Magnetic therapy chair

Abstract

The invention relates to medical therapeutic and prophylactic low-frequency magnetic pulse devices. A magnetic therapy chair comprises a body in the form of a chair with a seat, and a magnetic field inductor located under the seat, wherein the body of the chair is mounted on a frame, to which an assembly for the movement of the inductor is rigidly attached, said assembly comprising guides along which move carriages that set the magnetic field inductor into horizontal left-right and forwards-backwards motion along the guides. The magnetic field inductor is configured in the shape of an Archimedean spiral. A motor is provided in the form of a stepper motor. The stepper motor is attached to the frame The carriages are attached to a base of the inductor. The carriages are provided in the form of linear bearings.

Description

[0001] A6 IN 2 / 00

[0002] MAGNETIC THERAPY CHAIR

[0003] The device is a medical therapeutic and prophylactic low-frequency magnetic pulse device for therapeutic and general stimulation (massage) of tissues by means of electromagnetic induction, namely for magnetic stimulation of the pelvic floor and pelvic organs.

[0004] A device for influencing a biological object with a magnetic field is known (see Russian Federation patent for utility model No. 159809, published 2016), containing an inductor made of five identical flat ring inductive coils inscribed in the faces of an imaginary regular truncated pyramid; the inductor is mounted on a chair and connected to it using a reclining device, and the chair is equipped with support protrusions located behind the backrest and serving to fix the inductor in the reclined state.

[0005] A chair for complex physiotherapeutic impact on the human body is known (see Russian patent for invention No. 2344850, published.

[0006] 2009), consisting of a backrest, a seat, armrests, a shin rest with inductors placed on their outer surfaces in the form of flat coils connected to a current pulse generator through a control unit made with the possibility of alternately turning on the coils after a given time interval, the chair is supplemented with sidewalls, on the inner surfaces of its parts that come into contact with the human body, flat elements are placed, made in the form of sets of concentric closed tubes fastened to each other, having slots along the entire contour on the side that comes into contact with the human body and filled with elastic balls partially protruding from the slots and made of magnetically soft rubber, the surface of which is given an artificial roughness.

[0007] A common drawback of known devices is the complexity of the design and the lack of a mechanism for moving the magnetic field.

[0008] The closest in technical essence to the claimed device, a prototype in which a mechanism for moving and fixing the backrest, driven by an electric motor, is used, is a device for exposure to a magnetic field (see Russian patent for invention No. 2171696, published 2001).The prototype comprises sections of inductors for various parts of the patient's body, placed on a base, characterized in that the base is made in the form of a chair and is composed of three sections with inductors placed thereon: the first, forming the back of the chair, the second fixed, forming the seat, the third, forming a rest for the shins, and two half-sections forming armrests. A half-section of inductors for the head and two half-sections of inductors for covering the forearms and torso are attached to the first section of the common base, two half-sections of inductors for covering the thighs are attached to the second section, two half-sections of inductors for covering the shins are attached to the third section, and a half-section of inductors for covering the elbows is attached to each of the half-sections forming the armrests. The first and third sections can perform synchronous angular movements relative to the fixed second section by means of a movement and locking mechanism driven by an electric motor.

[0009] The prototype uses a mechanism for moving the backrest and the shin rest, which synchronously rotate to an angle convenient for the patient's position, but there is no possibility of moving the inductor.

[0010] The objective is to enhance the therapeutic effect associated with a changing magnetic field relative to a person. The technical result is to increase the reliability of the device for magnetic stimulation of the pelvic floor and pelvic organs.

[0011] The technical result is achieved in that the magnetic therapy chair comprises a housing made in the form of a chair with a seat, a magnetic field inductor, the magnetic field inductor is located under the seat, the chair housing is mounted on a frame to which an inductor movement unit is rigidly attached, including first and second guides fixed on the frame, as well as first and second carriages, wherein the first carriages are configured to move forward and backward along the first guides, the second carriages are located on the second guides, and the first guides are configured to move left and right along the second guides.

[0012] The magnetic field inductor is designed as an Archimedean spiral. The carriages are attached to the inductor base. Linear bearings are used as carriages. The guides are secured to the frame using a screw connection.

[0013] Mounting the chair body to a frame, to which the inductor movement unit is rigidly attached, makes the unit more stable and allows it to withstand higher loads. The inductor movement unit, which includes guides along which the carriages move, drives the magnetic field inductor along the guides horizontally left and right and forward and backward, increases the reliability of the structure by eliminating the possibility of displacement or tilt of the inductor itself relative to the horizontal surface. Furthermore, it provides precise control of the inductor's position with an indication of its actual position, increasing the effectiveness of magnetic stimulation of the pelvic floor and pelvic organs.

[0014] The proposed technical solution is illustrated by examples of implementation, where Fig. 1 shows an example of the implementation of the chair body, namely the chair body with a back, armrests, seat, the shape of the body can be different, Fig. 2 - an example of the implementation of the frame with guides and an inductor, Fig. 3 shows an example of the implementation of the inductor movement unit, where the frame-1, supports-2, inductor-3, substrate-4, carriages-5, guides-6, ball screw transmission-7, stepper motor-8, carriages-9, guides-10 are shown.

[0015] The chair body (see Fig. 1), mounted on frame 1, can be made, for example, from ABS plastic (acrylonitrile butadiene styrene), polypropylene, polycarbonate, etc. The decorative body can be secured to frame 1 using a screw connection or clips.

