popliteal fossa to some extent. As a result, the central part together with the thigh part forms a shallow depression. This trough position is also maintained even when mattress material is used, which is not suitable per se, a corresponding trough. And thus to create a corresponding seating feeling.

The resulting shallow recessed seat bounded behind the patient by the back allows the distance between the kink where the back part merges with the seat to be shortened to the kink where the seat edge deflects downwards, without causing the patient to feel unsafe. On the other hand, the shortened seating area greatly facilitates the transfer of the patient from the bed to a wheelchair without additional mechanical aids.

Even patients who can still get up when they are seated through the bed benefit from the shortened seat area, which makes getting up easier. Nevertheless, they keep, as already mentioned, a secure seating feeling, as long as they do not want to leave the bed from the sitting position.

The easier to get up comes about because the free edge of the seat is shifted from the hollow of the knee ago towards buttocks. This also means a displacement of the line over which the thigh of the patient bobs when getting up in the upright position. The further this point is shifted to the buttocks, the more it is easier to get up. Conversely, this process is the more difficult to accomplish the farther this site of the popliteal fossa is adjacent.

Without the countermeasure according to the invention, a displacement of this bearing point towards the buttocks means an unsafe sitting sensation, in particular in the case of disabled patients, who are clearly limited with regard to the application of muscular strength.

A very simple and reliable way to pivot the thigh part in the sitting position is to use a cam mechanism. This cam mechanism can be connected in the simplest case with the lever assembly, which serves to pivot the lower leg part and lift.

A very simple solution is to use an intermediate frame in which a shaft is rotatably mounted. The shaft carries on the one hand lever for giving the lower leg part and on the other hand cams for lifting the thigh part.

The stability of the assembly is improved when the thigh member has a cross member which is located at the level of the cam, and at the same time serves as a counter surface for the cams. This allows a very even elevation of the thigh part. In particular, this avoids twisting when the patient sits asymmetrically on the thigh part of the mattress frame.

Incidentally, developments of the invention are the subject of subclaims. In the study of the execution For example, it also becomes clear that a number of modifications are possible.

In the drawing, an embodiment of the object of the invention is shown, show:

1 is a perspective view of the rotary and standing bed according to the invention in the lying position,

FIG. 2 shows the bed according to FIG. 1 in the sitting position, FIG.

3 shows the bed of Figure 1 in an exploded view without panel,

Fig. 4 shows the intermediate frame of the bed according to Fig. 1 in a perspective plan view and

Fig. 5 shows an enlarged section of the intermediate frame in conjunction with a section of the thigh part in a side view.

Figure 1 shows a perspective view of the inventive rotating and Aufstehbett 1 in the lying position, while Figure 2 shows the bed 1 in the seat or chair position.

The bed 1 has a bed border 2 with a head part 3, a foot part 4 and side walls 5 and 6. The viewer facing side wall 5 is located in the reclining position as illustrated at a distance from the ground, so there is a gap between the lower edge of the side wall 5 and the bottom, which allows the nursing staff, put the tufts under the bed. The side wall 5 is movably mounted and arrives in the chair position of the bed 1 in a downwardly shifted position, as shown in FIG. The special mounting of the side wall 5 is detailed in DE 199, for example

12 937 A 1 explained.

Within the Bedumrandung 2 is a bed frame 7, as can be seen in Figures 2 and 3. To the bed frame 7 includes a height-adjustable base 8, on the upper side of a rotary hinge 9 is fixed with a vertical axis of rotation, an intermediate frame 10, and a reclining frame 11, on which a mattress is 12. The reclining frame 11 is rectangular in plan view.

The reclining frame is divided into a central portion 13 which is fixedly connected to the intermediate frame 11, a back portion 14 which at the central portion

13 is hinged, a thigh portion 15, which is also hinged to the central portion 13, and a lower leg portion 16. The lower leg portion 16 is hinged to the distal end of the central portion 13 of the thigh portion 15. The hinge axes about which the sections 14, 15, 16 are movable relative to the central section 13 are horizontal. Finally, the foot frame 12 still has a foot section 17.

