EP3965713A1

EP3965713A1 - Length-adjustment device for a finger motion rail, length-adjustable finger motion rail and therapeutic device comprising at least one length-adjustable finger motion rail of this type and method for length adjustment

Info

Publication number: EP3965713A1
Application number: EP20727142.0A
Authority: EP
Inventors: Pascal Lindemann
Original assignee: Johannes Gutenberg Universitaet Mainz; Universitaetsmedizin der Johannes Gutenberg-Universitaet Mainz
Current assignee: Johannes Gutenberg Universitaet Mainz; Universitaetsmedizin der Johannes Gutenberg-Universitaet Mainz
Priority date: 2019-05-08
Filing date: 2020-05-08
Publication date: 2022-03-16
Also published as: DE112020002242A5; WO2020224728A1; US20220296454A1; CN113825480A; CA3138890A1; JP2022531837A; DE102019112051A1; AU2020267624A1; DE102019112051B4; KR20220006515A; CN113825480B

Abstract

The invention relates to a length-adjustment device (3) for a finger motion rail (2) of a therapeutic device (1) for carrying out a continuous, passive and/or actively assisted movement of a finger and/or a thumb of a hand, a finger motion rail (2) comprising a length-adjustment device (3) of this type, and a corresponding therapeutic device (1) comprising at least one finger motion rail (2) of this type. The invention also relates to a method for adjusting the length of a finger motion rail (2) on a therapeutic device (1) of this type. The length-adjustment device (3) according to the invention or the length-adjustment method according to the invention advantageously allows for a finger motion rail (2) to be automatically shifted along the adjustment rail (30) using the drive (10) already provided on a therapeutic device (1) for the finger motion rail (2), and for same to be fixed on the adjustment rail (30) and therefore on the therapeutic device (1) in a desired position according to the finger length or hand size/length of the user, in order to then be able to carry out a continuous, passive and/or actively assisted movement of a finger and/or of a thumb of a hand in a stable position. Time-consuming manual adjustment is thereby advantageously avoided.

Description

Length adjustment device for a finger movement splint, length adjustable finger movement splint and therapy device with at least one such length adjustable finger

Movement rail and procedure for length adjustment

The present invention relates to a length adjustment device for a finger movement rail of a therapy device for performing a continuous, passive and / or actively assisted movement of a finger and / or a thumb of a hand; a finger movement rail for carrying out such a movement with such a length adjustment device and a therapy device for carrying out a continuous, passive and / or actively assisted movement of at least one finger and / or a thumb of a hand, comprising at least one such finger movement rail.

The present invention also relates to a method for adjusting the length of a finger movement splint on a therapy device for performing a continuous, passive and / or actively-assisted movement of at least one finger and / or one thumb of a hand.

Therapy devices with finger movement rails for the automated movement of individual and / or multiple fingers of one hand enable controlled joint mobilization regardless of the availability of physiotherapeutic staff. By means of automated training that is independent of the time of the day and individually tailored to the respective user, such devices improve the therapeutic success in a cost-effective way and shorten the recovery time of the user. So far, a number of such therapy and training devices have become known, which differ, inter alia, in the way in which the finger joints of the fingers automatized force is exerted. In JP 2011 115 248 A and in US 2014/028 86 64 A1 devices for supporting finger movement are disclosed, the movement mechanisms of which are arranged laterally next to the respective fingers, so that a restriction of movement by resting on the finger is avoided. JP 2011 115 248 A discloses a device for supporting a movement, in particular a finger movement splint, which should be in the Uage to set a three-joint region on a naturally curved posture. In US 2014/0288664 A1, however, a finger movement support device is disclosed, which uses sensor technology to determine the user's intention with regard to a desired finger movement ("bending or stretching") and then supports this movement with the aid of piezoelectric drives arranged on each phalanx.

However, due to their construction principle, both devices can only be insufficiently adapted to the differentiated anatomical shapes of the fingers or thumbs of different Pati ducks, whereby the automated movement of the fingers carried out by them can deviate relatively strongly from a natural movement.

