A restraint device and method for a restless patient

Abstract

The present invention relates to a restraint device and method for a restless patient, the restraint device comprising a wearable device that can be worn on the patient's hand, and a locking component and a sensor are arranged on the wearable device at positions corresponding to the patient's finger joints. The restraint device is connected to the control module data. A restraint method in which the control module selectively controls the working state of the locking component based on the detection data of the sensor is used to control the freedom of movement of the patient's hand to limit the range of movement of various parts of the patient's hand. The restraint device can provide targeted restraint strategies to the patient according to the patient's risk level. When using the restraint device to provide restraint to the patient to ensure the normal implementation of the treatment process, the patient's psychological emotions can be taken care of simultaneously to reduce the risk of psychological disorders in the patient. Compared with mechanical forced fixation at a fixed angle, the restraint device can reduce the mechanical damage to the patient and improve the flexibility of use of the restraint device.

Description

Technical Field

[0001] The present invention relates to the technical field of medical auxiliary equipment, and in particular to a restraint device and method for a restless patient. Background Art

[0002] Protective restraint refers to a mandatory medical protection measure that medical staff implements urgently to limit the patient's behavior and activities to the maximum extent according to the special conditions of the patient's condition during the medical treatment process in the psychiatric department and ICU. It is one of the methods for treating and caring for such special patients. Protective restraint can minimize the harm to patients caused by other unexpected factors, protect the safety of the patient himself and the people around him, prevent damage to public property, and temporarily stabilize the patient's emotions to prevent accidents and ensure the smooth progress of nursing work.

[0003] In clinical medicine, the use of protective restraints is very common in order to protect patients who are critically ill but restless and to prevent them from falling from bed, trauma, scratches, and extubation. Zhu Shengchun et al. investigated the use of physical restraints in the ICU of a hospital and found that the use rate of physical restraints was 39.04% for one or more times, 41.13% for patients who did not wake up from general anesthesia, 73.76% for patients with endotracheal intubation, and 46.81% for patients in neurosurgery. Studies have reported that the rate of reintubation after unplanned extubation in the ICU is 31%-74%, and reintubation increases the risk of infection for patients. Therefore, preventive physical restraints are often used for patients with unclear consciousness and mental agitation in my country.

[0004] For example, a Chinese patent with patent number CN104306093B discloses a transparent restraining protective glove, comprising a glove body, a wrist fixing body, and a restraining belt, wherein the restraining belt is installed on the wrist fixing body, the glove body comprises a palm layer, and a back-of-hand layer of the same shape as the palm layer, the palm layer and the back-of-hand layer are connected by a zipper; the back-of-hand layer is a transparent soft plastic layer, and the transparent soft plastic layer is provided with honeycomb-shaped air holes; the wrist fixing body comprises a lower fixing block connected to the palm layer and an upper fixing block connected to the back-of-hand layer, the upper fixing block comprises an upper buffer cotton block and a lower buffer cotton block, the upper buffer cotton block is hinged to the lower buffer cotton block, and semicircular upper guide grooves are provided at the end faces of the upper buffer cotton block and the lower buffer cotton block, and the end faces of the lower buffer cotton block corresponding to the upper buffer cotton block are provided with semicircular lower guide grooves, and the upper guide grooves correspond to the lower guide grooves. The device involved in the above patent is set on the patient through a wrist fixing body, and is connected to a fixed structure such as a bed through a wrist restraint to restrain the patient. However, restraining the patient in this way has poor stability. The patient's palm can easily turn over in the glove body, and then the patient can use his fingers to untie the wrist restraint from one side of the soft plastic layer to get rid of the restraint. The restraint effect is very limited.

[0005] In order to solve the problem that the patient's palm can easily escape by turning over in the glove body, a Chinese patent with patent number CN215385002U also discloses an anti-extubation restraint glove, including a glove body and a hard support plate, wherein the glove body has a plurality of finger sleeves corresponding to human fingers; the hard support plate is fixed on the palm surface of the glove body, and the hard support plate at least covers the finger sleeves to prevent the fingers inserted into the finger sleeves from bending downward. On the one hand, the fingers are inserted into the finger sleeves of the glove body, and the finger sleeves are used to limit the relative movement between the fingers, so that the patient's palm cannot turn over in the glove body; on the other hand, the hard support plate is used to prevent the fingers from bending downward. When the patient's hand is inserted into the finger sleeves of the glove body, the patient's fingers cannot complete the bending action due to the presence of the hard support plate, and then the patient cannot untie the restraining belt of the glove to escape, nor can the operation such as extubation be performed.

