A dynamic intelligent orthosis for stroke shoulder subluxation

Abstract

The application discloses a dynamic intelligent orthosis for shoulder joint subluxation of stroke, and relates to the technical field of rehabilitation medical devices. The dynamic intelligent orthosis for shoulder joint subluxation of stroke comprises a shoulder belt body, a sleeve, a magic tape, an air bag correction module, a pressure sensor, an inertial sensor, a vibration reminding module and a neuromuscular electrical stimulation module. The application has three-dimensional correction capability, can simultaneously provide multidirectional thrust, and comprehensively improves the problems of humeral head sinking, internal rotation and anterior dislocation. The application has dynamic monitoring and feedback capability, improves the correctness of wearing and the correction effect, actively assists muscle contraction, avoids muscle disuse atrophy caused by simple external force correction, is comfortable to wear, has small activity limitation, reduces the risk of spasm, has simple structure and controllable cost, and is suitable for clinical and home rehabilitation promotion.

Description

Technical Field

[0001] This invention relates to the field of rehabilitation medical device technology, specifically to a dynamic intelligent orthosis for shoulder subluxation caused by stroke. Background Technology

[0002] Shoulder subluxation is common after stroke and is a significant complication affecting the recovery of upper limb function in hemiplegic patients. Currently, commonly used orthotics are mostly static shoulder supports and slings, providing only vertical support, which has the following significant shortcomings:

[0003] 1. It can only correct vertical subsidence of the humeral head, but cannot effectively correct anterior displacement and excessive internal rotation of the humeral head;

[0004] 2. Using a diagonal bandage for fixation excessively restricts upper limb movement and chest expansion, which can easily aggravate flexor muscle spasm and affect respiratory function;

[0005] 3. Lack of real-time monitoring and feedback mechanisms means that improper wearing position cannot be detected in time, resulting in unstable correction effects.

[0006] Therefore, there is an urgent clinical need for an intelligent orthosis that can achieve three-dimensional correction, dynamic monitoring, active reminders, and assisted muscle contraction, while taking into account stability, comfort, and functionality. Summary of the Invention

[0007] The purpose of this invention is to provide a dynamic intelligent orthosis for shoulder subluxation after stroke, which solves the problems of existing orthotics having a single correction dimension, large activity restriction, and lack of dynamic feedback.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A dynamic intelligent orthosis for shoulder subluxation in stroke includes a shoulder strap body, a sleeve, Velcro, an airbag correction module, a pressure sensor, an inertial sensor, a vibration alert module, and a neuromuscular electrical stimulation module.

[0010] The airbag correction module is installed on the shoulder strap body at the position corresponding to the front side of the humeral head to provide a backward thrust;

[0011] The pressure sensor is embedded in the surface of the airbag correction module for monitoring airbag pressure;

[0012] The shoulder strap body has an X-shaped intersection with a mounting groove sewn on. The inertial sensor is detachably installed in the mounting groove to monitor the thoracic spine posture angle.

[0013] The vibration alert module is embedded in the surface of the inertial sensor and is electrically connected to the inertial sensor for vibration alert when there is abnormal thoracic spine posture.

[0014] At least three sets of the neuromuscular electrical stimulation modules are sewn and fixed onto the shoulder strap body. The sewing positions of the neuromuscular electrical stimulation modules correspond to the trapezius, deltoid, and scapular muscle groups, respectively. The neuromuscular electrical stimulation modules are electrically connected to the inertial sensor through the mounting slot to assist muscle contraction in correcting the shoulder joint position.

[0015] Furthermore, the airbag correction module includes a flexible airbag, a miniature air pump, and a solenoid valve.

[0016] The upper part of the airbag correction module is provided with the flexible airbag, the lower part of the flexible airbag is connected to the solenoid valve, and the side of the solenoid valve is connected to the miniature air pump.

[0017] The air pressure is kept constant by using a PID control algorithm. When the airbag pressure exceeds a preset threshold, the neuromuscular electrical stimulation module is triggered.

[0018] Furthermore, the shoulder strap body is made of highly elastic and breathable fabric, and the sleeve is detachably connected to the shoulder strap body via Velcro. The Velcro is located at both ends of the shoulder strap body and on the outside of the sleeve.