The central portion 13 of the reclining frame 12 has two mutually parallel longitudinal beams 18 and 19, which can be seen in Figure 4. Each of these spars 18, 19 terminates at hinge tabs for a hinge. Each spar 18, 19 carries inwardly facing pins 21, are pushed on the rubber molds that absorb spring rods in a known manner. Instead of spring rods can serve as a support and a plate, as is common in hospital beds.

The back portion 14 is bounded by a spar 22 and another parallel spar, which is not visible because of the representation in Figure 3. The further spar is connected to the longitudinal spar 18 while the visible spar 22 is hinged to the spar 19. The two spars 22 of the back portion 14 are connected to each other via a not visible in the figure cross member at the upper end. In addition, on the underside of the two bars 22, a further transverse strut 24 runs.

Also, the thigh section 15 is limited by two longitudinal beams, of which only one longitudinal spar 25 can be seen. The other longitudinal spar is covered by the longitudinal spar 25. The two longitudinal beams 25 are connected by a cross strut 26. The transverse strut 26 extends in the vicinity of the foot-side end of the transverse struts 26 on the underside.

Finally, the lower leg portion 16 is bounded by two longitudinal beams, of which in turn only the longitudinal beam 27 can be seen in the figure. The two longitudinal beams 27 are connected to each other at the lower end via a transverse strut. In addition to this strut, the two longitudinal beams 27 are connected by a strut 29, are attached to the two mutually parallel guide rails 31, which extend to the fußseitgen end. They run as shown at an angle to the longitudinal beam 27, namely so that they converge towards the foot end. The distance between the two guide rails 31 is significantly smaller than the distance between the two longitudinal beams 27. Opposite these, the guide rails 31 are offset approximately 20 cm inwards.

The foot section 17 consists of bars 32, which are elevated on the base 8 via struts 33.

All longitudinal bars 22, 25, and 27 bear towards the center of the bed pointing pins, according to the pin 21 to this rubber molded parts with the longitudinal bars 22, 25, 27 to connect, between which extend spring rods in a known manner.

Each adjacent spars are connected by hinges 28 with horizontal axes. The axes of mutually corresponding bars on the two sides of the bed 1 are coaxial with each other.

The sections 13, 14, 15, 16 of the support frame 11 correspond to sections on the mattress 12, which are separated there by dash-dotted lines.

The height-adjustable base 8 includes an upper rectangular frame 34 and a rectangular frame 35, which are connected to each other via a total of five toggle lever pairs 36 and 37. The toggle lever pairs 36, 37 are each located on a longitudinal side of the base 8, so that the thus corresponding toggle lever pairs 36, 37 on the other longitudinal side in Figure 3 in the side view are not visible. The toggle lever pair 36, 37 is composed of an upper toggle lever 38 and a lower toggle lever 39. Each toggle lever 38, 39 is pivotally connected via a hinge 41 with a horizontal axis on the relevant bed side with the upper and lower frame 34, 35. All axes of the hinges 41 are parallel to each other. The hinges 41 are with their axes to the axes of the hinges

41 of the unrecognizable knee lever 38, 39 coaxial.

The two toggle lever pairs 36, 37 on each side of the base 8 are each by an associated coupling strut

42 coupled together. Each coupling strut 42 is, as shown, hingedly connected to the knee joint 43 of each toggle lever pair 36, 37. Finally, the two coupling struts 42 are yoke-like connected to each other via an unrecognizable transverse strut. At the cross strut engages a drive motor 44 which is supported on the lower frame 35.

Finally, on each side of the base, its oblique coupling strut 45 connects the upper toggle lever 38 of the toggle lever pair 37 with the lower toggle lever 39 of the toggle lever pair 36.

The kinematics of the base 8 and its dimensioning is explained in detail in DE 198 54 136 AI.

The drive motor 44 is a commercially available spindle motor. With the help of a permanently excited motor, a not recognizable worm gear is driven. The worm wheel is rotatably connected to a screw spindle. A threaded nut runs on the screw spindle on the tension- and compression-proof pipe 46 is mounted, which runs coaxially in a guide tube 47.

