Device for rehabilitation in an aquatic medium

Abstract

The present invention relates to a device for rehabilitation in an aquatic medium for a hand (11) and / or forearm (12) of a patient (1), which comprises a reservoir (2) for water (21), hydraulic means (3) for circulating the water (21), propelling means (4) for at least one pressurised jet of water (21) over the hand (11) and / or forearm (12), and actuation means (5) over the opening and / or closing of the hand (11), in order to design an aquatic rehabilitation device for patients (1) specifically suffering from pain or limited movement of said body parts.

Description

[0001] DESCRIPTION

[0002] AQUATIC REHABILITATION DEVICE

[0003] OBJECT OF THE INVENTION

[0004] This patent application seeks to protect an aquatic rehabilitation device for a patient's hand and / or forearm, comprising a water tank, hydraulic means for water circulation, means for propelling at least one pressurized water jet onto the hand and / or forearm, and means for actuating the opening and / or closing of the hand, incorporating significant innovations and advantages. The invention falls within the field of rehabilitation robotics and aquatic therapy.

[0005] BACKGROUND OF THE INVENTION

[0006] Aquatic rehabilitation or aquatic therapy is well-known for its use in a wide range of conditions where it is beneficial to reduce pain, muscle spasms, and edema, and to increase range of motion and muscle strength. Various robotic and mechatronic devices can be used for this purpose.

[0007] An illustrative document of what is known in the prior art would be that described in patent US2020094097A1, which discloses a semi-submerged floating striking exercise device with a striking portion that is filled with water, a floating portion at least partially above the striking portion, and the floating portion that is filled with air. The striking exercise device also includes at least one handle and / or a fastening device, at least one air inlet for inflating the floating portion and the portion above the water, and a water inlet for filling the striking portion with water.

[0008] On the other hand, it is known from the prior art what is described in patent US2011294625A1, which discloses an underwater treadmill and a method for selectively controlling the underwater treadmill with the integrated jet device for exercise and physiotherapy. More particularly, the present invention relates to an underwater treadmill system that includes a treadmill and an integrated jet device, and an exercise method involving an underwater treadmill. The jet

[0009] 1

[0010] REPLACEMENT SHEET (RULE 26) integrated is used as a massage and not as a sensorimotor stimulation system of the peripheral nervous system.

[0011] Also known from the prior art is the description in patent KR101556680B1, which discloses a parallel cable-driven robot for aquatic rehabilitation. The parallel cable-driven robot for aquatic rehabilitation comprises: a water tank for aquatic rehabilitation; a winch located on top of the tank for winding a cable; a pulley located inside the water tank to guide the cable wound by the winch in a specific direction; and an end effector located on a specific area of ​​the cable and attached to a region of a patient's body to perform aquatic rehabilitation.

[0012] Thus, in view of all the above, there is still a specific need to design an aquatic rehabilitation device for the hand and / or forearm of patients specifically suffering from pain or limitations in the movement of these parts of the body.

[0013] DESCRIPTION OF THE INVENTION

[0014] The present invention presents a rehabilitation device for the hand and / or forearm designed for use in aquatic environments. It comprises a water-filled tank that supports and contains the hand rehabilitation device, a micro-jet water stimulation system synchronized with hand movement, and a soft, water-actuated hand opening / closing system submerged in an aquatic environment.

[0015] More specifically, the aquatic rehabilitation device for a patient's hand and / or forearm comprises a water tank, hydraulic means for water circulation, means for propelling at least one pressurized water jet onto the hand and / or forearm, and means for actuating the opening and / or closing of the hand. The actuation and propulsion means are specifically designed for stimulating the patient's hand and / or forearm. The hydraulic means for water circulation are for filling and emptying the tank, as well as for water recirculation. These hydraulic means for water circulation are connected to the means for propelling at least one water jet. The result is a device that efficiently circulates water among the various components while also redirecting it.

[0016] 2

[0017] REPLACEMENT SHEET (RULE 26) controlled towards the specific muscles and joints of the hand and / or forearm for better rehabilitation.

