RU216612U1 - CLAMP MECHANISM WITH A HINGE FOR FASTENING THE EXOSKELETON OF THE HAND - Google Patents

Abstract

The utility model relates to medicine. The simulator for the rehabilitation of motor activity of the arm contains an exoskeleton of the patient's hand, a forearm lodge with an armrest and a fastening device that contains a hinge element, a ball element, a socket for a ball element with a cylindrical support for attaching to a rolling rack and a latch designed to ensure the immobility of the ball element , and a clamp element for attaching to the tabletop. The cylindrical support is movable in the vertical direction and fixed relative to the clamp element, and the forearm lodgement with the armrest is cantilevered so that the fixed part of the lodgement is placed on the side of the spherical element with the possibility of forming a fulcrum and rotation point for the wrist joint of the patient's hand. The technical result consists in the ability to balance the design of the exoskeleton of the hand with the armrest at a distance from the elbow to the distal phalanges of the fingers and to ensure anatomical. 5 ill.

Description

The utility model relates to the field of medicine and medical technology and can be used to treat post-stroke, post-traumatic patients and children with cerebral palsy.

There are various exoskeletons intended for the rehabilitation of neurological patients (see Klochkov A.S., Chernikova L.A. Robotic and mechanotherapeutic devices for restoring hand function after a stroke // Russian Medical Journal. 2014. No. 22. P. 1589 URL: https ://www.rmj.ru/articles/nevrologiya/Robotizirovannye_i_mehanoterapevticheskie_ustroystva_dlya_vosstanovleniya_funkcii_ruki_posle_insulyta/ Existing robotic technologies allow for the most effective kinesitherapy of almost all isolated and complex hand movements, including targeted ones. Patients have the opportunity to continue the course of active comprehensive rehabilitation at home after discharge from the hospital, which can significantly speed up the recovery of motor function of the hand.

Known simulator "ArmeoPower", which is a robotic exoskeleton with a height-adjustable electric lifting column that provides arm support. The "ArmeoPower" simulator allows training the motor skills of the patient's upper limbs using a computer monitor and a virtual game space with feedback on the movements performed by the patient (http://medkontakt.spb.ru/catalog/massage/detenzorterapiya/1048/). The disadvantage of this simulator is the impossibility of using it at home due to the large dimensions of the trolley, lifting column and arm exoskeleton.

Also known is the rehabilitation simulator "ArmeoSpring", designed to restore the motor functions of the upper limbs in patients after a stroke, with injuries of the brain and spinal cord and other neurological disorders of the upper limbs. It is an ergonomic orthosis that is attached to the arm and can support its weight. (http://medkontakt.spb.ru/catalog/reabilitation/vosstanovlenie-funktsiy-verkhnikh-konechnostey/1047/). The disadvantage is a significant size, making it difficult for patients to use it during classes at home.

A joystick simulator is known for training in the development of impaired hand movements in patients with a neurological clinic (RU 167667 U1, Selyavko L.E., 01/10/2017), containing a base on which a vertical cylindrical plastic handle is fixed by means of a ball joint, to the upper part of which is rigidly a metal bracket with a horizontal handle is attached. To securely fix the device on the desktop, a base with a clamp can be used. The patient's hand, on the restoration of the movements of which the work will be carried out, is installed on a vertical or horizontal handle so that the hand is located between the handle and the holder tape, which fixes the patient's hand. The disadvantage of this device is that the design does not allow changing its position relative to the table with subsequent reliable fixation of this position and does not provide a full-fledged balanced support for the patient's hand involved in the rehabilitation procedure, depriving it of a comfortable anatomical position.

Closest to the patentable is the fastening of the pronation-supination device of the hand (RU 187968 U1, Neurobotics LLC, 03/26/2019). The device includes a forearm holder, a static forearm cradle and a rotatable hand cradle, the rotation of which performs pronation and supination of the hand during the rehabilitation procedure. The forearm holder, on which the static forearm cradle is rigidly fixed, is made in a shape that takes into account the anthropometric features of the structure of the human hand and is connected to the rotary cradle of the hand by an end movable lock connection, and the ends of the cradle at the junction are made congruent to each other in an arcuate shape, while the rotatable cradle is provided with an arcuate rotary guide having a groove with a guide element placed in the groove and rigidly fixed on the forearm holder. The disadvantage of this device is the location of the support of the forearm holder in the area of the elbow joint, which makes it necessary for the patient to fully extend the arms in the elbow joint and raise them in front of him to the level of the forearm lodgement, which is impossible for many post-stroke patients. Also, the location of the support in the area of the elbow joint excessively loads the load-bearing structural elements of the device in the area of the forearm and hand.

The problem to be solved by the utility model is to ensure reliable and comfortable for the patient fixation of the exoskeleton of the hand on the table, any other similar surface or small-sized rolling stand with the ability to adjust the position of the exoskeleton in accordance with the features of the rehabilitation procedure.

This problem is solved through the use of a fastening mechanism containing clamp and ball hinge elements. The hinge element is located in the area of the wrist joint, which makes it possible to balance the structure at a distance from the elbow to the distal phalanges of the fingers and provides anatomical and easy adjustment of the position of the exoskeleton of the hand.

