Assistive devices for preventing shoulder subluxation

Abstract

The present application provides an auxiliary device for preventing shoulder subluxation, which relates to the technical field of medical protective equipment. The device of the present application includes a wearing bracket, a shoulder restraint portion and an upper arm attachment portion; the upper end of the upper arm attachment portion is connected to one end of the shoulder restraint portion through a first adjustment mechanism, and the wearing bracket has a hard frame that can span and surround the waist and ribs from the front and back directions, and the hard frame is connected to the side end of the upper arm attachment portion through a second adjustment mechanism; it also includes a pressure sensor for sensing the contact pressure information between the shoulder restraint portion and the user's shoulder; a controller executes a preset control method to realize the occurrence of shoulder subluxation based on the first sensing data carrying the contact pressure information, and controls the first adjustment mechanism and the second adjustment mechanism to realize the adjustment operation of dislocation recovery. The technical solution of the present application can meet the prevention and protection needs of shoulder subluxation in actual scenarios.

Description

Technical Field

[0001] The present application relates to the technical field of medical protective equipment, and in particular to an auxiliary device for preventing shoulder joint subluxation. Background Art

[0002] Shoulder subluxation is mainly caused by muscle relaxation and lack of tension, coupled with the traction of the affected arm's own weight. Shoulder subluxation in stroke patients is one of the main complications of hemiplegia. In the early stage of stroke, patients usually show paralysis of the shoulder girdle muscles, decreased muscle tension, and downward prolapse of the upper limbs, which makes the shoulder capsule and ligaments loose and pulled; when the patient sits or stands, due to the effect of gravity, the humeral head slides down from the glenoid cavity, resulting in shoulder subluxation; after the relaxation period, with the onset of spasm, the scapula retreats and the humeral head is adducted and internally rotated, further affecting the coordinated movement of the shoulder joint, resulting in compression and pain of the shoulder soft tissue during movements such as lifting and abduction.

[0003] In the process of realizing the present invention, the inventors found that there are at least the following problems in the prior art: the shoulder injury protection devices used in the related art are generally aimed at the situation after fracture of the shoulder joint and upper arm, and can only play the role of protecting the shoulder or fixing the alignment relationship of the shoulder joint (articular head and glenoid cavity). There is a lack of protective measures adopted for the pathological characteristics of shoulder subluxation, and it cannot be well applied to the prevention of shoulder subluxation.

[0004] Therefore, how to propose an auxiliary device for preventing shoulder subluxation has become a technical problem to be solved urgently.

[0005] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0006] In order to overcome the problems existing in the related art to at least a certain extent, the embodiment of the present application provides an auxiliary device for preventing shoulder subluxation. According to the pathological characteristics of shoulder subluxation, a specific device configuration is adopted to meet the prevention and protection needs of shoulder subluxation in actual scenarios.

[0007] The embodiment of the present application provides an auxiliary device for preventing shoulder joint subluxation, the auxiliary device comprising a wearing bracket, a shoulder restraint portion and an upper arm attachment portion; the upper end of the upper arm attachment portion is connected to one end of the shoulder restraint portion through a first adjustment mechanism, the wearing bracket has a hard frame body that can span and surround the waist and ribs from the front and back directions, and the hard frame body is connected to the side end of the upper arm attachment portion through a second adjustment mechanism; the auxiliary device also includes,

[0008] A pressure sensor is disposed on the inner side of the shoulder restraint portion and is used to sense contact pressure information between the shoulder restraint portion and the user's shoulder;

[0009] A controller, used to execute a preset control method after the assistive device is worn;

[0010] The preset control method comprises the following steps:

[0011] Acquire first sensing data carrying the contact pressure information from the pressure sensor;

[0012] Determining whether there is a first abnormal pattern indicating shoulder subluxation according to the first sensing data;

[0013] When it is determined that there is a first abnormal mode, the first adjustment mechanism and the second adjustment mechanism are controlled to perform a first adjustment operation for realizing dislocation recovery, and after the first adjustment operation is completed, the step of obtaining the first sensing data and subsequent steps are skipped,

[0014] Otherwise, directly proceed to the step of acquiring the first sensing data and subsequent steps.

[0015] In a possible implementation, after determining that the first abnormal mode exists, before controlling the first adjustment mechanism and the second adjustment mechanism to perform a first adjustment operation for achieving dislocation recovery, a step of determining the number of times the first adjustment operation is performed is also included;

[0016] When it is determined that the execution times of the first adjustment operation exceeds the first preset times, a first alarm indication is output, otherwise the step of controlling the first adjustment mechanism and the second adjustment mechanism to execute the first adjustment operation for realizing dislocation recovery is continued.

[0017] In a possible implementation manner, the first adjustment operation includes:

[0018] The first adjustment mechanism is actuated to realize that the upper arm attachment portion is lifted toward the shoulder restraint portion by a preset length;

[0019] The second adjustment mechanism is actuated to achieve a preset angle of abduction of the upper arm attachment portion relative to the hard frame.

