Electrical stimulator for intervening knee joint muscle

Abstract

The utility model relates to the technical field of joint rehabilitation instruments, in particular to an electrical stimulator for intervening knee joint muscles, which comprises a cross bandage, a patella sensor is fixed on one side of the cross bandage, the cross bandage fixedly attaches the patella sensor to the patella of a knee joint, positioners are fixed on two sides of the cross bandage, and the cross bandage is fixed on the other side of the cross bandage. The electrical stimulation devices are attached to the two ends of the positioning device, the positioning device and the electrical stimulation devices are arranged around the patella of the knee joint, and after the electrical stimulation devices and the positioning device are powered on, electrical stimulation is conducted on the inner side of quadriceps femoris muscles of the knee joint, so that intramuscular contraction is generated in the quadriceps femoris muscles. According to the electrical stimulator for intervening the knee joint muscle, the stimulator is combined with the attaching and binding technology of a cross bandage, the inner side of quadriceps femoris muscle can be stimulated to contract in the training process, so that the patella moves inwards, and the effects of correcting the outer side of the patella to the neutral position and supporting the strength of the medial femoris muscle are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of joint rehabilitation equipment, in particular to an electrical stimulator for intervening knee joint muscles. Background Art

[0002] The patellofemoral joint consists of the patella and femur. This joint structure connects the patella and femur. The patella is located on the front of the femur and slides in the femoral trochlear groove. This sliding is often described as a train (patella) sliding on a track (femoral trochlear groove). If the two are not aligned, the pressure inside the joint will increase dramatically and cause pain. This is what we know as maltracking. In addition to tight structures on the outside of the lower extremity, such as the quadriceps, which can cause maltracking, the structures on the inside of the lower extremity become loose and weak, which will also cause maltracking of the patella.

[0003] Therefore, medial movement of the patella is the focus of rehabilitation. Currently, medial movement of the patella mainly relies on the contraction of the medial quadriceps muscle. However, the contraction of this muscle is very difficult in osteoarthritis and after joint surgery. The medial contraction of the quadriceps muscle is weak, and the medial movement of the patella is difficult to control. Summary of the invention

[0004] The main purpose of the utility model is to overcome the problem in the prior art that the inner side of the quadriceps femoris is weak in contraction and is not conducive to the medial movement of the patella, and to provide an electrical stimulator for intervening the knee joint muscles.

[0005] The technical solution adopted by the utility model to achieve its technical purpose is: an intervention knee joint muscle electrical stimulator, including a cross bandage, a patella sensor is fixed on one side of the cross bandage, the cross bandage fixes the patella sensor on the patella of the knee joint, and the two ends of the cross bandage are bonded to the knee joint;

[0006] Positioners are fixed on both sides of the cross bandage, and electric stimulators are attached to both ends. The positioner and the electric stimulator are arranged around the patella of the knee joint. The positioner and the electric stimulator form a closed loop around the patella of the knee joint. When the electric stimulator and the positioner are energized, the inner side of the quadriceps femoris of the knee joint is electrically stimulated to produce intramuscular contraction in the quadriceps femoris.

[0007] Preferably, the electrical stimulator includes a patch and an electrode group fixedly installed inside the patch. The patch is elastic. The electrode group is provided with a plurality of electrodes distributed in a rectangular array. The electrode group is used to release current to stimulate the contraction of the medial quadriceps femoris and can electrically connect the locator and the patellar sensor. The locator is essentially also configured as an electrical stimulation instrument, so that the locator generates electrical stimulation and the patellar sensor is electrically connected.

[0008] Preferably, a locking cap is fixedly provided at the connection between the positioner and the cross bandage, and a locking head is provided on the dressing, and the locking head and the locking cap are snap-connected to make the electrical stimulator fit on the cross bandage;

[0009] The lock head and the lock cap are similar to the snap connection of a button, the lock head and the lock cap combination is conductive, the locator and the patella sensor are electrically connected to the lock cap, and when the electrical stimulator generates electricity, it passes through the lock head and the lock cap to connect the locator and the patella sensor to electricity.

[0010] Preferably, both ends of the patch are fixedly connected with fixing belts that can be automatically rolled up. The automatic rolling up of the fixing belts is based on the same principle as that of automatically rolled up watch straps. After the patch is applied, the fixing belts can be bent to be rolled up and fitted on the paint joints.