[0019] A miniature power supply slot is provided on the side of the Velcro on one side of the shoulder strap body. The miniature power supply slot is electrically connected to the inertial sensor through a wire pre-embedded in the shoulder strap body. A miniature plug is provided on the side of the Velcro on one side of the sleeve. The miniature plug is electrically connected to the neuromuscular electrical stimulation module on the sleeve.

[0020] Furthermore, the inertial sensor internally includes an encapsulated inertial module, a rechargeable battery, and a control module. The encapsulated inertial module is located in the upper layer inside the inertial sensor, and the rechargeable battery and the control module are located below the encapsulated inertial module.

[0021] The beneficial effects of this invention are as follows:

[0022] (1) Three-dimensional correction: It provides vertical upward pulling force, horizontal external rotation pulling force, and horizontal backward pushing force at the same time, which comprehensively improves the problems of humeral head subsidence, internal rotation, and anterior dislocation;

[0023] (2) Dynamic monitoring and feedback: Real-time monitoring of thoracic spine posture and airbag pressure, vibration reminders of abnormal posture, improving the correctness of wearing and the corrective effect;

[0024] (3) Actively assisting muscle contraction: Electrical stimulation activates the shoulder muscles, enhances dynamic stability, and avoids disuse atrophy of muscles caused by simple external force correction;

[0025] (4) Comfortable to wear and with minimal restriction of movement: The elastic fabric with detachable sleeves provides excellent adaptability, does not restrict chest expansion, and reduces the risk of spasm.

[0026] (5) Simple structure and controllable cost: Modular design, no need for complex circuits, easy to manufacture and maintain, suitable for clinical and home rehabilitation promotion and use.

[0027] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0029] Figure 2 for Figure 1 A schematic diagram of the structure of component 4.

[0030] Figure 3 for Figure 1 A schematic diagram of the structure of component 6.

[0031] Explanation of reference numerals in the attached diagram: 1. Shoulder strap body; 2. Sleeve sleeve; 3. Velcro; 4. Airbag correction module; 5. Pressure sensor; 6. Inertial sensor; 7. Vibration alert module; 8. Neuromuscular electrical stimulation module; 40. Flexible airbag; 41. Miniature air pump; 42. Solenoid valve; 60. Encapsulated inertial module; 61. Rechargeable battery; 62. Control module. Detailed Implementation

[0032] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0035] Please see Figure 1 A preferred embodiment of this application shows a dynamic intelligent orthosis for shoulder subluxation due to stroke, which includes a shoulder strap body 1, a sleeve 2, a Velcro strap 3, an airbag correction module 4, a pressure sensor 5, an inertial sensor 6, a vibration reminder module 7, and a neuromuscular electrical stimulation module 8.

[0036] The airbag correction module 4 is installed on the shoulder strap body 1 at the position corresponding to the anterior side of the humeral head;

[0037] Pressure sensors 5 are embedded in the surface of the airbag correction module 4;

[0038] An mounting groove is sewn and fixed at the X-shaped intersection of the shoulder strap body 1, and an inertial sensor 6 is detachably installed in the mounting groove;

[0039] A vibration alert module 7 is embedded in the surface of the inertial sensor 6, and the vibration alert module 7 is electrically connected to the inertial sensor 6;

[0040] At least three sets of neuromuscular electrical stimulation modules 8 are sutured and fixed on the shoulder strap body 1. The suture positions of the neuromuscular electrical stimulation modules 8 correspond to the trapezius muscle, deltoid muscle, and scapular muscle group, respectively. The neuromuscular electrical stimulation modules 8 are electrically connected to the inertial sensor 6 through the mounting slot.

[0041] The airbag correction module 4 includes a flexible airbag 40, a miniature air pump 41, and a solenoid valve 42.

[0042] The upper part of the airbag correction module 4 is provided with a flexible airbag 40, the lower part of the flexible airbag 40 is connected to a solenoid valve 42, and the side of the solenoid valve 42 is connected to a miniature air pump 41.