[0006] Although the above-mentioned traditional forced restraint method can restrain the patient's hands and prevent the patient's hands from turning over and escaping by themselves from untying the restraint belt, the hand posture of the patient is forced to remain in a non-resting position for a long time, and the tension of each group of muscles is in an unbalanced state, which is prone to muscle spasm. In severe cases, it may even cause peripheral nerve damage to the patient and threaten the patient's life. In the daily nursing process, in order to avoid the above situation, it is necessary to perform rehabilitation training on the patient's hands intermittently while restraining, assist the patient's joints and muscles, and ensure the blood supply to the patient's extremities. However, the above-mentioned forced restraint method cannot perform rehabilitation training on the patient's hands while wearing the restraint device. The restraint device needs to be removed first, and then the restraint device is worn again after the rehabilitation training is completed, which is very time-consuming and energy-consuming. Since the above-mentioned device is kept in a non-functional position for a long time, the number of rehabilitation training for the patient needs to be increased, and repeated removal and wearing greatly occupy the nursing time of the nursing staff; especially after removing the restraint device, the patient's limbs are in a free state. If the patient suddenly becomes agitated during the process of removing the restraint device, it is difficult for the nursing staff to control it, which may easily lead to accidents such as patient struggle, extubation, and falling from bed.

[0007] my country currently lacks unified standards for the use of physical restraints. Mandatory restraints can easily increase the incidence of post-traumatic stress in patients. Therefore, unnecessary physical restraints should be avoided as much as possible when they are not necessary. When the above-mentioned restraint devices are used, the timing of using, disabling and relaxing the restraints is mostly based on human subjective judgment, which can easily lead to improper use and abuse of the restraints. Therefore, there is a need to improve the existing restraint devices.

[0008] In addition, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making the present invention, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the present invention does not have the characteristics of these prior arts. On the contrary, the present invention already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Summary of the invention

[0009] In view of the shortcomings of the prior art, the present invention provides a restraint device and method for a restless patient, which can restrain the patient's hands on the bed, and allow the patient's hands to move freely within a safe range while restricting the movement of at least one of the patient's wrists, palms or fingers in a prohibited area, so as to prevent the patient from extubating, untying the restraint belt, and getting out of bed, etc. While providing restraint for the patient, the present invention can provide the patient with sufficient freedom of movement, so as to alleviate the psychological barriers of the restrained patient and improve the comfort of the restrained patient.

[0010] The specific technical solutions are as follows:

[0011] A restraint device for an agitated patient, comprising a wrist fixing component fixed to the patient's wrist, the wrist fixing component being connected to a bed, and when the patient's wrist is located in the wrist fixing component, the patient's hand is restricted on the bed; the restraint device also comprises a palm fixing component and a finger fixing component, the wrist fixing component being movably connected to the palm fixing component, and the finger fixing component being movably connected to the palm fixing component.

[0012] A first sensor is provided at the connection between the wrist fixing component and the palm fixing component, and the first sensor is used to detect the relative angle between the wrist fixing component and the palm fixing component. When the wrist fixing component and the palm fixing component are worn on the patient's hand, the first sensor can detect the relative angle between the patient's palm and wrist, so as to judge the patient's wrist flexion movement based on the monitoring of the relative angle.

[0013] The sensor set on the patient's wrist can monitor the patient's wrist angle. When the patient is in an unconscious coma, the patient's wrist is in a normal resting position, and the patient's wrist joint is dorsiflexed 10° to 15°. According to the detection data of the patient's wrist angle, the patient's wrist movement can be judged, such as wrist dorsiflexion or flexion, so as to identify the patient's wrist flexion movement. By recording the data of the first sensor, the patient's wrist angle data within a certain period of time can also be recorded for reference by the nursing staff. During rehabilitation training, the specific stretching muscles at this angle can be relaxed, and when the patient's wrist is at an abnormal angle due to its own physiological disorder or external force, the nursing staff can observe and correct the patient's wrist angle in time to protect the patient. Micro sensors such as angle sensors are small in size and are not easy to affect the patient's free movement when set on the restraint device.

[0014] A second sensor is provided at the connection between the palm fixing component and the finger fixing component, and the second sensor is used to detect the relative angle between the palm fixing component and the finger fixing component. When the palm fixing component and the finger fixing component are worn on the patient's hand, the second sensor can detect the relative angle between the patient's fingers and palm to monitor the patient's palm flexion movement.

[0015] The second sensor can detect the relative angles of each finger and palm of the patient. When the patient needs to use his fingers to work, especially when the patient tries to bend his fingers to unfasten the wrist restraint, the patient must bend his thumb and at least one other finger to make the fingertips contact the wrist restraint and pinch the restraint to unfasten the restraint. By jointly analyzing the data of the first sensor and the data of the second sensor, the patient's palm posture information can be obtained to predict the patient's next action.

