Inflatable glove and low-frequency electrical stimulation wrist and hand movement combined device

Abstract

The invention relates to an inflatable glove combined low-frequency electrical stimulation wrist-hand movement device, which comprises an inflatable glove and at least one group of electrical stimulation parts, the inflatable glove is a finger separating glove which is provided with an opening at one end and can be sleeved on a hand, and each finger part of the inflatable glove is provided with a segmented inflation and deflation structure; the electrical stimulation part is arranged to be a low-frequency electrode device which is adjustable in size and can be arranged on the wrist in a sleeving mode, and the face, facing the arm, of the electrical stimulation part releases low-frequency current in a mode of being attached to the skin. Through the arrangement of the inflatable glove and the electrical stimulation part, the device can be combined with air pressure massage and electrotherapy massage into a whole when in use, so that the hand and wrist of a patient can be better treated, and the treatment effect is improved; in addition, by adjusting the current in the electrical stimulation part, the device can be conveniently adjusted according to different patients and different muscle contraction conditions of the patients during use.

Description

Technical Field

[0001] The invention relates to the technical field of wrist-hand therapeutic devices, and in particular to an inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device. Background Art

[0002] During the rehabilitation treatment of shoulder-hand syndrome, thread wrapping, muscle taping and pneumatic drive are often used for treatment.

[0003] However, the duration of the thread wrapping method is relatively short, and improper operation may easily cause ischemia of the affected limb; the muscle patch used in the muscle effect taping method often requires professional personnel to operate and is difficult to perform at home; although the pneumatic drive method is easy to operate and implement, it generally lacks zonal treatment of the wrist. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] The present invention provides an inflatable glove combined with a low-frequency electrical stimulation wrist and hand movement device, which solves the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an inflatable glove combined with a low-frequency electrical stimulation wrist and hand activity device, comprising an inflatable glove and at least one group of electrical stimulation parts, wherein the inflatable glove is configured as a finger-split glove with an opening at one end and can be put on the hand, and each finger of the inflatable glove is provided with a segmented inflation and deflation structure, the electrical stimulation part is configured as a low-frequency electrode device with adjustable size and can be put on the wrist, and the electrical stimulation part releases a low-frequency current on one side of the arm in close contact with the skin, and the calculation formula of the low-frequency current intensity is as follows:

[0008] u(k)=K p ×e(k)+K i ×∑e(k)+K d ×(e(k)-e(k-1)) / Δ t

[0009] Where, u(k) is the output current at the kth sampling moment;

[0010] K p is the proportionality coefficient;

[0011] e(k) is the error between the actual output current and the expected output current at the kth sampling moment;

[0012] K i is the integration coefficient;

[0013] ∑e(k) is the error accumulation from the initial moment to the kth sampling moment;

[0014] K d is the differential coefficient;

[0015] (e(k)-e(k-1)) / Δ t is the rate of change of error, and Δ t is the sampling time interval.

[0016] Preferably, the inflatable glove comprises an air bag type glove and five air tubes, a plurality of inflatable and deflable air bag structures are formed in sections at each finger of the air bag type glove, and an air tube with a length matching the air bag type glove is provided at each finger of the air bag type glove, and the air tubes are connected to each air bag structure at each finger of the air bag type glove.

[0017] In a further embodiment, the air pipe comprises a plurality of corrugated sections and a plurality of straight sections, the corrugated sections and the straight sections are alternately distributed, and the corrugated sections and adjacent straight sections are interconnected.

[0018] It is further preferred that the inflatable glove combined with the low-frequency electrical stimulation wrist-hand movement device also includes a plurality of fixing frames, and each of the air tubes is fixed to the outside of the inflatable glove by means of a plurality of fixing frames distributed at intervals.

[0019] It is further preferred that the inflatable glove combined with the low-frequency electrical stimulation wrist-hand movement device also includes a fixing clip, which is installed and fixed at a position close to the opening of the inflatable glove, and the ends of the five air tubes all pass through the fixing clip and are connected to an external air pump structure.

[0020] In a further preferred embodiment, a plurality of granular protrusions distributed at intervals are formed on the inner side of the air bag type glove that contacts the skin.