[0043] The shoulder strap body 1 is made of highly elastic and breathable fabric. The sleeve 2 is detachably connected to the shoulder strap body 1 via Velcro 3, which is located at both ends of the shoulder strap body 1 and on the outside of the sleeve 2.

[0044] The side of the Velcro 3 on one side of the shoulder strap body 1 is provided with a miniature power supply slot. The miniature power supply slot is electrically connected to the inertial sensor 6 through a wire pre-embedded in the shoulder strap body 1. The side of the Velcro 3 on one side of the sleeve 2 is provided with a miniature plug. The miniature plug is electrically connected to the neuromuscular electrical stimulation module 8 on the sleeve 2.

[0045] The inertial sensor 6 has a built-in encapsulated inertial module 60, a rechargeable battery 61 and a control module 62. The encapsulated inertial module 60 is located in the upper layer inside the inertial sensor 6, and the rechargeable battery 61 and the control module 62 are located below the encapsulated inertial module 60.

[0046] Shoulder strap body: Made of highly elastic and breathable fabric, conforming to the curves of the human shoulder and back, providing basic support;

[0047] Sleeve: Detachably attached to the outside of the shoulder strap body, used to fix the affected limb, and can be adjusted according to the length of the patient's limb;

[0048] Velcro: Located at both ends of the shoulder strap and on the outside of the sleeve, it is used to adjust the tightness of the fit to accommodate patients of different body types;

[0049] Airbag correction module: Installed on the shoulder strap body at the position corresponding to the anterior side of the humeral head, it consists of a flexible airbag, a miniature air pump, and a solenoid valve, and is used to provide a constant posterior thrust to correct anterior dislocation of the humeral head;

[0050] Pressure sensor: Electrically connected to the airbag correction module, it monitors the internal pressure of the airbag in real time, provides feedback on the correction force, and ensures the stability of the correction.

[0051] Inertial sensor: fixed to the thoracic spine region on the back of the shoulder strap body, to collect data on the thoracic spine kyphosis angle and posture changes in real time;

[0052] Vibration alert module: Electrically connected to an inertial sensor, it emits a vibration alert when the thoracic spine posture exceeds a preset threshold, reminding the patient to actively adjust their posture;

[0053] Neuromuscular electrical stimulation module: It contains three independent neuromuscular electrical stimulation modules, corresponding to the upper and middle trapezius, the middle deltoid, and the scapular stabilizing muscles, respectively. Electrical stimulation can be triggered according to abnormal airbag pressure or abnormal posture to assist muscle contraction and improve the problems of internal rotation and subsidence of the humeral head.

[0054] 1. Structural assembly

[0055] like Figure 1As shown, the main body of this orthosis is a shoulder strap body (1) made of elastic fabric, with a detachable sleeve sewn on the outside (2). Velcro is attached to both ends of the shoulder strap and the outside of the sleeve (3). An airbag correction module (4) is installed on the shoulder strap body corresponding to the anterior position of the humeral head, and the airbag is connected to a pressure sensor (5). An inertial sensor (6) and a vibration reminder module (7) are fixed on the back of the shoulder strap. Three sets of neuromuscular electrical stimulation modules (8) are attached to the corresponding positions around the shoulder.

[0056] 2. Wearing and using

[0057] In use, the shoulder strap (1) is worn on the patient's shoulder, the affected limb is inserted into the sleeve (2), and the tightness is adjusted by the Velcro (3) so that the airbag correction module (4) is aligned with the front of the humeral head, and the neuromuscular electrical stimulation module (8) is attached to the surface of the target muscle. After the power is turned on, the device automatically initializes, the pressure sensor (5) monitors the airbag pressure in real time, and the inertial sensor (6) collects the thoracic spine posture data.

[0058] 3. Work Process

[0059] Static correction: The airbag inflation provides a constant backward thrust, and the shoulder strap elasticity provides upward and outward rotation pull, achieving three-dimensional mechanical support;

[0060] Dynamic monitoring: Inertial sensors continuously collect thoracic spine angle data, and pressure sensors monitor the corrective force in real time;

[0061] Vibration reminder: When the thoracic kyphosis angle exceeds the preset range, the vibration reminder module (7) is activated to prompt the patient to actively straighten their chest and adjust their posture;

[0062] Electrical stimulation correction: When the airbag pressure is abnormal or the posture is abnormal, the corresponding neuromuscular electrical stimulation module (8) is triggered to output low-frequency electrical stimulation to assist the contraction of the shoulder muscles and promote the repositioning of the humeral head.

