Abstract
An orthopedic device for supporting a lower back of a user includes a mechanical energy store, a pelvic element, an upper body element with a first force transmission element and an upper leg element with a second force transmission element The upper leg element is arranged on the pelvic element such that it can be swivelled about a first swivel axis, the upper body element is movably arranged relative to the pelvic ele-ment, the first force transmission element can be engaged and disengaged with the second force transmission element by moving the upper body element relative to the pelvic element, and the mechanical energy store can be charged and discharged by swiv-elling the upper leg element relative to the upper body element when the first force transmission element is engaged with the second force transmission element.
Claims
1. An orthopedic device for supporting a lower back of a user, wherein the device comprises a mechanical energy store (18), a pelvic element (6), an upper body element (4) with a first force transmission element (26) and an upper leg element (2) with a second force transmission element (28), wherein the upper leg element (2) is arranged on the pelvic element (6) such that it can be swivelled about a first swivel axis (14), the upper body element (4) is movably arranged relative to the pelvic ele-ment (6), the first force transmission element (26) can be engaged and disengaged with the second force transmission element (28) by moving the upper body element (4) relative to the pelvic element (6), and the mechanical energy store (18) can be charged and discharged by swiv-elling the upper leg element (2) relative to the upper body element (4) when the first force transmission element (26) is engaged with the sec-ond force transmission element (28).
2. The orthopedic device according to claim 1, characterized by the fact that the first force transmission element (26) comprises a gearwheel that is eccentrically arranged on the pelvic element (6) such that it can be swivelled about a second swivel axis.
3. The orthopedic device according to claim 2, characterized by the fact that the upper body element (4) is connected to the first force transmission element (26) such that the first force transmission element (26) is swivelled about the second swivel axis when the upper body element (4) is moved relative to the pelvic ele-ment (6).
4. The orthopedic device according to claim 2, characterized by the fact that the upper body element (4) and the first force transmission element (26) feature connection elements (20, 22) that correspond with one another, so that the up-per body element (4) can be connected to the first force transmission element (26) in several positions.
5. The orthopedic device according to claim 1, characterized by the fact that the device has a displacement device (36) that is configured to move the first force transmission element (26) and/or the second force transmission element (28) towards one another when the upper body element (4) assumes an angle in re-lation to the pelvic element (6) that is smaller than a pre-determined threshold angle.
6. The orthopedic device according to claim 5, characterized by the fact that the displacement device (36) is configured to move the first force transmission ele-ment (26) and/or the second force transmission element (28) away from one an-other when the upper body element (4) assumes an angle in relation to the pel-vic element (6) that is greater than the pre-determined threshold angle.
7. The orthopedic device according to claim 5, characterized by the fact that at least two magnets (34) are arranged on the pelvic element (6) or the upper leg element (2) and at least one magnet (34) is arranged on the respective other element in such a way that they exert a force on one another, the direction of which changes when, during a movement of the upper body element (4) rela-tive to the pelvic element (6), the angle passes the pre-determined threshold angle.
8. The orthopedic device according to claim 1, characterized by the fact that the device can be brought into an active state, in which the first force transmission element (26) can be engaged and disengaged with the sec-ond force transmission element (28) by moving the upper body element (4) rela-tive to the pelvic element (6), and into a passive state.
9. The orthopedic device according to claim 8, characterized by the fact that the device features at least one activation element, the activation of which allows for the device to be brought from the active state into the passive state, and/or vice-versa.
10. The orthopedic device according to claim 1, characterized by the fact that the mechanical energy store (18) has at least one spring, prefera-bly at least one spiral spring.
Description
[0027] In the following, some examples of embodiments of the present invention will be explained in more detail by way of the attached figures: They show:
[0028] FIG. 1—an orthopedic device according to a first example of an embodiment of the present invention in the applied state,
[0029] FIGS. 2 and 3—a section of the device in various views,
[0030] FIG. 4—an exploded representation of the section from FIGS. 2 and 3,
[0031] FIG. 5—the representation of the section in a partially dismantled state,
[0032] FIGS. 6 to 8—representations of a section of a further embodiment of the present invention,
[0033] FIGS. 9 to 10—schematic representations of a section of a further embodiment of the present invention,
[0034] FIGS. 11 to 12—schematic representations of a section of a further embodiment of the present invention and
[0035] FIGS. 13 to 15—representations of an embodiment of the invention in the applied state.
[0036] FIG. 1 shows the orthopedic device in an applied state. It comprises an upper leg element 2, which is arranged on an upper leg of the user, and an upper body element 4, which is arranged on the upper body. The device also features a pelvic element 6, which is arranged on the pelvis of the user. Both the pelvic element 6 and the upper leg element 2 as well as the upper body element 4 are arranged on the respective body part of the user.
[0037] The orthopedic device also has a joint device 10, which performs several functions in the example of an embodiment shown. On the one hand, the upper leg element 2 is arranged about a first swivel axis 14 on the pelvic element 6 via a first splint 12. The upper body element 4 is also arranged on the pelvic element 6 via a second splint 16 such that it can be swivelled, wherein the swivel axis coincides with the first swivel axis 14 in this example of an embodiment.