[0021] In a further embodiment, the electrical stimulation part includes a wrist elastic band and a hollow groove, at least one hollow groove is formed on the wrist elastic band, the electrode sheet is embedded in the hollow groove, the wrist elastic band is arranged as an elastic band structure, and the wrist elastic band is arranged as an integrated annular band or an annular band connected by Velcro.

[0022] It is further preferred that the inflatable glove combined with the low-frequency electrical stimulation wrist-hand movement device also includes a plurality of connecting elastic bands, and the inflatable glove and the adjacent electrical stimulation part as well as the two adjacent electrical stimulation parts are connected together by connecting elastic bands.

[0023] (III) Beneficial effects

[0024] Compared with the prior art, the present invention provides an inflatable glove combined with a low-frequency electrical stimulation wrist and hand activity device, which has the following beneficial effects:

[0025] In the present invention, by providing the inflatable gloves and the electric stimulation part, the device can combine air pressure massage and electrotherapy massage into one when in use, so as to better treat the patient's hands and wrists and improve the treatment effect; in addition, by the adjustment setting of the current in the electric stimulation part, the device can be conveniently adjusted to different patients and different muscle contraction conditions of the patients when in use, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of an inflatable glove combined with a low-frequency electrical stimulation wrist and hand activity device according to the implementation scheme;

[0027] Figure 2 is a schematic structural diagram of a glove portion according to an embodiment;

[0028] Figure 3 Schematic diagram of the structure of a wrist according to an embodiment of the present invention.

[0029] In the figure: 10, inflatable gloves; 11, air bag gloves; 12, fixing frame; 13, trachea; 131, corrugated section; 132, straight section; 14, fixing clip; 20, electrical stimulation part; 21, wrist elastic band; 22, hollow groove; 23, electrode sheet; 30, connecting elastic band. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1, an inflatable glove combined with a low-frequency electrical stimulation wrist and hand activity device, which may include an inflatable glove 10, at least one group of electrical stimulation parts 20, and multiple sections of connecting elastic bands 30. The inflatable glove 10 is configured as a finger-split glove with an opening at one end and can be put on the hand, and each finger of the inflatable glove 10 is provided with a segmented inflation and deflation structure, so that the patient can perform rehabilitation treatment on each finger separately after wearing it. The electrical stimulation part 20 is configured as a low-frequency electrode device with adjustable size and can be put on the wrist, and the electrical stimulation part 20 releases low-frequency current in a manner close to the skin on one side of the arm, so that the patient can also perform rehabilitation treatment on the wrist in combination with electrotherapy after wearing it. The inflatable glove 10 and the adjacent electrical stimulation part 20 and the two adjacent electrical stimulation parts 20 are connected together by connecting elastic bands 30 to avoid the scattered loss of the various structures of the device after being placed for a long time.

[0032] See also Figure 2 The inflatable glove 10 may include an air bag type glove 11 , a plurality of fixing frames 12 , five air tubes 13 and a fixing clip 14 .

[0033] A plurality of inflatable and deflated air bag structures are formed in sections at each finger of the air bag glove 11, and each finger can be independently inflated and deflated. A plurality of granular protrusions are also formed at intervals on the inner side of the bag glove 11 that contacts the skin, so that the patient's fingers can be massaged by using the contact between the air bag glove 11 and the fingers when it is inflated.

[0034] Each finger of the air bag type glove 11 is provided with an air tube 13 of a length matching the finger, and each air tube 13 is fixed to the outside of the inflatable glove 10 by a plurality of spaced fixing frames 12. A fixing clip 14 is installed and fixed near the opening of the inflatable glove 10 to gather the five air tubes 13.

[0035] The ends of the five air tubes 13 all pass through the fixing clip 14 and are connected to the external air pump structure, and the air supply and deflation of each air tube 13 are independently controlled. The air tube 13 is connected to each air bag structure at each finger of the air bag type glove 11, so that the inflation and deflation state of the air bag structure can be adjusted.

[0036] The trachea 13 may include a plurality of corrugated sections 131 and a plurality of straight sections 132. The corrugated sections 131 and the straight sections 132 are alternately distributed, and the corrugated sections 131 and adjacent straight sections 132 are interconnected, so that when the patient bends or straightens his hands, excessive bending or stretching of the trachea 13 can be avoided, allowing air to pass smoothly.