From CN 105 726 263 A, a portable exoskeleton training robot for rehabilitation of the hand has become known in this context. This training robot comprises a fixation device for the hand, which can be attached to the back of the hand and the wrist, and rehabilitation devices for the fingers and for the thumb. The rehabilitation devices are each driven by linear motors. In order to adapt the training robot to the anatomical conditions of the respective user, CN 105 726 263 A provides threaded rods, which enable at least a manual length adjustment for each individual rehabilitation device.

To improve this, DE 11 2017 000 012 B4 discloses a therapy device for carrying out a continuous, passive and / or actively-assisted movement of the fingers and thumb of a patient's hand, which allows each selected finger to have its own finger movement rail to make available with kinematics of motion, which is arranged to the side of the finger to be treated, and allows it to bend and / or stretch without hindrance. The well-known finger movement rail is based on a slide-rail movement kinematics, which enables an automated finger movement that an anatomically natural finger movement movement comes very close. As an alternative to this, DE 10 2019 112 049.7 describes a finger movement splint or a therapy device, the motion kinematics of which includes a multi-joint hinge as a means for flexing a finger base joint and is therefore particularly robust to the action of axial forces and torsional forces on the finger movement splint is. Reference is hereby expressly made in full to the principles of movement of both of the aforementioned publications.

In the case of all such therapy devices, the device, in particular the individual finger movement rails, must be adapted to the respective anatomy, that is to say to the hand size and / or the individual finger dimensions, before training begins. For this purpose, the individual finger movement rails are usually attached manually to the upper shell or holder of the respective therapy device in the optimal position for the respective user, the finger movement rails must then be released manually after a training session and then again manually for the next user be reattached. This procedure is time-consuming and, in everyday clinical practice, disadvantageously shortens the training time available for the respective user with the therapy device.

The object of the present invention is therefore to provide a device or a method which automatically and quickly and inexpensively carries out the adaptation of a finger movement splint or a corresponding therapy device to the anatomy of the respective user.

This object is achieved by a catch adjustment device for a finger movement rail of a therapy device for performing a continuous, passive and / or actively assisted movement of a finger and / or a thumb of a hand with the features of claim 1; by a finger movement rail for performing a continuous, passive and / or actively-assisted movement of a finger and / or a thumb of a hand with the features of patent claim 12; by a therapy device for carrying out a continuous, passive and / or actively-assisted movement of at least one finger and / or a thumb of a hand with the features of claim 13; as well as by a method for adjusting the jaws of a finger movement splint on a therapy device for guiding a continuous, passive and / or actively-assisted movement of at least one finger and / or a thumb of a hand with the features of claim 14 solved. Advantageous refinements and developments, which can be used individually or in combination with one another, are the subject of the dependent claims.

A length adjustment device according to the invention comprises:

at least one adjustment rail;

at least one, with respect to the adjustment rail movable holding means for holding tion of the finger movement rail;

at least one first, arranged on the holding means, blocking mechanism for blocking the movement of the holding means in a first direction ent long the adjustment rail;

at least one second, arranged on the holding means, blocking mechanism for blocking the movement of the holding means in a second direction ent long the adjustment rail;

at least one sledge,

wherein the slide can be operatively connected to the finger movement rail via at least one connecting element;

wherein the carriage is set up to be moved along the adjustment rail by means of a drive for moving the finger movement rail;

wherein the carriage is designed such that, when it is moved by means of the drive in the first direction along the adjustment rail, upon contact with the first blocking mechanism, a force exerts on the first blocking mechanism so that the first blocking mechanism is released and the holding means together with it the finger moving rail is movable by moving the carriage in the first direction;

and wherein the carriage is designed such that, when it is moved by means of the drive in the second direction along the adjustment rail, a force is exerted on the second blocking mechanism upon contact with the second blocking mechanism, so that the second blocking mechanism is released and the holding means together with the Finger movement rail can be moved in the second direction by moving the slide. In a first embodiment of the length adjustment device, the slide can preferably be operatively connected directly to the drive. In an alternative, preferred embodiment, the slide can also be operatively connectable to the drive indirectly via at least one connecting element. A configuration in which the slide can be directly connected to the drive, in particular via a direct connection to a spindle of the drive, enables a comparatively simple construction of the length adjustment device, whereas a configuration in which the slide can be indirectly connected to the drive via at least one connecting element comparatively compact, especially flat design of the Längenein adjusting device favors.