[0038] The orthopedic device also has a mechanical energy store 18, which is a tension spring in the example of an embodiment shown.
[0039] FIG. 2 depicts an enlarged representation of the pelvic element 6. One recognizes a first connection element 20, on which the first splint 12 of the upper leg element 2 is to be arranged, and a second connection element 22, on which the second splint 16 of the upper body element 4 is arranged. A lever 24 is provided, on which the mechanical energy store 18 is positioned.
[0040] FIG. 3 depicts a side view of the device from FIG. 2. A first force transmission element 26, which is designed as a front gearwheel in the example of an embodiment shown, is situated on the second connection 22, which forms part of the upper body element 4. A corresponding second force transmission element 28 is positioned on the lever 24, which forms part of the upper leg element 2. The exploded view in FIG. 4 shows how it functions. The second force transmission element 28 is situated on the lever 24. The first force transmission element 26 is found as a separate component on the second connection element 22. It features four projections 30, which engage in four specially provided openings 32 on the second connection element 22. In FIG. 4, it can be recognized that a magnet 34 is arranged on two of the projections 30, wherein said magnet protrudes through the respective openings 32 when in the applied state. A displacement device 36 is arranged on the actual cover element such that it is torque-proof, said displacement device also comprising a series of magnets 38. In the example of an embodiment shown, they extend across the entire circumference of the displacement device 36, thereby affecting the magnets 34 on the first force transmission element 26. At the upper end of the displacement device 36 shown in FIG. 4, a positioning magnet 40 is depicted, which interacts with corresponding counter-magnets 42 that are arranged on the pelvic element 6. The positioning magnet 40 and the counter-magnets 42 are arranged such that opposite poles are directed towards one another. In the example of an embodiment shown, the displacement device 36 can thus be fixed on four different positions relative to the pelvic element 6 such that it Is torque-proof.
[0041] If the upper body element 4 and therefore the second connection element 22 is now twisted relative to the pelvic element 6, the position of the magnets 34 relative to the magnets 38 also changes. These are arranged in such a way that at a certain angle, at which the upper body element 4 is twisted relative to the pelvic element 6, the polarity of the magnets 38 changes, so that an attractive force acts between the magnets 34 and 38 up until this angle and a repelling force acts from this angle and be-yond. At the point at which an attractive force becomes a repelling force, the first force transmission element 26 moves out of the position shown in FIG. 3 and engages with the second force transmission element 28.
[0042] A locking device 44, which can be displaced in the circumferential direction, can be used to fix the position of the first force transmission device 26 relative to the second force transmission device, so that a displacement of one of the two force transmission elements is no longer possible. This prevents the two force transmission elements 26, 28 from either engaging or disengaging.
[0043] FIG. 5 depicts a section of the elements shown in FIG. 4 in a partially mounted representation. The displacement device 36 is found on the pelvic element 6. Two counter-magnets 42 and the first force transmission element 26 are also visible. The first force transmission element 26 can be fixed relative to the second connection element 22 via the locking device 44.
[0044] FIG. 6 depicts a joint device 10 for an orthopaedic device according to a further example of an embodiment of the present invention. It also features a second connection element 22, a first connection element 20 as well as a lever 24, and is positioned on a pelvic element 6, not depicted, via a mounting plate. In the example of an embodiment shown, the first force transmission element 26 is designed as a wrap spring 36. The second force transmission element 28 is not shown in FIGS. 6 and 7, and is designed as a rod or shaft that extends inside the wrap spring 26.
[0045] FIG. 7 depicts the device from FIG. 6 from another angle. One recognizes the first force transmission element 26. A driver 48 is situated on the upper leg element 2; said driver can be more clearly seen in the partially dismantled representation in FIG. 8. It features a recess 15, in which a pin 52 engages when the pin 52 is moved relative to the recess 50 of the driver 48. This occurs along a curved elongated hole 54. Once the pin 52 has engaged with the recess 50, a further movement of the two components causes the wrap spring to be moved such that its cross-section reduces. This leads to a friction connection between the first force transmission element, designed as a wrap spring, and the second force transmission element 28, designed as a shaft and situated inside the wrap spring 26.
[0046] FIG. 9 shows a schematic representation of a further joint device. A section of the upper leg element 2 is depicted on the first connection element 20. A section of the upper body element 4 is found on the second connection element 22. A housing 62 is depicted between them. The mechanical energy store 18 is arranged between the first connection element 20 and the housing 62 in the form of an elastic element, wherein said housing is arranged on a pelvic element 6, not depicted, such that it is pivotable.
[0047] In the example of an embodiment shown, a circular friction profile is found on the housing 62. The first connection element 20 and thus the upper leg element 2 arranged on it are arranged on the pelvic element 6, not depicted, such that it can be swivelled about the first swivel axis 14. The second connection element 22 features a friction projection 58 and is arranged via a lever 60 on the pelvic element 6 such that it can be swivelled about the same swivel axis 14. In the example of an embodiment shown, the friction projection 58 forms the first force transmission element and the friction profile 56 the second force transmission element 28.