By starting the engine with the corresponding direction of rotation, the lifting tube 46 is either withdrawn into the guide tube 47 or advanced out of the guide tube. By advancing the lifting tube 46, the cross member, which connects the coupling struts 41 with each other, moves in the direction of the head of the bed. As a result, the lower toggle lever 39 of each of the toggle lever pairs 36 and 37 erected, since all these are kinematically connected to each other via coupling struts.

Due to the kinematics, it is ensured that the upper frame 34 always remains parallel to the lower frame 35. The vertical movement of the upper frame 34 does not result in any appreciable displacement of the upper frame 34 in the longitudinal direction of the bed 1 within the range of stroke for which the base 8 is constructed. The occurring longitudinal movement is less than 5 mm.

To the hinge hinge 9 includes a ring 48 and a running in the ring 48 fifth wheel 49. The ring 48 which is fixed in the upper frame 34. The fifth wheel 48 comprises two longitudinal bars 51. The two longitudinal bars 51 are parallel to each other. By means of a drive motor 52, the fifth wheel 49 can be rotated by 90 ° back and forth.

The structure of the drive motor 52 is the same as that of the drive motor 44, which is why a recent explanation is unnecessary.

The reaction torque of the drive motor 52 is at Turning the fifth wheel 49 is introduced into an abutment which is provided on the upper frame 34.

The structure of the intermediate frame 10 is shown in FIG 4. It is composed of two longitudinal members 61 and 62, which are connected to each other via a head-side cross member 63. In addition, the two longitudinal bars 61 and 62 at the height of the longitudinal members 18, 19 of the central portion 13 of the reclining frame over 11 a total of four struts 64, 65, 66 and 67 are interconnected. This results in the area of the struts 64 ... 67 a kind of open box section, which is able to absorb without torsion and Aufweitung the distance between the longitudinal members 61 and 62 forces resulting from arms 68, 69, 71 and 72 , When the reclining frame 11 is loaded with a patient.

The arms 68... Are welded on the outer side of the two longitudinal bars 61 and 62 as shown projecting outward, so that the two arms 68, 71 are aligned with each other as well as the two arms 69 and 72. The longitudinal axes of these pairs of arms 68. ..72 are parallel to each other.

Their length is about 20 cm and they carry on the free cantilevered ends with the interposition of a spacer 73 rigidly and immovably placed the spars 18 and 19. In this respect, the mechanically strong connection between the reclining frame 11 and the intermediate frame 10 form the boom 68 ... 72nd

To drive the thigh section 15 and the lower leg section 16, a shaft 74 mounted between the two longitudinal bars 61 and 62 is provided at the foot end. To this shaft 74 rigidly parallel arms 75 and 76 are fixed, which are connected at their free end by a cylindrical strut 77 with each other. The strut

77 passes over arms 76 and 75. The protruding ends serve as a journal for two cylindrical rollers 78, of which only one is shown. The two roles

78 run in the guide rails 31 and support the lower leg section 16 at the relevant point.

The arms 75 and 76 project beyond the shaft 74 to the other side and serve as attachment points for two cam pieces 79 and 80. The cam pieces 79 and 80 each carry a cam surface 81 which extends approximately helically about the shaft 74 a bit. The cam surfaces 81 cooperate with the strut 26 at the bottom of the femoral member 15 in a manner described below.

In order to rotate the shaft 74 and so lift the levers 75, 76 sits on the shaft 74 rotatably another pair of levers 79, which serve as an articulation point for a connecting rod 85. The connecting rod 85 is connected to a lifting tube 86 of a drive motor 87. The structure of the drive motor 87 corresponds to the structure of the drive motor 44. The longitudinal axis of the structure connecting rod 85 and lifting tube 86 extends in plan view, parallel to the longitudinal spar 61 and adjacent to the longitudinal spar 61 on the inside. The motor 87 is supported on a tab 88, which is stiffened via an insert 89 relative to the longitudinal spar 61. The connection between the connecting rod 85 and the lifting tube 86 is articulated. In order to avoid buckling, the lifting tube 86 is guided in the region of the coupling point with the connecting rod 85 in a special way. On the two lower struts 64 and 66 two short U-shaped guide rails 90 and 91 attached. The two U-shaped guide rails 90 and 91 open towards each other and are at the same height.