In a further embodiment, the adjustment rail is preferably a grid path with at least two grid elements. A grid track with at least two grid elements advantageously enables the holding means and thus also the finger movement rail to be locked on the therapy device in a simple manner.

It is preferred that the at least two grid elements protrude essentially wedge-shaped (triangular) and / or semicircular and / or in the form of a circular arc triangle (so-called “Reuleaux triangle”) from the plane of the adjustment rail. Raster elements, which protrude from the plane of the adjustment path in this way, advantageously enable a positive locking, with a wedge (triangular) shape and / or a semicircular shape and / or the shape of a circular arc triangle (so-called "Reuleaux triangle shape") ) the effect of the blocking mechanism by exerting force by means of the slide can be overcome more easily (with less effort) than would be the case, for example, with grid elements protruding from the plane in a cuboid shape.

Alternatively, the at least two grid elements can also be configured as holes within the adjustment rail. An adjustment rail with holes as Rasterelemen th in the sense of a perforated plate advantageously allows a flatter design of the adjustment rail. In a further embodiment, the holding means preferably has a first side wall for holding the blocking mechanisms and a second side wall for holding the finger movement rail, which are connected to one another at least via a base element, thereby forming a substantially U-shaped cross section which the adjustment rail runs. A substantially U-shaped holding means advantageously enables simple and inexpensive production, depending on the material selected, for example by bending a metal sheet, by injection molding or 3D printing. In addition, such a holding means can easily be moved along the adjusting rail as a guide.

In an alternative embodiment, it has proven useful if the adjusting rail comprises a first side wall and a second side wall along its longitudinal axis, the first side wall, the adjusting rail and the second side wall together forming a substantially U-shaped cross section, and the holding means is movable angeord net with respect to the adjustment rail within the substantially U-shaped cross section. Such an embodiment advantageously leads to a particularly flat design of the length adjustment device and thus to a small space requirement on a finger movement rail or on a therapy device.

According to the invention, an embodiment of the length adjustment device is also preferred in which the blocking mechanisms each have at least one fixing means arranged on the holding means, preferably on the first side wall; one, via an axis of rotation rotatably on the holding means, preferably on the first side wall, articulated blocking lever; and a means for springing the blocking lever with respect to the fixing means, the blocking lever being designed such that, when the carriage comes into operative connection with the blocking lever, the blocking lever is rotated from a blocking position to an unblocking position and the holding means is thereby rotated in at least one direction is movable. Such a blocking mechanism advantageously enables a change in position of the holding means and of the finger movement rail held by the holding means along the adjustment rail on the therapy device, caused by the carriage and thus the drive of the finger movement rail. As an alternative to this, the blocking mechanisms can also be designed in one piece and made from a resilient material, in particular spring steel and / or hard rubber. The fixing means and the blocking levers can advantageously be formed from a single piece of resilient material, the blocking levers being angled relative to the fixing means and the intersection points between the blocking levers and the fixing means being able to correspond to the axes of rotation. In this design form, the suspension means can be replaced by the spring properties of the spring material, in particular the spring steel and / or the hard rubber, which advantageously saves one component per blocking mechanism and the size of the blocking mechanism can be reduced.

In addition, an embodiment has proven itself in which the blocking levers in their respective blocking position are in operative connection with the adjustment rail, in particular with the raster elements of an adjustment rail designed as a raster path, and in their respective unblocking position with the adjustment rail, in particular with the raster elements trained as a grid adjustment rail, are not in operative connection. When the blocking levers are in operative connection with the adjustment rail, in particular with the grid elements of an adjustment rail designed as a grid path, a movement of the holding means along the adjustment rail is partially prevented and the finger movement rail is held in a stable and secure position so that the therapy movement is carried out safely can be. If the blocking levers are not in operative connection with the adjustment rail, in particular with the grid elements of an adjustment rail designed as a grid path; the holding means can advantageously be moved along the adjustment rail to any position or, in the case of an adjustment rail designed as a grid path, to a position depending on the grid elements or the holes.

