Restraint monitoring device

Abstract

This invention relates to a restraint monitoring device, comprising a strap with a first end and a second end; a first fastening unit tightens the first end and the second end, causing the strap to generate a pressure value; a pressure detection unit detects that the pressure value is lower than a set value and issues a pressure warning signal; a position detection unit detects the openness or displacement of the first fastening unit and issues a fastening warning signal; a control unit is detachably disposed on the strap, and the control unit is signal-connected to the pressure detection unit and the position detection unit to receive the pressure warning signal and the fastening warning signal, issue a warning notification, and transmit it to a remote device. This allows for quick wrapping around the limbs for monitoring.

Description

Technical Field

[0001] The present invention relates to a restraint belt device which can be quickly wrapped around the patient's limbs for monitoring, can give regular reminders, and can be used as a disposable or non-disposable restraint belt device. Prior Art

[0002] In today's medical institutions, long-term care units, homes and other places, in order to prevent patients from becoming agitated, violent, involuntarily removing tubes (needles) or self-harming, caregivers must use restraints and other devices to prevent patients from moving their limbs and hurting themselves or others, thereby maintaining the safety of the patients themselves and the caregivers around them.

[0003] The new patent case No. M537474 "Restraint Belt" announced on March 1, 2017 in the Republic of China discloses: it includes a binding unit, a fastening unit, a first connecting belt and a second connecting belt. The binding unit includes a binding piece, a first fastener and a second fastener that can be fastened with the first fastener, the fastening unit includes a third fastener arranged on the binding piece and a fourth fastener that can be interlocked with the third fastener, the first connecting belt includes a first belt body connected to the fastening unit and one of the binding pieces and a fifth fastener, the second connecting belt includes a second belt body, a sixth fastener arranged on the second belt body and detachably interlocked with the fifth fastener, and an outer ring portion, after the sixth fastener passes through an outer through hole of the outer ring portion, the second belt body and the outer ring portion can form an outer ring portion with an adjustable ring diameter and in the shape of a closed ring, the outer ring portion can be fixed on a fixed object, and can achieve the purpose of stable restraint.

[0004] Although the patent prior art is provided with a binding structure with multiple fasteners, there is no warning mechanism to notify the caregiver if the child is broken free after being bound for a long time, so it is potentially dangerous in use.

[0005] The patent case No. M542454 "Restraint device with warning effect" announced on June 1, 2017 in the Republic of China discloses: comprising: a restraint device, an elastic restraint belt, a first warning belt and a second warning belt; the restraint device is used to fix the patient; the elastic restraint belt is used to fix the patient on the bed, chair and other auxiliary equipment in conjunction with the restraint device. The elastic restraint belt is set at a certain position of the restraint device, and the two ends of the elastic restraint belt are used for combined fixing. After the restraint device fixes the patient, the elastic restraint belt can still provide the patient with a retractable elastic activity space; the The first warning belt has a non-elastic side fixed to one end of the elastic restraint belt, and a detection warning element is provided on the other side; the second warning belt has a non-elastic side fixed to the other end of the elastic restraint belt, and a detected unit is provided on the other side. The detected unit and the detection warning element can be combined by magnetic attraction and separation, so that the restraint device can fix the patient while the elastic restraint belt can provide the patient with sufficient space for activities. When the patient's activity space exceeds a preset range, the detection warning element of the first warning belt is separated from the detected unit of the second warning belt, so that a sound can be emitted to warn medical staff.

[0006] The patent prior art uses magnetic attraction to connect the detected unit and the detection warning element. Once pulled hard, it may break and issue a warning, so there is a disadvantage of false alarm.

[0007] The utility model patent case of CN203060006 "Medical restraint pressure sensing alarm device" announced on July 17, 2013 in mainland China discloses: 1. A data acquisition module for collecting numerical values; 2. A control module for judging whether the numerical value reaches a threshold value and issuing a command; 3. An alarm module for receiving a command from the control module and issuing an alarm; 4. A power module for providing power to the data acquisition module, the control module and the alarm module; the data acquisition module includes a restraint belt, a pressure sensor, an analog-to-digital converter and a single-chip microcomputer; the restraint belt includes two layers of elastic fabric, and a plurality of the pressure sensors are arranged between the two layers of elastic fabric. The method of use is to place the patient on the bed board, fix the patient by the restraint device and sense the patient's struggling intensity and frequency, collect the patient's struggling data through the data acquisition module, and then transmit the data to the control module for analysis and judgment, and finally transmit the command to the alarm module. Therefore, it has the advantages of safe use, sensitive sensing, and flexible design. It can detect patient discomfort in time, reduce the harm of unplanned extubation, and realize intelligent and personalized care for patients.

