RU2338504C1 - Device for working out movement in joints - Google Patents

Abstract

FIELD: medical equipment; traumatology.

SUBSTANCE: device for working out of movements in joints includes elements of fastening of a joint and a bending-unbending mechanism. The bending-unbending mechanism consists of two elements located in a plane of a joint movement. The elements are connected among themselves with rotation possibility. The bending-unbending mechanism and an inflatable element are concluded in a pneumoelement in such a manner that the inflatable element settles down along an external surface of the bending-unbending mechanism and is connected by means of a flexible hose to the pneumatic system of the control block. The control block has the software. There is a possibility of realisation active-passive, bending-unbending movements in a joint with maintenance of automatic control with change of effort of an angle deviation of one part of a joint concerning another, amplitude of movements in the damaged joints, number of cycles and quantity of steps to one cycle with set time intervals that allows to make aftertreatment process as much as possible controlled and providing an individual approach.

EFFECT: increase of efficiency of treatment process; reduction of dimensions and device mass; increase of reliability and possibility of use of the device the patient in house conditions.

4 cl, 1 dwg

Description

The invention relates to medicine, namely to traumatology and orthopedics, and can be used in the development of movements in the elbow, knee and other joints.

A device for developing movements in the joints is known, comprising means for attaching to the shoulder and forearm, pivotally connected to each other, and a folding-extension mechanism made in the form of levers pivotally connected to the drive and at an angle with each other. The drive is an electric drive with a crank mechanism (patent RU No. 2214210 IPC А61Н 1/02. "Device for the development of movements in the joints", publ. 20.10.2003).

A device for straightening and facilitating the verticalization of patients is known, containing a support element, fixing elements and elastic traction with clamps. The device is also equipped with a cover-cord, made in the form of a tire with pneumatic valves. The fixing elements are made in the form of cuffs and are fixed on the sides of the cover-cord (patent RU No. 2170566, IPC А61Н 3/00. "A method for straightening and facilitating the verticalization of patients and a device for its implementation", published on July 20, 2001).

Known pneumatic massager "Lympha-E" (see the price list of the company LLC Neva-Trade http / neva-trade.ru / metodor / fizio / mehterapia / Limfa-e.html) containing cuffs connected via a pneumatic system to the control unit . Cuffs are worn on the arm or leg and are used to massage. The device operates in two modes. In the first mode, an “ascending traveling wave with memory”, i.e. when the cuff chambers are filled sequentially, pushing blood to the body and heart. After filling the last chamber, air is discharged from all chambers simultaneously. Then the cycle repeats. In the second mode, an “ascending traveling wave”, i.e. when the chambers are filled sequentially, the filling of each subsequent chamber occurs simultaneously with the release of pressure in the previous one. The switching time from one camera to another is set by the time sensor.

The disadvantages of these devices include the inability to automatically control forced flexion-extension of the joints.

Known rotary device for the development of movements in the elbow, knee and other joints. The device comprises a support mounted on one part of the joint, three articulated joints, an additional support with an attachment element to the other part of the joint, a bending-bending mechanism consisting of two elements located in the plane of rotation of the joint, interconnected to rotate and translate relative to each other friend (patent RU No. 2139027, IPC А61Н 1/02, "Rotary device", publ. 10.10.1999).

The above device is the closest in technical essence and therefore is selected as a prototype.

The disadvantage of this device is the inability to automatically control the change in the effort of the angular deviation of one part of the joint relative to another.

The technical result of the claimed device is the possibility of active-passive, flexion-extensor movements in the joint with automatic control of the change in the effort of the angular deviation of one part of the joint relative to another, the amplitude of movements in the affected joints, the number of cycles and the number of steps in one cycle, with specified time intervals that allows you to make the rehabilitation process as manageable and providing an individual approach, increasing the efficiency of cession of treatment, as well as reduced size, weight, increased reliability and the ability to use by the patient at home.

The specified technical result is achieved by the fact that in the device comprising a bending-bending mechanism, consisting of two elements located in the joint plane of rotation of the joint, rotatably connected, and fastening elements of the joint, it is proposed to install an inflatable element on the outer surface of the bending-bending mechanism, which through a flexible hose is connected to the pneumatic system of the control unit with software, and bend the bending mechanism with an inflatable element in a pneumatic element. In this case, the bending-bending mechanism can be made in the form of two lodgements, interconnected to rotate relative to each other, and contain a spring element that is fixed to the outer ends of the lodgements, mounted with rotation.

Installing a bending-bending mechanism in a pneumatic element and connecting it to a control unit with software made it possible to automatically control the change in the effort of angular deviation of one part of the joint relative to the other, the amplitude of movements in the joint, with setting the required number of cycles and steps in one cycle with the required time intervals, which allows you to choose an individual, most effective treatment regimen for the patient.

A control unit with software based on a microprocessor control system ensures the operation of the device both in manual and automatic mode according to a given program, which as a result makes it possible to make the rehabilitation process as manageable as possible.

The use of a pneumatic element also allowed to reduce the number of parts that ensure the operability of the device, due to which the overall dimensions, weight and reliability decreased, because the design lacks complex parts and assemblies.

The introduction of a springing element into the device with the possibility of its adjustment by changing the pre-tensioning force made it possible to create a return bending force, which is required to perform cyclic actions during the joint flexion-extension in patients with significant damage to the motor function.

The drawing shows the design of the claimed device.