At the connecting rod 85, a clevis 88 is attached, which engages over the free end of the lifting tube 86 from the outside. By aligned holes in the clevis 88 and the end of the lifting tube 86 performs an axle through which are rotatably mounted on the outside of the clevis 88 two rollers. The rollers run in the guide rails 90 and 91. A buckling of the joint between the clevis 88 and the lifting tube 86 is thus effectively avoided.

The attachment of the intermediate frame 10 on the turntable 64 is done by means of two angle flanges 92, of which only one can be seen in Figure 8 because of the representation. The angle flanges 92 are welded to the outside of the longitudinal bars 61 and 62, while their other leg with the underside of the respective longitudinal spar 61, 62 is flush.

Finally, 64 and 65, a motor bearing 94 is provided on the two transverse struts, which is attached to a downwardly projecting pillar 95. The pillar 95 is fixed with a flat side to the two struts 64 and 65. It protrudes in the assembled state in the space of the fifth wheel 64. On the engine mount 94 an unrecognizable engine similar to the engine 44 is articulated, which is supported on the strut 24 to raise or lower the back part 11 either. From this engine, only his lifting tube 97 can be seen. In the following explanation of the operation of the bed 1 is initially assumed by the lying position according to the figure 1. In this position, the base 1 is maximally moved together, ie the lifting tube 61 retracted in the guide tube 62. The toggle pairs 36, 37 are maximally folded. The intermediate frame 10 is located in the longitudinal direction of the bed 1. The back portion 14 is lowered and lies with its transverse strut 24 on the longitudinal bars 61, 62 of the intermediate frame 10. By appropriate actuation of the drive motor 87, the levers 75, 76 are brought into a position in which the lower leg portion 16 extends in a straight extension of the back portion 14 and the foot portion 17. In this position, the self-driven thigh portion 15 with its strut 26 is also on the two longitudinal beams 61 and 62.

The patient may optionally upright the back portion 14. To do this, he starts the relevant drive motor via a manual control. Its lifting tube 97 is extended and presses the back portion 14 upwards.

The raising of the lower leg portion 16 is done by the user setting the motor 87 in motion. The lift tube 86 is extended and pushes the connecting rod 85 in the direction of the shaft 74. This is rotated to pivot the levers 75, 76 up and push the lower leg member 16 up. By suitable stops in the guides 31, the lower leg portion 16 is simultaneously used when pivoting the lever 75, 76 to the central portion 13. As a result, the thigh portion 15 is also placed obliquely upward as shown in FIG. If the patient wishes to be put into a position through the bed 1, similar to a healthy person sitting on the edge of the bed, he first brings the lower leg and the thigh section 15, 16 into the position according to FIG brought a position of about 45 °, so that during the subsequent turning no excessive projection over the Bettumriss comes about. Once the reclining frame 11 is set accordingly, the base 8 moves up until the bottom of the intermediate frame 10 can rotate freely over the top of the two side walls 5, 6.

When this position is reached, the lifting motor 57 is stopped and instead of the rotary hinge 9 associated with the rotary motor 97 is set in motion. Whose lifting tube retracts and rotates the intermediate frame 10 together with the lying thereon lying frame 11 by 90 ° either to the left or to the right, depending on which repository the rotary motor 97 is articulated.

Once the rotational end position is reached, the lifting motor 57 is restarted to drive the base 8 to its smallest position together. In the downward movement, the bottom of the intermediate frame 10 engages the top of the side wall 5 and pushes it down.

After reaching the lowest position of the motor 87 is set in motion and in such a way that the lifting tube 86 is pulled into the associated guide tube. This movement pulls the connecting rod 83 back whereby the levers 75, 76 are pivoted downwards. This downward pivoting of the levers 75, 76 causes the foot section to also retract is pivoted down until it reaches the end position of Figure 2. As the shaft 74 rotates, the cam pieces 79 and 80 are turned upwardly and engage the strut 26. In the continued rotation, the strut 26 is raised due to the course of the cam surface 81, which pivots the thigh member 15 about the hinge between the spars 25 and 19 upwards. In the end position, the thigh part 15 is raised by about 2 cm to 5 cm in the region of the popliteal fossa of the patient. The result is a flat seat recess, which gives a secure seating experience.