[0020] In a possible implementation, the first alarm indication output is specifically to send a preset alarm message to the medical PDA via a wireless communication module built into the controller.

[0021] In a possible implementation manner, the process of determining whether there is currently a first abnormal pattern indicating shoulder subluxation according to the first sensing data includes:

[0022] Compare and calculate the first sensing data with the initial calibration pressure data;

[0023] If the contact pressure at the shoulder peak is determined to be abnormally reduced relative to the initial calibration pressure, it is determined that the first abnormal mode exists;

[0024] If the contact pressure at the shoulder peak is determined to be close to the initial calibration pressure, it is determined that the first abnormal mode does not exist.

[0025] In a possible implementation, the pressure sensor includes a flexible pressure sensor array, and the initial calibration pressure data is a calibration value corresponding to each sensing point in the flexible pressure sensor array;

[0026] The process of measuring and determining that the contact pressure at the shoulder peak is abnormally reduced relative to the initial calibration pressure includes:

[0027] Compare and calculate the pressure value corresponding to each sensing point in the first sensing data with the calibration value of the corresponding sensing point, and determine the change of the contact pressure of each sensing point;

[0028] When a pressure decrease occurs at a plurality of sensing points at similar locations, and the pressure decrease amplitude of at least one of the sensing points exceeds a first preset threshold, it is determined that the abnormal decrease occurs.

[0029] In a possible implementation manner, the contact pressure at the shoulder peak determined by the measurement is close to the initial calibration pressure, specifically,

[0030] Compare and calculate the pressure value corresponding to each sensing point in the first sensing data with the calibration value of the corresponding sensing point, and determine the change of the contact pressure of each sensing point;

[0031] When the absolute difference between the pressure value of each sensing point and the calibration value of the corresponding sensing point is less than or equal to the second preset threshold, it is determined that the contact pressure at the shoulder peak is close to the initial calibration pressure.

[0032] In a possible implementation manner, the initial calibration pressure data is determined based on the following method:

[0033] After the assistive device is worn, in response to an input trigger instruction indicating that the calibration condition is satisfied, the sensing value of each sensing point at the current moment is determined as the calibration value of the corresponding sensing point to obtain the initial calibration pressure data.

[0034] In a possible embodiment, the wearing bracket also has a shoulder strap structure that is detachable from the hard frame, and a fixed connecting belt structure for connecting the shoulder restraint portion and the hard frame. During the use of the auxiliary device, the shoulder strap structure and the fixed connecting belt structure are cross-arranged and connected with the hard frame and the shoulder restraint portion to achieve the wearing and fixation of the auxiliary device.

[0035] In a possible implementation manner, a soft material cushion layer for preventing pressure sores is further provided on the inner side of the shoulder strap structure, and the soft material cushion layer includes a hydrogel cushion layer.

[0036] The auxiliary device for preventing shoulder subluxation provided by the embodiment of the present application comprises a wearing bracket, a shoulder restraint portion and an upper arm attachment portion; one end of the upper arm attachment portion is connected to the upper end of the shoulder restraint portion through a first adjustment mechanism, the wearing bracket has a hard frame body that can cross and surround the waist and ribs from the front-back direction, and the hard frame body is connected to the side end of the upper arm attachment portion through a second adjustment mechanism; the auxiliary device also comprises a pressure sensor, which is arranged on the inner side of the shoulder restraint portion, and is used to sense the contact pressure information between the shoulder restraint portion and the user's shoulder; a controller is used to execute a preset control method after the auxiliary device is worn; the preset control method comprises the following steps: obtaining first sensing data carrying contact pressure information from the pressure sensor; judging whether there is a first abnormal mode indicating shoulder subluxation at present according to the first sensing data; when judging that the first abnormal mode exists, controlling the first adjustment mechanism and the second adjustment mechanism to execute a first adjustment operation for realizing dislocation recovery, and after the first adjustment operation is executed, jumping to continue the step of obtaining the first sensing data and the subsequent steps, otherwise directly continuing the step of obtaining the first sensing data and the subsequent steps. In the technical solution of the present application, based on the analysis of the pathological characteristics of shoulder subluxation, the occurrence of shoulder subluxation is determined by monitoring the change in contact pressure between the device components and the user's shoulder, and the device is automatically adjusted to perform dislocation recovery. When patients with relevant indications use the auxiliary device of the present application, when shoulder subluxation occurs, the device can efficiently determine the occurrence of subluxation and promptly adopt relevant response and recovery measures, which can effectively avoid the spread of adverse consequences, thereby meeting the prevention and protection needs of shoulder subluxation in actual scenarios.

[0037] Other advantages, objectives, and features of the present application will be described in part in the following description, and in part will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are used to provide a further understanding of the technical solution of the present application or the prior art, and constitute a part of the specification. Among them, the accompanying drawings expressing the embodiments of the present application are used together with the embodiments of the present application to explain the technical solution of the present application, but do not constitute a limitation on the technical solution of the present application.