[0011] A first magnetic sheet is embedded in one end of one fixing belt, and a second magnetic sheet is embedded in one end of the other fixing belt. The first magnetic sheet and the second magnetic sheet are magnetically connected by oppositely attracted sexes. The magnetic connection between the first magnetic sheet and the second magnetic sheet makes the end connection of the fixing belt more stable.

[0012] Preferably, the patella sensor is composed of a cotton cloth block and a plurality of miniature pressure sensors, the plurality of miniature pressure sensors are fixedly disposed in the cotton cloth block, and the patella sensor is used to detect the patella displacement of the knee joint.

[0013] Preferably, the electrical stimulator is electrically connected to a control panel, in which a processor and a power supply are integrated, and one side of the control panel is inlaid with a display screen and function buttons, and the function buttons are mainly used to turn on the power; the processor can be a single-chip microcomputer, which processes the feedback value of the patellar sensor and can also adjust the electrical stimulation signal under preset parameters; the control panel, the display screen and the processor are electrically connected by signal, and are used to display the pressure value of the patellar sensor and manually adjust the current.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The intervention knee joint muscle electrical stimulator, combined with the cross bandage taping technique, can stimulate the contraction of the medial quadriceps femoris during training, causing the patella to move inward, thereby correcting the lateralization of the patella to a neutral position and supporting the strength of the medial vastus muscle. In addition, the stimulator is also detachable, and is easy to use, install and store. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the top view of the separated structure of the electrical stimulator for interventional knee muscle electrical stimulator.

[0017] Figure 2This is a schematic diagram of the top view of the electrical stimulator for intervening knee joint muscles.

[0018] Figure 3 This is a schematic diagram of the structure of the electrical stimulator when viewed from above.

[0019] Figure 4 for Figure 3 Schematic diagram of the structure when viewed from above after the fixing belt in the embodiment is rolled up.

[0020] in:

[0021] 1-cross bandage; 101-locator; 102-locking cap; 2-applicator; 201-fixing belt; 202-locking head; 203-electrode group; 3-patella sensor; 4-control panel; 5-first magnetic sheet; 501-second magnetic sheet DETAILED DESCRIPTION

[0022] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model. Example

[0025] See also Figure 1-3A knee joint muscle intervention electrical stimulator includes a cross bandage 1, a patella sensor 3 is fixed on one side of the cross bandage 1, the cross bandage 1 fixes the patella sensor 3 on the patella of the knee joint, and the two ends of the cross bandage 1 are bonded to the knee joint; the patella sensor 3 is composed of a cotton cloth block and a plurality of miniature pressure sensors, the plurality of miniature pressure sensors are fixedly arranged in the cotton cloth block, and the patella sensor 3 is used to detect the patella displacement of the knee joint.

[0026] Positioners 101 are fixed on both sides of the cross bandage 1, and electric stimulators are attached to both ends. The positioner 101 and the electric stimulator are arranged around the patella of the knee joint. The positioner 101 and the electric stimulator form a closed loop around the patella of the knee joint. After the electric stimulator and the positioner 101 are energized, the inner side of the quadriceps femoris of the knee joint is electrically stimulated to produce intramuscular contraction in the quadriceps femoris.

[0027] Furthermore, the electrical stimulator includes an adhesive patch 2 and an electrode group 203 fixedly installed inside the adhesive patch 2. The adhesive patch 2 is elastic, and the electrode group is provided with a plurality of electrodes distributed in a rectangular array. The electrode group 203 is used to release current to stimulate the contraction of the medial quadriceps femoris, and can electrically connect the locator 101 and the patella sensor 3. The locator 101 is essentially also configured as an electrical stimulator, so that the locator 101 generates electrical stimulation and the patella sensor 3 is powered.

[0028] A locking cap 102 is fixedly provided at the connection between the locator 101 and the cross bandage 1, and a locking head 202 is provided on the patch 2. The locking head 202 and the locking cap 102 are snap-connected so that the electrical stimulator is attached to the cross bandage 1; the locking head 202 and the locking cap 102 are similar to the snap-connection of buttons, and the combination of the locking head 202 and the locking cap 102 is conductive. The locator 101 and the patella sensor 3 are electrically connected to the locking cap 102. When the electrical stimulator generates electricity, it passes through the locking head 202 and the locking cap 102 so that the locator 101 and the patella sensor 3 are powered.

[0029] Furthermore, the two ends of the patch 2 are fixedly connected with a fixing belt 201 that can be automatically rolled up. The automatic rolling up of the fixing belt 201 is based on the same principle as that of an automatically rolled up watch strap. After the patch 2 is attached, the fixing belt 201 can be bent to be rolled up and attached to the paint joint.