[0008] Although the patent prior art is provided with a pressure sensing device to judge whether the patient has escaped from the restraint belt after the pressure changes, the pressure sensing device, computing unit, battery and other components are all integrally provided on the restraint belt and cannot be separated at will. Therefore, the manufacturing cost of the restraint belt is relatively high, and it is impossible to clean, disinfect, or make it into a disposable or non-disposable restraint belt. It is also impossible to issue a warning at a fixed time (for example, every 2 hours) to help the patient to loosen the restraint belt. Therefore, it is still not ideal in use. Summary of the invention

[0009] In view of the above-mentioned shortcomings of the current monitoring-type restraint belt, the present invention provides a restraint monitoring device, comprising: a restraint belt having a first end and a second end; a first knot unit, which is combined with the restraint belt to tighten the first end and the second end so that the restraint belt generates a pressure value; a pressure detection unit, which is arranged on the restraint belt, the pressure detection unit detects the pressure value, and sends a pressure warning signal when the pressure value is lower than a set value; at least one position detection unit, which is arranged on the first knot unit, so as to detect the disconnection or displacement state of the first knot unit, so as to send a knot warning signal after the first knot unit is disconnected or displaced; a control unit, which is detachably arranged on the restraint belt, and the control unit is respectively connected to the pressure detection unit and the position detection unit by signal, so as to receive the pressure warning signal and / or the knot warning signal respectively to send a warning notification.

[0010] The first buckle unit is provided with a hook and loop fastener, the hook and loop fastener is fixed to the first end, the loop fastener is fixed to the second end, the hook and loop fastener passes through the loop fastener and then folds back to be bonded to the back of the hook and loop fastener.

[0011] The position detection unit is arranged between the hook and loop and sends out the knot warning signal after detecting that the hook and loop are disconnected.

[0012] The above-mentioned second knot unit is combined with the drawstring to tighten the drawstring. The position detection unit is set on the second knot unit to detect the disconnection or displacement state of the second knot unit. After the second knot unit is disconnected or displaced, the knot warning signal is issued.

[0013] The second buckle unit is provided with two male fasteners and two female fasteners. The two male fasteners are respectively fixed to the first end, the two female fasteners are respectively fixed to the second end, and the two male fasteners are respectively inserted and fixed in the two female fasteners.

[0014] The position detection unit is arranged between the two male fasteners and the two female fasteners, and sends out the knot warning signal after detecting that any one of the two male fasteners is disconnected from the two female fasteners.

[0015] The two male fasteners are respectively provided with an adjusting ring with adjustable length, so as to adjust the length of the two male fasteners respectively.

[0016] The two female fasteners are respectively provided with a locking key, and the two locking keys are respectively pressed to make the two female fasteners form a locking state to avoid accidental contact and release of the two male fasteners.

[0017] The second knot unit includes a tightening knob, a contraction rope and a plurality of rings, wherein the rings are fixed to the periphery of the drawstring, the contraction rope passes through the rings in sequence, and the two ends of the contraction rope are combined on the circumference of the tightening knob, the tightening knob is fixed to the drawstring, and the tightening knob is rotated to contract the contraction rope to tighten the drawstring.

[0018] The inner side of the strap is provided with a pad made of skin-friendly material.

[0019] The pressure detection unit is arranged on the surface of the pad body, or between the strap and the pad body.

[0020] The above-mentioned strap is provided with two corresponding fixing belts, and the ends of the two fixing belts are respectively provided with a male buckle and a female buckle with adjustable lengths, and the male buckle and the female buckle are mutually buckled to form a circle.

[0021] The above-mentioned strap is tied to any limb of a patient to generate the pressure value, and when the pressure value is lower than a set value, the pressure warning signal will be issued. The set value is the pressure that the strap bears when the limb of the patient breaks free or loosens.