[0039] Figure 1 This is a schematic diagram of the structure of an auxiliary device for preventing shoulder joint subluxation in one embodiment of the present application;

[0040] Figure 2 for Figure 1 A schematic diagram illustrating a control implementation block diagram of an auxiliary device for preventing shoulder subluxation in the illustrated embodiment;

[0041] Figure 3 for Figure 1 A schematic illustration of the control logic of the auxiliary device for preventing shoulder subluxation in the illustrated embodiment;

[0042] Figure 4 is a schematic diagram illustrating control logic of an auxiliary device for preventing shoulder joint subluxation in another embodiment;

[0043] Figure 5 This is a schematic diagram of a partial structure of an auxiliary device for preventing shoulder joint subluxation in another embodiment of the present application;

[0044] Figure 6 for Figure 5 A schematic diagram illustrating the control logic in one implementation of the embodiment shown;

[0045] Figure 7 for Figure 5 A schematic diagram illustrating control logic in another implementation mode of the embodiment shown;

[0046] In the figure,

[0047] 10-wearing bracket; 11-hard frame; 12-back strap structure; 13-fixed connecting belt structure;

[0048] 20-shoulder restraint portion; 30-upper arm attachment portion; 40-first adjustment mechanism; 50-second adjustment mechanism; 60-pressure sensor; 70-controller;

[0049] 80 - forearm supporting portion; 90 - third adjusting mechanism. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0051] As described in the background technology, shoulder subluxation in stroke patients is one of the main complications of hemiplegia. In the early stage of stroke, patients usually show paralysis of the shoulder girdle muscles, decreased muscle tone, and downward prolapse of the upper limbs, which makes the shoulder joint capsule and ligaments loose and pulled; when the patient is sitting or standing, due to the effect of gravity, the humeral head slides down from the glenoid cavity, resulting in shoulder subluxation; after the relaxation period, with the onset of spasm, the scapula is retracted and the humeral head is adducted and internally rotated, further affecting the coordinated movement of the shoulder joint, resulting in compression and pain in the shoulder soft tissue during movements such as lifting and abduction.

[0052] In the process of realizing the present invention, the inventors found that the shoulder injury protection devices used in the existing related technologies are generally aimed at situations after fractures of the shoulder joint and upper arm, and can only play the role of protecting the shoulder or fixing the alignment relationship of the shoulder joint (articular head and glenoid cavity). They lack protective measures aimed at the pathological characteristics of shoulder subluxation and cannot be well applied to the prevention of shoulder subluxation.

[0053] In view of this, in order to at least overcome the problems existing in the related art to a certain extent, the present application proposes an auxiliary device for preventing shoulder subluxation. According to the pathological characteristics of shoulder subluxation, a specific device configuration is adopted to meet the needs of preventing and protecting shoulder subluxation in actual scenarios.

[0054] like Figures 1 to 3 As shown, in one embodiment, the auxiliary device for preventing shoulder subluxation proposed in the present application includes a wearing bracket 10, a shoulder restraint portion 20 and an upper arm attachment portion 30; one end of the upper arm attachment portion 30 is connected to one end of the shoulder restraint portion 20 through a first adjustment mechanism 40. Generally speaking, the one end here refers to the end away from the neck. The wearing bracket 10 has a hard frame 11 that can cross and surround the waist and ribs from the front and back directions. The hard frame 11 is connected to the side end of the upper arm attachment portion 30 through a second adjustment mechanism 50; Figure 2 As shown, the auxiliary device also includes:

[0055] The pressure sensor 60 is disposed on the inner side of the shoulder restraint portion 20 ( Figure 1 (not shown) for sensing contact pressure information between the shoulder restraint 20 and the user's shoulder;

[0056] The controller 70 is used to execute a preset control method after the auxiliary device is worn. In practice, the controller 70 can be attached to the auxiliary device, such as mounted on a hard frame, to achieve transmission of electrical signals by wire or wireless means. Based on usage requirements, the controller can adopt relevant interactive control settings, such as control buttons, touch screens, etc., which are not specifically limited in this application;

[0057] Combination Figure 3 As shown, the preset control method in this embodiment includes the following steps:

[0058] Step S301, obtaining first sensing data carrying contact pressure information from the pressure sensor 60;

[0059] Step S302, judging whether there is a first abnormal pattern indicating shoulder subluxation according to the first sensing data;

[0060] When it is determined that the first abnormal mode exists, step S303 is performed to control the first adjustment mechanism and the second adjustment mechanism to perform a first adjustment operation for realizing dislocation recovery, and after the first adjustment operation is completed, the process jumps to the step of obtaining the first sensing data and subsequent steps, that is, jumps to step S301 and subsequent steps;

[0061] Otherwise, directly continue with the step of acquiring the first sensing data and the subsequent steps, that is, Figure 3 The execution branch of the negative judgment link.