In a further embodiment it is preferred that the drive is a linear drive, in particular a spindle motor, a pneumatic cylinder, a hydraulic cylinder and / or a cable pull. A linear drive advantageously enables a controlled movement of the carriage and thus both the finger movement rail while the therapy movement is being carried out and the holding means together with the finger movement rail during length adjustment along the adjustment rail. The present invention also relates to a finger movement splint for performing a continuous, passive and / or actively-assisted movement of a finger and / or a thumb of a hand, comprising a catch adjustment device according to one of claims 1 to 11.

The present invention also relates to a therapy device for performing a continuous, passive and / or actively-assisted movement of at least one finger and / or a thumb of a hand, comprising at least one finger movement splint according to claim 12.

Finally, the present invention relates to a method for adjusting the jaws of a finger movement rail on a therapy device for performing a continuous, passive and / or actively-assisted movement of at least one finger and / or a thumb of a hand, which is characterized by the fact that a connecting element a finger movement rail arranged on a holding means is moved with the aid of a drive over a slide along an adjustment rail from an amplitude for a therapy movement into a first or second adjustment range; wherein the carriage, when it is moved by means of the drive in a first direction along the adjustment rail into the first adjustment range, exerts a force on the first blocking mechanism upon contact with a first blocking mechanism, so that the first blocking mechanism is released and the holding means together with the finger Movement rail is moved by moving the carriage in the first direction and wherein the carriage, when it is moved by means of the drive in a second direction along the adjustment rail into the second adjustment range, exerts a force on the second blocking mechanism upon contact with a second blocking mechanism, so that the second blocking mechanism is released and the holding means together with the finger movement rail is moved in the second direction by moving the carriage.

A catch adjustment device according to the invention or an inventive method for catch adjustment advantageously enables a finger movement rail to be automatically moved along an adjustment rail using the drive already present for the finger movement rail on a therapy device and at a desired position - depending on the finger length or hand size / length of the user zers - to be fixed on the adjustment rail and thus on the therapy device in order to then be able to carry out a continuous, passive and / or actively-assisted movement of a finger and / or a thumb of a hand in a stable position. A time-consuming manual setting is thereby advantageously avoided.

Additional details and further advantages of the invention are described below with reference to preferred exemplary embodiments and in conjunction with the accompanying drawing. They show schematically:

1 shows an embodiment of a length adjustment device according to the invention in a perspective view; 2 shows part of a length adjustment device according to FIG. 1 with a blocking lever in a deblocking position;

3a shows the length adjustment device from FIGS. 1 and 2 during the movement in the direction B1, a blocking lever of the second blocking mechanism being in a maximally deflected position above a grid element;

3b shows the length adjusting device from FIG. 3a, in which the blocking lever of the second blocking mechanism is in a minimally deflected position;

Fig. 4a and

4b shows a schematic comparison of a first, multi-part embodiment of a blocking mechanism according to the invention (FIG. 4a) and a second embodiment of a blocking mechanism according to the invention, formed in one piece from spring steel (FIG. 4b);

5 shows a second embodiment of a length adjustment device according to the invention with a finger movement rail; and 6 shows a side view of an embodiment of a finger movement rail with length adjustment device and drive.

In the following description of preferred embodiments of the present invention, the same reference symbols denote the same or comparable components.

Fig. 1 shows an embodiment of a length adjustment device 3 according to the invention in a perspective view. The length adjustment device 3 for a finger movement rail 2 of a therapy device 1 for carrying out a continuous, passive and / or actively assisted movement of a finger and / or a thumb of a hand, comprises at least one adjustment rail 30; at least one holding means 34, movable with respect to the adjustment rail 30, for holding the finger movement rail 2; at least one first, arranged on the holding means 34, blocking mechanism 31 for blocking the movement of the holding means 34 in a first direction B l along the adjustment rail 30 and at least one second, arranged on the holding means 34, blocking mechanism 32 for blocking the movement of the Hal temittels 34 in a second direction B2 along the adjustment rail 30.