[0022] The position detection unit is a pressure sensor, a photoelectric sensor, an ultrasonic sensor, a magnetic sensor, a displacement sensor or a contact sensor.

[0023] The control unit includes a computing module, a battery electrically connected to the computing module, a warning element, a wireless transmission module, a timer, a storage module and an input interface. The battery can provide the power required for the control unit to operate.

[0024] The control unit is detachably connected to a fixing base, which is fixed to the outer side of the strap, and the fixing base is signal-connected to the pressure detection unit and the position detection unit to transmit the pressure warning signal and the knot warning signal.

[0025] The above-mentioned warning notification is a sound signal or a light signal, and the warning element is a buzzer or a warning light. After the computing module receives the pressure warning signal or the knot warning signal, it controls the warning element to emit a warning sound or a warning light.

[0026] The wireless transmission module transmits the received pressure warning signal or the knot warning signal to a remote device, which is a handheld electronic device, a tablet computer or a computer.

[0027] The information of a patient's name, bed, restrained limb parts and reminder release time is input through the input interface, and the information is stored in the storage module. At the same time, the time is counted through the timer. After the reminder release time is reached, the warning notification is issued through the warning element, and the warning notification is transmitted to a remote device through the wireless transmission module.

[0028] According to the above technical features, the system has the following advantages:

[0029] 1. It can detect at any time whether the patient's limbs are detached or loose from the straps, and when they are detached or loosened, it can immediately issue a warning notification to alert the caregiver or monitor.

[0030] 2. The double tightening mechanism of the first and second buckle units can strengthen the prevention of the limbs from escaping or loosening from the straps.

[0031] 3. The control unit is designed as a detachable snap-fit mechanism, so it can be removed and separated from the strap at any time. Therefore, the control unit can be reused, so the production cost of the strap is low, and it can be cleaned at any time, or made into a disposable structure to ensure cleanliness and hygiene during use.

[0032] 4. The timer can be set and an alarm notification can be issued regularly to remind the caregiver or monitor to pay attention to the unbinding time. The patient can be untied regularly to relax the patient's limbs for activities, avoiding long-term restraints that cause discomfort to the patient's limbs.

[0033] 5. Use pressure detection and disconnection detection, as well as increase the pressure detection setting value, to confirm whether the patient's limbs are detached from or loose from the straps, so as to timely or early detect the detachment or loosening of the straps, thereby ensuring safety in use.

[0034] 6. The strap is provided with an open first end and a second end, so that it can be quickly wrapped around the patient's limbs, and cooperate with the easy-to-operate rotating tightening knob to quickly tighten the contraction rope, which can strengthen the tightening force of the strap and can be quickly tightened in a very short time to reduce the chance of being broken free by the patient during the wearing process. Simple diagram description

[0035] [Figure 1] is a three-dimensional diagram of the inner side of the strap according to the first embodiment of the present invention.

[0036] [Figure 2] is a three-dimensional diagram of the outer side of the strap according to the first embodiment of the present invention.

[0037] [Figure 3] is a configuration block diagram of the control unit of the first embodiment of the present invention.

[0038] [FIG. 4] is a schematic diagram of the hook and loop fastener of the first embodiment of the present invention after passing through the fixing ring and then folding back.

[0039] [FIG. 5] is a schematic diagram showing the male fastener of the first embodiment of the present invention being inserted into the female fastener to tighten the drawstring.

[0040] [Figure 6] is a schematic diagram of the male buckle and the female buckle of the first embodiment of the present invention being interlocked and fixed to the bed frame uprights.

[0041] [Fig. 7] is a schematic diagram showing the pressure value of the band tied around the limbs detected by the pressure detection unit of the first embodiment of the present invention.

[0042] FIG. 8 is a schematic diagram showing the structure of the second fastening unit according to the second embodiment of the present invention.

[0043] FIG. 9 is a schematic diagram of the second buckling unit of the second embodiment of the present invention before being tightened.