[0062] It should be noted here that, based on the inventor's observation and analysis of shoulder subluxation, when a patient has subluxation, the acromion on the side where the dislocation occurs will have an abnormal depression relative to the normal situation. This depression is not easy to detect with the human eye, but for machinery and equipment, it is obviously possible to determine the occurrence of shoulder subluxation by sensing the occurrence of this depression, and then take relevant countermeasures.

[0063] On this basis, considering the application scenario of the present application as a protective device, comprehensively considering the scenario requirements and the technical implementation cost, the method of sensing contact pressure is adopted here to realize the occurrence of shoulder subluxation. For example, in this embodiment, a pressure sensor is set on the inner side of the shoulder restraint part to realize the acquisition of relevant contact pressure information.

[0064] In this embodiment, as a specific implementation method, a pressure sensor may be provided at a position corresponding to the acromion region on the inner side of the shoulder restraint portion to obtain first sensing data carrying contact pressure information, and then determine the first abnormal mode indicating shoulder joint subluxation in the following manner:

[0065] The first sensing data is compared and calculated with the initial calibration pressure data. It is easy to understand that the initial calibration pressure data here refers to the contact pressure value between the shoulder restraint part and the acromion of the patient under normal conditions;

[0066] The actual sensing data is compared and calculated with the calibrated value. If the measurement determines that the contact pressure at the shoulder peak is abnormally reduced relative to the initial calibrated pressure, it is determined that the first abnormal mode exists;

[0067] If the contact pressure at the shoulder peak is determined to be close to the initial calibration pressure, it is determined that the first abnormal mode does not exist.

[0068] It should be noted here that in actual scenarios, after the patient wears the assistive device, even under normal circumstances, the contact pressure between the shoulder restraint and the patient's shoulder fluctuates; taking this situation into consideration, in order to ensure the actual usability of the device and avoid misjudgment, the control logic is implemented with the logic set to reduce and approximate the abnormality.

[0069] For example, abnormal reduction can be judged by the amplitude of the sensing value being less than the calibration value being greater than a preset value A; correspondingly, closeness can be achieved by the absolute difference between the sensing value and the calibration value (i.e. the absolute value of the difference) being less than or equal to another preset value B, where the preset value A is obviously greater than the preset value B.

[0070] By using the above-mentioned single-point pressure sensor implementation method, the auxiliary device can recognize and judge the subluxation. On this basis, the inventor further studied and analyzed the application scenarios of this application and found that in practice, when wearing the auxiliary device, ideally, a single-point pressure sensor is used. During the wearing process, the pressure sensor set on the shoulder restraint part needs to be opposite to the acromion area of ​​the corresponding patient to ensure the effective sensing and monitoring purpose. This requires more adjustment time during the wearing process of the device, and has more stringent design requirements for the shape structure of the shoulder restraint part, which will undoubtedly lead to more product production cost investment and more time cost in use; even so, in the implementation scenario of this application, due to individual differences in individual patients, the single-point pressure sensor may not match the position of the patient's acromion area, which may lead to defects such as sensing abnormalities.

[0071] In view of this, in order to improve the applicability of auxiliary device products and balance the relevant costs of the products, as a preferred implementation, the pressure sensor can adopt a flexible pressure sensor array, and accordingly, the initial calibration pressure data is the calibration value corresponding to each sensing point in the flexible pressure sensor array;

[0072] In this embodiment, the process of measuring and determining that the contact pressure at the shoulder peak is abnormally reduced relative to the initial calibration pressure includes:

[0073] Compare and calculate the pressure value corresponding to each sensing point in the first sensing data with the calibration value of the corresponding sensing point, and determine the change of the contact pressure of each sensing point;

[0074] When pressure decreases at multiple sensing points in similar positions, and the pressure decrease at at least one of the sensing points exceeds a first preset threshold, it is determined that an abnormal reduction has occurred. In actual implementation, the sensors at each point in the sensor array can be numbered in rows and columns based on their positions. In implementation, the positional distance relationship of the source of the sensing value can be identified based on the number, thereby realizing the above-mentioned logical judgment. This abnormal reduction judgment implementation method can obviously avoid the defects of the previous single-point sensor.

[0075] Accordingly, in this implementation mode, the contact pressure at the shoulder peak is measured and determined to be close to the initial calibration pressure, specifically,

[0076] Compare and calculate the pressure value corresponding to each sensing point in the first sensing data with the calibration value of the corresponding sensing point, and determine the change of the contact pressure of each sensing point;

[0077] When the absolute difference between the pressure value at each sensing point and the calibration value of the corresponding sensing point is less than or equal to the second preset threshold, it is determined that the contact pressure at the shoulder is close to the initial calibration pressure. Similarly, to avoid confusion and false alarms, the second preset threshold here is smaller than the first preset threshold.