A device for developing movements in the joints consists of a control unit 1 with a pneumatic system 2, a pneumatic element 3, an inflatable element 6 located on the outer surface of the lodges 4 and 5, and connected via a flexible hose 7 to the pneumatic system 2 of the control unit 1, a spring element 10 fixed to extreme outer ends of the air element. The lodgements 4 and 5 have a common axis of rotation 9. The latches 8 are made in the form of “Velcro” belts and are fixed on the lodges 4 and 5. The substrates 11 are made using foam rubber for the convenience and elimination of possible limb damage by the latches 8 and are fixed on the pneumatic element using “ Velcro. "

The pneumatic element 3 is a cover made of strong fabric, in which the lodgments 4 and 5 are enclosed with an axis of rotation 9, and equipped with quick-release latches (fastening straps) 8 with “Velcro”, allowing you to easily and quickly fix the pneumatic element on the limbs (arm or leg) with various coverage, which makes it universal. An inflatable element 6 is placed in a special compartment of the cover of the pneumatic element 3 so that it is located along the outer surface of both lodgements and has a fitting for connecting the flexible hose 7 and, accordingly, connecting to the pneumatic system 2 of the control unit.

The pneumatic element 3 is fixed on the limb in such a way that one part is attached to the forearm (thigh), and the other, respectively, below the elbow (knee), while the elbow (knee) joint is located in the region of the axis of rotation 9.

The control unit 1 is designed to control the pneumatic element 3 by creating excess air pressure in the inflatable element 6 and venting the pressure after a predetermined time.

The control unit includes a pneumatic system 2, a microcompressor 12, a pressure sensor 13, an electromagnetic valve 14, an electronic control system in the form of a printed circuit board 15, with an electronic control and control circuit assembled on it, power supplies, a liquid crystal display, a standard network adapter and a control panel .

The control unit can control the pneumatic element in both manual and automatic mode according to a predetermined program with the required pressure values, the number of cycles and steps in one cycle, and time intervals.

The device operates as follows.

Air supply (bleeding) to the inflatable element 6 is carried out from the pneumatic system 2 of the control unit 1 through a flexible hose 7, tightly connected on one side to the fitting of the inflatable element, and on the other side of the flexible hose there is a fitting for tight docking (undocking) with the control unit.

When the control unit 1 is turned on and the manual mode is selected as a result of pressing the “injection” button, the microcompressor 12 begins to pump air into the pneumatic channel and, accordingly, into the inflatable element 6, as a result of increasing pressure in it, it tends to straighten, which causes the rotation of the lodgment 4 relative to the lodgment 5, which leads to extension of the arm (legs), and when you press the reset button, the electromagnetic valve 14 opens and air is vented from the pneumatic system of the control unit and, accordingly, from the inflatable element. When choosing one of the automatic control programs, a similar process occurs, only the compressor starts to work automatically when the program starts. In this case, the pressure sensor 13 linearly converts the operating pressure to a voltage that is supplied to the control system and when the set pressure value is reached, the electromagnetic valve 14 opens and the air is vented. Injection and discharge in automatic mode are carried out with predetermined time intervals between each action.

The opposite action of limb flexion can be performed both by the patient himself and, if necessary (in case of weakened muscle function) or to perform cycles using a spring element 10 made, for example, of an elastic rubber belt.

The electronic control and monitoring system (control board) 15 controls the operation of the microcompressor and the solenoid valve, displays the necessary information on the liquid crystal display, turns on the audible alarm, changes and stores settings data.

There is a wired control panel with two buttons that completely duplicate the work of the two main buttons of the control unit, which greatly facilitates and extends the ability to control the operation of this device.

The choice of the element base (components) of the control unit, based on the unified, in production and approved for use in medical practice elements of Russian and foreign manufacturers, made it possible to create a very compact, lightweight, low-power, safe device.

The inventive device allows you to smoothly change the amplitude and frequency of painless movements during joint development, to work both in manual and automatic mode according to a given program. At the same time, it is possible to automatically control the change in the effort of angular deviation of one part of the joint relative to the other, the amplitude of movements, setting the required number of cycles and steps in one cycle, with the required time intervals, and as a result the treatment efficiency is increased.

The device is compact, reliable and convenient to use, as a result of which the patient can independently use it at home.

A prototype pneumoorthesis was made and tests were carried out that confirmed the operability of the claimed device.

There are positive reviews from medical institutions specializing in the treatment of patients with limb injuries.

Claims (4)

1. A device for developing movements in the joints, including a bending-bending mechanism, consisting of two elements located in the plane of rotation of the joint of the joint, rotationally connected, as well as fastening elements of the joint, characterized in that the bending-bending mechanism and the inflatable element are enclosed in the pneumatic element, and the inflatable element is located along the loading surface of the bending-bending mechanism, including the spring element and connected via a flexible hose to the pneumatic system of the unit control software, wherein the control unit is configured to monitor and control the change in the effort of angular deviation of one part of the joint relative to the other, the amplitude of movements, the number of cycles and the number of steps in one cycle, with settable time intervals. 2. The device according to claim 1, characterized in that the bending-bending mechanism is made in the form of two lodgements, interconnected by an axis of rotation. 3. The device according to claim 1, characterized in that the spring element is made with adjustable tension and is mounted on the free ends of the elements mounted for rotation. 4. The device according to claim 1, characterized in that the pneumatic element has a paralon substrate mounted on it with "Velcro".