[0044] FIG. 10 is a schematic diagram of the second buckling unit of the second embodiment of the present invention being rotated and contracted and tightened. Implementation

[0045] Please refer to the first, second and third figures, the first embodiment of the present invention comprises: a strap 1, a first buckle unit 2, a second buckle unit 3, a pressure detection unit 4, a position detection unit 5 and a control unit 6, wherein: the strap 1 has an open first end 11 and a second end 12 on both sides. The inner side of the strap 1 is provided with a pad 13 made of skin-friendly material. The strap 1 is provided with two corresponding fixing straps 14, and the ends of the two fixing straps 14 are respectively provided with a male buckle 141 and a female buckle 142 with adjustable lengths. The male buckle 141 can be buckled with the female buckle 142 to form a loop, which can be conveniently buckled and fixed at the position of a bed frame pole. The length of the male buckle 141 can be adjusted to control the range of movement of a patient.

[0046] The first buckle unit 2 is combined with the strap 1. The first buckle unit 2 is provided with a hook and loop 21 and a fixing ring 22. The hook and loop 21 is fixed to the first end 11, and the fixing ring 22 is fixed to the second end 12, so that the hook and loop 21 can pass through the fixing ring 22 and then be folded back and bonded to the back of the hook and loop 21, so that the strap 1 is bonded and tightened on the patient's limbs.

[0047] The second buckle unit 3 is combined with the strap 1. The second buckle unit 3 is provided with two male buckles 31 and two female buckles 32. The two male buckles 31 are respectively fixed to the first end 11, and the two female buckles 32 are respectively fixed to the second end 12, so that the two male buckles 31 can be respectively inserted into the two female buckles 32 for fixing. The two male buckles 31 are respectively provided with an adjustable length adjustment ring 33, so that the length of the two male buckles 31 can be adjusted accordingly, so as to buckle and tighten the strap 1 on the patient's limbs. In addition, the two female buckles 32 are respectively provided with a locking key 34, so as to press the two locking keys 34 respectively, so that the two female buckles 32 are locked to prevent the two male buckles 31 from being accidentally touched and unlocked.

[0048] The pressure detection unit 4 is disposed on the strap 1. The pressure detection unit 4 is mainly disposed on the surface of the pad 13, or between the strap 1 and the pad 13, so as to detect the pressure value of the strap 1 tied on the patient's limbs, and when the pressure value is lower than a set value, a pressure warning signal will be issued. The set value is the pressure that the strap 1 bears when the patient's limbs are about to break free or loosen. When the pressure value is lower than the set value, it can be regarded as the patient's limbs have broken free from the strap, or the strap has been loosened on the limbs. Therefore, the pressure value will be lower than the set value, and the pressure warning signal will be issued as a warning notification. The setting value of the pressure detection can also be increased, so that when the patient's limbs have not yet completely broken free but are only about to break free, the pressure value can be detected to be reduced in advance. When there is a possibility of breaking free or loosening, the pressure warning signal can be issued in advance, so that the breaking free or loosening can be discovered in time or in advance, thereby preventing the strap 1 from breaking free or loosening.

[0049] At least one position detection unit 5 is disposed on the first knot unit 2 and / or the second knot unit 3 to detect the disconnection or displacement state of the first knot unit 2 and / or the second knot unit 3, so as to send out a knot warning signal after the hook and loop 21 and the fixing ring 22 of the first knot unit 2 are disconnected or displaced due to loosening, and / or send out the knot warning signal after any of the two male fasteners 31 and the two female fasteners 32 of the second knot unit 3 are disconnected or displaced due to loosening. The position detection unit 5 can be a pressure sensor, a photoelectric sensor, an ultrasonic sensor, a magnetic sensor, a displacement sensor or a contact sensor. The first embodiment of the present invention is provided with three sets of position detection units 5, which are respectively arranged between the Velcro 21 and the fixing ring 22, and between the two male fasteners 31 and the two female fasteners 32, so that when there is any disconnection or displacement between the Velcro 21 and the fixing ring 22, or between the two male fasteners 31 and the two female fasteners 32, the knot warning signal will be issued.