[0063] In summary, this invention provides a dynamic intelligent orthosis for shoulder subluxation in stroke patients. This device possesses three-dimensional correction capabilities, simultaneously providing vertical upward traction, horizontal external rotation traction, and horizontal backward thrust to comprehensively improve humeral head subsidence, internal rotation, and anterior dislocation. It features dynamic monitoring and feedback capabilities, real-time monitoring of thoracic spine posture and airbag pressure, and vibration alerts to abnormal postures, enhancing wearing accuracy and corrective effect. It can actively assist muscle contraction, and electrical stimulation activates the shoulder periarticular muscle groups, enhancing dynamic stability and avoiding muscle atrophy caused by simple external force correction. It is comfortable to wear with minimal restriction of movement; the elastic fabric combined with detachable sleeves provides strong adaptability, does not restrict chest expansion, and reduces the risk of spasticity. The structure is simple, cost-effective, and the modular design eliminates the need for complex circuitry, making manufacturing and maintenance convenient, suitable for clinical and home rehabilitation applications.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A dynamic intelligent orthosis for shoulder subluxation following stroke, comprising a shoulder strap body (1), a sleeve (2), and Velcro (3), characterized in that, It also includes an airbag correction module (4), a pressure sensor (5), an inertial sensor (6), a vibration alert module (7), and a neuromuscular electrical stimulation module (8). The airbag correction module (4) is installed on the shoulder strap body (1) at the position corresponding to the front of the humeral head; The pressure sensor (5) is embedded in the surface of the airbag correction module (4); The shoulder strap body (1) has an X-shaped intersection with a mounting groove sewn on, and the inertial sensor (6) is detachably installed in the mounting groove. The vibration alert module (7) is embedded in the surface of the inertial sensor (6), and the vibration alert module (7) is electrically connected to the inertial sensor (6). At least three sets of the neuromuscular electrical stimulation modules (8) are sewn and fixed on the shoulder strap body (1). The sewing positions of the neuromuscular electrical stimulation modules (8) correspond to the trapezius muscle, deltoid muscle, and scapular muscle group, respectively. The neuromuscular electrical stimulation modules (8) are electrically connected to the inertial sensor (6) through the mounting groove.

2. The dynamic intelligent orthosis for shoulder subluxation after stroke as described in claim 1, characterized in that, The airbag correction module (4) includes a flexible airbag (40), a micro air pump (41), and a solenoid valve (42). The upper part of the airbag correction module (4) is provided with the flexible airbag (40), the lower part of the flexible airbag (40) is connected to the solenoid valve (42), and the side of the solenoid valve (42) is connected to the micro air pump (41).

3. The dynamic intelligent orthosis for shoulder subluxation after stroke as described in claim 1, characterized in that, The shoulder strap body (1) is made of highly elastic and breathable fabric. The sleeve (2) is detachably connected to the shoulder strap body (1) via Velcro (3). The Velcro (3) is located at both ends of the shoulder strap body (1) and on the outside of the sleeve (2). A miniature power supply slot is provided on the side of the Velcro (3) on one side of the shoulder strap body (1). The miniature power supply slot is electrically connected to the inertial sensor (6) through a wire pre-embedded in the shoulder strap body (1). A miniature plug is provided on the side of the Velcro (3) on one side of the sleeve (2). The miniature plug is electrically connected to the neuromuscular electrical stimulation module (8) on the sleeve (2).

4. The dynamic intelligent orthosis for shoulder subluxation after stroke as described in claim 1, characterized in that, The inertial sensor (6) has an internally encapsulated inertial module (60), a rechargeable battery (61), and a control module (62). The encapsulated inertial module (60) is located on the upper layer inside the inertial sensor (6), and the rechargeable battery (61) and the control module (62) are located below the encapsulated inertial module (60).

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