[0016] The proposed device (see Fig. 2) may comprise: a frame 1, made, for example, of a supporting metal profile or plastic frame; supports 2, which may be movable or stationary; and a magnetic field inductor 3. Inductor 3, which generates pulsed magnetic fields, is preferably designed as an Archimedean spiral with, for example, a rectangular conductor cross-section, capable of being connected to an electronic unit.

[0017] Under the seat of the chair there is an inductor movement unit, with the help of which the inductor-3 of the magnetic field is moved in the horizontal plane along the width (left-right) and along the length of the seat (forward-backward).

[0018] The inductor movement unit-3 consists of guides-6 and guides-10, fixed on the frame-1, for example, by means of a screw connection, a transmission for converting the movement of the motor, in the preferred embodiment, the rotational movement of the stepper motor shaft into the translational movement of the inductor along the axis of the guides.

[0019] The use of a stepper motor in the proposed device increases the reliability of the design by minimizing friction between components and provides precise control of the inductor's position with an indication of its actual position. Ball screw, screw-and-nut, belt drive, and other drives can be used. The motor can be a linear actuator, stepper motor, servo drive, or other type.

[0020] Inductor-3 can be mounted on substrate-4, which can be secured to the guides or carriages-5. Linear bearings are primarily used for carriages-5 and-9, ensuring smooth movement with minimal friction in a straight line. Inductor substrate-4 can be made of PCB with a helical groove milled into it to accommodate the inductor.

[0021] Substrate-4 can be ventilated, mounted on adjustable hangers on the inductor base to ensure precise fan height adjustment. To prevent heating of the patient's seat, a forced ventilation system is used, implemented using directional air ducts and specialized high-efficiency axial fans located on the inductor base. The fans are housingless, allowing them to be used close to the electromagnetic field source (the inductor). Airflows remove excess heat from the work surface, preventing it from exceeding 40 degrees Celsius, ensuring a comfortable procedure for the patient.

[0022] Carriages 5, together with the substrate 4, can move forward and backward along guides 6 into the device's depth. Linear carriages 5 can be equipped with a flexible separator and secured with an angled profile directly to the inductor base, without the substrate. Carriages 5 are moved by a ball screw 7 and a stepper motor s.

[0023] Carriages 9 are located on guides 10. Guides 6 move horizontally, left and right, along guides 10. Carriages 9 are attached to a ball screw 7 and a stepper motor 8. Carriages 9 can be moved using a gear transmission or a linear drive. Let's consider an example of movement using the preferred option: a ball screw 7 and a stepper motor 8. For a more compact drive system layout, the stepper motor can be connected using a belt or gear transmission.

[0024] Stepper motor 8 is controlled by the device's control board, the controller (not shown in the diagram). Stepper motor 8 is connected to the lead screw of ball screw 7 via a coupling. Rotation of the stepper motor axis causes the ball screw shaft to rotate, and the ball screw nut moves along the shaft axis. One shaft rotation causes the nut to move a distance equal to the screw pitch. The nut is connected to carriage 9, and the movement of the nut causes carriage 9 and, accordingly, inductor 3 to move.

[0025] To ensure the movement of carriages within the established boundaries, inductive sensors can be installed to set the value of calibration distances.

[0026] Stepper motor 8 can be mounted directly to frame 1 using a bracket. Frame 1 houses the electronic unit, which contains the high-voltage and low-voltage electronic components. These components generate pulses with the required parameters for inductor 3, control the inductor 3 module's movement system, the inductor 3 position indicator light system, and the system that enables wireless control of the device via both a tablet computer and a radio remote control.

[0027] The device operates as follows. It is a chair-like device that enables deep electromagnetic stimulation of the pelvic floor and pelvic organs. It operates by converting electrical signals of preset parameters into pulsed magnetic field signals with a frequency of 1-200 Hz and magnetic induction variations from 1 to 400 mT. The device can induce a magnetic field with variable frequency and amplitude, as well as generate pulses modulated in both frequency and power with a preset amplitude modulation percentage or pulse frequency deviation range, in the form of a square wave, sine wave, trapezoid, triangle, or a combination of these.

[0028] Control can be carried out using a wireless tablet computer via a WiFi connection to the microcomputer or using a radio frequency remote control.

[0029] The equipment consists exclusively of non-hygroscopic materials, which increases the safety of using the equipment when indoor humidity increases.

[0030] The use of the chair allows the patient to sit in clothing and with fixing bandages (as well as plaster, tapes, etc.), in a comfortable, relaxed state, which increases the effectiveness of magnetic stimulation of the pelvic floor and pelvic organs.

Claims

Formula 1. A chair for magnetic therapy, comprising a body made in the form of a chair with a seat, a magnetic field inductor, characterized in that the magnetic field inductor is located under the seat, the body of the chair is mounted on a frame, to which a movement unit of the inductor is rigidly attached, including first and second guides fixed on the frame, as well as first and second carriages, wherein the first carriages are configured to move forward and backward along the first guides, the second carriages are located on the second guides, and the first guides are configured to move left and right along the second guides.

2. A chair for magnetic therapy according to paragraph 1, characterized in that the magnetic field inductor is made in the form of an Archimedean spiral.

3. A chair for magnetic therapy according to item 1, characterized in that the carriages are secured to the base of the inductor.

4. A chair for magnetic therapy according to paragraph 1, characterized in that linear bearings are used as carriages.

5. A chair for magnetic therapy according to paragraph 1, characterized in that the guides are secured to the frame using a screw connection.

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