Fig. 2 shows part of a length adjustment device 3 according to FIG. 1 with a blocking lever 312 in a deblocking position P2.

As shown in Figures 1 and 2, the retaining means 34 may preferably have a first side wall

341 for holding the blocking mechanisms 31 and 32 and a second side wall

342 for holding the finger movement rail 2, which are connected to one another at least via a base element 343, as a result of which an essentially egg-shaped cross section is formed through which the adjustment rail 30 extends.

In addition, the length adjustment device 3 according to the invention comprises at least one slide 33, the slide 33 being operatively connectable to the finger movement rail 2 via at least one connecting element 20a or 20b (see FIG. 6), and the slide 33 being set up by means of a drive 10 for moving the finger moving rail 2 to be moved along the adjusting rail 30. As shown, for example, in FIGS. 1 and 2, the slide 33 can be connected directly to the drive 10, in particular special by a direct operative connection with a spindle 102 of the drive 10, be operatively connected. According to the invention, the carriage 33 is designed such that when it is moved in the first direction B1 along the adjustment rail 30 by means of the drive 10, a force is exerted on the first blocking mechanism 31 upon contact with the first blocking mechanism 31, so that the first blocking mechanism 31 released and the holding means 34 together with the finger movement rail 2 can be moved by moving the slide 30 in the first direction B1.

3a and 3b show such a movement of the holding means 34 along the A adjusting rail 30 in the first direction B1.

To move the holding means 34 along the adjustment rail 30 from one operating position fixed on the A setting rail 30 to another and thus to adjust the length of the finger movement rail 2, a connecting element 20a or 20b (see. Fig. 6) a, on a holding means 34 arranged finger movement rail 2 with Hil fe a drive 10, in particular by means of the spindle 102 driven by the motor 101 of the drive 10, via a slide 33 along an adjustment rail 30 from an amplitude A 1 for a therapy movement in a first A2 or second A3 setting range moved. The carriage 33 exercises when it is moved by means of the drive 10, in particular by means of the spindle 102 driven by the motor 101 of the drive 10, in a first direction B1 along the adjustment rail 30 into the first adjustment range A2, upon contact with a first blocking mechanism 31 exerts a force on the first blocking mechanism 31 so that the first blocking mechanism 31 is released and the holding means 34 together with the finger movement rail 2 is moved in the first direction B1 by moving the slide 30. As can be seen in Fig. 2, the blocking lever 312 is moved away from the adjustment rail 30 or its grid elements 31 against the spring force of the means 313 for suspension by a sliding foot 331 of the carriage 33, whereby the interaction between the blocking lever 312 and the adjustment rail 30 canceled and a movement of the carriage 33 together with the holding means 34 and finger movement rail 2 is enabled. In the embodiment shown here, the slide 33 can comprise two slide feet 331 and a transverse element 332 connecting the slide feet 331 to one another, so that the slide 33 can in particular have an H-shaped shape when viewed from above. The blocking lever 322 of the second blocking mechanism 32 blocks the movement of the holding means 34 in the first direction B1 does not, but can simply be pulled along by the holding means 34 moved by the slide 33.

3a shows the length adjustment device 3 from FIGS. 1 and 2 during the movement in the direction B1, with a blocking lever 322 of the second blocking mechanism 32 in a maximally deflected position above a grid element 301. Fig. 3b shows the same length adjustment device 3 in which the blocking lever 322 of the second blocking mechanism 32 is in a minimally deflected position.