[0030] A first magnetic sheet 5 is embedded in one end of one fixing belt 201, and a second magnetic sheet 501 is embedded in one end of the other fixing belt 201. The first magnetic sheet 5 and the second magnetic sheet 501 are magnetically connected by oppositely attracted sexes. The magnetic connection between the first magnetic sheet 5 and the second magnetic sheet 501 makes the end connection of the fixing belt more stable.

[0031] Furthermore, the electrical stimulator is electrically connected to a control panel 4, which has an integrated processor and a power supply, and one side of the control panel 4 is inlaid with a display screen and function buttons, and the function buttons are mainly used to turn on the power; the processor can be a single-chip microcomputer, which processes the feedback value of the patella sensor 3 and can also adjust the electrical stimulation signal under preset parameters; the control panel, the display screen and the processor are connected by electrical signals, and are used to display the pressure value of the patella sensor 3 and manually adjust the current.

[0032] Specifically, when in use, the patella sensor 3 is fixed and attached to the patella of the knee joint through the cross bandage 1, and the two ends of the cross bandage 1 are bonded to the knee joint, and the lock head 202 and the lock cap 102 are snap-connected, so that the electrical stimulator is attached to the cross bandage 1;

[0033] The control panel 4 is operated to first switch on the electric stimulator, and the electrode group 203 inside the electric stimulator is connected to electricity to generate electrical stimulation, and the locator 101 and the patella sensor 3 are connected to electricity through the lock 202 and the lock cap 102, and the locator 101 generates electrical stimulation. The pressure value of the pressure sensor inside the patella sensor 3 is used to grasp the medial displacement of the patella, and through muscle electrical stimulation training, the medial contraction of the quadriceps femoris is gradually improved, so that the patella is displaced inward, and the lateralization of the patella is corrected to the neutral position.

[0034] It should be noted that although the above embodiments have been described in this article, this does not limit the scope of patent protection of the utility model. Therefore, based on the innovative concept of the utility model, changes and modifications to the embodiments described in this article, or equivalent structures, equivalent processes or equivalent functional transformations made using the contents of the utility model specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included in the scope of protection of the utility model patent.

Claims

1. An electrical stimulator for intervening knee joint muscles, characterized in that: It comprises a cross bandage (1), a patella sensor (3) being fixed on one side of the cross bandage (1), and the cross bandage (1) fixes the patella sensor (3) to fit on the patella of the knee joint; Positioners (101) are fixed on both sides of the cross bandage (1), and electrical stimulators are attached to both ends. The positioners (101) and the electrical stimulator are arranged around the patella of the knee joint. When the electrical stimulator and the positioner (101) are powered on, the inner side of the quadriceps femoris muscle of the knee joint is electrically stimulated to generate intramuscular contraction in the quadriceps femoris muscle.

2. The knee joint muscle electrical stimulator according to claim 1, characterized in that: The electrical stimulator comprises a patch (2) and an electrode group (203) fixedly mounted inside the patch (2); the electrode group (203) is provided in a plurality and distributed in a rectangular array.

3. The knee joint muscle electrical stimulator according to claim 2, characterized in that: A locking cap (102) is fixedly provided at the connection between the positioner (101) and the cross bandage (1), and a locking head (202) is provided on the dressing (2). The locking head (202) and the locking cap (102) are snap-connected to each other, so that the electrical stimulator is attached to the cross bandage (1).

4. The knee joint muscle electrical stimulator according to claim 3, characterized in that: Both ends of the patch (2) are fixedly connected with fixing belts (201) capable of automatic reeling; A first magnetic attraction sheet (5) is embedded in one end of one fixing belt (201), and a second magnetic attraction sheet (501) is embedded in one end of the other fixing belt (201), wherein the first magnetic attraction sheet (5) and the second magnetic attraction sheet (501) are magnetically connected by oppositely attracted contact.

5. The knee joint muscle electrical stimulator according to claim 1, characterized in that: The patella sensor (3) is composed of a cotton cloth block and a plurality of micro pressure sensors, wherein the plurality of micro pressure sensors are fixedly arranged in the cotton cloth block.

6. The knee joint muscle electrical stimulator according to claim 1, characterized in that: The electrical stimulation device is electrically connected to a control panel (4), the control panel (4) is internally integrated with a processor and a power supply, and one side of the control panel (4) is inlaid with a display screen and function buttons.

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