[0037] See also Figure 3 The electrical stimulation part 20 includes a wrist elastic band 21 and a hollow groove 22.

[0038] The wrist elastic band 21 is configured as an elastic band structure, and the wrist elastic band 21 is configured as an integrated annular band or an annular band connected by Velcro, so that it can be put on the wrist and fixed.

[0039] At least one hollow groove 22 is formed on the wrist elastic band 21, and the electrode sheet 23 is embedded in the hollow groove 22, and the electrode sheet 23 can contact the skin at the wrist and release a low-frequency current.

[0040] The principle of electrode patch treatment for shoulder-hand syndrome is mainly based on low-frequency electrotherapy, which is a method of treating diseases by applying pulse current with a frequency of less than 1000Hz to the human body. This method inputs a specific low-frequency pulse current into the human body through the skin, stimulating nerves and muscles to achieve the purpose of analgesia and treatment of diseases.

[0041] The electrodes can directly contact the human nerves and muscles through the skin, thereby transmitting electrical stimulation signals to the human body. When the electrical stimulation signals are transmitted through the human nerves and muscles, they can cause muscle contraction and relaxation, promote blood and lymph circulation, relieve pain, etc.

[0042] Before a cell is stimulated, the transmembrane potential of the cell membrane, which is negative inside and positive outside, is the resting potential. When the cell is electrically stimulated, the permeability of the cell membrane to sodium ions increases, and sodium ions enter the cell, reducing the negative potential of the cell membrane. When the negative potential decreases to a threshold, the permeability of the cell membrane to sodium ions increases again, and a large number of sodium ions enter the cell, turning the negative potential inside the membrane into a positive potential. This process is called depolarization. After depolarization, the permeability of the cell membrane to potassium ions increases, and a large number of potassium ions flow out of the cell, reducing the transmembrane potential of the cell membrane and restoring the negative potential. This process is called repolarization. After repolarization, the cell membrane potential will be lower than the resting potential, and then slowly return to the resting potential. This process is called hyperpolarization. The transmission speed of the action potential is affected by the size of the cell diameter and the presence or absence of myelin. The larger the cell diameter, the faster the action potential transmission speed. When muscle fibers are stimulated and excited, the action potential prompts the Ca in the sarcoplasmic reticulum to repolarize. 2 + release, leading to intrasarcoplasmic Ca 2 +The concentration increases rapidly, causing the thin filaments to slide and producing muscle cell contraction.

[0043] The intensity setting of low-frequency electrotherapy has an important influence on the therapeutic effect and treatment effect. The intensity of low-frequency electrotherapy refers to the amplitude of the current oscillation up and down relative to the zero potential. The current intensity affects the amount of muscle tissue recruited, thereby affecting the strength of muscle contraction. During the treatment process, the current intensity needs to be adjusted according to the patient's tolerance and treatment effect.

[0044] The calculation formula of low-frequency current intensity is as follows:

[0045] u(k)=K p ×e(k)+Ki ×∑e(k)+K d ×(e(k)-e(k-1)) / Δ t

[0046] Wherein, u(k) is the intensity of the output current at the kth sampling moment.

[0047] e(k) is the error between the actual output current and the expected output current at the kth sampling moment, K p is the proportional coefficient. In low-frequency electrode therapy, when there is a deviation between the target muscle contraction force and the current muscle contraction force, the proportional control will immediately adjust the electrical stimulation parameters to reduce the deviation. The proportional gain K p The larger it is, the more aggressive the conditioning effect, and the faster the changes in muscle contraction force;

[0048] ∑e(k) is the error accumulation from the initial moment to the kth sampling moment, K i Is the integral coefficient. In low-frequency electrode therapy, when the deviation persists, the integral control will gradually increase the electrical stimulation parameters to eliminate the deviation. Integral gain K i Determines the degree of influence of deviation accumulation on output change. K i The larger it is, the stronger the integral effect is, and the faster the muscle contraction force gradually approaches the target value.