[0018] Preferably, the aquatic rehabilitation device comprises first means for securing the forearm in the water tank, comprising at least one first support, at least one first clamp configured to be attached to the first support, and at least one means for propelling a pressurized water jet onto the forearm. In this way, and with the controlled water pressure applied to specific points of the patient's forearm, a gradual mobilization effect, and therefore rehabilitation, is achieved. Optionally, the device comprises a plurality of water jet propulsion means for each first clamp, strategically located and focused on specific muscles and joints. Additionally, the device may comprise a plurality of first clamps for a more intensive rehabilitation effect and / or over a larger area.Furthermore, each of the first clamps can comprise one or more connections for each of the water jet propulsion means, and its design can be adapted to the special characteristics of each user.

[0019] Additionally, the aquatic rehabilitation device comprises means for attaching the first clamp to the first support, where the fastening means are at least one magnet, so that the coupling is simple, while the proper orientation and fit is achieved by itself when the components are brought close together.

[0020] In a preferred embodiment of the invention, the aquatic rehabilitation device for a patient's hand and / or forearm comprises a second means for securing the hand in the water tank, comprising at least one second support, at least one second clamp configured to be attached to the second support, and at least one means for propelling a pressurized water jet onto the hand. This achieves targeted rehabilitation of an important part of the body, contributing to the patient's autonomy and quality of life. It should be noted that the at least one means for propelling the water jet must produce a stimulating effect synchronized with the opening and / or closing of the hand.

[0021] According to another aspect of the invention, the means of actuation of the rehabilitation device comprise an elastic buoy configured to be in contact with the palm and / or at least one finger of the hand, and comprise at least a first inlet and at least a first outlet.

[0022] 3

[0023] REPLACEMENT SHEET (RULE 26) Water outlet. This first water inlet is for the controlled filling of the float, and this first water outlet is for the controlled emptying of the float. Thus, the elastic float is filled with water or emptied to assist its opening and closing movement.

[0024] Additionally, the means of operation comprise a third support configured to be in contact with the palm of the hand, comprising at least a second water inlet and means for propelling a jet of pressurized water onto the palm of the hand, for the purpose of rehabilitating said part of the body, which specifically produces the opening and closing movements of the hand and fingers.

[0025] It should be noted that the buoy is attached to the third support, so that the functionality and the rehabilitative effect of both elements complement each other in order to achieve greater joint effectiveness.

[0026] More specifically, the buoy comprises at least one housing for at least one finger of the patient's hand, in order to be able to transmit the movement to the phalanges of the patient's hand.

[0027] According to a preferred embodiment of the invention, the actuating means comprise at least one first sensor for measuring the pressure exerted by the patient's hand, which allows for measuring the interaction force between the subject and the buoy. Optionally, the first sensor is located in the housing for at least one finger. Alternatively, the pressure sensors are located inside the buoy, either in a mesh arrangement or individually, so that they measure the patient's force when the rehabilitation device is in active mode.

[0028] It should be noted that the hydraulic means for water circulation comprise water recirculation means, means for filling the float with water, and / or means for adjusting the water pressure in the pumping system. The water recirculation means are responsible for filling, emptying, and cleaning the tank, as well as adjusting the water temperature. The means for filling the float with water regulates its firmness to the touch, and the means for adjusting the water pressure regulates its output force in the pumping system.

[0029] 4

[0030] REPLACEMENT SHEET (RULE 26) Furthermore, the water recirculation means and / or the water filling means of the float comprise at least one element of the group of a hydraulic flow pump, a particle filter, a tank, a valve, a solenoid valve and a water heater, their respective functions being to boost the water flow, retain any circulating dirt particles, store a volume of water in reserve, open or close the passage of the water flow, optionally through an electrical signal, and an element to increase the water temperature, for the purpose of greater comfort of the patient undergoing rehabilitation.

[0031] Additionally, the means for adjusting the water pressure in the driving means comprises at least one element of a hydraulic flow pump group with a frequency converter, a pressure transducer and a solenoid valve, their respective functions being to drive the water flow, being able to vary the frequency of its variation in terms of flow rate and / or driving force, the detection of the pressure level exerted on the user, and the opening or closing of the passage of the water flow, optionally through an electrical signal.

[0032] According to another aspect of the invention, the tank comprises height adjustment means, so that its position is adaptable to the physical build of the patient, for greater comfort.

[0033] Additionally, the tank includes at least one second maximum water level sensor to prevent it from overflowing.

[0034] On the other hand, the tank includes at least one third minimum water level sensor, in order to prevent the flow pumps of the hydraulic media from running dry, which would damage them.