Correspondingly, the following applies to the movement in an opposite second direction B2: The slide 30 of a length adjustment device 3 according to the invention is designed such that, when it is driven by the drive 10, in particular by the spindle 102; driven by the motor 101 of the drive 10; is moved in the second direction B2 along the adjusting rail 30, exerts a force on the second blocking mechanism 32 upon contact with the second blocking mechanism 32, so that the second blocking mechanism 32 is released and the holding means 34 together with the finger movement rail 2 by moving the carriage 30 is movable in the second direction B2. In this case, when the carriage 30 is moved by means of the drive 10 in a second direction B2 along the adjustment rail 30 into the second adjustment range A3, upon contact with a second blocking mechanism 32, a force is exerted on the second blocking mechanism 32, so that the The second blocking mechanism 32 is released and the holding means 34 together with the finger movement rail 2 is moved in the second direction B2 by moving the carriage 33. The exertion of force can also take place here via the sliding foot 331. The blocking lever 312 of the first blocking mechanism 31 does not block the movement of the holding means 34 in the second direction B2, but can simply be pulled along by the holding means 34 moved by the carriage 33.

The adjusting rail 30 can in particular be a grid path with at least two grid elements 301. The at least two grid elements 301 can be essentially wedge-shaped (triangular) - as shown in particular in FIGS. 1 to 3b - and / or semicircular and / or in the form of a circular arc triangle (so-called “Reuleaux triangle”) from the plane of Adjusting rail 30 protrude. In Figures 2, 3a and 3b is to see how the blocking levers 31 and 32 can interact with grid elements 301 protruding from the plane of the adjustment rail 30, so that a blocking lever 31 or 32 blocks the movement of the holding means 34 in one direction of movement B1 or B2 and in the other direction of movement can be pulled over the grid elements 301.

For this purpose, the blocking mechanisms 31 and 32 preferably each include at least: a fixing means 314 or 324 arranged on the holding means 34, preferably on the first side wall 341; one, via an axis of rotation 311 or 321 rotatably on the holding means 34, preferably on the first side wall 341, articulated blocking lever 312 or 322; and a means for suspension 313 or 323 of the blocking lever 312 or 322 with respect to the fixing means 314 or 324; The blocking lever 312 or 322 is designed so that when the carriage 33 comes into operative connection with the blocking lever 313 or 323, the blocking lever 312 or 323 is rotated from a blocking position PI to a deblocking position P2 and the holding means 34 can thereby be moved in at least one direction B1 or B2. The blocking levers 313 or 323 can be in their respective blocking position PI with the adjustment rail 30, in particular with the grid elements 301 of an adjustment rail 30 formed as a grid path, and in their respective unblocking position P2 with the adjustment rail 30, in particular preferably not be in operative connection with the grid elements 301 of an adjustment rail 30 designed as a grid path.

As an alternative to a multi-part design of the blocking mechanisms 31 and 32 as described, the blocking mechanisms 31 and 32 can also advantageously be constructed in one piece and made of resilient material, in particular spring steel and / or hard rubber.

4a and 4b show a schematic comparison of a first, multi-part embodiment of a blocking mechanism 31 or 32 according to the invention (Fig. 4a) and a second embodiment of a blocking mechanism 31 or 32 according to the invention, formed in one piece from a resilient material (Fig. 4b). It can be seen that in this embodiment the fixing means 314 or 324 and the blocking levers 313 or 323 are advantageously made from a single piece of resilient material, for example Spring steel and / or hard rubber, can be formed, the blocking lever 313 or 323 relative to the fixing means 314 or 324 preferably angled and the intersections between the blocking levers 313 and 323 and the fixing means 314 and 324 the axes of rotation 311 or 321 correspond.

As an alternative to an adjustment rail 30 designed as a grid path with at least two grid elements 301 protruding from the plane of the adjustment rail 30, the at least two grid elements 301 of the adjustment rail 30 designed as a grid path can also be designed as holes within the adjustment rail 30 (not shown).

Fig. 5 shows a second embodiment of a length adjustment device 3 according to the invention with a finger movement rail 2 in which the adjustment rail 30 preferably comprises a first side wall 302 and a second side wall 303 along its longitudinal axis, the first side wall 302, the adjustment rail 30 and the second Side wall 303 together form a substantially U-shaped cross section, and in particular the holding means 34 is arranged movably within the substantially U-shaped cross section with respect to the adjustment rail 30. To implement this comparatively compact design, the carriage 33 is here preferably indirectly operatively connected to the drive 10 via at least one connecting element 103 (see also FIG. 6).