[0016] A third sensor is also provided at the connection between the joints of the finger fixing component. The third sensor is used to detect the relative angles between the patient's finger joints. When the palm fixing component is worn on the patient's hand, the third sensor can detect the bending angles of the patient's finger joints to monitor the patient's finger flexion movement.

[0017] The patient's hand posture at this time can be clearly determined by the bending of the thumb and at least one other finger, as well as the data of the first sensor and the data of the second sensor. When the patient attempts to unfasten the wrist restraint, the first sensor detects that the patient flexes his wrist, the second sensor detects that the patient's thumb and at least one other finger flex their palms, and the third sensor detects that the patient's thumb and at least one finger that has flexed their palms flex their fingers, thereby accurately determining that the patient is attempting to unfasten the wrist restraint.

[0018] The restraint device for a restless patient also includes a control module that is data-connected to the wrist fixing component, the palm fixing component, and the finger fixing component and selectively controls and locks the relative movement between the wrist fixing component and the palm fixing component or the relative movement between the palm fixing component and the finger fixing component.

[0019] The selective control lock is as follows: based on the data of the first sensor, the second sensor and the third sensor on the wearable device worn on the patient's hand, it is inferred what kind of hand posture the patient is trying to use to unlock the wrist restraint, and the lock is turned on specifically to prevent the aforementioned hand posture from being achieved, thereby specifically preventing the patient from unlocking the wrist restraint; at the same time, the patient's fingers other than the fingers required to maintain the aforementioned hand posture can still move freely without forming another hand posture trying to unlock the wrist restraint.

[0020] The “preventing the aforementioned hand gesture from being achieved” means: limiting the degree of completion of the aforementioned hand gesture by controlling the strength of the lock.

[0021] Compared with forced restraint, this setting method allows the patient to still control the hand movement by himself, but due to the existence of selective locking, the patient's hand cannot fully reach the aforementioned hand posture, that is, the hand can still freely change within the hand posture other than the aforementioned hand posture that is fully achieved, and the hand movement is not restricted. The setting of selective locking does not completely conflict with the patient's wishes. The restriction on the completion of the patient's hand posture only prevents the patient from fully reaching the aforementioned hand posture, but before the patient fully reaches the aforementioned hand posture, the patient can still autonomously control and continue to move in the direction of completing the aforementioned hand posture. This control method has little restriction on the patient's hand freedom. This control method will not cause the patient to feel the degree of freedom restriction before the patient reaches the aforementioned hand posture, which greatly takes care of the patient's psychological emotions.

[0022] According to a preferred embodiment, the control module is configured to selectively lock the relative movement between the wrist fixing component and the palm fixing component and the relative movement between the palm fixing component and the finger fixing component according to the following method:

[0023] In response to the detection angle of the first sensor being greater than a first threshold, the control module determines that the patient has a wrist flexion movement, and selectively locks the relative movement between the palm fixing part and the finger fixing part and the relative movement of each joint of the finger fixing part, so that the patient cannot fully complete palm flexion or can fully complete palm flexion but cannot fully complete finger flexion when the wrist is flexed. Preferably, the first threshold is 15°.

[0024] According to a preferred embodiment, the lock has a first-level lock and a second-level lock, the strength of the second-level lock is greater than the strength of the first-level lock, and the second-level lock is opened by forced release of the first-level lock.

[0025] Preferably, the control module limits the relative angle between the palm fixing part and the finger fixing part with a first-level lock when the data of the first sensor is greater than a first threshold. In the state of the first-level lock, the relative angle between the palm fixing part and the finger fixing part of the patient is limited to a first range. The first range is at most 1 / 2 of the normal range of motion. For example, the relative angle when the palm fixing part and the finger fixing part are in the same straight line is 180°, and the normal angle of motion between the palm fixing part and the finger fixing part is 90° to 180°; then the first range is 135° to 180°.

[0026] In the first-level locked state, the patient's palm and fingers can still move freely within the first range, and the first range covers the functional position, rest position and protection position of the patient's hand, that is, when the patient unconsciously adjusts his body position and increases the bending angle of the wrist, the patient's palm and fingers can adapt to the change in the wrist angle and fine-tune the relative angle, so that the patient's palm can continue to remain in the rest position, functional position and protection position without being restricted by the restraint device. However, since the restraint device is already in the first-level locked state at this time, when the first-level locked state is broken, the time for the restraint device to reach the second-level locked state can be saved.

[0027] Preferably, when the patient struggles forcefully and the movable angle between the palm fixing part and the finger fixing part exceeds the first range, the first level locking is deemed to be forcibly released, and then the control module enters the second level locking state based on the forced release. The second level locking state is to lock the bending movement of the finger fixing part, that is, to limit the bending between the joints of the finger fixing part, so that the patient cannot bend the finger.