[0035] The accompanying drawings show, by way of non-limiting example, an aquatic rehabilitation device, constructed according to the invention. Other features and advantages of said aquatic rehabilitation device, the subject of the present invention, will become apparent from the description of a preferred, but not exclusive, embodiment, which is illustrated by way of non-limiting example in the accompanying drawings.

[0036] 5

[0037] REPLACEMENT SHEET (RULE 26) BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1- Perspective view of the aquatic rehabilitation device, according to the present invention;

[0039] Figure 2- Side view of the aquatic rehabilitation device, according to the present invention;

[0040] Figure 3- Perspective view of the aquatic rehabilitation device, according to the present invention;

[0041] Figure 4 - Perspective view of the first means of fixing, according to the present invention;

[0042] Figure 5A- Partial perspective view of the first fixing means, according to the present invention;

[0043] Figure 5B - Partial cross-sectional view of the first fastening means, according to the present invention;

[0044] Figure 5C - Partial side view of the first fastening means, according to the present invention;

[0045] Figure 6 - Perspective view of the second means of fixing, according to the present invention;

[0046] Figure 7 - Perspective view of the means of operation, according to the present invention;

[0047] Figure 8A- Cross-sectional view of the actuating means, according to the present invention;

[0048] Figure 8B- Cross-sectional view of the means of actuation with the hand and forearm of a patient, according to the present invention;

[0049] Figure 9A- Cross-sectional view of the actuating means in a first relaxed position, according to the present invention;

[0050] Figure 9B- Cross-sectional view of the actuating means in a second compressed position, according to the present invention;

[0051] Figure 10A- Partial perspective view of the second means of fixing, according to the present invention;

[0052] Figure 10B - Partial cross-sectional view of the second fastening means, according to the present invention;

[0053] Figure 10C - Partial side view of the second means of fixing, according to the present invention;

[0054] Figure 11- Schematic view of the elements that make up the aquatic rehabilitation device, according to the present invention;

[0055] 6

[0056] REPLACEMENT SHEET (RULE 26) DESCRIPTION OF A PREFERRED EMBODIMENT

[0057] In view of the aforementioned figures and in accordance with the numbering adopted, an example of a preferred embodiment of the invention can be observed, comprising the parts and elements indicated and described in detail below.

[0058] Figure 1 shows a perspective view of the aquatic rehabilitation device for the hand (11) and / or forearm (12) of a patient (1), including a water tank (2) and actuating means (5) for the patient (1), whose movement is restrained by first fixation means (6) and second fixation means (7). In short, the rehabilitation device stimulates the hand (11) and / or forearm (12) of the patient (1), while simultaneously producing opening and closing movements of the hand (11) based on a soft system in the form of a buoy (51) or balloon to which the fingers (11b) of the patient (1) are attached.

[0059] Figure 2 shows a side view of the aquatic rehabilitation device, with a water tank (2) (21) and height regulation means (22). It includes hydraulic means (3), propulsion means (4), and the position of the buoy (51) and, in particular, the housing (56) for at least one finger (11b) can be seen. Stimulation is achieved via the connecting tubes by filling or emptying the water (21) in the balloon or buoy (51), which produces the opening and closing movements of the hand (11).

[0060] Figure 3 shows a perspective view of the aquatic rehabilitation device, including a water tank (2) (21), height regulation means (22), and hydraulic means (3) for channeling and moving the water (21), comprising recirculation means (31), filling means (32), and pressure adjustment means (33). Inside the water tank (2) (21), first fixing means (6) are visible.

[0061] Figure 4 shows a perspective view of the first fastening means (6), which include water propulsion means (4) (21) in the first clamp (62), which is fixed to the first support (61) by means of fastening means (63), which may specifically be a magnet (63a). It may also include

[0062] 7

[0063] REPLACEMENT SHEET (RULE 26) a plurality of propulsion means (4) strategically located in a plurality of clamps (62), so that they act in a synchronized manner with the opening and closing system of the hand. Said clamps (62) have one or more connections for the water propulsion means (4) (21) and designs can be adapted to the special characteristics of each patient (1).

[0064] Figure 5A shows a partial perspective view of the first fixing means (6), including the drive means (4) in a first clamp (62).

[0065] Figure 5B shows a partial cross-sectional view of the first fixing means (6), including the drive means (4) in the first clamp (62).