As the lower leg member 16 is raised again, the cam pieces 79 and 80 pivot downwardly away from the strut 26. The thigh member 15 is lowered to the horizontal position.

The patient may eventually adjust the back section 14 more or less as needed.

As can be seen from the description of the function, the length of the lower leg section 16 in the chair or chair position measured from the upper edge of the mattress 12 may not be longer than the length of the lower leg in a normal-sized person. Otherwise he could not reach the ground with the soles of his feet.

It needs no special explanation as mentioned, the proportioning of thigh section 15 and lower leg section 16 must be adapted to the anatomy of humans. For the normal lying position of the lower leg section 16 would be too short, which is why the foot section 17 is provided, which carries its own mattress section. With the help of the bed 1, a patient can move from the lying position without any own effort and without having to resort to the help of nursing staff in a sitting position across the bed.

He can also be brought back from this position back into the lying position by the above described movement takes place backwards.

A rotating and standing bed is composed of a height-adjustable base and a lying frame, which is connected via a rotary hinge with the base. With the help of the rotary hinge, the lying frame can be rotated by 90 degrees with respect to the vertical axis.

The lying frame is divided into a back section, a central part, a thigh section and a lower leg section. In the rotated position, the lying frame can be folded in a Z-shape, with the back part, starting from the central section, standing upwards, and the lower leg part hanging down from the thigh part. In addition, it is ensured by a sliding mechanism that the thigh part at its leading edge, which is adjacent to the popliteal fossa of the patient, is raised by a few cm.

Claims

Claims:

1. Care and Aufstehbett (1) with a height-adjustable base (8),

with a lying frame (11) which is divided into a central part (13), a back part (14) connected to the central part (13), a thigh part (15) connected to the central part (13) and a thigh part (15) Lower leg part (16) is divided, wherein the central part (13) with the back part (14) and the thigh part (15) and the thigh part (15) with the lower leg part (16) via hinges (28) are interconnected by a horizontal hinge axis ( ) exhibit,

with drive means (87, 97) for pivoting the parts of the reclining frame (1) towards each other so as to occupy, in one position, a chair-like configuration (14) in which the lower leg part (16) extends downwardly, and

means (79,80,26) adapted to bring, in the chair-like configuration (13), the thigh part (15) in a position to extend obliquely upward from the central part (13) towards the undershaft part (16) runs.

2. Care and Aufstehbett according to claim 1, characterized in that on the base (8) a rotary hinge (9) is arranged, which has a vertical axis of rotation () and via which the lying frame (11) to the base (8) is.

-1.

3. Care and Aufstehbett according to claim 1, characterized in that the means (79,80,26) for pivoting the thigh part (15) comprise a cam mechanism ().

4. Care and Aufstehbett according to claim 1, characterized in that in the bed (1) a shaft (74) is rotatably mounted, which extends transversely to the longitudinal axis of the reclining frame (11) and on the actuating cam (79,80) are arranged ,

5. Care and Aufstehbett according to claim 4, characterized in that the shaft (74) via a drive motor (87) is rotatably offset.

6. Care and Aufstehbett according to claim 1, characterized in that the drive motor (87) is a drive motor, with which the lower leg part (16) about its transverse axis () is pivoted back and forth.

7. Care and Aufstehbett according to claim 1, characterized in that in the bed (1) has a shaft (74) is rotatably mounted on the non-rotatable lever (75,76) are fastened, which cooperate with the lower leg part (16), for bringing the lower leg member (16) from a downwardly depending position (12) to at least one horizontal position (16) so as to seat on the shaft (74) at least one cam disc (79, 80) adapted to engage the thigh member (15) to cooperate.

8. Care and Aufstehbett according to claim 3 or 7, characterized in that the thigh part (15) on its underside () a transverse strut (26) has, which serves as a counter surface () for the at least one cam disc (79,80).