[0078] The following is an explanation of the process of determining the initial calibration pressure data. The initial calibration pressure data is a reference value for judging the implementation, which is directly related to the implementation effect of the overall solution. The value of this data can be determined through relevant laboratory tests, and its range can be determined based on the test data, and then preset in the product controller.

[0079] However, considering that the auxiliary device has different wearing processes during use, due to the different operating techniques of medical staff and individual patients, the contact pressure between the shoulder restraint part and the patient's shoulder corresponding to the normal situation must be different. Obviously, the initial calibration pressure data here should be different, and the method of experimental analysis and induction may not be exactly practical. This kind of early research and development investment is also a waste. Therefore, in some embodiments, the determination process of the initial calibration pressure data is carried out as an independent link in the use of the device to avoid this defect;

[0080] Specifically, in the case of using a flexible sensor array, the initial calibration pressure data can be determined based on the following method:

[0081] After the assistive device is worn, the medical staff determines that the patient is in normal condition and the device is worn normally, meets the calibration conditions and issues corresponding instructions. For example, a relevant button can be set on the controller, and the medical staff presses the button to issue the instruction. As for the controller, based on the relevant configuration, in response to the trigger instruction representing that the input meets the calibration conditions, the sensing value of each sensing point at the current moment is determined as the calibration value corresponding to the corresponding sensing point to obtain the initial calibration pressure data.

[0082] As described in the above embodiments, when it is determined that shoulder subluxation occurs, the first adjustment operation will be performed to achieve dislocation recovery. Obviously, the operation here is to simulate the response operation of medical staff in similar situations; according to the analysis and research on the pathological characteristics of shoulder subluxation, the first adjustment operation here includes:

[0083] The first adjustment mechanism 40 is actuated to lift the upper arm attachment portion 30 toward the shoulder restraint portion 20 by a preset length;

[0084] The second adjustment mechanism 50 is actuated to achieve a preset angle of extension of the upper arm attachment portion 30 relative to the hard frame 11 .

[0085] It should be noted that the specific implementation method of the first and second adjustment structures is not limited in the present application. It is only necessary to realize the required lifting and extension functions. For example, the second adjustment mechanism can be implemented by an electric push rod, one end of the push rod is hinged to the hard frame through the base, and the first adjustment mechanism is implemented by a stepping motor, a joint winding structure and a traction belt.

[0086] With the above-mentioned arrangement of the first adjustment operation, the attachment is Figure 3 As shown, it can be seen that the control logic in the technical solution of the present application is a process of judgment, step adjustment, and re-judgment as a whole. The amplitude of the step adjustment in this process can be set according to the actual scene requirements, such as the preset length is 2cm, the preset angle is 5 degrees, etc.

[0087] It is easy for those skilled in the art to understand that Figure 3 In the control logic implementation shown, if the first abnormal mode occurs and the first adjustment operation is performed, the adjustment will not stop until the adjustment is actually effective, that is, the first abnormal mode no longer exists. Generally speaking, after performing such adjustment once or twice, the abnormality can be eliminated;

[0088] However, considering the complexity of the actual scenario, various factors may cause the adjustment to fail to stop due to equipment failures such as sensor sensing anomalies, and special physical signs of individual patients, resulting in the continued adjustment and causing the equipment to harm the human body.

[0089] In view of this, in practice, the adjustment range can be limited, that is, a limit value can be set, such as setting length and angle limit sensors on the hardware, and stopping the above abnormal adjustment by triggering these sensors; however, the inventor has further analyzed the application scenario of this application and believes that the application scenario of this application belongs to the field of medical care. This implementation method is completely based on the perspective of the equipment, ignoring the position and relationship of the patient and medical staff in the scene, increasing the cost of the product and having a certain degree of uncontrollability, and is not a preferred choice that meets the needs of this application;

[0090] Therefore Figure 3 Based on the control logic shown, as a preferred implementation, Figure 4 As shown, after determining that there is a first abnormal mode, before controlling the first adjustment mechanism and the second adjustment mechanism to perform a first adjustment operation for realizing dislocation recovery, it also includes a step of determining the number of times the first adjustment operation is performed;

[0091] When it is determined that the number of executions of the first adjustment operation exceeds the first preset number, a first alarm indication is output, otherwise the step of controlling the first adjustment mechanism and the second adjustment mechanism to execute the first adjustment operation for realizing dislocation recovery is continued.

[0092] In the above process, the first preset number of times can be set based on the amplitude of each adjustment step in the actual scene, the initial wearing situation of the actual patient and other factors. For example, when the preset length is 2 cm and the preset angle is 5 degrees, the medical staff judges based on experience that there is a large adjustment margin when the patient wears it normally. The first preset number of times can be set larger, such as 3 times; or considering the maximum controllability, it can also be set to 1 time, that is, automatically adjust once, and if it is still abnormal, the first alarm indication output is performed;

[0093] It is also easy to understand that, in the actual implementation process, the counting number of executions can be achieved by setting a counting variable, and the reset of the variable, combined with the actual application, should be achieved by manually triggering the reset.