[0028] Preferably, the second-level locking state is: locking the bending movement of the finger that breaks through the first-level locking, that is, restricting the bending movement of the finger that attempts to reach the posture of unfastening the wrist restraint, so that the finger cannot reach the aforementioned posture. When the patient breaks through the first-level locking, the movement restriction is felt. After the patient breaks through the first-level locking, the second-level locking is turned on. At this time, it is difficult for the patient's breaking through finger to bend. Compared with the first range of the first-level locking, the patient's freedom of movement is lower, and the patient feels a stronger movement restriction. Based on this, the patient is given a feedback prompt that breaking through the first-level locking is an irrational choice.

[0029] Preferably, the second level lock is reduced to the first level lock after the first time, and the patient is given the degree of freedom within the first range again. Preferably, the first time is 3 minutes.

[0030] Through repeated attempts by the patient, the patient can learn that the first-level lock cannot be broken, otherwise he will be punished with the corresponding second-level lock. By allowing the patient to feel the difference in freedom of movement between the second-level lock and the first-level lock, the patient can avoid punishment by himself and avoid breaking through the first-level lock, but move freely within the permitted range.

[0031] Preferably, the locking is accomplished by an airbag device connected to the wearable device, and strip-shaped airbags are connected to the connection between the wrist fixing part and the palm fixing part, the connection between the palm fixing part and the finger fixing part, and the finger joints of the finger fixing part, which will not affect the relative movement of the wrist fixing part, the palm fixing part, and the finger fixing part when not inflated. The strip-shaped airbags can limit the relative movement of the wrist fixing part, the palm fixing part, and the finger fixing part when inflated.

[0032] Preferably, the first-level locking state is to fill at least 50% of the volume of gas into the strip-shaped airbag, and the second-level locking state is to fill 100% of the volume of gas into the strip-shaped airbag, thereby achieving flexible locking of the patient's joints and palms.

[0033] The airbag is flexible, so there is less risk of pressure injury when the patient fights against the airbag. At the same time, the airbag is lightweight and easy for the patient to wear.

[0034] According to a preferred embodiment, the restraint device further comprises a fourth sensor for detecting electromyographic signals of the patient's arm, and the control module adjusts the locking level based on the detection data of the fourth sensor.

[0035] The control module collects and processes the detection data of the fourth sensor, calculates the trend and intensity of the detection data of the fourth sensor, and adjusts the locking level:

[0036] The control module performs a first-level lock adjustment based on the patient's agitation level (agitation levels include agitation, very agitation and dangerous agitation) according to the patient's agitation level classification; under the premise of the first-level lock adjustment, the lock is adjusted at the second level based on the changing trend of the patient's electromyographic signal.

[0037] Based on the theory of positive feedback training, the control module adjusts the locking level based on the slope of the change curve of the electromyographic signal sent by the fourth sensor received in the first cycle.

[0038] When the slope is negative and less than a second threshold, the control module weakens the locking strength of the locking component by using the first gradient value as the difference.

[0039] When the slope is positive and greater than a third threshold, the locking strength of the locking component is strengthened by using a second gradient value as a difference.

[0040] The control module selectively opens the locking component based on the detection signal of the fourth sensor, that is, when the patient is struggling on his own, the patient's movements will be accompanied by changes in the electromyographic signal, so that the control module can distinguish between the patient's autonomous movement and the involuntary joint movement driven by medical staff or rehabilitation training equipment; lock the patient when he struggles with autonomous movement; and do not lock the patient when the patient is involuntary movement driven by external force.

[0041] Preferably, the method for motion recognition of electromyographic signals is: using a double threshold endpoint detection method based on energy entropy ratio to extract effective activity segments of the signal; extracting the features of the electromyographic signal and the muscle deformation signal respectively, and fusing the extracted signal features to form a feature vector; finally, using a support vector machine recognition model based on grid search to identify the collected hand movements.

[0042] Another aspect of the present invention provides a method for restraining an agitated patient, comprising one of the following steps: limiting the relative angle between the palm fixing component and the finger fixing component by first-level locking when the data of the first sensor is greater than a first threshold;

[0043] Entering the state of the second level lock based on the forced release of the first level lock;

[0044] After maintaining the second level lock for a first time, it is lowered to the first level lock.

[0045] Another aspect of the present invention provides another method for restraining an agitated patient, comprising the following steps: the control module activates a first-level lock in response to the sensor data of one of the first sensor, the second sensor and the third sensor exceeding a threshold value;

[0046] The control module initiates a second level lock in response to data of any two of the first sensor, the second sensor, and the third sensor exceeding a threshold. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a wearing schematic diagram of a preferred embodiment of the present invention;

[0048] Figure 2 is a hierarchical diagram of the treatment interference plan (TIP).