[0050] The control unit 6 is connected to the pressure detection unit 4 and the position detection unit 5 by signals, so as to receive the pressure warning signal and the knot warning signal respectively, and issue a warning notification, and transmit it to a remote device A. The control unit 6 includes a computing module 61, and a battery 62 electrically connected to the computing module 61, a warning element 63, a wireless transmission module 64, a timer 65, a storage module 66 and an input interface 67. The control unit 6 is detachably combined with a fixing seat 68, and the fixing seat 68 is fixed to the outer side of the strap 1, and the fixing seat 68 is wired to connect the pressure detection unit 4 and the position detection unit 5. The battery 62 can provide the power required for the control unit 6 to operate. The control unit 6 is detachably engaged with the fixing seat 68, so that the computing module 61 can receive the pressure warning signal and the knot warning signal through the fixing seat 68 and issue the warning notification. The warning notification is a sound signal or a light signal. The warning element 63 can be a buzzer or a warning light. After the computing module 61 receives the pressure warning signal or the knot warning signal, the warning element 63 can be controlled to emit a warning sound or a warning light to remind the surrounding caregivers to pay attention. The wireless transmission module 64 can transmit the received pressure warning signal or the knot warning signal to the remote device A. The remote device A can be a handheld electronic device (mobile phone or smart watch) A1, a tablet computer A2 or a computer A3, so as to remind the remote monitor to pay attention. The patient's name, bed, restrained limbs and reminder release time can also be input through the input interface 67. The input information will be stored in the storage module 66. At the same time, the timer 65 is used to count the time, so that when the reminder unbinding time (for example, 2 hours) is reached, the warning element 63 will issue a warning notification, and the warning notification will be transmitted to the remote device A through the wireless transmission module 64 to remind the caregiver or monitor to help the patient unbind at a fixed time, so as to relax the patient's limbs for massage and observe blood circulation, and change positions to avoid long-term restraint, which may cause pressure and discomfort to the patient's limbs.

[0051] When in use, as shown in the first, second and third figures, the strap 1 is wrapped around any limb B of the patient's four limbs (as shown in the fourth figure), and then the Velcro 21 of the first buckle unit 2 is passed through the fixing ring 22, and then folded back and bonded to the back of the Velcro 21, so that the strap 1 is bonded and fastened to the limb B of the patient. Then the two male fasteners 31 of the second buckle unit 3 are respectively inserted into the two female fasteners 32 for fastening. Then the adjusting rings 33 of the two male fasteners 31 are adjusted to tighten the length of the two male fasteners 31, so that the strap 1 is fastened and fastened to the limb B of the patient (as shown in the fifth figure). Then the locking keys 34 on the two female fasteners 32 are respectively pressed to form a locked state of the two female fasteners 32 to prevent the two male fasteners 31 from being accidentally touched and unlocked. Then, the two fixing belts 14 on the strap 1 are put on the position of a bed frame pole C (as shown in FIG. 6 ), and the male buckle 141 and the female buckle 142 are interlocked to form a loop, which can be fastened to the bed frame pole C. The length of the male buckle 141 is adjusted to control the movement range of the patient.

[0052] Finally, the control unit 6 is inserted and fixed on the fixing seat 68, so that the power supply of the battery 62 is used to activate the pressure detection unit 4 for pressure detection, and to activate the position detection units 5 for disconnection or displacement detection. The pressure detection unit 4 detects the pressure value of the strap 1 tied to the limb B of the patient (as shown in Figure 7), and when the pressure value is lower than the set value, the pressure warning signal is issued. The computing module 61 can receive the pressure warning signal through the fixing seat 68. After the computing module 61 receives the pressure warning signal, it can control the warning element 63 to emit a warning sound or a warning light to remind the surrounding caregivers to pay attention. The wireless transmission module 64 can also transmit the received pressure warning signal to the remote device A to remind the remote monitor to pay attention.

[0053] The position detection units 5 detect the disconnection or displacement state of the first knot unit 2 and the second knot unit 3, so as to send out the knot warning signal after the hook and loop 21 of the first knot unit 2 and the fixing ring 22 are loosened and disconnected, and send out the knot warning signal after any of the two male fasteners 31 and the two female fasteners 32 of the second knot unit 3 are loosened and disconnected. Then, through the fixing seat 68, the computing module 61 receives the knot warning signal. After the computing module 61 receives the knot warning signal, it can control the warning element 63 to send out a warning sound or a warning light to remind the surrounding caregivers to pay attention. The wireless transmission module 64 can also transmit the received knot warning signal to the remote device A to remind the remote monitor to pay attention.