The patented simulator for the rehabilitation of the motor activity of the hand contains the exoskeleton of the patient's hand, the forearm lodgement with the armrest and the means of fastening to the support.

The difference is as follows, the attachment means contains an adapter with a bearing and supporting parts for attaching the exoskeleton, a hinge element that includes a contact pad, a ball element with a bolt for attaching the contact pad, a socket for a ball element with a cylindrical support for attaching to a rolling rack and a latch, made with the possibility of ensuring the immobility of the ball element, and a clamping element for attaching to the tabletop, which includes a support frame, a frame clamp and a screw with a handle, while the said cylindrical support is movable in the vertical direction and fixed in the frame clamp relative to the clamping element, supporting part of the adapter is connected to the contact pad of the hinged element, and the forearm lodgment with the armrest is cantilevered so that the fixed part of the lodgment is placed on the side of the ball element with the possibility of forming a fulcrum and rotation point for the wrist joint of the hand yenta.

EFFECT: technical result consists in the possibility to balance the design of the exoskeleton of the hand with the armrest at a distance from the elbow to the distal phalanges of the fingers and to ensure anatomy. This is achieved due to the use in the design of the developed fastening mechanism of a spherical hinge element located in the area of the patient's wrist joint.

The essence of the utility model is illustrated in the drawings, where:

fig. 1 - general view of the exoskeleton of the hand with the mechanism for fastening to the table and a small-sized rolling stand;

fig. 2 - exoskeleton of the hand with a mechanism for fastening to the table, side view;

fig. 3 - design of the clamping mechanism with a ball joint for fastening the exoskeleton of the hand;

fig. 4 - exoskeleton of the hand with hinged fastening to the table;

fig. 5 - exoskeleton of the hand with a hinged fastening to a rolling small stand.

The positions in the drawings indicate the following elements: the exoskeleton 1 of the hand, the adapter 2, consisting of the upper bearing 21 and lower support 22 parts, the hinge element 3, consisting of the pad 31, the ball element 32 with a bolt 321 (1/4'') for fastening of the contact pad 31, hinge socket 33 with a cylindrical support 35 and latch 34, clamping element 41, support frame 42, frame clamp 43, screw 44 with a handle and a flexible nozzle, armrest 5 with side stops, small-sized rolling stand 6, table edge 7 .

The clamp mechanism with a hinge for fastening the exoskeleton of the hand is a mechanical product containing a clamp and a ball-and-socket hinge elements that provide reliable fixation of the exoskeleton on the table, any other similar surface or a small-sized rolling stand, simple and anatomical fixation of the exoskeleton in different positions, comfortable position of the patient's hand .

Fixation of the structure on the table is provided by tightening the screw 44 with the handle until the flexible nozzle tightly contacts the bottom surface of the table. The hinge socket 33 is installed with a cylindrical support 35 down into the frame retainer 43 at the desired height along the Y axis and is fixed with fixing screws.

The fixation of the structure on the rolling small rack is ensured by tightly screwing the cylindrical support 35 of the hinge element 3 to the upper part of the rolling small rack 6 along the thread with fixation.

To individually adjust the position of the exoskeleton of the hand - its inclination in the directions of the X and Z axes, rotation around the Y axis - the latch 34 is unscrewed, releasing the ball element 32, and the exoskeleton 1, connected to the attachment mechanism by the adapter 2, moves to the desired position. Next, the latch 34 is tightened to ensure the immobility of the ball element 32.

Due to the location of the spherical hinged element 3 near the wrist joint of the patient's hand, the exoskeleton position adjustment is performed as anatomically as possible, the patient's hand is always in a comfortable natural position. It also ensures the balance of the design of the exoskeleton 1 with the armrest 5 and the fastening mechanism at a distance from the patient's elbow to the distal phalanges of the fingers, which makes the position of the exoskeleton more stable.

Thanks to this design, the clamping mechanism with a ball joint for fastening the exoskeleton of the hand provides anatomical and easy adjustment of the position of the exoskeleton, position stability and reliable fixation.

Thus, the patented solution makes it possible to carry out rehabilitation procedures using an exoskeleton mounted on a table (Fig. 4), any other similar surface or a small-sized rolling stand (Fig. 5), in different positions while maintaining a comfortable position of the patient's hands.

Claims (1)

A simulator for the rehabilitation of motor activity of the hand, containing an exoskeleton of the patient's hand, a forearm lodge with an armrest and a fastening means, characterized in that the fastening means contains an adapter with a carrier and supporting parts for fastening the exoskeleton, a hinge element that includes a contact pad, a ball element with a bolt for fastening the contact pad, a socket for a ball element with a cylindrical support for attaching to a rolling stand and a latch designed to ensure the immobility of the ball element, and a clamping element for attaching to the tabletop, which includes a support frame, a frame latch and a screw with a handle, while said cylindrical support is movable in the vertical direction and fixed in the frame retainer relative to the clamp element, the supporting part of the adapter is connected to the contact pad of the hinge element, and the forearm lodgment with the armrest is cantilevered so that it closes the fixed part of the lodgment is placed on the side of the spherical element with the possibility of forming a fulcrum and rotation point for the wrist joint of the patient's hand.

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