[0049] Reference numerals list

[0050] 100: wrist fixing component; 110: first sensor; 120: first locking component; 200: palm fixing component; 210: second sensor; 220: second locking component; 300: finger fixing component; 310: third sensor; 320: third locking component. DETAILED DESCRIPTION

[0051] The following combination Figure 1 and Figure 2 Describe in detail.

[0052] Some patients with organic physical injuries may have cognitive impairment and other problems when receiving treatment. If medical staff fail to dissuade them, these patients will pull or remove various tubes or cannulas and be aggressive. In order to protect the safety of patients, physical restraints need to be implemented on them.

[0053] Case 1

[0054] A 67-year-old female patient with renal failure became agitated during treatment and was restrained with restraint gloves. However, the agitation was obvious and the restraint gloves flipped over. The patient untied the restraint gloves from the mesh and got out of bed on her own.

[0055] Case 2

[0056] A 75-year-old male patient was admitted to the hospital on November 11, 2011 due to "acute exacerbation of chronic obstructive pulmonary disease, lung infection, and coal worker's pneumoconiosis stage II". His condition worsened on the 18th and he was transferred to the ICU for emergency treatment. He underwent tracheal intubation and ventilator-assisted breathing. Due to severe agitation, he was restrained with a shoulder strap at 19:30.

[0057] Case 3

[0058] An 81-year-old female with a left femoral neck fracture was admitted to the hospital on April 9, 2017 due to a "fall" that caused left hip pain and limited activity for more than 2 months. She had a history of cerebral infarction and cerebral atrophy. The patient underwent "left hemihip catheterization" on April 14, 2017. One day after the operation, the patient was emotionally unstable and sometimes irritable. At 7:00 on April 16, the patient pulled out the negative pressure ball drainage tube indwelling in the left thigh surgical area by herself.

[0059] Case 4

[0060] The patient was a 59-year-old male weighing 80 kg. He had a history of hypertension, but his blood pressure was controllable and his preoperative examination was basically normal. He was scheduled to undergo laparoscopic cholecystectomy under general anesthesia for gallstones. Anesthesia induction: After opening the intravenous channel, 3 mg of midazolam, 0.2 mg of fentanyl, 160 mg of propofol, and 8 mg of vecuronium were injected intravenously to induce tracheal intubation. The doctor performed catheterization, inhaled 1.5% sevoflurane during the operation, and 400 mg of propofol and 1 mg of remifentanil were intravenously pumped. Vecuronium maintained muscle relaxation, and the operation went smoothly. Before the end of the operation, the inhalation of sevoflurane and the intravenous pump were stopped in sequence, and the tube was removed after atropine and neostigmine antagonism. The operation lasted 30 minutes. After extubation, the patient's blood pressure was 150 / 95 mmHg, SpO294%, and heart rate was 98 beats / min. The patient was agitated, spoke irrelevantly, and kept repeating that he wanted to "pee". Comfort was ineffective, and he had to sit up and remove the catheter by himself.

[0061] Example 1

[0062] A restraint device and method for an agitated patient, the restraint device comprising a wearable device that can be worn on the patient's hand, wherein a locking component and a sensor are provided on the wearable device at positions corresponding to the patient's finger joints. The restraint device is data-connected to a control module. The control module selectively controls the working state of the locking component based on the detection data of the sensor, thereby limiting the range of motion of various parts of the patient's hand. Such a setting method can provide targeted restraint strategies to patients according to the patient's risk level, provide strong control to dangerous agitated patients and weak control to generally agitated patients, provide restraint to patients to ensure the normal implementation of the treatment process while taking care of the patient's psychological emotions, reducing the risk of psychological disorders in patients, and relatively fixed-angle mechanical forced fixation can reduce mechanical damage to patients and improve flexibility of use.

[0063] According to a preferred embodiment, the wearable device includes a wrist fixing component 100, a palm fixing component 200, and a finger fixing component 300 connected in sequence to adapt to the hand shape of the patient. The wrist fixing component 100 is connected to the bed, and when the patient's wrist is located in the wrist fixing component 100, the patient's hand is restricted on the bed. The wrist fixing component 100 is movably connected to the palm fixing component 200, and the finger fixing component 300 is movably connected to the palm fixing component 200.