[0054] At the same time, the timer counts the time, so that when the reminder unbinding time is reached, the warning element 63 will issue a warning, and the warning notification will be transmitted to the remote device A through the wireless transmission module 64 to remind the caregiver or monitor to help the patient unbind at a certain time to relax the patient's limbs for activities, so as to avoid long-term restraint, which will cause stiffness and discomfort in the patient's limbs.

[0055] The second embodiment of the invention is shown in Figures 8, 9 and 10. The difference between the second embodiment and the first embodiment is that the second buckle unit 7 is different in structure. The second buckle unit 7 is combined with the strap 1 and includes a tightening knob 71, a contraction rope 72 and a plurality of ring bodies 73. The ring bodies 73 are fixed to the periphery of the strap 1. The contraction rope 72 passes through the ring bodies 73 in sequence. The two ends of the contraction rope 72 are combined on the circumference of the tightening knob 71. The tightening knob 71 is fixed to the strap 1. By rotating the tightening knob 71, the contraction rope 72 can be contracted to tighten the strap 1. Thus, when the strap 1 is wrapped around any limb B of the patient, the Velcro 21 of the first buckle unit 2 is passed through the fixing ring 22 and then folded back and bonded to the back of the Velcro 21, so that the strap 1 is bonded and fastened to the limb B of the patient. Then the tightening knob 71 can be quickly rotated to tighten the contraction rope 72, which can also strengthen the force of tightening the strap 1, and can be tightened quickly in a very short time to reduce the chance of being broken free by the patient during the wearing process. The position detection unit 5 can be a displacement sensor to detect the displacement change of the rotation position of the tightening knob 71 to determine that the tightening knob 71 has been rotated and loosened, and the buckle warning signal can be immediately issued to prevent the limb B of the patient and the strap 1 from being broken free or loosened.

[0056] Based on the description of the above embodiments, the operation, use and effects of the present invention can be fully understood. However, the above embodiments are only preferred embodiments of the present invention and should not be used to limit the scope of the present invention. That is, simple equivalent changes and modifications made according to the scope of the patent application and the content of the invention description of the present invention are all within the scope of the present invention.

[0057] 1: Drawstring

[0058] 11: First End

[0059] 12: Second End

[0060] 13: Pad body

[0061] 14:Fixed belt

[0062] 141: Male buckle

[0063] 142: Female buckle

[0064] 2: The first knot unit

[0065] 21: Velcro

[0066] 22: Fixed ring

[0067] 3: Second knot unit

[0068] 31: Male fastener

[0069] 32: Female fastener

[0070] 33: Adjustment ring

[0071] 34: Lock key

[0072] 4: Pressure detection unit

[0073] 5: Position detection unit

[0074] 6: Control unit

[0075] 61: Computing module

[0076] 62:Battery

[0077] 63: Warning element

[0078] 64: Wireless transmission module

[0079] 65:Timer

[0080] 66: Storage Module

[0081] 67: Input Interface

[0082] 68: Fixed seat

[0083] 7: Second knot unit

[0084] 71: Tightening knob

[0085] 72: Retraction rope

[0086] 73: Ring

[0087] A: Remote Device

[0088] A1:Handheld electronic devices

[0089] A2: Tablet

[0090] A3: Computer

[0091] B: Limbs

[0092] C: Bed frame uprights

Claims

1. A restraint monitoring device, comprising: a strap having a first end and a second end; a first knot unit, which is combined with the strap to tighten the first end and the second end so that the strap generates a pressure value; a pressure detection unit, which is arranged on the strap, the pressure detection unit detects the pressure value and sends out a pressure warning signal when the pressure value is lower than a set value; at least one position detection unit, which is arranged on the first knot unit, so as to detect the disconnection or displacement state of the first knot unit, so as to send out a knot warning signal after the first knot unit is disconnected or displaced; a control unit, which is detachably arranged on the strap, and the control unit is respectively connected to the pressure detection unit and the position detection unit by signal, so as to receive the pressure warning signal and / or the knot warning signal respectively to send out a warning notification.