[0049] (e(k)-e(k-1)) / Δ t is the rate of change of error, and Δ t is the sampling time interval, K d is the differential coefficient. In low-frequency electrode therapy, when the deviation change rate is large, the differential control will adjust the electrical stimulation parameters in advance to suppress the further increase of the deviation. d Determines the degree of influence of the deviation change rate on the output change. K d The larger it is, the stronger the differential effect is and the better the predictability of changes in muscle contraction force is.

[0050] In this embodiment, the muscle contraction force can be indirectly evaluated by collecting and analyzing the electromyographic signals on the muscle surface, and the above-mentioned low-frequency current intensity can be adjusted.

[0051] The system of the present invention may also include a control system for controlling the automatic operation of the low-frequency current output and the inflatable glove control. It should be understood that the control system has no particular limitation and can be implemented by the control technology in the prior art, which will not be described in detail here.

[0052] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which will not be described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An inflatable glove combined with a low-frequency electrical stimulation wrist and hand activity device, characterized in that: The invention comprises an inflatable glove (10) and at least one group of electrical stimulation parts (20), wherein the inflatable glove (10) is configured as a finger-split glove with an opening at one end and can be put on the hand, and each finger of the inflatable glove (10) is provided with a segmented inflation and deflation structure, and the electrical stimulation part (20) is configured as a low-frequency electrode device with adjustable size and can be put on the wrist, and the electrical stimulation part (20) releases a low-frequency current in contact with the skin on one side of the arm, and the calculation formula of the low-frequency current intensity is as follows: u(k)=K p ×e(k)+K i ×∑e(k)+K d ×(e(k)-e(k-1)) / Δ t Where, u(k) is the output current at the kth sampling moment; K p is the proportionality coefficient; e(k) is the error between the actual output current and the expected output current at the kth sampling moment; K i is the integration coefficient; ∑e(k) is the error accumulation from the initial moment to the kth sampling moment; K d is the differential coefficient; (e(k)-e(k-1)) / Δ t is the rate of change of error, and Δ t is the sampling time interval.

2. The inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device according to claim 1, characterized in that: The inflatable glove (10) comprises an air bag glove (11) and five air tubes (13), wherein a plurality of inflatable and deflable air bag structures are formed in sections at each finger of the air bag glove (11), and an air tube (13) having a length matching that of the air bag glove is provided at each finger of the air bag glove (11), wherein the air tubes (13) are connected to each air bag structure at each finger of the air bag glove (11).

3. The inflatable glove combined with a low-frequency electrical stimulation wrist and hand movement device according to claim 2, characterized in that: The air pipe (13) comprises a plurality of corrugated sections (131) and a plurality of straight sections (132); the corrugated sections (131) and the straight sections (132) are arranged in a staggered manner, and the corrugated sections (131) and adjacent straight sections (132) are interconnected.

4. The inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device according to claim 3, characterized in that: It also comprises a plurality of fixing frames (12), and each of the air tubes (13) is fixed to the outside of the inflatable glove (10) by means of a plurality of fixing frames (12) distributed at intervals.

5. The inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device according to claim 4, characterized in that: It also comprises a fixing clip (14), which is installed and fixed at a position close to the opening of the inflatable glove (10), and the ends of the five air tubes (13) all pass through the fixing clip (14) and are connected to an external air pump structure.

6. The inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device according to any one of claims 2 to 5, characterized in that: A plurality of granular protrusions distributed at intervals are formed on the inner side of the air bag type glove (11) that contacts the skin.

7. The inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device according to claim 1, characterized in that: The electrical stimulation part (20) comprises a wrist elastic band (21) and a hollow groove (22); at least one hollow groove (22) is formed on the wrist elastic band (21); and the electrode sheet (23) is embedded in the hollow groove (22).

8. The inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device according to claim 7, characterized in that: The wrist elastic band (21) is configured as an elastic band structure, and the wrist elastic band (21) is configured as an integrated annular band or an annular band connected by means of a hook and loop fastener.

9. The inflatable glove combined with a low-frequency electrical stimulation wrist-hand activity device according to claim 7 or 8, characterized in that: It also includes a plurality of connecting elastic bands (30), and the inflatable glove (10) and the adjacent electrical stimulation part (20) as well as two adjacent electrical stimulation parts (20) are connected together by the connecting elastic bands (30).

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