[0094] The following is an explanation of the implementation method of the first alarm indication output. Taking into account the current development trend of medical informatization and factors such as meeting the needs of medical and nursing work management in the scene, such as workload measurement, a specific implementation method is used. The implementation method of the first alarm indication output is to send a preset warning message to a medical PDA (Personal Digital Assistant) through the wireless communication module built into the controller, so that the corresponding medical staff can manually respond and handle it.

[0095] To facilitate understanding of the technical solution of the present application, the solution is briefly described below from the perspective of structural arrangement.

[0096] like Figure 1 As shown, in order to realize the wearing of the device, the wearing bracket 10 also has a shoulder strap structure 12 that is detachable from the hard frame, and a fixed connecting belt structure 13 for connecting the shoulder restraint part 20 and the hard frame 11. During the use of the auxiliary device, the shoulder strap structure 12 and the fixed connecting belt structure 13 are cross-arranged and connected with the hard frame 11 and the shoulder restraint part 20 to realize the wearing and fixing of the auxiliary device. Figure 1 The figure is a schematic diagram of the front view of the human body after the device is worn. The cross arrangement mentioned in the above description refers to the cross connection between the fixed connecting belt structure 13 and the brace structure 12 on the back of the human body, which is similar to the connection and fixing method of brace pants, and the device is firmly worn through multi-point connection.

[0097] As for the specific implementation structure and setting method of the shoulder restraint part and the upper arm attachment part, no specific limitation is made in this application. Based on the description of the above embodiments in this application, those skilled in the art can know that for these two components, similar structural components in related shoulder joint protectors, human exoskeletons and other products can be used to implement them in practice.

[0098] Furthermore, under the above-mentioned structural arrangement, in order to improve comfort and avoid the occurrence of pressure sores, a soft material cushion layer can be provided at the contact point between the device and the human body. Taking into account the actual force conditions and avoiding the influence on pressure sensing, as a specific implementation method, a soft material cushion layer for preventing the occurrence of pressure sores is provided on the inner side of the shoulder strap structure 12, and the type of the soft material cushion layer can be a hydrogel cushion layer.

[0099] In the technical solution of the present application, based on the analysis of the pathological characteristics of shoulder subluxation, the occurrence of shoulder subluxation is determined by monitoring the change in contact pressure between the device components and the user's shoulder, and the device is automatically configured to perform adjustment operations for dislocation recovery, and the configuration and control logic used in the above-mentioned embodiments are adopted. When patients with relevant indications use the auxiliary device of the present application, when shoulder subluxation occurs, the device can efficiently determine the occurrence of subluxation and promptly adopt relevant response and recovery measures, which can effectively avoid the spread of adverse consequences, thereby meeting the prevention and protection needs of shoulder subluxation in actual scenarios.

[0100] Based on the above embodiments, it can be known that the inventive concept is to determine the occurrence of shoulder subluxation by monitoring the change in contact pressure between the device components and the user's shoulder, and correspondingly make the device automatically perform the adjustment operation for dislocation recovery, which can effectively avoid the spread of adverse consequences, thereby meeting the prevention and protection needs of shoulder subluxation in actual scenarios. However, in actual scenarios, the inventors conducted further in-depth research on this adjustment operation and found that when using this adjustment method, there will be other problems of improper adjustment for some specific patients, that is, there is a possibility of causing muscle spasms and brachial plexus compression in patients. In view of the defects that may be caused by implementing the above-mentioned adjustment method for shoulder subluxation, the present application has further improved the scheme based on the above-mentioned embodiments, and this will be introduced and explained in conjunction with the embodiments below.

[0101] Based on the above embodiments, in one embodiment, the combination Figure 1 ,like Figure 5 As shown, the auxiliary device also includes:

[0102] The forearm supporting portion 80 is rotatably connected to the upper arm attachment portion 30 via a third adjustment mechanism 90;

[0103] It also includes a surface electromyography and nerve conduction velocity sensing module (not shown in the figure), which is used to sense the surface electromyography information and nerve conduction velocity information of the upper limbs of the user wearing the assistive device. The technical principle of the surface electromyography and nerve conduction velocity sensing module is similar to that of the existing surface electromyograph, which is based on the application of stimulation electrodes and reference electrodes to the corresponding limbs of the user to realize the sensing of surface electromyography information in a passive manner, and realize the measurement of nerve conduction velocity by actively sending low-stimulation electrical signals;

[0104] Combination Figure 4 ,like Figure 6 As shown, after performing the first adjustment operation, before jumping to the step of acquiring the first sensing data and the subsequent steps, the controller 70 is further configured to perform the following control method:

[0105] Based on the electrical connection between the controller and the surface electromyography and nerve conduction velocity sensing module, second sensing data carrying surface electromyography information and nerve conduction velocity information is obtained from the surface electromyography and nerve conduction velocity sensing module;

[0106] determining, according to the second sensing data, whether there is currently a second abnormal pattern indicating muscle spasm and / or brachial plexus compression of the user;

[0107] When it is determined that the second abnormal mode exists, the second adjustment mechanism and the third adjustment mechanism are controlled to perform a second adjustment operation for eliminating the second abnormal mode, and after the second adjustment operation is completed, the step of obtaining the second sensing data and subsequent steps are skipped.