2. The restraint monitoring device of claim 1, wherein: The first buckle unit is provided with a hook and loop fastener, the hook and loop fastener is fixed to the first end, the loop fastener is fixed to the second end, and the hook and loop fastener passes through the loop fastener and is then folded back and bonded to the back of the hook and loop fastener.

3. The restraint monitoring device of claim 2, wherein: The position detection unit is arranged between the hook and loop and sends out the knot warning signal after detecting that the hook and loop are disconnected.

4. The restraint monitoring device as claimed in claim 1 is further provided with a second buckle unit, which is combined with the strap to tighten the strap, and the position detection unit is arranged on the second buckle unit to detect the disconnection or displacement state of the second buckle unit, and the buckle warning signal is issued after the second buckle unit is disconnected or displaced.

5. The restraint monitoring device of claim 4, wherein: The second buckle unit is provided with two male fasteners and two female fasteners. The two male fasteners are respectively fixed to the first end, the two female fasteners are respectively fixed to the second end, and the two male fasteners are respectively inserted and fixed in the two female fasteners.

6. The restraint monitoring device of claim 5, wherein: The position detection unit is arranged between the two male fasteners and the two female fasteners, and sends out the knot warning signal after detecting that any one of the two male fasteners is disconnected from the two female fasteners.

7. The restraint monitoring device of claim 5, wherein: The two male fasteners are respectively provided with an adjusting ring with adjustable length, so as to respectively and correspondingly adjust the length of the two male fasteners.

8. The restraint monitoring device of claim 5, wherein: The two female fasteners are respectively provided with a locking key. The two locking keys are respectively pressed to lock the two female fasteners to avoid accidental release of the two male fasteners.

9. The restraint monitoring device of claim 4, wherein: The second buckle unit includes a tightening knob, a contraction rope and a plurality of rings, wherein the rings are fixed to the periphery of the drawstring, and the contraction rope passes through the rings in sequence. Both ends of the contraction rope are connected to the circumference of the tightening knob, and the tightening knob is fixed to the drawstring. The tightening knob is rotated to contract the contraction rope to tighten the drawstring.

10. The restraint monitoring device of claim 1, wherein: The inner side of the strap is provided with a pad body made of skin-friendly material.

11. The restraint monitoring device of claim 10, wherein: The pressure detection unit is arranged on the surface of the pad body, or between the strap and the pad body.

12. The restraint monitoring device of claim 1, wherein: The strap is provided with two corresponding fixing straps, and the ends of the two fixing straps are respectively provided with a male buckle and a female buckle with adjustable lengths, and the male buckle and the female buckle are interlocked to form a circle.

13. The restraint monitoring device of claim 1, wherein: The strap is tied to any limb of a patient to generate the pressure value, and when the pressure value is lower than a set value, the pressure warning signal will be issued. The set value is the pressure that the strap bears when the limb of the patient breaks free or loosens.

14. The restraint monitoring device of claim 1, wherein: The position detection unit is a pressure sensor, a photoelectric sensor, an ultrasonic sensor, a magnetic sensor, a displacement sensor or a contact sensor.

15. The restraint monitoring device of claim 1, wherein: The control unit includes a computing module, a battery electrically connected to the computing module, a warning element, a wireless transmission module, a timer, a storage module and an input interface. The battery can provide the power required for the control unit to operate.

16. The restraint monitoring device of claim 15, wherein: The control unit is detachably combined with a fixing base, which is fixed to the outer side of the strap, and the fixing base is signal-connected to the pressure detection unit and the position detection unit to transmit the pressure warning signal and the knot warning signal.

17. The restraint monitoring device of claim 15, wherein: The warning notification is a sound signal or a light signal, the warning element is a buzzer or a warning light, and after receiving the pressure warning signal or the knot warning signal, the computing module controls the warning element to emit a warning sound or a warning light.

18. The restraint monitoring device of claim 15, wherein: The wireless transmission module transmits the received pressure warning signal or the knot warning signal to a remote device, which is a handheld electronic device, a tablet computer or a computer.

19. The restraint monitoring device of claim 15, wherein: The information of a patient's name, bed, restrained limb parts and reminder release time is input through the input interface, and the information is stored in the storage module. At the same time, the time is counted through the timer. When the reminder release time is reached, the warning notification is issued through the warning element, and the warning notification is transmitted to a remote device through the wireless transmission module.

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