[0048] FIG. 9 depicts the situation in which there is a gap between the friction projection 58 and the friction profile 56, so that a frictional connection between the two does not occur. In this state, if an upper leg, which is connected to the upper leg element 2, is raised, it is twisted clockwise about the first swivel axis 14 in the representation depicted. The housing 62 is also swivelled about the swivel axis 14 by way of the mechanical energy store 18. As there is no frictional connection between the two force transmission elements 26, 28, the mechanical energy store 18 is not charged.
[0049] FIG. 10 depicts the situation in which the upper body element 4 has been swivelled relative to the pelvic element 6, which is also not depicted in FIG. 10, because, for instance, the wearer of the orthopedic device has bent forward. The upper body element 4 has therefore been swivelled anti-clockwise relative to the pelvic element 6. This causes the friction projection 58 of the second connection element 22 to come into contact with the friction profile 56 of the housing 62; It is pushed against said friction profile such that a frictional connection occurs between the two elements. If, in this situation, the upper leg is raised, i.e. the upper leg element 2 is swivelled clockwise about the swivel axis 14, the housing 62 can no longer be swivelled relative to the upper body element 4 due to the frictional connection. Instead, the mechanical energy store 18 is charged and the elastic element stretched. This generates a force which supports the wearer when straightening up, i.e. the anti-clockwise swivelling of the upper leg element 2.
[0050] FIGS. 11 and 12 show a further example of an embodiment. The second connection element 22 is arranged on the pelvic element 6 via a rotatable gearwheel 64. A spiral spring 66 is arranged on the first connection element 20, on which the upper leg element 2, not depicted in FIGS. 11 and 12, can be arranged. It is clear that the gearwheel has a toothless area. FIG. 11 shows the situation in which the upper leg element 12 and the first connection element 20 can be swivelled anti-clockwise without charging the spiral spring 66. In this case, the small gearwheels 70 are rotated. Given that the upper of the small gearwheels 70 lies, with its teeth, in the toothless area 68 of the gearwheel 64, this small gearwheel 70 is not engaged with the gearwheel 64, so that the small gearwheels 70 can be rotated without charging the spiral spring 66.
[0051] FIG. 12 depicts a different situation in which the upper body element 4, which is to be arranged on the second connection element 22, has been swivelled relative to the hip element 6. This also causes the gearwheel 64 to rotate about its rotational axis, so that a toothed area, rather than the toothless area 68, engages with the upper small gearwheel 70. If, in this situation, the upper leg element 2 with the first connection element 20 is swivelled and swivelled anti-clockwise about the first swivel axis 14, the spiral spring 66 is charged.
[0052] FIGS. 13 to 15 depict the device with the elements from FIGS. 11 and 12 in different positions in the applied state. In each case, one recognizes an upper leg element 2, an upper body element 4 as well as the hip element 6, on which the spiral spring 66 and the gearwheel 64 in particular can be recognized. FIG. 13 depicts the wearer of the device in an upright position. Due to its toothless area 68, the gearwheel 64 is not engaged with the small gearwheel 70, such that the spiral spring 66 is not tensioned, regardless of the position of the upper leg element 2.
[0053] FIG. 14 depicts the situation in which the wearer of the device has bent his torso forwards. As a result, the upper body element 4 with the second connection element 22 is swivelled relative to the pelvic element 6. The gearwheel 64 is rotated about its swivel axis and now engages with the teeth of the small gearwheel 70, so that the spiral spring 66 is tensioned as of this point. Of course, the upper leg does not necessarily need to be moved to tension the spiral spring 66. It is also possible to further lower the upper body in order to tension the energy store 18, i.e. the spiral spring 66 in the example of an embodiment shown.
[0054] FIG. 15 shows the person walking. In this case, the upper body and the upper body element 4 are also not swivelled relative to the hip joint, so that the gearwheel 64 is not engaged with the upper small gearwheel 70 and the spiral spring 66 is therefore not tensioned.
REFERENCE LIST
[0055] 2 upper leg element [0056] 4 upper body element [0057] 6 pelvic element [0058] 8 strap [0059] 10 joint device [0060] 12 first splint [0061] 14 first swivel axis [0062] 16 second splint [0063] 18 mechanical energy store [0064] 20 first connection element [0065] 22 second connection element [0066] 24 lever [0067] 26 first force transmission element [0068] 28 second force transmission element [0069] 30 projection [0070] 32 opening [0071] 34 magnet [0072] 36 displacement device [0073] 38 magnet [0074] 40 positioning magnet [0075] 42 counter magnet [0076] 44 locking device [0077] 46 mounting plate [0078] 48 driver [0079] 50 recess [0080] 52 pin [0081] 54 elongated hole [0082] 56 friction profile [0083] 58 friction projection [0084] 60 lever [0085] 62 housing [0086] 64 gearwheel [0087] 66 spiral spring [0088] 68 toothless area [0089] 70 small gearwheel