Finally, FIG. 6 shows a side view of an embodiment of a finger movement rail 2 with length adjustment device 3 and drive 10. The drive 10 can preferably be a linear drive, in particular a spindle motor, a pneumatic cylinder, a hydraulic cylinder and / or a cable pull. 6 shows an example of a drive 10 designed as a spindle motor, the motor 101 of which drives a spindle 102, which in turn interacts with the slide 33 via at least one connecting element 103. For this purpose, the connecting element 103 can preferably comprise at least one section which runs within the essentially U-shaped cross-section formed by the adjustment rail 30, the first side wall 302 and the second side wall 303 (cf. also FIG. 5).

The length adjustment device 3 according to the invention or the method according to the invention for adjusting the length advantageously allows a finger movement rail 2 with Help for the finger movement rail 2 on a therapy device 1 already existing drive 10 along the adjustment rail 30 and automatically move to egg ner position - depending on the finger length or hand size / length of the user - on the adjustment rail 30 and thus on to fix the therapy device 1 in order to then be able to carry out a continuous, passive and / or actively-assisted movement of a finger and / or a thumb of a hand in a stable position. Time-consuming manual setting is thereby advantageously avoided.

List of reference symbols

1 therapy device

10 drive

101 engine

102 spindle

103 connecting element

2 finger movement splint

20a / b connecting element 3 length adjustment device

30 adjustment rail

301 grid element

302 first side wall

303 second side wall

31 first blocking mechanism

311 first axis of rotation

312 first locking lever

313 first means of suspension

314 first fixative

32 second blocking mechanism

321 second axis of rotation

322 second locking lever

323 second means of suspension

324 second fixative

33 sledges

331 sliding foot

332 cross member 34 holding means

341 first side wall

342 second side wall 343 floor element

B 1 first direction

B2 second direction

P 1 blocking position

P2 unblocking position

Al amplitude for the therapy movement

A2 first setting range

A3 second setting range

Claims

1. Length adjustment device (3) for a finger movement rail (2) of a therapy device (1) for performing a continuous, passive and / or actively assisted movement of a finger and / or a thumb of a hand, including:

- At least one adjustment rail (30);

at least one, with respect to the adjustment rail (30) movable Haltemit tel (34) for holding the finger movement rail (2); at least one first, on the holding means (34) arranged, blocking mechanism (31) for blocking the movement of the holding means (34) in a first direction (B1) along the adjustment rail (30);

at least one second, on the holding means (34) arranged, blocking mechanism (32) for blocking the movement of the holding means (34) in a second direction (B2) along the adjustment rail (30);

at least one slide (33),

- The carriage (33) via at least one connecting element (20a; 20b) with the finger movement rail (2) can be effectively connected;

wherein the carriage (33) is set up to be moved along the adjustment rail (30) by means of a drive (10) for moving the finger movement rail (2);

wherein the carriage (33) is designed so that when it is moved by means of the drive (10) in the first direction (B1) along the adjustment rail (30), a force is applied upon contact with the first blocking mechanism (31) the first blocking mechanism (31) exerts so that the first blocking mechanism (31) is released and the holding means (34) together with the finger movement rail (2) can be moved in the first direction (B1) by moving the slide (33) and wherein the carriage (33) is designed so that when it is moved by means of the drive (10) in the second direction (B2) along the adjusting rail (30), a force is exerted on the upon contact with the second blocking mechanism (32) second blocking mechanism (32) exerts, so that the second blocking mechanism (32) is released and the holding means (34) can be moved together with the finger movement rail (2) by moving the carriage (33) in the second direction (B2).

2. Length adjustment device (3) according to claim 1, characterized in that the slide (33) can be directly connected to the drive (10); or that the slide (33) can be actively connected to the drive (10) indirectly via at least one connecting element (103).

3. Length adjustment device (3) according to claim 1 or 2, characterized in that the adjustment rail (30) is a grid path with at least two grid elements th (301).

4. Längeneinste llvorrichtung (3) according to claim 3, characterized in that the at least two grid elements (301) protrude substantially wedge-shaped (triangular) and / or semicircular and / or in the form of a circular arc triangle from the plane of the adjustment rail (30) .