[0064] The sensor includes a first sensor 110 disposed at the connection between the wrist fixing component 100 and the palm fixing component 200, a second sensor 210 disposed at the connection between the palm fixing component 200 and the finger fixing component 300, and a third sensor 310 disposed at each joint of the finger fixing component 300. The first sensor 110 is used to detect the relative angle between the wrist fixing component 100 and the palm fixing component 200. When the wrist fixing component 100 and the palm fixing component 200 are worn on the patient's hand, the first sensor 110 can detect the relative angle between the patient's palm and wrist, so as to judge the patient's wrist flexion movement based on the monitoring of the relative angle. The second sensor 210 is used to detect the relative angle between the palm fixing component 200 and the finger fixing component 300. When the palm fixing component 200 and the finger fixing component 300 are worn on the patient's hand, the second sensor 210 can detect the relative angle between the patient's fingers and palm, so as to monitor the patient's palm flexion movement. The third sensor 310 is used to detect the relative angles between the patient's various finger joints. When the finger fixing component 300 is worn on the patient's hand, the third sensor 310 can detect the bending angles of the patient's various finger joints to monitor the patient's finger flexion movements.

[0065] The locking component includes a first locking component 120 disposed at the connection between the wrist fixing component 100 and the palm fixing component 200, a second locking component 220 disposed at the connection between the palm fixing component 200 and the finger fixing component 300, and a third locking component 320 disposed at each joint of the finger fixing component 300. When the first locking component 120 is locked, the relative movement between the wrist fixing component 100 and the palm fixing component 200 is restricted, and the restriction method is, for example, to limit the movement angle between the wrist fixing component 100 and the palm fixing component 200, that is, the angle of wrist flexion of the patient. When the second locking component 220 is locked, the relative movement between the palm fixing component 200 and the finger fixing component 300 is restricted, that is, the bending angle of the joint connecting the patient's fingers and palm is limited, and it is difficult for the patient to fully complete the palm flexion action. When the third locking component 320 is locked, the movement angle of each joint of the patient's fingers is restricted, that is, it is difficult for the patient's finger joints to be fully bent.

[0066] The locking components and sensors are both connected to the control module data, and the control module selectively controls each locking component to lock the patient's joint movement based on the sensor data.

[0067] Preferably, the control module is configured to control the locking component in the following manner:

[0068] The control module selectively locks the relative movement between the palm fixing part 200 and the finger fixing part 300 based on the data of the first sensor 110. When the patient attempts to untie the fixing belt fixed on the wrist or the connecting belt between the wrist fixing part 100 and the bed, the patient needs to flex the wrist, palm and fingers, and use at least two fingers to move the fixing belt to make the fixing belt spread out and release the restraint on the patient. The control module determines that the patient has completed the wrist flexion action based on the detection data of the first sensor 110 and prevents the patient from flexing the palm or bending the fingers, so that the patient's fingers cannot contact the connecting belt between the wrist fixing part 100 and the bed or the fixing belt fixed on the wrist, so that the patient cannot voluntarily untie the restraint and get out of bed.

[0069] Preferably, the lock comprises a first-stage lock and a second-stage lock, and the second-stage lock is unlocked by forced release of the first-stage lock.

[0070] The control module triggers the first level locking to limit the relative movement between the palm fixing part 200 and the finger fixing part 300 based on the data of the first sensor 110. In the first level locking state, the relative angle between the palm fixing part 200 and the finger fixing part 300 of the patient is limited to a first range. The first range is at most 1 / 2 of the normal movement range. For example, the relative angle when the palm fixing part 200 and the finger fixing part 300 are on the same straight line is 180°, and the normal movement angle between the palm fixing part 200 and the finger fixing part 300 is 90° to 180°; then the first range is 135° to 180°.

[0071] Preferably, when the patient struggles forcefully and the movable angle between the palm fixing part 200 and the finger fixing part 300 exceeds the first range, it is considered that the first level locking is forcibly released, and then the control module enters the second level locking state based on the forced release. The second level locking state is to lock the bending movement of the finger fixing part 300, that is, to limit the bending between the joints of the finger fixing part 300, so that the patient cannot bend the finger.

[0072] Preferably, the locking is accomplished by an airbag device connected to the wearable device, and strip-shaped airbags are connected to the connection between the wrist fixing component 100 and the palm fixing component 200, the connection between the palm fixing component 200 and the finger fixing component 300, and the finger joints of the finger fixing component 300, which will not affect the relative movement of the wrist fixing component 100, the palm fixing component 200 and the finger fixing component 300 when not inflated. When the strip-shaped airbags are inflated, the relative movement of the wrist fixing component 100, the palm fixing component 200 and the finger fixing component 300 can be limited.

[0073] Preferably, the first-level locking state can be that at least 50% of the volume of gas is filled into the strip-shaped airbag, and the second-level locking state can be that 100% of the volume of gas is filled into the strip-shaped airbag, thereby achieving flexible locking of the patient's joints and palms.