[0066] Figure 5C shows a partial side view of the first means of fixation

[0067] (6), including the drive means (4) in the first clamp (62).

[0068] Figure 6 shows a perspective view of the second means of fixing

[0069] (7), including a second support (71) and a second clamp (72) with drive means (4), so that the palm (11a) and forearm (12) are secured. On the other hand, the actuation means (5) includes a float (51) with its corresponding housing (56) for at least one finger (11b).

[0070] Figure 7 shows a perspective view of the actuating means (5), including a first inlet (52), a first outlet (53), and a second inlet (55) of water for better stimulation of the patient (1). It also comprises a third support (54), with propulsion means (4), attached to a buoy (51), which includes a housing (56) for at least one finger (11b).

[0071] Thus, the rehabilitation device stimulates the dorsal and palmar surfaces of the hand (11). The water propulsion means (4) (21), by means of a first microjet, for stimulating the dorsal surface of the hand (11), are located on a second clamp (72). A second microjet for stimulating the palmar surface of the hand (11) is located in the hand support (11) of the buoy (51), which is in contact with the palmar surface of the hand. The soft, water-actuated hand opening and / or closing system (11) (21) consists of the elastic buoy (51), which is filled with water (21) or emptied to assist the opening and closing movement. As mentioned, the buoy

[0072] 8

[0073] REPLACEMENT SHEET (RULE 26) (51) elastic has on its surface means for the accommodation (56) of the fingers (11b) of the patient (1), and thereby transmit the movement to the phalanges of his hand (11). And said accommodation (56) of the fingers (11 b) includes at least a first pressure sensor (57) that allows measuring the force of interaction between the subject or patient (1) and the buoy (51).

[0074] Figure 8A shows a cross-sectional view of the actuating means (5), showing the position of the propulsion means (4) on the third support (54), as well as the second water inlet (55) (21), all attached to the buoy (51), which has a housing (56) and a first sensor (57)

[0075] Figure 8B shows a cross-sectional view of the actuating means (5) with the hand (11) and forearm (12) of a patient (1), placed in position on the third support (54) with its second water inlet (55) (21), attached to the buoy (51).

[0076] Figure 9A shows a cross-sectional view of the actuating means (5) in a relaxed position, with both the hand (11) and forearm (12) in place, so that the float (51) is at rest, which is detected by the first sensor (57). The first inlet (52), the first outlet (53) for controlled filling and emptying of the float (51), and the second inlet (55), located below the second clamp (72), are visible from the rear at the same height.

[0077] Figure 9B shows a cross-sectional view of the actuating means (5) in a second compressed position, of the hand (11), with at least one finger (11 b) pressing on the buoy (51), and perhaps some effort by the forearm (12), this movement being detectable by the first sensor (57).

[0078] Thus, the rehabilitation device can operate passively or actively: passively, the buoy (51) fills or empties with water (21), and this same movement of the buoy (51) is responsible for moving the phalanges of the patient's fingers (11b), thus allowing for a dynamic, harmonious, and constant movement. Actively, the buoy (51) is filled with water (21) and the patient (1) squeezes it. This movement is registered by the first pressure sensor (57) inside the buoy (51), and similarly, when the buoy (51) is empty and the patient (1) pulls, this movement is also registered by the first pressure sensor (57).

[0079] 9

[0080] REPLACEMENT SHEET (RULE 26) In Figure 10A, a partial perspective view of the second fastening means (7) can be seen, including drive means (4) in a second clamp (72).

[0081] Figure 10B shows a partial cross-sectional view of the second fixing means (7), including drive means (4) in a second clamp (72).

[0082] Figure 10C shows a partial side view of the second fixing means (7), including drive means (4) in a second clamp (72).

[0083] Figure 11 shows a schematic view of the components of the aquatic rehabilitation device, including a tank (2) with a second sensor (23) and a third sensor (24) to measure its water level (21), as well as actuating means (5). Hydraulic components (3) are present, specifically a flow pump (3a) connected to a filter (3b) and a reservoir (3c), and also to a valve (3d), which, depending on its position, may be a solenoid valve (3e). It may also include a heater (3f), a frequency converter (3g), and a pressure transducer (3h).

[0084] More specifically, as shown in Figures 1 and 11, the aquatic rehabilitation device for a patient's hand (11) and / or forearm (12) (1) comprises a water tank (2) (21), hydraulic means (3) for circulating the water (21), means for propelling (4) at least one jet of water (21) under pressure onto the hand (11) and / or forearm (12), and means for actuating (5) the opening and / or closing of the hand (11).