[0108] Otherwise, the process jumps to the step of acquiring the first sensing data and subsequent steps.

[0109] That is, after performing the first adjustment operation, the detection and judgment of muscle spasm and nerve compression is added based on the surface electromyography and nerve conduction velocity information. When it is determined that such a situation occurs, a corresponding adjustment operation is performed to eliminate the abnormality.

[0110] According to the pathological analysis of the second abnormal pattern, as a specific implementation, the second adjustment operation can be implemented in the following manner, that is, the second adjustment operation includes:

[0111] The second adjustment mechanism is actuated to achieve a second preset angle of extension of the upper arm attachment portion relative to the hard frame;

[0112] The third adjustment mechanism is actuated to realize the external rotation of the forearm support portion relative to the upper arm attachment portion to a third preset angle, that is, the external rotation of the elbow joint is unfolded;

[0113] As for the structural arrangement adopted by the third adjustment mechanism here, this application does not make any specific limitations here. It only needs to be able to perform the rotation and expansion function. For example, it can be implemented by adopting similar mechanisms such as the forearm internal and external rotation mechanism in the prior patent 202110043419.5.

[0114] Further, similarly, as mentioned above, considering the complexity of the actual scenario, the second adjustment operation should also be restricted by relevant technical means. Specifically, Figure 6 ,like Figure 7 As shown, after determining that the second abnormal mode exists, before controlling the second regulating mechanism and the third regulating mechanism to perform the second regulating operation for eliminating the second abnormal mode, it also includes a step of determining the number of times the second regulating operation is performed;

[0115] When it is determined that the execution times of the second adjustment operation exceed the second preset times, a second alarm indication is outputted, otherwise the second adjustment mechanism and the third adjustment mechanism are continuously controlled to execute the steps for eliminating the second adjustment operation.

[0116] In the above process, the second preset number, the second and third preset angles can be set according to actual needs. Similarly, the second alarm indication output here can also be transmitted to the medical PDA based on wireless communication to meet the needs in actual scenarios.

[0117] To facilitate understanding of the technical solution of the present application, the following briefly introduces the arrangement of the surface electromyography and nerve conduction velocity sensing module, as well as the judgment logic of the second abnormal mode.

[0118] In some embodiments, considering the requirements for device integration, the stimulation electrode of the surface electromyography and nerve conduction velocity sensing module is arranged on the inner side of the upper arm attachment part, while the reference electrode of the surface electromyography and nerve conduction velocity sensing module is arranged on the inner side of the distal end of the forearm supporting part, that is, after the device is worn, the reference electrode is arranged closer to the end of the limb.

[0119] In some embodiments, the second sensing data includes surface electromyography signal monitoring data and nerve conduction velocity monitoring value data;

[0120] The process of judging whether there is a second abnormal mode indicating muscle spasm and / or brachial plexus compression of the user according to the second sensing data includes:

[0121] Analyze the signal characteristics of the surface electromyography signal monitoring data, determine whether the signal has abnormal fluctuations representing muscle spasms based on the zero-crossing characteristics and amplitude characteristics of the signal obtained by the analysis, and compare the nerve conduction velocity monitoring data with the preset threshold data for judgment;

[0122] When it is determined that there is an abnormal fluctuation and / or when it is determined that the nerve conduction velocity monitoring value data is less than a preset threshold data, determining that the second abnormal mode exists;

[0123] When it is determined that there is no abnormal fluctuation and the nerve conduction velocity monitoring value data is greater than or equal to the preset threshold data, determining that the second abnormal mode does not exist;

[0124] The judgment logic of the above-mentioned abnormal fluctuations is configured and set based on the characteristics of the surface electromyography signal sEMG (Surface Electromyography). When the number of zero-crossing points of the signal waveform exceeds a certain number within a time window and the corresponding amplitude exceeds a certain value, that is, when the data is presented in the form of surface electromyography, the envelope line appears to be spindle-shaped, indicating that muscle spasm has occurred. The specific values ​​of the certain number, certain value and preset threshold data here can be referred to relevant medical research literature and summarized through experiments, and then pre-configured. This application will not further elaborate on this here.