[0074] Preferably, the control module is configured to control the working state of the locking component according to the following method:

[0075] The control module starts the first level lock based on the sensor data of one of the first sensor 110, the second sensor 210 and the third sensor 310 exceeding the threshold value;

[0076] The control module starts the second level lock based on that two of the data of the first sensor 110, the second sensor 210 and the third sensor 310 exceed the threshold value;

[0077] The control module turns on the third level lock based on the three data of the first sensor 110 , the second sensor 210 , and the third sensor 310 exceeding the threshold value.

[0078] Preferably, the first level locking is to adjust the locking strength of the two of the first locking component 120, the second locking component 220 and the third locking component 320 whose sensor detection values ​​do not exceed the threshold value to 50%. For example, the airbag is filled with 50% of gas. For example, when the data of the first sensor 110 exceeds the threshold value, the control module controls the second locking component 220 and the third locking component 320 to be filled with 50% of gas respectively.

[0079] Preferably, the second-level locking is to adjust the locking strength of the one of the first locking component 120, the second locking component 220 and the third locking component 320 whose sensor detection value does not exceed the threshold value to 100%. For example, the one whose detection value does not exceed the threshold value is refilled with 50% of gas. For example, when the data of the first sensor 110 and the second sensor 210 exceed the threshold value, the control module controls the third locking component 320 to be refilled with 50% of gas.

[0080] Preferably, the third level locking is to adjust the locking strength of the first locking member 120, the second locking member 220 and the third locking member 320 to 100%. For example, the first locking member 120, the second locking member 220 and the third locking member 320 are respectively filled with gas to 100%.

[0081] Example 2

[0082] This embodiment is a further improvement on Embodiment 1, and the repeated contents will not be repeated here.

[0083] The restraint device further comprises a fourth sensor for detecting myoelectric signals of the patient, and the control module adjusts the locking level based on the detection data of the fourth sensor. The fourth sensor can be a patch-type myoelectric signal sensor.

[0084] The control module predicts the patient's movements based on the detection data of the fourth sensor, judges the patient's movement hazards based on the prediction of the patient's movements, and controls the corresponding locking components to open the joint lock in advance when the patient's movements are more harmful. Such a setting method can adapt to more scenarios than the existing mechanical fixation method. For example, when the patient is unconscious, medical staff need to assist the patient to move his hands to prevent the patient from muscle spasms or muscle rigidity. The traditional mechanical fixation method requires medical staff to first remove the mechanical fixing device to release the fixation of the patient's hands by the mechanical fixing device, and then manually rotate the patient's joints to perform rehabilitation training; after the rehabilitation training is completed, the medical staff also needs to put the mechanical fixing device on the patient again to avoid the patient's impatience after waking up. The time for disassembling and reinstalling the mechanical fixing device is almost equal to or even greater than the time for doing rehabilitation training for the patient, so there is a lot of time waste. When using this device, when the medical staff needs to perform rehabilitation training on the patient, since the patient is not actively performing rehabilitation training, the fourth sensor does not detect the electromyographic signal, the control module will not open the joint lock, and the patient's joints can move flexibly. Medical staff can directly assist patients in rehabilitation training without removing the wearable device, saving a lot of training time. When the patient suddenly wakes up during the rehabilitation training and makes a move that endangers the medical staff or himself, the control module will immediately activate the joint lock because the fourth sensor detects the patient's electromyographic signal to assist the medical staff in restraining the patient. The patient will not injure the medical staff or fall out of bed after struggling to escape the restraint due to the removal of the fixing device. Preferably, the control module is configured to control the locking of the locking component in the following manner:

[0085] The control module generates a time-dependent change curve of the electromyographic signal in the first cycle based on the electromyographic signal sent by the fourth sensor received in the first cycle, and calculates the slope of the change curve.

[0086] When the slope is negative and less than the second threshold, the control module weakens the locking strength of the locking component by the first gradient value as a difference, and strengthens the locking strength of the locking component by the second gradient value as a difference when the slope is positive and greater than the third threshold. Preferably, the second threshold is -1; the third threshold is +1.

[0087] Preferably, the first period is, for example, 1-3 minutes.

[0088] Preferably, the first gradient value is negatively correlated with the patient's agitation level. Such a setting can reduce the strength of the patient's restraint with different gradient values ​​when the patient's agitation decreases according to the risk of the patient's agitation, allowing the patient to move in a small range within a certain range. For example, when the patient's agitation level is dangerous agitation, the first gradient value is 10%; when the patient's risk level is very agitated at a lower level, the first gradient value is 20%; when the patient's risk level is a lower level of agitation, the first gradient value is 30%. While ensuring the strength of the patient's restraint, the restraint device relaxes the restraint on the patient based on the reduction of the patient's agitation, and uses this as a reward for the patient's reduced agitation. Compared with the tough behavior of maintaining restraints, this method can bring more psychological comfort to patients, induce patients to reduce agitation, and at the same time reduce mechanical damage to patients.