[0085] Preferably, as shown in Figures 1 and 4, the aquatic rehabilitation device for a patient's hand (11) and / or forearm (12) (1) comprises first means for fixing the forearm (12) in the water tank (2) (21), comprising at least a first support (61), at least a first clamp (62) configured to be fixed to the first support (61), and at least one means for propelling a jet of water (21) under pressure onto the forearm (12).

[0086] In more detail, as shown in Figure 4, the aquatic rehabilitation device for a hand (11) and / or forearm (12) of a patient (1) comprises fastening means (63) from the first clamp (62) to the first support (61), wherein the fastening means (63) are at least one magnet (63a), said magnet (63a) preferably being neodymium.

[0087] 10

[0088] REPLACEMENT SHEET (RULE 26) In a preferred embodiment of the invention, as shown in Figure 6, the aquatic rehabilitation device comprises second means for securing the hand (11) in the water tank (2) (21), comprising at least one second support (71), at least one second clamp (72) configured to be attached to the second support (71), and at least one means for propelling (4) a pressurized jet of water (21) onto the hand (11). It should be noted that the stimulation of the dorsal part of the hand (11) is located on a second clamp (72) and directed toward the dorsal part of the hand (11).

[0089] It should be mentioned that, as can be seen in Figures 7 and 8B, the actuating means (5) comprise an elastic buoy (51) configured to be in contact with the palm (11a) and / or at least one finger (11b) of the hand (11), and comprise at least a first inlet (52) and at least a first outlet (53) of water (21).

[0090] Additionally, as shown in Figures 7 and 8B, the actuating means (5) comprise a third support (54) configured to be in contact with the palm (11a) of the hand (11), comprising at least a second water inlet (55) (21) and means for propelling (4) a jet of water (21) under pressure onto the palm (11a) of the hand (11).

[0091] According to a preferred embodiment of the invention, as shown in Figures 7 and 8B, the buoy (51) is attached to the third support (54). And attached and at least partially surrounding it.

[0092] Additionally, as shown in Figures 7 and 8A, the buoy (51) comprises at least one housing (56) for at least one finger (11 b) of the hand (11).

[0093] More specifically, as shown in Figures 9A and 9B, the means of actuation (5) comprise at least a first sensor (57) of the pressure exerted by the hand (11) of the patient (1).

[0094] It should be noted that, as can be seen in Figures 3 and 11, the hydraulic means (3) for circulating water (21) comprise means for recirculating (31) water (21), means for filling (32) water (21) of the float (51) and / or means for adjusting the pressure (33) of the water (21) in the propulsion means (4).

[0095] 11

[0096] REPLACEMENT SHEET (RULE 26) On the other hand, as can be seen in Figure 11, the recirculation means (31) of the water (21) and / or the filling means (32) of the water (21) of the float (51) comprise at least one of the group of a hydraulic flow pump (3a), a particle filter (3b), a tank (3c), a valve (3d), a solenoid valve (3e) and a water heater (3f) (21).

[0097] Additionally, as shown in Figure 11, the means for adjusting the water pressure (33) (21) in the drive means (4) comprises at least one of the group of a hydraulic flow pump (3a) with frequency converter (3g), a pressure transducer (3h) and a solenoid valve (3e).

[0098] According to another aspect of the invention, as shown in Figures 2 and 3, the tank (2) comprises height regulation means (22).

[0099] Optionally, as shown in Figure 11, the tank (2) comprises at least a second maximum water level sensor (21) (23).

[0100] Additionally, as shown in Figure 11, the tank (2) comprises at least a third minimum water level sensor (21) (24).

[0101] The details, shapes, dimensions and other accessory elements, as well as the components used in the implementation of the aquatic rehabilitation device, may be conveniently replaced by others that are technically equivalent, and do not depart from the essence of the invention or the scope defined by the claims included below the following list.