[0125] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by any person familiar with the technology within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An auxiliary device for preventing shoulder subluxation, characterized in that: The wearable support comprises a wearing support, a shoulder restraint portion and an upper arm attachment portion; the upper end of the upper arm attachment portion is connected to one end of the shoulder restraint portion through a first adjustment mechanism, the wearing support comprises a hard frame body that can span and surround the waist and ribs from the front and back directions, and the hard frame body is connected to the side end of the upper arm attachment portion through a second adjustment mechanism; The device also includes: a pressure sensor disposed on the inner side of the shoulder restraint portion, for sensing contact pressure information between the shoulder restraint portion and the shoulder of the user; and a controller, for executing a preset control method after the assistive device is worn; The preset control method includes the following steps: obtaining first sensing data carrying the contact pressure information from the pressure sensor; judging whether there is a first abnormal mode indicating shoulder joint subluxation according to the first sensing data; when judging that there is the first abnormal mode, controlling the first adjustment mechanism and the second adjustment mechanism to perform a first adjustment operation for realizing dislocation recovery, and after the first adjustment operation is completed, jumping to the step of obtaining the first sensing data and subsequent steps, otherwise directly continuing to perform the step of obtaining the first sensing data and subsequent steps; The first adjustment operation includes: the first adjustment mechanism is actuated to realize that the upper arm attachment portion is lifted toward the shoulder restraint portion by a preset length; the second adjustment mechanism is actuated to realize that the upper arm attachment portion is abducted to a preset angle relative to the hard frame; The process of judging whether there is a first abnormal mode indicating shoulder joint subluxation according to the first sensing data includes: comparing and calculating the first sensing data with the initial calibration pressure data; if the measurement determines that the contact pressure at the acromion is abnormally reduced relative to the initial calibration pressure, determining that the first abnormal mode exists; Wherein, the pressure sensor includes a flexible pressure sensor array, and the initial calibration pressure data is the calibration value corresponding to each sensing point in the flexible pressure sensor array; the process of measuring and determining that the contact pressure at the shoulder peak is abnormally reduced relative to the initial calibration pressure includes: comparing and calculating the pressure value corresponding to each sensing point in the first sensing data with the calibration value of the corresponding sensing point, respectively, to determine the change of the contact pressure of each sensing point; when a plurality of sensing points at similar positions all experience a pressure reduction, and the pressure reduction amplitude of at least one sensing point exceeds a first preset threshold, it is determined that the abnormal reduction occurs; Among them, the initial calibration pressure data is determined based on the following method: after the auxiliary device is worn, in response to an input trigger instruction representing that the calibration conditions are met, the sensing value of each sensing point at the current moment is determined as the calibration value of the corresponding sensing point to obtain the initial calibration pressure data.

2. The auxiliary device for preventing shoulder subluxation according to claim 1, wherein: After determining that the first abnormal mode exists, before controlling the first adjustment mechanism and the second adjustment mechanism to perform a first adjustment operation for realizing dislocation recovery, the method further includes a step of determining the number of times the first adjustment operation is performed; When it is determined that the execution times of the first adjustment operation exceeds the first preset times, a first alarm indication is output, otherwise the step of controlling the first adjustment mechanism and the second adjustment mechanism to execute the first adjustment operation for realizing dislocation recovery is continued.

3. The auxiliary device for preventing shoulder subluxation according to claim 2, wherein: The first alarm indication output is specifically to send a preset alarm message to the medical PDA through the wireless communication module built into the controller.

4. The auxiliary device for preventing shoulder subluxation according to claim 1, wherein: The process of judging whether there is a first abnormal pattern indicating shoulder subluxation according to the first sensing data, further includes: Compare and calculate the first sensing data with the initial calibration pressure data; If the contact pressure at the shoulder peak is determined to be close to the initial calibration pressure, it is determined that the first abnormal mode does not exist.

5. The auxiliary device for preventing shoulder subluxation according to claim 4, wherein: The contact pressure at the shoulder peak determined by the measurement is close to the initial calibration pressure, specifically, Compare and calculate the pressure value corresponding to each sensing point in the first sensing data with the calibration value of the corresponding sensing point, and determine the change of the contact pressure of each sensing point; When the absolute difference between the pressure value of each sensing point and the calibration value of the corresponding sensing point is less than or equal to the second preset threshold, it is determined that the contact pressure at the shoulder peak is close to the initial calibration pressure.

6. The auxiliary device for preventing shoulder subluxation according to claim 1, wherein: The wearing bracket also has a shoulder strap structure that is detachable from the hard frame, and a fixed connecting belt structure for connecting the shoulder restraint portion and the hard frame. During the use of the auxiliary device, the shoulder strap structure and the fixed connecting belt structure are cross-arranged and connected with the hard frame and the shoulder restraint portion to achieve the wearing and fixation of the auxiliary device.

7. The auxiliary device for preventing shoulder subluxation according to claim 6, wherein: A soft material cushion layer for preventing pressure sores is also provided on the inner side of the shoulder strap structure, and the soft material cushion layer includes a hydrogel cushion layer.

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