5. length adjustment device (3) according to claim 3, characterized in that the at least two grid elements (301) are designed as holes within the adjustment rail (30).

6. length adjustment device (3) according to any one of claims 1 to 5, characterized in that the holding means (34) has a first side wall (341) for holding tion of the blocking mechanisms (31; 32) and a second side wall (342) for holding the Has finger movement rails (2) which are connected to one another at least via a base element (343), whereby a substantially U-shaped cross section is formed through which the adjustment rail (30) runs.

7. Length adjustment device (3) according to one of claims 1 to 5, characterized in that the adjusting rail (30) comprises a first side wall (302) and a second side wall (303) along its longitudinal axis, the first side wall (302) being , the adjustment rail (30) and the second side wall (303) together men form a substantially U-shaped cross section, and wherein the Hal temittel (34) is movably arranged within the substantially U-shaped cross section with respect to the adjustment rail (30).

8 length adjustment device (3) according to any one of the preceding claims, characterized in that the blocking mechanisms (31; 32) each comprise at least:

a fixing means (314; 324) arranged on the holding means (34), preferably on the first side wall (341);

one, via an axis of rotation (311; 321) rotatable on the holding means (34), preferably in front of the first side wall (341), articulated blocking lever (312; 322);

and a means for resilience (313; 323) of the blocking lever (312; 322) with respect to the fixing means (314; 324);

wherein the blocking lever (312; 323) is designed such that, when the carriage (33) comes into operative connection with the blocking lever (313; 323), the blocking lever (312; 323) from a blocking position (PI) to an unblocking position (P2 ) is rotated and the Haltemit tel (34) is thereby movable in at least one direction (B1; B2).

9. Length adjustment device (3) according to claim 8, characterized in that the blocking mechanisms (31; 32) are designed in one piece and are made of a fe-reducing material, in particular spring steel and / or hard rubber.

10. length adjustment device (3) according to claim 8 or 9, characterized in that the blocking lever (313; 323) are in their respective blocking position (PI) with the adjusting rail (30), in particular with the grid elements (301) of an adjusting rail (30) designed as a grid path, and in their respective unblocking position (P2) with the adjusting rail (30) , in particular with the grid elements (301) of an adjustment rail (30) designed as a grid track, are not in operative connection.

11 length adjustment device (3) according to any one of the preceding claims, characterized in that the drive (10) is a linear drive, in particular a spindle motor, a pneumatic cylinder, a hydraulic cylinder and / or a cable train.

12 finger movement splint (2) for carrying out a continuous, passive and / or actively-assisted movement of a finger and / or a thumb of a hand, comprising a length adjustment device (3) according to one of claims 1 to 11.

13. Therapy device (1) for performing a continuous, passive and / or actively-assisted movement of at least one finger and / or a thumb of a hand, comprising at least one finger movement splint (2) according to claim 12.

Method for adjusting the length of a finger movement splint (2) on a therapy device for performing a continuous, passive and / or actively-assisted movement of at least one finger and / or a thumb of a hand, in which

a connecting element (20a; 20b) of a finger movement rail (2) arranged on a holding means (34) with the aid of a drive (10) via a slide (33) along an adjustment rail (30) from an amplitude (A1) for a Therapy movement is moved into a first (A2) or second (A3) setting range;

wherein the carriage (33), when it is moved by means of the drive (10) in a first direction (B1) along the adjustment rail (30) in the first adjustment position rich (A2) is moved, upon contact with a first blocking mechanism (31) exerts a force on the first blocking mechanism (31), so that the first blocking mechanism (31) is released and the holding means (34) together with the finger movement rail (2) is moved by moving the slide (30) in the first direction (B1) and the slide (30), when it moves by means of the drive (10) in a second direction (B2) along the adjustment rail (30) in the second Setting range (A3) is moved, on contact with a second blocking mechanism (32) exerts a force on the second blocking mechanism (32) so that the second blocking mechanism (32) is released and the holding means (34) together with the finger movement rail (2 ) is moved by moving the carriage (33) in the second direction (B2).