[0102] List of numerical references:

[0103] 1 patient

[0104] 11 hand

[0105] 11th palm

[0106] 11 b finger

[0107] 12 forearm

[0108] 2 tank

[0109] 21 water

[0110] 22 means of regulation

[0111] 12

[0112] REPLACEMENT SHEET (RULE 26) 23 second sensor

[0113] 24 third sensor

[0114] 3 hydraulic means

[0115] 31 recirculation media

[0116] 32 filling media

[0117] 33 means of pressure adjustment

[0118] 3rd flow pump

[0119] 3b filter

[0120] 3c deposit

[0121] 3D valve

[0122] 3e solenoid valve

[0123] 3f heater

[0124] 3G frequency inverter

[0125] 3h pressure transducer

[0126] 4 means of propulsion

[0127] 5 means of action

[0128] 51 buoy

[0129] 52 first entry

[0130] 53 first exit

[0131] 54 third support

[0132] 55 second entry

[0133] 56 accommodation

[0134] 57 first sensor

[0135] First 6 means of fixation

[0136] 61 first support

[0137] 62 first clamp

[0138] 63 fastening devices

[0139] 63a magnet

[0140] 7 seconds average fixation time

[0141] 71 second support

[0142] 72 second clamp

[0143] REPLACEMENT SHEET (RULE 26)

Claims

CLAIMS 1- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), characterized in that it comprises a water tank (2) (21), hydraulic means (3) for circulating the water (21), means for propelling (4) at least one jet of water (21) under pressure on the hand (11) and / or the forearm (12), and means for actuating (5) the opening and / or closing of the hand (11). 2- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to claim 1, characterized in that it comprises first means for fixing (6) the forearm (12) in the water tank (2) (21), comprising at least a first support (61), at least a first clamp (62) configured to be fixed to the first support (61), and at least one means for propelling a jet of water (21) under pressure onto the forearm (12). 3- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to claim 2, characterized in that it comprises fastening means (63) of the first clamp (62) to the first support (61), wherein the fastening means (63) are at least a magnet (63a). 4- Aquatic rehabilitation device for a hand (11) and / or forearm (12) of a patient (1), according to any of the preceding claims, characterized in that it comprises second means for fixing the hand (11) in the water tank (2) (21), comprising at least a second support (71), at least a second clamp (72) configured to be fixed to the second support (71), and at least a means for propelling (4) a jet of water (21) under pressure onto the hand (11). 5- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of the preceding claims, characterized in that the actuating means (5) comprise an elastic buoy (51) configured to be in contact with the palm (11a) and / or at least one finger (11b) of the hand (11), and comprise at least a first inlet (52) and at least a first outlet (53) of water (21). 6- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to claim 5, characterized in that the means of actuation 14 REPLACEMENT SHEET (RULE 26) (5) comprise a third support (54) configured to be in contact with the palm (11a) of the hand (11), comprising at least a second water inlet (55) (21) and means for propelling (4) a jet of water (21) under pressure onto the palm (11a) of the hand (11). 7- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to claim 6, characterized in that the buoy (51) is attached to the third support (54). 8- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of claims 5 to 7, characterized in that the buoy (51) comprises at least one housing (56) for at least one finger (11 b) of the hand (11). 9- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of claims 5 to 8, characterized in that the actuating means (5) comprise at least a first sensor (57) of the pressure exerted by the hand (11) of the patient (1). 10- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of the preceding claims, characterized in that the hydraulic means (3) for water circulation (21) comprise water recirculation means (31), water filling means (32) of the buoy (51) and / or water pressure adjustment means (33) in the propulsion means (4). 11- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to claim 10, characterized in that the water recirculation means (31) and / or the water filling means (32) of the buoy (51) comprise at least one of the group of a hydraulic flow pump (3a), a particle filter (3b), a reservoir (3c), a valve (3d), a solenoid valve (3e) and a water heater (3f) (21). 12- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of claims 10 to 11, characterized in that the pressure adjustment means (33) of the water (21) in the propulsion means (4) 15 REPLACEMENT SHEET (RULE 26) It comprises at least one of the group of a hydraulic flow pump (3a) with frequency converter (3g), a pressure transducer (3h) and a solenoid valve (3e). 13- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of the preceding claims, characterized in that the tank (2) comprises height regulation means (22). 14- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of the preceding claims, characterized in that the tank (2) comprises at least a second sensor (23) for maximum water level (21). 15- Aquatic rehabilitation device for a hand (11) and / or a forearm (12) of a patient (1), according to any of the preceding claims, characterized in that the tank (2) comprises at least a third sensor (24) for minimum water level (21). 16 REPLACEMENT SHEET (RULE 26)

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