[0089] Preferably, the agitation level is based on the Glasgow Coma Scale (GCS). For example, 3 to 5 points are dangerous agitation, 6 to 8 points are very agitated, and 9 to 12 points are agitated. Preferably, the agitation level can also be based on the following: Figure 2 The indications for use of the Therapeutic Intervention Plan (TIP) implemented in critical care units in the United States are shown.

[0090] Preferably, the control module increases the free range of movement of the patient's hand by reducing the locking strength of the locking component, the control module adjusts the patient's maximum free range of movement based on the patient's agitation level, and the control module adjusts the locking strength of the locking component within the maximum free range of movement.

[0091] Preferably, the free range of movement is negatively correlated with the agitation grade of the agitated patient. The removal and strengthening of existing mandatory restraints are mostly judged by nursing staff based on experience, and there is a lack of consistent evaluation standards. However, there is currently a fierce controversy over the physical restraint of conscious patients. Improper use of restraint devices on conscious patients will lead to irritability and delirium in patients, and increase the incidence of accidental extubation in patients. The present application distinguishes and restrains patients based on their agitation levels, provides different restraint strengths for agitated, very agitated and dangerously agitated patients, provides sufficient space for conscious patients, and restraint devices provide more emergency protection for conscious patients rather than restraint, reducing patients' post-traumatic stress reactions; and, when the patient's agitation is relieved from dangerous agitation to very agitation or from very agitation to agitation, he can feel the expansion of the range of activities, and then encourage the patient to remain calm based on the psychological reinforcement effect to obtain greater freedom of movement, reduce the patient's emotional and power confrontation with the restraint device, and reduce the risk of patient injury.

[0092] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also belong to the disclosure scope of the present invention and fall within the protection scope of the present invention. Those skilled in the art should understand that the present invention specification and its drawings are illustrative and do not constitute a limitation of the claims. The scope of protection of the present invention is defined by the claims and their equivalents. The present invention specification contains multiple inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", all of which indicate that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the feature guided by "preferably" is only an optional method and should not be understood as a must-have setting. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A restraint device for an agitated patient, comprising a wearable device that can be worn on the patient's hand and a control module connected to the wearable device data, characterized in that: The wearable device comprises a wrist fixing component (100), a palm fixing component (200) and a finger fixing component (300) which are connected in sequence to adapt to the hand shape of the patient, and a locking component and a sensor capable of selectively controlling locking are arranged at positions of the wearable device corresponding to the finger joints of the patient and at the connection between the above-mentioned fixing components. The locking component comprises: a first locking component (120) provided at the connection between the wrist fixing component (100) and the palm fixing component (200); a second locking component (220) provided at the connection between the palm fixing component (200) and the finger fixing component (300); and A third locking component (320) provided at each joint of the finger fixing component (300); The sensor comprises: a first sensor (110) disposed at the connection between the wrist fixing component (100) and the palm fixing component (200); a second sensor (210) provided at the connection between the palm fixing component (200) and the finger fixing component (300), A third sensor (310) disposed at each joint of the finger fixing component (300) and a fourth sensor for detecting an electromyographic signal of a patient; The control module selectively opens the first locking component (120), the second locking component (220) and the third locking component (320) in a manner capable of preventing the patient from unfastening the restraint belt in response to the detection data of at least one of the first sensor (110), the second sensor (210) and the third sensor (310) being greater than a threshold value; the control module adjusts the locking level of the locking component based on the trend of the detection data of the fourth sensor.

2. The restraint device for a restless patient according to claim 1, characterized in that: The selective control lock comprises: inferring the hand posture with which the patient attempts to unlock the wrist restraint belt according to the data of the first sensor (110), the second sensor (210) and the third sensor (310) of the wearable device worn on the patient's hand, and specifically opening the lock to prevent the aforementioned hand posture from being achieved; At the same time, the patient's remaining fingers, except the fingers required to maintain the aforementioned hand posture, can still move freely without forming another hand posture attempting to untie the wrist restraint belt.

3. The restraint device for a restless patient according to claim 1 or 2, characterized in that: The lock has a first-level lock and a second-level lock, the strength of the second-level lock is greater than the strength of the first-level lock, and the second-level lock is opened based on the forced release of the first-level lock.

4. The restraint device for a restless patient according to claim 3, characterized in that: The control module activates the first level locking when the data of the first sensor (110) is greater than a first threshold value, and limits the relative angle between the palm fixing component (200) and the finger fixing component (300) to within a first range.

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